Health monitoring and rupture early warning system and method for sewage pipeline based on OFDR

Abstract

The invention discloses a health monitoring and rupture early warning system and method for a sewage pipeline based on an OFDR. The system comprises a distributed optical fiber sensor, a temperature compensating optical fiber, an optical fiber data acquisition and transmission system, an optical fiber data processing and analysis system, a wavelet processing and noise reduction system, a monitoring result display system and an early warning system. The optical fiber is paved on the urban sewage pipeline, the real-time acquisition and transmission of optical fiber data are carried out by usingthe optical fiber data acquisition and transmission system, and then, the optical fiber data are processed through the optical fiber data processing and analysis system to obtain the information, suchas deformation condition, of the sewage pipeline. Then, smoothing and noise reduction processing is carried out on the data through the wavelet processing and noise reduction system, the data are displayed in the monitoring result display system in the forms of a graph and the like, the health information of the sewage pipeline is learned, and early warning is carried out before rupture. The system has the advantages of high precision, high survival rate, distributed measurement and the like and realizes the functions of carrying out health monitoring on pipeline deformation and carrying outrupture early warning.

Description

technical field [0001] The invention relates to a sewage pipeline health monitoring and rupture early warning system, in particular to an OFDR-based sewage pipeline health monitoring and rupture early warning system and method. Background technique [0002] With the continuous deepening of reform and opening up and the continuous improvement of people's living standards, people's requirements for the construction of urban underground sewage pipes are also getting higher and higher, and the number of urban underground sewage pipes is also increasing. However, due to problems such as construction quality and adverse geological effects, many urban underground sewage pipes have undergone large deformations or even cracks, resulting in huge economic losses and greatly affecting people's lives and even people's safety. posed a certain threat. The sewage pipeline health monitoring and rupture warning system based on OFDR can monitor the deformation of sewage pipelines in real time...

AI Technical Summary

Problems solved by technology

However, the anti-sabotage early warning detection method of sewage pipelines based on acoustic signal detection also has many shortcomings: high system complexity, difficult maintenance, short detection distance, etc.

[0004] As an emerging technology, OFDR has the characteristics of high precision and strong anti-interference ability, and has been widely used; however, OFDR technology is more suitable for displacement detection with small strains, and the rupture and deformation of sewage pipes are relatively large, so how to use OFDR technology Reasonable application to deformation monitoring of urban sewage pipes, so that it can cooperate with sewage pipes to deform together and accurately monitor displacement changes has become a technical problem that needs to be solved urgently

At the same time, in order to achieve the purpose of early warning, it is required that the system can automatically collect and process data and compare it with the early warning value, which is also a technical problem

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