﻿ 对称性分析在单目标电阻抗成像中的应用

# 对称性分析在单目标电阻抗成像中的应用The Application of Symmetry Analysis in Electrical Impedance Tomography with Single Target

Abstract: In order to improve the present algorithm of electrical impedance tomography and develop the application value of physics, the symmetry analysis is used to study the electrical impedance to-mography with single target. Comsol multiphysics 4.3a is used to design a thin disc experimental system with 16 electrodes, the current is in- and out-put from the endpoints of one diameter, 7 potential differences of symmetry points that correspond to the current diameter are analyzed and their relation with the vector position and radius of the target small circle’s center are also discussed. Using symmetry analysis can determine the vector position of the small circle’s center and its radius in which π/8 central angle, this is very important for the initial value choosing of static electrical impedance tomography algorithm; the vector position of target circle’s center and its radius have different effect to the 7 potential difference and these different effect can be used to remove some uncertainty about to determine the vector position of target circle’s center and its radius, this point has important reference value for improving the imaging quality and velocity; and the symmetry analysis is decisive for those only need judge “yes or no” cases.

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