Perimeter alarming method and system for implementing orientation of composite type complete optical fiber

An all-fiber, composite technology, which is applied in the field of perimeter alarm methods and systems that realize composite all-fiber positioning, can solve problems that easily cause false alarms and false alarms, and affect the accuracy of system alarms, so as to improve the anti-disturbance ability, improve alarm accuracy, and reduce the effects of false alarms and false alarms

Inactive Publication Date: 2008-11-12
BEIHANG UNIV
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  • Claims
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Problems solved by technology

It can be seen from the above technical solutions of the prior art that since the precisely positioned micro-vibration sensor laid on the BE section of the sensing fiber is made using the principle of Mach-Zehnder interferometer, its induction signal Easily affected by external environmental factors such as temperature and stress, it is easy to cause false alarms and false alarms, which affects the alarm accuracy of the system

Method used

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  • Perimeter alarming method and system for implementing orientation of composite type complete optical fiber
  • Perimeter alarming method and system for implementing orientation of composite type complete optical fiber
  • Perimeter alarming method and system for implementing orientation of composite type complete optical fiber

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Embodiment Construction

[0031] The embodiment of the present invention provides a perimeter alarm method and system that realizes composite all-fiber positioning. Firstly, according to the actual needs of users and usage conditions, a monitoring optical cable that has been equipped with an accurate positioning sensor is installed at the same time. Multiple auxiliary optical fiber micro-vibration sensors; then use the set precise positioning sensor and auxiliary optical fiber micro-vibration sensors to jointly judge whether there is a disturbance signal on the monitoring optical cable, improve the anti-disturbance ability of the system, and reduce the external environment such as temperature and stress Factors can effectively reduce false alarms and false alarms, and improve the alarm accuracy of the monitoring system.

[0032] In order to better describe the embodiments of the present invention, the specific embodiments of the present invention are now described in conjunction with the accompanying dr...

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Abstract

The embodiment of the invention provides a method and a system for realizing composite entire optical fiber localizable perimeter alarm. An auxiliary optical fiber micro vibration sensor is arranged on a monitor optical cable provided with a precise positioning sensor; whether a disturbance signal exists is judged by the precise positioning sensor and the auxiliary optical fiber micro vibration sensor together, namely, whether people invade is judged; if the judgment is confirmed, an alarming signal is sent out, thus effectively improving the anti-interference capacity of the system, lowering effect caused by outside environmental factors like temperature and stress, and the like, reducing false alert rate and missing report rate, and improving the alarming precision of the monitoring system.

Description

technical field [0001] The invention relates to the field of alarm systems, in particular to a perimeter alarm method and system for realizing composite full optical fiber positioning. Background technique [0002] At present, the security systems applied to perimeter alarm mainly include: microwave alarm system, active infrared alarm system, leaking cable perimeter alarm system, static induction perimeter alarm system and camera video recognition system, etc. However, when the above-mentioned traditional perimeter alarm system is applied to monitoring under long-distance conditions such as borders or oil pipelines, there will be many problems. For example, monitoring methods such as microwave alarm system or active infrared alarm system can only be used in line-of-sight and flat areas, and are greatly affected by environmental factors such as terrain heights, twists and turns, turns, and bends. Influenced by climate, the accuracy rate is also lower. At the same time, sinc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/186G01H9/00G01D5/353
Inventor 李立京李琛罗光明林文台杨德伟邵洪峰李晨光王聚良
Owner BEIHANG UNIV
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