扭转梁式双光纤Bragg光栅加速度传感器的设计与有限元分析

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英文篇名：The Design and Finite Element Analysis of Torsion Beam Dual FBG Acceleration Sensor 作者：王海林 ; 刘爱莲 ; 姚敏 ; 赵振刚 ; 杨秀梅 ; 李川 英文作者：WANG Hai-lin;LIU Ai-lian;YAO Min;ZHAO Zhen-gang;YANG Xiu-mei;LI Chuan;Faculty of Information Engineering and Automation, Kunming University of Science and Technology; 关键词：加速度传感器 ; 加速度信号检测 ; 高频率 ; 光纤Bragg光栅 ; 波分复用技术 ; 分布式测量 ; 扭转梁 ; 灵敏度 英文关键词：acceleration sensor;;acceleration signal detection;;high frequency;;fiber Bragg grating;;wavelength-division multiplexing technology;;distributed measurement;;torsion beam;;sensitivity 中文刊名：化工自动化及仪表 英文刊名：Control and Instruments in Chemical Industry 机构：昆明理工大学信息工程与自动化学院; 出版日期：2019-05-10 出版单位：化工自动化及仪表 年：2019 期：05 语种：中文; 页：61-65+77 页数：6 CN：62-1037/TQ ISSN：1000-3932 分类号：TP212

摘要

设计一种新型扭转梁式双光纤Bragg光栅加速度传感器,该传感器由扭转梁、扭转圆盘、质量块和光纤Bragg光栅组成,质量块受力带动扭转梁发生扭转变形,扭转圆盘将扭转梁的扭转变形放大到光纤光栅,通过检测光纤Bragg光栅中心波长的变化量即可检测出被测加速度信号。对已知传感器模型进行有限元分析,根据分析结果进行优化设计,确定最优方案。仿真结果显示:该传感器的固有频率为872.99Hz,灵敏度为16.118pm/(m/s~2)。该传感器克服了传统梁式光纤光栅传感器固有频率与灵敏度相互矛盾的现象,即在一定固有频率的基础上,可以通过增大扭转圆盘半径来放大传感器的灵敏度,因此该传感器可以实现对较高频率加速度信号的检测。
        A new torsion beam dual-fiber Bragg grating acceleration sensor was designed and the torsion beam, torsion disk, mass block and fiber Bragg grating constitute it, in which, the mass block forced drives the torsion beam and results in a torsional deformation and the twisted disk maps the torsion deformation to the fiber grating. Through measuring the center wavelength variation of the fiber Bragg grating, the acceleration signal can be detected, including having the known sensor model analyzed with finite element method so as to determine an optimal scheme according to the analysis result. The simulation results show that, this sensor has a natural frequency of 872.99 Hz and the sensitivity of 16.118 pm/(m/s~2)and it overcomes the contradiction between the natural frequency and the sensitivity of the traditional beam fiber grating sensor,that is,on the basis of a certain natural frequency,the sensitivity of the sensor can be amplified by increasing the radius of the torsion disk so as to achieve high frequency of the acceleration signal detection.

引文

[1] 翁银燕.光纤布拉格光栅振动加速度传感器的结构设计及实验研究[D].西安:西北大学,2012.
    [2] Maaskant R,Alavie T,Measures R M,et al.Fiber-optical Bragg Grating Sensors for Bridge Monitoring[J].Cement and Concrete Composites,1997,19(1):21～33.
    [3] Morey W W,Meltz G,Glenn W H.Fiber Optic Bragg Grating Sensors[J].Proc Spie,1990,1169(96):98～107.
    [4] 姚开方.高频响应光纤布喇格光栅加速度传感器的研究[D].武汉:武汉理工大学,2009.
    [5] 罗裴,田建伟,王立新.双光纤光栅高频加速度传感器的研究[J].光电工程,2012,39(6):53～56.
    [6] 李国利,刘祥建.双简支梁结构光纤光栅加速度传感探头的设计[J].压电与声光,2014,36(1):32～34.
    [7] 王宏亮,周浩强,高宏,等.基于双等强度悬臂梁的光纤光栅加速度振动传感器[J].光电子·激光,2013,24(4):635～641.
    [8] Basumallick N,Chatterjee I,Biswas P,et al.Fiber Bragg Grating Accelerometer with Enhanced Sensitivity[J].Sensors and Actuators A:Physical,2012,137(11):108～115.
    [9] 张毅翔,王宇,薛景锋.扭转式光纤光栅加速度计的研究[J].计测技术,2013,33(z1):20～22.
    [10] Li T,Tan Y,Zhou Z,et al.Pasted Type Distributed Two-dimensional Fiber Bragg Grating Vibration Sensor[J].Review of Scientific Instruments,2015,86(7):075009.