Electrical Impedance Tomography-Based Spatial Reconstruction of Admittivity in a Cylindrical Object

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F20%3APU138030" target="_blank" >RIV/00216305:26220/20:PU138030 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/9286467" target="_blank" >https://ieeexplore.ieee.org/document/9286467</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ME49197.2020.9286467" target="_blank" >10.1109/ME49197.2020.9286467</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrical Impedance Tomography-Based Spatial Reconstruction of Admittivity in a Cylindrical Object

Popis výsledku v původním jazyce

The paper discusses experimental measurement, simulation, validation, and reconstruction of complex admittivity, with all of the steps performed by utilizing electrical impedance tomography. After a brief introduction, the main aspects of the research are characterized, including the principle of the forward problem, in which the complete electrode model is embedded; the basics of the inverse problem, comprising an objective function solved with the Gauss-Newton method; and the impact of the objective function`s regularization. The 8-electrode measuring configuration and the simulation environment are described in detail, as they facilitate the reconstruction process. The experiment-related portion of the paper outlines the measured voltages and phases for the homogeneous and inhomogeneous admittivity distribution inside the tomograph. Based on the measurement results, we reconstructed the image of the real and imaginary parts of the admittivity, using the EIDORS library to support the procedure. The obtained components were evaluated and compared with the actual position of the inserted object. The final images show that the determinability of the inhomogeneity position has generally improved through exploiting the real part of the complex admittivity; simultaneously, however, the stability of the imaginary part has visibly decreased.

Název v anglickém jazyce

Electrical Impedance Tomography-Based Spatial Reconstruction of Admittivity in a Cylindrical Object

Popis výsledku anglicky

The paper discusses experimental measurement, simulation, validation, and reconstruction of complex admittivity, with all of the steps performed by utilizing electrical impedance tomography. After a brief introduction, the main aspects of the research are characterized, including the principle of the forward problem, in which the complete electrode model is embedded; the basics of the inverse problem, comprising an objective function solved with the Gauss-Newton method; and the impact of the objective function`s regularization. The 8-electrode measuring configuration and the simulation environment are described in detail, as they facilitate the reconstruction process. The experiment-related portion of the paper outlines the measured voltages and phases for the homogeneous and inhomogeneous admittivity distribution inside the tomograph. Based on the measurement results, we reconstructed the image of the real and imaginary parts of the admittivity, using the EIDORS library to support the procedure. The obtained components were evaluated and compared with the actual position of the inserted object. The final images show that the determinability of the inhomogeneity position has generally improved through exploiting the real part of the complex admittivity; simultaneously, however, the stability of the imaginary part has visibly decreased.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 2020 19th International Conference on Mechatronics – Mechatronika (ME)

ISBN

978-1-7281-5601-9

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

114-119

Název nakladatele

IEEE345 E 47TH ST, NEW YORK, NY 10017 USA

Místo vydání

USA

Místo konání akce

Praha

Datum konání akce

2. 12. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000662155700022