Practical application of electrical impedance tomography and electrical resistive tomography

Kriz, T.; Roubal, Z.

doi:10.1109/piers.2016.7734692

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…The time for switching the injection and measuring channels during the measurement tcommut is determined by the switching time of the channels of the multiplexers. Taking into account the average switching time of the analog multiplexer (no more than 200 ns) [3,4], we can conclude that tcommut does not make a significant contribution to t even with multiple channel switching in a three-dimensional EIT with a large number of belts.…”

Section: Materials and Research Methodsmentioning

confidence: 93%

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Technique for estimating the time spent on measuring and computing process in three-dimensional electrical impedance tomography

Aleksanyan,

Kucher,

Shcherbakov

2023

E3S Web Conf.

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The work is devoted to the problems of estimating time delays that arise in studies using the method of three-dimensional electrical impedance tomography. The block diagram of the hardware-software complex of three-dimensional electrical impedance tomography is considered. A general algorithm for visualizing the internal structures of the object under study by the method of three-dimensional electrical impedance tomography is described, and it is shown which parts of it affect the occurrence of time delays. Methods for minimizing the time delays that occur during research are described, which will reduce the time for obtaining research results and increase the frequency of their output.

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Section: Materials and Research Methodsmentioning

confidence: 93%

“…The electrical impedance tomography device [1,2] (EIT) generally consists of an injected current source [3], a switching circuit and a measurement circuit. These components are controlled by the microcontroller of the EIT device connected to a personal computer.…”

Section: Introductionmentioning

confidence: 99%

Technique for estimating the time spent on measuring and computing process in three-dimensional electrical impedance tomography

Aleksanyan,

Kucher,

Shcherbakov

2023

E3S Web Conf.

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“…The finite element method (FEM) is widely used for modeling solid-state mechanics [4], flow [3], and magnetodynamic systems, including microwave [9] and magnetoinductive [7] systems. Recently developed open-source FEM-based toolchains give the unprecedented possibility of flexible modeling and development of advanced and sophisticated systems, such as eddy current tomography [8], resistive tomography [6,11], or airplane mechanics optimization [13].…”

Section: Wprowadzeniementioning

confidence: 99%

Improved Control of Mesh Density in Adaptive Tetrahedral Meshes for Finite Element Modeling

Ostaszewska-Liżewska¹,

Kopala²,

Szewczyk³

2022

PAR

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Tetrahedral meshing is the critical element of finite element modeling. Recently, adaptive meshing has been commonly used. In such meshing, according to the Delaunay method, mesh density is connected with the curvature of modeled object’s edge. Such a method is especially efficient during the modeling of mechanical systems. However, the efficiency of commonly used meshing algorithms is strongly limited in surface-focused phenomena, such as eddy current induced by magneto-dynamic processes. The paper proposes the improved method of Delaunay meshing considering the specific requirements of magnetodynamic systems. In the proposed method, tetrahedral mesh density may be flexibly modified according to the needs of modeled physical phenomena, such as eddy current density. As a result, physical effects may be efficiently and accurately described in finite element models. The paper presents the example of implementing the proposed solution for cylindrical wire. The complete source code is available as open-source software for further practical use and development.

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“…The need to assess the energy consumption of technical means of EIT [1,2] is dictated not only by the mandatory certification procedures that establish the energy efficiency class of medical equipment [3]. Such information becomes relevant and necessary when designing the power systems of medical institutions: not only systems for distributing electrical energy, but also systems that ensure its uninterrupted supply, which is especially important in intensive care units, operating rooms, etc.…”

Section: Introductionmentioning

confidence: 99%

Methodology for assessing the energy consumption of three-dimensional electrical impedance tomography technical means

Aleksanyan,

Kucher,

Shcherbakov

2023

E3S Web Conf.

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The paper deals with the issues of energy consumption of complexes of three-dimensional electrical impedance tomography. The designs of stationary complexes and wearable devices are considered. Their block diagrams are developed and considered. The main elements of the considered versions are described, their contribution to the total energy consumption of EIT devices is estimated. Consumers of electrical energy critical for one or another performance are indicated.

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Practical application of electrical impedance tomography and electrical resistive tomography

Cited by 7 publications

References 4 publications

Technique for estimating the time spent on measuring and computing process in three-dimensional electrical impedance tomography

Technique for estimating the time spent on measuring and computing process in three-dimensional electrical impedance tomography

Improved Control of Mesh Density in Adaptive Tetrahedral Meshes for Finite Element Modeling

Methodology for assessing the energy consumption of three-dimensional electrical impedance tomography technical means

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