基于端面反射的高频光纤振动传感系统研究  

The High Frequency Vibration Detection System Based on Facet Reflection by Using Optical Fiber Sensing

作　　者：祁耀斌[1] 刘路杰 高雪清[1] 王汉熙[3] QI Yao-Bin;LIU Lu-Jie;GAO Xue-Qing;WANG Han-Xi(National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China;School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China;Digital Manufacture Key Laboratory of Hubei Province, Wuhan University of Technology, Wuhan 430070, China)

机构地区：[1]武汉理工大学光纤传感技术国家工程实验室,湖北武汉430070 [2]武汉理工大学信息工程学院,湖北武汉430070 [3]武汉理工大学数字制造湖北省重点实验室,湖北武汉430070

出　　处：《中国海洋大学学报（自然科学版）》2020年第11期112-118,共7页Periodical of Ocean University of China

基　　金：国家科技支撑计划项目(2014BAG07B00)资助。

摘　　要：光学测量方法是高频振动检测领域新的研究方向。该论文研发了由光纤振动检测传感器、光纤振动信号检测单元等系统组成的一个振动检测系统,使用端面反射的基本原理。振动信号经过光纤振动传感器转化为光信号,再经过检测单元转化为电信号,最终得到测量频率。实验测得该系统的频率响应范围是2~33 kHz,测量误差小于0.21%。该系统的光纤振动传感器是强度调制型光纤传感器,避免了波长解调,相对于其他光学测量系统具有测量带宽广、测量频率高、振动传感器设计简洁等优点。The optical measurement technique became the new development direction in the field of high frequency vibration measurement.In this paper,a high frequency vibration detection system of optical fiber sensing has been designed the detection system is composed of the optical fiber vibration sensor and the detection unit of optical fiber vibration signal,based on facet reflection principle.The vibration signal is converted into light signal through the optical fiber vibration sensor,and then converted into electrical signal by the detection unit.In this way,the vibration signal is detected.The sensor is reflective intensity modulation fiber-optic sensor,which avoids demodulating the reflecting wavelength Comparing to other FBG sensors,the sensor structure is simple.In the experiment,the measurement range is from 2 kHz to 33 kHz,and the frequency measurement error is below 0.2%.Comparing with other optical methods of vibration measurement,the detection system has a wider bandwidth,higher responsefrequency and simple design of the sensor.

关 键 词：高频振动 系统检测 强度调制 光纤传感器 端面反射 

分 类 号：P732[天文地球—海洋科学]