Distributed vibration sensing device for preventing cable from being damaged by external force and anti-vibration system

Abstract

The invention discloses a distributed vibration sensing device for preventing a cable from being damaged by external force and an anti-vibration system, and particularly relates to the technical field of distributed optical fiber vibration sensing. According to the technical scheme, the system comprises a monitoring terminal, a vibration sensing, monitoring and alarming host, an optical fiber vibration signal measuring host, a sensing optical fiber, a waterproof box, vibration sensing, monitoring and alarming software and an active vibration isolation and prevention layer, and the sensing optical fiber is electrically connected with the optical fiber vibration signal measuring host. The optical fiber vibration signal measurement host is electrically connected with the vibration sensing monitoring alarm host, the vibration sensing monitoring alarm host and the monitoring terminal share data, the active vibration isolation and shock prevention layer is arranged on the outer side of the sensing optical fiber, the active vibration isolation and shock prevention layer is of a soft frame honeycomb structure. The system has the beneficial effects that an electric power department can measure the vibration condition around the transmission line in real time, and the abnormal occurrence place can be positioned while the transmission line is prevented from being damaged by external force and early warning is realized.

Description

technical field [0001] The invention relates to the technical field of distributed optical fiber vibration sensing, in particular to a distributed vibration sensing device and an anti-vibration system for cables to prevent external force damage. Background technique [0002] Underground cables refer to cables that are often buried underground compared with common overhead lines, so they are also called underground cables. The cables are made of one or more mutually insulated conductors with insulating layers and protective layers. Or the wire that transmits information from one place to another. After entering the modern society, due to the shortage of urban land, high traffic pressure, city appearance construction and other reasons, large cities generally use underground cable transmission methods. Compared with overhead lines, cables have a large area. Small size, reliable power transmission, strong anti-interference ability, etc., the construction plan, protective measure...

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Problems solved by technology

[0006] For this reason, the present invention provides a cable anti-external force damage distributed vibration sensing device and an anti-vibration system. By installing a distributed vibration sensing device, the deformation of the fiber core will cause changes in the length and refractive index of the fiber core, resulting in the loss of light waves in the cable. The phase changes to solve the problem of difficult real-time monitoring and difficult to find a specific location

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