NDLI: Electrical Capacitance Tomography With Differential Sensor

Content Provider	IEEE Xplore Digital Library
Author	Ziqiang Cui Huaxiang Wang Wuliang Yin
Copyright Year	2001
Abstract	In electrical capacitance tomography, capacitance changes are used to determine the permittivity distribution in the imaging area. However, the changes are small compared with the standing capacitances, e.g., usually in the order of 10%-30%. For a single channel capacitance sensor, a differential configuration having a redundant pair of electrodes can be used to cancel the standing capacitance. However, there has been no report so far introducing such differential configuration into electrical capacitance tomography (ECT) sensors. This is mainly due to the fact that an ECT sensor is composed of an array of electrodes, e.g., 8, 12, and 16 and the capacitance measurements in ECT are required to interrogate capacitances of all electrode pair combinations, which introduce significant difficulty for a differential configuration. In this paper, a novel differential ECT sensor is proposed and designed, which consists of concentrically arranged dual array electrodes. It can also be thought as an additional array of electrodes being inserted between the measuring electrodes and the outer screen of a conventional ECT sensor. The new sensor design has been validated by the numerical simulation. A prototype sensor has been developed and evaluated with an field programmable gate arrays (FPGA)-based ECT measurement system, showing that with the proposed differential sensor, the dynamic range of the measured capacitance is reduced by $\sim 80$ % and an average improvement of 10.8 dB in signal-to-noise ratio is achieved.
Sponsorship	IEEE Sensors Council
Starting Page	5087
Ending Page	5094
Page Count	8
File Size	1968749
File Format	PDF
ISSN	1530437X
Volume Number	15
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitance Electrodes Capacitance measurement Capacitive sensors Permittivity measurement Electric potential capacitance measuring circuit electrical capacitance tomography differential sensor Electrical capacitance tomography
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Electrical Capacitance Tomography—Sensor Models, Design, Simulations, and Experimental Verification

An Interdigital Capacitive Sensor for Nondestructive Evaluation of Wire Insulation

Capacitance Planar Array Sensor for Fast Multiphase Flow Imaging

Application of electrical capacitance tomography to the void fraction measurement of two-phase flow

A Multimodal Tomography System Based on ECT Sensors

Fringing Field Capacitive Sensor for Measuring Soil Water Content: Design, Manufacture, and Testing

A Differential Capacitive Torque Sensor With Optimal Kinematic Linearity

Microelectronic capacitance transducer for particle detection

Segmented Capacitance Tomography Electrodes: A Design and Experimental Verifications

Electrical Capacitance Tomography With Differential Sensor

Similar Documents

Electrical Capacitance Tomography&#8212;Sensor Models, Design, Simulations, and Experimental Verification

An Interdigital Capacitive Sensor for Nondestructive Evaluation of Wire Insulation

Capacitance Planar Array Sensor for Fast Multiphase Flow Imaging

Application of electrical capacitance tomography to the void fraction measurement of two-phase flow

A Multimodal Tomography System Based on ECT Sensors

Fringing Field Capacitive Sensor for Measuring Soil Water Content: Design, Manufacture, and Testing

A Differential Capacitive Torque Sensor With Optimal Kinematic Linearity

Microelectronic capacitance transducer for particle detection

Segmented Capacitance Tomography Electrodes: A Design and Experimental Verifications

Electrical Capacitance Tomography With Differential Sensor

Electrical Capacitance Tomography—Sensor Models, Design, Simulations, and Experimental Verification