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- Title
Pipeline Leakage Detection Based on Secondary Phase Transform Cross-Correlation.
- Authors
Liang, Hetao; Gao, Yan; Li, Haibin; Huang, Siyuan; Chen, Minghui; Wang, Baomin
- Abstract
Leaks from pipes and valves are a reputational issue in industry. Maintenance of pipeline integrity is becoming a growing challenge due to the serious socioeconomic consequences. This paper presents a secondary phase transform (PHAT) cross-correlation method to improve the performance of the acoustic methods based on cross-correlation for pipeline leakage detection. Acoustic emission signals generated by pipe leakage are first captured by the sensors at different locations, and are subsequently analyzed using the cross-correlation curve to determine whether leakage is occurring. When leakage occurs, time delay estimation (TDE) is further carried out by peak search in the cross-correlation curve between the two sensor signals. In the analysis, the proposed method calculates the secondary cross-correlation function before the PHAT operation. A sinc interpolation method is then introduced for automatic searching the peak value of the cross-correlation curve. Numerical simulations and experimental results confirm the improved performance of the proposed method for noise suppression and accurate TDE compared to the basic cross-correlation method, which may be beneficial in engineering applications.
- Subjects
LEAK detection; TIME delay estimation; ACOUSTIC emission; PIPELINE maintenance &; repair; PHOTOACOUSTIC spectroscopy; GALERKIN methods; HOUGH transforms
- Publication
Sensors (14248220), 2023, Vol 23, Issue 3, p1572
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s23031572