Real-time calibrating demodulation system of fiber Bragg grating sensor

CHEN Liang; HUANG Jun-bin; GU Hong-can; TAN Bo

doi:10.13873/j.1000-97872009.07.038

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Real-time calibrating demodulation system of fiber Bragg grating sensor

更新时间：2025-09-11

- Real-time calibrating demodulation system of fiber Bragg grating sensor
- Vol. 28, Issue 7, Pages: 89-91(2009)
- 作者机构：
  
  海军工程大学兵器工程系
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872009.07.038
  CLC： TP212.14
- Published：2009
- 稿件说明：
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[1]陈亮,黄俊斌,顾宏灿,谭波.一种实时校准的光纤Bragg光栅传感器解调系统[J].传感器与微系统,2009,28(07):89-91.

CHEN Liang, HUANG Jun-bin, GU Hong-can, et al. Real-time calibrating demodulation system of fiber Bragg grating sensor[J]. 2009, 28(7): 89-91.
[1]陈亮,黄俊斌,顾宏灿,谭波.一种实时校准的光纤Bragg光栅传感器解调系统[J].传感器与微系统,2009,28(07):89-91. DOI： 10.13873/j.1000-97872009.07.038.

CHEN Liang, HUANG Jun-bin, GU Hong-can, et al. Real-time calibrating demodulation system of fiber Bragg grating sensor[J]. 2009, 28(7): 89-91. DOI： 10.13873/j.1000-97872009.07.038.

摘要

为了提高光纤Bragg光栅（FBG）传感器阵列的信号解调精度

基于窄带光源问讯解调原理

提出了引入带标记热稳定标准具模块来实现实时校准的方案

利用12位A/D采集模块将信号采入计算机

在虚拟仪器软件LabVIEW下处理信号

峰值检测方法为分段寻峰。实验表明:该方案对FBG传感器中心波长位移的最大解调精度为1 pm

相对于无实时校准模块方案下的解调精度提高了10倍以上

在应变为1×10-4的范围内

测量误差小于1.5×10-6。

Abstract

To improve the demodulation precision of fiber Bragg grating（FBG）sensor array

a real-time calibrating demodulation system which is based on narrow band light source inquiring demodulation method and using impervious to temperature regulator with marker

is presented.The signal is gathered into computer by 12 bit A/D and processed by LabVIEW.The peak detection method is searching peak in subsections.Experiments show that the Bragg wavelength demodulation precision of FBG sensor reaches 1pm and is ten multiple higher than precision of system without real-time calibrating module.Then strain measured experiment shows the error is lower than 1.5×10-6 in 1×10-4 range.

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references

基于长信号快速相关算法的FBG传感解调 [J]. 杨广学,康守强,李忠华,宋立新,王玉静. 光电子·激光 . 2006(11)

一种光纤Bragg光栅传感器解调系统的实验研究 [J]. 李安民,恽斌峰,汪弋平,崔一平. 光电子·激光 . 2006(04)

提高光纤Bragg光栅波长测量精度的方法 [J]. 付建伟,肖立志,张元中,赵晓亮,陈海峰. 光电工程 . 2006(02)

光纤光栅传感技术研究现状及发展前景 [J]. 曹晔,刘波,开桂云,董孝义. 传感器技术 . 2005(12)

Investigation of unwanted interferometric signals in a fiber Bragg grating sensor using a tunable laser and a first derivative interrogation technique [J] . C.C. Chan,J.M. Gong,W. Jin,M.S. Demokan. Optics Communications . 2000 (1)

In-fiber grating sensors [J] . Shulian Zhang,Sang Bae Lee,Xie Fang,Sang Sam Choi. Optics and Lasers in Engineering . 1999 (5)

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