电容层析成像系统阵列电极的优化设计

Optimum Design of Array Electrode for ECT System

介绍了电容层析成像系统的基本原理和电容敏感阵列结构及其数学模型.采用有限元法,分析了阵列电极结构参数对测量的影响,并进行了优化设计,获得了一组优化结构参数.结果表明,设计的电容阵列敏感电极具有较高的空间分辨率,分辨率优于10%.

This paper mainly introduces the basic principle about electrical capacitance tomography(ECT) system, and describes the structure and mathematic model of the capacitance sensing array. The paper also analyses the effect of the structure parameters of array electrode on the measurements, and makes optimum design using the finite element method. A set of optimum parameters is obtained. The computer simulation indicates that the capacitance sensing array electrode has higher space resolution,which is better than 10%.