Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Leak Detection of Circular Piping Systems by Using Unit Impulse Response Function Analysis

단위 충격 응답함수를 이용한 원형관 시스템의 주출감지 연구

  • 전오성 (한국표준과학연구원, 음향진동연구팀) ;
  • 윤병옥 (한국표준과학연구원, 음향진동연구팀) ;
  • 김창호 (한국표준과학연구원,유체유동연구팀)
  • Published : 1994.09.01
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Abstract

A method of the leak detection from the pipe system by using accelerometer is proposed. The signal detected from accelerometer is proved experimentally to be a dispersive wave. Based on the experiments, a method using the narrow band pass filter and the unit impulse response function is analyzed. The method uses the characteristics of the unit impulse response function, that the function is available evenin the narrow band signal because, unlike the cross correlation, it is normalized by the auto spectrum. The accelerometer is quite easier to use than the hydrophone in adapting to the pipe system.

Keywords

References

  1. Engineering Applications of Correlation and Spectral Analysis Bendat,J.S.;Piersol,A.G.
  2. Proc. IMEKO Symp. Detection of Water Leakage Point Using Cross Correlation Method Akizuki,K.(et al.)
  3. Bulletin of Water Works Society(Japanese) v.52 no.3 Technique of Water Leakage Detection Using Cross Correlation Method Shimazaki,H.(et al.)
  4. Measurement and Control(Japanese) v.25 no.10 Fault Detection on Water Work System Dakeda,S.