Negative Pressure Waves Based High Resolution Leakage Localization Method Using Piezoceramic Transducers and Multiple Temporal Convolutions.

Guangmin Zhang, Siu Chun Michael Ho, Linsheng Huo, Junxiao Zhu

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Article in Sensors (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 authors.

Guangmin ZhangSchool of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China. zhanggm@dgut.edu.cn.ORCID 0000-0002-7686-8194

Siu Chun Michael HoDepartment of Mechanical Engineering, University of Houston, Houston, TX 77204, USA. smho@uh.edu.

Linsheng HuoState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China. lshuo@dlut.edu.cn.ORCID 0000-0002-3044-2630

Junxiao ZhuDepartment of Mechanical Engineering, University of Houston, Houston, TX 77204, USA. Jzhu10@uh.edu.ORCID 0000-0001-7139-9125

Funding

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6 · The paper itself

Abstract

The negative pressure wave (NPW) signals generated by a pipeline leakage often have a long signal duration. When these signals are utilized to compute the leakage position, the long signal duration will result in a large area being considered as leakage area. The localization resolution is low. A novel high-resolution localization algorithm is developed for pipeline leakage detection using piezoceramic transducers in this paper. The proposed algorithm utilizes multiple temporal convolutions to decrease the localization functional values at the points close to the leakage, in order to reduce the range of the leakage area revealed by the proposed algorithm. As a result, the localization resolution is improved. A measured experiment was conducted to study the proposed algorithm. In the experiment, the proposed algorithm was used to monitor a 55.8 m pressurized pipeline with two controllable valves and two Lead Zirconate Titanate (PZT) sensors. With the aid of the piezoceramic sensor, the experimental results show that the proposed algorithm results in a resolution which is better than that of the traditional method.

Indexed as

leakage detectionleakage localizationmultiple temporal convolutionsnegative pressure wave (NPW)piezoceramic sensor

Identifiers

PMID31035390

DOI10.3390/s19091990

PMCPMC6540103

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