Human body communication between fingertip and wrist using stationary and wearable devices

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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Information Select and Transfer Between Touch Panel and Wearable Devices Using Human Body Communication

Human-Computer Interaction: Interaction Technologies - Lecture Notes in Computer Science ◽

10.1007/978-3-319-20916-6_20 ◽

2015 ◽

pp. 208-216 ◽

Cited By ~ 1

Author(s):

Yuto Kondo ◽

Shin Takahashi ◽

Jiro Tanaka

Keyword(s):

Human Body ◽

Wearable Devices ◽

Touch Panel ◽

Human Body Communication

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Touch-Based Dual-Band System Combined Human Body Communication and Wireless LAN for Wearable Devices

Electronics ◽

10.3390/electronics8030335 ◽

2019 ◽

Vol 8 (3) ◽

pp. 335

Author(s):

Kunho Park ◽

Jong Baek ◽

Se Kim ◽

Min Jeong ◽

Youn Kim

Keyword(s):

Human Body ◽

High Speed ◽

Local Area Network ◽

Band System ◽

Transparent Electrode ◽

Wearable Devices ◽

Physical Contact ◽

Dual Band ◽

Area Network ◽

Human Body Communication

A touch-based dual-band system (TBDB), in which human body communication (HBC) and wireless local area network (WLAN) are combined to provide an intuitive service, is proposed. The proposed system can connect the network between devices using HBC, and the data is transmitted via WLAN. The network setup is configured within 100 ms through HBC by simply touching the devices to be connected. Subsequently, data is transmitted at high-speed through the WLAN at a data rate of 54 Mbps. Security is advantageous as HBC technology transmits data through physical contact. The TBDB system can provide a system suitable for wearable devices by combining the advantages of HBC with intuitive service and WLAN at a high transfer rate. A transparent electrode that is adaptable to various display panels is used instead of a metal electrode. The proposed TBDB system using the transparent electrode demonstrates a reliable and intuitive video streaming service between a server and a client, simply by touching the devices. The proposed system can be used between most electronic devices, such as smartphones, tablet PCs, and TVs, owing to the intuitive network connection by touch.

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