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目的针对人体组织复合结构及生物组织电导率的频率特性,建立人体组织物理模型。方法根据电磁理论,通过提出的导体分层数值算法得到组织在激励电流作用下电流场分布模型,并在Matlab平台上模拟仿真。结果获得了在不同频率激励电流作用下人体复合结构横截面的电流密度分布情况。结论从仿真的角度验证了在高频电流信号作用下人体组织复合结构中存在着趋肤效应现象,从而为生物阻抗测量技术的改进提供基础数据。
Objective To establish the physical model of human tissue according to the frequency structure of the composite structure of human tissue and the conductivity of biological tissue. Methods According to the electromagnetic theory, the current field distribution model under the action of excitation current is obtained through the proposed numerical algorithm of conductor stratification and the simulation is carried out on the Matlab platform. Results The current density distribution of the cross section of the human body composite under different excitation currents was obtained. Conclusion From the simulation point of view, the phenomenon of skin effect exists in human tissue composite structure under the action of high frequency current signal, which provides the basic data for the improvement of bioimpedance measurement technology.