一种基于电势分布的电容成像敏感分布计算方法

计算物理 ›› 2006, Vol. 23 ›› Issue (1): 87-92.

一种基于电势分布的电容成像敏感分布计算方法

牟昌华, 彭黎辉, 姚丹亚, 张宝芬, 萧德云

清华大学自动化系检测与电子技术研究所, 北京 100084

收稿日期:2004-11-18 修回日期:2005-01-24 出版日期:2006-01-25 发布日期:2006-01-25
作者简介:牟昌华(1976-),男,浙江黄岩,博士生,主要从事两相流测量、电容成像研究.
基金资助:
国家自然科学基金(60204003)资助项目

A Calculation Method of Sensitivity Distribution with Electrical Capacitance Tomography

MOU Chang-hua, PENG Li-hui, YAO Dan-ya, ZHANG Bao-fen, Xiao De-yun

Department of Automation, Tsinghua University, Beijing 100084, China

Received:2004-11-18 Revised:2005-01-24 Online:2006-01-25 Published:2006-01-25

摘要/Abstract

摘要： 系统分析了电容成像(Electrical capacitance tomography,简称ECT)系统敏感分布和电势分布的关系,统一了计算公式,该目的简单且计算量小.仿真表明,采用该目的计算的ECT敏感分布,与采用定义计算的结果吻合.

关键词: 电容成像, 图像重建, 敏感分布, 高斯定理

Abstract: The relationship between the permittivity distribution and the measured capacitance in electrical capacitance tomography (ECT) is described by the sensitivity distribution which directly affects the image reconstruction. The sensitivity distribution is mainly computed according to its definition which is complicated and time-consuming. We analyze relationship between the sensitivity distribution and the electric potential distribution in ECT. The calculation formulae are pressented. The method is simple and fast. Simulation results show that the sensitivity distribution obtained by this method is consistent with that of the traditional method.

Key words: electrical capacitance tomography, image reconstruction, sensitivity distribution, Gauss divergence theorem

中图分类号:

TP23
TH7

牟昌华, 彭黎辉, 姚丹亚, 张宝芬, 萧德云. 一种基于电势分布的电容成像敏感分布计算方法[J]. 计算物理, 2006, 23(1): 87-92.

MOU Chang-hua, PENG Li-hui, YAO Dan-ya, ZHANG Bao-fen, Xiao De-yun. A Calculation Method of Sensitivity Distribution with Electrical Capacitance Tomography[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2006, 23(1): 87-92.

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