Calibration and uncertainty analysis of FBG displacement sensors

CAO Min; WANG En; LI Bo; TANG Biao; XIAO Fan; LI Chuan

doi:10.13873/J.1000-9787(2016)04-0035-03

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Calibration and uncertainty analysis of FBG displacement sensors

更新时间：2025-09-11

- Calibration and uncertainty analysis of FBG displacement sensors
- Vol. 35, Issue 4, Pages: 35-37(2016)
- 作者机构：
  
  1. 云南电网有限责任公司电力科学研究院
  2. 南方电网公司电能计量重点实验室
  3. 昆明理工大学信息工程与自动化学院
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2016)04-0035-03
  CLC： TP212
- Published：2016
- 稿件说明：
移动端阅览
[1]曹敏,王恩,李博,唐标,肖范,李川.FBG位移传感器的标定与不确定度分析[J].传感器与微系统,2016,35(04):35-37.

CAO Min, WANG En, LI Bo, et al. Calibration and uncertainty analysis of FBG displacement sensors[J]. 2016, 35(4): 35-37.
[1]曹敏,王恩,李博,唐标,肖范,李川.FBG位移传感器的标定与不确定度分析[J].传感器与微系统,2016,35(04):35-37. DOI： 10.13873/J.1000-9787(2016)04-0035-03.

CAO Min, WANG En, LI Bo, et al. Calibration and uncertainty analysis of FBG displacement sensors[J]. 2016, 35(4): 35-37. DOI： 10.13873/J.1000-9787(2016)04-0035-03.

摘要

为了提高光纤Bragg光栅（FBG）位移传感器标定精度和实现自动标定

设计一种量程为18 cm的FBG位移传感器校准装置对FBG位移传感器进行在线校准。通过对FBG解调仪测量的波长量和计算得出的位移量进行最小二乘法拟合得到FBG传感器的静态标定系数

并对标定装置和传感器进行不确定度评定。实验结果表明:FBG位移传感器标定平台标定得到FBG位移传感器的灵敏度为0.014 5 nm/mm

线性度为99.87%

重复性误差为0.082%

校准装置的测量不确定度为0.11 mm。

Abstract

In order to improve calibration precision of fiber Bragg grating（ FBG） displacement sensor and achieve automatic calibration

FBG displacement sensor calibration devices which range of 18 cm are designed to calibrate FBG displacement sensor online. Static calibration coefficients of FBG sensor are obtained by using least square fitting method for wavelength measured by FBG demodulation device and displacement got by calculation

and conduct uncertainty evaluation for calibration device and sensor. Experimental results show that the sensitivity

linearity and repeatability error of FBG displacement sensor which got by the FBG displacement sensor calibration platform are 0. 0145 nm / mm

99. 87 %

0. 082 %

respectively

the uncertainty of measurement of calibration device is 0. 11 mm.

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Keywords

references

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