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Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique

In this study, we propose the use of the two-differential potential excitation technique in an Electrical Capacitance Tomography (ECT) system to improve: (1) the non-uniform sensitivity distribution caused by the non-uniform potential distribution in the central area; and (2) the nonlinear relation...

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Main Authors: Mohamad, Elmy Johana, Mohmad Ameran, Hanis Liyana, Abdul Rahim, Ruzairi, Omar, Md. Faizan Marwah
Format: Article
Language:English
Published: Penerbit UTM Press 2015
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utm.my/id/eprint/54953/1/RuzairiAbdulRahim2015_ElectricalCapacitanceTomography%28ECT%29.pdf
http://eprints.utm.my/id/eprint/54953/
http://dx.doi.org/10.11113/jt.v74.3661
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spelling my.utm.549532017-11-01T04:16:50Z http://eprints.utm.my/id/eprint/54953/ Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique Mohamad, Elmy Johana Mohmad Ameran, Hanis Liyana Abdul Rahim, Ruzairi Omar, Md. Faizan Marwah TK Electrical engineering. Electronics Nuclear engineering In this study, we propose the use of the two-differential potential excitation technique in an Electrical Capacitance Tomography (ECT) system to improve: (1) the non-uniform sensitivity distribution caused by the non-uniform potential distribution in the central area; and (2) the nonlinear relation between capacitance and material permittivity. A simulation of a 16-segmented ECT system is developed using COMSOL Multiphysics to observe the changes of the inter-electrodes capacitances and the permittivity of the dielectric material when two differential excitation potentials are injected. Generated phantoms and measured values are presented. An experiment using the real system is also carried out to verify the simulations results. By using this technique, it was shown that the relationship between the capacitances measured from inter-electrodes and the permittivity became more linear. In addition, potential distribution is increased in the central area indicating an increase in the sensitivity distribution in the central area. The use of this technique increases the level of detected signals and improves the SNR (signal-to-noise ratio) as compared to those achieved using standard single-voltage source methods. Penerbit UTM Press 2015-05 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/54953/1/RuzairiAbdulRahim2015_ElectricalCapacitanceTomography%28ECT%29.pdf Mohamad, Elmy Johana and Mohmad Ameran, Hanis Liyana and Abdul Rahim, Ruzairi and Omar, Md. Faizan Marwah (2015) Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique. Jurnal Teknologi, 74 (1). pp. 43-50. ISSN 0127-9696 http://dx.doi.org/10.11113/jt.v74.3661 DOI:10.11113/jt.v74.3661
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Mohamad, Elmy Johana
Mohmad Ameran, Hanis Liyana
Abdul Rahim, Ruzairi
Omar, Md. Faizan Marwah
Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique
description In this study, we propose the use of the two-differential potential excitation technique in an Electrical Capacitance Tomography (ECT) system to improve: (1) the non-uniform sensitivity distribution caused by the non-uniform potential distribution in the central area; and (2) the nonlinear relation between capacitance and material permittivity. A simulation of a 16-segmented ECT system is developed using COMSOL Multiphysics to observe the changes of the inter-electrodes capacitances and the permittivity of the dielectric material when two differential excitation potentials are injected. Generated phantoms and measured values are presented. An experiment using the real system is also carried out to verify the simulations results. By using this technique, it was shown that the relationship between the capacitances measured from inter-electrodes and the permittivity became more linear. In addition, potential distribution is increased in the central area indicating an increase in the sensitivity distribution in the central area. The use of this technique increases the level of detected signals and improves the SNR (signal-to-noise ratio) as compared to those achieved using standard single-voltage source methods.
format Article
author Mohamad, Elmy Johana
Mohmad Ameran, Hanis Liyana
Abdul Rahim, Ruzairi
Omar, Md. Faizan Marwah
author_facet Mohamad, Elmy Johana
Mohmad Ameran, Hanis Liyana
Abdul Rahim, Ruzairi
Omar, Md. Faizan Marwah
author_sort Mohamad, Elmy Johana
title Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique
title_short Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique
title_full Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique
title_fullStr Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique
title_full_unstemmed Electrical Capacitance Tomography (ECT): an improved sensitivity distribution using two-differential excitation technique
title_sort electrical capacitance tomography (ect): an improved sensitivity distribution using two-differential excitation technique
publisher Penerbit UTM Press
publishDate 2015
url http://eprints.utm.my/id/eprint/54953/1/RuzairiAbdulRahim2015_ElectricalCapacitanceTomography%28ECT%29.pdf
http://eprints.utm.my/id/eprint/54953/
http://dx.doi.org/10.11113/jt.v74.3661
_version_ 1643653648949968896
score 13.211869

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