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RSS FeedsEnergies, Vol. 12, Pages 3172: Pipeline Leak Detection and Location Based on Model-Free Isolation of Abnormal Acoustic Signals (Energies)

 
 

18 august 2019 17:00:13

 
Energies, Vol. 12, Pages 3172: Pipeline Leak Detection and Location Based on Model-Free Isolation of Abnormal Acoustic Signals (Energies)
 


Pipeline leaks will lead to energy waste, environmental pollution and a threat to human safety. This paper proposes a pipeline leak detection and location method based on the model-free isolation of abnormal (leak and operation) signals. An acoustic signal is first decomposed into “sub-signals” according to its zero-crossing points. Then, based on the definition of signal-to-noise ratio (SNR), the function between the SNR of sub-signal and the number of abnormal sub-signals is established, following which the position of each abnormal sub-signal in the acoustic signal is obtained by tracing its index. Based on this and the cross-correlation analysis, the operation sub-signals can be filtered, which is helpful for the precise leak location. The experimental results demonstrate the computational efficiency and lower false/missing alarm rate of the proposed method that provides an innovative solution for pipeline leak detection.


 
228 viewsCategory: Biophysics, Biotechnology, Physics
 
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Energies, Vol. 12, Pages 3171: Power Output Enhancement of a Ducted Wind Turbine by Stabilizing Vortices around the Duct (Energies)
 
 
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