SLAA889A March   2019  – July 2021 MSP430FR6041 , MSP430FR6043 , MSP430FR60431 , MSP430FR6045 , MSP430FR6047 , MSP430FR60471

 

  1.   Trademarks
  2. 1Flow Metering Background
    1. 1.1 Water Flow Velocity Estimation
      1. 1.1.1 Velocity of Ultrasound in Water is Known
      2. 1.1.2 Velocity of Ultrasound in Water is Unknown
  3. 2Algorithms for Ultrasonic Water Flow Metering
    1. 2.1 Correlation Based Technique for Differential TOF Estimation
    2. 2.2 Absolute Time-of-Flight (AbsTOF) Measurement (Tup and Tdn)
      1. 2.2.1 AbsTOF Calculation
        1. 2.2.1.1 Acquisition Algorithm for AbsTOF
        2. 2.2.1.2 Tracking Algorithm for AbsTOF
  4. 3References
  5. 4Revision History

3 References

  1. National Physical Labs (NPL), Underwater Acoustics, Technical Guides - Speed of Sound in Pure Water http://resource.npl.co.uk/acoustics/techguides/soundpurewater/speedpw.pdf
  2. D.Marioli, C.Narduzzi, C.Offelli, D.Petri, E.Sardini, A.Taroni, Digital time of flight for ultrasonic sensors, IEEE Transactions on Instrumentation and Measurement, Vol. 41, No. 1, February 1992
  3. Charles Knapp, Clifford Carter, The generalized correlation method for estimation of time delay, IEEE Transactions on Acoustics, Speech and Signal Processing, No. 4, August 1976
  4. A Comparison of Time Delay Estimation Methods for Periodic Signals, Travis Wiens, Stuart Bradley, IEEE Transactions on Instrumentation and Measurement, Vol. 41, No. 1, February 1992