Intelligent in-pipe detection ball device for leakage locating of urban water supply network and method

Abstract

The invention discloses an intelligent in-pipe detection ball device for leakage locating of an urban water supply network and a method. The device comprises a sound detection module, an amplifying and filtering module, an analog-digital conversion module, a pressure measurement module, a vibration measurement module, an inertial navigation module, a single-chip microcomputer, an RFID reader, a storage module and a power module. The detection ball device is put into a water supply pipeline and rolls along the inner wall of the pipeline under pushing of water flow; by means of a sound sensor, a pressure sensor and a vibration sensor in the device, whether leakage happens to the water supply pipeline or not is detected based on a multisensor fusion method; and a leakage point is precisely located through the inertial navigation and RFID combination locating manner, and detected leakage information is transmitted to an upper computer through the RFID technology in a wireless manner to be further analyzed and processed. According to the intelligent in-pipe detection ball device and the method, leakage detection and locating can be carried out in the water supply pipeline, and the reliability and accuracy of leakage detection of the water supply network are effectively improved.

Description

technical field [0001] The invention relates to pipe network leak location, in particular to an intelligent in-pipe detection ball device and method for leak location of urban water supply pipe network. Background technique [0002] my country is a country with a large population and insufficient water resources per capita. However, the leakage of water supply pipelines in my country often occurs. The leakage rate of water supply pipelines in cities is about 16%, while that in developed countries is below 9%. The gap is very obvious. Leaks in water supply networks are one of the main causes of water waste. [0003] The existing pipeline leakage detection methods are divided into detection signal types, mainly including methods based on non-acoustic signals and methods based on acoustic signals. Methods based on non-acoustic signals include pressure gradient method, negative pressure wave method, flow balance method, etc., but these methods are difficult to model in complex...

AI Technical Summary

Problems solved by technology

Methods based on non-acoustic signals include pressure gradient method, negative pressure wave method, flow balance method, etc., but these methods are difficult to model in complex pipeline network leakage detection; The advantages of simplicity, high efficiency, low limitations, and good adaptability to different pipe network layouts are widely used in pipeline leakage detection and location

However, due to the lack of understanding of the mechanism and characteristics of leakage sound, various existing leakage detection methods are often limited in application, and the misjudgment and missed judgment rate of leakage are high, especially in the detection site. When interfering noise sources or only small leaks exist

Aiming at the actual leakage location problem faced by the water supply pipeline, various location methods are not perfect enough, for example, due to the long-term burial of the water supply pipeline, the pipeline structure is disordered, and some underground pipeline layout lacks information

At present, in practical applications, those leak detection and location technologies that lay out a large number of sensors in advance are limited in practical applications.

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