一种基于柔性铰链的FBG加速度传感器  

An FBG acceleration sensor based on flexure hinge

作　　者：梁磊[1] 李东旭[1] 仇磊[1] 徐刚[1,2] 

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]湖北工程学院机械工程系,湖北孝感432000

出　　处：《光电子．激光》2016年第4期347-352,共6页Journal of Optoelectronics·Laser

基　　金：国家"863"项目<采煤机工作可靠性智能监测技术>(2013AA06A411)资助项目

摘　　要：为了适应光纤传感器在采煤机中的应用,提出了一种基于柔性铰链的光纤布拉格光栅(FBG)加速度传感器,其质量块通过柔性铰链和基座连接。基于传感器的结构模型,从理论给出了传感器的灵敏度和谐振频率公式,并讨论了结构参数对传感器灵敏度和谐振频率的影响,还利用有限元法分析了传感器的静态和动态特性。实验表明,本文传感器的谐振频率为2kHz,峰-峰值灵敏度为22pm/g,横向抗干扰度小于10%,适用于1kHz以下加速度的测量。For the application of optical sensor in shearer,this paper presents a fiber Bragg grating（FBG）acceleration sensor based on a mass block connected with a base by a flexible hinge.According to the structure model of the acceleration sensor,we give the formula a about the sensitivity and resonance frequency of the sensor and discuss the effects of the structural parameters on the sensitivity and resonance frequency.Also finite element method is used to analyze the static and dynamic characteristics of the sensor.A series of optical fiber sensing experimental results show that the resonant frequency of our prepared sensor is 2kHz,the sensitivity is 22pm/g,the transverse interference is less than 10%,so the sensor is suitable for the measurement with acceleration frequency under 1kHz.

关 键 词：柔性铰链 加速度传感器 光纤布拉格光栅(FBG) 数值计算方法 有限元法 

分 类 号：TN253[电子电信—物理电子学]