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Hubert Zangl, Georg Brasseur

Angular Measurement with Planar Capacitive Sensors

Besides magnetical and optical methods for non-contacting angular position measurement, capacitive sensors have proven reliability in automotive and industrial applications. Accuracies of 0.1° and better are commonly achieved at reading frequencies above 10 kHz. Typically these sensors use separate transmitter and receiver boards, which is a draw back in some applications because of additional space requirements and a time consuming and thus costly assembly. Furthermore, the proximity of the electronic circuitry to the electrodes prevents the application of such sensors in harsh environments. The paper presents a novel design of a single board planar sensor, where the electronics and the electrodes can be spatially separated allowing high temperature and pressure in the effective sensor space.

tm – Technisches Messen, Oldenbourg Wissenschaftsverlag

Print ISSN: 0171-8096
Volume: 70, 05/2003
Pages: 233

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