Method and device for preventing cable along highway from being stolen through early warning

Abstract

The invention discloses a method and device for preventing a cable along a highway from being stolen through early warning. The method comprises the steps: 1, simultaneously laying a sensing optical cable and the cable along the highway; 2, connecting a sensing optical cable terminal box with a main controller by adopting a guide optical cable; 3, extracting a vibration waveform of a distribution region of the cable along the highway by adopting a light source module, an optical path coupling module and an optical detection module inside the main controller; 4, analyzing waveform characteristics of a vibrating signal of an optical fiber under two kinds of elements; 5, extracting a signal output by the main controller by adopting a main control computer; 6, alarming a vibration element and recording in a waveform characteristic database, wherein the sensing optical cable terminal box is respectively connected with the sensing optical cable, the cable and the guide optical cable, the main controller is connected with the guide optical cable, the main controller is connected with an optical fiber signal analyzer through the guide optical cable, and the optical fiber signal analyzer is connected with the main control computer. According to the method, the alarming probability is increased, the missed alarming probability is reduced, the false alarm probability is reduced, the locating precision is improved, and the response time is shortened.

Description

technical field [0001] The invention belongs to the field of traffic information engineering, and specifically relates to a method for early warning and anti-theft of cables along expressways starting from optical fiber micro-vibration, and also relates to a device for early warning and anti-theft of cables along expressways starting from optical fiber micro-vibration , suitable for early warning and anti-theft work of cables along expressways. Background technique [0002] Expressway traffic engineering facilities include monitoring system, toll system, communication system, etc., which are important technical means for information collection, information transmission, and control management of expressway traffic conditions. They are composed of a large number of outfield electromechanical equipment and indoor computer network systems. A considerable distance of unattended power cables to ensure its normal operation. [0003] However, highway high and low voltage cables ha...

AI Technical Summary

Problems solved by technology

However, this type of technology will report to the police after the cable is stolen, so it cannot prevent problems before they happen, and the loss caused by the cable being stolen is still unavoidable.

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