电容耦合电阻层析成像传感器结构优化设计研究  

Optimum Design for Capacitively Coupled Electrical ResistanceTomography Sensor Configuration

作　　者：王保良[1] 张伟波[1] 黄志尧[1] 冀海峰[1] 李海青[1] 

机构地区：[1]浙江大学控制科学与工程学系工业控制技术国家重点实验室,杭州310027

出　　处：《传感技术学报》2012年第2期206-211,共6页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目(60972138)

摘　　要：针对电容耦合电阻层析成像传感器的优化设计,首先利用有限元仿真软件建立了12电极传感器有限元模型,并分析了后续图像重建所需的传感器灵敏场,之后将该仿真模型与实际传感器相应的测量数据及重建图像进行对比验证,研究表明仿真与实验结果能够较好吻合,为对传感器性能进一步研究提供可靠基础。为了提高系统稳定性及抗干扰能力,以该原始模型为基准,分别对两种不同结构的传感器模型进行仿真分析,并研究其对系统测量值的影响。最后,在选定了传感器的基本模型的基础上,基于对传感器性能影响最小的角度进行分析,对该传感器尺寸进行优化。本研究为系统设计提供重要依据。The optimization for sensor structure of capacitively coupled electrical resistance tomography（CCERT）is presented.The model of the 12-electrode sensor of CCERT has been established by finite element simulation software firstly,and sensitivity field has been calculated for the reconstruction of image.Then the finite element model is verified by comparing the simulation data and reconstructed image with that of experiment respectively.The result shows that the model is reasonable.The effect on the measurement data is studied by simulation for two different models of sensor.Finally,the optimum size of the screen of CCERT sensor is proposed with the minimum influence on the measurements based on the final sensor model discussed previously.The study can provide useful instruction for the design of CCERT sensor.

关 键 词：电阻层析成像 电容耦合 传感器优化设计 非接触 有限元 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]