Effects of transmitter&amp;#x2019;s location on the signal loss of the human body communication

Hwang, Jung Hwan; Myoung, H.J.; Kang, Taewook; Kim, S.E.; Kim, J.K.; Hyoung, Chang‐Hee; Park, Hyung-Il; Lim, I.G.; Kim, J.B.; Kim, K.S.; Kang, Sangseung

doi:10.1109/aps.2008.4619700

“…Although many HBC systems have been proposed [22][23][24][25][26][27][28][29][30][31][32][33][34][35], the devices were mainly worn on arms and trunks. To widen the range of applications, we previously investigated the basic transmission mechanism of HBC between head-mounted wearable devices [36].…”

Section: Introductionmentioning

confidence: 99%

Transmission Analysis in Human Body Communication for Head-Mounted Wearable Devices

Muramatsu

¹

,

Sasaki

²

2021

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As society ages, wireless body area networks (WBANs) are expected to increasingly improve the quality of life of the elderly and disabled. One promising WBAN technology is human body communication (HBC), which utilizes part of the human body as a transmission medium. Communication between head-mounted wearable devices, such as hearing aids, is a potential HBC application. To clarify the HBC transmission mechanism between head-mounted wearable devices, this study analyzes the input impedance characteristics of the transceiver electrodes, transmission characteristics, and electric field distributions around and through a detailed head model. The investigation was performed via an electromagnetic field simulation. The signal frequency had less effect on the transmission characteristics and electric field distributions at 10, 20, and 30 MHz. However, the transmission mechanism between the head-mounted wearable devices was influenced by the number of electrodes in the transceiver. Moreover, the transmission characteristics between two-electrode transceivers were improved by impedance matching. Finally, the availability of the proposed system was evaluated from power consumption and human safety perspectives.

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“…Although many HBC systems have been proposed [22][23][24][25][26][27][28][29][30][31][32][33][34][35], the devices were mainly worn on arms and trunks. To widen the range of applications, we previously investigated the basic transmission mechanism of HBC between head-mounted wearable devices [36].…”

Section: Introductionmentioning

confidence: 99%

Human Body Communication with Head-Mounted Wearable Devices

Muramatsu¹,

Sasaki²

2021

Prime Archives in Electronics

0

View full text Add to dashboard Cite

As society ages, wireless body area networks (WBANs) are expected to increasingly improve the quality of life of the elderly and disabled. One promising WBAN technology is human body communication (HBC), which utilizes part of the human body as a transmission medium. Communication between head-mounted wearable devices, such as hearing aids, is a potential HBC application. To clarify the HBC transmission mechanism between head-mounted wearable devices, this study analyzes the input impedance characteristics of the transceiver electrodes, transmission characteristics, and electric field distributions around and through a detailed head model. The investigation was performed via an electromagnetic field simulation. The signal frequency had less effect on the transmission characteristics and electric field distributions at 10, 20, and 30 MHz. However, the transmission mechanism between the head-mounted wearable devices was influenced by the number of electrodes in the transceiver. Moreover, the transmission characteristics between two-electrode transceivers were improved by impedance matching. Finally, the availability of the proposed system was evaluated from power-consumption and human safety perspectives.

show abstract