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HEV - High Energy Ventilator
Commit ff5f5074 authored by Derick's avatar Derick
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changed calculation of MAINTAIN_O2 state according to documentation, display… 

changed calculation of MAINTAIN_O2 state according to documentation, display calculated fio2 instead of measured
parent f24f19de
Pipeline #992 failed
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Showing with 12 additions and 10 deletions
arduino/hev_prototype_v1/src/BreathingLoop.cpp
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...@@ -254,7 +254,7 @@ void BreathingLoop::updateReadings() ...@@ -254,7 +254,7 @@ void BreathingLoop::updateReadings()
resetReadingSums(); resetReadingSums();
updateFromTargets(); updateFromTargets();
// logging to cross check fio2 with TestChest // logging to cross check fio2 with TestChest
logMsg(String(_targets_current->fiO2_percent)+","+String( _readings_avgs.o2_percent)+","+String(_fiO2_est)); // logMsg(String(_targets_current->fiO2_percent)+","+String( _readings_avgs.o2_percent)+","+String(_fiO2_est * 100.f));
} }
} }
...@@ -293,7 +293,7 @@ void BreathingLoop::updateCycleReadings() ...@@ -293,7 +293,7 @@ void BreathingLoop::updateCycleReadings()
_cycle_index = (_cycle_index == CYCLE_AVG_READINGS-1 ) ? 0 : _cycle_index+1; _cycle_index = (_cycle_index == CYCLE_AVG_READINGS-1 ) ? 0 : _cycle_index+1;
_cycle_readings.timestamp = tnow; _cycle_readings.timestamp = tnow;
_cycle_readings.fiO2_percent = _readings_avgs.o2_percent;// FIXME _cycle_readings.fiO2_percent = _fiO2_est * 100.f; //_readings_avgs.o2_percent;// FIXME
_running_inhale_minute_volume[_cycle_index] = _volume_inhale ; _running_inhale_minute_volume[_cycle_index] = _volume_inhale ;
_running_exhale_minute_volume[_cycle_index] = _volume_exhale ; _running_exhale_minute_volume[_cycle_index] = _volume_exhale ;
_total_cycle_duration[_cycle_index] = ( _total_cycle_duration[_cycle_index] = (
...@@ -758,15 +758,15 @@ void BreathingLoop::doFillFSM() ...@@ -758,15 +758,15 @@ void BreathingLoop::doFillFSM()
case FILL_STATES::MAINTAIN_O2: case FILL_STATES::MAINTAIN_O2:
if(_readings_avgs.pressure_buffer >= _targets_current->buffer_upper_pressure){ if(_readings_avgs.pressure_buffer >= _targets_current->buffer_upper_pressure){
_valves_controller.setFillValves(VALVE_STATE::CLOSED, VALVE_STATE::CLOSED, VALVE_STATE::CLOSED); _valves_controller.setFillValves(VALVE_STATE::CLOSED, VALVE_STATE::CLOSED, VALVE_STATE::CLOSED);
_finished_filling = true; _finished_filling = true;
} else if(_readings_avgs.pressure_buffer < _targets_current->buffer_lower_pressure || !_finished_filling){ } else if(_readings_avgs.pressure_buffer < _targets_current->buffer_lower_pressure || !_finished_filling){
if (_readings_avgs.pressure_buffer < _o2_frac_pressure){ if (_readings_avgs.pressure_buffer < _o2_frac_pressure){
// fill O2 // fill O2
_valves_controller.setFillValves(VALVE_STATE::CLOSED, VALVE_STATE::OPEN, VALVE_STATE::CLOSED); _valves_controller.setFillValves(VALVE_STATE::CLOSED, VALVE_STATE::OPEN, VALVE_STATE::CLOSED);
}else if(_valves_controller.getO2Valve()){ }else if(_valves_controller.getO2Valve()){
// close O2 valve before opening air valve // close O2 valve before opening air valve
_valves_controller.setFillValves(VALVE_STATE::CLOSED, VALVE_STATE::CLOSED, VALVE_STATE::CLOSED); _valves_controller.setFillValves(VALVE_STATE::CLOSED, VALVE_STATE::CLOSED, VALVE_STATE::CLOSED);
}else if (millis() - _time_valve_closure > 20){ }else if (millis() - _time_valve_closure > 20){
// fill air // fill air
_valves_controller.setFillValves(VALVE_STATE::OPEN, VALVE_STATE::CLOSED, VALVE_STATE::CLOSED); _valves_controller.setFillValves(VALVE_STATE::OPEN, VALVE_STATE::CLOSED, VALVE_STATE::CLOSED);
} }
...@@ -1429,9 +1429,10 @@ void BreathingLoop::updateO2Concentration() ...@@ -1429,9 +1429,10 @@ void BreathingLoop::updateO2Concentration()
// O2 valve from open->closed // O2 valve from open->closed
_time_valve_closure = millis(); _time_valve_closure = millis();
if (delta_p < 0){ if (delta_p < 0){
_fill_state = FILL_STATES::AIR_FILL; _fill_state = FILL_STATES::AIR_FILL; // safety precaution: when during O2 filling not enough pressure is provided, fill with air
}else{ }else{
_fiO2_est = (delta_p + _fiO2_est * _pressure_before_filling) / p_buff_now; // _fiO2_est = (delta_p + _fiO2_est * _pressure_before_filling) / p_buff_now; //old
_fiO2_est = _fiO2_est + (1 - _fiO2_est) * (delta_p / p_buff_now);
} }
} }
}else if (vin_air != _valve_air_last_state){ }else if (vin_air != _valve_air_last_state){
...@@ -1441,11 +1442,12 @@ void BreathingLoop::updateO2Concentration() ...@@ -1441,11 +1442,12 @@ void BreathingLoop::updateO2Concentration()
}else{ }else{
// air valve from open->closed // air valve from open->closed
_time_valve_closure = millis(); _time_valve_closure = millis();
// TODO check this calculation // TODO check this calculation
if (delta_p < 0){ if (delta_p < 0){
_fill_state = FILL_STATES::AIR_FILL; _fill_state = FILL_STATES::AIR_FILL;
}else{ }else{
_fiO2_est = 1 - (delta_p * 0.79 +(1 - _fiO2_est) * _pressure_before_filling) / p_buff_now; // _fiO2_est = 1 - (delta_p * 0.79 +(1 - _fiO2_est) * _pressure_before_filling) / p_buff_now;
_fiO2_est = 0.21 + (_fiO2_est - 0.21) * (p_buff_now - delta_p) / p_buff_now;
} }
} }
} }
......
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