WO2020145197A1 - Étiquette rfid, système d'alimentation électrique pour étiquette rfid, et procédé d'alimentation électrique pour étiquette rfid - Google Patents

Étiquette rfid, système d'alimentation électrique pour étiquette rfid, et procédé d'alimentation électrique pour étiquette rfid Download PDF

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Publication number
WO2020145197A1
WO2020145197A1 PCT/JP2019/051431 JP2019051431W WO2020145197A1 WO 2020145197 A1 WO2020145197 A1 WO 2020145197A1 JP 2019051431 W JP2019051431 W JP 2019051431W WO 2020145197 A1 WO2020145197 A1 WO 2020145197A1
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WO
WIPO (PCT)
Prior art keywords
rfid tag
power supply
battery
power
conductor layer
Prior art date
Application number
PCT/JP2019/051431
Other languages
English (en)
Japanese (ja)
Inventor
雅晃 平松
順康 尾崎
Original Assignee
雅晃 平松
長尾 俊行
小林 義夫
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 雅晃 平松, 長尾 俊行, 小林 義夫 filed Critical 雅晃 平松
Publication of WO2020145197A1 publication Critical patent/WO2020145197A1/fr

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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
    • G06K19/06—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
    • 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
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/48—Transceivers

Definitions

  • the present invention relates to an RFID (radio frequency identifier) tag or the like with an improved battery power supply system.
  • RFID tags are roughly classified into an active type in which a driving battery is mounted and a passive type having a function of converting energy of radio waves transmitted from an RFID writer into driving power (see Patent Documents 1 and 2). ).
  • the present invention provides an RFID tag capable of both increasing the capacity of a battery and speeding up the charging thereof, a power feeding system for the tag, and a power feeding method.
  • the RFID tag includes a communication antenna, a battery, a high-frequency circuit unit for reading and writing, and a substrate.
  • a communication antenna, a battery, and a high frequency circuit section are provided on the substrate.
  • This substrate is a multi-layer substrate.
  • a capacitor having a structure in which a dielectric layer is sandwiched between conductor layers from above and below is provided on the substrate as the battery. Further, the board is provided with a power supply unit for supplying power to the battery from the outside.
  • the power supply unit can freely supply power to the battery from outside without being restricted by the communication method. Will be possible.
  • the battery is a capacitor having a structure in which the dielectric layer is sandwiched between the first conductor layer and the second conductor layer, it is possible to speed up charging of the battery.
  • the RFID tag of the present invention solves the technical problem inherent in the conventional tag, and along with this, it becomes possible to greatly enhance the functionality and use of the tag.
  • the metal fine particles may be adhered over one surface on the first conductor layer and the second conductor layer in order to increase the effective area thereof.
  • the power supply unit may include a power supply coil for contactless power supply and a power supply circuit that rectifies the voltage generated at both ends of the coil and charges the battery with the voltage.
  • the feeding coil may be a thin film inductor created on the substrate.
  • the feeding coil can be created in the process of creating the multilayer substrate, the structure of the tag is simplified, and the cost of the tag itself is reduced accordingly. Will be possible.
  • the communication antenna can be a patch antenna having a plane layer ground.
  • the ground may be common to either the first conductor layer or the second conductor layer of the capacitor.
  • the RFID tag With the RFID tag with the above configuration, it is possible to create a feeding antenna in the process of creating a multilayer board.
  • the ground plane layer of the patch antenna is shared with either the first conductor layer or the second conductor layer of the battery, which simplifies the configuration of the tag. It is possible to reduce the cost of itself.
  • An RFID tag power supply system includes the RFID tag according to any one of the above aspects, and a power supply device that generates a magnetic field necessary for contactless power supply to the RFID tag by an electromagnetic induction method or a magnetic field resonance method. There is.
  • the tag since the RFID tag is provided, the tag can be charged at high speed, and in this respect, the original function of the RFID tag can be fully exerted. It will be possible. Moreover, since the magnetic field generated by the magnetism output from the power feeding device is wide, the power feeding device can feed a large number of RFID tags at one time.
  • the power feeding device is moved relative to the RFID tag, thereby feeding power to the RFID tag.
  • the tag since the RFID tag is used, the tag can be charged at high speed, and in this respect, the original function of the RFID tag can be fully exerted. become. Moreover, since the magnetic field generated by the magnetism output from the power feeding device is wide, the power feeding device can feed a large number of RFID tags at one time.
  • FIG. 1 is a schematic diagram of a power supply system according to an embodiment of the present invention, including a schematic perspective view of an RFID tag of the system.
  • FIG. 2 is a sectional view of the RFID tag taken along line 2-2 in FIG. 1. It is an electric block diagram of the IC chip of the RFID tag. It is a circuit block diagram of the electric power feeding part of the RFID tag. It is a circuit block diagram of the electric power feeder which comprises the same system.
  • the power supply system A given as an example includes an RFID tag 100 and a power supply device 200 that generates a magnetic field necessary for contactless power supply to the RFID tag 100 by a magnetic field resonance method.
  • reference numeral 300 in FIG. 1 denotes a read/writer device 300 that reads/writes data from/to the RFID tag 100 by non-contact communication.
  • the RFID tag 100 includes a circuit driving battery 140 and a substrate 110 provided with the battery 140.
  • the substrate 110 a multilayer substrate whose material is silicon single crystal or the like is used here.
  • the substrate 110 has an uppermost layer 111, a lowermost layer 112, a first conductor layer 141, a second conductor layer 143, and a dielectric layer 142.
  • the dielectric layer 142 has a first surface (upper surface in the drawing) and a second surface (lower surface in the drawing) opposite to the first surface.
  • the first conductor layer 141 and the second conductor layer 143 have a first surface (upper surface in the drawing) and a second surface (lower surface in the drawing) opposite to the first surface.
  • the battery 140 is provided between the uppermost layer 111 and the lowermost layer 112 of the substrate 110, the battery 140 may be provided at any position on the substrate 110.
  • the battery 140 is composed of a capacitor having a structure in which a dielectric layer 142 is sandwiched between a first conductor layer 141 and a second conductor layer 143.
  • the dielectric layer 142 is, for example, barium titanate or the like.
  • the first conductor layer 141 is, for example, a plane layer of copper or the like provided on the first surface of the dielectric layer 142.
  • the second conductor layer 143 is, for example, a plane layer of copper or the like on the second surface of the dielectric layer 142.
  • the first conductor layer 141 and the second conductor layer 143 are also referred to as capacitors' electrodes.
  • metal fine particles 1411 and 1431 are provided on one surface in order to increase the effective area of the capacitor electrode. It is good that it is attached over.
  • the metal fine particles 1411 and 1431 are metal particles having a particle diameter of about 200 to 2000 nm, and are made of the same material as the first conductor layer 141 and the second conductor layer 143.
  • the metal fine particles 1411 and 1431 are formed on the second surface of the first conductor layer 141 and the first surface of the second conductor layer 143 by controlling the particle diameter by sputtering or the like.
  • the number of particles laminated is about 5, and it is preferable that the particles are laminated to a thickness of about 1 ⁇ m to 2 ⁇ m. In this case, the effective area of the electrode of the capacitor can be increased several hundred times.
  • FIG. 2 schematically shows an example in which the number of laminated particles is one.
  • Buffer layers 1412 and 1432 of ZrO 2 or the like are formed on the first surface of the first conductor layer 141 and the second surface of the second conductor layer 143 in order to prevent a reaction with a silicon single crystal or the like forming the substrate 110. Has been done.
  • the buffer layers 1412 and 1432 can be omitted.
  • the amount of electric energy stored in the battery 140 can be further increased.
  • the material of the metal fine particles 1411 and 1431 can be different from the materials of the first conductor layer 141 and the second conductor layer 143.
  • the metal fine particles 1411 and 1431 may be made of a material (for example, a soft magnetic material such as an iron-cobalt alloy or a manganese oxide) whose magnetic resistance is extremely high at room temperature due to the colossal effect (super giant magnetoresistive effect). .. In this case, the amount of electric energy stored in the battery 140 can be further increased by the effect of collecting the magnetic field.
  • the RFID tag 100 further includes a power supply unit 150 for supplying power to the battery 140 from the outside.
  • the power feeding unit 150 may be provided inside the uppermost layer 111 of the substrate 110, but is not limited to this.
  • the power supply unit 150 is connected to the input stage of the battery 140, as shown in FIG.
  • the power feeding section 150 has a power feeding coil 151 for contactless power feeding by a magnetic field resonance method, and a power supply circuit 152.
  • the power feeding coil 151 is a thin film inductor stacked in a plane lattice and spiral shape in the uppermost layer 111 (only one layer is schematically shown in FIG. 2 ), and a conductor portion 1511 made of copper or the like. And a dielectric portion 1512 made of ceramic or the like that covers the conductor portion 1511.
  • the power supply circuit 152 is configured to rectify the voltage generated by electromagnetic induction across the power supply coil 151 and charge the battery 140 with the voltage (see FIG. 4). That is, the power supply circuit 152 is configured to convert the electric power received through the power feeding coil 151 into a voltage to charge the battery 140 and output the voltage discharged from the battery 140 as the output voltage ⁇ .
  • the power supply circuit 152 rectifies and stabilizes a resonance capacitor 1521 connected in parallel to the power feeding coil 151 and a parallel resonance voltage of the power feeding coil 151 and the capacitor 1521, and charges the battery 140 with the voltage.
  • the power supply circuit main body 1522 can be included.
  • a capacitor may be connected in series to the power feeding coil 151.
  • the RFID tag 100 further includes a communication antenna 120 provided on the substrate 110.
  • the communication antenna 120 is a patch antenna having a conductor 121 and a ground of a plane layer (so-called solid ground).
  • the conductor portion 121 of the communication antenna 120 is patterned in the central portion of the upper surface of the uppermost layer 111 of the substrate 110, but it can be provided in any layer of the substrate 110. is there.
  • the ground is made common to either one of the first conductor layer 141 and the second conductor layer 143. That is, the entire surface of one conductor layer serves as the ground.
  • the antenna frequency is assumed to be 13.56 MHz, 860 to 960 MHz, 2.4 GHz or the like, but a frequency band lower than this is possible.
  • the communication antenna 120 may be a spiral antenna or the like instead of the patch antenna.
  • the RFID tag 100 further includes a read/write IC chip 130 (corresponding to a high frequency circuit section) provided on the substrate 110.
  • the IC chip 130 may be surface-mounted around the communication antenna 120, but is not limited to this.
  • the circuit configuration of the IC chip 130 will be described below with reference to FIG.
  • the IC chip 130 has a receiver 131, a memory 133, a transmitter 132, a power supply unit 135, a control unit 134, and a capacitor 136.
  • the receiver 131 is configured to receive the antenna signal output from the communication antenna 120, extract the data included in the signal, and output the data.
  • the memory 133 is configured to record the data output from the receiver 131 and the like.
  • the transmitter 132 is configured to convert the data read from the memory 133 into an antenna signal and output the antenna signal to the communication antenna 120.
  • the capacitor 136 is connected to the power supply unit 135.
  • the power supply unit 135 is configured to extract the power included in the antenna signal output from the communication antenna 120 and charge the capacitor 136. Further, the power supply unit 135 is connected to the output stage of the battery 140, and the output voltage ⁇ of the battery 140 is input.
  • the power supply unit 135 further has a configuration for generating a power supply voltage V DD based on the voltage discharged from the capacitor 136 and/or the voltage ⁇ of the battery 140.
  • the generated power supply voltage V DD is supplied to each circuit for driving the circuit of the RFID tag 100.
  • the control unit 134 is configured to process a predetermined program, control each unit, and read/write data to/from the memory 133.
  • the IC chip 130 has the same basic configuration as an existing passive IC chip, except that the output voltage ⁇ of the battery 140 is input to the power supply unit 135 in addition to the output voltage of the capacitor 136. There is.
  • the power feeding device 200 includes a coil 240 that generates a magnetic field required for contactless power feeding, a resonance capacitor 230 that is connected in parallel to the coil 240, and a reference having a frequency of 10 kHz or higher.
  • the configuration includes an oscillating unit 210 that generates a signal, and a driving unit 220 that generates a driving current according to the reference signal and causes the coil 240 to excite the driving current.
  • the power feeding coil 151 of the power feeding unit 150 receives the magnetic field output from the power feeding device 200. Then, the RFID tag 100 is contactlessly supplied with electric power. As a result, the function of the tag 100 can be fully exerted.
  • the RFID tag 100 when power is supplied when the RFID tag 100 is read/written using the power supply device 200, it may be integrated with the read/writer device 300 or placed near the device 300. In addition, when power is supplied to a large number of RFID tags 100 at a time, it is preferable to attach them to a moving body or the like that moves near the RFID tags 100.
  • the power feeding apparatus 200 can freely perform the communication without restriction. It becomes possible to supply power.
  • the battery 140 is the capacitor having the above structure, it is possible to achieve a large capacity and high speed charging.
  • the entire structure of the RFID tag 100 is simple, it is possible to reduce the cost of the RFID tag 100. Therefore, the RFID tag 100 solves the technical problem inherent in the conventional tag, and along with this, it becomes possible to greatly enhance the functionality and use of the tag.
  • the RFID tag 100 since the RFID tag 100 is provided, the RFID tag 100 can be charged at high speed and sufficiently, and in this respect, the original function of the RFID tag 100 is sufficient. It will be possible to make full use of it. Further, since the magnetic field due to magnetism output from the power feeding apparatus 200 is wide, the power feeding apparatus 200 can also feed a large number of RFID tags 100 at one time.
  • the power supply method of the RFID tag according to the present invention has the same technical features and effects as the system A.
  • the RFID tag according to the present invention is not limited to the above-described embodiment, and can be applied to an IC tag or an IC card having the tag built therein, and of course not only a passive type but also an active type or a semi-active type. Is applicable to.
  • the power supply system of the RFID tag according to the present invention is arbitrary, and may be a contact power supply system as well as a non-contact power supply system.
  • the shape and/or material of the pattern of the coil or the like formed in the substrate of the communication antenna of the present invention does not matter.
  • the communication antenna of the present invention may be formed on the surface of the substrate, and the design may be changed appropriately according to the communication frequency and the like.
  • the communication antenna of the present invention has a structure in which an antenna component such as a spiral antenna is mounted on a substrate, or the component is attached to the outside of the substrate and the antenna wire is electrically connected to a communication circuit on the substrate. It may be configured.
  • the battery of the present invention may be in a form in which the electric power included in the signal received through the communication antenna is charged together with the electric power received through the power feeding unit.
  • the battery may be used in place of the existing battery or used together with the existing battery.
  • one layer of the multilayer substrate may be divided into a plurality of areas and these may be connected in series/parallel, or they may be respectively provided in a plurality of layers and connected in series/parallel through through-hole electrodes or the like. ..
  • the high-frequency circuit unit of the present invention may be formed by embedding the IC chip in the substrate instead of mounting the IC chip on the surface of the substrate.
  • the power supply unit of the present invention may be any structure that externally supplies electric power to the battery, and may be a structure that performs non-contact power supply by an electromagnetic induction method. That is, the power feeding method of the power feeding unit of the present invention is arbitrary. For example, when the power feeding unit of the present invention is contactlessly fed by the electric field coupling method, the power feeding unit can be configured by a capacitor electrode for electric field coupling provided in the substrate or on the substrate surface. On the other hand, when the power feeding unit of the present invention is contact-powered, the power feeding unit can be configured by terminals or electrodes for power input provided on the surface of the substrate.
  • a RFID tag power supply system 100 RFID tag 110 Substrate 111 Uppermost layer 112 Lowermost layer 120 Communication antenna 130 IC chip (high frequency circuit section) 140 battery (capacitor) 141 First conductor layer (ground) 142 Dielectric Layer 143 Second Conductor Layer 1411, 1431 Metal Fine Particles 150 Feeding Unit 151 Feeding Coil 152 Power Supply Circuit 200 Feeding Device 300 Lead/Writer Device

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Waveguide Aerials (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention ‌a‌ ‌pour‌ ‌objet‌ d'obtenir à la fois une plus grande capacité de batterie et une augmentation de la vitesse de charge de la batterie. À cet effet, l'invention porte sur une étiquette RFID 100 qui est pourvue d'une antenne de communication 120, d'une batterie 140 et d'une puce CI 130 sur un substrat 110. Le substrat 110 est un substrat multicouche. Un condensateur ayant une structure dans laquelle une couche diélectrique 142 est prise en sandwich depuis le dessus et le dessous respectivement par une première couche conductrice 141 et une seconde couche conductrice 143 est disposée sur le substrat 110 en tant que batterie 140. En outre, le substrat 110 est pourvu d'une unité d'alimentation 150 pour fournir de l'énergie à la batterie 140 depuis l'extérieur.
PCT/JP2019/051431 2019-01-07 2019-12-27 Étiquette rfid, système d'alimentation électrique pour étiquette rfid, et procédé d'alimentation électrique pour étiquette rfid WO2020145197A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019000680A JP6664042B1 (ja) 2019-01-07 2019-01-07 Ｒｆｉｄタグ、同タグの給電システム及び給電方法
JP2019-000680 2019-02-26

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WO2020145197A1 true WO2020145197A1 (fr) 2020-07-16

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PCT/JP2019/051431 WO2020145197A1 (fr) 2019-01-07 2019-12-27 Étiquette rfid, système d'alimentation électrique pour étiquette rfid, et procédé d'alimentation électrique pour étiquette rfid

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WO (1) WO2020145197A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS636258B2 (fr) * 1980-01-17 1988-02-09 Kuraray Co
JPH0513111A (ja) * 1991-07-02 1993-01-22 Mitsubishi Electric Corp 電子機器
JP2003259570A (ja) * 2002-03-06 2003-09-12 Seiko Epson Corp 電気光学装置、電気エネルギー供給方法、動作ユニットの駆動方法、その駆動方法を用いた装置、動作ユニットの駆動回路、表示ユニットの駆動方法、その駆動方法を用いた装置、表示ユニットの駆動回路及び電子機器
JP2011249669A (ja) * 2010-05-28 2011-12-08 Kanji Shimizu 電気エネルギー蓄積装置
JP2012141871A (ja) * 2011-01-05 2012-07-26 Toppan Printing Co Ltd 非接触通信媒体及び通信方法
JP2013138404A (ja) * 2011-11-29 2013-07-11 Panasonic Corp 伝送コイル及び携帯無線端末
JP2014096612A (ja) * 2012-11-07 2014-05-22 Sony Corp アンテナモジュール、情報通信装置及び情報通信システム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6112383B2 (ja) * 2012-06-28 2017-04-12 パナソニックＩｐマネジメント株式会社 携帯端末
JP6306258B1 (ja) * 2017-09-20 2018-04-04 誠敏 中野 Ｉｃタグシステム

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS636258B2 (fr) * 1980-01-17 1988-02-09 Kuraray Co
JPH0513111A (ja) * 1991-07-02 1993-01-22 Mitsubishi Electric Corp 電子機器
JP2003259570A (ja) * 2002-03-06 2003-09-12 Seiko Epson Corp 電気光学装置、電気エネルギー供給方法、動作ユニットの駆動方法、その駆動方法を用いた装置、動作ユニットの駆動回路、表示ユニットの駆動方法、その駆動方法を用いた装置、表示ユニットの駆動回路及び電子機器
JP2011249669A (ja) * 2010-05-28 2011-12-08 Kanji Shimizu 電気エネルギー蓄積装置
JP2012141871A (ja) * 2011-01-05 2012-07-26 Toppan Printing Co Ltd 非接触通信媒体及び通信方法
JP2013138404A (ja) * 2011-11-29 2013-07-11 Panasonic Corp 伝送コイル及び携帯無線端末
JP2014096612A (ja) * 2012-11-07 2014-05-22 Sony Corp アンテナモジュール、情報通信装置及び情報通信システム

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