A Perimeter Security Early Warning System Based on Fiber Bragg Grating Sensing
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A fiber grating and early warning system technology, which is applied in anti-theft alarms, anti-theft alarm mechanical start-ups, alarms that rely on broken/disturbed straightened ropes/metal wires, etc. Poor, difficult to deploy and other issues
Active Publication Date: 2021-05-07
BEIJING INST OF CONTROL & ELECTRONICS TECH
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[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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[0014] A perimeter security early warning system based on fiber grating sensing, including: fiber grating displacement sensor 1, pulley 2, protective steel cable 3, transmission optical cable 4, wavelength demodulation analyzer 5, control host 6, display screen 7, cloud Camera 8, sound and light alarm 9 and transmission cable 10.
[0015] The protective steel cable 3 is connected with the optical fiber grating displacement sensor 1 through the pulley 2, and is arranged on the perimeter of the defense area; the optical fiber grating displacement sensor 1 is connected with the wavelength demodulation analyzer 5 through the transmission optical cable 4; the control host 6 is connected with the wavelength demodulation analyzer 5, The display screen 7, the pan-tilt camera 8 and the sound and light alarm 9 are connected by a transmission cable 10; the optical fiber grating displacement sensor 1, the pulley 2 and the protective steel cable 3 are in multiple groups.
[0016] The prote...
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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...
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