Perimeter security early warning system based on fiber grating sensing

Abstract

The invention discloses a perimeter security early warning system based on fiber grating sensing. The system comprises fiber grating displacement sensors, pulleys, protective steel cables, an opticaltransmission cable, a wavelength demodulation analyzer, a control host, a display screen, a holder camera, an acoustic-optical alarm device, and transmission cables. When the system works, the protective steel cables are sensitive to any intrusion behavior, sensing optical signals from the fiber grating displacement sensors change, displacement information is obtained by the wavelength demodulation analyzer and the obtained information is transmitted to the control host, and the control host analyzes the displacement information; when a perimeter intrusion is discovered, the control host determines the intrusion position, the holder camera rotates to the intrusion position to carry out video and image collection, the acoustic-optical alarm device carries out sound and light alarming, video, displacement and early-warning information is stored, and the stored information is displayed by the display screen. According to the invention, the perimeter security early warning system having advantages of good anti-electromagnetic interference performance, low early warning false reporting rate, and great convenience in layout and maintenance is suitable for the complex terrain layout; linkage of the video acquisition and acoustic-optical alarming functions is realized; and the system has the 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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