WO2020080208A1 - Étiquette rf, système d'étiquette rf, dispositif de lecture de structure et système de lecture de structure - Google Patents

Étiquette rf, système d'étiquette rf, dispositif de lecture de structure et système de lecture de structure Download PDF

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Publication number
WO2020080208A1
WO2020080208A1 PCT/JP2019/039735 JP2019039735W WO2020080208A1 WO 2020080208 A1 WO2020080208 A1 WO 2020080208A1 JP 2019039735 W JP2019039735 W JP 2019039735W WO 2020080208 A1 WO2020080208 A1 WO 2020080208A1
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WO
WIPO (PCT)
Prior art keywords
tag
coil
hole
transmission
antenna
Prior art date
Application number
PCT/JP2019/039735
Other languages
English (en)
Japanese (ja)
Inventor
詩朗 杉村
Original Assignee
株式会社フェニックスソリューション
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 株式会社フェニックスソリューション filed Critical 株式会社フェニックスソリューション
Priority to JP2020553101A priority Critical patent/JPWO2020080208A1/ja
Publication of WO2020080208A1 publication Critical patent/WO2020080208A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • 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

Definitions

  • the present invention relates to an RF tag, an RF tag system, a structure reading device, and a structure reading system.
  • RFID Radio Frequency Identification
  • the RF tag used in the RFID system has an antenna and an IC chip stored therein.
  • the carrier wave transmitted from the reader / writer antenna is received by the RF tag antenna and the identification data etc. recorded in the IC chip is reflected. It is a mechanism that carries on waves and returns to the reader / writer for contactless communication.
  • Patent Document 1 (Re-Table WO2015 / 068347), an RF tag provided with a tag transmission unit that electromagnetically couples with a line in a managed article placement region, a signal transmission unit provided in the line, An article management system using a spiral antenna that electromagnetically couples with a signal transmission unit and an RFID reader that sends a transmission signal to a line via the spiral antenna and receives a response signal output from the tag transmission unit via the line is provided.
  • a spiral antenna that electromagnetically couples with a signal transmission unit and an RFID reader that sends a transmission signal to a line via the spiral antenna and receives a response signal output from the tag transmission unit via the line is provided.
  • Patent Document 2 Japanese Unexamined Patent Application Publication No. 2017-157068 discloses an RF tag that can be attached to a member made of a conductor having an internal void and has high communication performance. .
  • Patent Document 3 Japanese Unexamined Patent Publication No. 2017-158073 discloses a director that enables communication even when a conductor exists between the reader / writer and the RF tag.
  • Patent Document 4 Japanese Unexamined Patent Publication No. 2016-115873 discloses a key management device that can reliably manage keys and can easily exchange and add keys.
  • Patent Document 5 Japanese Unexamined Patent Application Publication No. 2018-170673 discloses a key management that integrally manages a high-priced, high-security pass lock and an RF tag (Radio Frequency tag) that functions as a key used by a person with low security. A device is disclosed.
  • Patent Document 6 Japanese Patent Laid-Open No. 2016-183553
  • a key management device capable of reducing waste is disclosed.
  • Patent Document 7 Japanese Patent Laid-Open No. 2003-193717 discloses a key provided with a non-contact recording medium that improves the communication efficiency of the IC tag and enables accurate communication of the IC tag information. And a safer lock management system.
  • Patent Document 8 (Re-Table WO2017 / 047505) is a key for inserting and unlocking by inserting into a keyhole of a lock, and has a grip portion and a shaft portion extending from the grip portion and having a key mountain.
  • a key body, and a notch portion is provided on the tip side of the shaft portion opposite to the grip portion, and a coil antenna in which at least a part of the outer periphery is arranged along the inner periphery in the notch portion,
  • a key with a wireless communication device in which a wireless communication device having an RFIC element connected to a coil antenna is housed in a notch is disclosed.
  • the structure having the hole there is a place where the communication radio wave of the RF reader cannot reach.
  • it is a keyhole described in Patent Document 7 or 8.
  • the IC chip is provided on the key itself, but if the key is lost, the merit of the IC tag will not work.
  • the key is lost, the key type is unknown, and it is necessary to replace all around the key hole, which is a problem because it takes a lot of cost and time.
  • the structure reading device is configured by using the existing keyhole, it is necessary to arrange a small RF tag at the hole bottom of the keyhole or in the vicinity of the hole bottom later.
  • the antenna of the RF tag is arranged.
  • the winding axis of the coil is not always constant, and when the spiral coil described in Patent Document 1 is used as the antenna coil, communication with the structure reading device may occur depending on the direction and position of the winding axis of the antenna coil. There was a problem that it would be impossible.
  • a main object of the present invention is to stably communicate with a reader when a small RF tag is arranged at or near the hole bottom of a keyhole, regardless of the direction of the winding axis of the antenna coil of the RF tag. It is to provide a small RF tag capable of performing the above.
  • a second object of the present invention is to provide a structure reading device and a structure reading system capable of communicating with an RF tag placed at or near a hole bottom where transmission / reception radio waves of an RF reader cannot pass. Is.
  • An RF tag includes a rectangular parallelepiped-shaped insulating base material, metal wiring on a first surface of the insulating base material, metal wiring on a second surface facing the first surface, and on the first surface.
  • the coil is configured by connecting a first coil and a second coil having a common winding axis in series, and the shortest distance between the first coil and the second coil is a rectangular parallelepiped. It is an RF tag that is 0.5 to 0.7 times the length of the shortest side.
  • the antenna coil of the RF tag By arranging the antenna coil of the RF tag as described above, not only when the winding axis of the antenna coil of the RF tag and the winding axis of the antenna coil of the structure reading device are parallel to each other, but also of the antenna coil of the RF tag. Even when the winding axis and the winding axis of the antenna coil of the reading device are orthogonal to each other, the first coil and / or the second coil of the RF tag deviates from the center of the winding axis of the antenna coil of the reading device, and the reading is performed.
  • the magnetic flux generated in the antenna coil of the device passes through the inside of the first coil and / or the second coil of the RF tag, which enables communication between the RF tag and the structure reading device.
  • An RF tag according to a second aspect of the present invention is the RF tag according to one aspect, wherein the insulating base material has a cubic shape.
  • the RF tag when inserting a small RF tag at or near the hole bottom of the keyhole, the RF tag can be reliably inserted regardless of the orientation of the RF tag.
  • An RF tag according to a third aspect of the present invention is the RF tag according to one aspect of the second aspect, wherein the first coil and the second coil of the RF tag are electromagnetic induction type and are coupled to an antenna of the RF tag reader. ing.
  • An RF tag according to a fourth aspect of the present invention is the RF tag according to one aspect of the present invention, further including a third coil having a winding axis intersecting with the winding axes of the first coil and the second coil, and An RF tag including a fourth coil, wherein the third coil and the fourth coil are connected in series between the first coil and the second coil.
  • the antenna of the RF tag is provided with two types of coils whose winding axes intersect each other and are connected in series, and the first coil and the second coil, or the third coil and the fourth coil. It is more likely that the winding axis of any of the coils of (1) and the winding axis of the antenna coil of the reading device will be nearly parallel, and communication sensitivity will be improved. In addition, even when the winding axes of the first coil and the second coil and the winding axes of the third coil and the fourth coil are both orthogonal to the winding axis of the antenna coil of the reader.
  • the winding axes of the first coil and the second coil and the winding axes of the third coil and the fourth coil are orthogonal to each other.
  • An RF tag according to a fifth aspect of the invention is the RF tag according to one aspect of the fourth aspect, wherein the insulating base material is ceramic.
  • the via processing accuracy can be increased, the RF tag can be made smaller, the heat resistance is high, and it can be used even at high temperatures.
  • An RF tag according to a sixth aspect of the present invention is the RF tag according to any one aspect of the fifth aspect, wherein the length of one side of the insulating base material is 0.8 mm or more and 1.2 mm or less.
  • the RF tag becomes smaller, and it becomes possible to insert the RF tag into the bottom of small holes such as key holes.
  • An RF tag according to a seventh aspect is the RF tag according to the first aspect to the sixth aspect, in which a cavity for accommodating an IC chip is provided on the first surface of the insulating base material.
  • the height of the surface of the IC chip from the surface of the insulating base material becomes low, and damage to the IC chip can be avoided.
  • An RF tag according to an eighth aspect of the present invention is the RF tag according to one aspect to the seventh aspect, in which an insulating film is provided on at least the metal wiring on the first surface and the metal wiring on the second surface, and the surface of the IC chip. It is the formed RF tag.
  • the insulating film functions as a protective material for metal wiring and IC chips.
  • An RF tag system is an RF tag system including the RF tag according to any one of claims 1 to 8 and the RF tag reader.
  • a structure reading device is the RF tag according to any one of claims 1 to 8, which is provided at or near a hole bottom of a hole of a structure having a hole, and the hole. And an insertion member that can be partially inserted into the insertion member, the insertion member having a first transmission / reception antenna provided at a distal end portion and a second transmission / reception antenna provided at a proximal end portion, and the first transmission / reception antenna.
  • a transmission line is formed between the antenna and the second transmitting / receiving antenna.
  • the RF reader cannot communicate with the RF tag provided on the far side of the hole, the bottom of the hole, or the vicinity of the hole bottom, but a part of the insertion member (first transmitting / receiving antenna) is placed in the hole.
  • the RF reader can transmit and receive with the RF tag via the first transmitting / receiving antenna, the transmission line, and the second transmitting / receiving antenna outside the hole.
  • the RF tag according to the eighth aspect of the invention as the RF tag, when a small RF tag is arranged at or near the hole bottom of the keyhole, the winding axis of the antenna coil of the RF tag can be Communication between the RF tag and the structure reading device can be stably performed regardless of the direction.
  • the structure reading apparatus according to an eleventh invention is the structure reading apparatus according to the tenth invention, wherein the first transmitting / receiving antenna has a shape insertable into the hole, and the second transmitting / receiving antenna has a hole.
  • the structure may be made of a metal that cannot be inserted into the structure.
  • the first transmitting / receiving antenna is inserted into the hole of the structure made of metal, and the second transmitting / receiving antenna is arranged outside the hole. Since the first transmission / reception antenna and the second transmission / reception antenna are connected by the transmission line, the RF reader should communicate with the RF tag from the second transmission / reception antenna via the transmission line and the first transmission / reception antenna. You can
  • a structure reading device is the structure reading device according to the tenth invention or the eleventh invention, wherein the transmission line may be a microstrip line.
  • the transmission line is a microstrip line, it can be easily manufactured and used in a wide frequency range. By using the microstrip line, it is possible to support a wide range of frequencies. Further, as the transmission line, other than the microstrip line, any system such as a coplanar line (waveguide), a coaxial line, a strip line, and a slot line can be adopted. Although depending on the structure of the antenna, the size of the antenna portion for impedance matching can be formed in the range of 1 mm or more and 5 mm or less. However, handling or operability can be improved by setting the size of the insertion member to be inserted into the hole of the structure reading device to be larger than the size of the antenna portion.
  • a structure reading device is the structure reading device according to the tenth invention to the twelfth invention, wherein the hole may be a key hole.
  • the hole is the key hole
  • the use of the insertion member allows the recording of the RF tag provided from the outside of the key hole to the inside of the key hole. The information can be read.
  • a structure reading system includes the structure reading device according to any one of claims 10 to 13 and an RF reader capable of communicating with an RF tag.
  • the signal from the RF reader can be given to the RF tag via the insertion member, and the information of the RF tag can be returned to the RF reader via the insertion member.
  • a structure reading system according to a fifteenth invention is the structure reading system according to the fourteenth invention, wherein the RF reader is connected to the RF tag via the second transmission / reception antenna, the transmission line, and the first transmission / reception antenna. You may communicate.
  • the first transmitting / receiving antenna When the RF tag is attached to the bottom of the hole, the vicinity of the bottom of the hole, or the back side of the hole, the first transmitting / receiving antenna is inserted into the hole, and the second transmitting / receiving antenna receives the signal from the RF reader and the transmission line is connected. Via the first transmitting / receiving antenna. As a result, the first transmitting / receiving antenna can transmit and receive with the RF tag. Therefore, by attaching the RF tag to the bottom of the hole, information on the structure having the hole can be obtained.
  • a structure reading system according to a sixteenth invention is the structure reading system according to the fourteenth invention or the fifteenth invention, wherein an RF reader capable of communicating with the RF tag communicates encrypted information. Good.
  • the RF tag and the RF reader in the structure reading system can encrypt the information to be communicated.
  • the key type can be recognized by the keyhole insertion member and the RF reader.
  • the RF tag and the RF reader in the keyhole reading system can encrypt the information to be communicated, only the key maker can easily manage the information.
  • FIG. 3 is a schematic perspective view of the RF tag according to the first embodiment as viewed from above. It is the typical top view which looked at the RF tag concerning a 1st embodiment from the upper part.
  • FIG. 3 is a schematic plan view of the RF tag according to the first embodiment as viewed from below. It is the typical top view which looked at the RF tag concerning a 2nd embodiment from the upper part. It is the typical top view which looked at the RF tag concerning a 2nd embodiment from the lower part.
  • FIG. 3 is a schematic cross-sectional view showing a state where the structure reading device including the RF tag according to the first embodiment is inserted into a structure.
  • an RF tag 700 includes a substantially cubic insulating base material 10, metal wiring 60 on a first surface of the insulating base material, and a metal on a second surface facing the first surface.
  • An RF tag 700 of an electromagnetic induction system including an IC chip 80 arranged, wherein a coil is configured by connecting a first coil 20 and a second coil 30 having a common winding axis in series.
  • the shortest distance between the first coil and the second coil is 0.5 to 0.7 times the length of one side of the cube. 1 to 3, one output of the IC chip 80 is connected to one end of the first coil 20, the other end of the first coil 20 is connected to one end of the second coil 30, and the second coil 30 is connected.
  • the other end of is connected to the other output of the IC chip 80.
  • the first coil 20 and the second coil 30 are connected by the connection line 25.
  • the RF tag 700 Due to the change in the magnetic flux inside the first coil 20 or the second coil 30, a current flows through the coil and is input to the IC chip 80. Furthermore, since the shortest distance between the first coil 20 and the second coil 30 is 0.5 to 0.7 times the length of one side of the cube, and the two coils are arranged apart from each other, the RF tag 700 In the case where the winding axis of the coil and the winding axis of the coil of the RF tag reader coincide with each other, for example, the winding axis of the coil of the RF tag 700 and the winding axis of the coil of the RF tag reader are orthogonal to each other. Even in such a case, the magnetic flux inside either one of the first coil 20 and the second coil 30 changes, so that the RF tag 700 and the RF tag reader can communicate with each other.
  • FIG. 6 is a diagram showing an example of a usage pattern of the RF tag 700.
  • the RF tag 700 is arranged in the hole 610 of the structure 600 and faces the first transmitting / receiving antenna 110 of the insertion member 100.
  • the winding axes of the first coil and the second coil of the RF tag 700 are orthogonal to the winding axis of the first transmitting / receiving antenna 110.
  • FIG. 7 shows the magnetic flux of the transmitting / receiving antenna 115 in the substantially cubic RF tag of the present invention when the winding axis of the coil of the RF tag and the winding axis of the transmitting / receiving antenna 115 are common and orthogonal. It is a schematic drawing. In FIG. 7, it is clear that the magnetic flux of the transmitting / receiving antenna 115 passes through the inside of the coil of the RF tag when the winding axis of the coil of the RF tag and the winding axis of the transmitting / receiving antenna 115 are common.
  • the distance between the first coil 20 and the second coil 30 is large, so that The magnetic flux passes through at least one of the first coil 20 and the second coil 30.
  • FIG. 8 shows a case where the winding axis of the coil 90 of the RF tag and the winding axis of the transmission / reception antenna 115 are common to each other in the flat-shaped RF tag corresponding to the comparative example of the present invention and the case where they are orthogonal to each other.
  • the magnetic flux of the transmitting / receiving antenna 115 is schematically drawn. Also in FIG. 8, when the winding axis of the coil 90 of the RF tag and the winding axis of the transmitting / receiving antenna 115 are common, it is clear that the magnetic flux of the transmitting / receiving antenna 115 passes through the inside of the coil 90 of the RF tag.
  • the winding axis of the coil 90 of the RF tag and the winding axis of the transmitting / receiving antenna 115 are orthogonal to each other, if the coil 90 of the RF tag is on an extension line of the winding axis of the transmitting / receiving antenna 115, the magnetic flux of the transmitting / receiving antenna 115 is increased. Does not pass through the inside of the coil 90 of the RF tag.
  • the present invention is formed on a substantially cubic insulating base material, and the shortest distance between them is 0.5 to 0.7 times the length of a substantially cubic piece, and the RF tag provided with the first coil and the second coil connected to has the advantageous effect that stable communication can be performed regardless of the position and the direction of the winding axis of the coil.
  • the insulating base material 10 of the RF tag 700 is preferably made of ceramic from the viewpoints that the via processing accuracy can be improved, the RF tag 700 can be made smaller, the heat resistance is high, and the RF tag 700 can be used at high temperatures.
  • the size of the insulating base material 10 of the RF tag 700 since the RF tag 700 becomes small and the RF tag 700 is inserted into the bottom of the hole 610 having a small diameter such as a keyhole, one side of the base material is used.
  • the length is preferably 0.8 mm to 1.2 mm.
  • a cavity having a depth corresponding to the thickness of the IC chip 80 may be provided at a position where the IC chip 80 is arranged.
  • an insulating coating may be formed on at least the metal wiring on the insulating base material 10 of the RF tag 700 and the surface of the IC chip 80. By forming the insulating film, it is possible to prevent the metal wiring and the IC chip 80 from being damaged when the RF tag 700 is inserted into the hole 610.
  • FIG. 4 is a schematic plan view of the RF tag 700 of the second embodiment as seen from above
  • FIG. 5 is a schematic plan view as seen from below.
  • one output of the IC chip 80 is connected to one end of the first coil 20, and the other end of the first coil 20 is the third.
  • the coil 40 is connected to one end thereof, the other end of the third coil 40 is connected to one end of the fourth coil 50, the other end of the fourth coil 50 is connected to one end of the second coil 30, The other end of the coil 30 is connected to the other output of the IC chip 80.
  • the winding axis of the transmitting / receiving antenna 115 is the first.
  • the magnetic flux of the transmitting and receiving antenna 115 is the RF tag.
  • FIG. 9 shows an RF tag system in which the RF tag 700 according to the first embodiment and an RF tag reader 950 including a transmitting / receiving antenna 115 are combined.
  • the RF tag reader can be surely brought close to the RF tag from any of X, Y, and Z directions.
  • an RF tag system capable of communicating between the RF tag and the RF tag reader can be configured.
  • FIG. 10 is a schematic plan view showing an example of the insertion member 100 according to the present embodiment
  • FIG. 11 is a schematic side view showing an example of the insertion member 100
  • FIG. It is a typical back view showing an example.
  • FIG. 13 is a schematic structural diagram showing an example of the first transmitting / receiving antenna 110.
  • FIG. 14 is a schematic explanatory view showing an example of the insertion member 100.
  • the insertion member 100 includes a first transmission / reception antenna 110, a second transmission / reception antenna 120, and a transmission line 130.
  • the first transmission / reception antenna 110 is provided on the distal end portion (distal end portion) side of the insertion member 100
  • the second transmission / reception antenna 120 is provided on the proximal end portion (proximal end portion) side of the insertion member 100 for transmission.
  • the line 130 is provided between the first transmitting / receiving antenna 110 and the second transmitting / receiving antenna 120.
  • the insertion member 100 preferably has a structure in which the first transmitting / receiving antenna 110, the second transmitting / receiving antenna 120, and the transmission line 130 are all enclosed by one or a plurality of resin materials.
  • the insertion member 100 When each of the above-described elements constituting the insertion member 100 is encapsulated in a resin material, the insertion member 100 includes a wide operation portion 122 made of a resin material and an insertion portion 140 made of a long resin material extending from the operation portion 122. Have and.
  • the first transmission / reception antenna 110 is embedded in the tip portion of the insertion portion 140
  • the second transmission / reception antenna 120 is embedded in the operation portion 122
  • the transmission line 130 is provided in the insertion portion 140.
  • the transmission line 130 can be embedded in the insertion portion 140 or provided outside the insertion portion 140.
  • transmission line 130 has microstrip line 131 and ground line 132.
  • the first transmitting / receiving antenna 110 is connected to the second transmitting / receiving antenna 120 via the transmission line 130.
  • the second transmitting / receiving antenna 120 forms a main transmitting / receiving antenna, and the first transmitting / receiving antenna 110 forms a sub transmitting / receiving antenna.
  • the microstrip line 131 according to the present embodiment is formed with a width of 0.5 mm or more and 1.5 mm or less, preferably about 1 mm.
  • the transmission line 130 of the first transmitting / receiving antenna 110 is formed of a glass epoxy resin substrate, and the thickness of the substrate is 0.5 mm or more and 1.5 mm or less, preferably about 1 mm.
  • the dielectric constant ⁇ r is 3.0 ⁇ r or more and 6.0 ⁇ r or less, preferably 4.8 ⁇ r or more and 5.1 ⁇ r or less.
  • the capacitor C1 is used for adjusting the (VSWR) return loss of the first transmitting / receiving antenna 110 and the microstrip line 131.
  • the capacitor C2 is used for tuning the second transmitting / receiving antenna 120.
  • a measuring instrument is connected to the end of the microstrip line 131 with the capacitor C2 opened and the insertion member 100 inserted.
  • the capacitor C1 is adjusted so that return loss occurs.
  • the L value of the second transmitting / receiving antenna 120 is obtained, and the value of the capacitor C2 is adjusted so as to tune to the used frequency.
  • the first transmission / reception antenna 110 includes a loop antenna 111 formed in a helical shape.
  • the helically formed loop antenna 111 is three-dimensionally wound, one end thereof is connected to the ground line 132 of the transmission line 130, and the other end thereof is connected to the microstrip line 131 of the transmission line 130.
  • the winding axis of the helically formed loop antenna 111 is coaxial or parallel to the axis of the insertion section 140.
  • the loop antenna 111 formed in a helical shape is embedded in the tip portion, and one end of the loop antenna 111 formed in a helical shape is connected to the microstrip line 131 embedded in the insertion portion 140.
  • the first transmitting / receiving antenna 110 has a width of 0.8 mm or more and 4 mm or less, a vertical length of 5 mm or more and 10 mm or less, and a horizontal length of 20 mm or more and 50 mm or less.
  • the second transmitting / receiving antenna 120 is an antenna capable of transmitting / receiving a signal from an RF reader described later.
  • the second transmission / reception antenna 120 preferably has an example size of 1 mm or more and 5 mm or less in width, 10 mm or more and 25 mm or less in vertical length, and 15 mm or more and 30 mm or less in horizontal length.
  • the size of the second transmission / reception antenna 120 is not limited to the above example, but may be an optimum size in terms of portability and operability.
  • the first transmission / reception antenna 110 is formed in a small size
  • the second transmission / reception antenna 120 is formed larger in size than the first transmission / reception antenna 110.
  • the second transmitting / receiving antenna 120 is electrically connected to the first transmitting / receiving antenna 110 via the capacitor C1 and the transmission line 130.
  • the second transmitting / receiving antenna 120 has a capacitor C2.
  • the capacitors C1 and C2 have a total return loss (reflection loss) including the first transmission / reception antenna 110, the second transmission / reception antenna 120, and the microstrip line 131 when the insertion member 100 is inserted into the hole 610. ) Is preferably 1: 5 or less.
  • FIG. 15 is a schematic explanatory view showing another example of the insertion member 100.
  • FIG. 15 differences between the insertion member 100 shown in FIG. 15 and the insertion member 100 shown in FIG. 14 will be mainly described.
  • the insertion member 100 shown in FIG. 15 includes a loop antenna 111, a second transmission / reception antenna 120, and a transmission line 130 composed of a coaxial line. Since it is a coaxial line, a resin 150 is formed inside.
  • the insertion member 100 shown in FIG. 15 is different from the insertion member 100 of FIG. 14 in that a metal wire is included inside the resin 150, and the end of the insertion member 100 is helically wound around the resin 150 to form a coaxial line. It is connected to the end of the track by welding or soldering.
  • FIG. 16 is a schematic explanatory view showing an example of the structure reading system 500.
  • a hole 610 is formed in the structure 600.
  • the RF tag 700 is provided near the hole bottom of the hole 610.
  • the RF tag 700 is preferably an RF tag 700 having a size of 5 mm square or less.
  • the RF tag 700 according to the first embodiment is attached near the bottom of the key cylinder.
  • the structure 600 is made of metal such as stainless steel, the depth of the hole 610 is 30 mm or more, and the hole diameter is 5 mm or less, the structure 600 is arranged outside the structure 600. There is a problem that UHF band communication radio waves from the RF reader 900 are blocked by the structure 600 and do not enter the holes 610. That is, radio waves from the RF reader 900 from the outside do not reach the RF tag 700.
  • the hole means that it has a bottom, and the hole means that it penetrates.
  • the insertion portion 140 of the insertion member 100 is inserted into the hole 610.
  • the size of the cross section of the insertion section 140 is smaller than the size of the hole, and therefore the insertion section 140 can be inserted into the hole, but the operation section 122 (and the second transmitting / receiving antenna 120) of the insertion member 100 does not have the hole. Since the size cannot be inserted into the hole 610, only the insertion portion 140 of the insertion member 100 is inserted into the hole 610.
  • the first transmission / reception antenna 110 of the insertion member 100 is arranged in the hole 610, and the second transmission / reception antenna 120 is not inserted in the hole 610 but arranged outside the hole 610. .
  • the radio wave of the RF reader 900 is received by the second transmitting / receiving antenna 120.
  • a magnetic flux is formed in the first transmitting / receiving antenna 110 through the transmission line 130 and passes through the inside of the first coil 20 or the second coil 30 of the RF tag 700.
  • communication can be performed between the first transmitting / receiving antenna 110 and the RF tag 700. That is, the RF tag 700 and the RF reader 900 cannot communicate unless the insertion member 100 is inserted into the hole 610 of the structure 600.
  • the RF tag 700 and the RF reader 900 can communicate with each other. Furthermore, by mounting the RF tag 700 according to the first embodiment near the bottom of the key cylinder as the RF tag, the orientation of the RF tag when the RF tag 700 is mounted, that is, the first and first RF tags 700. The RF tag 700 and the RF reader 900 can communicate with each other regardless of the direction of the winding axis of the second coil.
  • the communication information between the RF tag 700 and the RF reader 900 is encrypted.
  • FIG. 17 is a schematic explanatory view showing another example of the structure reading system 500.
  • the structure reading system 500 shown in FIG. 17 includes a hole 610 of the endless track 800 instead of the key hole 610. Further, the RF tag 700 is attached inside the hole 610 of the endless track 800.
  • the data recorded in the RF tag 700 can be read by inserting the insertion member 100.
  • the endless track 800 is illustrated, but the invention is not limited to this, and may be applied to a construction machine, a construction tool, a machine tool, a computer, or any other general appliance in which sludge does not enter.
  • the data of the RF tag 700 cannot be normally read, and the data of the RF tag 700 can be read by inserting the insertion member 100. Can be operated.
  • FIG. 18 is a schematic explanatory view showing an example of a method of manufacturing the insertion member 100.
  • FIG. 18 illustrates a method of welding the end 112 of the metal wire of the loop antenna 111 to the outer side of the coaxial line on the transmission line 130 formed of the coaxial line.
  • the capacitor C is used to store electricity and the end 112 of the metal wire is arranged outside the coaxial line. In this state, by turning on the switch SW, a large amount of electricity accumulated in the capacitor C flows, and the end 112 of the metal wire can be welded to the outside of the coaxial line.
  • the RF tag 700 As described above, by using the RF tag 700, communication between the RF tag 700 and the RF reader 900 becomes possible regardless of the orientation of the RF tag 700, and by using the insertion member 100, transmission / reception of the RF reader 900 is possible. Transmission and reception can be performed with the RF tag 700 arranged in the keyhole 610 through which radio waves cannot pass.
  • the RF tag 700 corresponds to an “RF tag”
  • the insulating base material 10 corresponds to an “insulating base material”
  • the metal wiring 60 on the first surface and the metal wiring 65 on the second surface “.
  • the conductive via 70 corresponds to the “conductive via”
  • the IC chip 80 corresponds to the “IC chip”
  • the coil 40 and the fourth coil 50 correspond to “first coil”, “second coil”, “third coil”, and “fourth coil”, respectively
  • the structure 600 has “holes”. "Structure”, the keyhole 610 and the hole 610 correspond to "keyhole, hole”, the insertion member 100 corresponds to "insertion member”, and the first transmitting / receiving antenna 110 corresponds to "first transmitting / receiving antenna”.
  • the second transmission / reception antenna 120 corresponds to the “second transmission / reception antenna”, and the transmission
  • the path 130 corresponds to a “transmission line”
  • the RF tag 700 and the insertion member 100 correspond to a “structure reading device”
  • the microstrip line 131 corresponds to a “microstrip line”
  • the RF reader 900 corresponds to an “RF reader”.
  • the RF reader 900, the RF tag 700, and the insertion member 100 correspond to a “structure reading system”
  • the RF tag reading device 950 corresponds to a “RF tag reading device”.
  • Insertion member 110 First transmission / reception antenna 111 Loop antenna 120 Second transmission / reception antenna 122 Operation part 130 Transmission line 131 Microstrip line 140 Insertion part 500 Structure reading system 600 Structure 610 Key hole, hole 700 RF tag 900 RF reader 950 RF tag reader

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Abstract

Le problème décrit par la présente invention est de fournir une étiquette RF et un système d'étiquette RF qui peuvent communiquer de manière stable avec un dispositif de lecture RF indépendamment de la direction de l'axe d'enroulement d'une bobine d'antenne de l'étiquette RF, et un dispositif de lecture de structure et un système de lecture de structure qui peuvent communiquer avec l'étiquette RG disposée au niveau ou à proximité du fond d'un trou à travers lequel une onde radio d'émission/réception d'un lecteur RF ne peut pas pénétrer. La solution selon l'invention porte sur une étiquette RF 700 qui comprend : une bobine qui est formée par un substrat isolant 10 ayant une forme parallélépipédique rectangulaire, un câblage métallique 60 sur une première surface du substrat isolant 10, un câblage métallique 65 sur une seconde surface opposée à la première surface, et des trous d'interconnexion conducteurs 70 pour connecter le câblage métallique 60 sur la première surface et le câblage métallique 65 sur la seconde surface ; et une puce CI 80 qui est disposée à peu près au centre de la première surface du substrat isolant 10.
PCT/JP2019/039735 2018-10-19 2019-10-09 Étiquette rf, système d'étiquette rf, dispositif de lecture de structure et système de lecture de structure WO2020080208A1 (fr)

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JP2020553101A JPWO2020080208A1 (ja) 2018-10-19 2019-10-09 Ｒｆタグ、ｒｆタグシステム、構造体読取装置、および構造体読取システム

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JP2018197431 2018-10-19
JP2018-197431 2018-10-19

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WO2020080208A1 true WO2020080208A1 (fr) 2020-04-23

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003129714A (ja) * 2001-10-23 2003-05-08 Hitachi Maxell Ltd キーシステム
JP2005184094A (ja) * 2003-12-16 2005-07-07 Olympus Corp アンテナおよびアンテナの製造方法
JP2005299264A (ja) * 2004-04-14 2005-10-27 Inax Corp 無線タグ内臓のキー装置
JP2006005406A (ja) * 2004-06-15 2006-01-05 Nec Tokin Corp 無線タグ
JP2009020835A (ja) * 2007-07-13 2009-01-29 Murata Mfg Co Ltd 無線ｉｃデバイス
JP2014173376A (ja) * 2013-03-12 2014-09-22 Toppan Printing Co Ltd キーおよびキーシステム
JP2017046028A (ja) * 2015-08-24 2017-03-02 Tdk株式会社 アンテナ装置
WO2017047505A1 (fr) * 2015-09-15 2017-03-23 株式会社村田製作所 Clé à dispositif de communication sans fil et serrure pour clé à dispositif de communication sans fil
WO2018101315A1 (fr) * 2016-12-02 2018-06-07 株式会社村田製作所 Etiquette rfid

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003129714A (ja) * 2001-10-23 2003-05-08 Hitachi Maxell Ltd キーシステム
JP2005184094A (ja) * 2003-12-16 2005-07-07 Olympus Corp アンテナおよびアンテナの製造方法
JP2005299264A (ja) * 2004-04-14 2005-10-27 Inax Corp 無線タグ内臓のキー装置
JP2006005406A (ja) * 2004-06-15 2006-01-05 Nec Tokin Corp 無線タグ
JP2009020835A (ja) * 2007-07-13 2009-01-29 Murata Mfg Co Ltd 無線ｉｃデバイス
JP2014173376A (ja) * 2013-03-12 2014-09-22 Toppan Printing Co Ltd キーおよびキーシステム
JP2017046028A (ja) * 2015-08-24 2017-03-02 Tdk株式会社 アンテナ装置
WO2017047505A1 (fr) * 2015-09-15 2017-03-23 株式会社村田製作所 Clé à dispositif de communication sans fil et serrure pour clé à dispositif de communication sans fil
WO2018101315A1 (fr) * 2016-12-02 2018-06-07 株式会社村田製作所 Etiquette rfid

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