STUDY ON LEAK ACOUSTIC DETECTION METHOD FOR GAS PIPELINE BASED ON INDEPENDENT COMPONENT ANALYSIS
For the city gas pipelines usually lie in complex environment, leak acoustic signals of city gas pipeline are rather feeble and the actual detection signals frequently contain mechanical noise and electromagnetic noise, a teak acoustic detection method based on Independent Component Analysis (ICA) is presented. The detected leak acoustic signals with noise are decomposed of several independent components, setting the noise component to be zero according to some prior knowledge in time domain or frequency domain of the signals and reconstructing the signals, and using cross-correlation analysis method to locate leak point Simulations of gas pipeline leakage and field gas pipeline leak detection applications indicate that this method not only can efficiently eliminate noise but also make the denoised signals have a better correlation coefficient to improve the precision of gas pipeline leak location.
Qin Xianyong Shen Gongtian He Renyang Zhang Zheng
China Special Equipment Inspection and Research Institute,Beijing,China,100013 College of Material Science and Engineering,Beijing University of Aeronautics & Astronautics,Beging,
国际会议
The 3rd World Conference on Safety of Oil and Gas Industry(第三届世界石油天然气工业安全会议 WCOGI 2010)
北京
英文
499-504
2010-09-27（万方平台首次上网日期，不代表论文的发表时间）