基于多传感器融合的埋地输水管道泄漏声发射定位方法

Acoustic Emission Localization Method of Buried Water Pipeline Leakage Based on Multi-sensor Fusion

针对无裸露埋地输水管道泄漏源定位难度大、精度差的问题,利用声发射技术,基于贪心策略思想与声发射波衰减理论,构建了多传感器融合策略的埋地输水管道泄漏源定位算法。通过搭建埋地输水管道泄漏模拟试验平台,开展埋地输水管道泄漏试验,对泄漏源定位算法进行验证。试验结果表明:该算法应用贪心策略思想优化了泄漏源检测区域,结合声发射多传感器融合分析,实现了埋地输水管道泄漏源精准定位,定位点平均误差为6.52%,定位区域面积占检测面积3.79%。所提出的埋地管道泄漏源定位方法,能够实现输水管道位置未知情况下泄漏源的精确定位,有效提高泄漏源定位的工作效率,可为埋地供水管网泄漏源定位提供理论和方法基础。

To address the problem of difficulty and poor accuracy in locating the leak source of buried water pipeline without bare ground,a multi-sensor fusion strategy algorithm for locating the leak source of buried water pipeline was constructed based on the idea of greedy strategy and acoustic emission wave attenuation theory using acoustic emission technology.By building a buried water pipeline leakage simulation test platform and conducting buried water pipeline leakage test,the leakage source localization algorithm was verified.The test results show that the algorithm applies the idea of greedy strategy to optimize the leak source detection area,and combines with acoustic emission multi-sensor fusion analysis to realize the accurate localization of buried water pipeline leak source,with the average error of the localization point being 6.52% and the area of the localization area accounting for 3.79% of the detection area.The proposed method for locating the leak source of buried pipelines can realize the precise location of the leak source in the case of unknown location of the transmission pipeline,effectively improve the efficiency of leak source location,and can provide the theoretical and methodological basis for locating the leak source of buried water supply pipeline networks.