Abstract

In the measurement of mutual capacitance between electrodes both the coupling and the leakage effect contribute to the measurement result whereas the leakage mode is dominant in the self capacitance mode. While the coupling effect is mainly defined by the geometry and material distribution close to the electrodes, the root cause or modulation of the leakage effect may be far away from the electrode. It is shown that utilizing both effects may lead to an improvement of an ECT-like scenario reconstruction performance in open environments (e.g. pretouch applications).

Details

Title
Investigations on the Leakage Effect in Capacitive Sensing
Author
Schlegl, Thomas 1 ; Bretterklieber, Thomas 1 ; Mühlbacher-Karrer, Stephan 2 ; Zangl, Hubert 2 

 Institute of Electrical Measurement and Measurement Signal Processing, Graz University of Technology, Graz, Austria 
 Institute of Smart System-Technologies - Sensors and Actuators, Alpen-Adria Universität, Klagenfurt, Austria 
Pages
1-5
Publication year
2014
Publication date
2014
Publisher
De Gruyter Poland
e-ISSN
11785608
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2860604957
Copyright
© 2014. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.