AI Article Synopsis
- Human Body Communication (HBC) is a new method for connecting devices on or in the body that uses much less energy compared to traditional radio frequency methods.
- This study measures and classifies the communication characteristics between devices in 14 different scenarios, focusing on how the types of devices (wearable vs. machine) affect the communication.
- Results indicate that wearable-to-wearable interactions experience the highest signal loss, while wearable-to-machine and machine-to-machine interactions have significantly lower loss, with certain configurations proving better for different distances in communication.
Article Abstract
Human Body Communication (HBC) has recently emerged as an alternative to radio frequency transmission for connecting devices on and in the human body with order(s) of magnitude lower energy. The communication between these devices can give rise to different scenarios, which can be classified as wearable-wearable, wearable-machine, machine-machine interactions. In this paper, for the first time, the human body channel characteristics is measured for a wide range of such possible scenarios (14 vs. a few in previous literature) and classified according to the form-factor of the transmitter and receiver. The effect of excitation/termination configurations on the channel loss is also explored, which helps explain the previously unexplained wide variation in HBC Channel measurements. Measurement results show that wearable-wearable interaction has the maximum loss (upto -50 dB) followed by wearable-machine and machinemachine interaction (min loss of 0.5 dB), primarily due to the small ground size of the wearable devices. Among the excitation configurations, differential excitation is suitable for small channel length whereas single ended is better for longer channel.
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| http://dx.doi.org/10.1109/EMBC.2018.8513332 | DOI Listing |
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