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《Instrument Technique and Sensor》 2004-02
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Optical Fiber Frustrated-total-internal-reflection Based on High Accuracy Liquid Level Sensor

LI Guo-zhe,YU Qing-xu (Department of Physics,Dalian University of Technology,Dalian 116023,China)  
Combining the features of high sensitivity of the optical fiber frustrated-total-internal-reflection based sensor and high positioning accuracy of the single chip computer controlled stepping motor driving system,a novel fiber-optic level sensor system has been developed.The sensor head is made from standard multi-mode communication silica fiber with a taper tip.There is sensitive response of the reflected light signal from the fiber taper when the refraction index of its surrounding medium changes.As the fiber taper is attached to the single chip computer controlled stepping motor driving device,the liquid level can be tracked and displayed continuously.The system is able to measure the level of diesel oil,gasoline and other chemical liquid with a resolution of 0.1 mm and long term accuracy of ±0.4 mm in a full scale of 2 m.
【Fund】: 国家自然科学基金资助项目(60028505)
【CateGory Index】: TP212.12
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Chinese Journal Full-text Database 1 Hits
1 LI Ye-fang,LIANG Xiu-ping,WANG Xiao-xu,XING Li(Department of Physics,Dalian University of Technology,Dalian 116024,China);Liquid level sensor based on the change of fiber shape[J];Physics Experimentation;2006-02
Chinese Journal Full-text Database 10 Hits
1 YANG Huayong\ ,\ Lu Haibao\ ,\ XU Tao College of Mechatronic Engineering and automation, National University of Defense Technology, Changsha, Hu′nan, 410073 P.R.China;Summary on the Reflective Intensity-modulated Fiber Optic Sensor[J];Journal of Transcluction Technology;2001-04
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3 ZHANG Cheng~(1*),WANG Jin-hai~(1,2),CHEN Cai-he~2,ZHANG Bo~1,YUE Quan~11.College of Information and Communication Engineering,Tianjin Polytechnic University,Tianjin 300160,China;2.College of Precision Instrument and Optic-electronics Engineering,Key Laboratory of Optic-electronics InformationTechnical Science of EMC,Tianjin University,Tianjin 300072,China;Research and Design of an Interferometric Optical Fiber Sensor Measuring System Based on Digital Signal Processing[J];Chinese Journal of Sensors and Actuators;2007-01
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【Secondary Citations】
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