电阻层析成像测量模式仿真研究  

Study on Modes of Measurement for Electrical Resistant Tomography System by Simulation

作　　者：王晓星[1] 吴锡令[1] 

机构地区：[1]中国石油大学资源与信息学院,北京102249

出　　处：《计算机仿真》2008年第5期218-221,共4页Computer Simulation

基　　金：国家自然科学基金项目(60472019)

摘　　要：电阻层析成像可分为相邻、相对和对角三种测量模式。为了分析不同模式下边界测量信号和敏感场的差异,建立了传感器的电流激励、电压测量有限元模型并开发了有限元软件包,可以方便的对场域进行仿真研究。仿真结果表明,相对模式和对角模式的测量电压均高于相邻模式,有利于测量;敏感场均匀性也好于相邻模式,有利于提高反演成像质量,但相邻模式电极间切换简单、电路容易实现。在硬件条件允许的情况下,相对模式和对角模式将成为电阻层析成像更好的发展方向。Electrlcal Resistant Tomography has three modes of measurement： neighboring, opposite and diagonal. In order to analyze the boundary potential and sensitive field in different modes that are current-inspirited and voltage-measured, a finite element software package is developed which makes the research convenient. The simulation results show, the potentials of both opposite and diagonal modes are higher than that of neighboring mode, which advantages the measurement, and their homogeneities of sensitive field are also better, which make the backward imaging better, However, neighboring mode can be realized easier. Therefore, when the hardware condition develops, opposite and diagonal modes are more promising.

关 键 词：电阻层析成像 测量模式 测量电压 敏感场 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]