基于OTDR的分布式光纤微弯传感系统设计  

Design of distributed optical fiber micro-bend sensing system based on OTDR

作　　者：龚冬梅[1] 孙小芳[1] 何惠如 王燕琼[1] Gong Dongmei;Sun Xiaofang;He Huiru;Wang Yanqiong(College of Information Science and Engineering,Huaqiao University,Xiamen 361021,China)

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《实验技术与管理》2018年第10期80-83,共4页Experimental Technology and Management

基　　金：福建省科技计划重点项目(2016H6016);华侨大学2016年实验教学改革与建设课题(66661612)

摘　　要：针对面向工程应用的实验需要,开发了分布式光纤微弯传感实验系统。阐述了实验系统的总体结构设计方案,以及光纤微弯传感器的基本原理和关键技术,搭建了混凝土路面塌陷监测、崩塌滑坡岩土灾害监测2个工程应用项目。系统可实现基于光时域反射仪(OTDR)的光纤微弯传感器衰减检测和分布检测,能监测模拟混凝土路面和模拟岩土山坡在压力下的空洞塌陷和滑坡现象。该系统可作为岩土结构体监测研究和教学实验的实验平台。In view of the experimental requirements for engineering application,a distributed optical fiber micro-bend sensing experimental system has been developed.The design scheme of the overall structure of the experimental system and the basic principle and key technology of the fiber optic micro-bending sensor are expounded upon,and two engineering application projects of the concrete pavement subsidence monitoring and landslide geotechnical disaster monitoring are set up.This system can realize the attenuation detection and distribution detection based on the fiber micro-bending sensor of the optical time domain reflectometer(OTDR),and the cave collapse and landslide phenomena of the simulated concrete pavement and simulated rock-soil slope under pressure are monitored experimentally.This system can be used as an experimental platform for the monitoring research and teaching experiment of geotechnical structures.

关 键 词：分布式光纤传感 光时域反射仪 光纤微弯传感器 工程应用 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]