Feature Extraction Method and Experimental Study of Pipeline Leakage Acoustic Wave Signal
In order to explore the changing rules and signal characteristics in pipeline leakage detec-tion,theoretical research and experimental analysis are carried out.The acoustic wave signals of pipeline leakage under different working conditions are collected,the acoustic wave signals of pipeline leakage are decomposed and reconstructed by using variational mode decomposition,and the corresponding characteristic values are extracted.The characteristic values of pipeline leakage acoustic wave signals un-der different operating pressures,leakage apertures,and locations are processed and compared.The re-sults show that the pipeline operating pressure and leakage aperture are positively correlated with the leakage acoustic wave signal amplitude,while the pipeline leakage location is negatively correlated with the leakage acoustic wave signal amplitude.Thus,when analyzing pipeline leakage in the future,it is necessary to carry out specific analyses according to different working conditions.This provides theoreti-cal and data support for pipeline leakage detection based on the acoustic wave method.
pipeline leakageacoustic wave detection experimentacoustic signal feature extractionvariational mode decomposition
NETL
NSTL
万方数据
