Journal on Communications ›› 2020, Vol. 41 ›› Issue (2): 66-73.doi: 10.11959/j.issn.1000-436x.2020039

• Topics: Intellgent Mine • Previous Articles     Next Articles

Study on optical fiber multi-parameter sensor

Tongyu LIU1,2,Zhen LI1,Xiangjun MENG3,Lin ZHAO1,Fuqi WANG4,Guofeng DONG1,Jiqiang WANG1   

  1. 1 The Key Laboratory of Optical Fiber Sensing Technology of Shandong Province,Laser Research Institute of Shandong Academy of Sciences,Qilu Technology University (Shandong Academy of Sciences),Jinan 250103,China
    2 Shandong Micro-Sensor Photonics Ltd.,Jinan 250103,China
    3 Yanzhou Mining Group Co.,Ltd.,Jining 272000,China
    4 Yanzhou Coal Mining Company Limited,Jining 272000,China
  • Revised:2020-01-17 Online:2020-02-25 Published:2020-03-09
  • Supported by:
    The National Key Research and Development Program of China(2017YFC0804400);The Natural Science Foundation of Shandong Province(ZR2016QZ006)

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.

Key words: optical fiber sensor, underground space, wind speed, temperature and humidity

CLC Number: 

No Suggested Reading articles found!