Automatic Leak Detection in Buried Plastic Pipes of Water Supply Networks by Means of Vibration Measurements

TLDR

Controlling water leaks is essential to reduce losses in drinking water distribution networks. The study aims to develop an automatic early detection system for burst leaks in service pipes using vibration monitoring techniques. An experimental campaign measured vibrations from real burst leaks in actual water supply networks, and the data were used to evaluate a prototype algorithm that calculates the standard deviation of acceleration signals. The campaign is described, and the prototype algorithm—enhanced with signal filtering—was successfully tested on all monitored leaks, proving effective for leak detection.

Abstract

The implementation of strategies for controlling water leaks is essential in order to reduce losses affecting distribution networks of drinking water. This paper focuses on leak detection by using vibration monitoring techniques. The long-term goal is the development of a system for automatic early detection of burst leaks in service pipes. An experimental campaign was started to measure vibrations transmitted along water pipes by real burst leaks occurring in actual water supply networks. The first experimental data were used for assessing the leak detection performance of a prototypal algorithm based on the calculation of the standard deviation of acceleration signals. The experimental campaign is here described and discussed. The proposed algorithm, enhanced by means of proper signal filtering techniques, was successfully tested on all monitored leaks, thus proving effective for leak detection purpose.