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MSP Gas Metering Library
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MSP Gas Metering Library
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This hanlde is initialized when calling GASMETERING_configureUltrasonicMeasurement and GASMETERING_intializeAlgorithm. More...
#include <gasMeteringLib.h>
Data Fields | |
| float | deltaTOF |
| The computed deltaTOF. | |
| float | totalTOF_UPS |
| The computed total time of flight upstream. | |
| float | totalTOF_DNS |
| The computed total time of flight downstream. | |
| float | volumeFlowRate |
| The computed volume flow rate. | |
| float | volumeScaleFactor |
| The volume scale factor (Area x Length) length^3. | |
| float | dcOffset |
| The constant value calibrated by Zero flow drift (sec) | |
| float | ADCSamplePeriod_sec |
| The duration between two captured samples (1/Fs) | |
| float | ADCStartCaptureInstant_sec |
| float | ADCAdditionalCaptureDelay_sec |
| uint8_t * | arrayTXPtr |
| The pointer to the transmit pulses. | |
| int16_t | arrayLengthTX |
| The length of transmit pulses. | |
| int16_t * | arrayTXbPtr |
| The pointer to the binary transmit pulses. | |
| int16_t | arrayLengthTXb |
| The length of binary transmit pulses. | |
| int16_t * | arrayUPSPtr |
| The pointer to the upstream data array. | |
| int16_t * | arrayDNSPtr |
| The pointer to the downstream data array. | |
| int16_t | arrayLengthDNUP |
| The length of data captured for upstream or downstream. | |
| int16_t * | pDMALEARAMADCArray |
| Pointer to array in LEA RAM memory which holds DMA ADC samples. | |
| uint16_t | dMALEARAMADCArraySize |
| uint16_t | aDCSamplePeriod |
| uint16_t | fracDelay |
| Decimation factor. | |
| uint16_t | upsampleFactor |
| Upsample factor. | |
| float | negRngDeltaTOF |
| float | posRngDeltaTOF |
| float | negRngAbsTOF |
| float | posRngAbsTOF |
| int16_t | corrIdxUPS |
| int16_t | corrIdxDNS |
| bool | Flag_searchForCorrIdxDNS |
| bool | Flag_searchForCorrIdxUPS |
| float | envCrossThreshold |
| float | fracIdxUPS |
| float | fracIdxDNS |
| uint16_t | burstDelay |
| uint16_t | busrtStartDelay |
| GASMETERING_Algorithm_Computation_Mode | computationMode |
| int16_t * | arrayHFIRPtr |
| int16_t | arrayLengthHFIR |
| The length of hilbert co-efficients array. | |
| uint8_t | hFIRCoeffPower2Scale |
| uint8_t | corrValPow2Scale |
| int32_t | corrPeakSqValue |
| The square of the correlation peak which is computed in absolute TOF. | |
| int16_t | firstThresCrossIdx |
| The index location identified as the first threhold crossing value. | |
| float | firstThresCrossing_sec |
| The actual first threhold crossing value in terms of time. | |
| bool | Flag_searchForFirstIdx |
| The flag to enable search for the first correlation lobe threhold crossing value. | |
| bool | isLEAusedHE |
| bool | isLEAusedFTC |
This hanlde is initialized when calling GASMETERING_configureUltrasonicMeasurement and GASMETERING_intializeAlgorithm.
| float GASMETERING_handle::ADCAdditionalCaptureDelay_sec |
The additional time it takes during firing and capturing the data, which is not accounted for anywhere else.
| float GASMETERING_handle::ADCStartCaptureInstant_sec |
The time elapsed from the start of pulse excitation and start of ADC data capture. This relates to the propagation path length.
| int16_t* GASMETERING_handle::arrayHFIRPtr |
The pointer to the hilbert co-efficients array [coeffs = floor(HILBERT_FIR_COEFF_ARRAY*(2^HFF_COEFF_POW2SCALE)]
| GASMETERING_Algorithm_Computation_Mode GASMETERING_handle::computationMode |
The parameter to switch between different algorithms to compute deltaTOF and AbsTOF.
| int16_t GASMETERING_handle::corrIdxDNS |
The index location identified as the correlation peak of the received downstream.
| int16_t GASMETERING_handle::corrIdxUPS |
The index location identified as the correlation peak of the received upstream.
| uint8_t GASMETERING_handle::corrValPow2Scale |
The 2 power index scaling factor by which the correlation ouptut between DNS/UPS and TXbinary have been scaled down.
| uint16_t GASMETERING_handle::dMALEARAMADCArraySize |
ADC array size size is determined is dependent on ADC sampling frequency
| float GASMETERING_handle::envCrossThreshold |
The envelope crossing threshold of correlation output for absolute TOF.
| bool GASMETERING_handle::Flag_searchForCorrIdxDNS |
The flag to check if the peak correlation index has to be searched or it has to only be tracked for downstream.
| bool GASMETERING_handle::Flag_searchForCorrIdxUPS |
The flag to check if the peak correlation index has to be searched or it has to only be tracked for upstream.
| float GASMETERING_handle::fracIdxDNS |
The fractional index location identified as the envelope threshold crossing of the received downstream.
| float GASMETERING_handle::fracIdxUPS |
The fractional index location identified as the envelope threshold crossing of the received upstream.
| uint8_t GASMETERING_handle::hFIRCoeffPower2Scale |
The 2 power index scaling factor by which the hilbert FIR co-efficients have been scaled.
| bool GASMETERING_handle::isLEAusedFTC |
The following flag indicated if Absolute Time Of Flight First Threshold crossing operation was performed with LEA module
| bool GASMETERING_handle::isLEAusedHE |
The following flag indicate if Hilbert Envelope operation used LEA module
| float GASMETERING_handle::negRngAbsTOF |
The max negative index to search across correlation value of UPS/DNS and TX pulse for the matching signal.
| float GASMETERING_handle::negRngDeltaTOF |
The max negative index to search across correlation value of UPS and DNS for the matching signal.
| float GASMETERING_handle::posRngAbsTOF |
The max positive index to search across correlation value of UPS/DNS and TX pulse for the matching signal.
| float GASMETERING_handle::posRngDeltaTOF |
The max positive index to search across correlation value of UPS and DNS for the matching signal.