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Perimeter security sensor realized based on combination of optical fiber technology and metal net

A metal mesh and sensor technology, applied in the direction of alarms, instruments, alarms, etc. that rely on broken/disturbed straightened ropes/metal wires, can solve the problems of civil construction costs, labor costs, and engineering costs. Achieve the effect of solving the long debugging cycle, reducing construction costs, and solving the problem of false alarms

Pending Publication Date: 2022-04-26
上海微波技术研究所(中国电子科技集团公司第五十研究所)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The civil construction costs involved are getting higher and higher with the current increase in labor costs, accounting for the majority of project costs

Method used

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  • Perimeter security sensor realized based on combination of optical fiber technology and metal net
  • Perimeter security sensor realized based on combination of optical fiber technology and metal net
  • Perimeter security sensor realized based on combination of optical fiber technology and metal net

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A perimeter security sensor based on optical fiber technology combined with metal mesh, such as Figure 1-3 As shown, it includes a vibrating optical cable 1 , an optical cable fastening device 2 , an optical cable restraining device 3 and a metal mesh 4 . The vibrating optical cable 1 is connected to the metal mesh 4 through the optical cable fastening device 2 , and the optical cable restraining devices 3 are evenly distributed on the vibrating optical cable 1 . Preferably, the optical cable fastening device 2 and the optical cable restraint device 3 are distributed on the vibrating optical cable 1 at intervals. Two vibrating optical cables 1 are respectively connected to both sides of the metal mesh 4 in parallel. Preferably, both the optical cable fastening device 2 and the optical cable restraint device 3 are made of antirust metal materials. The metal mesh 4 is connected to the perimeter solid wall or the perimeter ground through the metal mesh fixing device 5 ....

Embodiment 2

[0035] Present embodiment 2 is completed on the basis of embodiment 1, vibrating optical cable 1 is connected on fence and metal mesh 4 respectively, as Figure 4 As shown, specifically:

[0036] The vibrating optical cable 1 is fixed on the fence and the metal net 4 by the optical cable fastening device 2 respectively, and meanwhile, the optical cable restraint device 3 connected on the vibrating optical cable 1 limits the relative position of the vibrating optical cable 1 on the fence and the metal net 4.

[0037] The metal mesh 4 is directly fixed on the grass in the enclosure by U-shaped ground nails, covered by the grass, and cannot be found by the naked eye. Once someone steps into the grass, the vibrating optical cable on the paving network will be triggered, and the system will send out an alarm signal that the target is approaching the fence. Together with the vibrating optical cable on the fence, it constitutes a high-level perimeter security alarm system. Boundary ...

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Abstract

The invention provides a perimeter security sensor realized by combining a metal net based on an optical fiber technology. The perimeter security sensor comprises a vibration optical cable, an optical cable fastening device, an optical cable restraining device and the metal net, the vibration optical cable is connected to the metal net through an optical cable fastening device, and optical cable restraining devices are uniformly distributed on the vibration optical cable; when the metal net is vibrated, the relative position of the vibration optical cable on the metal net is limited through the optical cable restraining device, and the vibration optical cable transmits a peripheral vibration signal to the vibration signal processing host to generate a peripheral alarm signal. The detection range and the detection sensitivity of the vibration optical cable are increased, the consistency of detection signals is improved, the problem of long debugging period is solved, the problem of false alarm caused by the fact that a traditional sensing optical cable is easily influenced by wind is solved, the construction cost is effectively reduced, and the original landscape is not influenced.

Description

technical field [0001] The invention relates to the field of vibrating optical fiber perimeter security detection, in particular to a perimeter security sensor based on OTDR optical fiber technology combined with metal mesh. Background technique [0002] This patent discloses a perimeter security sensor based on OTDR optical fiber technology combined with metal mesh. It has been proved by theory and practice that it has the following characteristics compared with traditional perimeter security sensors based on vibrating optical fiber technology: currently the optical fiber sensor is used in perimeter The basic working principle of the security industry in the world: OTDR optical fiber technology uses the backscattering generated by Rayleigh scattering and Fresnel reflection when the light is transmitted in the optical fiber. At the same time, these signals reflect the vibration, For physical events such as bending and deformation, these reflection signals are collected at th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/12G08B29/18
CPCG08B13/124G08B29/185
Inventor 徐琪彭肃家林一超李双崔佳鹏桂小刚姜大闯陈钱侯泽宇周航
Owner 上海微波技术研究所(中国电子科技集团公司第五十研究所)