2 January 1998 Novel optical-electric sensor for displacement detection
Author Affiliations +
Proceedings Volume 3201, Sensors and Controls for Advanced Manufacturing; (1998); doi: 10.1117/12.298025
Event: Intelligent Systems and Advanced Manufacturing, 1997, Pittsburgh, PA, United States
A new method of detecting displacement by using a time interval is presented. A novel optical-electric sensor based on this method for displacement detecting was designed. In the mechanical structure of the sensor, the non-clearance mechanical joint and mechanical amplifying device are used to amplify the displacement accuracy. An optical-electric transition system is designed. There are two photoswitches in the system one is fixed, the other is movable. The change of the latter position acts on the change of displacement. By detecting a high frequency and constant pulse signal, the photoswitches transfers the position signal into time signal. With suitable transferring circuit, the system makes the certain displacement corresponding to the certain digital display. As a result, it realizes the displacement detecting. The sensor has high resolution and high stability. It is with a simple structure and a low cost and very suitable for long-period displacement condition monitoring.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Desheng Jiang, Lei Liang, Jiaqi Chen, Jun Huang, "Novel optical-electric sensor for displacement detection", Proc. SPIE 3201, Sensors and Controls for Advanced Manufacturing, (2 January 1998); doi: 10.1117/12.298025; https://doi.org/10.1117/12.298025


Signal detection

Digital electronics

Optical resolution


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