光栅阵列测振系统研究  

Research on Grating Array Vibration Sensing System

作　　者：于清澄 YU Qingcheng(China Liaoning Petroleum Engineering Company.Ltd,Panjin Liaoning 124000,China)

机构地区：[1]中油辽河工程有限公司,辽宁盘锦124000

出　　处：《传感技术学报》2020年第5期769-773,共5页Chinese Journal of Sensors and Actuators

摘　　要：针对传统光纤振动传感器信噪比低、噪音大、灵敏度低或者监测距离短等问题,设计了一种光栅阵列振动传感系统。系统以一系列弱反射光栅传感器为敏感单元,利用波分复用技术对光栅传感器进行传感网络的组建,利用双脉冲调制的方法,还原了振动信号。在工程应用中,该系统能对入侵行为进行实时监控,并能快速、有效地确定入侵信号,具有较高的灵敏度,并在一定程度上排除了环境干扰。有利于在大区域,长距离的监控领域获得应用。In order to solve the problems of low signal-to-noise ratio,high noise,low sensitivity,or short monitoring distance of traditional fiber optic vibration sensors,a grating array vibration sensing system was designed.A series of weak reflection grating sensors as the sensitive unit of the system,and used wavelength division multiplexing technology to construct the sensor network.The system demodulated the vibration signal with the double pulse modulation method.In engineering applications,the system can monitor intrusion behavior in real time,and quickly、effectively determine intrusion signals.It has high sensitivity and excludes environmental interference to a certain extent,suitable for the areas and long-distance monitoring application.

关 键 词：振动 光栅阵列 双脉冲调制 高灵敏度 长距离监测 周界安防 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]