摘要
根据频散理论构建单阶Cole-Cole模型,以人体组织电参数测量值为依据,基于最小二乘法获得对应组织的单阶Cole-Cole模型,并将各组织电参数模型计算值与测量值进行对比分析。利用修正系数法获得猪组织电参数的单阶Cole-Cole模型,并将通过模型获得的50 Hz频率时猪组织的电参数加载至ANSYS平台建立的符合解剖学结构的猪三维模型,研究通过猪电学模型的触电电流。结果表明:人体组织电参数模型计算值与测量值间的平均相对误差在6%以内;60组触电仿真电流与课题组触电物理实验获得的电流比较,左前肢-左后肢和左前肢-右后肢触电路径的平均相对误差分别为3.5%和3.2%,验证了单阶Cole-Cole模型研究低频条件下生物组织介电特性的可行性。
According to the dispersion theory,a single-order Cole-Cole model was constructed.Based on the measured electrical parameters of human tissues,the corresponding single-order Cole-Cole model was obtained based on the least square method,and the calculated values of each tissue electrical parameter model were compared with the measured ones.Electrical parameters of pig tissues at 50 Hz were loaded into the three-dimensional model which was built on the ANSYS platform,and the electric shock current through the pig electrical model was studied.The results show that the average relative error between the calculated value and the measured one of human tissue electrical parameter model is within 6%;the average relative error of the electric shock simulation current of 60 groups is 3.5%and 3.2%respectively.Compared with the electric shock physical experiment of the subject group,the feasibility of single-order Cole-Cole model to study the dielectric properties of biological tissues under low frequency is verified.
作者
王海杨
李春兰
张亚飞
罗杰
张继召
WANG Haiyang;LI Chunlan;ZHANG Yafei;LUO Jie;ZHANG Jizhao(College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China;College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300071, China)
出处
《中国科技论文》
CAS
北大核心
2020年第3期328-335,共8页
China Sciencepaper
基金
国家自然科学基金资助项目(51467021)。
关键词
介电特性
单阶Cole-Cole模型
最小二乘法
电学模型
触电仿真
dielectric properties
single-order Cole-Cole model
least squares method
electrical model
electric shock simulation
