A Measurement System for Electrical Impedance Tomography

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F13%3APU130374" target="_blank" >RIV/00216305:26220/13:PU130374 - isvavai.cz</a>

Výsledek na webu

<a href="http://piers.org/piersproceedings/piers2013StockholmProc.php" target="_blank" >http://piers.org/piersproceedings/piers2013StockholmProc.php</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A Measurement System for Electrical Impedance Tomography

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

A Measurement System for Electrical Impedance Tomography

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

PIERS 2013 Stockholm Proceedings

ISBN

978-1-934142-26-4

ISSN

1559-9450

e-ISSN

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Počet stran výsledku

5

Strana od-do

905-909

Název nakladatele

The Electromagnetic Academy

Místo vydání

Cambridge, MA 02138

Místo konání akce

Stockholm

Datum konání akce

12. 8. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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