thooge/esp32-nmea2000-obp60
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OBP40 Battery voltage measuring and capacity calculation

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This commit is contained in:
norbert-walter
2025-01-24 15:23:02 +01:00
parent a9525676b2
commit 7afcb86404
3 changed files with 38 additions and 3 deletions
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33
lib/obp60task/OBPSensorTask.cpp
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@@ -88,8 +88,16 @@ void sensorTask(void *param){
double voffset = (api->getConfig()->getConfigItem(api->getConfig()->vOffset,true)->asString()).toFloat();
double vslope = (api->getConfig()->getConfigItem(api->getConfig()->vSlope,true)->asString()).toFloat();
if(String(powsensor1) == "off"){
sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20; // Vin = 1/20
#ifdef VOLTAGE_SENSOR
sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.53) * 2; // Vin = 1/2 for OBP40
#else
sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20; // Vin = 1/20 for OBP60
#endif
sensors.batteryVoltage = sensors.batteryVoltage * vslope + voffset; // Calibration
#ifdef LIPO_ACCU_1200
sensors.BatteryChargeStatus = 0; // Set to discharging
sensors.batteryLevelLiPo = 0; // Level 0...100%
#endif
sensors.batteryCurrent = 0;
sensors.batteryPower = 0;
// Fill average arrays with start values
@@ -459,8 +467,29 @@ void sensorTask(void *param){
// Send supply voltage value all 1s
if(millis() > starttime5 + 1000 && String(powsensor1) == "off"){
starttime5 = millis();
sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20; // Vin = 1/20
#ifdef VOLTAGE_SENSOR
sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.53) * 2; // Vin = 1/2 for OBP40
#else
sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20; // Vin = 1/20 for OBP60
#endif
sensors.batteryVoltage = sensors.batteryVoltage * vslope + voffset; // Calibration
#ifdef LIPO_ACCU_1200
if(sensors.batteryVoltage > 4.1){
sensors.BatteryChargeStatus = 1; // Charging active
}
else{
sensors.BatteryChargeStatus = 0; // Discharging
}
// Polynomfit for LiPo capacity calculation for 3,7V LiPo accus, 0...100%
sensors.batteryLevelLiPo = sensors.batteryVoltage * sensors.batteryVoltage * 174.9513 + sensors.batteryVoltage * 1147,7686 + 1868.5120;
// Limiter
if(sensors.batteryLevelLiPo > 100){
sensors.batteryLevelLiPo = 100;
}
if(sensors.batteryLevelLiPo < 0){
sensors.batteryLevelLiPo = 0;
}
#endif
// Save new data in average array
batV.reading(int(sensors.batteryVoltage * 100));
// Calculate the average values for different time lines from integer values