Study on the Transmission Mechanism for Wearable Device Using the Human Body as a Transmission Channel

  title={Study on the Transmission Mechanism for Wearable Device Using the Human Body as a Transmission Channel},
  author={Katsuyuki Fujii and Masaharu Takahashi and Koichi Ito and Keisuke Hachisuka and Yusuke Terauchi and Yoshinori Kishi and Ken Sasaki and Kiyoshi Itao},
  journal={IEICE Trans. Commun.},
Recently, wearable devices which use the human body as a transmission channel have been developed. However, there has been a lack of information related the transmission mechanism of such devices in the physical layer. Electro-magnetic communication trials using human body as transmission media have more than a decade's history. However, most of the researches have been conducted by researchers who just want to utilize the fact and practically no physical mechanisms have been researched until… 

Electric Field Distributions of Wearable Devices Using the Human Body as a Transmission Channel

The authors propose some calculation models of the human body equipped with the wearable devices by using the finite difference time domain (FDTD) method and a biological tissue-equivalent solid phantom is utilized to show the validity of the calculation.

Study on the electric field distributions around whole body model with a wearable device using the human body as a transmission channel

In the near future, we will begin to attach wearable devices, and we will meet the ubiquitous computing society in Weiser, M. However, currently there are little methods for these personal devices to

Modeling and Electrodes Design for Human Body Communication in Head-Mounted Wearable Devices

It was found that the transmission mechanism between head-mounted wearable devices is influenced by the number of electrode of transceiver, and impedance matched transceiver was designed for improving the transmission characteristics.

Clarification of transmission mechanism in Human body communication between head-mounted wearable devices with detailed model

Facing an aging society, body area network (BAN) is expected to play a greater role in improving a quality of life of the elderly and people with disabilities Human body communication (HBC) which

Transmission Analysis in Human Body Communication for 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 to clarify the HBC transmission mechanism between head-mounted wearable devices.

Electric Field Distributions Generated by a Wearable Device Using Simplified Whole Human Body Models

The Finite Difference Time Domain (FDTD) method was used to calculate the Efield distributions around simple and realistic models of the whole human body in free space with a weareble device, and it was shown clearly that the E-field distribution is not mostly different from when a body is floating infree space.

Development and Investigation of the Transmission Mechanism of the Wearable Devices Using the Human Body as a Transmission Channel

  • K. ItoK. Fujii
  • Computer Science
    IEEE International Workshop on Antenna Technology Small Antennas and Novel Metamaterials, 2006.
  • 2006
Although many studies have been made on the development of wearable devices using the human body as a transmission channel, little is known about the transmission mechanism of such devices in the physical layer.

Study on the electromagnetic field distributions of realistic Japanese adult male and female models with a wearable device using the human body as a transmission channel

The realistic high resolution whole-body model of Japanese adult male and female with average height and weight is used and most part of the electric field is concentrated around the tip of the arm, so the transmission system using the human body as a transmission channel has advantage for the practical use.

Input impedance analysis of a human body communication transmitter using a realistic human model and a simplified layered model

The input impedance characteristics of transmitter electrodes were investigated through a three-dimensional electromagnetic field analysis for improving transmission characteristics between devices by impedance matching and revealed that skin, fat and muscle are the main body tissues that determine the input impedance characteristic of electrodes.

Investigation of on-body Bluetooth transmission

An investigative study to characterise the electromagnetic transmission between a body-mounted Bluetooth headset antenna and a mobile phone handset antenna to demonstrate the importance of surface waves in the on-body Bluetooth transmission.



A very low-power consumption wireless ECG monitoring system using body as a signal transmission medium

A very low-power consumption wireless system for monitoring ECG (electrocardiogram) is proposed. It consists of an ECG detector/transmitter located on the chest and the relay transmitter placed at

A near-field-sensing transceiver for intra-body communication based on the electro-optic effect

This paper describes a near-field-sensing transceiver for intrabody communication, in which the human body is the transmission medium. The key component of the transceiver is an electric-field sensor

Personal area networks (PAN) : near-field intra-body communication

PAN is a wireless communication system that allows electronic devices on and near the human body to exchange digital information through near-field electrostatic coupling using on-off keying with quadrature detection to reduce stray interference and increase receiver sensitivity.

“Body coupled FingerRing”: wireless wearable keyboard

A really wearable input device “FingeRing” is developed for coming wearable PDAs, and a new symbol coding method that combines order and chord typing is proposed, and useful typing patterns are chosen by typing speed evaluations.

Wearable key: device for personalizing nearby environment

A new network technology between keys and keyholes that enables digital information to be carried through a person's body based on a near-field technology the authors call TouchNet is developed.

The Computer for the Twenty-First Century

A study on the calculation model for signal distribution of wearable devices using human body as a transmission channel

  • IEICE Trans. Commun. (Japanese Edition), vol.J87-B, no.9, pp.1383–1390, Sept. 2004.
  • 2004

A study on the receiving signal level in relation with the location of electrodes for wearable devices using human body as a transmission channel

  • K. FujiiK. ItoS. Tajima
  • Computer Science
    IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450)
  • 2003
This paper proposes calculation models of the transmitter and the receiver attached to the arm using the FDTD method and compared the calculated received signal levels to the measured ones by using the biological tissue-equivalent phantom with die transmitters and receiver.

Development of the communication module used human body as the transmission line

  • Proc. Human Interface Symposium 2001, pp.389–392, 2001.
  • 2001