Study of testing micro-deflection based on fiber Bragg grating sensing technology

ZHAI Yu-feng; YU Qing-hua; LIU Yan; ZHU Ling; ZHANG Long

doi:10.13873/j.1000-97872007.09.032

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Study of testing micro-deflection based on fiber Bragg grating sensing technology

更新时间：2025-09-11

- Study of testing micro-deflection based on fiber Bragg grating sensing technology
- Issue 9, Pages: 59-60+66(2007)
- 作者机构：
  
  1. 中国科学院安徽光学精密机械研究所
  2. 中国科学院安徽光学精密机械研究所,安徽,合肥,230031
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872007.09.032
  CLC： TP212.14
- Published：2007
- 稿件说明：
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[1]翟玉锋,于清华,刘艳,朱灵,张龙.光纤光栅测量微挠度的研究[J].传感器与微系统,2007(09):59-60+66.

ZHAI Yu-feng, YU Qing-hua, LIU Yan, et al. Study of testing micro-deflection based on fiber Bragg grating sensing technology[J]. 2007, (9): 59-60+66.
[1]翟玉锋,于清华,刘艳,朱灵,张龙.光纤光栅测量微挠度的研究[J].传感器与微系统,2007(09):59-60+66. DOI： 10.13873/j.1000-97872007.09.032.

ZHAI Yu-feng, YU Qing-hua, LIU Yan, et al. Study of testing micro-deflection based on fiber Bragg grating sensing technology[J]. 2007, (9): 59-60+66. DOI： 10.13873/j.1000-97872007.09.032.

摘要

提出一种基于光纤光栅传感技术的微挠度测量系统。将B ragg光纤光栅粘贴于悬臂梁的自由端

当悬臂梁自由端受力发生微挠度弯曲时

光纤光栅将沿轴向发生形变

通过监测B ragg光纤光栅（FBG）传感器反射波长漂移可以测量出悬臂梁的微挠度变化。通过对系统结构理论分析和实验验证

该装置挠度测量范围为0

1μm

测量灵敏度达到0.05μm

线性拟合度达到0.999 7

非线性误差小于0.1%。

Abstract

A novel micro-deflection testing system based on fiber Bragg grating（FBG）sensing technology is demmonstrated.A FBG is adhered on the free end of the standard cantilever beam with special gelatin.When the loads are applied to the end of the cantilever beam

the FBG will cause deformation along the fiber longitudinal direction.According to monitoring the wavelength shift of the FBG

the variation of the micro-flexivity of cantilever beam can be obtained.The experiment results demonstrate that the testing range of this system can reach 0～51 μm

the sensitivity of this system is about 0.05 μm

and the related linear regression coefficient is 0.999 7

The nonlinearity error is less than 0.1 %.

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references

光纤光栅传感技术在桥梁施工监控中的应用 [J]. 张凤梅,雷振山,刘德和. 传感器与微系统 . 2006(02)

材料力学教程[M]. 高等教育出版社 , 单辉祖编, 2004

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