半导体光子学与技术, 1998, 4 (4): 248, 网络出版: 2011-08-08  

Design of Laser Radar Fiber Optic Liquid Level Sensor System

Design of Laser Radar Fiber Optic Liquid Level Sensor System
作者单位
1 Dept. of Computer, Tsinghua University, Beijing 100084, CHN
2 Dept. of Physics
3 Dalian University, Dalian 116001, CHN
4 Dalian University of Technology, Dalian 116023, CHN
摘要
Abstract
A novel fiber optic liquid level sensor based on laser radar(ladar)is reported here.Using the perfect technique of ladar in which the phase of amplitude modulated light wave reflected from the liquid suface is compared with that of original modulation signal,the disance can be measured precisely.A special symmetric compensating coaxial optical system is proposed to eliminate many adverse effects.It realized the one-time electronic-free optical measurement on a simulated oil tank and achieves an accuracy of 0.3%.,within a temperature range of -10℃-+40℃ over a measuring of 0~10 m.

QI Bing, QI Fei, PENG Wei. Design of Laser Radar Fiber Optic Liquid Level Sensor System[J]. 半导体光子学与技术, 1998, 4(4): 248. QI Bing, QI Fei, PENG Wei. Design of Laser Radar Fiber Optic Liquid Level Sensor System[J]. Semiconductor Photonics and Technology, 1998, 4(4): 248.

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