IEEE J Biomed Health Inform. 2014 Jul;18(4):1196-206. doi: 10.1109/JBHI.2014.2301165.
Intrabody Communication (IBC) is a technique that uses the human body as a transmission medium for electrical signals to connect wearable electronic sensors and devices. Understanding the human body as the transmission medium in IBC paves way for practical implementation of IBC in body sensor networks. In this study, we propose a model for galvanic coupling-type IBC based on a simplified equivalent circuit representation of the human upper arm. We propose a new way to calculate the electrode-skin contact impedance. Based on the model and human experimental results, we discuss important characteristics of galvanic coupling-type IBC, namely, the effect of tissues, anthropometry of subjects, and electrode configuration on signal propagation. We found that the dielectric properties of the muscle primarily characterize the received signal when receiver electrodes are located close to transmitter electrodes. When receiver and transmitter electrodes are far apart, the skin dielectric property affects the received signal.
体内通信（IBC）是一种利用人体作为电信号传输介质的技术，用于连接可穿戴电子传感器和设备。在 IBC 中，将人体视为传输介质，为在身体传感器网络中实际实现 IBC 铺平了道路。在这项研究中，我们提出了一种基于简化的人体上臂等效电路表示的基于电流耦合的 IBC 模型。我们提出了一种计算电极-皮肤接触阻抗的新方法。基于该模型和人体实验结果，我们讨论了电流耦合型 IBC 的重要特性，即组织、受试者体型和电极配置对信号传播的影响。我们发现，当接收电极靠近发射电极时，接收信号主要由肌肉的介电特性决定。当接收电极和发射电极相距较远时，皮肤介电特性会影响接收信号。
