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Related Experiment Video

Updated: Apr 27, 2026

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
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A novel time varying signal processing method for Coriolis mass flowmeter.

Ting-Ao Shen1, Ya-Qing Tu1, Hai-Tao Zhang1

  • 1Department of Information Engineering, Logistical Engineering University, Chongqing 401311, People's Republic of China.

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Summary

This study introduces a new signal processing method to enhance Coriolis mass flowmeter accuracy. The technique improves frequency tracking and phase difference calculations for precise mass flowrate measurements.

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Area of Science:

  • Measurement Science and Instrumentation
  • Signal Processing
  • Fluid Dynamics

Background:

  • The accuracy of Coriolis mass flowmeters is directly impacted by frequency tracking and phase difference calculation precision.
  • Existing methods struggle with time-varying signals, limiting measurement accuracy.
  • Improving mass flowrate measurement is crucial for industrial applications.

Purpose of the Study:

  • To propose a novel signal processing method for Coriolis mass flowmeters to enhance measurement accuracy.
  • To address the limitations of existing methods in handling time-varying signals.
  • To achieve continuous frequency tracking and accurate phase difference calculation.

Main Methods:

  • A modified adaptive lattice notch filter for continuous frequency tracking.
  • A revised sliding recursive discrete-time Fourier transform algorithm for phase difference calculation.
  • Integration of these methods for improved time-varying signal processing in Coriolis mass flowmeters.

Main Results:

  • The proposed method demonstrates continuous frequency tracking capabilities.
  • Accurate phase difference calculations were achieved, even with time-varying signals.
  • The method offers a reduced computational load with higher overall accuracy.

Conclusions:

  • The novel signal processing method effectively improves the accuracy of Coriolis mass flowmeters.
  • Simulation and experimental results validate the proposed approach.
  • This technique provides a more precise and computationally efficient solution for mass flowrate measurement.