Development of a differential optical-fiber displacement sensor
Development of a differential optical-fiber displacement sensor
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DOI：
10.1364/ao.38.001103
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发表时间：
1999-03-01
期刊：
影响因子：
1.9
通讯作者：
Tanaka, K
中科院分区：
文献类型：
--
作者：
Suganuma, F;Shimamoto, A;Tanaka, K
提出并论证了一种新型的光纤位移传感器。它由激光二极管光源、光纤探头和两个光电探测器组成。探头的束被分成三部分：用于照明的束中的中心位置的光纤、用于接收的第一邻近光纤(第一部分)和用于接收的剩余光纤(第二部分)。第一部分和第二部分接收光纤输出信号的差值与总和的比值可以消除传感器对目标反射率的灵敏度变化。对传感器的性能进行了几何分析。工作距离由中心照明光纤到第I部分和第II部分接收光纤之间的边界的距离确定。用三种不同的反射率目标进行的实验测量证实了传感器的性能与分析所预测的三种反射率无关。(C)1999年美国光学学会。
A novel optical-fiber displacement sensor is proposed and demonstrated. It consists of a laser diode light source, an optical-fiber probe, and two photodetectors. The bundling of the probe is sectioned into three parts: a centrally positioned fiber in the bundle for illumination, the first-neighbor fibers for receiving (part I), and the remaining fibers for receiving (part II). The ratio of the difference to the sum of the output signals from the part I and the part II receiving fibers can eliminate the variation in the sensitivity of the sensor to reflectivity of the target. The performance of the sensor is geometrically analyzed. The working distance is determined by the distance from the centered illuminating fiber to the boundary between the part I and the part II receiving fibers. The experimental measurements made with three different reflectivity targets confirm that the sensor performance is independent of the three reflectivities, as predicted by the analysis. (C) 1999 Optical Society of America.