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Negative measurement sensitivity values of planar capacitive imaging probes
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Yin, Xiaokang, Chen, Guoming, Li, Wei and Hutchins, David A. (2014) Negative measurement sensitivity values of planar capacitive imaging probes. In: QNDE Conference, Baltimore, Maryland, USA, 21–26 Jul 2013, Volume 1581 pp. 1500-1504. ISBN 978735412118. doi:10.1063/1.4865000 ISSN 0094-243X.
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Official URL: http://dx.doi.org/10.1063/1.4865000
Abstract
The measurement sensitivity distribution of planar capacitive imaging (CI) probes describes how effectively each region in the sensing area is contributing to the measured charge signal on the sensing electrode. It can be used to determine the imaging ability of a CI probe. It is found in previous work that, there are regions in the sensing area where the change of the charge output and the change of targeting physical parameter are of opposite trends. This opposite correlation implies that the measurement sensitivity values in such regions are negative. In this work, the cause of negative sensitivity is discussed. Experiments are also designed and performed so as to verify the existence of negative sensitivity and study the factors that may affect the negative sensitivity distributions.
Item Type: | Conference Item (Paper) | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
ISBN: | 978735412118 | ||||
ISSN: | 0094-243X | ||||
Official Date: | 18 February 2014 | ||||
Dates: |
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Volume: | Volume 1581 | ||||
Page Range: | pp. 1500-1504 | ||||
DOI: | 10.1063/1.4865000 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | QNDE Conference | ||||
Type of Event: | Conference | ||||
Location of Event: | Baltimore, Maryland, USA | ||||
Date(s) of Event: | 21–26 Jul 2013 | ||||
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