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首页> 外文会议>International conference on pipelines and trenchless technology;ICPTT 2011 >Simulation of Gas Pipeline Leak Detection Based on Acoustic Emission and Wavelet Packet Analysis
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Simulation of Gas Pipeline Leak Detection Based on Acoustic Emission and Wavelet Packet Analysis

机译：基于声发射和小波包分析的输气管道泄漏检测仿真

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摘要

In this article acoustic emission sensors were used to detect simulation of gas pipeline leak and the acoustic emission signals of a pipeline leak were obtained. Acoustic emission technology was adopted to detect pipeline leak. First wavelet packet decomposition methods were used to decompose the acoustic emission signals; then the attenuated signals were remedied effectively at different frequencies. The cross-correlation technology was used to calculate the delay-time received by the two acoustic emission sensors. This method effectively solved the difficulty that the existing acoustic emission system was difficult to detect continuous signals, such as pipeline leakage giving a larger leakage location error. The proposed method pipeline leakage location error is less than 8%.
机译：在本文中，声发射传感器用于检测气体管道泄漏的模拟，并获得管道泄漏的声发射信号。采用声发射技术来检测管道泄漏。第一个小波分组分解方法用于分解声发射信号;然后在不同的频率下有效地修复衰减信号。互相关技术用于计算两个声发射传感器接收的延迟时间。该方法有效地解决了现有声发射系统难以检测连续信号的困难，例如管道泄漏，这给出了更大的泄漏位置误差。所提出的方法管道泄漏位置误差小于8％。

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