DocumentCode
1341333
Title
Capacitance tomography sensor without CMOS switches
Author
Yang, W.Q. ; York, T.A.
Author_Institution
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
Volume
33
Issue
14
fYear
1997
fDate
7/3/1997 12:00:00 AM
Firstpage
1211
Lastpage
1213
Abstract
Usually, CMOS switches are used to select excitation and detection electrodes in electrical capacitance tomography (ECT) systems. However, these switches cause charge injection or coupling leakage problems. An ECT sensor is described which does not use any switches directly connected to the measurement electrodes. The potentials on the electrodes are digitally controlled and the excitation field of the sensor is totally flexible. Experimental results show that the circuit performs well as either an excitation or a detection channel
Keywords
capacitance; electric sensing devices; electrodes; tomography; ECT sensor; capacitance tomography sensor; detection channel; digitally controlled potentials; electrical capacitance tomography; excitation field; measurement electrodes;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19970808
Filename
603576
Link To Document