| 电容层析成像的仿真研究 |
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| 引用本文： | 颜华,高静. 电容层析成像的仿真研究[J]. 系统仿真学报, 2003, 15(11): 1625-1627 |
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| 作者姓名： | 颜华 高静 |
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| 作者单位： | 沈阳工业大学信息科学与工程学院,沈阳,110023 |
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| 基金项目： | 辽宁省科委基金项目(2001102031)，辽宁省教委基金项目(990121039) |
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| 摘 要： | 探讨了电容层析成像(ECT)系统仿真研究的内容和意义。介绍了自开发的ECT系统三维有限元分析软件的主要功能及特点。该软件的最大特点是实现了灵敏度分布的快速计算。用该软件分析了三种轴向结构不同的ECT传感器的敏感场，即UMIST型：测量极板的上下设置有接地的环型保护极板；METC型：测量极板的上下设置有分段驱动的保护极板；Bergen型：无轴向保护极板。比较分析了它们的边缘效应，静态电容值和三维灵敏度分布。分析结果对ECT传感器的结构选型及参数设计有指导意义。
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| 关 键 词： | 电容层析成像 有限元分析 仿真研究 边缘效应 三维灵敏度分布 |
| 文章编号： | 1004-731X(2003)11-1625-03 |
| 修稿时间： | 2002-08-06 |
The Simulation Study of the Electrical Capacitance Tomography |
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| YAN Hua,GAO Jing. The Simulation Study of the Electrical Capacitance Tomography[J]. Journal of System Simulation, 2003, 15(11): 1625-1627 |
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| Authors: | YAN Hua GAO Jing |
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| Abstract: | The simulation of electrical capacitance tomography (ECT) system is discussed. The main function and feature of the self-developed three-dimensional finite-element simulation software are described. Its most outstanding feature is the fast calculation of sensitivity distribution. The sensing fields of three different structure capacitance tomography sensors, i.e. type UMIST: with earthed ring guards; type METC: with driven segmented guards and type Bergen: without guards, are analyzed by using the software. Their fringe effects, standing capacitances and the three-dimensional distributions of sensitivity are compared. The analysis results are helpful to the structure selection and the parameter design of capacitance tomography sensors. |
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| Keywords: | capacitance tomography finite element analysis simulation research fringe effect three-dimensional distribution of sensitivity y |
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