Human body impedance for contact current measurement

摘要

The radio-frequency protection guidelines of Japan recommend the limits of contact current for contact hazard due to an ungrounded metallic object under an electromagnetic field. To arrange the standard measurement methods of contact current in Japan, the contact body impedances for Japanese adult male in the frequency range from 75 kHz to 15 MHz is obtained, and the simplified equivalent circuit is determined using nonlinear least squares method. In addition, the human body impedance is obtained from numerical simulation using the impedance method and a voxel human model, and compared with measured one.