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本文提出利用光的受抑内全反射实现位移测量的新方法，分析了该传感器的工作原理，并设计了测量电路，计算了测量长度和透过率之间的关系，进行了初步试验
In this paper, a new method of displacement measurement using frustrated total internal reflection is proposed. The working principle of the sensor is analyzed. A measuring circuit is designed. The relationship between the measurement length and the transmittance is calculated. A preliminary test