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

A technology along expressways and lines, applied in the field of traffic information engineering, can solve problems such as not being able to prevent problems before they occur, and achieve the effect of improving event positioning accuracy, long transmission distance, and improving positioning accuracy.

Active Publication Date: 2014-09-03
CCCC SECOND HIGHWAY CONSULTANTS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0040] According to the principle of optical fiber micro-vibration, the present invention proposes a design method for early warning and anti-theft of cables along the expressway: when the cable along the line is stolen, the external vibration changes the transmission phase of the light wave in the sensing fiber, thereby causing the change of the interference characteristics of the optical fiber micro-vibration. The early warning terminal obtains the external vibration signal by detecting the interference signal, and then makes an alarm judgment through the analysis of the vibration signal waveform. At the same time, the vibration position can be obtained through the positioning algorithm, so as to realize the positioning of the alarm event and complete the early warning and anti-theft.

[0041] Through the design of the early warning and anti-theft method for cables along the expressway, the present invention improves the alarm rate of cable theft events, reduces the false alar...

Embodiment 2

[0058] A device that can be used as an early warning and anti-theft method for cables along expressways, which consists of a sensing optical cable terminal box 1, a sensing optical cable 2, a cable 3, a guiding optical cable 4, and a master controller 5 (IFP3800-MC, including a light source module, an optical path coupling module and photodetector module), guide optical cable 6, fiber optic signal analyzer 7 (FPT3800), main control computer 8 and other 8 parts. The connection relationship is: the sensing optical cable terminal box 1 is connected to the sensing optical cable 2, the cable 3, and the first guiding optical cable 4 respectively; the main controller 5 is connected to the sensing optical cable terminal box 1 through the first guiding optical cable 4; Part of the connection realizes the following functions: the light source module of the main controller 5 emits light waves, which are transmitted to the sensing optical cable terminal box 1 through the first guiding opti...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): G08B13/186
Inventor 胡彦杰邓敏张灿程周颖刘兵
Owner CCCC SECOND HIGHWAY CONSULTANTS CO LTD
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