Pipeline deformation monitoring and handheld warning system and method based on BOTDR

Abstract

The invention discloses a pipeline deformation monitoring and handheld warning system and method based on BOTDR (Brillouin Optical Time Domain Reflection). The system comprises a distributed sensing optical cable, a temperature compensation optical cable, a BOTDR automatic data acquisition device, a solar cell panel, a digital signal processing system, a deformation data display terminal, an alarmgenerator, a data server cloud and a handheld warning APP. A strain sensing optical cable is arranged in the wall of a pipeline, and long-distance monitoring of the tension and compression deformation, deflection deformation, pressure state and temperature of the pipeline is realized through distributed optical fiber strain test. The results are uploaded to a network server finally, and the staffcan directly understand the health information of the sewage pipeline through the handheld warning APP. Thus, pipeline rupture prevention and damage detection are realized. The system and the methodhave the advantages of electromagnetic interference resistance, long transmission distance and easy layout, avoid missing monitoring, and can realize long-distance distributed real-time monitoring ofstress-strain and temperature of a large-diameter pipeline.

Description

technical field [0001] The invention relates to a pipeline deformation monitoring and early warning system, in particular to a BOTDR-based pipeline deformation monitoring and handheld early warning system and method. Background technique [0002] The urban sewage pipe network is one of the important urban infrastructure facilities. It is responsible for collecting urban domestic and industrial production sewage and timely removing the rainwater that falls in and flows through the urban area. With the advancement of urbanization, the discharge of urban sewage continues to rise; at the same time, with the continuous development of urban construction, the safety of infrastructure has received more and more attention. As an important part of infrastructure, sewage pipes, once Sudden leaks will have an unpredictable impact on the lives of citizens. How to monitor infrastructure in real time and give early warnings has become the key to solving the problem. In recent years, with ...

AI Technical Summary

Problems solved by technology

However, the BOTDR system requires stable output light, so it has high requirements on the light source and control system

Moreover, since the spontaneous publiouin scattering is quite weak, it is difficult to detect, and the signal processing system is required to have a high signal-to-noise ratio

Not only that, because a large number of signal addition and averaging and frequency scanning processing are required in the monitoring process, it takes a long time to realize a complete measurement, and the real-time performance is not good enough. These technical problems are still waiting for us to solve

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