Title :
Pinhole location in a pipeline
Author :
Watanabe, Kajiro ; Koyama, Hiroshi ; Tanoguchi, Hiroshi ; Ohma, Toshiro
Author_Institution :
Dept. of Instrum. & Control Eng., Hosei Univ., Tokyo, Japan
fDate :
28 Oct-1 Nov 1991
Abstract :
A novel method based on an acoustic approach is described for carrying a pinhole occurring in a closed, empty liquid pipe. The method requires only one microphone set at a terminal in the closed pipeline. A simple algorithm applying the fourier transformation to the acoustic signal detected by the microphone yields the accurate location of the pinhole site of the pipeline. Laboratory experiments validated the proposed pinhole location method. The method located a circular pinhole, with a 0.3 mm diameter, in the pipe. The results were unique, clear, and accurate
Keywords :
Fourier transforms; acoustic applications; leak detection; microphones; pipe flow; 0.3 mm; acoustic signal; empty liquid pipe; fourier transformation; microphone set; pinhole location; pipeline; Acoustic noise; Acoustic pulses; Acoustic testing; Instruments; Leak detection; Microphones; Pipelines; Pulse measurements; System testing; Transportation;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1991. Proceedings. IECON '91., 1991 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-87942-688-8
DOI :
10.1109/IECON.1991.238952
