Φ-OTDR型分布式光纤声波传感器研究进展  

Research Progress ofΦ-OTDR Distributed Optical Fiber Acoustic Sensor

作　　者：马皓钰 王夏霄[1,2] 马福 于佳 Ma Haoyu;Wang Xiaxiao;Ma Fu;Yu Jia(School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing 100191,China;Key Laboratory of Precision Opto-Mechatronics Technology,Ministry of Education,Beijing 100191,China)

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191 [2]精密光机电一体化技术教育部重点实验室,北京100191

出　　处：《激光与光电子学进展》2020年第13期58-72,共15页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2016YFF0102400);国家重大科学仪器设备开发专项(2013YQ040877)。

摘　　要：分布式光纤声波传感器是将光纤作为敏感传感元件和信号传输介质来获取动态应变信息的传感系统,它可以实现对动态应变的长距离、分布式、多点的实时定量检测,具有结构简单、传感距离长、检测精度高、环境适应性强等优点。基于相位敏感光时域反射计(Φ-OTDR)的分布式光纤声波传感系统一直也是近年来的研究热点,为此,从传感系统的探测结构与相位解调方式两个关键技术出发,重点介绍了Φ-OTDR型分布式光纤声波传感器的研究进展,并总结分析了几种方法的优缺点,对在实际应用中选择合适的检测系统具有重要的指导意义。The distributed optical fiber vibration sensing system is a sensing system that uses optical fibers as sensing sensitive components and signal transmission media to obtain strain information.It has the characteristics of long sensing distance,real-time measurement,reversible vibration signal,and strong environmental adaptability.Distributed optical fiber vibration sensing systems based on phase-sensitive optical time domain reflectometry have been a hot spot in recent years.This paper mainly introduces the research progress of distributed optical fiber vibration sensing system based on phase sensitive optical time domain reflectometer from different detection structures and demodulation methods,and concludes the advantages and disadvantages of these methods and structures.This is of great significance for selecting the appropriate detection system in practical applications.

关 键 词：激光光学 光纤传感 分布式声波传感器 相位敏感光时域反射计 探测结构 相位解调 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]