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KŘÍŽ, T. ROUBAL, Z. REZ, J.
Original Title
A Measurement System for Electrical Impedance Tomography
Type
conference paper
Language
English
Original Abstract
The authors present a measurement system designed to facilitate tests within electrical impedance tomography (EIT). More concretely, this system provides the input data for EIT-based conductivity image reconstruction. The realized setup includes a generator, a voltage-to-current converter, a switching unit, an accurate AC multimeter, and a measuring vessel. This vessel contains 16 stainless steel electrodes; a pair of the directly opposed electrodes is connected to the converter, and voltage is measured on the other electrodes. The current electrodes are periodically excited. For each instance of current excitation, a set of voltages is measured; thus, we obtain n(n-1) of measured voltage values, where n expresses the number of the electrodes. The measurement system is fully automated. To control the measurement, we created a program in the HP VEE environment. The measured sample consists in a saline solution, in which agar-based objects exhibiting different conductivity are placed; these objects then form defects. The applied intermittent excitation prevents the occurrence of electrolysis. The measurement is realized with several conductivity values as well as with various locations and number of defects in the saline solution.
Keywords
electrical impedance tomography, measure system
Authors
KŘÍŽ, T.; ROUBAL, Z.; REZ, J.
Released
25. 3. 2013
Publisher
The Electromagnetic Academy
Location
Cambridge, MA 02138
ISBN
978-1-934142-26-4
Book
PIERS 2013 Stockholm Proceedings
1559-9450
Periodical
Progress In Electromagnetics
Year of study
2
Number
08
State
United States of America
Pages from
905
Pages to
909
Pages count
5
URL
http://piers.org/piersproceedings/piers2013StockholmProc.php
BibTex
@inproceedings{BUT152166, author="Tomáš {Kříž} and Zdeněk {Roubal} and Jiří {Rez}", title="A Measurement System for Electrical Impedance Tomography", booktitle="PIERS 2013 Stockholm Proceedings", year="2013", journal="Progress In Electromagnetics", volume="2", number="08", pages="905--909", publisher="The Electromagnetic Academy", address="Cambridge, MA 02138", isbn="978-1-934142-26-4", issn="1559-9450", url="http://piers.org/piersproceedings/piers2013StockholmProc.php" }