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A method and device for early warning and anti-theft of cables along expressways

A technology along highways and along the road, which is applied in the field of traffic information engineering, can solve problems that cannot be prevented before they happen, and achieve the effects of improving event positioning accuracy, long transmission distance, and improving safety levels

Active Publication Date: 2016-09-21
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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  • A method and device for early warning and anti-theft of cables along expressways

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Experimental program
Comparison scheme
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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Abstract

The invention discloses a method and device for early warning and anti-theft of cables along the expressway. The steps are: 1) adopting a sensing optical cable and laying the cables along the expressway at the same time; 2) using a guiding optical cable to connect the terminal box of the sensing optical cable to a main controller; 3) Use the internal light source module, optical path coupling module and optical detector module of the main controller to extract the vibration waveform of the cable laying area along the expressway; 4) Analyze the waveform characteristics of the optical fiber vibration signal under two types of events; 5) Use the main control computer to extract the main control computer. 6) Vibration events are alarmed and recorded in the waveform characteristic database. The sensing optical cable terminal box is connected to the sensing optical cable, cable, and guiding optical cable respectively, the main controller is connected to the guiding optical cable, the main controlling instrument is connected to the optical fiber signal analyzer through the guiding optical cable, and the optical fiber signal analyzer is connected to the main control computer. The alarm rate is improved, the missed alarm rate is reduced, the false alarm rate is reduced, the positioning accuracy 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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Patent Type & Authority Patents(China)
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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