| Design of Laser Radar Fiber Optic Liquid Level Sensor System |
| QIBing[1] QIFei[2] 等 |
| 关键词：光纤传感器 激光雷达 液面 |
| 主要内容：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 0-10m。 |
| 《半导体光子学与技术：英文版》 1998,4(4).-248-252 |
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