KR20080079835A - An elastic sensor useing rfid tag of non-electric power - Google Patents

An elastic sensor useing rfid tag of non-electric power Download PDF

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Publication number
KR20080079835A
KR20080079835A KR1020070020348A KR20070020348A KR20080079835A KR 20080079835 A KR20080079835 A KR 20080079835A KR 1020070020348 A KR1020070020348 A KR 1020070020348A KR 20070020348 A KR20070020348 A KR 20070020348A KR 20080079835 A KR20080079835 A KR 20080079835A
Authority
KR
South Korea
Prior art keywords
rfid tag
sensor
antenna
stretch
rfid
Prior art date
Application number
KR1020070020348A
Other languages
Korean (ko)
Inventor
김영민
오승돈
Original Assignee
김영민
오승돈
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
Application filed by 김영민, 오승돈 filed Critical 김영민
Priority to KR1020070020348A priority Critical patent/KR20080079835A/en
Publication of KR20080079835A publication Critical patent/KR20080079835A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/02—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine
    • G06K19/025—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine the material being flexible or adapted for folding, e.g. paper or paper-like materials used in luggage labels, identification tags, forms or identification documents carrying RFIDs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0716—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising a sensor or an interface to a sensor
    • G06K19/0717—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising a sensor or an interface to a sensor the sensor being capable of sensing environmental conditions such as temperature history or pressure
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)

Abstract

The present invention relates to a stretchable sensor using a non-powered RFID tag, and more particularly, by using a sensor that transmits and receives a signal by separating the RFID tag and the antenna and connecting to a switch that senses deformation of the sensor. The present invention relates to a stretchable sensor using a non-powered RFID tag that can detect deformation.

In the stretch sensor including an RFID tag for storing the identifier and data of the stretch sensor of the present invention, and an RFID reader and an antenna for transmitting and receiving the signal of the RFID tag, which is applied to the surface to which the stretch sensor is attached. A flexible sensing switch for electrically connecting the RFID tag and the antenna by using an elastic force that is deformed by an external force and is restored to its original state when the external force is released, and the RFID tag, the antenna, and the elastic sensing switch It is characterized by including an elastic housing including therein.

Description

An elastic sensor useing RFID tag of non-electric power}

1 is a block diagram of an RFID reader and a stretch sensor using the RFID in accordance with an embodiment of the present invention,

2 is a block diagram of a stretchable sensor using a non-powered RFID tag according to an embodiment of the present invention,

3 is an embodiment of a stretch sensor using a non-powered RFID tag according to an embodiment of the present invention,

Figure 4 is another embodiment of a stretch sensor using a non-powered RFID tag in accordance with an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

110: RFID reader 210: RFID tags

220: stretch detection switch 230: antenna

The present invention relates to a stretchable sensor using a non-powered RFID tag, and more particularly, to a sensor that separates the RFID tag from the antenna and detects deformation of the sensor, and electrically connects the RFID tag to the antenna to transmit and receive a signal. The present invention relates to a stretchable sensor using a non-powered RFID tag that can detect deformation of a human body or building infrastructure.

The existing RFID tag is divided into active type (active type) and passive type (passive type), and the active type requires a separate power source, but the passive type does not need a separate power source. Generally, a power source for signal generation and processing is required to operate the sensor.

In the case of a sensor using a battery, the sensor may be stopped due to battery consumption or a cost may be incurred by replacing the battery. When the battery is used, the battery is supplied with a battery or a wire. There is a problem in that it is complicated to install and difficult to supply power.

The present invention is to solve the problems of the prior art, it is an object to attach a sensor to the infrastructure or the human body of the building to detect the deformation of the surface when an external force is applied to prevent accidents.

In addition, the present invention has another object that can be used without restriction of the place by using the passive ID tag of the RFID, the cost of using and installing the battery by transmitting and receiving data wirelessly without a battery.

An object of the present invention is a telescopic sensor comprising an RFID tag for storing the identifier and data of the telescopic sensor and an RFID reader and an antenna for transmitting and receiving the signal of the RFID tag, the surface on which the elastic sensor is attached A flexible sensing switch for electrically connecting the RFID tag and the antenna by using an elastic force that is deformed by an external force applied and restored to the original state when the external force is released, and the RFID tag, the antenna and the telescopic extension It is achieved by a telescopic sensor using a non-powered RFID tag that includes an elastic housing that includes a sensing switch therein.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a block diagram of an RFID reader and a stretch sensor using the RFID in accordance with an embodiment of the present invention. Referring to FIG. 1, the RFID reader reader 110 and the stretchable sensors 100-1 to 100-n are configured, and the RFID reader reader 110 includes the stretched sensor 100-1 to 100-n with a predetermined time. When the signal is transmitted to, the stretching sensors 100-1 to 100-n transmit a response signal corresponding thereto to the RFID reader 110 to communicate.

When expansion occurs due to an external force applied to the surface on which the elastic sensors 100-1 to 100-n are attached, the antenna and the RFID tag included in the elastic sensors 100-1 to 100-n are elastically detected. The RFID tag and antenna are disconnected as they are shorted to the switch. The RFID reader 110 transmits a signal to the expansion and contraction sensors 100-1 to 100-n over a predetermined time period, and the response signal corresponding to the transmitted signal is not received. Detect that the surface to which 100-n) is attached is deformed.

When the stretch detection switch of the stretch sensors 100-1 to 100-n is short-circuited with the RFID tag and the antenna, the surface on which the stretch sensors 100-1 to 100-n are attached is applied with an external force. When shrinkage occurs, the antenna and the RFID tag included in the stretch sensors 100-1 to 100-n are switched with the stretch sensing switch to electrically connect the antenna and the RFID tag. The RFID reader 110 transmits a signal to the expansion and contraction sensors 100-1 to 100-n for a predetermined time, and when the response signal corresponding to the transmitted signal is transmitted to the RFID reader 110, the RFID ID. The reader 110 detects that the surface on which the stretch sensor is attached is deformed by receiving the response signal.

2 is a block diagram of a stretchable sensor using a non-powered RFID tag according to an embodiment of the present invention. 2, the stretchable sensor includes a housing 200, an RFID tag 210, a stretch detection switch 220, and an antenna 230, and the RFID tag 210 includes an RF transmitter 211 and RF. The receiver 212 includes a rectifier circuit 213, a storage unit 214, and a controller 215.

The housing 200 includes an RFID tag 210, a stretch detection switch 220, and an antenna 230. The housing 200 may be deformed due to an external force on the surface, and may be deformed when the external force is terminated. It includes the elastic force to return to.

The RFID tag 210 is an RF transmitter 211 for transmitting a signal to an RFID reader in a passive manner in which an identifier and data of a stretchable sensor are stored, and an RF receiver 212 receiving a signal from the RFID reader. A rectifier circuit 213 for generating power by rectifying the signal received from the RFID reader and supplying the generated power, a storage unit 214 for storing the identifier and data of the flexible sensor, and an RF transmitter 211 of the RFID tag. ), A control unit 215 for controlling the RF receiver 212, the rectifier circuit 213, and the storage unit 214.

The stretch detection switch 220 is attachable to the surface, consisting of a moving part made of a flexible material such as silicone or rubber, and an antenna, RF ID tag and the connection of the stretch detection switch to switch, the connection is When the force is applied, it is deformed, and when the external force is released, it is made of a metallic material with elastic force that is restored to its original state.

The antenna 230 is a device for transmitting and receiving signals of the RFID reader and RFID tags 210, and has a predetermined length, and is preferably designed to have a half-wave or quarter-wavelength in a dipole form. This includes, but is not limited to, design.

When the stretch detection switch 220 is switched with the RFID tag 210 and the antenna 230, the RFID tag 210 and the antenna 230 are electrically connected to each other and an external force is applied to the stretch sensing switch ( When the surface to which the 220 is attached is expanded, the antenna 230 and the RFID tag 210 are short-circuited while the connection portion of the stretch detection switch 220 is also expanded. The antenna 230 cannot transmit a signal received from the RFID reader to the RFID tag 210 and does not transmit a response signal corresponding thereto to the RFID reader, so the RFID reader that has not received the response signal Detects the surface on which the stretch sensor is attached.

In addition, when the RFID tag 210 and the antenna 230 and the stretch detection switch 220 is short-circuited, when an external force is applied and the surface on which the stretch detection switch 220 is attached contracts, the stretch detection switch ( As the connection portion 220 contracts, the RFID tag 210 and the antenna 230 are switched. The antenna 230 may be electrically connected to the RFID tag 210 to allow the antenna 230 to receive a signal transmitted from the RFID reader, and transmit a response signal corresponding thereto to the RFID reader. Detects the deformation of the surface to which the telescopic sensor is attached.

Figure 3 is an embodiment of a stretch sensor using a non-powered RFID tag in accordance with an embodiment of the present invention. Referring to Figure 3, one side of the elastic housing 300 of the elastic sensor 300 is provided with a passive RFID tag 330 for storing the identifier and data, the other side of the antenna 340 consisting of a predetermined length at a predetermined interval Are spaced apart. Moved below the spaced side is attached to the stretch detection switch connecting portion 320 and the connecting portion of the metal material is changed in shape by a predetermined external force that electrically connects the RFID tag 330 and the antenna 340 It is composed of a portion (310).

When an external force is applied to both sides of the housing 300 of the stretch sensor in a state in which the connection part 320 of the stretch detection switch is short-circuited with the RFID tag 330 and the antenna 340, the movable part of the stretch detect switch As the moving unit 310 is delivered to the 310 and the moving unit 310 is compressed, the connection unit 320 of the stretch detection switch connected to the moving unit is switched with the RFID tag 330 and the antenna 340, and the RFID tag 330 is provided. And antenna 340 are electrically connected.

The RFID tag 330 electrically connected to the antenna 340 receives a signal transmitted from the RFID reader for a predetermined time, and receives a response signal corresponding thereto to the RFID reader, so that the RFID reader is a flexible sensor. Detects the attached surface is deformed.

4 is another embodiment of a stretchable sensor using a non-powered RFID tag according to an embodiment of the present invention. Referring to FIG. 4, a passive RFID tag 430 for storing an identifier and data is provided at one side of the elastic housing 400 of the flexible sensor, and an antenna 440 having a predetermined length is provided at the other side at predetermined intervals. Are spaced apart. The movement is attached to the expansion and contraction switch connecting portion 420 of the metallic material that is changed in shape by a predetermined external force that electrically connects the RFID tag 430 and the antenna 440 to the spaced lower side. It consists of a part 410.

The connection portion 420 of the stretch detection switch is electrically connected to the RFID tag 430 and the antenna 440, and the stretch detection switch is applied when a force pulled to both sides of the housing 400 of the stretch sensor is applied. The moving part 410 of the moving part 410 is pulled while the RFID tag 430 and the antenna 440, the connection part 420 of the stretch detection switch that was switched with the moving part 410 do. Therefore, the RFID tag 430 and the antenna 440 which are electrically connected by the connection part 420 of the stretch detection switch are short-circuited.

The RFID reader, which sends a signal to the RFID tag 430 over a predetermined time, does not receive a response corresponding to the signal, so the RFID reader detects that the surface on which the stretch sensor is attached is deformed.

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

Therefore, the stretchable sensor using the non-powered RFID tag of the present invention has an advantage of preventing an accident by detecting a change in the surface by external force using the RFID tag.

In addition, by using the RFID tag of the passive type, there is a remarkable and advantageous effect that it can be used without restriction of the place by using the battery and the cost of installing and transmitting data wirelessly without the battery. .

Claims (3)

In the stretch sensor including an RFID tag for storing the identifier and data of the stretch sensor and the RFID reader and an antenna for transmitting and receiving the signal of the RFID tag, A stretch sensing switch for electrically connecting the RFID tag and the antenna by using an elastic force that is deformed by an external force applied to the surface to which the stretch sensor is attached and is restored to its original state when the external force is released; An elastic housing including the RFID tag, the antenna, and the flexible sensing switch therein Stretch sensor using a non-powered RFID tag including a. The method of claim 1, The RFID tag is a stretchable sensor using a non-powered RFID tag using a passive method. The method of claim 1, wherein the stretch detection switch, A moving part for attaching to a surface where deformation occurs by the external force; Metallic connecting portion having elastic force for electrically connecting the antenna and RFID tag Stretch sensor using a non-powered RFID tag including a.
KR1020070020348A 2007-02-28 2007-02-28 An elastic sensor useing rfid tag of non-electric power KR20080079835A (en)

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Application Number Priority Date Filing Date Title
KR1020070020348A KR20080079835A (en) 2007-02-28 2007-02-28 An elastic sensor useing rfid tag of non-electric power

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Application Number Priority Date Filing Date Title
KR1020070020348A KR20080079835A (en) 2007-02-28 2007-02-28 An elastic sensor useing rfid tag of non-electric power

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KR20080079835A true KR20080079835A (en) 2008-09-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130061858A (en) * 2011-12-02 2013-06-12 한국전자통신연구원 Radio recognition powerless sensor tag system and operation method
CN103983967A (en) * 2014-05-22 2014-08-13 重庆大学 Multi-target micro-distortion time-sharing telemetering method and system
US10603564B2 (en) 2018-01-03 2020-03-31 Universal City Studios Llc Interactive component for an amusement park

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130061858A (en) * 2011-12-02 2013-06-12 한국전자통신연구원 Radio recognition powerless sensor tag system and operation method
CN103983967A (en) * 2014-05-22 2014-08-13 重庆大学 Multi-target micro-distortion time-sharing telemetering method and system
US10603564B2 (en) 2018-01-03 2020-03-31 Universal City Studios Llc Interactive component for an amusement park
US11130038B2 (en) 2018-01-03 2021-09-28 Universal City Studios Llc Interactive component for an amusement park

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