Title :
A comparison of location methods for pinholes in pipelines
Author :
Watanabe, Kajiro ; Kakishima, Masayuki ; Yokoyama, Kenichi
Author_Institution :
Coll. of Eng., Hosei Univ., Tokyo, Japan
Abstract :
Here, we compare the two acoustic methods named cross-correlation and auto-correlation to locate pinhole locations in a gas-pipeline. The cross-correlation method that determines the location from the cross-correlation of two acoustic signals detected at two terminals of the pipeline is effective for pipelines with greater acoustic damping. Whereas the auto-correlation method that determines the location from the auto-correlation of the acoustic signal detected at one terminal of the pipeline is effective for those with less acoustic damping
Keywords :
acoustic applications; acoustic signal processing; correlation methods; fault location; microphones; signal detection; underground transmission systems; acoustic damping; acoustic methods; acoustic signals; autocorrelation; cross-correlation; gas-pipeline; location methods; pinholes; pipelines; Acoustic measurements; Acoustic propagation; Acoustic signal detection; Autocorrelation; Correlation; Damping; Leak detection; Microphones; Pipelines; Signal detection;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1994. IMTC/94. Conference Proceedings. 10th Anniversary. Advanced Technologies in I & M., 1994 IEEE
Conference_Location :
Hamamatsu
Print_ISBN :
0-7803-1880-3
DOI :
10.1109/IMTC.1994.351983
