供水管道泄漏自适应时延估计法漏点定位研究

Study on the Adaptive Time Delay Estimation Method for Leakage Locating of the Water Supply Pipeline

为解决工业及生活中供水管道泄漏问题,对供水管道漏点定位方法进行了研究。利用供水管道上安装的声发射传感器采集信号,采用自适应时延估计法计算出泄漏信号在上、下游传感器间的时延值;结合两传感器之间的距离及泄漏信号的传播速度,计算出漏点距上下游传感器的距离,即确定漏点的位置。仿真结果表明,该定位方法可靠性好,精度高;自适应时延估计法也适用于确定管道漏点的位置。

In order to solve the leakage problem in living and industrial water supply pipelines, the methods of leakage locating are studied. By using the acoustic emission sensors installed on the water supply pipeline, the signals are acquired, and the time delay between the leakage signal and upstream sensor and downstream sensor are calculated by adopting the adaptive time delay estimation method, and combining the distance between two of the sensors and the propagation velocity of the leakage signal, the distance between leakage point and upstream and downstream sensors are calculated, thus the leakage point is determined. The results of simulation show that the locating method is reliable anti with high accuracy, and the method of adaptive time delay estimation can also be used to determine the leakage point of the pipelines.