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Publication detail
KŘÍŽ, T.
Original Title
Noise Infuence of Magnetic Field to Conductivity Image Reconstruction
Type
conference paper
Language
English
Original Abstract
The paper presents a conductivity calculation from values of the magnetic flux density measured outside the specimen. There is described the analysis of the noise influence that is presented in the measured values of a magnetic field. A conductivity calculation is based on the electrical impedance tomography (EIT) algorithm. The standard EIT exploited measured voltage values on electrodes placed at specimen boundaries to a conductivity calculation. The direct current source or the low frequency current source is connected to a specimen. A conductivity calculation is based on a minimizing of a suitable objective function. The least squares method is very often used for a minimization of an objective function. The Tikhonov regularization method is used in order to ensure the stability of an algorithm. The stability and the accuracy are dependent on an accuracy of measured voltage values.
Keywords
EIT, magnetic field, conductivity reconstruction, noise influence
Authors
RIV year
2012
Released
30. 8. 2012
Publisher
The Electromagnetic Academy
Location
Cambridge
ISBN
978-1-934142-22-6
Book
Proceedings of PIERS 2012 MOSCOW
Pages from
271
Pages to
275
Pages count
5
BibTex
@inproceedings{BUT94742, author="Tomáš {Kříž}", title="Noise Infuence of Magnetic Field to Conductivity Image Reconstruction", booktitle="Proceedings of PIERS 2012 MOSCOW", year="2012", pages="271--275", publisher="The Electromagnetic Academy", address="Cambridge", isbn="978-1-934142-22-6" }