Design on ultra-high speed demodulation system for FBG sensor networks based on OTDM

CHEN Juan-zi; YAN Lian-shan; ZENG De-bing; WU Zong-ling

doi:10.13873/j.1000-97872012.08.018

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Design on ultra-high speed demodulation system for FBG sensor networks based on OTDM

更新时间：2025-09-11

- Design on ultra-high speed demodulation system for FBG sensor networks based on OTDM
- Vol. 31, Issue 8, Pages: 123-125+129(2012)
- 作者机构：
  
  西南交通大学信息光子与通信研究中心
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.08.018
  CLC： TN929.5;TP212.9
- Published：2012
- 稿件说明：
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[1]陈娟子,闫连山,曾德兵,吴宗玲.基于OTDM的FBG传感器网络超高速解调系统的设计[J].传感器与微系统,2012,31(08):123-125+129.

CHEN Juan-zi, YAN Lian-shan, ZENG De-bing, et al. Design on ultra-high speed demodulation system for FBG sensor networks based on OTDM[J]. 2012, 31(8): 123-125+129.
[1]陈娟子,闫连山,曾德兵,吴宗玲.基于OTDM的FBG传感器网络超高速解调系统的设计[J].传感器与微系统,2012,31(08):123-125+129. DOI： 10.13873/j.1000-97872012.08.018.

CHEN Juan-zi, YAN Lian-shan, ZENG De-bing, et al. Design on ultra-high speed demodulation system for FBG sensor networks based on OTDM[J]. 2012, 31(8): 123-125+129. DOI： 10.13873/j.1000-97872012.08.018.

摘要

基于光纤Bragg光栅（FBG）和光时分复用（OTDM）的基本原理研究匹配光栅应变传感器网络的高速解调问题。给出了运用FPGA+ARM的匹配光栅应变解调系统设计

实现了多个FBG信道的同时监测。重点在通过寻峰算法寻到峰值的情况下

结合一种复合滤波算法（限幅法+滑动滤波法）

极大地抑制了光路和电路中产生的噪声

将峰值功率变化范围由-1.03 dB压缩到-0.31 dB

使得所设计的系统能够在多种环境中应用

具有重要的参考价值。

Abstract

Based on the principle of fiber Bragg grating（FBG）and optical time-division multiplexing（OTDM）

a high-speed demodulation scheme for the matched-grating strain sensor network is proposed.Ultra-high speed demodulation system for multiple FBG senor channels is achieved using FPGA+ARM circuit design.Especially

the noise effect brought by either light path or circuit is significantly suppressed using a composite filtering algorithm

and the variation range of the peak power is reduced from-1.03dB to-0.31dB.The designed system can be used in various environments and has important reference value.

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references

长周期光纤光栅传感信号解调技术现状与发展 [J]. 华静,刘月明,刘涛,皇甫晓洪. 传感器与微系统 . 2011(11)

基于匹配光栅解调的FBG轨道传感器研究 [J]. 王圣根,闫连山,潘炜,罗斌,郭利康,温坤华. 铁道学报 . 2011(09)

光纤光栅压力传感器增敏技术发展评述 [J]. 刘鹏飞,刘国军,王永杰,赵强,李芳. 传感器与微系统 . 2011(08)

干涉型光纤传感器解调方法改进与研究 [J]. 邱立忠,曹家年,刘海亮. 传感器与微系统 . 2011(08)

光纤光栅时分复用传感系统 [J]. 耿淑伟,余有龙. 哈尔滨工业大学学报 . 2002(02)

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