Index: firmware/App/Controllers/ROPump.c =================================================================== diff -u -r025612ad77fe630889a364586de54bffe5262d56 -r550a5df210ac26217412e5e312d0a08864c5682e --- firmware/App/Controllers/ROPump.c (.../ROPump.c) (revision 025612ad77fe630889a364586de54bffe5262d56) +++ firmware/App/Controllers/ROPump.c (.../ROPump.c) (revision 550a5df210ac26217412e5e312d0a08864c5682e) @@ -67,7 +67,7 @@ #define FLOW_SAMPLES_TO_AVERAGE ( 250 / TASK_PRIORITY_INTERVAL ) ///< Averaging flow data over 250 ms intervals. #define FLOW_AVERAGE_MULTIPLIER ( 1.0 / (F32)FLOW_SAMPLES_TO_AVERAGE ) ///< Optimization - multiplying is faster than dividing. -#define RO_FLOW_ADC_TO_LPM_FACTOR 300 ///< Conversion factor from ADC counts to LPM (liters/min) for RO flow rate (multiply this by inverse of FPGA reading). +#define RO_FLOW_ADC_TO_LPM_FACTOR 300.0 ///< Conversion factor from ADC counts to LPM (liters/min) for RO flow rate (multiply this by inverse of FPGA reading). #define ROP_FLOW_TO_PWM_SLOPE 0.1 ///< Slope of flow to PWM line equation. #define ROP_FLOW_TO_PWM_INTERCEPT 0.0 ///< Intercept of flow to PWM line equation. @@ -86,10 +86,11 @@ #define ROP_PSI_TO_PWM_DC(p) ( 0.2 + ( (F32)((p) - 100) * 0.01 ) ) ///< Conversion factor from target PSI to PWM duty cycle estimate. #define SAFETY_SHUTDOWN_TIMEOUT ( 3 * MS_PER_SECOND ) ///< RO pump safety shutdown activation timeout in ms. -#define ROP_FEEDBACK_0_PCT_DUTY_CYCLE_VOLTAGE 0.0 ///< RO pump 0% duty cycle feedback voltage. -#define ROP_FEEDBACK_100_PCT_DUTY_CYCLE_VOLTAGE 2.5 ///< RO pump 100% duty cycle feedback voltage. +#define ROP_FEEDBACK_0_PCT_DUTY_CYCLE_VOLTAGE 2.51 ///< RO pump 0% duty cycle feedback voltage. #define ROP_DUTY_CYCLE_OUT_OF_RANGE_TOLERANCE 0.05 ///< RO pump duty cycle out of range tolerance. +#define DATA_PUBLISH_COUNTER_START_COUNT 50 ///< Data publish counter start count. + /// Enumeration of RO pump states. typedef enum ROPump_States { @@ -138,6 +139,8 @@ static S32 measuredFlowReadingsSum = 0; ///< Raw flow reading sums for averaging. static U32 flowFilterCounter = 0; ///< Flow filtering counter. static DG_FLOW_SENSORS_CAL_RECORD_T flowSensorsCalRecord; ///< Flow sensors calibration record. +static DG_RO_PUMP_CAL_RECORD_T roPumpCalRecord; ///< RO pump calibration record. +static F32 rawFlowLP; ///< Raw flow rate without subtracting the CP1 and CP2 in L/min. // ********** private function prototypes ********** @@ -158,7 +161,7 @@ * @details Inputs: roControlTimerCounter,roPumpOpenLoopTargetDutyCycle, * roPumpFlowRateRunningSum, roPumpPressureRunningSum, measuredFlowReadingsSum, * flowFilterCounter, flowVerificationCounter, roPumpState, roPumpControlMode - * roPumpDataPublicationTimerCounter + * roPumpDataPublicationTimerCounter, rawFlowLP * @details Outputs: none * @return none *************************************************************************/ @@ -190,11 +193,12 @@ roPumpOpenLoopTargetDutyCycle = 0; measuredFlowReadingsSum = 0; flowFilterCounter = 0; - roPumpDataPublicationTimerCounter = 0; + roPumpDataPublicationTimerCounter = DATA_PUBLISH_COUNTER_START_COUNT; roPumpState = RO_PUMP_OFF_STATE; roPumpControlMode = NUM_OF_PUMP_CONTROL_MODES; isROPumpOn = FALSE; roPumpFeedbackDutyCyclePct = 0.0; + rawFlowLP = 0.0; } /*********************************************************************//** @@ -332,7 +336,7 @@ void execROPumpMonitor( void ) { U16 roFlowReading = getFPGAROPumpFlowRate(); - U16 roFeedbackVoltage = getIntADCVoltageConverted( INT_ADC_RO_PUMP_FEEDBACK_DUTY_CYCLE ); + F32 roFeedbackVoltage = getIntADCVoltageConverted( INT_ADC_RO_PUMP_FEEDBACK_DUTY_CYCLE ); // Update sum for flow average calculation measuredFlowReadingsSum += (S32)roFlowReading; @@ -355,14 +359,15 @@ { F32 flow = RO_FLOW_ADC_TO_LPM_FACTOR / ( (F32)measuredFlowReadingsSum * FLOW_AVERAGE_MULTIPLIER ); - flow = flow - ( getMeasuredPumpSpeed( CONCENTRATEPUMPS_CP1_ACID ) / ML_PER_LITER ) - - ( getMeasuredPumpSpeed( CONCENTRATEPUMPS_CP2_BICARB ) / ML_PER_LITER ); + flow = pow(flow, 4) * flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].fourthOrderCoeff + + pow(flow, 3) * flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].thirdOrderCoeff + + pow(flow, 2) * flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].secondOrderCoeff + + flow * flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].gain + + flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].offset; - measuredROFlowRateLPM.data = pow(flow, 4) * flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].fourthOrderCoeff + - pow(flow, 3) * flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].thirdOrderCoeff + - pow(flow, 2) * flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].secondOrderCoeff + - flow * flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].gain + - flowSensorsCalRecord.flowSensors[ CAL_DATA_RO_PUMP_FLOW_SENSOR ].offset; + rawFlowLP = flow; + measuredROFlowRateLPM.data = flow - ( getMeasuredPumpSpeed( CONCENTRATEPUMPS_CP1_ACID ) / ML_PER_LITER ) - + ( getMeasuredPumpSpeed( CONCENTRATEPUMPS_CP2_BICARB ) / ML_PER_LITER ); // If the flow is less than a certain value, FPGA will return 0xFFFF meaning that // the flow is 0. @@ -376,7 +381,9 @@ } #ifndef IGNORE_RO_PUMP_MONITOR - F32 roFeedbackDutyCycle = ROP_FEEDBACK_100_PCT_DUTY_CYCLE_VOLTAGE / roFeedbackVoltage; + // The feedback voltage is on the 0V line so when the duty cycle is 0, the feedback is 2.5V + // The duty cycle is calculated by getting the 1 - (ratio of feedback / to the voltage at 0 percent duty cycle). + roPumpFeedbackDutyCyclePct = 1.0 - ( roFeedbackVoltage / ROP_FEEDBACK_0_PCT_DUTY_CYCLE_VOLTAGE ); // To monitor the flow, the control mode must be in closed loop mode and the pump should be control to flow state // If the pump is controlled to the maximum pressure, the flow might be different from the target flow for more than 10% @@ -395,28 +402,16 @@ checkPersistentAlarm( ALARM_ID_FLOW_RATE_OUT_OF_LOWER_RANGE, isFlowOutOfLowerRange, currentFlow, targetFlow ); } - if ( ( FALSE == isROPumpOn ) && ( roFeedbackVoltage != ROP_FEEDBACK_0_PCT_DUTY_CYCLE_VOLTAGE ) ) - { - checkPersistentAlarm( ALARM_ID_RO_PUMP_DUTY_CYCLE_OUT_OF_RANGE, TRUE, roFeedbackVoltage, ROP_FEEDBACK_0_PCT_DUTY_CYCLE_VOLTAGE ); + // Check whether the Duty cycle is out of range + BOOL isDCOutOfRange = ( fabs( roPumpFeedbackDutyCyclePct - roPumpDutyCyclePctSet ) > ROP_DUTY_CYCLE_OUT_OF_RANGE_TOLERANCE ? TRUE : FALSE ); - // Check if it has timed out - if ( TRUE == isAlarmActive( ALARM_ID_RO_PUMP_DUTY_CYCLE_OUT_OF_RANGE ) ) - { - activateSafetyShutdown(); - } - } + checkPersistentAlarm( ALARM_ID_RO_PUMP_DUTY_CYCLE_OUT_OF_RANGE, isDCOutOfRange, roPumpFeedbackDutyCyclePct, roPumpDutyCyclePctSet ); - if ( TRUE == isROPumpOn ) + // Check if it the alarm has timed out and if the pump is supposed to be off but it is still on, activate the safety shutdown + if ( ( TRUE == isAlarmActive( ALARM_ID_RO_PUMP_DUTY_CYCLE_OUT_OF_RANGE ) ) && ( FALSE == isROPumpOn ) ) { - BOOL isDCOutOfRange = ( fabs( roFeedbackDutyCycle - roPumpDutyCyclePctSet ) > ROP_DUTY_CYCLE_OUT_OF_RANGE_TOLERANCE ? TRUE : FALSE ); - roPumpFeedbackDutyCyclePct = roFeedbackDutyCycle; - - checkPersistentAlarm( ALARM_ID_RO_PUMP_DUTY_CYCLE_OUT_OF_RANGE, TRUE, roFeedbackDutyCycle, roPumpDutyCyclePctSet ); + activateSafetyShutdown(); } - else - { - checkPersistentAlarm( ALARM_ID_RO_PUMP_DUTY_CYCLE_OUT_OF_RANGE, FALSE, roFeedbackDutyCycle, roPumpDutyCyclePctSet ); - } #endif // Publish RO pump data on interval @@ -491,10 +486,14 @@ SELF_TEST_STATUS_T execROPumpSelfTest( void ) { SELF_TEST_STATUS_T result = SELF_TEST_STATUS_IN_PROGRESS; + BOOL calStatus = FALSE; - BOOL calStatus = getNVRecord2Driver( GET_CAL_FLOW_SENSORS, (U08*)&flowSensorsCalRecord, sizeof( DG_FLOW_SENSORS_CAL_RECORD_T ), - NUM_OF_CAL_DATA_FLOW_SENSORS, ALARM_ID_DG_FLOW_SENSORS_INVALID_CAL_RECORD ); + calStatus |= getNVRecord2Driver( GET_CAL_FLOW_SENSORS, (U08*)&flowSensorsCalRecord, sizeof( DG_FLOW_SENSORS_CAL_RECORD_T ), + NUM_OF_CAL_DATA_FLOW_SENSORS, ALARM_ID_DG_FLOW_SENSORS_INVALID_CAL_RECORD ); + calStatus |= getNVRecord2Driver( GET_CAL_RO_PUMP_RECORD, (U08*)&roPumpCalRecord, sizeof( DG_RO_PUMP_CAL_RECORD_T ), + NUM_OF_CAL_DATA_FLOW_SENSORS, ALARM_ID_NO_ALARM ); + if ( TRUE == calStatus ) { result = SELF_TEST_STATUS_PASSED; @@ -809,12 +808,13 @@ { RO_PUMP_DATA_T pumpData; - pumpData.roPumpTgtFlowRate = getTargetROPumpFlowRate(); - pumpData.roPumpTgtPressure = getTargetROPumpPressure(); - pumpData.measROFlowRate = getMeasuredROFlowRateLPM(); - pumpData.roPumpDutyCycle = roPumpDutyCyclePctSet * FRACTION_TO_PERCENT_FACTOR; - pumpData.roPumpState = (U32)roPumpState; - pumpData.roPumpFBDutyCycle = roPumpFeedbackDutyCyclePct * FRACTION_TO_PERCENT_FACTOR; + pumpData.roPumpTgtFlowRateLM = getTargetROPumpFlowRate(); + pumpData.roPumpTgtPressure = getTargetROPumpPressure(); + pumpData.measROFlowRate = getMeasuredROFlowRateLPM(); + pumpData.roPumpDutyCycle = roPumpDutyCyclePctSet * FRACTION_TO_PERCENT_FACTOR; + pumpData.roPumpState = (U32)roPumpState; + pumpData.roPumpFBDutyCycle = roPumpFeedbackDutyCyclePct * FRACTION_TO_PERCENT_FACTOR; + pumpData.roPumpRawFlowRateMLP = rawFlowLP * ML_PER_LITER; broadcastData( MSG_ID_RO_PUMP_DATA, COMM_BUFFER_OUT_CAN_DG_BROADCAST, (U08*)&pumpData, sizeof( RO_PUMP_DATA_T ) );