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Distributed optical fiber sensor based expressway protective fence damage positioning system and method thereof

A distributed optical fiber and expressway technology, applied in the optical field, can solve the problems of lack of anti-harsh environment, all-day and real-time performance of the whole road section, and achieve the effects of avoiding further expansion of disasters, strong environmental adaptability, and reducing accident rate

Pending Publication Date: 2018-11-06
ANSHAN REALPHOTONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, for the destruction of the protective fence caused by highway traffic accidents and natural disasters, there are mainly two means of accident personnel alarm and camera monitoring alarm, so as to know the location information of traffic accidents. However, these two alarm methods are alarmed after human discovery. Lack of anti-harsh environment, full road, all-weather and real-time performance

Method used

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  • Distributed optical fiber sensor based expressway protective fence damage positioning system and method thereof
  • Distributed optical fiber sensor based expressway protective fence damage positioning system and method thereof
  • Distributed optical fiber sensor based expressway protective fence damage positioning system and method thereof

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specific Embodiment approach 1

[0027] A damage location system for highway guardrails based on distributed optical fiber sensors, such as figure 1 As shown, it includes a highway detection station module 1, a highway detection module 2 and a highway communication module 3; the highway detection station module 1 includes a distributed Brillouin temperature strain analyzer 11, that is, a BOTDA device and a channel expansion module 12 There are several expressway detection station modules 1, and the expressway detection module 2 includes a strained optical cable 21 and a guardrail 22; the expressway communication module 3 includes a network unit 31, an expressway data center 32, and a service terminal 33 The guardrail 22 is arranged on the expressway, and the strained optical cable 21 is fixedly installed on the guardrail 22 in an S-shaped layout, and the top of the strained optical cable 21 is connected to the port of the channel expansion module 12 through a head-to-tail optical fiber joint. The port of the ...

specific Embodiment approach 2

[0030] Specifically, the guardrails 22 are arranged on both sides of the uplink and downlink of the expressway, and the strained optical cables 21 are respectively arranged on the guardrails 22 on both sides of the uplink of the expressway. The road prompting board welds the straining optical cable 21 into an uplink optical cable loop, respectively sets the straining optical cable 21 on the guardrails 22 on both sides of the downlink of the expressway, and at the end of the downlink road, the straining optical cable 21 is passed through the horizontal road prompting board above the road. Spliced ​​to form a downlink optical cable loop.

specific Embodiment approach 3

[0031] Specifically, the upstream optical cable loop is connected to port 3 and port 4 of the channel expansion module 12 through a head-to-tail optical fiber connector, and the downstream optical cable loop is connected to port 3 and port 4 of the channel expansion module 12 through a head-to-tail optical fiber connector; The access sequence of the uplink optical cable loop and the downlink optical cable loop access channel expansion module 12 can be different, and the 1 port and the 2 port of the channel expansion module 12 are connected to the two optical interfaces on the front panel of the BOTDA equipment through two optical fiber jumpers. The channel switching of the channel expansion module 12 is performed through the BOTDA device, and the channel expansion module 12 can adopt 8 channels or 16 channels.

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Abstract

The invention discloses a distributed optical fiber sensor based expressway protective fence damage positioning system and a method thereof, and belongs to the optical field. The distributed optical fiber sensor based expressway protective fence damage positioning system includes: expressway detection station modules, wherein each expressway detection station module includes a distributed Brillouin temperature strain analyzer and a channel expansion module; an expressway detection module including strain cables and protective fences; and an expressway communication module including a network unit, an expressway data center, and a service terminal. The strain cables are fixedly mounted on the protective fences in a S-shaped arrangement manner; top ends of the strain cables are connected toports of the channel expansion modules through end-to end optical fiber splices; ports of the channel expansion modules are connected to optical interfaces of the distributed Brillouin temperature strain analyzers through optical fiber patch cords; the distributed Brillouin temperature strain analyzers are connected to an expressway data center through the network unit; and the expressway data center is connected to the service terminal. The distributed optical fiber sensor based expressway protective fence damage positioning system effectively achieves the natural disaster early warning and special traffic safety accident alarm along the expressway.

Description

technical field [0001] The invention belongs to the field of optics, and in particular relates to a system and a method for locating damaged highway guardrails based on distributed optical fiber sensors. Background technique [0002] By the end of 2018, the total mileage of my country's expressways will reach 136,000 kilometers, which is the main artery supporting the faster and better development of my country's economy. my country's expressways are distributed in a wide area, long distances, complex geological conditions, and serious natural disasters. At the same time, expressways are characterized by day and night operation, closed type, and only cars are allowed. Due to the characteristics of long distance, wide distribution area, day and night operation, and closed type, when natural disasters such as landslides and geological subsidence occur along the expressway, road traffic failure warnings cannot be issued in time, which is likely to cause serious traffic safety a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/12G08B25/01H04B10/275H04B10/50H04B10/516
Inventor 董永康姜桃飞刘昌霞张洪玲
Owner ANSHAN REALPHOTONICS TECH CO LTD
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