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A Gas Leakage Localization Method Based on a Virtual Ultrasonic Sensor Array.

Lei Li1, Kuan Yang1, Xiaoyu Bian1

  • 1School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001, China 2 Glasgow College, University of Electronic Science and Technology of China, Chengdu 610000 , China.

Sensors (Basel, Switzerland)
|July 20, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a novel virtual phased array for gas leakage detection, achieving high-resolution localization with just two sensors. This innovative acoustic emission method overcomes limitations of traditional arrays for accurate gas leak identification.

Keywords:
gas leakagelocalizationultrasonic sensorvirtual phased array

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Area of Science:

  • Acoustic Emission Testing
  • Signal Processing
  • Sensor Technology

Background:

  • Traditional acoustic emission methods for gas leakage localization rely on large sensor arrays, leading to low-resolution results due to system complexity and cost.
  • Limitations in amplitude and phase consistency of traditional methods hinder precise localization.
  • Existing techniques are constrained by the spatial aperture, directly correlating with the number of sensors used.

Purpose of the Study:

  • To introduce the first application of a virtual phased array for high-resolution gas leakage detection.
  • To develop and evaluate a novel method for accurate gas leak source estimation.
  • To demonstrate the effectiveness of a two-sensor virtual array system.

Main Methods:

  • Utilized a virtual linear ultrasonic sensor array composed of only two sensors to capture gas leakage acoustic signals.
  • Employed a virtual beamforming algorithm based on the cross-power spectrum for leak source localization.
  • Conducted experimental evaluations to assess the method's performance and operability.

Main Results:

  • The proposed virtual phased array method achieved high-resolution localization of gas leakages.
  • Experimental results validated the accuracy and reliability of the technique.
  • Analysis included the impact of factors like sensor count and distance to the leak hole on localization performance.

Conclusions:

  • The virtual phased array technique offers a significant advancement in gas leakage localization.
  • This method provides accurate and reliable detection with a simplified sensor configuration.
  • The findings suggest a cost-effective and efficient alternative to traditional acoustic emission localization systems.