Analysis on Signal Sensing Principle of Optical Fiber Device in Airport Perimeter Security System

摘要

Security technology is mainly to build security prevention system as the main goal of the technology, security prevention system for the purpose of maintaining public security, the use of security products and other related products composed of intrusion alarm system, video security monitoring system, entrance and exit control system, explosion-proof security inspection system, or by these systems for subsystem integration of electronic systems or networks. There are many kinds of perimeter security alarm systems, their performance and characteristics are different. Optical fiber perimeter security technology can be used as both signal acquisition unit and signal transmission unit as a natural advantage, compared with other monitoring technology is more suitable for long distance monitoring. In this paper, the theory of fiber optic sensor based on fiber Bragg grating is analyzed, and the signal sensing mode of fiber Bragg grating sensor is obtained.