Design of FBG acceleration sensor based on two-dot coating

LIU Qin-peng; QIAO Xue-guang; FU Hai-wei; GAO Hong

doi:10.3788/OPE.20122009.2110

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Design of FBG acceleration sensor based on two-dot coating

Article | 更新时间：2020-08-12

- Design of FBG acceleration sensor based on two-dot coating
- Optics and Precision Engineering Vol. 20, Issue 9, Pages: 2110-2115(2012)
- 作者机构：
  
  1. 西北大学,陕西西安,710069
  2. 西北工业大学陕西省光信息技术重点实验室,陕西西安,710072
  3. 西安石油大学,陕西西安,710065
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122009.2110
  CLC： TN253;TP212
- Received：01 April 2012，
  
  Revised：14 May 2012，
  
  Published：10 September 2012
- 稿件说明：
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刘钦朋, 乔学光, 傅海威, 高宏. 两点封装的光纤布拉格加速度传感器设计[J]. 光学精密工程, 2012,20(9): 2110-2115

LIU Qin-peng, QIAO Xue-guang, FU Hai-wei, GAO Hong. Design of FBG acceleration sensor based on two-dot coating[J]. Editorial Office of Optics and Precision Engineering, 2012,20(9): 2110-2115
刘钦朋, 乔学光, 傅海威, 高宏. 两点封装的光纤布拉格加速度传感器设计[J]. 光学精密工程, 2012,20(9): 2110-2115 DOI： 10.3788/OPE.20122009.2110.

LIU Qin-peng, QIAO Xue-guang, FU Hai-wei, GAO Hong. Design of FBG acceleration sensor based on two-dot coating[J]. Editorial Office of Optics and Precision Engineering, 2012,20(9): 2110-2115 DOI： 10.3788/OPE.20122009.2110.

摘要

提出了一种双半孔梁光纤布拉格光栅(FBG)加速度传感器实现加速度信号测量的方法。首先

建立了两点封装FBG的加速度传感模型

理论分析了加速度与位移敏感点的线性响应。其次

从理论上分析了两点封装方案中FBG的自振特性

讨论了封装光纤的长度和预应力对光纤自振频率的影响。最后

依据FBG的自振特性设计了FBG加速度传感器

并通过实验研究了FBG加速度传感器的线性响应和幅频响应特性。实验结果表明:提出的传感器在10~250 Hz具有较好的平坦区

加速度响应灵敏度为41.2 pm/G;加速度与波长具有较好的线性关系

线性度为99.8%。同时

该加速度传感器具有较强的方向抗干扰性

轴向交叉灵敏度小于4.8%。

Abstract

A Double-semicircle Cantilever Beam(DSCB) accelerometer based on a fiber Bragg grating (FBG) was proposed to measure the acceleration signals. Firstly

the model of FBG accelerometer based on the two-dot coating was established

and the linear response between acceleration and displacements of sensitive elements was analyzed theoretically. Then

the natural vibration of the FBG based two-dot coating was described

and the effects of the length and prestress of the coated fiber on natural vibration frequency were discussed. Finally

according to the natural vibration of FBG

the FBG accelerometer was designed

and the linear response

amplitude-frequency characteristics

and direction anti-interference of the FBG accelerometer were researched experimentally. Experimental results indicate that the sensor has good flat response from 10-250 Hz

and the sensitivity of the accelerometer is 41.2 pm/G. Furthermore

the sensor can offer a good linear response in a linear fitting of 99.8% and a good cross-axis anti-interference ability in the cross-axis sensitivity less than 4.8%.

关键词

Keywords

references

MITA A, YOKOI I. Fiber Bragg grating accelerometer for structural health monitoring. Fifth International Conference on Motion and Vibration Control (MOVIC 2000), Sydney, 2000.[2] TODD M D, JOHNSON G A, ALTHOUSE B A, et al.. Flexural beam-Based fiber Bragg grating accelerometer[J]. IEEE Photo. Technol. Lett, 1998, 10(11):1605-1607.[3] ZHANG J H, QIAO X G, HU M L, et al.. Flextensional fiber Bragg grating-based accelerometer for low frequency vibration measurement [J]. Chinese Optics Letters, 2011,9(9): 090607.[4] BERKOFF T A, KERSEY A D. Experimental demonstration of a Fiber Bragg grating accelerometer [J]. IEE Photo. Technol. Lett, 1996, 8(12):1677-1679.[5] 李学成, 刘肃, 张文涛, 等. 双膜片结构光纤光栅地震检波器低频特性的研究[J]. 光电子激光,2010,21(4):529-532. LI X CH, LIU S, ZHANG W T, et al.. Study on low frequency characteristic of double diaphragm fiber Bragg grating geophone [J]. Journal of Optoelectronics Laser, 2010, 21(4):529-532. (in Chinese)[6] 沈洋,孙利民. 高灵敏度温度自补偿型光纤光栅加速度传感器设计[J]. 结构工程师,2009,25(2):141-146. SHEN Y, SUN L M. Design of FBG-based accelerometer with high sensitivity and temperature self-compensation [J].Structural Engineers, 2009, 25(2):141-146. (in Chinese)[7] 刘波,牛文成,杨亦飞,等. 新型光纤光栅加速度传感器的设计与实现[J]. 仪器仪表学报,2006,27(1):42-44. LIU B, NIU W CH,YANG Y F, et al.. A Novel fiber Bragg grating accelerometer [J]. Chinese Journal of scientific Instrument, 2006, 27(1):42-44. (in Chinese)[8] 李国利,赵彦涛,李志全. 基于双光纤光栅的加速度传感探头结构的设计[J] 压电与声光, 2006,28(4):387-389. LI G L, ZHAO Y T, LI ZH Q. Design of acceleration sensing probe structure based on dual fiber Bragg grating [J]. Piezolectectrics & Acoustooptics, 2006, 27(6): 299-301. (in Chinese)[9] 赵彦涛,李志全. 基于Bragg光纤光栅的三维加速度传感器的研究[J]. 仪器仪表学报,2006,27(6):299-301. ZHAO Y T, LI ZH Q. Study on triaxial accelerometer based on FBG [J]. Chinese Journal of Scientific Instrument, 2006, 27(6): 299-301. (in Chinese)[10] WENG Y Y, QIAO X G, FENG ZH Y, et al.. Compact FBG diaphragm accelerometer based on L-shaped rigid cantilever beam [J]. 2011,9(10): 100604.[11] MULLER M S, BUCK T C, KOCH A W. Fiber bragg grating-based acceleration sensor. Optomechatronic Technologies, International Symposium,2009:127-123.[12] OUSAMA M A, MUSTAFA A A, KARTHIK N. Novel three-axes fiber Bragg grating accelerometer[J]. SPIE, 2009: 58770Z.[13] 王焕定,章梓茂,景瑞. 结构力学 [M],北京:高等教育出版社,2009. WANG H D, ZHANG X M, JING R. Structural mechanics[M], Beijing: Higher Education Press, 2009. (in Chinese)

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