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Accurate positioning type fiber sensing early warning system

A fiber optic sensing and alarm system technology, applied in alarms, anti-theft alarms, instruments, etc., can solve the problems of inaccurate location of alarms, limited optical fiber signal transmission distance, high alarm sensitivity, etc., and achieves light weight and variable shape , small size effect

Active Publication Date: 2015-03-11
南京业祥科技发展有限公司
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AI Technical Summary

Problems solved by technology

Fiber Bragg grating technology, which uses chromatographic grating as the detection point, is a point-type perimeter intrusion alarm technology. Mach-Zehnder (M-Z) interferometer technology uses optical modules to form a defense zone, and uses single-shot and single-receive to complete the defense. Vibration alarm, single-send and single-receive alarm system has high alarm sensitivity, but the location of the alarm cannot be accurately located, and the distance of optical fiber signal transmission is limited, and the maximum range of protection can only be achieved within 32 kilometers

Method used

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  • Accurate positioning type fiber sensing early warning system
  • Accurate positioning type fiber sensing early warning system
  • Accurate positioning type fiber sensing early warning system

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Embodiment 1

[0029] This embodiment provides a precise positioning optical fiber sensor early warning system, its structure schematic diagram is as follows figure 1 As shown, it includes a processing computer 7 , an information collector 1 , a head light module group 2 and a tail light module group 3 .

[0030] Regarding the above modules, the components of the above modules are first introduced: the information collector 1 includes a forward laser detector 4 , a reverse laser detector 5 and a laser emitter 6 . The head light module group 2 includes a distribution light module A, a forward light module B and a reverse light module C. The tail light module group 3 includes a forward light module D.

[0031] The above-mentioned modules are connected through optical fibers. In order to facilitate the description of the link, each connecting optical fiber is labeled. The link connection relationship is: the laser transmitter 6 is connected to the distribution optical module A through the opti...

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Abstract

The invention relates to an accurate positioning type fiber sensing early warning system which comprises an information collector, a head light module group and a tail light module group, wherein the information collector consists of a forward laser detector, a backward laser detector and a laser emitter; the head light module group consists of a light distribution module, a forward light module and a backward light module, the tail light module group consists of a light transmission module, the laser emitter and the light distribution module are connected, the forward laser detector and the forward light module are connected, and the backward laser detector and the backward light module are connected; the light distribution module is connected with the forward light module and the backward light module; the forward light module and the light transmission module are connected, and the backward light module and the light transmission module are connected. The accurate positioning type fiber sensing early warning system is long in detection distance, capable of being accurately positioned, strong in anti-interference capability and adaptability, and low in cost.

Description

technical field [0001] The invention relates to an optical fiber induction alarm system, in particular to an accurate positioning type optical fiber induction early warning and alarm system. Background technique [0002] Optical fiber can not only be used for signal transmission, but also can be used as a sensor in security applications. While transmitting signals in optical links, only three core optical fibers are needed to realize optical fiber sensing detectors. When the on-site optical fiber sensor or its surrounding environment is disturbed or damaged, some characteristics of the optical signal transmitted in the light will change. The characteristics of the optical signal can be changed through the advanced intelligent sensing monitoring system. By detecting the characteristic change of the optical signal, the The measurement of many events and states can be monitored in real time. Through the special algorithm and analysis processing of the optical fiber sensor alarm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/186
CPCG08B13/186
Inventor 刘龙海陈施忠
Owner 南京业祥科技发展有限公司
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