Browse > Article
http://dx.doi.org/10.7779/JKSNT.2015.35.1.31

Analysis on Signal Properties due to Concurrent Leaks at Two Points in Water Supply Pipelines  

Lee, Young-Sup (Department of Embedded Systems Engineering, Incheon National University)
Publication Information
Abstract
Intelligent leak detection is an essential component of a underground water supply pipeline network such as a smart water grid system. In this network, numerous leak detection sensors are needed to cover all of the pipelines in a specific area installed at specific regular distances. It is also necessary to determine the existence of any leaks and estimate its location within a short time after it occurs. In this study, the leak signal properties and feasibility of leak location detection were investigated when concurrent leaks occurred at two points in a pipeline. The straight distance between the two leak sensors in the 100A sized cast-iron pipeline was 315.6 m, and their signals were measured with one leak and two concurrent leaks. Each leak location was described after analyzing the frequency properties and cross-correlation of the measured signals.
Keywords
Concurrent Leaks at Two Points; Cross-Correlation; Signal Analysis; Time Arrival Difference; Water Leak Detection;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 D. A. Liston and J. D. Liston, "Leak detection techniques," Journal of New England Water Works Association, 1206(2), pp. 103-108 (1992)
2 O. Hunaidi and P. Giamou, "Ground-penetrating radar for detection of leaks in buried plastic water distribution pipes," 7th Int'l Conf. on Ground-Penetrating Radar, Kansas, USA, pp. 783-786 (1998)
3 E. Shaw Cole, "Methods of leak detection: Overview," Journal of American Water Works Association, pp. 73-75 (1979)
4 H. V. Fuchs and R. Riehle, "Ten years of experience with leak detection by acoustic signal analysis," Applied Acoustics, Vol. 33, pp. 1-19 (1991)   DOI
5 O. Hunaidi and W. T. Chu, "Acoustical characteristics of leak signals in plastic water distribution pipes," Applied Acoustics, Vol. 58, pp. 235-254 (1999)   DOI   ScienceOn
6 C. H. Knapp and G. C. Carter, "The generalized correlation method for the estimation of time-delay," IEEE Trans. Acoust., Speech, Signal Processing, 24(4), pp. 320-327 (1976)   DOI
7 Y.-S. Lee, D.-J. Yoon and J.-C. Jeong, "Leak location detection of underground water pipes using acoustic emission and acceleration signals," Journal of the Korean Society for Nondestructive Testing, Vol. 23, No. 3, pp. 89-98 (2003)
8 Y.-S. Lee and D.-J. Yoon, "Improved estimation of leak location of pipelines using frequency band variation," Journal of the Korean Society for Nondestructive Testing, Vol. 34, No. 1, pp. 44-52 (2014)   DOI   ScienceOn