Analysis of conductivity effects in 2D electrical tomography systems: a simulation study

International Conference on Electronics, Communication and Instrumentation (ICECI) Pub Date : 2014-10-09 DOI:10.1109/ICECI.2014.6917605

S. Chakraborty, Deborshi Chakraborty, M. Chattopadhyay

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引用次数: 2

Abstract

In this paper, electrical impedance tomography (EIT), a method of imaging the interior permittivity distribution of an inhomogenity by measuring current and voltage at the surface is applied for determining the shape and position of unwanted growth within a specified area. The model, we have developed, using 8 and 16 electrode Electrical Tomography system is used to identify the presence of such objects within a particular area and can also figure out the shape of the same. Here, a regular shaped object (considered to be air) is surrounded by water is designed in 2D platform of FEM based Multiphysics software. Then a potential difference on the boundaries of the simulated model is collected with the array of gold electrodes. The data thus obtained are plotted to obtain the voltage density plots. The conductivity values of the water surrounding medium are varied and the capacitive effects across the electrode pairs are also considered. The constructed models in the software are solved with the forward solver of Electrical Impedance Tomography.

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二维电断层成像系统中电导率效应的分析:模拟研究

在本文中，电阻抗层析成像(EIT)是一种通过测量表面的电流和电压来成像非均匀性的内部介电常数分布的方法，用于确定指定区域内不需要的生长的形状和位置。我们开发的模型，使用8和16电极电断层扫描系统用于识别特定区域内此类物体的存在，并且还可以计算出相同的形状。本文在基于多物理场有限元软件的二维平台上设计了一个被水包围的规则形状物体(假定为空气)。然后利用金电极阵列收集模拟模型边界上的电位差。将得到的数据绘制成电压密度图。水周围介质的电导率值是变化的，并且还考虑了电极对之间的电容效应。利用电阻抗层析成像的正演求解器对软件中构造的模型进行求解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Conference on Electronics, Communication and Instrumentation (ICECI)

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