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Proceedings Paper

The research of circle grid-capacitance sensor
Author(s): Dezhou Xing; Chengbo Yu; Xingang Chen; Ge Zhu
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Paper Abstract

A circle grid-capacitance sensor is capable of high precision. How to correctly design and improve its precision and resolution is a prime research objective. There provided a new idea that how to realize circle grid-capacitance has high resolution by numbered emitter-poles and ruler poles. By analyzing the principle of capacitance sensor measuring the angle-displacement, there first provided a design idea that making output voltage to pulse signal, per pulse stands for a certain amount angle-displacement. And then, for getting more pulses when object rotated a certain angle, that is, the sensor will has high resolution, there must be many emitter-poles affixed on moveable grid-disk and many ruler-poles affixed on fix grid-disk. To ensure there is no pulses occurred at the same time, the number of emitter-poles and that of ruler-poles must be prime number to each other at least. At the same time, to ensure each pulse interval must be equal, the number of emitter-poles and that of ruler-poles have to be considered further more. This technique provides a new idea for right designing circle grid-capacitance and for improving its precision and resolution.

Paper Details

Date Published: 20 February 2006
PDF: 5 pages
Proc. SPIE 6041, ICMIT 2005: Information Systems and Signal Processing, 604128 (20 February 2006); doi: 10.1117/12.664367
Show Author Affiliations
Dezhou Xing, Chongqing Institute of Technology (China)
Chengbo Yu, Chongqing Institute of Technology (China)
Xingang Chen, Chongqing Institute of Technology (China)
Ge Zhu, Chongqing Institute of Technology (China)

Published in SPIE Proceedings Vol. 6041:
ICMIT 2005: Information Systems and Signal Processing
Yunlong Wei; Kil To Chong; Takayuki Takahashi, Editor(s)

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