annotate Common/Src/decom.c @ 99:6a2308b9a3d4 kittz

Config for debug data
author Dmitry Romanov <kitt@bk.ru>
date Mon, 26 Nov 2018 15:25:52 +0300
parents e941c9e49f73
children 239aa58b533d
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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)
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Ideenmodellierer
parents: 38
diff changeset
260 {
38
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heinrichsweikamp
parents:
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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
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heinrichsweikamp
parents:
diff changeset
264 partial_pressure_N2 = (ambiant_pressure_bar - WATER_VAPOUR_PRESSURE) * percent_N2;
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parents:
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265 partial_pressure_He = (ambiant_pressure_bar - WATER_VAPOUR_PRESSURE) * percent_He;
57
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diff changeset
266 period_in_seconds_left = period_in_seconds;
38
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heinrichsweikamp
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diff changeset
267
57
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
268 while(period_in_seconds_left)
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parents: 38
diff changeset
269 {
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parents: 38
diff changeset
270 if(period_in_seconds_left >= 3600)
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diff changeset
271 period_in_seconds = 3600;
e941c9e49f73 Resolve format warnings
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diff changeset
272 else
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diff changeset
273 if(period_in_seconds_left >= 800)
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diff changeset
274 period_in_seconds = 800;
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diff changeset
275 else
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diff changeset
276 if(period_in_seconds_left >= 300)
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diff changeset
277 period_in_seconds = 300;
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diff changeset
278 else
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diff changeset
279 if(period_in_seconds_left >= 100)
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diff changeset
280 period_in_seconds = 100;
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diff changeset
281 else
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diff changeset
282 if(period_in_seconds_left >= 60)
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diff changeset
283 period_in_seconds = 60;
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diff changeset
284 else
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parents: 38
diff changeset
285 if(period_in_seconds_left == 36)
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diff changeset
286 period_in_seconds = 18;
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diff changeset
287 else
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diff changeset
288 if(period_in_seconds_left >= 20)
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diff changeset
289 period_in_seconds = 20;
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diff changeset
290 else
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parents: 38
diff changeset
291 if(period_in_seconds_left >= 18)
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diff changeset
292 period_in_seconds = 18;
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diff changeset
293 else
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diff changeset
294 if(period_in_seconds_left >= 10)
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diff changeset
295 period_in_seconds = 10;
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diff changeset
296 else
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diff changeset
297 if(period_in_seconds_left >= 8)
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diff changeset
298 period_in_seconds = 8;
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diff changeset
299 else
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diff changeset
300 if(period_in_seconds_left >= 3)
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diff changeset
301 period_in_seconds = 3;
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diff changeset
302 else
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diff changeset
303 period_in_seconds = 1;
38
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304
57
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diff changeset
305 period_in_seconds_left -= period_in_seconds;
38
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306
57
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diff changeset
307 switch (period_in_seconds)
38
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heinrichsweikamp
parents:
diff changeset
308 {
57
e941c9e49f73 Resolve format warnings
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diff changeset
309 case 1:
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diff changeset
310 for (ci=0;ci<16;ci++)
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parents: 38
diff changeset
311 {
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diff changeset
312 tissue_N2_selected_stage[ci] += (partial_pressure_N2 - tissue_N2_selected_stage[ci]) * float_buehlmann_N2_factor_expositon_one_second[ci];
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diff changeset
313 tissue_He_selected_stage[ci] += (partial_pressure_He - tissue_He_selected_stage[ci]) * float_buehlmann_He_factor_expositon_one_second[ci];
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parents: 38
diff changeset
314 }
e941c9e49f73 Resolve format warnings
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parents: 38
diff changeset
315 break;
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diff changeset
316 case 3:
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parents: 38
diff changeset
317 for (ci=0;ci<16;ci++)
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parents: 38
diff changeset
318 {
e941c9e49f73 Resolve format warnings
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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
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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
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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
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
409
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
410 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
411 /* NOTE ABOUT PRESSURE UNITS USED IN CALCULATIONS: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
412 /* It is the convention in decompression calculations to compute all gas */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
413 /* loadings, absolute pressures, partial pressures, etc., in the units of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
414 /* depth pressure that you are diving - either feet of seawater (fsw) or */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
415 /* meters of seawater (msw). This program follows that convention with the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
416 /* the exception that all VPM calculations are performed in SI units (by */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
417 /* necessity). Accordingly, there are several conversions back and forth */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
418 /* between the diving pressure units and the SI units. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
419 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
420 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
421 /* FUNCTION SUBPROGRAM FOR GAS LOADING CALCULATIONS - ASCENT AND DESCENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
422 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
423
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
424
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
425 float decom_schreiner_equation(float *initial_inspired_gas_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
426 float *rate_change_insp_gas_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
427 float *interval_time_minutes,
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heinrichsweikamp
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diff changeset
428 const float *gas_time_constant,
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heinrichsweikamp
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diff changeset
429 float *initial_gas_pressure)
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parents:
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430 {
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heinrichsweikamp
parents:
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431 /* System generated locals */
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diff changeset
432 float ret_val;
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433 float time_null_pressure = 0.0f;
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parents:
diff changeset
434 float time_rest = 0.0f;
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diff changeset
435 float time = *interval_time_minutes;
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heinrichsweikamp
parents:
diff changeset
436 /* =============================================================================== */
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heinrichsweikamp
parents:
diff changeset
437 /* Note: The Schreiner equation is applied when calculating the uptake or */
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heinrichsweikamp
parents:
diff changeset
438 /* elimination of compartment gases during linear ascents or descents at a */
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heinrichsweikamp
parents:
diff changeset
439 /* constant rate. For ascents, a negative number for rate must be used. */
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heinrichsweikamp
parents:
diff changeset
440 /* =============================================================================== */
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441 if( *rate_change_insp_gas_pressure < 0.0f)
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parents:
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442 {
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443 time_null_pressure = -1.0f * *initial_inspired_gas_pressure / *rate_change_insp_gas_pressure;
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parents:
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444 if(time > time_null_pressure )
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parents:
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445 {
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446 time_rest = time - time_null_pressure;
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diff changeset
447 time = time_null_pressure;
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448 }
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449 }
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450 ret_val =
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451 *initial_inspired_gas_pressure +
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heinrichsweikamp
parents:
diff changeset
452 *rate_change_insp_gas_pressure *
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453 (time - 1.f / *gas_time_constant) -
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heinrichsweikamp
parents:
diff changeset
454 (*initial_inspired_gas_pressure -
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heinrichsweikamp
parents:
diff changeset
455 *initial_gas_pressure -
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heinrichsweikamp
parents:
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456 *rate_change_insp_gas_pressure / *gas_time_constant) *
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457 expf(-(*gas_time_constant) * time);
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diff changeset
458
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459 if(time_rest > 0.0f)
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460 {
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461 ret_val = ret_val * expf(-(*gas_time_constant) * time_rest);
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462 }
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heinrichsweikamp
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463
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464
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465 return ret_val;
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466 }; /* schreiner_equation__2 */
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467
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468 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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469 float* pTissue_nitrogen_bar, float* pTissue_helium_bar)
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470 {
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471
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472 float initial_pressure_N2;
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473 float initial_pressure_He;
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474
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475 float ending_pressure_N2;
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diff changeset
476 float ending_pressure_He;
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heinrichsweikamp
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477
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478 float fraction_N2_begin;
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479 float fraction_N2_end;
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heinrichsweikamp
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480 float fraction_He_begin;
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heinrichsweikamp
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481 float fraction_He_end;
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heinrichsweikamp
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482
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heinrichsweikamp
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483 float rate_N2;
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heinrichsweikamp
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diff changeset
484 float rate_He;
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heinrichsweikamp
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485
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486 float period_in_minutes;
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heinrichsweikamp
parents:
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487
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parents:
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488 int ci;
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heinrichsweikamp
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489
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parents:
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490 if(period_in_seconds <= 0)
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491 return;
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heinrichsweikamp
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492
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493 decom_get_inert_gases(starting_ambient_pressure_bar, pGas, &fraction_N2_begin, &fraction_He_begin );
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diff changeset
494 decom_get_inert_gases(ending_ambient_pressure_bar, pGas, &fraction_N2_end, &fraction_He_end );
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heinrichsweikamp
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495
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496 initial_pressure_N2 = (starting_ambient_pressure_bar - WATER_VAPOUR_PRESSURE) * fraction_N2_begin;
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heinrichsweikamp
parents:
diff changeset
497 initial_pressure_He = (starting_ambient_pressure_bar - WATER_VAPOUR_PRESSURE) * fraction_He_begin;
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parents:
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498
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diff changeset
499 ending_pressure_N2 = (ending_ambient_pressure_bar - WATER_VAPOUR_PRESSURE) * fraction_N2_end;
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heinrichsweikamp
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500 ending_pressure_He = (ending_ambient_pressure_bar - WATER_VAPOUR_PRESSURE) * fraction_He_end;
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heinrichsweikamp
parents:
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501
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parents:
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502 rate_N2 = (ending_pressure_N2 - initial_pressure_N2) / period_in_seconds;
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heinrichsweikamp
parents:
diff changeset
503 rate_He = (ending_pressure_He - initial_pressure_He) / period_in_seconds;
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heinrichsweikamp
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504
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505 period_in_minutes = ((float)period_in_seconds) / 60.0f;
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heinrichsweikamp
parents:
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506
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heinrichsweikamp
parents:
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507 for (ci=0;ci<16;ci++)
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heinrichsweikamp
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508 {
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509 pTissue_nitrogen_bar[ci] =
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heinrichsweikamp
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diff changeset
510 decom_schreiner_equation(
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heinrichsweikamp
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diff changeset
511 &initial_pressure_N2,
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heinrichsweikamp
parents:
diff changeset
512 &rate_N2,
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heinrichsweikamp
parents:
diff changeset
513 &period_in_minutes,
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heinrichsweikamp
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diff changeset
514 &nitrogen_time_constant[ci],
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heinrichsweikamp
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diff changeset
515 &pTissue_nitrogen_bar[ci]);
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heinrichsweikamp
parents:
diff changeset
516
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diff changeset
517 pTissue_helium_bar[ci] =
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heinrichsweikamp
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diff changeset
518 decom_schreiner_equation(
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heinrichsweikamp
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diff changeset
519 &initial_pressure_He,
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heinrichsweikamp
parents:
diff changeset
520 &rate_He,
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heinrichsweikamp
parents:
diff changeset
521 &period_in_minutes,
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heinrichsweikamp
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diff changeset
522 &helium_time_constant[ci],
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heinrichsweikamp
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523 &pTissue_helium_bar[ci]);
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heinrichsweikamp
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524 }
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heinrichsweikamp
parents:
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525 }
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heinrichsweikamp
parents:
diff changeset
526
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diff changeset
527 _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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528 {
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diff changeset
529 uint8_t new_depth = 0;
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heinrichsweikamp
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diff changeset
530 char new_setpoint = 0;
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heinrichsweikamp
parents:
diff changeset
531 for(int i = 1; i <= 5; i++)
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heinrichsweikamp
parents:
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532 {
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heinrichsweikamp
parents:
diff changeset
533 if(pDiveSettings->setpoint[i].setpoint_cbar > 0 && pDiveSettings->setpoint[i].depth_meter > 0 )
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heinrichsweikamp
parents:
diff changeset
534 {
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heinrichsweikamp
parents:
diff changeset
535 if( pDiveSettings->setpoint[i].depth_meter > new_depth && pDiveSettings->setpoint[i].depth_meter < depth_meter)
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heinrichsweikamp
parents:
diff changeset
536 {
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heinrichsweikamp
parents:
diff changeset
537 new_depth = pDiveSettings->setpoint[i].depth_meter;
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heinrichsweikamp
parents:
diff changeset
538 new_setpoint = pDiveSettings->setpoint[i].setpoint_cbar;
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heinrichsweikamp
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diff changeset
539 }
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heinrichsweikamp
parents:
diff changeset
540 }
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heinrichsweikamp
parents:
diff changeset
541 }
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heinrichsweikamp
parents:
diff changeset
542 if(new_depth)
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heinrichsweikamp
parents:
diff changeset
543 {
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heinrichsweikamp
parents:
diff changeset
544 * change_depth_meter = new_depth;
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heinrichsweikamp
parents:
diff changeset
545 * setpoint = new_setpoint;
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heinrichsweikamp
parents:
diff changeset
546 return 1;
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heinrichsweikamp
parents:
diff changeset
547 }
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heinrichsweikamp
parents:
diff changeset
548 return 0;
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heinrichsweikamp
parents:
diff changeset
549 }
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heinrichsweikamp
parents:
diff changeset
550
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
551
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
552
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
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553 void decom_CreateGasChangeList(SDiveSettings* pInput, const SLifeData* pLifeData)
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heinrichsweikamp
parents:
diff changeset
554 {
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heinrichsweikamp
parents:
diff changeset
555 int i=0, j = 0;
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heinrichsweikamp
parents:
diff changeset
556 int count = 0;
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heinrichsweikamp
parents:
diff changeset
557 for(i=0;i< 5;i++)
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heinrichsweikamp
parents:
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558 {
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heinrichsweikamp
parents:
diff changeset
559 //FirstGas
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heinrichsweikamp
parents:
diff changeset
560
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heinrichsweikamp
parents:
diff changeset
561 pInput->decogaslist[i].change_during_ascent_depth_meter_otherwise_zero = 0;
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heinrichsweikamp
parents:
diff changeset
562 pInput->decogaslist[i].GasIdInSettings = 255;
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heinrichsweikamp
parents:
diff changeset
563 pInput->decogaslist[i].setPoint_cbar = 0;
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heinrichsweikamp
parents:
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564 pInput->decogaslist[i].helium_percentage = 0;
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heinrichsweikamp
parents:
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565 pInput->decogaslist[i].nitrogen_percentage = 0;
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heinrichsweikamp
parents:
diff changeset
566 }
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heinrichsweikamp
parents:
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567 //pInput->liveData.dive_time_seconds = 0;
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heinrichsweikamp
parents:
diff changeset
568
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heinrichsweikamp
parents:
diff changeset
569 /* FirstGas
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heinrichsweikamp
parents:
diff changeset
570 * 0 = special gas, 1 to 5 ist OC gas, 6 to 10 is diluent
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heinrichsweikamp
parents:
diff changeset
571 */
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heinrichsweikamp
parents:
diff changeset
572
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heinrichsweikamp
parents:
diff changeset
573
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heinrichsweikamp
parents:
diff changeset
574
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heinrichsweikamp
parents:
diff changeset
575 pInput->decogaslist[0] = pLifeData->actualGas;
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heinrichsweikamp
parents:
diff changeset
576
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heinrichsweikamp
parents:
diff changeset
577 /* Add Deco Gases
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heinrichsweikamp
parents:
diff changeset
578 * special (gasId == 0) is never a deco/travel gas but actual gas only
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heinrichsweikamp
parents:
diff changeset
579 */
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heinrichsweikamp
parents:
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580 if(pInput->diveMode == DIVEMODE_OC)
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heinrichsweikamp
parents:
diff changeset
581 {
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heinrichsweikamp
parents:
diff changeset
582
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
583 for(i=1;i<= 5;i++)
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heinrichsweikamp
parents:
diff changeset
584 {
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heinrichsweikamp
parents:
diff changeset
585 if(pInput->gas[i].note.ub.active && pInput->gas[i].depth_meter
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
586 && (pLifeData->actualGas.GasIdInSettings != i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
587 &&(pInput->gas[i].depth_meter < pLifeData->depth_meter ) )
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heinrichsweikamp
parents:
diff changeset
588 {
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heinrichsweikamp
parents:
diff changeset
589 count = 1;
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heinrichsweikamp
parents:
diff changeset
590 for(j=1;j<= 5;j++)
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heinrichsweikamp
parents:
diff changeset
591 {
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heinrichsweikamp
parents:
diff changeset
592 if( (pInput->gas[j].note.ub.active && pInput->gas[j].depth_meter > 0)
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heinrichsweikamp
parents:
diff changeset
593 && (pLifeData->actualGas.GasIdInSettings != j) // new hw 160905
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heinrichsweikamp
parents:
diff changeset
594 && (pInput->gas[j].depth_meter > pInput->gas[i].depth_meter))
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heinrichsweikamp
parents:
diff changeset
595 count++;
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heinrichsweikamp
parents:
diff changeset
596 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
597 pInput->decogaslist[count].change_during_ascent_depth_meter_otherwise_zero = pInput->gas[i].depth_meter;
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heinrichsweikamp
parents:
diff changeset
598 pInput->decogaslist[count].nitrogen_percentage = 100;
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heinrichsweikamp
parents:
diff changeset
599 pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].oxygen_percentage;
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heinrichsweikamp
parents:
diff changeset
600 pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].helium_percentage;
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heinrichsweikamp
parents:
diff changeset
601 pInput->decogaslist[count].helium_percentage = pInput->gas[i].helium_percentage;
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heinrichsweikamp
parents:
diff changeset
602 pInput->decogaslist[count].GasIdInSettings = i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
603
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
604 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
605 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
606 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
607 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
608 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
609 //divmode CCR
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
610 for(i=6; i <= 10; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
611 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
612 if(pInput->gas[i].note.ub.active && pInput->gas[i].depth_meter
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
613 && (pLifeData->actualGas.GasIdInSettings != i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
614 &&(pInput->gas[i].depth_meter < pLifeData->depth_meter ) )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
615 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
616 count = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
617 for(j=6;j<= 10;j++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
618 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
619 // 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
620 if( (pInput->gas[j].note.ub.active && pInput->gas[j].depth_meter > 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
621 && (pLifeData->actualGas.GasIdInSettings != j) // new hw 160905
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
622 && (pInput->gas[j].depth_meter > pInput->gas[i].depth_meter))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
623 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
624 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
625 pInput->decogaslist[count].change_during_ascent_depth_meter_otherwise_zero = pInput->gas[i].depth_meter;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
626 pInput->decogaslist[count].nitrogen_percentage = 100;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
627 pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].oxygen_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
628 pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].helium_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
629 pInput->decogaslist[count].helium_percentage = pInput->gas[i].helium_percentage;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
630 pInput->decogaslist[count].GasIdInSettings = i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
631
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
632 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
633 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
634 /* Include Setpoint Changes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
635 for(j=0; j <= count; j++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
636 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
637 uint8_t depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
638 uint8_t changedepth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
639 char newSetpoint;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
640 if(j == 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
641 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
642 depth = pLifeData->depth_meter;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
643 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
644 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
645 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
646 //no setpointchange ?
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
647 pInput->decogaslist[j].setPoint_cbar = pInput->decogaslist[j - 1].setPoint_cbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
648 depth = pInput->decogaslist[j].change_during_ascent_depth_meter_otherwise_zero + 0.1f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
649 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
650 /* Setpoint change at the same depth as gas changes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
651 if(nextSetpointChange(pInput,depth + 1, &changedepth,&newSetpoint) && changedepth == depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
652 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
653 pInput->decogaslist[j].setPoint_cbar = newSetpoint;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
654 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
655 /* Setpoint changes inbetween gas changes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
656 while(nextSetpointChange(pInput, depth, &changedepth,&newSetpoint)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
657 && (
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
658 ( (j < count) && (changedepth > pInput->decogaslist[j + 1].change_during_ascent_depth_meter_otherwise_zero))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
659 || ((j == count) && (changedepth > 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
660 ))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
661 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
662 //Include new entry with setpoint change in decogaslist
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
663 for(int k = count; k > j; k--)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
664 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
665 pInput->decogaslist[k+1] = pInput->decogaslist[k];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
666 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
667 pInput->decogaslist[j + 1] = pInput->decogaslist[j];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
668 pInput->decogaslist[j + 1].setPoint_cbar = newSetpoint;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
669 j++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
670 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
671 depth = changedepth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
672 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
673
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
674 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
675
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
676 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
677 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
678 void test_decom_CreateGasChangeList(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
679 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
680 SDiveSettings diveSetting;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
681 SLifeData lifeData;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
682 lifeData.depth_meter = 100;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
683 lifeData.actualGas.helium_percentage = 30;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
684 lifeData.actualGas.nitrogen_percentage = 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
685 lifeData.actualGas.setPoint_cbar = 18;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
686 lifeData.actualGas.GasIdInSettings = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
687 lifeData.actualGas.change_during_ascent_depth_meter_otherwise_zero = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
688 diveSetting.diveMode = DIVEMODE_CCR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
689 diveSetting.gas[6].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
690 diveSetting.gas[6].helium_percentage = 30;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
691 diveSetting.gas[6].oxygen_percentage = 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
692 diveSetting.gas[6].note.ub.active = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
693
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
694 diveSetting.gas[7].depth_meter = 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
695 diveSetting.gas[7].helium_percentage = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
696 diveSetting.gas[7].oxygen_percentage = 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
697 diveSetting.gas[7].note.ub.active = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
698 diveSetting.gas[8].note.ub.active = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
699 diveSetting.gas[9].note.ub.active = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
700 diveSetting.gas[10].note.ub.active = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
701
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
702 diveSetting.setpoint[0].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
703 diveSetting.setpoint[1].depth_meter = 80;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
704 diveSetting.setpoint[1].setpoint_cbar = 20;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
705 diveSetting.setpoint[2].depth_meter = 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
706 diveSetting.setpoint[2].setpoint_cbar = 25;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
707 diveSetting.setpoint[3].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
708 diveSetting.setpoint[4].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
709 diveSetting.setpoint[5].depth_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
710
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
711
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
712 decom_CreateGasChangeList(&diveSetting, &lifeData);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
713 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
714
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
715 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
716 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
717 float tissue_inertgas_saturation;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
718 float inertgas_a;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
719 float inertgas_b;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
720 float inertgas_tolerance;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
721 float gf_minus_1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
722
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
723 gf_minus_1 = GF_value - 1.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
724
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
725 for (int ci = 0; ci < 16; ci++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
726 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
727 if(Tissue_helium_bar[ci] == 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
728 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
729 tissue_inertgas_saturation = Tissue_nitrogen_bar[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
730 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
731 inertgas_a = buehlmann_N2_a[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
732 inertgas_b = buehlmann_N2_b[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
733 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
734 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
735 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
736 tissue_inertgas_saturation = Tissue_nitrogen_bar[ci] + Tissue_helium_bar[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
737 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
738 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
739 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
740 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
741 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
742 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
743 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
744 if(inertgas_tolerance < tissue_inertgas_saturation)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
745 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
746 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
747 return 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
748 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
749
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
750
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
751 void decom_tissues_desaturation_time(const SLifeData* pLifeData, SLifeData2* pOutput)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
752 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
753 float pressure_in_gas_for_complete;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
754 float pressure_in_gas_for_desat;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
755 float diff_to_complete;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
756 float diff_to_desatpoint;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
757 float necessary_halftimes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
758 float desattime;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
759
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
760 pressure_in_gas_for_complete = 0.7902f * ( pLifeData->pressure_surface_bar - 0.0627f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
761 pressure_in_gas_for_desat = 1.05f * pressure_in_gas_for_complete;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
762 for(int i=0; i<16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
763 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
764 diff_to_complete = pressure_in_gas_for_complete - pLifeData->tissue_nitrogen_bar[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
765 diff_to_desatpoint = pressure_in_gas_for_desat - pLifeData->tissue_nitrogen_bar[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
766
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
767 if((diff_to_desatpoint >= 0) || (diff_to_complete >= 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
768 pOutput->tissue_nitrogen_desaturation_time_minutes[i] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
769 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
770 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
771 necessary_halftimes = (logf(1.0f - (diff_to_desatpoint/diff_to_complete)) / -0.6931f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
772 desattime = buehlmann_N2_t_halflife[i] * necessary_halftimes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
773 if(desattime <= (float)0xFFFF)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
774 pOutput->tissue_nitrogen_desaturation_time_minutes[i] = desattime;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
775 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
776 pOutput->tissue_nitrogen_desaturation_time_minutes[i] = 0xFFFF;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
777 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
778 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
779
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_desatpoint = 0.05f - pLifeData->tissue_helium_bar[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
783 diff_to_complete = -1.0f * pLifeData->tissue_helium_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_helium_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_He_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_helium_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_helium_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
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
799 #define MAX_DEGRADE_OTU_TIME_MINUTES (1440)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
800 //CNS&OTU:
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
801 #define OXY_TEN_MINUTES_IN_SECONDS (600)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
802 #define OXY_HALF_LIVE_OF_TEN_MINUTES__INVERSE_NINTH_ROOT_OF_TWO (0.92587471f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
803 #define OXY_NINE_DAYS_IN_TEN_MINUTES (1296)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
804 #define OXY_ONE_SIXTIETH_PART (0.0166667f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
805 #define OXY_NEGATIVE_FIVE_SIXTH_PARTS (-0.8333333f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
806 void decom_oxygen_calculate_otu(float* oxygen_otu, float pressure_oxygen_real)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
807 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
808 if(pressure_oxygen_real <= 0.5f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
809 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
810 *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
811 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
812
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
813 void decom_oxygen_calculate_otu_degrade(float* oxygen_otu, long seconds_since_last_dive)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
814 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
815 static long otu_time_ticker = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
816 static double otu_degrade_every_10_minutes = 999.9;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
817 long cycles_since_last_call;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
818
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
819 if((*oxygen_otu <= 0) || (seconds_since_last_dive == 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
820 *oxygen_otu = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
821 else if(seconds_since_last_dive < OXY_TEN_MINUTES_IN_SECONDS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
822 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
823 otu_time_ticker = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
824 otu_degrade_every_10_minutes = *oxygen_otu / (MAX_DEGRADE_OTU_TIME_MINUTES / 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
825 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
826 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
827 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
828 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
829 *oxygen_otu -= ((double)cycles_since_last_call) * otu_degrade_every_10_minutes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
830 otu_time_ticker += cycles_since_last_call;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
831 if((*oxygen_otu < 0) || (otu_time_ticker > (MAX_DEGRADE_OTU_TIME_MINUTES / 10)))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
832 *oxygen_otu = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
833 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
834 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
835
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
836
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
837
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
838 void decom_oxygen_calculate_cns_degrade(float* oxygen_cns, long seconds_since_last_dive)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
839 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
840 static long cns_time_ticker = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
841 int cns_max_cycles;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
842
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
843 if((*oxygen_cns <= 0.5f) || (seconds_since_last_dive == 0))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
844 *oxygen_cns = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
845 else if(seconds_since_last_dive < OXY_TEN_MINUTES_IN_SECONDS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
846 cns_time_ticker = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
847 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
848 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
849 cns_max_cycles = OXY_NINE_DAYS_IN_TEN_MINUTES;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
850 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
851 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
852 cns_time_ticker++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
853 cns_max_cycles--;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
854 *oxygen_cns *= OXY_HALF_LIVE_OF_TEN_MINUTES__INVERSE_NINTH_ROOT_OF_TWO;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
855 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
856 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
857 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
858
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
859
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
860 // new hwOS style
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
861 void decom_oxygen_calculate_cns(float* oxygen_cns, float pressure_oxygen_real)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
862 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
863 uint8_t char_I_actual_ppO2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
864 float CNS_fraction = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
865 const float time_factor = 3000.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
866
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
867 if(pressure_oxygen_real < 0.15f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
868 char_I_actual_ppO2 = 15;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
869 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
870 if(pressure_oxygen_real >= 2.5f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
871 char_I_actual_ppO2 = 255;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
872 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
873 char_I_actual_ppO2 = (uint8_t)(pressure_oxygen_real * 100);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
874
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
875 if (char_I_actual_ppO2 < 50)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
876 (void)0; // no changes
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
877 //------------------------------------------------------------------------
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
878 // Below (and including) 1.60 bar
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
879 else if (char_I_actual_ppO2 < 61)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
880 CNS_fraction += time_factor/(-533.07f * char_I_actual_ppO2 + 54000.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
881 else if (char_I_actual_ppO2 < 71)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
882 CNS_fraction += time_factor/(-444.22f * char_I_actual_ppO2 + 48600.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
883 else if (char_I_actual_ppO2 < 81)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
884 CNS_fraction += time_factor/(-355.38f * char_I_actual_ppO2 + 42300.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
885 else if (char_I_actual_ppO2 < 91)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
886 CNS_fraction += time_factor/(-266.53f * char_I_actual_ppO2 + 35100.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
887 else if (char_I_actual_ppO2 < 111)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
888 CNS_fraction += time_factor/(-177.69f * char_I_actual_ppO2 + 27000.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
889 else if (char_I_actual_ppO2 < 152)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
890 CNS_fraction += time_factor/( -88.84f * char_I_actual_ppO2 + 17100.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
891 else if (char_I_actual_ppO2 < 167)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
892 CNS_fraction += time_factor/(-222.11f * char_I_actual_ppO2 + 37350.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
893 //------------------------------------------------------------------------
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
894 // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity:
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
895 // J Appl Physiol 92: 248--256, 2002, doi:10.1152/japplphysiol.00434.2001
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
896 // Formula (A1) based on value for 1.55 and c=20
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
897 // example calculation: Sqrt((1.7/1.55)^20)*0.000404
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
898 else if (char_I_actual_ppO2 < 172)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
899 CNS_fraction += time_factor*0.00102f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
900 else if (char_I_actual_ppO2 < 177)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
901 CNS_fraction += time_factor*0.00136f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
902 else if (char_I_actual_ppO2 < 182)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
903 CNS_fraction += time_factor*0.00180f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
904 else if (char_I_actual_ppO2 < 187)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
905 CNS_fraction += time_factor*0.00237f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
906 else if (char_I_actual_ppO2 < 192)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
907 CNS_fraction += time_factor*0.00310f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
908 else if (char_I_actual_ppO2 < 198)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
909 CNS_fraction += time_factor*0.00401f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
910 else if (char_I_actual_ppO2 < 203)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
911 CNS_fraction += time_factor*0.00517f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
912 else if (char_I_actual_ppO2 < 233)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
913 CNS_fraction += time_factor*0.0209f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
914 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
915 CNS_fraction += time_factor*0.0482f; // value for 2.5
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
916
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
917 if( CNS_fraction > 999.0f) // Limit display to 999%
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
918 CNS_fraction = 999.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
919 if( CNS_fraction < 0.0f )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
920 CNS_fraction = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
921
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
922 //calculate cns for the actual ppo2 for 1 second
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
923 *oxygen_cns += OXY_ONE_SIXTIETH_PART * CNS_fraction;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
924
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
925 if( *oxygen_cns > 999.0f) // Limit display to 999%
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
926 *oxygen_cns = 999.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
927 if( *oxygen_cns < 0.0f )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
928 *oxygen_cns = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
929 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
930
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
931 /* old DR5 style
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
932 void decom_oxygen_calculate_cns(float* oxygen_cns, float pressure_oxygen_real)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
933 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
934 int cns_no_range = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
935 _Bool not_found = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
936 //for the cns calculation
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
937 const float cns_ppo2_ranges[60][2] = {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
938 {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
939 {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
940 {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
941 {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
942 {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
943 {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
944 {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
945 {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
946 {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
947 {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
948 //find the correct cns range for the corresponding ppo2
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
949 cns_no_range = 58;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
950 while (cns_no_range && not_found)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
951 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
952 if (pressure_oxygen_real > cns_ppo2_ranges[cns_no_range][0])
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
953 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
954 cns_no_range++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
955 not_found = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
956 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
957 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
958 cns_no_range--;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
959 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
960
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
961 //calculate cns for the actual ppo2 for 1 second
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
962 *oxygen_cns += OXY_ONE_SIXTIETH_PART * cns_ppo2_ranges[cns_no_range][1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
963 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
964 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
965
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
966 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
967 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
968 float pressure_oxygen_real;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
969 float one_second_cns;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
970
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
971 pressure_oxygen_real = decom_calc_ppO2(pressure_ambient_bar, pActualGas);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
972 one_second_cns = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
973 decom_oxygen_calculate_cns(&one_second_cns, pressure_oxygen_real);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
974 *oxygen_cns += one_second_cns * period_in_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
975 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
976
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
977
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
978 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
979 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
980 if(ending_ambient_pressure_bar == starting_ambient_pressure_bar)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
981 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
982 decom_oxygen_calculate_cns_exposure(period_in_seconds, pGas, starting_ambient_pressure_bar, oxygen_cns);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
983 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
984 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
985
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
986 float pressure_oxygen_real;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
987 float initial_pressure_oxygen;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
988 float ending_pressure_oxygen;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
989 float rate_oxygen;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
990
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
991 initial_pressure_oxygen = decom_calc_ppO2(starting_ambient_pressure_bar, pGas);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
992 ending_pressure_oxygen = decom_calc_ppO2(ending_ambient_pressure_bar, pGas);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
993
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
994 rate_oxygen = (ending_pressure_oxygen - initial_pressure_oxygen) / period_in_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
995
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
996 pressure_oxygen_real = initial_pressure_oxygen;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
997 for(int i = 0; i < period_in_seconds; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
998 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
999 decom_oxygen_calculate_cns(oxygen_cns, pressure_oxygen_real);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1000 pressure_oxygen_real += rate_oxygen;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1001 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1002 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1003
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1004
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1005 float decom_calc_ppO2(const float ambiant_pressure_bar, const SGas* pGas)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1006 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1007 float percent_N2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1008 float percent_He = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1009 float percent_O2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1010 decom_get_inert_gases(ambiant_pressure_bar, pGas, &percent_N2, &percent_He);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1011 percent_O2 = 1 - percent_N2 - percent_He;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1012
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1013 return (ambiant_pressure_bar - WATER_VAPOUR_PRESSURE) * percent_O2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1014 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1015
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1016
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1017 uint8_t decom_get_actual_deco_stop(SDiveState* pDiveState)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1018 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1019 SDecoinfo* pDecoinfo;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1020 uint8_t depthNext, depthLast, depthSecond, depthInc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1021 if(pDiveState->diveSettings.deco_type.ub.standard == GF_MODE)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1022 pDecoinfo = &pDiveState->decolistBuehlmann;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1023 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1024 pDecoinfo = &pDiveState->decolistVPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1025
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1026 depthLast = (uint8_t)(pDiveState->diveSettings.last_stop_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1027 depthSecond = (uint8_t)(pDiveState->diveSettings.input_second_to_last_stop_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1028 depthInc = (uint8_t)(pDiveState->diveSettings.input_next_stop_increment_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1029 if(pDecoinfo->output_stop_length_seconds[0] > 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1030 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1031 depthNext = depthLast;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1032 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1033 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1034 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1035 for(int i = DECOINFO_STRUCT_MAX_STOPS -1 ;i > 0; i--)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1036 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1037 if(pDecoinfo->output_stop_length_seconds[i] > 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1038 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1039 depthNext = depthSecond + ( (i - 1) * depthInc);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1040 break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1041 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1042 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1043 return depthNext;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1044 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1045
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1046
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1047 // ===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1048 // decom_calc_desaturation_time
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1049 /// @brief This code is used to calculate desat, calculated by RTE and send to Firmware
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1050 /// similar but more technical in code than decom_tissues_desaturation_time()
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1051 /// the later has 0.05 for helium in contrast to this one.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1052 /// This one goes down to 70%, the oterh
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1053 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1054 /// output is desat time in minutes
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1055 // ===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1056 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
1057 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1058 const float N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1059
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1060 float pres_surface;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1061 float temp_atem;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1062 float float_desaturation_multiplier;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1063 float temp1,temp2,temp3,temp4;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1064 int ci;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1065 int int_temp;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1066 int int_O_desaturation_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1067 pres_surface = ((float)surface_pressure_bar);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1068 temp_atem = N2_ratio * (pres_surface - 0.0627f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1069
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1070 int_O_desaturation_time = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1071 float_desaturation_multiplier = 100 / 142.0f; // new in v.101 (70,42%/100.=142)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1072
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1073 for (ci=0;ci<16;ci++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1074 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1075 // saturation_time (for flight) and N2_saturation in multiples of halftime
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1076 // 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
1077 // 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
1078 // 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
1079
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1080 // N2
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1081 temp1 = 1.05f * temp_atem;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1082 temp1 = temp1 - (float)Tissue_nitrogen_bar[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1083 temp2 = temp_atem - (float)Tissue_nitrogen_bar[ci];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1084 if (temp2 >= 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1085 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1086 temp1 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1087 temp2 = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1088 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1089 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1090 temp1 = temp1 / temp2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1091
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1092 if (temp1 > 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1093 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1094 temp1 = logf(1.0f - temp1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1095 temp1 = temp1 / -0.6931f; // temp1 is the multiples of half times necessary.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1096 // 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
1097 // minus because log is negative
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1098 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
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1099 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1100 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1101 {
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heinrichsweikamp
parents:
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1102 temp1 = 0;
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heinrichsweikamp
parents:
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1103 temp2 = 0;
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heinrichsweikamp
parents:
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1104 }
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heinrichsweikamp
parents:
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1105
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heinrichsweikamp
parents:
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1106 // He
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heinrichsweikamp
parents:
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1107 temp3 = 0.1f - (float)Tissue_helium_bar[ci];
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heinrichsweikamp
parents:
diff changeset
1108 if (temp3 >= 0)
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heinrichsweikamp
parents:
diff changeset
1109 {
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heinrichsweikamp
parents:
diff changeset
1110 temp3 = 0;
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heinrichsweikamp
parents:
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1111 temp4 = 0;
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heinrichsweikamp
parents:
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1112 }
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heinrichsweikamp
parents:
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1113 else
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heinrichsweikamp
parents:
diff changeset
1114 temp3 = -1.0f * temp3 / (float)Tissue_helium_bar[ci];
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heinrichsweikamp
parents:
diff changeset
1115 if (temp3 > 0)
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heinrichsweikamp
parents:
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1116 {
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heinrichsweikamp
parents:
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1117 temp3 = logf(1.0f - temp3);
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heinrichsweikamp
parents:
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1118 temp3 = temp3 / -0.6931f; // temp1 is the multiples of half times necessary.
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heinrichsweikamp
parents:
diff changeset
1119 // 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:
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1120 // minus because log is negative
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heinrichsweikamp
parents:
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1121 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:
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1122 }
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heinrichsweikamp
parents:
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1123 else
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heinrichsweikamp
parents:
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1124 {
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heinrichsweikamp
parents:
diff changeset
1125 temp3 = 0;
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heinrichsweikamp
parents:
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1126 temp4 = 0;
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heinrichsweikamp
parents:
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1127 }
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heinrichsweikamp
parents:
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1128
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heinrichsweikamp
parents:
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1129 // saturation_time (for flight)
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heinrichsweikamp
parents:
diff changeset
1130 if (temp4 > temp2)
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heinrichsweikamp
parents:
diff changeset
1131 int_temp = (int)temp4;
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heinrichsweikamp
parents:
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1132 else
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heinrichsweikamp
parents:
diff changeset
1133 int_temp = (int)temp2;
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heinrichsweikamp
parents:
diff changeset
1134 if(int_temp > int_O_desaturation_time)
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heinrichsweikamp
parents:
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1135 int_O_desaturation_time = int_temp;
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heinrichsweikamp
parents:
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1136
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heinrichsweikamp
parents:
diff changeset
1137 /*// N2 saturation in multiples of halftime for display purposes
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heinrichsweikamp
parents:
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1138 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8
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heinrichsweikamp
parents:
diff changeset
1139 temp2 = temp2 + 80.0; // set center
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heinrichsweikamp
parents:
diff changeset
1140 if (temp2 < 0.0)
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heinrichsweikamp
parents:
diff changeset
1141 temp2 = 0.0;
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heinrichsweikamp
parents:
diff changeset
1142 if (temp2 > 255.0)
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heinrichsweikamp
parents:
diff changeset
1143 temp2 = 255.0;
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heinrichsweikamp
parents:
diff changeset
1144 U8_tissue_N2_saturation[ci] = (U8)temp2;
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heinrichsweikamp
parents:
diff changeset
1145 // He saturation in multiples of halftime for display purposes
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heinrichsweikamp
parents:
diff changeset
1146 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8
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heinrichsweikamp
parents:
diff changeset
1147 temp4 = temp4 + 80.0; // set center
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heinrichsweikamp
parents:
diff changeset
1148 if (temp4 < 0.0)
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heinrichsweikamp
parents:
diff changeset
1149 temp4 = 0.0;
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heinrichsweikamp
parents:
diff changeset
1150 if (temp4 > 255.0)
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heinrichsweikamp
parents:
diff changeset
1151 temp4 = 255.0;
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heinrichsweikamp
parents:
diff changeset
1152 U8_tissue_He_saturation[ci] = (char)temp4;*/
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heinrichsweikamp
parents:
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1153 }
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heinrichsweikamp
parents:
diff changeset
1154
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heinrichsweikamp
parents:
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1155 return int_O_desaturation_time;
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heinrichsweikamp
parents:
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1156 }