电阻层析成像系统全电极模型仿真研究  

Simulation study of complete electrical model for electrical resistance tomography

作　　者：曹海燕[1] 王化祥[2] 

机构地区：[1]石家庄经济学院信息工程学院,石家庄050031 [2]天津大学电气与自动化工程学院,天津300072

出　　处：《计算机工程与应用》2012年第3期117-119,231,共4页Computer Engineering and Applications

基　　金：国家自然科学基金(No.60820106002);河北省高等学校自然科学基金(No.2011202)

摘　　要：在电阻层析成像系统中,激励模式和电极数目的设计直接影响到整个系统。为了提高重建图像质量,更好地指导ERT系统设计,对敏感场进行深入的分析是必要的。通过电磁场有限元仿真软件COMSOL,构建ERT的电极模型,通过对空场和离散介质场域的仿真研究,分析了各个因素对敏感场的影响,并对四种典型流型进行了图像重建。仿真实验表明,COMSOL图像重建效果满意,为图像重建的研究提供了新的思路。Optimal design of the motivation model and electrode number is important for the construction of the electrical resistance tomography system.It is necessary to analyze the distribution of the sensitivity field to guide design of ERT and improve the quality of the image reconstruction.An electrical model is established by using the software COMSOL.Through simulation study of the empty field and field with disperse phase,the factors affecting the distribution of the sensitivity field are analyzed,and the reconstruction images of four kinds of representative flow are achieved.The simulation experiments show that by COMSOL,the quality of reconstruction image is satisfactory,which provides the new idea for related image reconstruction.

关 键 词：电阻层析成像 COMSOL 仿真 图像重建 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]