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Microsystem Technologies

, Volume 11, Issue 8–10, pp 1020–1027 | Cite as

Intra-body data transmission for the personal area network

  • Keisuke Hachisuka
  • Teruhito Takeda
  • Yusuke Terauchi
  • Ken Sasaki
  • Hiroshi Hosaka
  • Kiyoshi Itao
Technical paper

Abstract

Intra-body communication is a wireless means of exchanging information within a personal area network (PAN) between wearable electronic sensors and devices. The feasibility of intra-body communication is confirmed through several experiments on signal propagation within the human body, and a human phantom is designed and used to obtain reproducible results over repeated experiments. Based on the results of these experiments, a prototype transmission system is constructed using aluminum electrodes powered by 3 V DC and operating in the 10.7 MHz frequency modulation (FM) band. This prototype is demonstrated to be capable of transmitting analog signals through the human subjects in the presence of external noise. Digital data transmission at 9600 bps is also achieved using newly fabricated 10.7 MHz frequency shift keying (FSK) transmitter and receiver devices. The carrier frequency of 10.7 MHz is the intermediate frequency of FM radio receivers, meaning that the proposed system can make use of a wide selection of inexpensive, commercial radio frequency devices.

Keywords

Personal area network Intra-body communication Frequency modulation Human phantom Wearable 

References

  1. Doi K, Hashimoto M, Koyama M, Suzuki Y, Nishimura A (2001) Japan patent 2001-308803Google Scholar
  2. Hachisuka K, Nakata A, Takeda T, Shiba K, Sasaki K, Hosaka H, Itao K (2003) Development of wearable intra-body communication devices. SensActuators A Phys 105:109–115Google Scholar
  3. Handa T, Shoji S, Ike S, Takeda S, Sekiguchi T (1997) A very low-power consumption wireless ECG monitoring system using body as a signal transmission medium. In: International conference on solid-state sensors and actuators, Chicago, Illinois, USA, pp 1003–1006Google Scholar
  4. International Commission on Non-Ionizing Radiation Protection (1998) Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz). Health Phys 74:494–522PubMedGoogle Scholar
  5. Koshiji K (2001) Characteristics of electromagnetic wave propagation on human skin (in Japanese). Nat Interface 1:46Google Scholar
  6. Matsushita N, Tajima S, Ayatsuka Y, Rekimoto J (2000) Wearable key: device for personalizing nearby environment. In: The 4th international symposium on wearable computers (ISWC 2000), Seattle, Washington, USA, pp 119–126Google Scholar
  7. Zimmerman TG (1995) Personal area networks (PAN): near-field intrabody communication. MS thesis, MIT Media LaboratoryGoogle Scholar
  8. Zimmerman TG (1996) Personal area networks: near-field intrabody communication. IBM Syst J 35:609–617Google Scholar

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Keisuke Hachisuka
    • 1
  • Teruhito Takeda
    • 1
  • Yusuke Terauchi
    • 1
  • Ken Sasaki
    • 1
  • Hiroshi Hosaka
    • 1
  • Kiyoshi Itao
    • 1
  1. 1.Institute of Environmental Studies, Graduate School of Frontier SciencesThe University of TokyoTokyoJapan

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