A Perimeter Security Early Warning System Based on Fiber Bragg Grating Sensing

Abstract

The invention discloses a perimeter security early warning system based on fiber grating sensing, comprising: a fiber grating displacement sensor, a pulley, a protective steel cable, a transmission optical cable, a wavelength demodulation analyzer, a control host, a display screen, a pan-tilt camera, an acoustic Optical alarm and transmission cable; when working, the steel cable is protected from sensitive intrusion behavior, so that the sensing light signal of the optical fiber grating displacement sensor changes, and the displacement information obtained by the wavelength demodulation analyzer is transmitted to the control host, and the control host analyzes the displacement information; When the perimeter intrusion is found, the control host judges the intrusion location, the pan-tilt camera rotates to the intrusion location, and collects video images. At the same time, the sound and light alarm sends out sound and light alarms, stores video, displacement, and early warning information, and monitors them through the display screen. show. The invention has the advantages of anti-electromagnetic interference, low early warning false alarm rate, convenient deployment and maintenance, suitable for complex terrain layout, and can link video collection and sound and light alarm functions, and has very broad application prospects.

Description

technical field [0001] The invention relates to a perimeter security early warning system, in particular to a perimeter security early warning system based on fiber grating sensing. Background technique [0002] With the vigorous development of social economy, the country and society are paying more and more attention to the safety of people's lives, property and living environment; the frequent occurrence of terrorist attacks and public safety accidents has further prompted people's increasing demand for security early warning systems. The perimeter security early warning system is deployed in important areas or the perimeter of building facilities to provide early warning of intrusion into the defense zone, and has important applications in many military and civilian fields. Traditional perimeter security early warning systems mainly include video surveillance, infrared shooting, and electronic fences. The video surveillance system uses cameras to monitor the defense area...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a perimeter security early warning system based on fiber grating sensing, which solves the problems of poor anti-electromagnetic interference performance, high early warning false alarm rate, difficulty in deploying in complex terrain, and the need to consume a lot of human resources. question

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