A fast and improved dual-PRT Doppler technique for industrial flow metering

A fast and improved dual-PRT Doppler technique for industrial flow metering

Ultrasound velocity profilers (UVP) have their distance range or maximum velocity limited by the Nyquist sampling theorem. Dual-pulse repetition time (PRT) technique employs a non-uniform pulsed ultrasound emission and aset ofdealiasingrules tosurpasstheNyquist limit. Industrialapplications of UVPde...

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Bibliographic Details
Published in:IEEE sensors letters Vol. 7; no. 9; pp. 1 - 4
Main Authors: Coutinho, Fabio R., Stakowian, Andre L., Silva, Marco J. da
Format: Journal Article
Language:English
Published: Piscataway IEEE 01-09-2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Acoustics
Algorithms
Contact angle
dealiasing
Doppler effect
dual-PRF
Estimation
Flow velocity
Industrial applications
Nyquist velocity extension
Outliers (statistics)
Pipe flow
staggered PRF
Transducers
Ultrasonic imaging
Ultrasonic testing
Ultrasonic variables measurement
Velocity
Velocity measurement
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Summary:Ultrasound velocity profilers (UVP) have their distance range or maximum velocity limited by the Nyquist sampling theorem. Dual-pulse repetition time (PRT) technique employs a non-uniform pulsed ultrasound emission and aset ofdealiasingrules tosurpasstheNyquist limit. Industrialapplications of UVPdemandthatthe ultrasoundtransducer be positioned with a contact angle with the flow, which increases velocity estimation variance due to transit-time broadening. In this condition, dual-PRT technique usually presents many outliers in velocity estimation. This paper presents an improved dual-PRT technique that uses an outlier correction algorithm adapted from the Doppler weather radars. The correction algorithm is tested in an industrial horizontal pipe-flow for mean flow velocities ranging from 0.8 to 1.4 m/s. The technique proposed can measure velocities up to 2 times beyond the Nyquist limit and suppresses more than 90% of velocity outliers. Velocity estimation is performed with 128 ultrasound emissions allowing the technique to be applied in real-time applications.
ISSN:2475-1472
2475-1472
DOI:10.1109/LSENS.2023.3307083