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High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

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Algorithm to Correct Measurement Offsets Introduced by Inactive Elements of Transducer Arrays in Ultrasonic Flow

Jack Massaad^1,2, Paul L M J van Neer^1,3, Douwe M van Willigen^3,4

¹Laboratory of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.

Sensors (Basel, Switzerland)

|December 11, 2022

Summary

This summary is machine-generated.

This study introduces a new algorithm to correct errors in ultrasonic flow meters (UFMs) caused by broken transducer array elements. The method improves the accuracy and precision of flow measurements, enhancing UFM reliability.

Keywords:

guided waves transducer arrays ultrasonic flow meter

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Area of Science:

Fluid dynamics
Acoustic sensing technologies
Signal processing

Background:

Ultrasonic flow meters (UFMs) utilizing transducer arrays offer advanced features like electronic beam steering and self-calibration.
Failure of transducer array elements in UFMs can lead to measurement offsets due to non-uniform wavefield sampling and ill-defined beam paths.
These offsets negatively impact the accuracy and precision of transit time difference measurements.

Purpose of the Study:

To develop and validate an algorithm for correcting offsets in UFM transit time differences caused by inactive transducer array elements.
To filter spurious wave modes insensitive to flow within the frequency-wavenumber domain.
To enhance the accuracy and precision of flow measurements in UFMs with transducer arrays.

Main Methods:

A novel algorithm is proposed to correct transit time difference offsets arising from inactive array elements.
The algorithm employs frequency-wavenumber domain filtering to remove spurious wave modes.
The method's effectiveness is validated through simulations and experimental measurements.

Main Results:

The proposed algorithm successfully corrects offsets caused by inactive array elements in UFMs.
Improved accuracy and precision in transit time difference measurements were observed compared to non-algorithmic approaches.
The algorithm effectively filters flow-insensitive wave modes, reducing measurement noise.

Conclusions:

The developed algorithm significantly enhances the performance of ultrasonic flow meters with transducer arrays.
This solution is applicable to both in-line and clamp-on UFM configurations.
The algorithm offers a robust method for improving UFM reliability and measurement quality in practical applications.