Study on optical fiber multi-parameter sensor

Tongyu LIU; Zhen LI; Xiangjun MENG; Lin ZHAO; Fuqi WANG; Guofeng DONG; Jiqiang WANG

doi:10.11959/j.issn.1000-436x.2020039

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Study on optical fiber multi-parameter sensor

Topics: Intellgent Mine | 更新时间：2024-06-05

- Study on optical fiber multi-parameter sensor
- Journal on Communications Vol. 41, Issue 2, Pages: 66-73(2020)
- 作者机构：
  
  1. 山东省光纤传感技术重点实验室，齐鲁工业大学（山东省科学院）山东省科学院激光研究所，山东济南 250103
  2. 山东微感光电子有限公司，山东济南 250103
  3. 兖矿集团有限公司，山东济宁 272000
  4. 兖州煤业股份有限公司，山东济宁 272000
- 作者简介：
- 基金信息：
  
  The National Key Research and Development Program of China(2017YFC0804400);The Natural Science Foundation of Shandong Province(ZR2016QZ006)
- DOI：10.11959/j.issn.1000-436x.2020039
  CLC： TN253
- Online First：2020-02，
  
  Published：25 February 2020
- 稿件说明：
移动端阅览
Tongyu LIU, Zhen LI, Xiangjun MENG, et al. Study on optical fiber multi-parameter sensor[J]. Journal on Communications, 2020, 41(2): 66-73.
DOI：

Tongyu LIU, Zhen LI, Xiangjun MENG, et al. Study on optical fiber multi-parameter sensor[J]. Journal on Communications, 2020, 41(2): 66-73. DOI： 10.11959/j.issn.1000-436x.2020039.

摘要

基于光纤Bragg光栅（FBG）检测原理，研发了适用于地下空间安全监测应用的光纤风速、温度、湿度等多参数传感器。光纤风速传感器基于激光致热光纤热线式流量检测原理，对于低风速有较高的灵敏度，风速从0变化到0.5 m/s时，FBG波长变化量为800 pm，采用解调精度为1 pm的光纤光栅解调仪，风速分辨率为0.7 mm/s。光纤湿度传感器通过在 FBG 光栅表面均匀涂覆湿度敏感的聚酰亚胺溶液，湿度变化导致光纤应变变化进而实现湿度测量。对新型光纤光栅温湿度传感器的性能参数进行测试，实验测试结果显示，传感器监测灵敏度为 4.2 pm/%RH ，检测精度小于±3%RH。

Abstract

Based on the principle of fiber Bragg grating detection

an optical fiber sensor for detecting wind speed and temperature and humidity in underground space was designed.The designed optical fiber wind speed sensor was based on the thermal flow detection method

which has high sensitivity to low wind speed.For the speed rising from 0 to 0.5 m/s

the wavelength variation is about 800 pm.For the demodulator with sensitivity of 1 pm

the speed resolution is 0.7 mm/s.Fiber optic humidity sensor was fabricated by uniform surface coating of FBG element in polyimide solution

and detection sensitivity of 4.2 pm/% RH was achieved with accuracy less than ± 3% RH.

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references

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