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《Journal of Beijing Institute of Machinery》 1994-01
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An Optical Fibre Remote Sensing System of Displacement Generated by White Light Interferometer

Li Dong Qiu Huifu  
A new type of optical fibre remote sensing system of low-level CH_4gas inair is studied in this research work.it is realized for the first time by a method employing two cascade in terferometers connected with optical fibres for measuring passively the CH_4density in air. The key of the technique is the remote measuring of the optical path difference. Based on the present experiments,the measuring accuracy of the system is± 0.11%(1σ),i.e.,2.2% of the lower explosion limit of CH_4 density in air.This result sup- ports the conclusion that the fully optical CH_4 remote sensing system can be extensively used for the detection and monitoring of CH_4 in chemical industrial and fuel mining com- plexes as well as in residential area.
【CateGory Index】: TH744.3
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Chinese Journal Full-text Database 10 Hits
1 LI Chuan\ ,\ ZHANG Yimo\ ,\ LIU Tiegen\ ,\ CHEN Ximing\ ,\ LI Xin (The Key Laboratory of Optoelectronics Information Science & Technology, EMC, The Institute of Optoelectronics & Precision Instrument, Tianjin University, Tianjin, PRC, 300072);Optic Fiber Sensors of Full-Fiberoptic White Light Interference Type[J];Journal of Transcluction Technology;2001-02
2 XU Hai ying 1, JIANG Yong liang 1, WANG Li 2, LIU Ying 3, GAO Jie 3,WU Zong han 11. Department of Physics, Southeast Univisity, Nanjing 210096, China;2. Shenzhen Horn Electroacoustic Technology Company Ltd. Shenzhen 518109, China;3.Jiangsu Xingshun Electronic Co., Ltd., Xinghua Jiangsu 225700, China;Design and Research on the Sensing Probe of Fiber-optic Microphone[J];Journal of Transcluction Technology;2004-04
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7 ZHANG Yi-lin 1, YU Jian-rong 2, LIAO Yan-biao 3, LAI Shu-rong 3 (1.Department of Mathematic and Physics,Beijing Institute of Petro-chemical Technology,Beijing 102617,China; 2.Department of Mechanical Engineering,Beijing Institute of Petro-chemical Te;The Design of Optic Fiber Pressure Sensor[J];Journal of Optoelectronics.laser;2002-05
8 YUAN Li-Bo(Departmentof Physics; Harbin Shipbuilding Engineering institute, Harbin, 150001);Modulation types and its theoretical analysis methods[J];OPTICAL COMMUNICATION TECHNOLOGY;1994-02
9 HE Yong hui 1, JIANG Jian feng 2, ZHAO Wan sheng 3 (1 Baosteel Research Institute, Shanghai 201900, China) (2 Shanghai Jiaotong University, Shanghai 200030, China) (3 Harbin Institute of Technology, Harbin 150001, China);Surface 3D profiler based on scanning white light interferometry method[J];Optical Technology;2001-02
10 JI Xin-hua,YANG Xin-wei,CHEN Jin-long(Department of Mechanical Engineering,Tianjin University,Tianjin 300072,China);The measurement of Ⅲ type crack tip stress intensity factor by white light digital image analysis in frequency domination area[J];Optical Technique;2008-05
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