WO2018034333A1 - Procédé de transmission/réception d'informations d'id et système de communication - Google Patents

Procédé de transmission/réception d'informations d'id et système de communication Download PDF

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Publication number
WO2018034333A1
WO2018034333A1 PCT/JP2017/029597 JP2017029597W WO2018034333A1 WO 2018034333 A1 WO2018034333 A1 WO 2018034333A1 JP 2017029597 W JP2017029597 W JP 2017029597W WO 2018034333 A1 WO2018034333 A1 WO 2018034333A1
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WO
WIPO (PCT)
Prior art keywords
antenna
information transmitting
irradiated
rfid tag
irradiation
Prior art date
Application number
PCT/JP2017/029597
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English (en)
Japanese (ja)
Inventor
博司 青山
錠児 麦田
Original Assignee
博司 青山
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Filing date
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Publication of WO2018034333A1 publication Critical patent/WO2018034333A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • 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
    • 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
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength

Definitions

  • the present invention relates to an ID information transmitting / receiving device and a communication system using the ID information transmitting / receiving device.
  • Japanese Patent Application Laid-Open No. 10-253132 describes a configuration that controls air conditioning by detecting the brightness, temperature, and the like in a room with a sensor. In this way, a light receiving sensor is used to detect where the light is irradiated. For example, it is necessary to use a plurality of sensors to detect whether light is received at a plurality of places.
  • the present invention has been made based on the above situation, and an ID information transmitting / receiving apparatus capable of detecting at low cost whether or not an electromagnetic wave such as light has been irradiated, and a communication system using the ID information transmitting / receiving apparatus.
  • the purpose is to provide.
  • the present invention made in order to solve the above-mentioned problems is an ID information transmitting / receiving apparatus comprising an antenna capable of communicating in a contactless manner with a transceiver for transmitting and receiving signals, and an IC chip electrically connected to the antenna.
  • the presence or absence of communication with the transmitter / receiver is switched by being irradiated with electromagnetic waves.
  • the ID information transmission / reception device Since the ID information transmission / reception device switches whether the communication with the reader / writer is switched by irradiating the electromagnetic wave, the ID information transmission / reception device detects whether the ID information transmission / reception device is irradiated with the electromagnetic wave by detecting the communication state.
  • electromagnetic waves include radio waves as well as light (including visible light, ultraviolet rays, infrared rays, and X-rays).
  • the electrical properties of the antenna should be changed by irradiation with electromagnetic waves. Irradiation of electromagnetic waves to the antenna changes the electrical properties of the antenna, and the communication state between the ID information transmission / reception device and the reader / writer is switched. Therefore, whether or not the ID information transmission / reception device is irradiated with electromagnetic waves. Can be detected.
  • the antenna has a property changing portion whose electrical properties change due to irradiation of electromagnetic waves.
  • the property changing unit By irradiating the property changing unit with electromagnetic waves, the electrical property of the property changing unit is changed, and the communication between the ID information transmitting / receiving device and the reader / writer is switched. Therefore, the ID information transmitting / receiving device is irradiated with electromagnetic waves. It can be detected whether or not.
  • the electrical property may be at least one of the dielectric constant, reactance, capacitance, impedance, resonance frequency, and electrical resistance value of the antenna.
  • the antenna is disposed between a pair of transmission / reception units disposed between the IC chip and the pair of transmission / reception units, and amplifies a change in the electrical properties of the antenna when the electromagnetic wave is irradiated and not irradiated It is good to have a change amplification part.
  • the antenna since the antenna includes the change amplification unit, the difference in the electrical properties of the antenna between when the electromagnetic wave is irradiated and when the electromagnetic wave is not irradiated can be set large, so that the presence or absence of the electromagnetic wave irradiation can be detected more reliably.
  • the ID information transmitting / receiving device may further include an antenna support that supports the antenna, and the antenna support may change its electrical properties when irradiated with electromagnetic waves, and change the electrical properties of the antenna.
  • the antenna support when the antenna support is irradiated with electromagnetic waves, the electrical properties of the antenna support change, and the electrical properties of the antenna change due to the change in the electrical properties of the antenna support. It is possible to detect whether or not an electromagnetic wave is irradiated.
  • the ID information transmitting / receiving apparatus may change the shape of the antenna by irradiation with electromagnetic waves.
  • the shape of the antenna changes, and the electrical properties of the antenna change with this shape change.
  • whether or not communication with the reader / writer is switched can be detected, so that it is possible to detect whether or not the ID information transmitting / receiving apparatus is irradiated with electromagnetic waves.
  • the ID information transmitting / receiving apparatus may further include an antenna support that supports the antenna, and the antenna support may have a shape changing portion that changes in shape by irradiation of electromagnetic waves at least at a site that supports the antenna.
  • the shape changing portion of the antenna support changes due to irradiation of electromagnetic waves, and the shape of the antenna changes due to the change in shape.
  • the antenna has at least one meander line transmitting / receiving unit.
  • the ID information transmitting / receiving apparatus can easily communicate with the reader / writer by means of the meander line transmitting / receiving unit.
  • the ID information transmitting / receiving device may be an active type, but is preferably a passive type or a semi-passive type. This makes it difficult to limit the installation location and environment of the ID information transmission / reception device, and the ID information transmission / reception device can be used in a wide range.
  • the communication system of the present invention includes the ID information transmitting / receiving apparatus having the above-described configuration and a transmitter / receiver capable of communicating with the ID information transmitting / receiving apparatus in a contactless manner.
  • the ID information transmitting / receiving apparatus and communication system of the present invention can detect at low cost whether or not the electromagnetic wave is irradiated because the reader / writer communicates that the ID information transmitting / receiving apparatus has been irradiated with the electromagnetic wave.
  • FIG. 1 is a schematic perspective view of the RFID tag according to the first embodiment of the present invention.
  • FIG. 2 is a schematic perspective view of the RFID tag according to the second embodiment of the present invention.
  • FIG. 3 is a schematic perspective view of the RFID tag according to the third embodiment of the present invention.
  • FIG. 4 is a schematic perspective view of an RFID tag according to a fourth embodiment of the present invention.
  • FIG. 5 is a schematic perspective view of an RFID tag according to a fifth embodiment of the present invention.
  • FIG. 6 is a schematic perspective view of an RFID tag according to a sixth embodiment of the present invention.
  • FIG. 7 is a schematic perspective view of a modified example of the RFID tag according to the sixth embodiment of the present invention.
  • FIG. 1 is a schematic perspective view of the RFID tag according to the first embodiment of the present invention.
  • FIG. 2 is a schematic perspective view of the RFID tag according to the second embodiment of the present invention.
  • FIG. 3 is a schematic perspective view of the RFID tag according to the third embodiment of the present
  • FIG. 8 is a schematic perspective view showing an RFID tag according to a seventh embodiment of the present invention.
  • FIG. 9 is a schematic perspective view of the RFID tag according to the seventh embodiment of the present invention viewed from the back side.
  • FIG. 10 is a schematic perspective view of an RFID tag according to an eighth embodiment of the present invention.
  • FIG. 11 is a schematic circuit diagram for explaining the configuration of the RFID tag according to the ninth embodiment of the present invention.
  • FIG. 12 is a schematic schematic explanatory diagram of a communication system according to the tenth embodiment of the present invention.
  • FIG. 13 is a schematic perspective view of an RFID tag according to another embodiment of the present invention.
  • FIG. 14 is a schematic circuit diagram for explaining a configuration of an RFID tag according to another embodiment of the present invention.
  • FIG. 1 shows an RFID tag 1 as an ID information transmitting / receiving apparatus according to a first embodiment of the present invention.
  • the RFID tag 1 in FIG. 1 includes a reader / writer as a transmitter / receiver that transmits and receives radio signals (signals), an antenna 2 that can transmit and receive signals without contact, and an IC chip 3 that is electrically connected to the antenna 2.
  • a reader / writer as a transmitter / receiver that transmits and receives radio signals (signals), an antenna 2 that can transmit and receive signals without contact, and an IC chip 3 that is electrically connected to the antenna 2.
  • the electromagnetic wave is visible light (hereinafter, visible light may be simply referred to as light in the embodiment), and the RFID tag 1 switches whether to communicate with the reader / writer depending on whether light is irradiated. .
  • the RFID tag 1 is a passive ID information transmitting / receiving device that operates using a radio wave signal from a reader / writer as an energy source.
  • the ID information transmitting / receiving apparatus may be an active type or a semi-passive type.
  • the semi-passive or passive type is preferable to the active type, and the passive type is most preferable in terms of cost and installation environment.
  • the RFID tag 1 further includes an antenna support 4 that supports the antenna 2 together with the antenna 2 and the IC chip 3.
  • the antenna support 4 is composed of a sheet-like member on which the antenna 2 is laminated.
  • the antenna support 4 can be formed from a material such as a PET film, a PPS resin, a PLA resin, a synthetic resin such as a general-purpose engineering plastic, paper, a nonwoven fabric, or glass.
  • the antenna 2 transmits and receives radio signals to and from the reader / writer.
  • the antenna 2 has a pair of transmission / reception units 2a formed by arranging a conductive material on an antenna pattern (meander line), and the IC chip 3 is arranged between the pair of transmission / reception units 2a. ing.
  • the antenna 2 can be formed, for example, by printing conductive ink in a predetermined shape on the surface of the antenna support 4.
  • the antenna 2 When the antenna 2 is irradiated with light, the electrical properties change, and the communication with the reader / writer is switched. Specifically, for example, when the antenna 2 is not irradiated with light, the RFID tag 1 can communicate with the antenna 2 and the reader / writer, and when the light is irradiated, the RFID tag 1 It is provided so that communication with the reader / writer is impossible.
  • the material for forming the antenna 2 is formed of a material that changes the electrical properties of the antenna 2 when irradiated with light.
  • a material that changes the electrical properties of the antenna 2 when irradiated with light for example, zinc oxide that becomes conductive when irradiated with light, cadmium sulfide whose electrical resistance changes when irradiated with light, and the like are included in the material for forming the antenna 2, so that the antenna 2 is irradiated with light. It can be provided so that the electrical properties of
  • the electrical property may be at least one of the dielectric constant, resonance frequency, reactance, capacitance, impedance, and electrical resistance value of the antenna 2. In such a configuration, whether or not communication is possible between the antenna 2 and the reader / writer is switched by changing the electrical property.
  • the IC chip 3 is mounted on the antenna 2.
  • the IC chip 3 processes a signal received by the antenna 2 from the reader / writer.
  • the IC chip 3 can store information and stores ID information that is distinguished from other RFID tags.
  • the IC chip 3 includes circuits having various functions, and includes, for example, a voltage limit circuit, a modulation circuit, a demodulation circuit, and the like.
  • the RFID tag 1 has a configuration in which whether or not communication is possible is switched by light as described above, and its operation will be described below.
  • the RFID tag 1 can communicate with the reader / writer. This communication is performed by the following operation, for example.
  • a radio wave signal is transmitted from the reader / writer in a state where the antenna 2 is not irradiated with light
  • the antenna 2 receives the radio wave signal, and a current flows through the IC chip 3.
  • the IC chip 3 is activated to perform information processing.
  • a radio signal is transmitted from the antenna 2 to the reader / writer, and the reader / writer receives the radio signal from the RFID tag 1. Thereby, it is detected that light is not irradiated to the installation place of the RFID tag 1.
  • the antenna 2 when the antenna 2 is irradiated with light, the electrical properties of the antenna 2 change compared to when the antenna 2 is not irradiated with light. For this reason, even if the antenna 2 receives the radio wave signal transmitted from the reader / writer, the current necessary for starting the IC chip 3 does not flow to the IC chip 3. As described above, when the antenna 2 is irradiated with light, communication between the antenna 2 and the reader / writer becomes impossible. For this reason, it is detected that the installation location of the RFID tag 1 is irradiated with light.
  • the RFID tag 1 of the present embodiment When the RFID tag 1 of the present embodiment is used, it can be detected whether or not light is irradiated with a configuration that is less expensive than the sensor. Further, since the RFID tag 1 is used, the number of detection points can be easily increased.
  • the RFID tag 11 of the second embodiment also includes an antenna 12, an IC chip 13, and an antenna support body 14, and switches on whether or not communication with a reader / writer is switched by irradiation with light.
  • the antenna 12 changes its electrical properties when irradiated with light.
  • the antenna 12 has a property changing portion 12b whose electrical property changes due to light irradiation.
  • the property changing unit 12b is configured by a switching mechanism that switches the electrical flow of the antenna 12 by light irradiation.
  • this switching mechanism can be formed of the same material as the antenna 2 of the first embodiment, for example.
  • the property changing portion 12b can be configured by using zinc oxide, cadmium sulfide, or the like.
  • the portion other than the property changing portion 12b of the antenna 12 is formed of a conductive material such as aluminum without including a material whose electrical properties change.
  • the portion other than the property changing portion 12b (transmitter / receiver portion 12a) of the antenna 12 does not include a material whose electrical properties change due to light irradiation in its forming material, and does not include a conductive material such as aluminum. It is formed from a functional material.
  • the arrangement location of the property changing portion 12b is not limited to the above-described one, and particularly the installation location as long as the electrical property of the antenna 12 can be changed by light irradiation. Does not matter.
  • the RFID tag 21 of the third embodiment also includes an antenna 22, an IC chip 23, and an antenna support 24, and whether or not communication with a reader / writer is possible by irradiating light.
  • the electrical characteristics of the antenna 22 change due to light irradiation.
  • the RFID tag 21 includes a property changing portion 22b in which the electrical property of the antenna 22 changes due to light irradiation.
  • the property changing portion 22 b is arranged in the vicinity of the IC chip 23.
  • the property changing unit 22b is electrically connected to the pair of transmitting / receiving units 22a and connected in parallel to the IC chip 23.
  • the transmitting / receiving unit 22a receives a radio signal transmitted from the reader / writer.
  • the current necessary for starting the IC chip 3 does not flow to the IC chip 3.
  • a photodiode can be adopted as the property changing portion 22b.
  • the property changing unit 22b formed of a photodiode is disposed between the pair of transmitting / receiving units 22a and close to the IC chip 3. In this case, it is more preferable that the property changing portion 22b is closer to the IC chip 3. In this configuration, since the property changing unit 22b is formed of a photodiode, the communication state is switched depending on whether or not the photodiode is irradiated with light.
  • the RFID tag 31 of the fourth embodiment also includes an antenna 32, an IC chip 33, and an antenna support 34. Whether or not communication is possible is switched, and the electrical characteristics of the antenna 32 are changed by light irradiation.
  • the shape of the antenna 32 is changed by light irradiation.
  • the shape of the antenna support 34 that supports the antenna 32 is provided so as to change by light irradiation. More specifically, the antenna support 34 is provided so as to be bent as shown in FIG. 4 when irradiated with light.
  • FIG. 4 shows a state where the antenna support 34 is irradiated with light and curved.
  • the RFID tag 31 has a shape changing portion whose shape changes due to light irradiation at a portion where the antenna support 34 supports the antenna 32. For this reason, when the RFID tag 1 is irradiated with light, the shape of the antenna support 34 changes, and the shape of the antenna 32 changes accordingly. Due to the change in the shape of the antenna 32, the electrical properties of the antenna 32, particularly the resonance frequency, change, thereby switching the availability of communication between the RFID tag 31 and the reader / writer.
  • a material containing a photoresponsive polymer can be used as the material of the antenna support 34 whose shape changes as a result of light irradiation as described above.
  • a material containing a photoresponsive polymer can be used as the photoresponsive polymer.
  • the photoresponsive polymer for example, those described in JP 2012-144610 A can be used.
  • reference numeral 32a denotes a transmission / reception unit.
  • the RFID tag 41 of the fifth embodiment also includes an antenna 42, an IC chip 43, and an antenna support 44, and whether or not communication with a reader / writer is possible by irradiating light.
  • the antenna 42 changes its electrical properties when irradiated with light.
  • the RFID tag 1 of the fifth embodiment also has a property changing portion 42b in which the antenna 42 changes its electrical properties when irradiated with light.
  • the antenna 42 includes a meander line portion 42c that is electrically connected to the IC chip 43 (and the transmitting / receiving portion 42a) via the property changing portion 42b.
  • the property changing unit 42b is not energized when light is not irradiated, and electricity flows when light is irradiated, and the transmitting / receiving unit 42a and the meander line unit 42c are energized.
  • the antenna 42 of the RFID tag 41 exhibits an antenna function only with a pair of transmission / reception units 42a when light is not irradiated, and when irradiated with light, the antenna 42 has a pair of transmission / reception units 42a and meander line units 42c.
  • the antenna function is demonstrated. For this reason, in the RFID tag 41, the electrical property of the antenna 42 changes due to light irradiation, and the availability of communication with the reader / writer is changed.
  • the RFID tag 51 of the sixth embodiment also includes an antenna 52, an IC chip 53, and an antenna support 54, and whether or not communication with a reader / writer is possible by irradiating light.
  • the antenna 52 changes its electrical properties when irradiated with light.
  • the RFID tag 51 of the sixth embodiment is such that the shape of the antenna support 54 is changed by light irradiation, and the antenna 52 is changed in accordance with the change of the shape of the antenna support 54.
  • the antenna support 54 is provided to expand and contract when irradiated with light. That is, the RFID tag 51 also has a shape changing portion 54a in which the antenna support 54 changes its shape when irradiated with light, as in the fourth embodiment. Specifically, when the RFID tag 51 is irradiated with light, the shape changing portion 54a of the antenna support 54 expands and contracts as shown in FIG. FIG.
  • FIG. 6 is a schematic view of the RFID tag 51 as viewed obliquely from above, and shows a state where the antenna support 34 is irradiated with light and the shape changing portion 54a is extended.
  • FIG. 6 exaggerates the expanded state so that the expanded state can be easily understood.
  • the straight line portion of the transmission / reception unit 52 a is illustrated as being constant in the portion where the antenna support 64 is extended, as compared with other portions. The straight portion of is widened.
  • the antenna support 54 expands and contracts as described above, so that the transmission / reception unit 52a of the antenna 52 expands and contracts, and the electrical properties of the antenna 52 change, whereby the RFID tag 51 and the reader / writer Whether communication with is switched.
  • the shape changing portion 54a of the antenna support 54 expands in the length direction of the meander line (transmission / reception portion 52a) when irradiated with light, and the antenna width direction of the meander line It shrinks in the thickness direction.
  • the antenna width direction is a direction in which the meander line linear portion extends on the surface of the antenna support 54
  • the length direction of the meander line is a direction orthogonal to the antenna width direction on the surface of the antenna support 54 ( Means a direction in which a plurality of linear portions are arranged stepwise.
  • the thing containing a photoresponsive polymer can be used similarly to 4th Embodiment.
  • the said shape change part 54a demonstrated what provided in the location corresponding to a part of one transmission / reception part 52a, as shown in FIG. 7, the said shape change part 54a is one transmission / reception part. It may be provided at a location corresponding to the entire 52a. Further, the shape of the entire antenna support 54 may be changed by light irradiation. 7 having the same configuration as the configuration in FIG. 6 is the same as that in FIG. Further, FIG. 7 also shows an exaggerated state exaggerated similarly to FIG.
  • FIG. 8 is a schematic view of the RFID tag 1 as viewed from obliquely above
  • FIG. 9 is a schematic view of the RFID tag 61 as viewed from obliquely below. The structure is understood in FIGS. The scale is exaggerated for easy illustration.
  • the RFID tag 61 of the seventh embodiment also includes an antenna 62, an IC chip 63, and an antenna support 64, and whether or not communication with a reader / writer is possible by irradiating light.
  • the antenna 62 changes its electrical property (impedance) by light irradiation.
  • the antenna 62 includes the property changing section 12b whose electrical property changes by light irradiation, as in the second, third, and fifth embodiments.
  • the antenna 62 includes the transmission / reception unit 62a and the grounding unit 62c.
  • the grounding portion 62c is disposed on the back surface of the RFID tag 61 (the surface on the opposite side of the surface on which the transmission / reception portion 62a is stacked).
  • the grounding part 62c is formed in a solid shape on the back surface.
  • the width W2 of the grounding part 62c is larger than the width W1 (antenna width) of the transmitting / receiving part 62a (see FIGS. 8 and 9).
  • the grounding portion 62c is formed of a trunk, aluminum or the like.
  • grounding part 62c is electrically connected to the transmitting / receiving part 62a through a connecting part 62b formed on the side face 64a of the antenna support 64.
  • the property changing unit 62b is disposed between the grounding unit 62c and the transmitting / receiving unit 62a.
  • the side surface 64a of the antenna support 64 is provided to be curved.
  • the antenna support 64 includes a dielectric including ceramic, polystyrene foam, ceramics, or the like. Although the dielectric is shown thick in FIGS. 8 and 9, the thickness of the dielectric is preferably 1 mm or less, and can be handled as a sheet-like RFID tag 1.
  • the transmission / reception unit 62a and the grounding unit 62c are electrically blocked by the property changing unit 62b, and when irradiated with light, the property changing unit 62b. Is in the energized state, the transmitting / receiving unit 62a and the grounding unit 62c are electrically connected. For this reason, the electrical property of the antenna 62 is changed by the irradiation of light, and the availability of communication between the RFID tag 61 and the reader / writer is changed.
  • the RFID tag 71 of the eighth embodiment also includes an antenna 72, an IC chip 73, and an antenna support 74, and whether or not communication with a reader / writer is possible by irradiating light.
  • the antenna 72 changes its electrical properties when irradiated with light.
  • the antenna 72 has a property changing portion 72b whose electrical property changes due to light irradiation. Yes.
  • the antenna 72 has a grounding portion 72c as in the seventh embodiment.
  • the grounding portion 72c is disposed on the surface of the RFID tag 71 (the surface on which the transmission / reception portion 72a is stacked). Since the surface has the grounding portion 72c in this way, the RFID tag 71 has a larger area than other embodiments.
  • the property changing unit 72b is arranged between the grounding unit 72c and the transmitting / receiving unit 72a, as in the seventh embodiment.
  • the electrical property of the antenna 72 changes depending on whether the RFID tag 71 is irradiated with light, and the availability of communication between the RFID tag 71 and the reader / writer is changed.
  • FIG. 11 is a schematic circuit diagram for explaining the RFID tag 81 of the ninth embodiment.
  • the RFID tag 81 of the ninth embodiment also includes an antenna 82, an IC chip 83, and an antenna support 84, and whether or not communication with a reader / writer is possible by irradiating light.
  • the antenna 82 changes its electrical properties when irradiated with light.
  • the antenna 2 includes a property changing portion 82b whose electrical property changes due to light irradiation. Have.
  • the antenna 82 includes a varicap diode 82c (variable capacitance diode) together with the transmission / reception unit 82a and the property changing unit 82b.
  • the antenna 82 is disposed between the pair of transmission / reception units 82a, and a change amplification that amplifies a change in the electrical property (capacitance) of the antenna 82 when light is irradiated and when it is not irradiated.
  • the property changing portion 82b is composed of a photodiode that generates an electromotive force when irradiated with light.
  • the varicap diode 82c is electrically connected to a pair of transmission / reception units 82a and is connected in parallel to the IC chip 83.
  • the varicap diode 82c is also arranged in parallel with a property changing portion 82b formed from a photodiode.
  • the property changing portion 82b is located between the IC chip 83 and the varicap diode 82c.
  • the IC chip 83, the property changing unit 82b, and the varicap diode 82c are arranged in this order, and each is connected to the pair of transmitting / receiving units 82a.
  • the varicap diode 82c By arranging the varicap diode 82c in this way, the capacitance and impedance (electrical characteristics) between the light irradiation state and the non-irradiation state change greatly, so that the RFID tag 81 is irradiated with light. Whether or not there is can be detected more accurately. More specifically, in a state where no light is irradiated, the photodiode (the property changing portion 82b) does not generate an electromotive force, and a small amount of current flows through the varicap diode 82c. In this state, electrical characteristics are set so that communication can be performed between the RFID tag 81 and the reader / writer.
  • the RFID tag 1 of FIG. 1 includes the RFID tag 1 of FIG. 1 and a reader / writer 100 that can communicate with the RFID tag 1 in a contactless manner.
  • a plurality of RFID tags 1 are used, and the plurality of RFID tags 1 are arranged at locations where operation is confirmed by light.
  • the RFID tag 1 is installed in a place such as a locker or a room entrance where light irradiation is changed by opening / closing the door, and the RFID tag 1 can detect opening / closing of the door. it can.
  • the RFID tag 1 is installed in a place where light irradiation is changed by the operation of the machine in the machine, and the operation of the machine can be detected by the RFID tag 1.
  • the RFID tag 1 is used to detect the opening and closing of the door and the machine operation, and even if the number of machines increases or the number of doors increases, it can be handled by increasing the number of RFID tags. It is.
  • the communication system can easily read and process a large number of RFID tags 1 at the same time.
  • the present invention is not limited to the above embodiment. That is, although the configuration as an RFID tag has been described in the above embodiment, the ID information transmitting / receiving device of the present invention is not limited to this, and other types of RFID devices such as a card type and a key type, It may be a communication device that transmits ID information wirelessly.
  • the antenna has a pair of meander-line transmission / reception units.
  • the shape of the antenna is not limited to this, and the antenna may employ, for example, a coiled transmission / reception unit. It is also possible to employ a patch antenna.
  • the method for forming the antenna is not particularly limited. For example, it is possible to cut out a part of a copper foil or an aluminum foil to obtain an antenna shape as shown in FIG.
  • the RFID tag 91 in FIG. 13 is formed by laminating a foil containing copper or aluminum containing a material whose electrical characteristics change to light on the antenna support 94, and then cutting the foil into the shape of the antenna 92. It is formed by mounting an IC chip 93 on the surface.
  • the antenna may have a booster antenna portion.
  • the configuration in which communication is performed using the radio wave method is illustrated, but a configuration in which communication is performed using an electromagnetic force method or a configuration in which communication is performed using another method is also possible. Further, the specific configuration of the IC chip is not limited to that of the above embodiment.
  • the ID information transmitting / receiving apparatus is a passive type, and it may be an active type or a semi-passive type.
  • the ID information transmitting / receiving apparatus 101 includes an auxiliary power circuit 105 as shown in FIG.
  • the auxiliary power circuit 105 has a battery and a resistor.
  • the ID information transmitting / receiving apparatus 101 of FIG. 14 includes an antenna 82 having a transmitting / receiving unit 82a, a property changing unit 82b, and a varicap diode 82c, a chip 83, and an antenna support 84, as in the ninth embodiment. .
  • an auxiliary power supply may be attached for support.
  • the ID information transmitting / receiving apparatus has been described.
  • the present invention is not limited to this, and the present invention can also be applied to apparatuses having other configurations capable of transmitting / receiving ID information.
  • the property changing portion whose electrical property (impedance) changes by irradiation of light such as a photodiode is provided on the antenna support.
  • the present invention is not limited to this, and the antenna support may be used depending on the application.
  • the property changing portion may be provided away from the head.
  • the antenna and the IC chip are attached to the antenna support.
  • the present invention is not limited to this, and the antenna support is used when the antenna itself has some rigidity. Is not an essential component.
  • the configuration of the antenna support is not limited to the above configuration.
  • the antenna support may be composed of a plurality of sheet-like members.
  • the antenna support it is not limited to the above embodiment. That is, it is also possible to employ a configuration in which the antenna support has an electrical property that changes due to the irradiation of electromagnetic waves, and the electrical property of the antenna changes due to the change in the electrical property of the antenna support. For example, a configuration in which the antenna support short-circuits the antenna by irradiation with electromagnetic waves can be employed.
  • the possibility of communication with the reader / writer is switched by irradiation of electromagnetic waves with different configurations, but it is also possible to combine a plurality of configurations of each of the above embodiments.
  • the antenna forming material is formed of a material that changes the electrical properties of the antenna when irradiated with light as in the first embodiment, and further includes a property changing portion (photodiode) as in the second embodiment. It is also possible to have.
  • the configuration for switching whether or not communication with the reader / writer is switched by irradiation of electromagnetic waves is not limited to the one exemplified in the above embodiment, and various configurations can be employed.
  • the antenna support is provided so that the dielectric constant is changed by irradiation of electromagnetic waves, the electrical properties of the antenna change due to the change in the dielectric constant of the antenna support, and the communication state between the ID information transmitting / receiving device and the reader / writer changes. It may be what you do. *
  • the system in the tenth embodiment is merely an example, and can be applied to a system having another configuration.
  • the communication with the reader / writer is switched by the irradiation of the electromagnetic wave and the apparatus and the reader / writer capable of transmitting and receiving the ID information wirelessly are provided, the present invention can be applied to any system configuration.
  • the ID information transmitting / receiving apparatus can detect the irradiation of electromagnetic waves, it can be used in a wide range of fields such as factories, warehouses, transportation, distribution, and handling of luggage.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

L'objectif de la présente invention est de fournir un dispositif d'émission/réception d'informations d'ID et un système de communication avec lesquels il est possible de détecter à faible coût si une onde électromagnétique a été irradiée. Ledit dispositif d'émission/réception d'informations d'ID comprend une antenne qui peut communiquer sans contact avec un dispositif de lecture-écriture, et une puce de circuit intégré connectée électriquement à l'antenne, le dispositif d'émission/réception d'informations d'ID étant caractérisé en ce que l'activation/désactivation de la communication avec le dispositif de lecture-écriture est commutée par l'irradiation d'une onde électromagnétique. Ledit système de communication est pourvu d'un dispositif d'émission/réception d'informations d'ID comprenant la configuration ci-dessus, et un dispositif de lecture-écriture qui peut communiquer sans contact avec le dispositif d'émission/réception d'informations d'identification. Les propriétés électriques de l'antenne peuvent varier en raison de l'irradiation de l'onde électromagnétique. L'antenne peut avoir une partie à propriété variable dans laquelle les propriétés électriques varient en raison de l'irradiation de l'onde électromagnétique. Les propriétés électriques peuvent comprendre au moins une parmi la constante diélectrique, la fréquence de résonance et la valeur de résistance électrique de l'antenne.
PCT/JP2017/029597 2016-08-19 2017-08-18 Procédé de transmission/réception d'informations d'id et système de communication WO2018034333A1 (fr)

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JP2016161563 2016-08-19

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN111832686A (zh) * 2020-06-10 2020-10-27 杭州电子科技大学 一种抗液体的可穿戴uhf rfid标签

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JP2005071179A (ja) * 2003-08-26 2005-03-17 Kobayashi Kirokushi Co Ltd Ｒｆｉｄデータキャリア
WO2009075226A1 (fr) * 2007-12-10 2009-06-18 Omron Corporation Etiquette rfid, et système et procédé permettant la détection de changement d'environnement d'étiquette rfid
JP2011235079A (ja) * 2010-04-16 2011-11-24 Yukihiro Fukushima 尿センサ用ｕｈｆ帯ｉｃタグおよび尿センサ用ｈｆ帯ｉｃタグ
JP2012240794A (ja) * 2011-05-19 2012-12-10 Murata Mfg Co Ltd センサタグ、センサシステム
US20150116093A1 (en) * 2013-10-30 2015-04-30 Massachusetts Institute Of Technology Chemical and physical sensing with a reader and rfid tags

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Publication number Priority date Publication date Assignee Title
JP2005071179A (ja) * 2003-08-26 2005-03-17 Kobayashi Kirokushi Co Ltd Ｒｆｉｄデータキャリア
WO2009075226A1 (fr) * 2007-12-10 2009-06-18 Omron Corporation Etiquette rfid, et système et procédé permettant la détection de changement d'environnement d'étiquette rfid
JP2011235079A (ja) * 2010-04-16 2011-11-24 Yukihiro Fukushima 尿センサ用ｕｈｆ帯ｉｃタグおよび尿センサ用ｈｆ帯ｉｃタグ
JP2012240794A (ja) * 2011-05-19 2012-12-10 Murata Mfg Co Ltd センサタグ、センサシステム
US20150116093A1 (en) * 2013-10-30 2015-04-30 Massachusetts Institute Of Technology Chemical and physical sensing with a reader and rfid tags

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111832686A (zh) * 2020-06-10 2020-10-27 杭州电子科技大学 一种抗液体的可穿戴uhf rfid标签
CN111832686B (zh) * 2020-06-10 2022-02-18 杭州电子科技大学 一种抗液体的可穿戴uhf rfid标签

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