annotate Common/Src/decom.c @ 135:5df4f1a315cb FlipDisplay

Restore old data copy locations Do first calculation based on ambient bar to avoid desaturation shift Added error handling for lost communication
author Ideenmodellierer
date Tue, 19 Feb 2019 18:18:37 +0100
parents 239aa58b533d
children 1b995079c045
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38
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1 ///////////////////////////////////////////////////////////////////////////////
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2 /// -*- coding: UTF-8 -*-
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3 ///
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4 /// \file Common/Src/decom.c
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5 /// \brief This code is used to calculate desat, calculated by RTE and send to Firmware
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6 /// \author heinrichs weikamp gmbh
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7 /// \date 22-Feb-2016
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8 ///
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9 /// $Id$
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10 ///////////////////////////////////////////////////////////////////////////////
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11 /// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
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12 ///
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13 /// This program is free software: you can redistribute it and/or modify
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14 /// it under the terms of the GNU General Public License as published by
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15 /// the Free Software Foundation, either version 3 of the License, or
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16 /// (at your option) any later version.
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17 ///
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18 /// This program is distributed in the hope that it will be useful,
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19 /// but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 /// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 /// GNU General Public License for more details.
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22 ///
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23 /// You should have received a copy of the GNU General Public License
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24 /// along with this program. If not, see <http://www.gnu.org/licenses/>.
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25 //////////////////////////////////////////////////////////////////////////////
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26 /**
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27 @verbatim
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28 ==============================================================================
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29 ##### Changes #####
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30 ==============================================================================
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31 V1.0.2 1602220x decom_oxygen_calculate_cns() changed to hwOS version
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32
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33 @endverbatim
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34 ******************************************************************************
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35 */
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36
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37 #include "decom.h"
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38
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39 #include <math.h>
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40 #include "settings.h"
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41 #include "calc_crush.h"
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42
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43 # define FRACTION_N2_AIR 0.7902
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44
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45 const float helium_time_constant[16] = {
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46 3.68695308808482E-001,
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47 2.29518933960247E-001,
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48 1.46853216220327E-001,
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49 9.91626867753856E-002,
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50 6.78890480470074E-002,
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51 4.78692804254106E-002,
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52 3.37626488338989E-002,
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53 2.38113081607676E-002,
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54 1.68239606932026E-002,
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55 1.25592893741610E-002,
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56 9.80544886914621E-003,
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57 7.67264977374303E-003,
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58 6.01220557342307E-003,
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59 4.70185307665137E-003,
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60 3.68225234041620E-003,
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61 2.88775228329769E-003};
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62
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63 const float nitrogen_time_constant[16] = {
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64 1.38629436111989E-001,
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65 8.66433975699932E-002,
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66 5.54517744447956E-002,
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67 3.74674151654024E-002,
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68 2.56721177985165E-002,
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69 1.80978376125312E-002,
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70 1.27651414467762E-002,
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71 9.00191143584345E-003,
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72 6.35914844550409E-003,
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73 4.74758342849278E-003,
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74 3.70666941475907E-003,
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75 2.90019740820061E-003,
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76 2.27261370675392E-003,
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77 1.77730046297422E-003,
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78 1.39186180835330E-003,
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79 1.09157036308653E-003};
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80
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81
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82 const float buehlmann_N2_a[] = {
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83 1.1696f,
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84 1.0000f,
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85 0.8618f,
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86 0.7562f,
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87 0.6200f,
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88 0.5043f,
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89 0.4410f,
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90 0.4000f,
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91 0.3750f,
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92 0.3500f,
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93 0.3295f,
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94 0.3065f,
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95 0.2835f,
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96 0.2610f,
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97 0.2480f,
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98 0.2327f};
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99
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100 const float buehlmann_N2_b[] = {
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101 0.5578f,
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102 0.6514f,
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103 0.7222f,
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104 0.7825f,
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105 0.8126f,
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106 0.8434f,
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107 0.8693f,
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108 0.8910f,
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109 0.9092f,
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110 0.9222f,
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111 0.9319f,
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112 0.9403f,
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113 0.9477f,
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114 0.9544f,
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115 0.9602f,
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116 0.9653f};
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117
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118 const float buehlmann_He_a[] = {
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119 1.6189f,
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120 1.3830f,
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121 1.1919f,
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122 1.0458f,
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123 0.9220f,
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124 0.8205f,
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125 0.7305f,
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126 0.6502f,
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127 0.5950f,
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128 0.5545f,
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129 0.5333f,
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130 0.5189f,
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131 0.5181f,
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132 0.5176f,
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133 0.5172f,
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134 0.5119f};
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135
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136 const float buehlmann_He_b[] = {
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137 0.4770f,
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138 0.5747f,
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139 0.6527f,
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140 0.7223f,
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141 0.7582f,
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142 0.7957f,
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143 0.8279f,
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144 0.8553f,
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145 0.8757f,
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146 0.8903f,
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147 0.8997f,
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148 0.9073f,
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149 0.9122f,
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150 0.9171f,
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151 0.9217f,
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152 0.9267f};
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153
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154 const float buehlmann_N2_t_halflife[] = {
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155 5.0f,
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156 8.0f,
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157 12.5f,
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158 18.5f,
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159 27.0f,
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160 38.3f,
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161 54.3f,
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162 77.0f,
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163 109.0f,
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164 146.0f,
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165 187.0f,
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166 239.0f,
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167 305.0f,
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168 390.0f,
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169 498.0f,
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170 635.0f};
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171
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172 const float buehlmann_He_t_halflife[] = {
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173 1.88f,
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174 3.02f,
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175 4.72f,
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176 6.99f,
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177 10.21f,
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178 14.48f,
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179 20.53f,
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180 29.11f,
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181 41.20f,
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182 55.19f,
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183 70.69f,
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184 90.34f,
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185 115.29f,
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186 147.42f,
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187 188.24f,
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188 240.03f};
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189
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190 const float float_buehlmann_N2_factor_expositon_one_second[] = { 2.30782347297664E-003f, 1.44301447809736E-003f, 9.23769302935806E-004f, 6.24261986779007E-004f, 4.27777107246730E-004f, 3.01585140931371E-004f, 2.12729727268379E-004f, 1.50020603047807E-004f, 1.05980191127841E-004f, 7.91232600646508E-005f, 6.17759153688224E-005f, 4.83354552742732E-005f, 3.78761777920511E-005f, 2.96212356654113E-005f, 2.31974277413727E-005f, 1.81926738960225E-005f};
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191 const float float_buehlmann_N2_factor_expositon_003_second[] = { 6.90750456296407E-003f, 4.32279956671600E-003f, 2.76874864793053E-003f, 1.87161709452954E-003f, 1.28278242026003E-003f, 9.04482589432765E-004f, 6.38053429621421E-004f, 4.49994293975742E-004f, 3.17906879170993E-004f, 2.37350999218289E-004f, 1.85316297551252E-004f, 1.44999356986975E-004f, 1.13624229615916E-004f, 8.88610747694640E-005f, 6.95906688746861E-005f, 5.45770287740943E-005f};
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192 const float float_buehlmann_N2_factor_expositon_008_second[] = { 1.83141447532454E-002f, 1.14859796471039E-002f, 7.36630472495203E-003f, 4.98319782231915E-003f, 3.41709742823104E-003f, 2.41013596224415E-003f, 1.70057124687550E-003f, 1.19953484034729E-003f, 8.47527105247492E-004f, 6.32810814525819E-004f, 4.94100480767923E-004f, 3.86618231662861E-004f, 3.02969256443353E-004f, 2.36945319086024E-004f, 1.85564355251966E-004f, 1.45532124251058E-004f};
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193 const float float_buehlmann_N2_factor_expositon_10_seconds[] = { 2.28400315657541E-002f, 1.43368013598124E-002f, 9.19938673477072E-003f, 6.22511239287027E-003f, 4.69545762670800E-003f, 3.01176178733265E-003f, 2.12526200031782E-003f, 1.49919365737827E-003f, 1.05929662305226E-03f, 7.909509380171760E-004f, 6.17587450108648E-004f, 4.83249432061905E-004f, 3.78697227222391E-004f, 2.61728759809380E-004f, 2.31950063482533E-004f, 1.81911845881011E-004f};
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194 const float float_buehlmann_N2_factor_expositon_18_seconds[] = { 4.07358806747357E-002f, 2.56581087982929E-002f, 1.64979259737517E-002f, 1.11772892486697E-002f, 7.67205373705648E-003f, 5.41463899418337E-003f, 3.82221908774349E-003f, 2.69693016270112E-003f, 1.90592594569927E-003f, 1.42326123023573E-003f, 1.11138278062062E-003f, 8.69680830683950E-004f, 6.81551750048359E-004f, 5.33048018290350E-004f, 4.17471377070378E-004f, 3.27417496114757E-004f};
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195 const float float_buehlmann_N2_factor_expositon_20_seconds[] = { 4.51583960895835E-002f, 2.84680588463941E-002f, 1.83141447532454E-002f, 1.24114727614367E-002f, 8.52086250432193E-003f, 6.01445286560154E-003f, 4.24600726206570E-003f, 2.99613973313428E-003f, 2.11747113676897E-003f, 1.58127627264804E-003f, 1.23479348595879E-003f, 9.66265334110261E-004f, 7.57251042854845E-004f, 5.92258033589421E-004f, 4.63846326133055E-004f, 3.63790599842373E-004f};
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196 const float float_buehlmann_N2_factor_expositon_one_minute[] = { 1.29449436703876E-001f, 8.29959567953288E-002f, 5.39423532744041E-002f, 3.67741962370398E-002f, 2.53453908775689E-002f, 1.79350552316596E-002f, 1.26840126026602E-002f, 8.96151553540825E-003f, 6.33897185233323E-003f, 4.73633146787078E-003f, 3.69980819572546E-003f, 2.89599589841472E-003f, 2.27003327536857E-003f, 1.77572199977927E-003f, 1.39089361795441E-003f, 1.09097481687104E-003f};
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197 const float float_buehlmann_N2_factor_expositon_100_second[] = { 2.06299474015900E-001f, 1.34463438993857E-001f, 8.82775114417832E-002f, 6.05359181023788E-002f, 4.18844218114071E-002f, 2.97126970072147E-002f, 2.10505144045823E-002f, 1.48911986890571E-002f, 1.05426136839346E-002f, 7.88141652426455E-003f, 6.15873909572406E-003f, 4.82199900095137E-003f, 3.78052526350936E-003f, 2.95778454900952E-003f, 2.31708109427220E-003f, 1.81763004457269E-003f};
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198 const float float_buehlmann_N2_factor_expositon_five_minutes[]= { 5.00000000000000E-001f, 3.51580222674495E-001f, 2.42141716744801E-001f, 1.70835801932547E-001f, 1.20463829104624E-001f, 8.65157896183918E-002f, 6.18314987350977E-002f, 4.40116547625051E-002f, 3.12955727186929E-002f, 2.34583889613009E-002f, 1.83626606868127E-002f, 1.43963540993090E-002f, 1.12987527093947E-002f, 8.84713405486026E-003f, 6.93514912851934E-003f, 5.44298480182925E-003f};
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199 const float float_buehlmann_N2_factor_expositon_800_second[] = { 8.42509868763141E-001f, 6.85019737526282E-001f, 5.22579198044792E-001f, 3.93205767018569E-001f, 2.89861248917861E-001f, 2.14397627137602E-001f, 1.56505490290652E-001f, 1.13102166881646E-001f, 8.12935637814599E-002f, 6.13392112527207E-002f, 4.82208523469105E-002f, 3.79311861210304E-002f, 2.98470272862601E-002f, 2.34187624071612E-002f, 1.83870151711824E-002f, 1.44488700649190E-002f};
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200 const float float_buehlmann_N2_factor_expositon_one_hour[]= { 9.99755859375000E-001f, 9.94475728271980E-001f, 9.64103176406343E-001f, 8.94394508891055E-001f, 7.85689004286732E-001f, 6.62392147498621E-001f, 5.35088626789486E-001f, 4.17318576947576E-001f, 3.17197008420226E-001f, 2.47876700002107E-001f, 1.99405069752929E-001f, 1.59713055172538E-001f, 1.27468761759271E-001f, 1.01149026804458E-001f, 8.01196838116008E-002f, 6.33955413542552E-002f};
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201
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202 const float float_buehlmann_He_factor_expositon_one_second[] = { 6.12608039419837E-003f, 3.81800836683133E-003f, 2.44456078654209E-003f, 1.65134647076792E-003f, 1.13084424730725E-003f, 7.97503165599123E-004f, 5.62552521860549E-004f, 3.96776399429366E-004f, 2.80360036664540E-004f, 2.09299583354805E-004f, 1.63410794820518E-004f, 1.27869320250551E-004f, 1.00198406028040E-004f, 7.83611475491108E-005f, 6.13689891868496E-005f, 4.81280465299827E-005f};
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203 const float float_buehlmann_He_factor_expositon_003_second[] = { 1.82658845044263E-002f, 1.14103491926518E-002f, 7.31576933570466E-003f, 4.94586307993539E-003f, 3.38869776192019E-003f, 2.39060197012086E-003f, 1.68670834759044E-003f, 1.18985696621965E-003f, 8.40844326779777E-004f, 6.27767340286467E-004f, 4.90152279561396E-004f, 3.83558911153159E-004f, 3.00565099928485E-004f, 2.35065021719993E-004f, 1.84095669333084E-004f, 1.44377190774980E-004f}; // 3 He
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204 const float float_buehlmann_He_factor_expositon_008_second[] = { 4.79706116082057E-002f, 3.01390075707096E-002f, 1.93899772993034E-002f, 1.31346689569831E-002f, 9.01102820363486E-003f, 6.36224538449637E-003f, 4.49156910795023E-003f, 3.16980660943422E-003f, 2.24068067793926E-003f, 1.67317060331207E-003f, 1.30653891641375E-003f, 1.02249686330114E-003f, 8.01306192375617E-004f, 6.26717274191169E-004f, 4.90846474157092E-004f, 3.84959521834594E-004f}; // 8 He
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205 const float float_buehlmann_He_factor_expositon_10_seconds[] = { 5.95993001714799E-002f, 3.75307444923134E-002f, 2.41784389107607E-002f, 1.63912909924208E-002f, 1.25106927410620E-002f, 7.94647192918641E-003f, 5.61130562069978E-003f, 3.96068706690245E-003f, 2.80006593100546E-003f, 2.09102564918129E-003f, 1.63290683272987E-003f, 1.27795767799976E-003f, 1.00153239354972E-003f, 7.33352120986130E-004f, 6.13520442722559E-004f, 4.81176244777948E-004f};
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206 const float float_buehlmann_He_factor_expositon_18_seconds[] = { 1.04710896899039E-001f, 6.65386126706349E-002f, 4.30995968284519E-002f, 2.93106657684409E-002f, 2.01607137751910E-002f, 1.42581599093282E-002f, 1.00776711616688E-002f, 7.11793906429403E-003f, 5.03447255531631E-003f, 3.76069760984632E-003f, 2.93731229281968E-003f, 2.29914783358365E-003f, 1.80203605181650E-003f, 1.40956155658090E-003f, 1.10406577253352E-003f, 8.65950533235460E-004f};
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207 const float float_buehlmann_He_factor_expositon_20_seconds[] = { 1.15646523762030E-001f, 7.36529322024796E-002f, 4.77722809133601E-002f, 3.25139075644434E-002f, 2.23755519884017E-002f, 1.58297974422514E-002f, 1.11911244906306E-002f, 7.90568709176287E-003f, 5.59229149279306E-003f, 4.17767891009702E-003f, 3.26314728073529E-003f, 2.55428218017273E-003f, 2.00206171996409E-003f, 1.56605681014277E-003f, 1.22666447811148E-003f, 9.62120958977297E-004f};
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208 const float float_buehlmann_He_factor_expositon_one_minute[] = { 3.08363886219441E-001f, 2.05084082411030E-001f, 1.36579295730211E-001f, 9.44046323514587E-002f, 6.56358626478964E-002f, 4.67416115355790E-002f, 3.31990512604121E-002f, 2.35300557146709E-002f, 1.66832281977395E-002f, 1.24807506400979E-002f, 9.75753219809561E-003f, 7.64329013320042E-003f, 5.99416843126677E-003f, 4.69081666943783E-003f, 3.67548116287808E-003f, 2.88358673732592E-003f};
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209 const float float_buehlmann_He_factor_expositon_100_second[] = { 4.59084487437744E-001f, 3.17867635141657E-001f, 2.17103957783539E-001f, 1.52336166567559E-001f, 1.06981885584572E-001f, 7.66825160768219E-002f, 5.47171474343117E-002f, 3.89083581201959E-002f, 2.76504642556165E-002f, 2.07145921483078E-002f, 1.62096019995457E-002f, 1.27063337640768E-002f, 9.97030625587825E-003f, 7.80579708939710E-003f, 6.11829377951190E-003f, 4.80135692933603E-003f}; // 100 He
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210 const float float_buehlmann_He_factor_expositon_five_minutes[]= { 8.41733751018722E-001f, 6.82600697933713E-001f, 5.20142493735619E-001f, 3.90924736715930E-001f, 2.87834706153524E-001f, 2.12857832580192E-001f, 1.55333364924147E-001f, 1.12242395185686E-001f, 8.06788883581406E-002f, 6.08653819753062E-002f, 4.78448115000141E-002f, 3.76366999883051E-002f, 2.96136888654287E-002f, 2.32350754744602E-002f, 1.82428098114835E-002f, 1.43350223887367E-002f}; // thre
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211 const float float_buehlmann_He_factor_expositon_800_second[] = { 9.92671155759686E-001f, 9.53124140216102E-001f, 8.58865632718416E-001f, 7.33443528431762E-001f, 5.95533881446524E-001f, 4.71787742036413E-001f, 3.62479376011699E-001f, 2.72021750877104E-001f, 2.00940186773410E-001f, 1.54187175639359E-001f, 1.22553521140786E-001f, 9.72431193565182E-002f, 7.70338702477497E-002f, 6.07666995543268E-002f, 4.79109397391700E-002f, 3.77715319879068E-002f}; // 800 He
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212 const float float_buehlmann_He_factor_expositon_one_hour[]= { 9.99999999753021E-001f, 9.99998954626205E-001f, 9.99850944669188E-001f, 9.97393537149572E-001f, 9.82979603888650E-001f, 9.43423231328217E-001f, 8.68106292901111E-001f, 7.60374619482322E-001f, 6.35576141220644E-001f, 5.29310840978539E-001f, 4.44744511849213E-001f, 3.68942936079581E-001f, 3.02834419265355E-001f, 2.45810174422126E-001f, 1.98231319020275E-001f, 1.59085372294989E-001f};
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213
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214 void decom_get_inert_gases(const float ambient_pressure_bar,const SGas* pGas, float* fraction_nitrogen, float* fraction_helium )
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215 {
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216 float fraction_all_inertgases;
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217 float ppo2_fraction_setpoint;
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218 float diluent_divisor;
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219
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220
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221 *fraction_nitrogen = ((float)pGas->nitrogen_percentage) / 100.0f;
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222 *fraction_helium = ((float)pGas->helium_percentage) / 100.0f;
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223
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224 if(!pGas->setPoint_cbar)
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225 return;
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226
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227 // continue with CCR
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228 fraction_all_inertgases = *fraction_nitrogen + *fraction_helium;
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229
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230 ppo2_fraction_setpoint = (float)pGas->setPoint_cbar/ (100 * ambient_pressure_bar);
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231
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232 diluent_divisor = (1.0f - ppo2_fraction_setpoint) / fraction_all_inertgases;
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233 if(diluent_divisor < 0)
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234 diluent_divisor = 0;
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235
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236 *fraction_nitrogen *= diluent_divisor;
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237 *fraction_helium *= diluent_divisor;
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238 }
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239
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240
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241 void decom_tissues_exposure(int period_in_seconds, SLifeData * pLifeData)
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242 {
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243 decom_tissues_exposure2(period_in_seconds, &pLifeData->actualGas, pLifeData->pressure_ambient_bar, pLifeData->tissue_nitrogen_bar, pLifeData->tissue_helium_bar);
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244 }
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245
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246
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247 void decom_tissues_exposure2(int period_in_seconds, SGas* pActualGas, float ambiant_pressure_bar, float *tissue_N2_selected_stage, float *tissue_He_selected_stage)
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248 {
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249 int ci;
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250 float percent_N2;
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251 float percent_He;
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252 float partial_pressure_N2;
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253 float partial_pressure_He;
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254
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255
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256
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257 int period_in_seconds_left;
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258
57
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259 if(period_in_seconds > 0)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
260 {
38
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
261
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
262 decom_get_inert_gases(ambiant_pressure_bar, pActualGas, &percent_N2, &percent_He);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
263
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
264 partial_pressure_N2 = (ambiant_pressure_bar - WATER_VAPOUR_PRESSURE) * percent_N2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
265 partial_pressure_He = (ambiant_pressure_bar - WATER_VAPOUR_PRESSURE) * percent_He;
57
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
266 period_in_seconds_left = period_in_seconds;
38
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
267
57
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
268 while(period_in_seconds_left)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
269 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
270 if(period_in_seconds_left >= 3600)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
271 period_in_seconds = 3600;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
272 else
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
273 if(period_in_seconds_left >= 800)
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parents: 38
diff changeset
274 period_in_seconds = 800;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
275 else
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
276 if(period_in_seconds_left >= 300)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
277 period_in_seconds = 300;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
278 else
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
279 if(period_in_seconds_left >= 100)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
280 period_in_seconds = 100;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
281 else
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
282 if(period_in_seconds_left >= 60)
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
283 period_in_seconds = 60;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
284 else
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
285 if(period_in_seconds_left == 36)
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parents: 38
diff changeset
286 period_in_seconds = 18;
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Ideenmodellierer
parents: 38
diff changeset
287 else
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
288 if(period_in_seconds_left >= 20)
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parents: 38
diff changeset
289 period_in_seconds = 20;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
290 else
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
291 if(period_in_seconds_left >= 18)
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parents: 38
diff changeset
292 period_in_seconds = 18;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
293 else
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
294 if(period_in_seconds_left >= 10)
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
295 period_in_seconds = 10;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
296 else
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
297 if(period_in_seconds_left >= 8)
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diff changeset
298 period_in_seconds = 8;
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Ideenmodellierer
parents: 38
diff changeset
299 else
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Ideenmodellierer
parents: 38
diff changeset
300 if(period_in_seconds_left >= 3)
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
301 period_in_seconds = 3;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
302 else
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
303 period_in_seconds = 1;
38
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heinrichsweikamp
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304
57
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
305 period_in_seconds_left -= period_in_seconds;
38
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
306
57
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
307 switch (period_in_seconds)
38
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
308 {
57
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
309 case 1:
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
310 for (ci=0;ci<16;ci++)
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Ideenmodellierer
parents: 38
diff changeset
311 {
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
312 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_one_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
313 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_one_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
314 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
315 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
316 case 3:
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
317 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
318 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
319 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_003_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
320 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_003_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
321 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
322 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
323 case 8:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
324 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
325 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
326 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_008_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
327 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_008_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
328 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
329 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
330 case 10:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
331 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
332 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
333 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_10_seconds[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
334 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_10_seconds[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
335 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
336 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
337 case 18:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
338 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
339 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
340 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_18_seconds[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
341 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_18_seconds[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
342 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
343 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
344 case 20:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
345 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
346 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
347 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_20_seconds[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
348 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_20_seconds[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
349 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
350 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
351 case 60:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
352 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
353 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
354 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_one_minute[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
355 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_one_minute[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
356 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
357 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
358 case 100:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
359 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
360 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
361 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_100_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
362 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_100_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
363 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
364 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
365 case 300:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
366 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
367 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
368 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_five_minutes[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
369 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_five_minutes[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
370 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
371 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
372 case 800:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
373 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
374 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
375 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_800_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
376 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_800_second[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
377 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
378 break;
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
379 case 3600:
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
380 for (ci=0;ci<16;ci++)
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
381 {
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
382 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_one_hour[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
383 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_one_hour[ci];
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
384 }
e941c9e49f73 Resolve format warnings
Ideenmodellierer
parents: 38
diff changeset
385 break;
38
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
386 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
387 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
388 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
389 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
390
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
391 void decom_reset_with_1000mbar(SLifeData * pLifeData)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
392 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
393 double saturation = 1.0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
394
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
395 saturation -= WATER_VAPOUR_PRESSURE;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
396 saturation *= FRACTION_N2_AIR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
397
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
398 for(int i=0;i<16;i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
399 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
400 pLifeData->tissue_nitrogen_bar[i] = saturation;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
401 pLifeData->tissue_helium_bar[i] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
402 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
403 pLifeData->otu = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
404 pLifeData->cns = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
405 pLifeData->desaturation_time_minutes = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
406 pLifeData->no_fly_time_minutes = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
407 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
408
129
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
409 void decom_reset_with_ambientmbar(float ambient, SLifeData * pLifeData)
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
410 {
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
411
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
412 float saturation = 1.0;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
413 saturation = ambient;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
414 saturation -= WATER_VAPOUR_PRESSURE;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
415 saturation *= FRACTION_N2_AIR;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
416
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
417 for(int i=0;i<16;i++)
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
418 {
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
419 pLifeData->tissue_nitrogen_bar[i] = saturation;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
420 pLifeData->tissue_helium_bar[i] = 0;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
421 }
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
422 pLifeData->otu = 0;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
423 pLifeData->cns = 0;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
424 pLifeData->desaturation_time_minutes = 0;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
425 pLifeData->no_fly_time_minutes = 0;
239aa58b533d Added function to initialise structures with the actual ambient pressure
Ideenmodellierer
parents: 57
diff changeset
426 }
38
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parents:
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427
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heinrichsweikamp
parents:
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428 /* =============================================================================== */
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heinrichsweikamp
parents:
diff changeset
429 /* NOTE ABOUT PRESSURE UNITS USED IN CALCULATIONS: */
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heinrichsweikamp
parents:
diff changeset
430 /* It is the convention in decompression calculations to compute all gas */
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heinrichsweikamp
parents:
diff changeset
431 /* loadings, absolute pressures, partial pressures, etc., in the units of */
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heinrichsweikamp
parents:
diff changeset
432 /* depth pressure that you are diving - either feet of seawater (fsw) or */
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heinrichsweikamp
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433 /* meters of seawater (msw). This program follows that convention with the */
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heinrichsweikamp
parents:
diff changeset
434 /* the exception that all VPM calculations are performed in SI units (by */
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heinrichsweikamp
parents:
diff changeset
435 /* necessity). Accordingly, there are several conversions back and forth */
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heinrichsweikamp
parents:
diff changeset
436 /* between the diving pressure units and the SI units. */
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heinrichsweikamp
parents:
diff changeset
437 /* =============================================================================== */
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heinrichsweikamp
parents:
diff changeset
438 /* =============================================================================== */
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heinrichsweikamp
parents:
diff changeset
439 /* FUNCTION SUBPROGRAM FOR GAS LOADING CALCULATIONS - ASCENT AND DESCENT */
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heinrichsweikamp
parents:
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440 /* =============================================================================== */
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heinrichsweikamp
parents:
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441
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heinrichsweikamp
parents:
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442
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heinrichsweikamp
parents:
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443 float decom_schreiner_equation(float *initial_inspired_gas_pressure,
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heinrichsweikamp
parents:
diff changeset
444 float *rate_change_insp_gas_pressure,
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heinrichsweikamp
parents:
diff changeset
445 float *interval_time_minutes,
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heinrichsweikamp
parents:
diff changeset
446 const float *gas_time_constant,
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heinrichsweikamp
parents:
diff changeset
447 float *initial_gas_pressure)
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heinrichsweikamp
parents:
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448 {
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heinrichsweikamp
parents:
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449 /* System generated locals */
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heinrichsweikamp
parents:
diff changeset
450 float ret_val;
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heinrichsweikamp
parents:
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451 float time_null_pressure = 0.0f;
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heinrichsweikamp
parents:
diff changeset
452 float time_rest = 0.0f;
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heinrichsweikamp
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453 float time = *interval_time_minutes;
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heinrichsweikamp
parents:
diff changeset
454 /* =============================================================================== */
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heinrichsweikamp
parents:
diff changeset
455 /* Note: The Schreiner equation is applied when calculating the uptake or */
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heinrichsweikamp
parents:
diff changeset
456 /* elimination of compartment gases during linear ascents or descents at a */
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heinrichsweikamp
parents:
diff changeset
457 /* constant rate. For ascents, a negative number for rate must be used. */
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heinrichsweikamp
parents:
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458 /* =============================================================================== */
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heinrichsweikamp
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459 if( *rate_change_insp_gas_pressure < 0.0f)
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heinrichsweikamp
parents:
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460 {
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461 time_null_pressure = -1.0f * *initial_inspired_gas_pressure / *rate_change_insp_gas_pressure;
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heinrichsweikamp
parents:
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462 if(time > time_null_pressure )
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463 {
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464 time_rest = time - time_null_pressure;
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465 time = time_null_pressure;
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466 }
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467 }
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468 ret_val =
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469 *initial_inspired_gas_pressure +
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470 *rate_change_insp_gas_pressure *
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471 (time - 1.f / *gas_time_constant) -
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heinrichsweikamp
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472 (*initial_inspired_gas_pressure -
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heinrichsweikamp
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473 *initial_gas_pressure -
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heinrichsweikamp
parents:
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474 *rate_change_insp_gas_pressure / *gas_time_constant) *
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475 expf(-(*gas_time_constant) * time);
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heinrichsweikamp
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476
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heinrichsweikamp
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477 if(time_rest > 0.0f)
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heinrichsweikamp
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478 {
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479 ret_val = ret_val * expf(-(*gas_time_constant) * time_rest);
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parents:
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480 }
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heinrichsweikamp
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481
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heinrichsweikamp
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482
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483 return ret_val;
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heinrichsweikamp
parents:
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484 }; /* schreiner_equation__2 */
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heinrichsweikamp
parents:
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485
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heinrichsweikamp
parents:
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486 void decom_tissues_exposure_stage_schreiner(int period_in_seconds, SGas* pGas, float starting_ambient_pressure_bar, float ending_ambient_pressure_bar,
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heinrichsweikamp
parents:
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487 float* pTissue_nitrogen_bar, float* pTissue_helium_bar)
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heinrichsweikamp
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488 {
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heinrichsweikamp
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489
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heinrichsweikamp
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490 float initial_pressure_N2;
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heinrichsweikamp
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diff changeset
491 float initial_pressure_He;
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heinrichsweikamp
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492
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heinrichsweikamp
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493 float ending_pressure_N2;
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heinrichsweikamp
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diff changeset
494 float ending_pressure_He;
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heinrichsweikamp
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495
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496 float fraction_N2_begin;
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heinrichsweikamp
parents:
diff changeset
497 float fraction_N2_end;
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heinrichsweikamp
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498 float fraction_He_begin;
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heinrichsweikamp
parents:
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499 float fraction_He_end;
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heinrichsweikamp
parents:
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500
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501 float rate_N2;
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heinrichsweikamp
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diff changeset
502 float rate_He;
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heinrichsweikamp
parents:
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503
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504 float period_in_minutes;
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heinrichsweikamp
parents:
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505
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heinrichsweikamp
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506 int ci;
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heinrichsweikamp
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507
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heinrichsweikamp
parents:
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508 if(period_in_seconds <= 0)
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509 return;
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heinrichsweikamp
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510
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511 decom_get_inert_gases(starting_ambient_pressure_bar, pGas, &fraction_N2_begin, &fraction_He_begin );
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heinrichsweikamp
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512 decom_get_inert_gases(ending_ambient_pressure_bar, pGas, &fraction_N2_end, &fraction_He_end );
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heinrichsweikamp
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513
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514 initial_pressure_N2 = (starting_ambient_pressure_bar - WATER_VAPOUR_PRESSURE) * fraction_N2_begin;
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515 initial_pressure_He = (starting_ambient_pressure_bar - WATER_VAPOUR_PRESSURE) * fraction_He_begin;
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516
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517 ending_pressure_N2 = (ending_ambient_pressure_bar - WATER_VAPOUR_PRESSURE) * fraction_N2_end;
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518 ending_pressure_He = (ending_ambient_pressure_bar - WATER_VAPOUR_PRESSURE) * fraction_He_end;
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heinrichsweikamp
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519
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520 rate_N2 = (ending_pressure_N2 - initial_pressure_N2) / period_in_seconds;
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heinrichsweikamp
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521 rate_He = (ending_pressure_He - initial_pressure_He) / period_in_seconds;
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heinrichsweikamp
parents:
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522
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523 period_in_minutes = ((float)period_in_seconds) / 60.0f;
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heinrichsweikamp
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diff changeset
524
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heinrichsweikamp
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525 for (ci=0;ci<16;ci++)
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heinrichsweikamp
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diff changeset
526 {
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heinrichsweikamp
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diff changeset
527 pTissue_nitrogen_bar[ci] =
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diff changeset
528 decom_schreiner_equation(
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heinrichsweikamp
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529 &initial_pressure_N2,
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heinrichsweikamp
parents:
diff changeset
530 &rate_N2,
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heinrichsweikamp
parents:
diff changeset
531 &period_in_minutes,
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heinrichsweikamp
parents:
diff changeset
532 &nitrogen_time_constant[ci],
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heinrichsweikamp
parents:
diff changeset
533 &pTissue_nitrogen_bar[ci]);
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heinrichsweikamp
parents:
diff changeset
534
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parents:
diff changeset
535 pTissue_helium_bar[ci] =
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heinrichsweikamp
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diff changeset
536 decom_schreiner_equation(
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heinrichsweikamp
parents:
diff changeset
537 &initial_pressure_He,
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heinrichsweikamp
parents:
diff changeset
538 &rate_He,
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heinrichsweikamp
parents:
diff changeset
539 &period_in_minutes,
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heinrichsweikamp
parents:
diff changeset
540 &helium_time_constant[ci],
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heinrichsweikamp
parents:
diff changeset
541 &pTissue_helium_bar[ci]);
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heinrichsweikamp
parents:
diff changeset
542 }
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heinrichsweikamp
parents:
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543 }
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heinrichsweikamp
parents:
diff changeset
544
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parents:
diff changeset
545 _Bool nextSetpointChange(SDiveSettings* pDiveSettings, uint8_t depth_meter, uint8_t* change_depth_meter, char* setpoint)
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heinrichsweikamp
parents:
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546 {
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heinrichsweikamp
parents:
diff changeset
547 uint8_t new_depth = 0;
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heinrichsweikamp
parents:
diff changeset
548 char new_setpoint = 0;
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heinrichsweikamp
parents:
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549 for(int i = 1; i <= 5; i++)
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parents:
diff changeset
550 {
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parents:
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551 if(pDiveSettings->setpoint[i].setpoint_cbar > 0 && pDiveSettings->setpoint[i].depth_meter > 0 )
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heinrichsweikamp
parents:
diff changeset
552 {
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parents:
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553 if( pDiveSettings->setpoint[i].depth_meter > new_depth && pDiveSettings->setpoint[i].depth_meter < depth_meter)
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heinrichsweikamp
parents:
diff changeset
554 {
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555 new_depth = pDiveSettings->setpoint[i].depth_meter;
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heinrichsweikamp
parents:
diff changeset
556 new_setpoint = pDiveSettings->setpoint[i].setpoint_cbar;
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heinrichsweikamp
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557 }
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heinrichsweikamp
parents:
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558 }
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heinrichsweikamp
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559 }
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heinrichsweikamp
parents:
diff changeset
560 if(new_depth)
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heinrichsweikamp
parents:
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561 {
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parents:
diff changeset
562 * change_depth_meter = new_depth;
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heinrichsweikamp
parents:
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563 * setpoint = new_setpoint;
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heinrichsweikamp
parents:
diff changeset
564 return 1;
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heinrichsweikamp
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565 }
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heinrichsweikamp
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566 return 0;
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heinrichsweikamp
parents:
diff changeset
567 }
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heinrichsweikamp
parents:
diff changeset
568
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heinrichsweikamp
parents:
diff changeset
569
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heinrichsweikamp
parents:
diff changeset
570
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heinrichsweikamp
parents:
diff changeset
571 void decom_CreateGasChangeList(SDiveSettings* pInput, const SLifeData* pLifeData)
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heinrichsweikamp
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diff changeset
572 {
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heinrichsweikamp
parents:
diff changeset
573 int i=0, j = 0;
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heinrichsweikamp
parents:
diff changeset
574 int count = 0;
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heinrichsweikamp
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575 for(i=0;i< 5;i++)
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heinrichsweikamp
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576 {
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heinrichsweikamp
parents:
diff changeset
577 //FirstGas
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578
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heinrichsweikamp
parents:
diff changeset
579 pInput->decogaslist[i].change_during_ascent_depth_meter_otherwise_zero = 0;
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heinrichsweikamp
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580 pInput->decogaslist[i].GasIdInSettings = 255;
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heinrichsweikamp
parents:
diff changeset
581 pInput->decogaslist[i].setPoint_cbar = 0;
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heinrichsweikamp
parents:
diff changeset
582 pInput->decogaslist[i].helium_percentage = 0;
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heinrichsweikamp
parents:
diff changeset
583 pInput->decogaslist[i].nitrogen_percentage = 0;
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heinrichsweikamp
parents:
diff changeset
584 }
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heinrichsweikamp
parents:
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585 //pInput->liveData.dive_time_seconds = 0;
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heinrichsweikamp
parents:
diff changeset
586
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heinrichsweikamp
parents:
diff changeset
587 /* FirstGas
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heinrichsweikamp
parents:
diff changeset
588 * 0 = special gas, 1 to 5 ist OC gas, 6 to 10 is diluent
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heinrichsweikamp
parents:
diff changeset
589 */
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heinrichsweikamp
parents:
diff changeset
590
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heinrichsweikamp
parents:
diff changeset
591
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
592
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heinrichsweikamp
parents:
diff changeset
593 pInput->decogaslist[0] = pLifeData->actualGas;
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heinrichsweikamp
parents:
diff changeset
594
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
595 /* Add Deco Gases
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heinrichsweikamp
parents:
diff changeset
596 * special (gasId == 0) is never a deco/travel gas but actual gas only
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heinrichsweikamp
parents:
diff changeset
597 */
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heinrichsweikamp
parents:
diff changeset
598 if(pInput->diveMode == DIVEMODE_OC)
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heinrichsweikamp
parents:
diff changeset
599 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
600
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
601 for(i=1;i<= 5;i++)
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heinrichsweikamp
parents:
diff changeset
602 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
603 if(pInput->gas[i].note.ub.active && pInput->gas[i].depth_meter
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
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604 && (pLifeData->actualGas.GasIdInSettings != i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
605 &&(pInput->gas[i].depth_meter < pLifeData->depth_meter ) )
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heinrichsweikamp
parents:
diff changeset
606 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
607 count = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
608 for(j=1;j<= 5;j++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
609 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
610 if( (pInput->gas[j].note.ub.active && pInput->gas[j].depth_meter > 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
611 && (pLifeData->actualGas.GasIdInSettings != j) // new hw 160905
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
612 && (pInput->gas[j].depth_meter > pInput->gas[i].depth_meter))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
613 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
614 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
615 pInput->decogaslist[count].change_during_ascent_depth_meter_otherwise_zero = pInput->gas[i].depth_meter;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
616 pInput->decogaslist[count].nitrogen_percentage = 100;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
617 pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].oxygen_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
618 pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].helium_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
619 pInput->decogaslist[count].helium_percentage = pInput->gas[i].helium_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
620 pInput->decogaslist[count].GasIdInSettings = i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
621
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
622 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
623 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
624 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
625 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
626 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
627 //divmode CCR
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
628 for(i=6; i <= 10; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
629 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
630 if(pInput->gas[i].note.ub.active && pInput->gas[i].depth_meter
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
631 && (pLifeData->actualGas.GasIdInSettings != i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
632 &&(pInput->gas[i].depth_meter < pLifeData->depth_meter ) )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
633 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
634 count = 1;
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heinrichsweikamp
parents:
diff changeset
635 for(j=6;j<= 10;j++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
636 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
637 // if(pInput->gas[j].note.ub.active && pInput->gas[j].depth_meter > 0 &&pInput->gas[j].depth_meter > pInput->gas[i].depth_meter)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
638 if( (pInput->gas[j].note.ub.active && pInput->gas[j].depth_meter > 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
639 && (pLifeData->actualGas.GasIdInSettings != j) // new hw 160905
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
640 && (pInput->gas[j].depth_meter > pInput->gas[i].depth_meter))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
641 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
642 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
643 pInput->decogaslist[count].change_during_ascent_depth_meter_otherwise_zero = pInput->gas[i].depth_meter;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
644 pInput->decogaslist[count].nitrogen_percentage = 100;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
645 pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].oxygen_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
646 pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].helium_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
647 pInput->decogaslist[count].helium_percentage = pInput->gas[i].helium_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
648 pInput->decogaslist[count].GasIdInSettings = i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
649
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
650 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
651 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
652 /* Include Setpoint Changes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
653 for(j=0; j <= count; j++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
654 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
655 uint8_t depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
656 uint8_t changedepth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
657 char newSetpoint;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
658 if(j == 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
659 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
660 depth = pLifeData->depth_meter;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
661 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
662 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
663 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
664 //no setpointchange ?
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
665 pInput->decogaslist[j].setPoint_cbar = pInput->decogaslist[j - 1].setPoint_cbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
666 depth = pInput->decogaslist[j].change_during_ascent_depth_meter_otherwise_zero + 0.1f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
667 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
668 /* Setpoint change at the same depth as gas changes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
669 if(nextSetpointChange(pInput,depth + 1, &changedepth,&newSetpoint) && changedepth == depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
670 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
671 pInput->decogaslist[j].setPoint_cbar = newSetpoint;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
672 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
673 /* Setpoint changes inbetween gas changes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
674 while(nextSetpointChange(pInput, depth, &changedepth,&newSetpoint)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
675 && (
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
676 ( (j < count) && (changedepth > pInput->decogaslist[j + 1].change_during_ascent_depth_meter_otherwise_zero))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
677 || ((j == count) && (changedepth > 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
678 ))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
679 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
680 //Include new entry with setpoint change in decogaslist
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
681 for(int k = count; k > j; k--)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
682 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
683 pInput->decogaslist[k+1] = pInput->decogaslist[k];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
684 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
685 pInput->decogaslist[j + 1] = pInput->decogaslist[j];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
686 pInput->decogaslist[j + 1].setPoint_cbar = newSetpoint;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
687 j++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
688 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
689 depth = changedepth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
690 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
691
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
692 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
693
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
694 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
695 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
696 void test_decom_CreateGasChangeList(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
697 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
698 SDiveSettings diveSetting;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
699 SLifeData lifeData;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
700 lifeData.depth_meter = 100;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
701 lifeData.actualGas.helium_percentage = 30;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
702 lifeData.actualGas.nitrogen_percentage = 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
703 lifeData.actualGas.setPoint_cbar = 18;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
704 lifeData.actualGas.GasIdInSettings = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
705 lifeData.actualGas.change_during_ascent_depth_meter_otherwise_zero = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
706 diveSetting.diveMode = DIVEMODE_CCR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
707 diveSetting.gas[6].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
708 diveSetting.gas[6].helium_percentage = 30;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
709 diveSetting.gas[6].oxygen_percentage = 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
710 diveSetting.gas[6].note.ub.active = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
711
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
712 diveSetting.gas[7].depth_meter = 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
713 diveSetting.gas[7].helium_percentage = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
714 diveSetting.gas[7].oxygen_percentage = 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
715 diveSetting.gas[7].note.ub.active = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
716 diveSetting.gas[8].note.ub.active = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
717 diveSetting.gas[9].note.ub.active = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
718 diveSetting.gas[10].note.ub.active = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
719
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
720 diveSetting.setpoint[0].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
721 diveSetting.setpoint[1].depth_meter = 80;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
722 diveSetting.setpoint[1].setpoint_cbar = 20;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
723 diveSetting.setpoint[2].depth_meter = 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
724 diveSetting.setpoint[2].setpoint_cbar = 25;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
725 diveSetting.setpoint[3].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
726 diveSetting.setpoint[4].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
727 diveSetting.setpoint[5].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
728
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
729
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
730 decom_CreateGasChangeList(&diveSetting, &lifeData);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
731 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
732
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
733 uint8_t decom_tissue_test_tolerance(float* Tissue_nitrogen_bar, float* Tissue_helium_bar, float GF_value, float depth_in_bar_absolute)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
734 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
735 float tissue_inertgas_saturation;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
736 float inertgas_a;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
737 float inertgas_b;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
738 float inertgas_tolerance;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
739 float gf_minus_1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
740
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
741 gf_minus_1 = GF_value - 1.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
742
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
743 for (int ci = 0; ci < 16; ci++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
744 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
745 if(Tissue_helium_bar[ci] == 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
746 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
747 tissue_inertgas_saturation = Tissue_nitrogen_bar[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
748 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
749 inertgas_a = buehlmann_N2_a[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
750 inertgas_b = buehlmann_N2_b[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
751 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
752 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
753 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
754 tissue_inertgas_saturation = Tissue_nitrogen_bar[ci] + Tissue_helium_bar[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
755 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
756 inertgas_a = ( ( buehlmann_N2_a[ci] * Tissue_nitrogen_bar[ci]) + ( buehlmann_He_a[ci] * Tissue_helium_bar[ci]) ) / tissue_inertgas_saturation;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
757 inertgas_b = ( ( buehlmann_N2_b[ci] * Tissue_nitrogen_bar[ci]) + ( buehlmann_He_b[ci] * Tissue_helium_bar[ci]) ) / tissue_inertgas_saturation;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
758 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
759 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
760 inertgas_tolerance = ( (GF_value / inertgas_b - gf_minus_1) * depth_in_bar_absolute ) + ( GF_value * inertgas_a );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
761 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
762 if(inertgas_tolerance < tissue_inertgas_saturation)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
763 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
764 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
765 return 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
766 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
767
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
768
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
769 void decom_tissues_desaturation_time(const SLifeData* pLifeData, SLifeData2* pOutput)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
770 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
771 float pressure_in_gas_for_complete;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
772 float pressure_in_gas_for_desat;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
773 float diff_to_complete;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
774 float diff_to_desatpoint;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
775 float necessary_halftimes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
776 float desattime;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
777
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
778 pressure_in_gas_for_complete = 0.7902f * ( pLifeData->pressure_surface_bar - 0.0627f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
779 pressure_in_gas_for_desat = 1.05f * pressure_in_gas_for_complete;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
780 for(int i=0; i<16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
781 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
782 diff_to_complete = pressure_in_gas_for_complete - pLifeData->tissue_nitrogen_bar[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
783 diff_to_desatpoint = pressure_in_gas_for_desat - pLifeData->tissue_nitrogen_bar[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
784
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
785 if((diff_to_desatpoint >= 0) || (diff_to_complete >= 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
786 pOutput->tissue_nitrogen_desaturation_time_minutes[i] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
787 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
788 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
789 necessary_halftimes = (logf(1.0f - (diff_to_desatpoint/diff_to_complete)) / -0.6931f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
790 desattime = buehlmann_N2_t_halflife[i] * necessary_halftimes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
791 if(desattime <= (float)0xFFFF)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
792 pOutput->tissue_nitrogen_desaturation_time_minutes[i] = desattime;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
793 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
794 pOutput->tissue_nitrogen_desaturation_time_minutes[i] = 0xFFFF;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
795 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
796 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
797
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
798 for(int i=0; i<16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
799 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
800 diff_to_desatpoint = 0.05f - pLifeData->tissue_helium_bar[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
801 diff_to_complete = -1.0f * pLifeData->tissue_helium_bar[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
802
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
803 if((diff_to_desatpoint >= 0) || (diff_to_complete >= 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
804 pOutput->tissue_helium_desaturation_time_minutes[i] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
805 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
806 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
807 necessary_halftimes = (logf(1.0f - (diff_to_desatpoint/diff_to_complete)) / -0.6931f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
808 desattime = buehlmann_He_t_halflife[i] * necessary_halftimes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
809 if(desattime <= (float)0xFFFF)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
810 pOutput->tissue_helium_desaturation_time_minutes[i] = desattime;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
811 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
812 pOutput->tissue_helium_desaturation_time_minutes[i] = 0xFFFF;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
813 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
814 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
815 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
816
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
817 #define MAX_DEGRADE_OTU_TIME_MINUTES (1440)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
818 //CNS&OTU:
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
819 #define OXY_TEN_MINUTES_IN_SECONDS (600)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
820 #define OXY_HALF_LIVE_OF_TEN_MINUTES__INVERSE_NINTH_ROOT_OF_TWO (0.92587471f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
821 #define OXY_NINE_DAYS_IN_TEN_MINUTES (1296)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
822 #define OXY_ONE_SIXTIETH_PART (0.0166667f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
823 #define OXY_NEGATIVE_FIVE_SIXTH_PARTS (-0.8333333f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
824 void decom_oxygen_calculate_otu(float* oxygen_otu, float pressure_oxygen_real)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
825 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
826 if(pressure_oxygen_real <= 0.5f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
827 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
828 *oxygen_otu += (pow((double)(0.5f / (pressure_oxygen_real - 0.5f)),OXY_NEGATIVE_FIVE_SIXTH_PARTS)) * OXY_ONE_SIXTIETH_PART;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
829 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
830
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
831 void decom_oxygen_calculate_otu_degrade(float* oxygen_otu, long seconds_since_last_dive)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
832 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
833 static long otu_time_ticker = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
834 static double otu_degrade_every_10_minutes = 999.9;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
835 long cycles_since_last_call;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
836
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
837 if((*oxygen_otu <= 0) || (seconds_since_last_dive == 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
838 *oxygen_otu = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
839 else if(seconds_since_last_dive < OXY_TEN_MINUTES_IN_SECONDS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
840 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
841 otu_time_ticker = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
842 otu_degrade_every_10_minutes = *oxygen_otu / (MAX_DEGRADE_OTU_TIME_MINUTES / 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
843 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
844 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
845 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
846 cycles_since_last_call = seconds_since_last_dive / (otu_time_ticker * OXY_TEN_MINUTES_IN_SECONDS);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
847 *oxygen_otu -= ((double)cycles_since_last_call) * otu_degrade_every_10_minutes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
848 otu_time_ticker += cycles_since_last_call;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
849 if((*oxygen_otu < 0) || (otu_time_ticker > (MAX_DEGRADE_OTU_TIME_MINUTES / 10)))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
850 *oxygen_otu = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
851 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
852 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
853
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
854
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
855
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
856 void decom_oxygen_calculate_cns_degrade(float* oxygen_cns, long seconds_since_last_dive)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
857 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
858 static long cns_time_ticker = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
859 int cns_max_cycles;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
860
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
861 if((*oxygen_cns <= 0.5f) || (seconds_since_last_dive == 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
862 *oxygen_cns = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
863 else if(seconds_since_last_dive < OXY_TEN_MINUTES_IN_SECONDS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
864 cns_time_ticker = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
865 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
866 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
867 cns_max_cycles = OXY_NINE_DAYS_IN_TEN_MINUTES;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
868 while((*oxygen_cns >= 0.5f) && ((cns_time_ticker * OXY_TEN_MINUTES_IN_SECONDS) < seconds_since_last_dive) && cns_max_cycles)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
869 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
870 cns_time_ticker++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
871 cns_max_cycles--;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
872 *oxygen_cns *= OXY_HALF_LIVE_OF_TEN_MINUTES__INVERSE_NINTH_ROOT_OF_TWO;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
873 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
874 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
875 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
876
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
877
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
878 // new hwOS style
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
879 void decom_oxygen_calculate_cns(float* oxygen_cns, float pressure_oxygen_real)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
880 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
881 uint8_t char_I_actual_ppO2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
882 float CNS_fraction = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
883 const float time_factor = 3000.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
884
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
885 if(pressure_oxygen_real < 0.15f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
886 char_I_actual_ppO2 = 15;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
887 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
888 if(pressure_oxygen_real >= 2.5f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
889 char_I_actual_ppO2 = 255;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
890 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
891 char_I_actual_ppO2 = (uint8_t)(pressure_oxygen_real * 100);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
892
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
893 if (char_I_actual_ppO2 < 50)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
894 (void)0; // no changes
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
895 //------------------------------------------------------------------------
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
896 // Below (and including) 1.60 bar
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
897 else if (char_I_actual_ppO2 < 61)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
898 CNS_fraction += time_factor/(-533.07f * char_I_actual_ppO2 + 54000.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
899 else if (char_I_actual_ppO2 < 71)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
900 CNS_fraction += time_factor/(-444.22f * char_I_actual_ppO2 + 48600.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
901 else if (char_I_actual_ppO2 < 81)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
902 CNS_fraction += time_factor/(-355.38f * char_I_actual_ppO2 + 42300.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
903 else if (char_I_actual_ppO2 < 91)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
904 CNS_fraction += time_factor/(-266.53f * char_I_actual_ppO2 + 35100.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
905 else if (char_I_actual_ppO2 < 111)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
906 CNS_fraction += time_factor/(-177.69f * char_I_actual_ppO2 + 27000.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
907 else if (char_I_actual_ppO2 < 152)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
908 CNS_fraction += time_factor/( -88.84f * char_I_actual_ppO2 + 17100.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
909 else if (char_I_actual_ppO2 < 167)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
910 CNS_fraction += time_factor/(-222.11f * char_I_actual_ppO2 + 37350.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
911 //------------------------------------------------------------------------
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
912 // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity:
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
913 // J Appl Physiol 92: 248--256, 2002, doi:10.1152/japplphysiol.00434.2001
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
914 // Formula (A1) based on value for 1.55 and c=20
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
915 // example calculation: Sqrt((1.7/1.55)^20)*0.000404
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
916 else if (char_I_actual_ppO2 < 172)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
917 CNS_fraction += time_factor*0.00102f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
918 else if (char_I_actual_ppO2 < 177)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
919 CNS_fraction += time_factor*0.00136f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
920 else if (char_I_actual_ppO2 < 182)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
921 CNS_fraction += time_factor*0.00180f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
922 else if (char_I_actual_ppO2 < 187)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
923 CNS_fraction += time_factor*0.00237f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
924 else if (char_I_actual_ppO2 < 192)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
925 CNS_fraction += time_factor*0.00310f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
926 else if (char_I_actual_ppO2 < 198)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
927 CNS_fraction += time_factor*0.00401f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
928 else if (char_I_actual_ppO2 < 203)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
929 CNS_fraction += time_factor*0.00517f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
930 else if (char_I_actual_ppO2 < 233)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
931 CNS_fraction += time_factor*0.0209f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
932 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
933 CNS_fraction += time_factor*0.0482f; // value for 2.5
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
934
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
935 if( CNS_fraction > 999.0f) // Limit display to 999%
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
936 CNS_fraction = 999.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
937 if( CNS_fraction < 0.0f )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
938 CNS_fraction = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
939
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
940 //calculate cns for the actual ppo2 for 1 second
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
941 *oxygen_cns += OXY_ONE_SIXTIETH_PART * CNS_fraction;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
942
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
943 if( *oxygen_cns > 999.0f) // Limit display to 999%
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
944 *oxygen_cns = 999.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
945 if( *oxygen_cns < 0.0f )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
946 *oxygen_cns = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
947 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
948
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
949 /* old DR5 style
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
950 void decom_oxygen_calculate_cns(float* oxygen_cns, float pressure_oxygen_real)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
951 {
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heinrichsweikamp
parents:
diff changeset
952 int cns_no_range = 0;
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heinrichsweikamp
parents:
diff changeset
953 _Bool not_found = 1;
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heinrichsweikamp
parents:
diff changeset
954 //for the cns calculation
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
955 const float cns_ppo2_ranges[60][2] = {
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heinrichsweikamp
parents:
diff changeset
956 {0.50f, 0.00f}, {0.60f, 0.14f}, {0.64f, 0.15f}, {0.66f, 0.16f}, {0.68f, 0.17f}, {0.70f, 0.18f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
957 {0.74f, 0.19f}, {0.76f, 0.20f}, {0.78f, 0.21f}, {0.80f, 0.22f}, {0.82f, 0.23f}, {0.84f, 0.24f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
958 {0.86f, 0.25f}, {0.88f, 0.26f}, {0.90f, 0.28f}, {0.92f, 0.29f}, {0.94f, 0.30f}, {0.96f, 0.31f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
959 {0.98f, 0.32f}, {1.00f, 0.33f}, {1.02f, 0.35f}, {1.04f, 0.36f}, {1.06f, 0.38f}, {1.08f, 0.40f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
960 {1.10f, 0.42f}, {1.12f, 0.43f}, {1.14f, 0.43f}, {1.16f, 0.44f}, {1.18f, 0.46f}, {1.20f, 0.47f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
961 {1.22f, 0.48f}, {1.24f, 0.51f}, {1.26f, 0.52f}, {1.28f, 0.54f}, {1.30f, 0.56f}, {1.32f, 0.57f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
962 {1.34f, 0.60f}, {1.36f, 0.62f}, {1.38f, 0.63f}, {1.40f, 0.65f}, {1.42f, 0.68f}, {1.44f, 0.71f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
963 {1.46f, 0.74f}, {1.48f, 0.78f}, {1.50f, 0.83f}, {1.52f, 0.93f}, {1.54f, 1.04f}, {1.56f, 1.19f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
964 {1.58f, 1.47f}, {1.60f, 2.22f}, {1.62f, 5.00f}, {1.65f, 6.25f}, {1.67f, 7.69f}, {1.70f, 10.0f},
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
965 {1.72f,12.50f}, {1.74f,20.00f}, {1.77f,25.00f}, {1.79f,31.25f}, {1.80f,50.00f}, {1.82f,100.0f}};
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
966 //find the correct cns range for the corresponding ppo2
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heinrichsweikamp
parents:
diff changeset
967 cns_no_range = 58;
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heinrichsweikamp
parents:
diff changeset
968 while (cns_no_range && not_found)
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heinrichsweikamp
parents:
diff changeset
969 {
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heinrichsweikamp
parents:
diff changeset
970 if (pressure_oxygen_real > cns_ppo2_ranges[cns_no_range][0])
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heinrichsweikamp
parents:
diff changeset
971 {
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heinrichsweikamp
parents:
diff changeset
972 cns_no_range++;
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heinrichsweikamp
parents:
diff changeset
973 not_found = 0;
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heinrichsweikamp
parents:
diff changeset
974 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
975 else
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heinrichsweikamp
parents:
diff changeset
976 cns_no_range--;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
977 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
978
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
979 //calculate cns for the actual ppo2 for 1 second
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heinrichsweikamp
parents:
diff changeset
980 *oxygen_cns += OXY_ONE_SIXTIETH_PART * cns_ppo2_ranges[cns_no_range][1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
981 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
982 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
983
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heinrichsweikamp
parents:
diff changeset
984 void decom_oxygen_calculate_cns_exposure(int period_in_seconds, SGas* pActualGas, float pressure_ambient_bar, float* oxygen_cns)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
985 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
986 float pressure_oxygen_real;
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heinrichsweikamp
parents:
diff changeset
987 float one_second_cns;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
988
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heinrichsweikamp
parents:
diff changeset
989 pressure_oxygen_real = decom_calc_ppO2(pressure_ambient_bar, pActualGas);
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heinrichsweikamp
parents:
diff changeset
990 one_second_cns = 0;
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heinrichsweikamp
parents:
diff changeset
991 decom_oxygen_calculate_cns(&one_second_cns, pressure_oxygen_real);
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heinrichsweikamp
parents:
diff changeset
992 *oxygen_cns += one_second_cns * period_in_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
993 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
994
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
995
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
996 void decom_oxygen_calculate_cns_stage_SchreinerStyle(int period_in_seconds, SGas* pGas, float starting_ambient_pressure_bar, float ending_ambient_pressure_bar, float* oxygen_cns)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
997 {
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heinrichsweikamp
parents:
diff changeset
998 if(ending_ambient_pressure_bar == starting_ambient_pressure_bar)
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heinrichsweikamp
parents:
diff changeset
999 {
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heinrichsweikamp
parents:
diff changeset
1000 decom_oxygen_calculate_cns_exposure(period_in_seconds, pGas, starting_ambient_pressure_bar, oxygen_cns);
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heinrichsweikamp
parents:
diff changeset
1001 return;
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heinrichsweikamp
parents:
diff changeset
1002 }
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heinrichsweikamp
parents:
diff changeset
1003
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1004 float pressure_oxygen_real;
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heinrichsweikamp
parents:
diff changeset
1005 float initial_pressure_oxygen;
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heinrichsweikamp
parents:
diff changeset
1006 float ending_pressure_oxygen;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1007 float rate_oxygen;
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heinrichsweikamp
parents:
diff changeset
1008
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heinrichsweikamp
parents:
diff changeset
1009 initial_pressure_oxygen = decom_calc_ppO2(starting_ambient_pressure_bar, pGas);
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heinrichsweikamp
parents:
diff changeset
1010 ending_pressure_oxygen = decom_calc_ppO2(ending_ambient_pressure_bar, pGas);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1011
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heinrichsweikamp
parents:
diff changeset
1012 rate_oxygen = (ending_pressure_oxygen - initial_pressure_oxygen) / period_in_seconds;
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heinrichsweikamp
parents:
diff changeset
1013
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heinrichsweikamp
parents:
diff changeset
1014 pressure_oxygen_real = initial_pressure_oxygen;
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heinrichsweikamp
parents:
diff changeset
1015 for(int i = 0; i < period_in_seconds; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1016 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1017 decom_oxygen_calculate_cns(oxygen_cns, pressure_oxygen_real);
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heinrichsweikamp
parents:
diff changeset
1018 pressure_oxygen_real += rate_oxygen;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1019 }
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heinrichsweikamp
parents:
diff changeset
1020 }
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heinrichsweikamp
parents:
diff changeset
1021
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1022
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1023 float decom_calc_ppO2(const float ambiant_pressure_bar, const SGas* pGas)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1024 {
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heinrichsweikamp
parents:
diff changeset
1025 float percent_N2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1026 float percent_He = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1027 float percent_O2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1028 decom_get_inert_gases(ambiant_pressure_bar, pGas, &percent_N2, &percent_He);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1029 percent_O2 = 1 - percent_N2 - percent_He;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1030
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heinrichsweikamp
parents:
diff changeset
1031 return (ambiant_pressure_bar - WATER_VAPOUR_PRESSURE) * percent_O2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1032 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1033
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1034
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1035 uint8_t decom_get_actual_deco_stop(SDiveState* pDiveState)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1036 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1037 SDecoinfo* pDecoinfo;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1038 uint8_t depthNext, depthLast, depthSecond, depthInc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1039 if(pDiveState->diveSettings.deco_type.ub.standard == GF_MODE)
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heinrichsweikamp
parents:
diff changeset
1040 pDecoinfo = &pDiveState->decolistBuehlmann;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1041 else
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heinrichsweikamp
parents:
diff changeset
1042 pDecoinfo = &pDiveState->decolistVPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1043
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1044 depthLast = (uint8_t)(pDiveState->diveSettings.last_stop_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1045 depthSecond = (uint8_t)(pDiveState->diveSettings.input_second_to_last_stop_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1046 depthInc = (uint8_t)(pDiveState->diveSettings.input_next_stop_increment_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1047 if(pDecoinfo->output_stop_length_seconds[0] > 0)
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heinrichsweikamp
parents:
diff changeset
1048 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1049 depthNext = depthLast;
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heinrichsweikamp
parents:
diff changeset
1050 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1051 else
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heinrichsweikamp
parents:
diff changeset
1052 return 0;
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heinrichsweikamp
parents:
diff changeset
1053 for(int i = DECOINFO_STRUCT_MAX_STOPS -1 ;i > 0; i--)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1054 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1055 if(pDecoinfo->output_stop_length_seconds[i] > 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1056 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1057 depthNext = depthSecond + ( (i - 1) * depthInc);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1058 break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1059 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1060 }
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heinrichsweikamp
parents:
diff changeset
1061 return depthNext;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1062 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1063
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1064
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1065 // ===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1066 // decom_calc_desaturation_time
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1067 /// @brief This code is used to calculate desat, calculated by RTE and send to Firmware
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1068 /// similar but more technical in code than decom_tissues_desaturation_time()
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1069 /// the later has 0.05 for helium in contrast to this one.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1070 /// This one goes down to 70%, the oterh
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1071 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1072 /// output is desat time in minutes
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1073 // ===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1074 int decom_calc_desaturation_time(float* Tissue_nitrogen_bar, float* Tissue_helium_bar, float surface_pressure_bar)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1075 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1076 const float N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1077
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1078 float pres_surface;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1079 float temp_atem;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1080 float float_desaturation_multiplier;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1081 float temp1,temp2,temp3,temp4;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1082 int ci;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1083 int int_temp;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1084 int int_O_desaturation_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1085 pres_surface = ((float)surface_pressure_bar);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1086 temp_atem = N2_ratio * (pres_surface - 0.0627f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1087
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1088 int_O_desaturation_time = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1089 float_desaturation_multiplier = 100 / 142.0f; // new in v.101 (70,42%/100.=142)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1090
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1091 for (ci=0;ci<16;ci++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1092 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1093 // saturation_time (for flight) and N2_saturation in multiples of halftime
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1094 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1095 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1096 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1097
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1098 // N2
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1099 temp1 = 1.05f * temp_atem;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1100 temp1 = temp1 - (float)Tissue_nitrogen_bar[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1101 temp2 = temp_atem - (float)Tissue_nitrogen_bar[ci];
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heinrichsweikamp
parents:
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1102 if (temp2 >= 0)
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heinrichsweikamp
parents:
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1103 {
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heinrichsweikamp
parents:
diff changeset
1104 temp1 = 0;
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heinrichsweikamp
parents:
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1105 temp2 = 0;
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heinrichsweikamp
parents:
diff changeset
1106 }
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heinrichsweikamp
parents:
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1107 else
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heinrichsweikamp
parents:
diff changeset
1108 temp1 = temp1 / temp2;
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heinrichsweikamp
parents:
diff changeset
1109
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heinrichsweikamp
parents:
diff changeset
1110 if (temp1 > 0)
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heinrichsweikamp
parents:
diff changeset
1111 {
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heinrichsweikamp
parents:
diff changeset
1112 temp1 = logf(1.0f - temp1);
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heinrichsweikamp
parents:
diff changeset
1113 temp1 = temp1 / -0.6931f; // temp1 is the multiples of half times necessary.
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heinrichsweikamp
parents:
diff changeset
1114 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested.
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heinrichsweikamp
parents:
diff changeset
1115 // minus because log is negative
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heinrichsweikamp
parents:
diff changeset
1116 temp2 = buehlmann_N2_t_halflife[ci] * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 10 percent) , new in v.101: float_desaturation_multiplier
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heinrichsweikamp
parents:
diff changeset
1117 }
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heinrichsweikamp
parents:
diff changeset
1118 else
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heinrichsweikamp
parents:
diff changeset
1119 {
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heinrichsweikamp
parents:
diff changeset
1120 temp1 = 0;
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heinrichsweikamp
parents:
diff changeset
1121 temp2 = 0;
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heinrichsweikamp
parents:
diff changeset
1122 }
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heinrichsweikamp
parents:
diff changeset
1123
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heinrichsweikamp
parents:
diff changeset
1124 // He
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heinrichsweikamp
parents:
diff changeset
1125 temp3 = 0.1f - (float)Tissue_helium_bar[ci];
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heinrichsweikamp
parents:
diff changeset
1126 if (temp3 >= 0)
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heinrichsweikamp
parents:
diff changeset
1127 {
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heinrichsweikamp
parents:
diff changeset
1128 temp3 = 0;
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heinrichsweikamp
parents:
diff changeset
1129 temp4 = 0;
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heinrichsweikamp
parents:
diff changeset
1130 }
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heinrichsweikamp
parents:
diff changeset
1131 else
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heinrichsweikamp
parents:
diff changeset
1132 temp3 = -1.0f * temp3 / (float)Tissue_helium_bar[ci];
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heinrichsweikamp
parents:
diff changeset
1133 if (temp3 > 0)
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heinrichsweikamp
parents:
diff changeset
1134 {
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heinrichsweikamp
parents:
diff changeset
1135 temp3 = logf(1.0f - temp3);
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heinrichsweikamp
parents:
diff changeset
1136 temp3 = temp3 / -0.6931f; // temp1 is the multiples of half times necessary.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1137 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1138 // minus because log is negative
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heinrichsweikamp
parents:
diff changeset
1139 temp4 = buehlmann_He_t_halflife[ci] * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier
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heinrichsweikamp
parents:
diff changeset
1140 }
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heinrichsweikamp
parents:
diff changeset
1141 else
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heinrichsweikamp
parents:
diff changeset
1142 {
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heinrichsweikamp
parents:
diff changeset
1143 temp3 = 0;
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heinrichsweikamp
parents:
diff changeset
1144 temp4 = 0;
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heinrichsweikamp
parents:
diff changeset
1145 }
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heinrichsweikamp
parents:
diff changeset
1146
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heinrichsweikamp
parents:
diff changeset
1147 // saturation_time (for flight)
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heinrichsweikamp
parents:
diff changeset
1148 if (temp4 > temp2)
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heinrichsweikamp
parents:
diff changeset
1149 int_temp = (int)temp4;
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heinrichsweikamp
parents:
diff changeset
1150 else
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heinrichsweikamp
parents:
diff changeset
1151 int_temp = (int)temp2;
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heinrichsweikamp
parents:
diff changeset
1152 if(int_temp > int_O_desaturation_time)
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heinrichsweikamp
parents:
diff changeset
1153 int_O_desaturation_time = int_temp;
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heinrichsweikamp
parents:
diff changeset
1154
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heinrichsweikamp
parents:
diff changeset
1155 /*// N2 saturation in multiples of halftime for display purposes
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heinrichsweikamp
parents:
diff changeset
1156 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8
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heinrichsweikamp
parents:
diff changeset
1157 temp2 = temp2 + 80.0; // set center
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heinrichsweikamp
parents:
diff changeset
1158 if (temp2 < 0.0)
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heinrichsweikamp
parents:
diff changeset
1159 temp2 = 0.0;
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heinrichsweikamp
parents:
diff changeset
1160 if (temp2 > 255.0)
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heinrichsweikamp
parents:
diff changeset
1161 temp2 = 255.0;
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heinrichsweikamp
parents:
diff changeset
1162 U8_tissue_N2_saturation[ci] = (U8)temp2;
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heinrichsweikamp
parents:
diff changeset
1163 // He saturation in multiples of halftime for display purposes
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heinrichsweikamp
parents:
diff changeset
1164 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1165 temp4 = temp4 + 80.0; // set center
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1166 if (temp4 < 0.0)
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heinrichsweikamp
parents:
diff changeset
1167 temp4 = 0.0;
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heinrichsweikamp
parents:
diff changeset
1168 if (temp4 > 255.0)
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heinrichsweikamp
parents:
diff changeset
1169 temp4 = 255.0;
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heinrichsweikamp
parents:
diff changeset
1170 U8_tissue_He_saturation[ci] = (char)temp4;*/
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heinrichsweikamp
parents:
diff changeset
1171 }
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heinrichsweikamp
parents:
diff changeset
1172
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heinrichsweikamp
parents:
diff changeset
1173 return int_O_desaturation_time;
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heinrichsweikamp
parents:
diff changeset
1174 }