WO2010074420A2 - Système et méthode de communication utilisant le corps humain comme antenne dans un réseau de zone corporelle - Google Patents

Système et méthode de communication utilisant le corps humain comme antenne dans un réseau de zone corporelle Download PDF

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Publication number
WO2010074420A2
WO2010074420A2 PCT/KR2009/007189 KR2009007189W WO2010074420A2 WO 2010074420 A2 WO2010074420 A2 WO 2010074420A2 KR 2009007189 W KR2009007189 W KR 2009007189W WO 2010074420 A2 WO2010074420 A2 WO 2010074420A2
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WO
WIPO (PCT)
Prior art keywords
human body
receiving
transmitting
communications
communications system
Prior art date
Application number
PCT/KR2009/007189
Other languages
English (en)
Other versions
WO2010074420A3 (fr
Inventor
Jung-Hwan Hwang
Kyung-Soo Kim
Jung-Bum Kim
In-Gi Lim
Chang-Hee Hyoung
Hyung-Il Park
Sung-Eun Kim
Tae-Wook Kang
Hey-Jin Myoung
Kyung-Hwan Park
Seok-Bong Hyun
Byoung-Gun Choi
Tae-Young Kang
Sung-Weon Kang
Original Assignee
Electronics And Telecommunications Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020090055585A external-priority patent/KR20100075353A/ko
Application filed by Electronics And Telecommunications Research Institute filed Critical Electronics And Telecommunications Research Institute
Priority to US13/140,412 priority Critical patent/US20110250837A1/en
Priority to CN2009801523009A priority patent/CN102449923A/zh
Priority to JP2011543411A priority patent/JP5380548B2/ja
Publication of WO2010074420A2 publication Critical patent/WO2010074420A2/fr
Publication of WO2010074420A3 publication Critical patent/WO2010074420A3/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
    • H04B13/005—Transmission systems in which the medium consists of the human body

Definitions

  • the present invention relates to a communications system and method using a part of human body as an antenna in a body area network, and more particularly, to a communications system and method enabling wireless communications using a low frequency band without the use of a bulky antenna in such a manner that a transmitting-side communications device applies electrical signals to a human body via a transmitting-side coupler to allow a part of human body to act as an antenna, and electrical signals, occurring in another part of human body due to radio frequency (RF) signals, are transferred to a receiving-side communications device via a receiving-side coupler.
  • RF radio frequency
  • PDAs personal digital assistants
  • cellular phones cellular phones
  • portable medical devices In order to transmit and receive a variety of data between these portable devices, a network is established in an area surrounding a human body, and such a network is defined as a body area network.
  • a data transmission method used in this body area network may be a wired transmission method using cables and a wireless transmission method using radio frequency (RF) waves.
  • the wired transmission method provides the advantages of data security and rapid transmission speeds, but it requires the carrying of wire devices such as cables.
  • the wireless transmission method provides for convenient data transmission, but wireless channels are greatly influenced by a human body itself or human body movement. That is, a human body that is a dielectric body having very high wave loss properties is located in wireless channels between communications devices in the body area network, so signal loss is very high. Also, line of sight and non-line of sight wireless channels are repeatedly formed between communications devices according to human body movement, so signal loss variation across the wireless channels can be extremely high, thereby causing difficulties in stable channel construction.
  • a low frequency band needs to be used.
  • the low frequency band is advantageous over a high frequency band in that it features a reduction in the loss of RF waves caused by the human body and a reduction in signal loss variation caused by human body movement due to weak wave linearity.
  • the size of an antenna required for wireless transmissions tends to be proportional to the wavelength of a utilized frequency, so that in the case of the use of the low frequency band, a very large-sized antenna is required. Disclosure of Invention
  • An aspect of the present invention provides a communications system and method using a part of human body as an antenna in a body area network.
  • the communications system and method enables wireless communications using a low frequency band without the use of a bulky antenna in such a manner that a transmitting- side communications device applies electrical signals to a human body via a transmitting-side coupler to allow a part of human body to act as an antenna, and electrical signals, occurring in another part of human body due to radio frequency (RF) signals, are transferred to a receiving-side communications device via a receiving-side coupler.
  • RF radio frequency
  • a communications system using a part of human body as an antenna in a body area network including: transmitting-side and receiving- side communications devices transmitting and receiving data signals via wireless transmissions; transmitting-side and receiving-side couplers transferring the data signals between the transmitting-side and receiving-side communications devices and a human body; and transmitting-side and receiving-side impedance matching devices implementing impedance matching between the transmitting-side and receiving- side communications devices and the transmitting-side and receiving-side couplers.
  • the transmitting-side communications device may apply transmission data signals in the form of electrical signals to the human body via the transmitting-side coupler to allow the electrical signals to flow through one side of the human body, and radio frequency waves may be radiated from the one side of the human body into the atmosphere.
  • the receiving-side communications device may receive electrical signals, occurring in the other side of the human body due to the radio frequency waves radiated from the one side of the human body, via the receiving-side coupler.
  • the transmitting-side and receiving- side couplers may be configured as signal electrodes to transfer the data signals. Also, the transmitting-side and receiving- side couplers may further include respective ground electrodes connected to a ground of the transmitting-side and receiving-side communications devices.
  • the transmitting-side and receiving- side couplers may or may not contact the human body.
  • the transmitting- side and receiving- side couplers may be separately formed outside the transmitting- side and receiving- side communications devices to directly contact the human body when the transmitting-side and receiving-side couplers contact the human body.
  • the transmitting-side and receiving-side couplers may be included inside the transmitting-side and receiving-side communications devices, respectively, when the transmitting-side and receiving-side couplers do not contact the human body.
  • the transmitting-side and receiving- side impedance matching devices may be differently configured on the basis of variable impedance according to whether the transmitting-side and receiving-side couplers contact the human body or do not contact the human body.
  • a communications method using a part of human body as an antenna in a body area network including: applying, by a transmitting-side communications device, transmission data signals in the form of electrical signals to a human body via a transmitting-side coupler to allow electrical signals to flow through one side of the human body; radiating radio frequency waves from the one side of the human body flowing through the electrical signals into the atmosphere; and receiving, by a receiving- side communications device, electrical signals, occurring in the other side of the human body due to the radio frequency waves radiated from the one side of the human body, via a receiving-side coupler.
  • a part of human body is used as an antenna during wireless communications between the transmitting-side and receiving-side communications devices, thereby establishing stable wireless channels using a low frequency band without the use of a bulky antenna.
  • the impedance matching devices provided between the transmitting-side and receiving- side communications devices and the transmitting-side and receiving-side couplers, allow impedance, which is variable according to whether the transmitting- side and receiving-side couplers contact the human body or not, to be matched, thereby reducing signal loss.
  • FIG. 1 schematically illustrates a communications system using a part of human body as an antenna in a body area network according to an exemplary embodiment of the present invention
  • FIG. 2 illustrates a detailed configuration for a communications system using a part of human body as an antenna in a human area network according to an exemplary embodiment of the present invention
  • FIG. 3 is a graph illustrating the input impedance of couplers when the couplers contact a human body and when the couplers do not contact the human body in a communications system using a part of human body as an antenna. Best Mode for Carrying out the Invention
  • FIG. 1 schematically illustrates a communications system using a part of human body as an antenna in a human area network according to an exemplary embodiment of the present invention.
  • a human body has conductivity, albeit of a low level. This conductivity may allow the human body to be used as an antenna for wireless transmissions.
  • a transmitting-side communications device 10 applies electrical signals to one side of a human body 30, the electrical signals 1 flow through the human body 30. Accordingly, a part of human body 30 radiates radio frequency (RF) waves 2 into the atmosphere, thereby acting as a transmitting-side antenna.
  • RF radio frequency
  • the electrical signals 3 flow through the human body 30 and are transmitted to a receiving- side communications device 20, whereby the part of human body 30 acts as a receiving- side antenna.
  • the transmitting-side and receiving-side communications devices 10 and 20 forming the body area network enable the part of human body 30 to act as the antenna, thereby implementing wireless communications without a separate antenna apparatus.
  • FIG. 2 illustrates a detailed configuration for a communications system using a part of human body as an antenna in a human area network according to an exemplary em- bodiment of the present invention.
  • the communications system includes the transmitting-side and receiving-side communications devices 10 and 20, transmitting- side and receiving-side couplers 11 and 21 included in the transmitting-side and receiving- side communications devices 10 and 20, respectively, and impedance matching devices 12 and 22 for impedance matching between the transmitting-side and receiving- side couplers 11 and 21 and the transmitting-side and receiving- side communications devices 10 and 20.
  • the communications devices 10 and 20 are wireless communications devices transmitting and receiving data using a wireless transmission method.
  • the communications devices 10 and 20 may vary irrespective of device types under the condition that communications devices, such as personal digital assistants (PDAs), cellular phones, and medical devices, can establish the body area network.
  • PDAs personal digital assistants
  • the communications devices 10 and 20 are divided into the transmitting-side and receiving- side communications devices 10 and 20 for convenience of explanation, but they have the same function in view of data transmission.
  • the couplers 11 and 21 transfer transmission and reception data signals in the form of electrical signals between the communications devices 10 and 20 and the human body 30.
  • the couplers 11 and 21 are divided into the transmitting-side and receiving- side couplers 11 and 21 for convenience of explanation, but they have the same function.
  • the transmitting-side communications device 10 applies transmission data signals in the form of electrical signals to the human body 30 via the transmitting-side coupler 11.
  • the receiving-side communications device 20 receives reception data signals in the form of electrical signals flowing through the human body via the receiving- side coupler 21.
  • the transmitting-side and receiving- side couplers 11 and 21 may be configured as signal electrodes, and they may contact the human body or may not contact the human body.
  • FIG. 3 illustrates the input impedance of couplers when the couplers contact a human body and when the couplers do not contact the human body in the communications system using the part of human body as the antenna.
  • the transmitting-side and receiving-side couplers 11 and 21 have a low impedance value when they contact the human body as compared to when they do not contact the human body, due to the high dielectric properties of the human body.
  • the present invention includes the impedance matching devices 12 and 22 between the transmitting-side and receiving-side communications devices 10 and 20 and the transmitting-side and receiving-side couplers 11 and 21.
  • the impedance matching devices 12 and 22 may be configured to be suitable for respective impedance, whereby the transmitting-side and receiving- side couplers 11 and 21 may apply stronger signals to the human body 30 and receive them from the human body 30 when they do not contact the human body as well as when they contact the human body.
  • the couplers 11 and 21 contact the human body 30, they may be configured to add ground electrodes 13 and 23 connected to a ground of the communications devices 10 and 20 as well as signal electrodes serving to transfer data signals.
  • strong signals flow through the human body between the signal electrodes and the ground electrodes. That is, signal strength becomes strong as compared to when the couplers 11 and 21 are configured as only the signal electrodes. Therefore, stronger signals may be applied to the human body 30 or received therefrom.
  • couplers 11 and 21 need to contact the human body 30, they may be separately formed outside the communications devices 10 and 20. However, when the couplers 11 and 21 do not need to contact the human body 30, they may be formed inside the communications devices 10 and 20.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Near-Field Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un système et une méthode de communication utilisant le corps humain comme antenne dans un réseau corporel, et plus particulièrement sur un système et une méthode de communication permettant des communications sans fil sur bande basse fréquence sans devoir utiliser d'antenne volumineuse, de manière à ce qu'un dispositif de communication côté émission applique des signaux électriques au corps humain via un coupleur côté émission permettant d'utiliser une partie du corps humain comme antenne, et à ce que des signaux électriques produits dans une autre partie du corps sous l'effet de signaux RF soient transférés à un dispositif de communication côté réception par l'intermédiaire d'un coupleur côté réception.
PCT/KR2009/007189 2008-12-24 2009-12-03 Système et méthode de communication utilisant le corps humain comme antenne dans un réseau de zone corporelle WO2010074420A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US13/140,412 US20110250837A1 (en) 2008-12-24 2009-12-03 Communications system and method using a part of human body as an antenna in a body area network
CN2009801523009A CN102449923A (zh) 2008-12-24 2009-12-03 在体域网中使用人体一部分作为天线的通信系统和方法
JP2011543411A JP5380548B2 (ja) 2008-12-24 2009-12-03 人体通信において、人体の一部をアンテナとして使用する通信システム及び方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20080133596 2008-12-24
KR10-2008-0133596 2008-12-24
KR10-2009-0055585 2009-06-22
KR1020090055585A KR20100075353A (ko) 2008-12-24 2009-06-22 인체영역 네트워크에서 인체의 일부를 안테나로 이용하는 통신 시스템 및 방법

Publications (2)

Publication Number Publication Date
WO2010074420A2 true WO2010074420A2 (fr) 2010-07-01
WO2010074420A3 WO2010074420A3 (fr) 2011-10-06

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060052056A1 (en) * 2004-09-07 2006-03-09 Park Duck G Communication apparatus and method using human body as medium
WO2007123343A1 (fr) * 2006-04-21 2007-11-01 Electronics And Telecommunications Research Institute Procédé de communication associé à un corps humain qui utilise un procédé de modulation à supports multiples
EP1953934A1 (fr) * 2007-02-01 2008-08-06 Emma Mixed Signal C.V. Système de communication RF utilisant le corps humain comme une antenne

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060052056A1 (en) * 2004-09-07 2006-03-09 Park Duck G Communication apparatus and method using human body as medium
WO2007123343A1 (fr) * 2006-04-21 2007-11-01 Electronics And Telecommunications Research Institute Procédé de communication associé à un corps humain qui utilise un procédé de modulation à supports multiples
EP1953934A1 (fr) * 2007-02-01 2008-08-06 Emma Mixed Signal C.V. Système de communication RF utilisant le corps humain comme une antenne

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
'Body Area Network. Datasheet' FRAUNHOFER GESELLSCHAFT, [Online] 2002, Retrieved from the Internet: <URL:http://www.ban.fraunhofer.de/ban.pdf> [retrieved on 2011-07-25] *
ZIMMERMAN, T.G. ET AL.: 'Applying Electric Field Sensing to Human-Computer Interfaces' MIT MEDIA LABORATORY - PHYSICS AND MEDIA GROUP. CHI '95 PROCEEDINGS OF THE SIGCHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS. 1995, NEW YORK, NY, USA, *

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WO2010074420A3 (fr) 2011-10-06

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