Quasi-distributed sensing network based on coherence multiplexing and spatial division multiplexing for coal mine security monitoring

Tian-hao XIA; Wei-sheng LIU; Bin ZHOU; Bo-bo GU; Chun-sheng YAN

doi:10.1631/jzus.C0910716

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Quasi-distributed sensing network based on coherence multiplexing and spatial division multiplexing for coal mine security monitoring

计算机与自动化 | Updated：2022-08-31

- Quasi-distributed sensing network based on coherence multiplexing and spatial division multiplexing for coal mine security monitoring
- Quasi-distributed sensing network based on coherence multiplexing and spatial division multiplexing for coal mine security monitoring
- 信息与电子工程前沿（英文） 2010年11卷第10期页码：762-766
- Affiliations：
  
  Centre for Optical and Electromagnetic Research, State Key Lab for Modern Optical Instrumentation, Zhejiang University, Hangzhou 310058, China
- Author bio：
  
  ‡Corresponding Author
- Funds：
- DOI：10.1631/jzus.C0910716
  中图分类号：
- 收稿：2009-11-18，
  
  修回：2010-09-03，
  
  录用：2010-03-06，
  
  纸质出版：2010-10
- Accepted：
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Quasi-distributed sensing network based on coherence multiplexing and spatial division multiplexing for coal mine security monitoring[J]. 信息与电子工程前沿（英文）, 2010,11(10):762-766.

Tian-hao XIA, Wei-sheng LIU, Bin ZHOU, et al. Quasi-distributed sensing network based on coherence multiplexing and spatial division multiplexing for coal mine security monitoring[J]. Frontiers of Information Technology & Electronic Engineering, 2010, 11(10): 762-766.
Quasi-distributed sensing network based on coherence multiplexing and spatial division multiplexing for coal mine security monitoring[J]. 信息与电子工程前沿（英文）, 2010,11(10):762-766. DOI： 10.1631/jzus.C0910716.

Tian-hao XIA, Wei-sheng LIU, Bin ZHOU, et al. Quasi-distributed sensing network based on coherence multiplexing and spatial division multiplexing for coal mine security monitoring[J]. Frontiers of Information Technology & Electronic Engineering, 2010, 11(10): 762-766. DOI： 10.1631/jzus.C0910716.

摘要

Abstract

A low-cost fiber Bragg grating (FBG) sensing system for coal-mine security monitoring is proposed in this paper. Based on the coherence multiplexing (CM) and spatial division multiplexing (SDM) techniques

this hybrid sensing network can support more than 40 sensors for quasi-distributed detection. It is demonstrated experimentally that the multiplexed sensing signal of each sensor can be clearly distinguished by an optical low-coherence reflectometry (OLCR). Methane concentration is detected with maximum sensitivities of an intensity variation of 10.92% and a concentration variation of 1%

using a well-designed sensor structure. Strain and temperature are also detected by this system

which also exhibits good results in the experiment.

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