人体肢体手势对先进医疗系统中人体电耦合通信的影响。
Effects of human limb gestures on galvanic coupling intra-body communication for advanced healthcare system.
作者信息
Chen Xi Mei, Pun Sio Hang, Zhao Jian Feng, Mak Peng Un, Liang Bo Dong, Vai Mang I
机构信息
State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Avenida da Universidade, Taipa, Macau, China.
Electrical and Computer Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China.
出版信息
Biomed Eng Online. 2016 May 26;15(1):60. doi: 10.1186/s12938-016-0192-z.
BACKGROUND
Intra-Body Communication (IBC), which utilizes the human body as the transmission medium to transmit signal, is a potential communication technique for the physiological data transfer among the sensors of remote healthcare monitoring system, in which the doctors are permitted to remotely access the healthcare data without interrupt to the patients' daily activities.
METHODS
This work investigates the effects of human limb gestures including various joint angles, hand gripping force and loading on galvanic coupling IBC channel. The experiment results show that channel gain is significantly influenced by the joint angle (i.e. gain variation 1.09-11.70 dB, p < 0.014). The extension, as well as the appearance of joint in IBC channel increases the channel attenuation. While the other gestures and muscle fatigue have negligible effect (gain variation <0.77 dB, p > 0.793) on IBC channel. Moreover, the change of joint angle on human limb IBC channel causes significant variation in bit error rate (BER) performance.
CONCLUSIONS
The results reveal the dynamic behavior of galvanic coupling IBC channel, and provide suggestions for practical IBC system design.
背景
体内通信（IBC）利用人体作为传输介质来传输信号，是一种用于远程医疗监测系统传感器之间生理数据传输的潜在通信技术，在该系统中医生可以远程访问医疗数据而不会干扰患者的日常活动。
方法
本研究调查了人体肢体姿势（包括各种关节角度、手握力和负载）对电耦合IBC通道的影响。实验结果表明，通道增益受关节角度的显著影响（即增益变化1.09 - 11.70 dB，p < 0.014）。IBC通道中关节的伸展以及出现会增加通道衰减。而其他姿势和肌肉疲劳对IBC通道的影响可忽略不计（增益变化<0.77 dB，p > 0.793）。此外，人体肢体IBC通道上关节角度的变化会导致误码率（BER）性能发生显著变化。
结论
研究结果揭示了电耦合IBC通道的动态行为，并为实际IBC系统设计提供了建议。
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