Investigation on contact current and human body impedance at low- and intermediate-frewuency

采用精确人体模型计算的工频接触电流和人体电阻与另一数值数据吻合较好。然而，这一数值是实验测量值的两到三倍。实验测量了26名不同年龄（21-66岁）和bmi （16.1-41.4 kg/m2）的志愿者，测量值在550至800欧姆之间。结果表明，R随BMI的增大而减小，相对R沿电流路径的实测曲线与数值曲线吻合较好。心脏周围的接触电流集中到具有较高电导率的肺和心脏，其方向强烈依赖于接触场景。

Contact current and human body resistance calculated by using precise human model at power frequency showed good agreement with another numerical data. However, those are twice or three times higher than the experimental ones, ranging 550 to 800 ohms, measured for 26 volunteers with various ages (21-66 years old) and BMIs (16.1-41.4 kg/m2). It is found that R decreases as BMI increases, and that the measured profiles of relative R along the current path are in good agreement with the numerical ones. The contact current around the heart concentrates to the lung and heart that have relatively high conductivity, and its direction strongly depends on the contact scenarios.