WO2013187473A1 - 非接触icラベルおよび銘板 - Google Patents
非接触icラベルおよび銘板 Download PDFInfo
- Publication number
- WO2013187473A1 WO2013187473A1 PCT/JP2013/066348 JP2013066348W WO2013187473A1 WO 2013187473 A1 WO2013187473 A1 WO 2013187473A1 JP 2013066348 W JP2013066348 W JP 2013066348W WO 2013187473 A1 WO2013187473 A1 WO 2013187473A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- label
- main body
- nameplate
- antenna
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
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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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
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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
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
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- 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
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07771—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
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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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07775—Antenna details the antenna being on-chip
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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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07786—Antenna details the antenna being of the HF type, such as a dipole
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/04—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps to be fastened or secured by the material of the label itself, e.g. by thermo-adhesion
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- 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 a non-contact IC label used in the UHF band and the SHF band, and a nameplate provided with the non-contact IC label.
- RFID tags having various configurations as described below have been studied.
- a magnetic material magnetic sheet having a high magnetic permeability is provided between the antenna and the RFID tag, so that the antenna and the adherend are disposed.
- a magnetic flux route with less loss is secured.
- the thickness of the magnetic material can be reduced to, for example, 100 ⁇ m or 100 ⁇ m or less. In that case, a thin metal-compatible RFID tag corresponding to a metal adherend can also be produced.
- a gap between the antenna and the adherend is secured by providing a dielectric or an air layer between the antenna and the adherend.
- a method for suppressing the influence of a metal adherend on the antenna is generally used.
- this method is strongly affected by the adherend when a dielectric having a thickness of 100 ⁇ m is used between the antenna and the adherend or when an air layer having a thickness of 100 ⁇ m is provided. Communication is disabled. Therefore, at present, it is difficult to manufacture a thin RFID tag (thickness of several hundred ⁇ m or less) used in the 13.56 MHz band.
- Patent Document 1 As another RFID tag of the radio wave system used in the UHF band and the SHF band, for example, as shown in Patent Document 1, a configuration in which a magnetic body is provided between an antenna and an adherend has been proposed. In this RFID tag, a soft magnetic material is disposed between the antenna and the adherend. In Patent Document 1, a soft magnetic material is disclosed in detail.
- the antenna to be used is only disclosed to the extent of a dipole antenna and a modified antenna of a large pole antenna, and there is no detailed description of the antenna shape in actual verification, and the thickness of the magnetic material is 1 mm (communication distance) Only 15 mm) is described. Furthermore, there is no disclosure regarding a specific general example, shape, size, and the like of the adherend to which the RFID tag is attached.
- Such an RFID tag is used by being attached to or built in a metal nameplate having a product name or the like on the surface.
- This nameplate is also used by being attached to a metal adherend in the same manner as the RFID tag described above.
- the RFID tag disclosed in Patent Document 1 has a problem that, for example, it is too thick to be used as a label, and is extremely difficult to use when it is attached to a nameplate that requires thinness. .
- the present invention has been made in view of such problems, and can be communicated even if directly attached to a metal adherend, and is a thin and extremely practical RFID tag.
- An object is to provide a nameplate with an RFID tag.
- the non-contact IC label according to the first aspect of the present invention includes a magnetic sheet, an IC chip provided on the first magnetic surface of the magnetic sheet, and provided on the first magnetic surface and connected to the IC chip.
- the magnetic sheet, the first antenna unit, the second antenna unit, and the interval holding unit have heat resistance.
- the non-contact IC label according to the first aspect of the present invention includes a base material that is formed in a film shape and has heat resistance, and the IC chip, the first antenna unit, and the second antenna unit are It is more preferable that the magnetic sheet is disposed on the first magnetic surface in a state of being provided on the main surface of the base material. More preferably, the IC chip and the first antenna part, and the IC chip and the second antenna part are metal welded by ultrasonic bonding.
- the magnetic sheet is formed of magnetic particles or magnetic flakes and a binder, and the binder includes a silicone resin, a fluorine resin, an epoxy curable resin, a polyether sulfone resin, and a polyimide resin. More preferably, at least one is used.
- the non-contact IC label according to the first aspect of the present invention it is more preferable to communicate with the data reader using a radio wave system.
- the thickness of the magnetic sheet in the gap holding portion is greater than 0.5 mm and not greater than 3 mm.
- the nameplate according to the second aspect of the present invention includes the non-contact IC label according to the first aspect of the present invention and a plate-shaped main body having a metal member, and the non-contact IC label is The second magnetic surface, which is the surface opposite to the first magnetic surface of the magnetic sheet, is attached to the metal member through an adhesive layer, and is attached to the metal member. Further, the main body portion is formed in a rectangular shape in a plan view, and the non-contact IC label is provided at an edge of a central portion on a long side of the main body portion in a plan view. More preferred.
- the first surface of the main body is formed with a hole for accommodating a part of the non-contact IC label, and the interval holding portion covers the hole. It is more preferable that it is attached to. More preferably, the main body and the adhesive layer have heat resistance.
- the RFID tag and the nameplate according to the above aspect of the present invention can communicate even when directly attached to a metal adherend, and can be thin and extremely practical.
- FIG. 3 is a cross-sectional view taken along a cutting line A1-A1 in FIG.
- FIG. 3 is a side view of the non-contact IC label which comprises the nameplate which concerns on 1st Embodiment of this invention.
- It is a B direction arrow directional view in FIG.
- It is a side view explaining the procedure of the experiment using the nameplate which concerns on 1st Embodiment of this invention.
- It is a figure of the experimental result which measured the communication distance using the nameplate which concerns on 1st Embodiment of this invention.
- It is sectional drawing of the principal part of the nameplate which concerns on 3rd Embodiment of this invention.
- the nameplate according to the first embodiment of the present invention will be described below with reference to FIGS.
- the nameplate according to the first embodiment of the present invention is affixed to the outer surface of a metal adherend (not shown), and in the affixed state, communicates with an external data reader in a non-contact manner. I do.
- the nameplate 1 according to the present embodiment includes a non-contact IC label 10 capable of non-contact communication and a hole for accommodating a part of the non-contact IC label 10 on the first surface 30 a. And a plate-like main body 30 on which a portion 31 is formed.
- the thicknesses or dimensional ratios of the respective components are appropriately changed to make the drawings easy to see.
- the non-contact IC label 10 has a magnetic sheet 11, a communication unit 12 provided on one surface (first magnetic surface) 11 a of the magnetic sheet 11, and the communication unit 12. And an interval holding plate (interval holding portion) 13 disposed on the side opposite to the magnetic sheet 11. That is, the communication unit 12 is disposed so as to be sandwiched between the magnetic sheet 11 and the spacing plate 13.
- the magnetic sheet 11 a known material that is formed of magnetic particles or a composite material of magnetic flakes and plastics or rubber, and has high flexibility for labeling can be used.
- the magnetic sheet 11 is formed in a rectangular shape that is long in the longitudinal direction E in a plan view in the thickness direction (second thickness direction) D of the magnetic sheet 11.
- the communication unit 12 is disposed at the center of the magnetic sheet 11 in plan view.
- the communication unit 12 is connected to the IC chip 16, the impedance matching circuit unit 17 connected to the IC chip 16, and the impedance matching circuit unit 17 and sandwiches the impedance matching circuit unit 17 in the longitudinal direction E (longitudinal direction).
- An IC chip having a known configuration is used as the IC chip 16, and predetermined information is stored in the IC chip 16. Then, by supplying radio wave energy from an electrical contact (not shown) provided on the IC chip 16 by a radio wave system, stored information can be transmitted from the electrical contact to the outside as a radio wave.
- the impedance matching circuit unit 17 and the antenna elements 18 and 19 are integrally formed by printing silver paste ink on the main surface 20a of the base material 20 formed in a film shape with PET or the like. Yes.
- the impedance matching circuit unit 17 is formed by wiring meandering into a predetermined shape.
- the antenna elements 18 and 19 are formed in a rectangular shape having long sides in the longitudinal direction E in plan view.
- the first antenna element 18 and the second antenna element 19 and the IC chip 16 are connected via an impedance matching circuit unit 17.
- the impedance matching circuit unit 17 is electrically connected to an electrical contact (not shown) of the IC chip 16.
- the impedance matching circuit unit 17 is configured such that predetermined equal impedance and resistance values are generated between the IC chip 16 and the first antenna element 18 and between the IC chip 16 and the second antenna element 19. Has been.
- the communication unit 12 configured as described above is a so-called dipole antenna having two antenna elements 18 and 19 on one surface 11 a of the magnetic sheet 11.
- the spacing plate 13 is formed in a rectangular shape with a dielectric such as a resin so as to have a long side in the longitudinal direction E in plan view.
- the spacing plate 13 is formed so as to cover a range where the magnetic sheet 11 is disposed in a plan view. That is, the spacing plate 13 is arranged so that the outer edge surrounds the outer edge of the magnetic sheet 11 in plan view.
- the magnetic sheet 11 and the spacing plate 13 are connected via the main body 30, and are not directly connected.
- the non-contact IC label 10 may include a connection member that directly connects the base material 20 and the spacing plate 13.
- the material of the entire main body 30 is a metal member.
- the main body 30 is formed in the same rectangular shape as the spacing plate 13 in plan view.
- the main body portion 30 is made of aluminum in this embodiment.
- the material which forms a metal member does not need to be 100% of metal by weight, and the part exceeding 50% by weight should just be formed of metal.
- the hole 31 is provided at the edge of the central portion of the long side 30c of the main body 30 (the central portion in the longitudinal direction E of the main body 30 and the end in the width direction F of the main body 30). As shown in FIG. 3, the distance from the first surface 30a of the main body 30 to the bottom surface 31a of the hole 31 in the thickness direction D is set to, for example, about 450 ⁇ m.
- the dimensions of the main body 30 are, for example, 100 mm (length (length in the longitudinal direction E)) ⁇ 50 mm (width (length in the width direction F perpendicular to the thickness direction D and the longitudinal direction E)) ⁇ 1 mm ( Thickness (length in the thickness direction D)), and the length and width are the same size as a conventional metal nameplate.
- the second surface 30b of the main body 30 is a display surface.
- a display W indicating the product name, model, and the like is formed on the second surface 30b.
- the display W is formed on the second surface 30b of the main body 30 by printing or laser engraving. If the deformation amount of the main body 30 is small, the display W may be formed by stamping.
- the hole portion 31 is large enough to accommodate elements other than the spacing plate 13 constituting the non-contact IC label 10, that is, the magnetic sheet 11, the communication unit 12, and the base material 20. Is formed.
- the magnetic sheet 11 is attached to the main body 30 by affixing the other surface (second magnetic surface) 11 b of the sheet adhesive layer 41 to the center of the bottom surface 31 a of the hole 31 by the sheet adhesive layer (adhesive layer) 41. It is attached. Thereby, the non-contact IC label 10 is attached to the edge part of the center part in the long side 30c of the main-body part 30 in planar view.
- the spacing plate 13 is attached to the main body 30 so as to cover the hole 31 by sticking one surface of the spacing plate 13 to the first surface 30 a of the main body 30 by the holding plate adhesive layer 42. ing.
- the spacing plate 13 seals the hole 31 in a watertight manner.
- the storage chamber 46 is formed by the hole 31 of the main body 30 and the interval holding plate 13.
- the nameplate adhesive layer 43 provided on the other surface of the spacing plate 13 is used.
- the nameplate 1 is attached to the adherend by attaching the nameplate adhesive layer 43 to the adherend.
- the adhesive layers 41, 42, and 43 a known adhesive such as a synthetic rubber type or an acrylic type can be appropriately selected and used.
- the thickness of the sheet adhesive layer 41 is preferably set between 10 and 30 ⁇ m.
- the dimensions of the antenna elements 18 and 19 are 9 mm ⁇ 5 mm.
- members other than the IC chip 16 were used.
- RF-RW002 maximum output 1W 30 dBm
- RF-ATCP001 maximum circular polarization gain: 6 dBi
- a 950 MHz band RFID antenna manufactured by Mitsubishi Electric Corporation was used as the reading antenna R2.
- the fixed attenuator R3 AT-107 (attenuation amount: 7 dB) manufactured by Hirose Electric was used.
- the reader / writer R1, the reading antenna R2, and the fixed attenuator R3 constitute a data reading device R10.
- expanded polystyrene 201 expanded polystyrene having a size of 420 mm (length) ⁇ 160 mm (width) ⁇ 50 mm (thickness) was used.
- metal plate (metal adherend) 202 a stainless steel plate of 250 mm (length) ⁇ 250 mm (width) ⁇ 0.5 mm (thickness) was used.
- the reading direction at the time of measurement is the surface (the first surface 30a of the main body 30) on which the non-contact IC label 10 is arranged as the surface, and the opposite surface (the second surface of the main body 30). With the surface 30b) as the back surface, reading from both surfaces was performed by changing the top and bottom of the main body 30.
- the main body 30 and the non-contact IC label 10 were read by pressing both of them together with a band (not shown). It is known that the polystyrene foam 201 used in the experiment hardly affects the measurement result of the communication distance.
- the reader / writer R1 and the reading antenna R2 used in the experiment are a UHF band high-power reader / writer and an antenna that can read the main body 30 to which the non-contact IC label 10 is attached at a certain communication distance.
- the maximum output of the reader / writer R1 is 1 W (30 dBm), but for the convenience of the experimental environment, a ⁇ 7 dB fixed attenuator R3 is connected to the coaxial cable connecting the reader / writer R1 and the reading antenna R2, and the output of the reader / writer R1 was attenuated to 0.2 W (23 dBm).
- the reading antenna R2 was rotated toward the main body 30 and reading was performed at two angles of 0 degrees and 90 degrees with respect to the main body 30, and the value with the longer communication distance was adopted as the experimental result.
- the magnetic sheet 11 used in the experiment was used as a 350 ⁇ m thick magnetic sheet by superimposing 100 ⁇ m thick and 250 ⁇ m thick magnetic sheets.
- a non-contact IC label 10 is arranged at the central portion of the first surface 30a of the main body 30 so that the longitudinal direction of the non-contact IC label 10 is parallel to the longitudinal direction of the main body 30, and a nameplate as a comparative example 301 was constructed. In this state, the communication distance of the nameplate 301 was measured.
- the longitudinal direction of the non-contact IC label 10 is parallel to the longitudinal direction of the main body 30 at the position shown in FIG. 2 in plan view (the edge of the central portion of the long side 30 c).
- the non-contact IC label 10 was arranged so as to form a nameplate 302 as a comparative example.
- the interval holding plate 13 is not attached to the nameplate 302. In this state, the communication distance of the nameplate 302 was measured.
- the non-contact IC label 10 can be read from the back surface by arranging the non-contact IC label 10 at the position of Experiment 2, that is, at the edge of the central portion of the long side 30c of the main body 30. Therefore, it was found that the main body 30 resonates with the frequency of the communication electromagnetic wave of the data reading device R10, and the main body 30 functions as a radiation antenna for the non-contact IC label 10.
- the nameplate 1 is attached to the outer surface of a metal adherend, and in the attached state, communicates with an external data reader in a non-contact manner. It is aimed. Therefore, in this experiment, the experiment was performed using the stainless steel metal plate 202 as the metal adherend.
- the size of the used metal plate 202 is 250 mm (length) ⁇ 250 mm (width) ⁇ 0.5 mm (thickness), and this size does not resonate with the frequency of the communication electromagnetic wave of the reader / writer R1. It is.
- the spacing plate 13 was formed of a sheet made of PET (Poly-Ethylene-Terephthalate) as a dielectric.
- the size of the spacing plate 13 is the same length and width as the main body 30.
- the interval holding plate 13 was set to a thickness of 250 ⁇ m to 3000 ⁇ m by stacking one to a plurality of PET sheets having a thickness of 250 ⁇ m, and the communication distance was measured for each thickness.
- maintenance board 13 was 3000 micrometers (3 mm) in this experiment.
- the measurement was performed with the spacing plate 13 in close contact with the first surface 30a of the main body 30 and the second surface 30b facing the reading antenna R2.
- the nameplate 1 is not provided with the holding plate adhesive layer 42 and the nameplate adhesive layer 43. This is because it is known that the adhesive layers 42 and 43 hardly influence the measurement result of the communication distance of the nameplate 1.
- the measurement result (graph) of the communication distance by this experiment is shown in FIG. As shown in FIG. 7, it was found that the communication distance increases almost linearly by increasing the thickness of the spacing plate 13. At a thickness of 500 ⁇ m, the value is close to the communication distance measured on the polystyrene foam 201, and the communication distance further increases in the region where the thickness exceeds 500 ⁇ m. At a thickness of 3000 ⁇ m, the communication distance reaches 2000 mm or more. In this way, by setting the thickness of the interval holding plate 13 to be greater than 500 ⁇ m and equal to or less than 3000 ⁇ m, it is possible to increase the communication distance with the data reading device R10 while making the nameplate 1 thin.
- the thickness of the spacing plate 13 is more preferably 1500 ⁇ m or more and 2750 ⁇ m or less.
- the main body 30 resonates with the communication electromagnetic wave of the reading device and functions as a radiation antenna. If it is considered that the metal plate 202 functions as a conductor ground plate of the microstrip for the main body 30 functioning as the radiation antenna, the configuration of this experiment should be regarded as a configuration similar to a patch antenna having a conductor ground plate. Can do. That is, the main body 30 functions as a radiating element of the patch antenna, and the one metal plate 202 functions as a conductor ground plane of the antenna, so that the same action as that of the patch antenna occurs, and the radiation directivity is the data reading device R10. It is thought that the communication distance is increasing due to concentration on the side (the direction of arrival of electromagnetic waves).
- the patch antenna is theoretically said to have a directivity characteristic of about 9 dB at maximum by increasing the area of the conductor ground plane, and the increase in the communication distance of the experimental result is that of the directivity characteristic of this patch antenna. It can be inferred from the maximum value.
- the distance holding plate 13 is disposed on the side opposite to the side on which the magnetic sheet 11 is provided in the communication unit 12, so that the metal Even when the interval holding plate 13 is attached to the plate 202 and the non-contact IC label 10 is used, communication with the data reader R10 can be performed. Since each of the magnetic sheet 11, the communication part 12, the space
- the impedance matching circuit unit 17 and the antenna elements 18 and 19 are integrally formed on the main surface 20 a of the base material 20.
- the manufacturing efficiency of the non-contact IC label 10 can be improved by providing a plurality of parts on the base material 20 in advance.
- the thickness of the interval holding plate 13 By setting the thickness of the interval holding plate 13 to be greater than 500 ⁇ m and equal to or less than 3000 ⁇ m, it is possible to further increase the communication distance with the data reading device R10 while making the non-contact IC label 10 and the nameplate 1 thin.
- the display W can be provided on the second surface 30b of the main body 30 while communicating with the data reading device R10.
- the communication distance with the data reading device R10 can be further increased.
- the magnetic sheet 11, the communication unit 12, and the base material 20 are accommodated in the hole 31 of the main body 30, and the spacing plate 13 is attached to the main body 30 so as to cover the hole 31.
- the sealing function which protects the magnetic sheet 11, the communication part 12, and the base material 20 which were accommodated in the storage chamber 46 from a liquid, dust, moisture, or gas.
- the nameplate 1 of this embodiment by setting the thickness of the interval holding plate 13 (the interval between the main body 30 and the metal plate 202) according to the purpose of use, between the nameplate 1 and the data reader R10. Can perform good communication.
- the spacing plate 13 was formed of a foamed polystyrene having a dielectric constant close to air or a magnetic sheet having magnetic permeability and magnetic loss instead of the PET sheet. Went. However, in any case, the communication distance between the non-contact IC label 10 and the reading device hardly increases or decreases due to the increase or decrease in the thickness of the interval holding plate 13, and the readable communication distance. Was also quite low. Therefore, it has also been found that the material forming the spacing plate 13 must be a dielectric having a certain dielectric constant. As a material for forming the spacing plate 13, a polyester resin, a phenol resin, a melamine resin, or the like can be suitably used in addition to PET.
- the upper limit of the thickness of the interval holding plate 13 is set to 3000 ⁇ m.
- the communication distance can be increased by setting the thickness of the interval holding plate 13 to 3000 ⁇ m or more. It is expected to increase further.
- the output of the reader / writer R1 can be increased to the maximum 1 W (30 dBm), so it goes without saying that the communication distance further increases. Furthermore, the thickness of the magnetic sheet 11 and the electrical property values (permeability, magnetic loss, dielectric constant, dielectric loss, etc.) are made suitable, the impedance matching of the impedance matching circuit unit 17, the antenna element It is considered that the communication distance can be further extended by optimizing the shapes of 18 and 19.
- the spacing plate 13 was formed of a PET sheet, but the material forming the spacing plate 13 is not limited as long as it is a dielectric. For example, glass, rubber, liquid or the like can be mentioned. Depending on the dielectric constant or dielectric loss value of the dielectric in other materials, the relationship between the thickness of the spacing plate 13 and the communication distance may be different from the relationship shown in FIG. Therefore, the nameplate 1 of various specifications can be produced by appropriately selecting the material for forming the spacing plate 13 and appropriately setting the thickness of the spacing plate 13.
- the non-contact IC label 10 is attached to the edge of the central portion of one long side 30c shown in FIG. 2 and the edge of the central portion of the other long side 30d of the main body portion 30, respectively.
- An experiment was conducted to determine whether the label 10 can be read simultaneously. Since the data reading device R10 used in the experiment has a function of reading a plurality of data simultaneously (anti-collision), the experiment can be performed using the same data reading device. As a result of the experiment, it was found that both non-contact IC labels 10 can be read well.
- non-contact IC labels 10 on the main body 30 and, for example, obtain reliability when used by being attached to a metal adherend requiring long-term management of several decades.
- a non-contact IC label 10 for backup can also be installed in the nameplate 1 in advance.
- the appearance of the nameplate 1 in a plan view is the same as that of a conventional metal nameplate because the main body 30 is formed of a single flat metal plate without a slit or the like. Therefore, even if the nameplate of the present invention having the RFID function is provided instead of the conventional nameplate, it is considered that no problem in appearance occurs.
- An attachment hole that penetrates in the thickness direction D is provided in the main body portion 30 of the nameplate of the present embodiment, and a non-metallic bolt, screw, or the like such as plastic is inserted into the attachment hole and attached to a metal adherend.
- a non-metallic bolt, screw, or the like such as plastic is inserted into the attachment hole and attached to a metal adherend.
- the nameplate and the adherend can be detachable.
- the nameplate adhesive layer 43 is not provided.
- the non-contact IC label 10 does not occur in the storage chamber 46, in addition to the non-contact IC label 10, functional parts (elements) such as a battery, an electronic circuit, or a sensor element can be mounted.
- a sensor element as a temperature sensor and a battery as a driving power source
- the nameplate can be used as a labeled nameplate having a semi-passive function such as temperature measurement by a self-supporting operation.
- the battery mounted in the storage chamber 46 can be replaced by providing the aforementioned attachment hole and screw attachment / detachment structure and not including the holding plate adhesive layer 42.
- the inside of the sealed storage chamber 46 is filled with gas, liquid, foaming material, etc. according to the usage environment. You may keep it. It is effective when used in an environment that is constantly subjected to stress such as temperature, vibration, or shock.
- the nameplate 1 is electrically one conductor because the main body 30 which is the main structure is formed of metal. For this reason, when an electrical shock such as a surge is received from the outside, the surge current leaks to the adherend made of metal via the inside of the main body 30 in the same manner as a normal electric wire, It is considered that there is almost no damage to the non-contact IC label 10 built in the nameplate 1.
- the non-contact IC label 10 is affixed to the inner wall of the storage chamber 46 with an insulating sheet adhesive layer 41. Further, the antenna elements 18, 19 and the IC chip 16 are placed on the magnetic sheet 11 having a high internal resistance. Is provided. Therefore, it can be said that the non-contact IC label 10 has a layer structure that is strong against an electric shock such as a surge even if it is a single unit.
- the non-contact IC label 10 Since the non-contact IC label 10 is disposed in the sealed storage chamber 46, it is necessary to form a protective material and improve the appearance (visual value) as required for a general RFID tag (inlet). There is no need. Therefore, the non-contact IC label 10 can be in a form specialized for communication function, cost, and the like.
- the main body 30 is formed in a rectangular shape in plan view, but as described above, the main body 30 resonates with the frequency of the communication electromagnetic wave of the data reading device R10, and the main body 30 is a non-contact IC label. If it functions as 10 radiation antennas, the shape is not limited.
- the main body may be, for example, a circle, an ellipse, a triangle, or a polygon in plan view.
- the thickness of the main body 30 is 1 mm in the embodiment, it is known that there is almost no superiority or inferior communication performance due to the difference in the thickness of the main body 30 unless the nameplate is extremely thick.
- the main body 30 is a thin metal such as a metal deposition film. It may be formed by the body.
- the shape of the antenna elements 18 and 19 is rectangular in the above embodiment, the shape is not limited as long as the main body 30 functions as a radiation antenna.
- the shape of the antenna element may be, for example, a square, a circle, an ellipse, or a polygon.
- the shape of the magnetic sheet 11 in plan view only needs to overlap at least a part of the communication unit 12 constituting the impedance matching circuit unit 17 and the antenna elements 18 and 19 in plan view. It has been confirmed that the presence / absence of the portion where the portion 12 is not provided does not greatly affect the length of the communication distance.
- the thickness of the magnetic sheet 11 is 350 ⁇ m in the embodiment, but it is sufficient that the main body 30 has a necessary thickness for functioning as a radiation antenna.
- the thickness of the magnetic sheet 11 is 350 ⁇ m or less, the communication distance tends to decrease. Note that no evaluation was performed when the thickness of the magnetic sheet 11 was 350 ⁇ m or more.
- the main body 30 functions as a radiating element by arranging the non-contact IC label 10 at the central edge of the long side 30c of the main body 30 in plan view. Therefore, even if the main body has a shape different from that of the present embodiment, it is considered that the main body functions as a radiating element by disposing the non-contact IC label 10 at the edge of the central portion of the long side of the shape. .
- the non-contact IC label 10 can be disposed at the edge of the center of any side. .
- the above-mentioned metal adherend is temporarily attached to an object to be heated or passed through a high-temperature drying furnace, such as a boiler, an electric heater, an internal combustion engine, a steam turbine, a motor, or a light source. Includes adherends that are exposed to high temperature environments. When attaching nameplates to these adherends, it is essential that the nameplates have heat resistance performance against high temperatures in addition to communication performance.
- the target upper limit temperature is set to 200 ° C. in order to withstand the high temperatures described above.
- the purpose is to prevent the non-contact IC label stored in the storage chamber 46 from being deformed, altered, peeled off, deteriorated in communication performance, and not deteriorated due to deformation, altered, etc. of the spacing plate under this upper limit temperature.
- the communication performance under this upper limit temperature is excluded from this embodiment, and communication between the nameplate and the data reading device under the upper limit temperature is not assumed.
- the heat resistance of the nameplate was increased by raising the heat resistance temperature of each component without changing the basic structure. The contents will be described in detail below.
- the impedance matching circuit unit 17 and the antenna elements 18 and 19 are formed on the main surface 20a of the substrate 20 by pattern printing with silver paste ink.
- the heat resistance temperature of the members constituting the impedance matching circuit unit 17 and the antenna elements 18 and 19 is too low.
- the construction of the contact IC label 10 is not useful. Based on this, it will be considered to raise the heat resistance temperature of the constituent elements of the impedance matching circuit section and antenna element described below.
- the heat resistant temperature of a base material is formed by forming a base material with film materials, such as a polyimide or polyetherimide, exceeding 200 degreeC. Can be raised.
- film materials such as a polyimide or polyetherimide
- the impedance matching circuit unit 17 and the antenna elements 18 and 19 are formed by pattern printing with silver paste ink.
- the upper limit of the operating temperature of the impedance matching circuit section and the antenna element can be raised to 200 ° C. by forming an aluminum thin film or a copper thin film by etching.
- the bumps of the IC chip 16 and the impedance matching circuit unit 17 are connected by using a flip chip mounting bonding method using an ACP (anisotropic conductive paste) as a bonding material.
- the bump and the impedance matching circuit unit 17 are electrically connected by the effect.
- the electrical connection between the IC chip 16 and the impedance matching circuit unit 17 is not guaranteed under the environment of 200 ° C., which is the upper limit of the use temperature, because the heat resistant temperature of the ACP is too low.
- the bumps of the IC chip 16 and the impedance matching circuit portion are made of different metals. Even ultrasonic welding can be used. Therefore, by using this bonding method, electrical connection reliability in an environment of 200 ° C., which is the upper limit of the use temperature, can be obtained.
- the magnetic sheet 11 of the first embodiment is formed of a composite material of magnetic particles or magnetic flakes and plastic or rubber.
- the upper limit of the use temperature of the magnetic sheet 11 is 85 ° C. (manufacturer recommended value).
- parameters that greatly affect the antenna characteristics are the values of magnetic permeability and magnetic loss, while the values of dielectric constant and dielectric loss are It has been found that the degree of influence on properties is small.
- the magnetic permeability and magnetic loss values of the magnetic sheet 11 are determined by the shape, direction, density, etc. of the magnetic particles or magnetic flakes used.
- the value of one dielectric constant and dielectric loss is determined by the dielectric constant and dielectric loss of the binder (binder) in addition to the shape, direction and density of the magnetic particles or magnetic flakes.
- the material of the magnetic particles or magnetic flakes of the magnetic sheet 11 is not changed, and only the binder is heat resistant such as silicone resin, fluorine resin, epoxy cured resin, polyethersulfone resin, or polyimide (polyamide) resin.
- the binder is heat resistant such as silicone resin, fluorine resin, epoxy cured resin, polyethersulfone resin, or polyimide (polyamide) resin.
- the spacing plate 13 is formed of a PET sheet.
- maintenance board can be raised by forming a space
- the material whose heat-resistant temperature exceeds 200 degreeC such as a polyimide or polyetherimide.
- the dielectric constant value of the material changes when the material of the spacing plate changes, as described above, it is necessary to reset the thickness with respect to the communication distance according to the purpose of use.
- an acrylic or silicone material having a heat resistant temperature exceeding 200 ° C. can be suitably used.
- the magnetic sheet, the antenna element, the spacing plate, the base material, the adhesive layers 41, 42, 43, and the main body formed of metal using materials and forming methods different from those in the first embodiment are 200 ° C. Heat resistance.
- the nameplate with the heat countermeasures as described above does not conduct a communication experiment with the reading device, it is considered that the result of the communication distance almost the same as that of the nameplate 1 of the first embodiment is obtained.
- the non-contact IC label and the nameplate of the present embodiment communication is possible even when directly attached to a metal adherend, and a thin configuration can be achieved.
- the non-contact IC label and nameplate of this embodiment since the magnetic sheet, antenna element, spacing plate, and base material have heat resistance, the non-contact IC can endure even in an environment of 200 ° C. which is the upper limit of the use temperature. Labels can be configured.
- the main body part and the adhesive layers 41, 42, 43 have heat resistance, it is possible to constitute a nameplate that can withstand an environment of 200 ° C., which is the upper limit of the use temperature. it can.
- the communication performance under the upper limit temperature is out of scope, but by raising the upper limit of the use temperature of the IC chip 16 used in the non-contact IC label of this embodiment, Communication performance under the upper limit temperature as a non-contact IC label can also be guaranteed.
- the target value of the upper limit of the operating temperature is 200 ° C.
- the heat resistant temperature of the member should be increased. If it is possible, the upper limit of the operating temperature of the nameplate as a whole can be raised.
- the nameplate 2 of the present embodiment includes a noncontact IC label 50 and a main body 60 instead of the noncontact IC label 10 and the main body 30 of the nameplate 1 of the first embodiment.
- the non-contact IC label 50 includes an interval holding member (interval holding portion) 53 instead of the interval holding plate 13 of the non-contact IC label 10.
- the spacing member 53 is formed by injection molding using a dielectric such as resin (plastic).
- the spacing member 53 is formed in a rectangular plate shape in plan view, and a concave portion 54 is formed on one surface, and a plurality of protrusions 55 are formed on the other surface.
- the recess 54 is formed in a size that can accommodate the magnetic sheet 11, the communication unit 12, and the base material 20.
- the main body 60 is formed in the same rectangular plate shape as the interval holding member 53 in plan view.
- the main body 60 is made of the same material as the main body 30 of the above embodiment.
- a sheet adhesive layer 41 is provided on the first surface 60 a of the main body 60.
- the other surface 11 b of the magnetic sheet 11 and one surface of the spacing member 53 are attached to the sheet adhesive layer 41 in a state where the magnetic sheet 11, the communication unit 12, and the base material 20 are accommodated in the recess 54. ing.
- a storage chamber 56 is formed by the main body 60 and the recess 54 of the spacing member 53.
- the metal adherend 250 is provided with a receiving portion 251 that is recessed from the outer surface.
- a plurality of fitting holes 252 are formed on the bottom surface of the housing portion 251.
- the inner diameter of the fitting hole 252 is set to be equal to or slightly larger than the outer diameter of the protrusion 55 of the spacing member 53.
- the nameplate 2 is attached to the accommodating portion 251 of the adherend 250 without an adhesive layer by press-fitting the protrusion 55 into the fitting hole 252.
- the outer surface of the adherend 250 and the second surface 60b of the main body 60 are set to be substantially on the same plane. This prevents the nameplate 2 from protruding from the adherend 250. If it is possible to increase the depth at which the accommodating portion 251 is recessed, the interval holding member 53 can be made thicker accordingly, so that the communication distance of the nameplate 2 can be further extended as described above.
- the storage chamber 56 Since the storage chamber 56 is formed by sealing the recess 54 with the main body 60, the storage chamber 56 also has a sealing function in the present embodiment as in the above-described embodiment.
- a gap 260 formed between the inner surface of the accommodating portion 251 and the outer peripheral surface of the nameplate 2 can be filled with a known sealing material (not shown).
- the interval holding member 53 is formed by injection molding, a dielectric is present between the main body 60 and the adherend 250, and the interval between the main body 60 and the adherend 250 is maintained.
- the form and manufacturing method of the spacing plate are not limited.
- the spacing plate may be formed by filling the accommodating portion 251 with a sealing material or an adhesive material that is a dielectric. In this case, as long as the close contact between the first surface 60 a of the main body 60 and the magnetic sheet 11 is maintained, the sheet adhesive layer 41 may not be provided on the nameplate 2.
- the outer surface of the adherend 250 is used as a conductor ground plate.
- the nameplate 2 itself includes a metal plate corresponding to the conductor ground plate, and the metal plate becomes a part of the adherend 250. A structure may be used.
- the first to third embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the configuration does not depart from the gist of the present invention. Changes are also included. Furthermore, it goes without saying that the configurations shown in the embodiments can be used in appropriate combinations. For example, in the first to third embodiments, when the impedance matching circuit unit and the antenna element are relatively thick and easy to handle, the non-contact IC label does not include a base material, and the impedance matching circuit unit and The antenna element may be directly formed on one surface of the magnetic sheet.
- the whole main-body part was taken as the metal member.
- a part of the main body part may be a metal member, and the remaining part of the main body part may be a resin member formed of resin.
- the non-contact IC label is affixed to the metal member in the main body.
- the use application of the present invention is a nameplate, the use application of the present invention is not limited to this, and may be used as a general-purpose wireless communication device, RFID tag, or the like.
- a wireless data collection device, a metal-compatible RFID tag, an active RFID tag, or the like may be used.
- Non-contact IC label Magnetic sheet 11a One surface (first magnetic surface) 11b The other surface (second magnetic surface) 13 Spacing plate (spacing unit) 18 1st antenna element (1st antenna part) 19 Second antenna element (second antenna part) DESCRIPTION OF SYMBOLS 20 Base material 20a Main surface 30, 60 Main body part 30c Long side 31 Hole part 41 Adhesive layer for sheets (adhesive layer) 53 Interval Holding Member (Interval Holding Unit) D Thickness direction (second thickness direction)
Abstract
Description
本願は、2012年6月13日に、日本に出願された特願2012-134296号に基づき優先権を主張し、その内容をここに援用する。
たとえば、13.56MHz帯の電波を用いる電磁誘導方式のRFIDタグでは、アンテナとRFIDタグとの間に高透磁率の磁性体(磁性シート)を設けることで、アンテナと被接着体との間にロスの少ない磁束のルートが確保される。これにより、金属製の被接着体に取り付けても用いることができるRFIDタグを作製することを実現している。なお、通信性能は低下するが磁性体の厚さを例えば100μmまたは100μmx以下と薄くすることもできるその場合、金属製の被接着体に対応した薄手の金属対応RFIDタグも作製することができる。
しかしながら、この方法では、アンテナと被接着体との間に、厚さが100μmの誘電体を用いる、又は厚さが100μmの空気層を設ける場合などは、被接着体の影響を強く受けてしまい通信不能となる。よって、現状では、13.56MHz帯で用いられるような薄手(厚さが数百μm以下)のRFIDタグを作製することは難しい。
本発明の第1態様に係る非接触ICラベルは、磁性シートと、前記磁性シートの第1磁性面に設けられたICチップと、前記第1磁性面に設けられかつ前記ICチップに接続された第1のアンテナ部および第2のアンテナ部と、誘電体により形成された間隔保持部と、を備え、前記磁性シートと前記間隔保持部との間に、前記ICチップ、前記第1のアンテナ部、および前記第2のアンテナ部が配置される。
また、上記本発明の第1態様に係る非接触ICラベルが、フィルム状に形成され耐熱性を有する基材を備え、前記ICチップ、前記第1のアンテナ部、および前記第2のアンテナ部は、前記基材の主面上に設けられた状態で、前記磁性シートの第1磁性面に配置されていることがより好ましい。
また、前記ICチップと前記第1のアンテナ部、および前記ICチップと前記第2のアンテナ部は、超音波接合によって金属溶接されていることがより好ましい。
また、上記本発明の第1態様に係る非接触ICラベルにおいて、データ読み取り装置と電波方式を用いて通信することがより好ましい。
また、前記間隔保持部における前記磁性シートの厚さは、0.5mmより大きく3mm以下であることがより好ましい。
また、前記本体部は、前記本体部は、平面視において矩形状に形成され、前記非接触ICラベルは、平面視における前記本体部の長辺における中央部の縁部に設けられていることがより好ましい。
また、前記本体部および前記接着層が耐熱性を有していることがより好ましい。
以下、本発明の第1実施形態に係る銘板を、図1から図7を参照しながら説明する。
本発明の第1実施形態に係る銘板は、不図示の金属製の被接着体の外面に貼り付けられ、その貼り付けられた状態において、外部のデータ読み取り装置との間で非接触にて通信を行う。
図1から図3に示すように、本実施形態に係る銘板1は、非接触で通信可能な非接触ICラベル10と、第一の面30aに非接触ICラベル10の一部を収容する穴部31が形成された板状の本体部30とを備えている。
なお、以下の全ての図面においては、図面を見やすくするため、各構成要素の厚さまたは寸法の比率は適宜変更している。
非接触ICラベル10は、図4および図5に示すように、磁性シート11と、磁性シート11の一方の面(第1磁性面)11aに設けられた通信部12と、通信部12に対して磁性シート11とは反対側に配置された間隔保持板(間隔保持部)13とを有している。すなわち、通信部12は磁性シート11と間隔保持板13との間に挟まれるように配置されている。
磁性シート11としては、磁性粒子、または磁性フレークとプラスチックもしくはゴムとの複合材で形成され、ラベル用途として柔軟性に富んだ公知の材料を用いることができる。
図5に示すように、磁性シート11の厚さ方向(第2の厚さ方向)Dにおける平面視において、磁性シート11は長手方向Eに長い矩形状に形成されている。
通信部12は、ICチップ16と、ICチップ16に接続されたインピーダンス整合回路部17と、インピーダンス整合回路部17に接続されるとともにインピーダンス整合回路部17を長手方向Eにおいて挟むように(長手方向Eにおいてインピーダンス整合回路部17がそれらの間に配置されるように)配置された第1のアンテナエレメント(第1のアンテナ部)18及び第2のアンテナエレメント(第2のアンテナ部)19と、を有している。
ICチップ16は公知の構成のICチップが用いられ、ICチップ16内には所定の情報が記憶されている。そして、ICチップ16に設けられた不図示の電気接点から電波方式により電波のエネルギーを供給することで、記憶された情報をこの電気接点から外部に電波として伝達させることができる。
インピーダンス整合回路部17は、所定の形状に蛇行させた配線により形成されている。
アンテナエレメント18、19は、平面視において長手方向Eに長辺を有するように矩形状に形成されている。第1のアンテナエレメント18および第2のアンテナエレメント19と、ICチップ16とは、インピーダンス整合回路部17を介して接続されている。インピーダンス整合回路部17は、ICチップ16の不図示の電気接点に電気的に接続されている。インピーダンス整合回路部17は、ICチップ16と第1のアンテナエレメント18との間、およびICチップ16と第2のアンテナエレメント19との間に、互いに等しい所定のインピーダンスおよび抵抗値が生じるように構成されている。
間隔保持板13は、樹脂などの誘電体により、平面視で長手方向Eに長辺を有するように矩形状に形成されている。この例では、平面視において、間隔保持板13は、磁性シート11が配置されている範囲を覆うように形成されている。すなわち、間隔保持板13は、平面視において、その外縁が磁性シート11の外縁を囲むように配置されている。
磁性シート11と間隔保持板13とは、図3に示すように本体部30を介して接続されていて、直接接続されてはいない。しかし、例えば、非接触ICラベル10が、基材20と間隔保持板13とを直接接続する接続部材を備えてもよい。
なお、金属部材を形成する材料は、重量比100%が金属である必要はなく、重量比で50%を越える部分が金属で形成されていればよい。
穴部31は、本体部30の長辺30cにおける中央部の縁部(本体部30の長手方向Eにおける中央部でかつ本体部30の幅方向Fにおける端部)に設けられている。図3に示すように、厚さ方向Dにおける本体部30の第一の面30aから穴部31の底面31aまでの距離は、例えば、約450μmに設定される。
本体部30の寸法は、例えば、100mm(長さ(長手方向Eにおける長さ))×50mm(幅(厚さ方向Dおよび長手方向Eにそれぞれ直交する幅方向Fにおける長さ))×1mm(厚さ(厚さ方向Dにおける長さ))であり、長さと幅に関しては従来の金属製の銘板と同等の大きさである。
表示Wは、印刷またはレーザー彫刻などによって本体部30の第二の面30bに形成されている。なお、本体部30の変形量が少なければ、表示Wを打刻による刻印で形成してもかまわない。
穴部31は、図2および図3に示すように、非接触ICラベル10を構成する間隔保持板13以外の要素、すなわち、磁性シート11、通信部12、および基材20を収容可能な大きさに形成されている。磁性シート11は、シート用接着層(接着層)41により穴部31の底面31aの中央部にシート用接着層41の他方の面(第2磁性面)11bを貼り付けることで本体部30に取り付けられている。これにより、平面視において、非接触ICラベル10は、本体部30の長辺30cにおける中央部の縁部に取り付けられている。
本体部30に間隔保持板13が取り付けられたときに、本体部30の穴部31と間隔保持板13とにより、収納室46が形成される。
なお、このように構成された銘板1を、金属製の被接着体に取り付けるときには、間隔保持板13の他方の面に設けられた銘板用接着層43が用いられる。銘板用接着層43を被接着体に貼り付けることで、被接着体に銘板1が取り付けられる。
実験は、図6に示す構成で行われた。
本体部30には、100mm(長さ)×50mm(幅)×1mm(厚さ)のアルミニウム板を用いた。
磁性シート11には、38mm×7mmの大同特殊鋼(株)製のNRC010(厚さ100μm)及びNRC025(厚さ250μm)を用いた。
ICチップ16には、NXP社製のUCODE G2iLを用いた。
インピーダンス整合回路部17、およびアンテナエレメント18、19は、PETフィルム(厚さ50μm)で形成された基材20上に銀ペーストインキでパターン印刷(厚さ8μm)することで形成した。なお、アンテナエレメント18、19の寸法は、9mm×5mmを採用した。通信部12を構成する部材のうち、ICチップ16以外は自社製の部材を用いた。
リーダライタR1には、三菱電機社製の950MHz帯RFID用リーダライタであるRF-RW002(最大出力1W 30dBm)を用いた。
読み取りアンテナR2には、三菱電機社製の950MHz帯RFID用アンテナであるRF-ATCP001(円偏波 最大利得6dBi)を用いた。
固定減衰器R3には、ヒロセ電機製のAT-107(減衰量 7dB)を用いた。
なお、リーダライタR1、読み取りアンテナR2、および固定減衰器R3が、データ読み取り装置R10を構成する。
発泡スチロール201には、420mm(長さ)×160mm(幅)×50mm(厚さ)のサイズの発泡スチロールを用いた。
金属板(金属製の被接着体)202には、250mm(長さ)×250mm(幅)×0.5mm(厚さ)のステンレス製の板を用いた。
本発明の実施例に係る銘板1の作製実験に先立ち、比較例として本体部30に間隔保持板13が取り付けられていない銘板の作製実験を行った。
本実験では、アンテナエレメント18、19の寸法を9mm×5mmとし、エレメント長が極端に短いアンテナエレメントを用いた。
図6に示すように、銘板301を、発泡スチロール201の上面の中央部に本体部30が位置するように置いて、データ読み取り装置R10に接続された読み取りアンテナR2によって、通信距離(データ読み取り装置R10が非接触で情報を読み取ることができる距離の最大値)の測定を行った。なお、測定の際の読み取り方向は、非接触ICラベル10が配置された面(本体部30の第一の面30a)を表面とし、その面とは反対の面(本体部30の第二の面30b)を裏面として、本体部30の天地を替えて双方の面からの読み取りを行った。
実験に使用したリーダライタR1および読み取りアンテナR2は、非接触ICラベル10を取り付けた本体部30をある程度の通信距離にて読み取ることが可能なUHF帯高出力リーダライタおよびアンテナである。リーダライタR1の最高出力は1W(30dBm)であるが、実験環境の都合上リーダライタR1と読み取りアンテナR2とを結ぶ同軸ケーブル上に-7dBの固定減衰器R3を接続し、リーダライタR1の出力を0.2W(23dBm)に減衰させて実験を行った。
本体部30の第一の面30aの中央部に、非接触ICラベル10の長手方向が本体部30の長手方向と平行になるように非接触ICラベル10を配置して、比較例となる銘板301を構成した。その状態において、銘板301の通信距離の測定を行った。
通信距離の測定結果を以下に示す。
表面:175mm
裏面:読み取り不能
測定結果より、表面からの読み取りにおける通信距離は良好であるが、裏面からの読み取りはできなかった。
本体部30の第一の面30aにおいて、平面視で図2に示す位置(長辺30cにおける中央部の縁部)に、非接触ICラベル10の長手方向が本体部30の長手方向と平行になるように非接触ICラベル10を配置して、比較例となる銘板302を構成した。銘板302には、間隔保持板13は取り付けられていない。
その状態において、銘板302の通信距離の測定を行った。
通信距離の測定結果以下に示す。
表面:335mm
裏面:215mm
測定結果より、表面からの読み取りにおける通信距離は、1-1の実験で示した銘板301の通信距離よりも向上した。さらには、銘板302の裏面からの読み取りも確認できた。
ここでは、本体部30の第一の面30aに取り付けられた間隔保持板13において、前述の収納室46の封止機能に加え、外部の読み取り装置との間の通信距離性能に関わるもう一つの機能についても説明する。
本実施例の銘板1を用いて、間隔保持板13の厚さを変えた実験を、前述の実験1、2の発泡スチロール201に代えてステンレス製の金属板202を用いて、実験1、2と同じ方法で行った。
なお、銘板1の本体部30および非接触ICラベル10は、図2および図3に示すような形態であり、非接触ICラベル10は本体部30に設けた穴部31の底面31aに貼り付けられている。そして、銘板1の間隔保持板13を金属板202に取り付けて実験を行った。
本発明の実施形態に係る銘板1は、金属製の被接着体の外面に貼り付けられ、その貼り付けられた状態において、外部のデータ読み取り装置との間で非接触にて通信を行うことを目的としている。よって本実験では、金属製の被接着体としてステンレス製の金属板202を用いて実験を行った。なお使用した金属板202の寸法は、250mm(長さ)×250mm(幅)×0.5mm(厚さ)という大きさであり、この寸法はリーダライタR1の交信電磁波の周波数に共振しない大きさである。
本体部30の第一の面30aに間隔保持板13を密着させて、第二の面30bを読み取りアンテナR2と対向させて測定を行った。なお本実験では、銘板1に保持板用接着層42および銘板用接着層43は設けられていない。これは、銘板1の通信距離の測定結果に接着層42、43はほとんど影響を与えないことが分かっているからである。
この実験による通信距離の測定結果(グラフ)を、図7に示す。
図7に示すように、間隔保持板13の厚さを厚くすることで、通信距離がほぼ直線的に増大することがわかった。500μmの厚さにおいて、発泡スチロール201上に置いて測定した通信距離と近い値になり、厚さが500μmを越える領域ではさらに通信距離が増大している。3000μmの厚さではその通信距離は2000mm以上に達している。
このように、間隔保持板13の厚さを500μmより大きく3000μm以下とすることで、銘板1を薄く構成しつつ、データ読み取り装置R10との通信距離を増大させることができる。なお、間隔保持板13の厚さは、1500μm以上2750μm以下とすることがより好ましい。
つまり、本体部30がパッチアンテナの放射エレメントとして機能し、一方の金属板202が同アンテナの導体地板として機能することで、パッチアンテナと同様の作用が生じ、その放射指向性がデータ読み取り装置R10側(電磁波到来方向)に集中し、通信距離が増大していると考えられる。パッチアンテナは、導体地板の面積を大きくすることで理論的には最大で約9dBの指向性特性を有するとされており、実験結果の通信距離の増大量は、このパッチアンテナの指向性特性の最大値から類推することができる。
磁性シート11、通信部12、間隔保持板13、および基材20のそれぞれは、薄く形成することができるため、非接触ICラベル10そして銘板1を薄型に構成することができる。
間隔保持板13の厚さを500μmより大きく3000μm以下とすることで、非接触ICラベル10および銘板1を薄く構成しつつ、データ読み取り装置R10との通信距離をさらに増大させることができる。
非接触ICラベル10を用いて銘板1を構成することで、データ読み取り装置R10と通信しつつ、本体部30の第二の面30bに表示Wを設けることができる。
本体部30の穴部31内に磁性シート11、通信部12、および基材20が収容され、間隔保持板13が穴部31を覆うように本体部30に取り付けられている。このため、収納室46内に収容された磁性シート11、通信部12、および基材20を、液体、ダスト、湿気、またはガスなどから保護する封止機能も併せて有する。
本実施形態の銘板1によれば、使用目的に合わせて間隔保持板13の厚さ(本体部30と金属板202との間隔)を設定することで、銘板1とデータ読み取り装置R10との間で良好な通信を行うことができる。
なお、本実験では間隔保持板13の厚さの上限を3000μmとしたが、通信距離を重視した銘板1が必要であれば、間隔保持板13の厚さを3000μm以上とすることで通信距離はさらに増大すると考えられる。
非接触ICラベル10を、図2に示す一方の長辺30cにおける中央部の縁部と、本体部30の他方の長辺30dにおける中央部の縁部とにそれぞれ貼り付け、2つの非接触ICラベル10が同時に読み取れるかの実験を行った。
実験に用いたデータ読み取り装置R10は、複数同時読み取り(アンチコリジョン)機能を有しているので、同じデータ読み取り装置で実験が可能である。
実験の結果、どちらの非接触ICラベル10も良好に読み取れることがわかった。このことから、複数の非接触ICラベル10を本体部30に設けることが可能となり、例えば、数十年という長期の管理を要する金属製の被接着体に取り付けて用いた場合、信頼性を得るためのバックアップ用の非接触ICラベル10も、予め銘板1内に装備できる。
非接触ICラベル10は、絶縁性のシート用接着層41で収納室46の内壁に貼り付けられており、さらには内部抵抗が高い磁性シート11上にアンテナエレメント18、19、およびICチップ16が設けられている。従って、非接触ICラベル10は単体でもサージ等の電気的な衝撃には強い層構成を有しているといえる。
また、本体部30の厚さは、実施形態では1mmとしているが、銘板が極端に厚くなければ、本体部30の厚さの違いによる通信性能の優劣はほとんどないことがわかっている。
一方、本体部30の厚さが薄い場合であっても、例えば、本体部30に生じる高周波電流がストレスなく流せる厚さを有していれば、本体部30が金属蒸着膜のような薄い金属体で形成されていてもかまわない。
一方、磁性シート11の厚さは、実施例では350μmとしたが、本体部30が放射アンテナとして機能するための必要な厚さを有していればよい。データとしては示さないが、磁性シート11の厚さが350μm以下の場合には通信距離が低下する傾向がある。なお、磁性シート11の厚さが350μm以上の場合の評価は行っていない。
次に、本発明の第2実施形態について説明するが、前記実施形態とは異なる点についてのみ説明する。
前述の金属製の被接着体には、ボイラー、電気ヒーター、内燃機関、蒸気タービン、モーター、または光源などのように、高温になる、または高温の乾燥炉を通過する被接着体など一時的に高温環境下に晒される被接着体が含まれる。これらの被接着体に銘板を取り付ける場合には、銘板が通信性能に加え、高温に対する耐熱性能も有することが必須となる。
基本構造は変えずに、各構成部材の耐熱温度の引き上げを行うことで、銘板の耐熱性を高めることとした。その内容を以下に詳しく説明する。
ただし、この場合、基材の材料が変わることで材料が持つ誘電率の値が変わるので、インピーダンス整合回路部の最適化をおこなう必要が生じる。
しかしながらこの実装方法では、使用温度の上限である200℃の環境下においては、ACPの耐熱温度が低すぎるためICチップ16とインピーダンス整合回路部17との電気的な接続が保証されない。
よって、この接合法を用いることで、使用温度の上限である200℃の環境での電気的な接続信頼性を得ることができる。
磁性シート11の透磁率及び磁性損失の値は、使用している磁性粒子または磁性フレークの造形、方向、及び密度などによって決定される。一方の誘電率及び誘電損失の値は、磁性粒子または磁性フレークの造形、方向、密度に加え、バインダー(結合剤)の誘電率、及び誘電損失によって決定される。
しかし、この二つのパラメーターはアンテナ特性への影響は前述のとおり少ないため、インピーダンス整合回路部の最適化をおこなうことで、耐熱バインダーへの変更に伴う非接触ICラベルとしての通信性能の低下はほとんどないと考えられる。
ただし、間隔保持板の材料が変わることで材料が持つ誘電率の値が変わるので、前述のとおり、使用目的に合わせて通信距離に対する厚さの再設定が必要である。
接着層41、42、43は、耐熱温度が200℃を超えるアクリル系またはシリコーン系の材料を好適に用いることができる。
以上のように熱対策を施した銘板は、読み取り装置との通信実験は行わないが、前述の第1実施形態の銘板1とほぼ同じ通信距離の結果が得られると考える。
また、本実施形態の非接触ICラベルおよび銘板では、磁性シート、アンテナエレメント、間隔保持板、および基材が耐熱性を有するため、使用温度の上限である200℃の環境でも耐えられる非接触ICラベルを構成することができる。
さらに、本実施形態の非接触ICラベルおよび銘板では、本体部および接着層41、42、43が耐熱性を有するため、使用温度の上限である200℃の環境でも耐えられる銘板を構成することができる。
本実施形態では、使用温度の上限の目標値は200℃であるが、銘板に使用している構成部材の中で耐熱温度の最も低い部材が支障になるので、その部材の耐熱温度を上げることができれば、銘板全体としての使用温度の上限値を引き上げることができる。
次に、本発明の第3実施形態について図8を参照しながら説明するが、前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図8に示すように、本実施形態の銘板2は、第1実施形態の銘板1の非接触ICラベル10、本体部30に代えて、非接触ICラベル50、本体部60を備えている。
間隔保持部材53は、平面視で矩形の板状に形成され、一方の面には、凹部54が形成され、他方の面には複数の突起部55が形成されている。凹部54は、磁性シート11、通信部12、および基材20を収容可能な大きさに形成されている。
本体部60は、平面視において間隔保持部材53と同一の矩形の板状に形成されている。本体部60は、前記実施形態の本体部30と同一の材料で形成されている。
本体部60の第一の面60aには、シート用接着層41が設けられている。磁性シート11の他方の面11b、および間隔保持部材53の一方の面は、凹部54内に磁性シート11、通信部12、および基材20を収容した状態でシート用接着層41に貼り付けられている。
本体部60に間隔保持部材53が取り付けられたときに、本体部60と間隔保持部材53の凹部54とにより、収納室56が形成される。
銘板2は、嵌合孔252に突起部55を圧入することで、被接着体250の収容部251に接着層を介することなく取り付けられている。
被接着体250の収容部251に銘板2を取り付けたときに、被接着体250の外面と、本体部60の第二の面60bとがほぼ同一面上になるように設定されている。これにより、被接着体250から銘板2が突出することが防止されている。
収容部251が凹んだ深さを大きくすることが可能であれば、その分間隔保持部材53を厚くできるので、前述の通り銘板2の通信距離をさらに伸ばすこともできる。
収容部251の内面と銘板2の外周面との間に形成される隙間260を、不図示の公知の封止材料で埋めることもできる。本体部60および封止材料の色を、被接着体250と同色もしくは近似色にすることで、隙間260を含め銘板2の存在を視覚的に隠蔽することが可能である。従って、被接着体250の価値を高めることもできる。
たとえば、前記第1実施形態から第3実施形態では、インピーダンス整合回路部及びアンテナエレメントが比較的厚く形成され扱いやすい場合には、非接触ICラベルに基材を含むことなく、インピーダンス整合回路部及びアンテナエレメントを磁性シートの一方の面に直接形成してもよい。
本発明の使用用途を銘板としているが、本発明の使用用途はこれに限らず、汎用的な無線通信機器、RFIDタグ等として利用してもかまわない。例えば、無線データ収集装置、金属対応RFIDタグ、アクティブRFIDタグなどであってもよい。
10、50 非接触ICラベル
11 磁性シート
11a 一方の面(第1磁性面)
11b 他方の面(第2磁性面)
13 間隔保持板(間隔保持部)
18 第1のアンテナエレメント(第1のアンテナ部)
19 第2のアンテナエレメント(第2のアンテナ部)
20 基材
20a 主面
30、60 本体部
30c 長辺
31 穴部
41 シート用接着層(接着層)
53 間隔保持部材(間隔保持部)
D 厚さ方向(第2の厚さ方向)
Claims (11)
- 磁性シートと、
前記磁性シートの第1磁性面に設けられたICチップと、
前記第1磁性面に設けられかつ前記ICチップに接続された第1のアンテナ部および第2のアンテナ部と、
誘電体により形成された間隔保持部と、
を備え、
前記磁性シートと前記間隔保持部との間に、前記ICチップ、前記第1のアンテナ部、および前記第2のアンテナ部が配置されることを特徴とする非接触ICラベル。 - 前記磁性シート、前記第1のアンテナ部、前記第2のアンテナ部、および前記間隔保持部が耐熱性を有していることを特徴とする請求項1に記載の非接触ICラベル。
- フィルム状に形成され耐熱性を有する基材をさらに備え、
前記ICチップ、前記第1のアンテナ部、および前記第2のアンテナ部は、前記基材の主面上に設けられた状態で、前記磁性シートの第1磁性面に配置されていることを特徴とする請求項1または2に記載の非接触ICラベル。 - 前記ICチップと前記第1のアンテナ部、および前記ICチップと前記第2のアンテナ部は、超音波接合によって金属溶接されていることを特徴とする請求項1から3のいずれか一項に記載の非接触ICラベル。
- 前記磁性シートは、磁性粒子または磁性フレークと、バインダーとで形成され、
前記バインダーにはシリコーン系樹脂、フッ素系樹脂、エポキシ硬化系樹脂、ポリエーテルサルホン系樹脂、及びポリイミド系樹脂のうち少なくとも1つが用いられていることを特徴とする請求項1から4のいずれか一項に記載の非接触ICラベル。 - データ読み取り装置と電波方式を用いて通信することを特徴とする請求項1から5のいずれか一項に記載の非接触ICラベル。
- 前記間隔保持部における前記磁性シートの厚さは、0.5mmより大きく3mm以下であることを特徴とする請求項1から6のいずれか一項に記載の非接触ICラベル。
- 請求項1から7のいずれか一項に記載の非接触ICラベルと、
金属部材を有する板状の本体部と、
を備え、
前記非接触ICラベルは、前記磁性シートの前記第1磁性面とは反対の面である第2磁性面を接着層を介して前記金属部材に貼り付けることで前記金属部材に取り付けられていることを特徴とする銘板。 - 前記本体部は、平面視において矩形状に形成され、
前記非接触ICラベルは、平面視における前記本体部の長辺における中央部の縁部に設けられていることを特徴とする請求項8に記載の銘板。 - 前記本体部の第一の面には、前記非接触ICラベルの一部を収容する穴部が形成され、
前記間隔保持部が前記穴部を覆うように前記本体部の第一の面に取り付けられていることを特徴とする請求項8または9に記載の銘板。 - 前記本体部および前記接着層が耐熱性を有していることを特徴とする請求項8から10のいずれか一項に記載の銘板。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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CN201380024988.9A CN104303196B (zh) | 2012-06-13 | 2013-06-13 | 非接触ic标签及铭牌 |
EP13804523.2A EP2833297A4 (en) | 2012-06-13 | 2013-06-13 | CONTACTLESS IC LABEL AND IDENTIFICATION TAG |
KR1020157000496A KR20150022992A (ko) | 2012-06-13 | 2013-06-13 | 비접촉 ic 라벨 및 명판 |
JP2014521403A JP6142873B2 (ja) | 2012-06-13 | 2013-06-13 | 非接触icラベルおよび銘板 |
US14/567,351 US9519855B2 (en) | 2012-06-13 | 2014-12-11 | Non-contact IC label and nameplate |
HK15106589.7A HK1206124A1 (en) | 2012-06-13 | 2015-07-10 | Non-contact ic label and nameplate ic |
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JP2012-134296 | 2012-06-13 | ||
JP2012134296 | 2012-06-13 |
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US14/567,351 Continuation US9519855B2 (en) | 2012-06-13 | 2014-12-11 | Non-contact IC label and nameplate |
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WO2013187473A1 true WO2013187473A1 (ja) | 2013-12-19 |
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PCT/JP2013/066348 WO2013187473A1 (ja) | 2012-06-13 | 2013-06-13 | 非接触icラベルおよび銘板 |
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US (1) | US9519855B2 (ja) |
EP (1) | EP2833297A4 (ja) |
JP (1) | JP6142873B2 (ja) |
KR (1) | KR20150022992A (ja) |
CN (1) | CN104303196B (ja) |
HK (1) | HK1206124A1 (ja) |
WO (1) | WO2013187473A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2021065926A1 (ja) * | 2019-10-02 | 2021-04-08 | ナブテスコ株式会社 | センサ装置、減速機、クローラ用走行ユニット、流体バルブ、流体シリンダ、流体ポンプ、流体コンプレッサ、電動モータ、電動アクチュエータ、構造物、センサ装置が実行する方法、センサシステムおよび銘板 |
Families Citing this family (7)
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EP3287956B1 (en) * | 2015-04-22 | 2023-12-13 | Toyo Seikan Group Holdings, Ltd. | Rf tag |
WO2017069415A1 (en) * | 2015-10-20 | 2017-04-27 | Lg Electronics Inc. | A sensor and method for manufacturing the sensor |
CN107480752A (zh) * | 2017-07-28 | 2017-12-15 | 北京计算机技术及应用研究所 | 一种柔性超高频电子铭牌 |
TWI686992B (zh) * | 2018-10-25 | 2020-03-01 | 韋僑科技股份有限公司 | 天線結構以及應用該天線結構之裝置 |
CN109935158B (zh) * | 2019-03-14 | 2021-05-04 | 上海妙可士材料科技有限公司 | 电子标签 |
JP7377490B2 (ja) * | 2019-11-19 | 2023-11-10 | 大王製紙株式会社 | Rfidタグ |
DE102020121117B3 (de) | 2020-08-11 | 2021-11-25 | Kekz Gmbh | Interaktives Kopfhörer-System und Kopfhörer zum Speichern und zur Wiedergabe von Audioinhalten |
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2013
- 2013-06-13 WO PCT/JP2013/066348 patent/WO2013187473A1/ja active Application Filing
- 2013-06-13 EP EP13804523.2A patent/EP2833297A4/en not_active Withdrawn
- 2013-06-13 JP JP2014521403A patent/JP6142873B2/ja active Active
- 2013-06-13 KR KR1020157000496A patent/KR20150022992A/ko not_active IP Right Cessation
- 2013-06-13 CN CN201380024988.9A patent/CN104303196B/zh active Active
-
2014
- 2014-12-11 US US14/567,351 patent/US9519855B2/en active Active
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2015
- 2015-07-10 HK HK15106589.7A patent/HK1206124A1/xx unknown
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WO2021065926A1 (ja) * | 2019-10-02 | 2021-04-08 | ナブテスコ株式会社 | センサ装置、減速機、クローラ用走行ユニット、流体バルブ、流体シリンダ、流体ポンプ、流体コンプレッサ、電動モータ、電動アクチュエータ、構造物、センサ装置が実行する方法、センサシステムおよび銘板 |
JPWO2021065926A1 (ja) * | 2019-10-02 | 2021-04-08 | ||
JP7320798B2 (ja) | 2019-10-02 | 2023-08-04 | ナブテスコ株式会社 | センサ装置、減速機、構造物、センサ装置が実行する方法、センサシステムおよび銘板 |
TWI819242B (zh) * | 2019-10-02 | 2023-10-21 | 日商納博特斯克股份有限公司 | 感測裝置、構造物、感測裝置所執行之方法、感測系統及銘牌 |
Also Published As
Publication number | Publication date |
---|---|
CN104303196A (zh) | 2015-01-21 |
US9519855B2 (en) | 2016-12-13 |
EP2833297A4 (en) | 2015-11-25 |
HK1206124A1 (en) | 2015-12-31 |
CN104303196B (zh) | 2017-08-15 |
EP2833297A1 (en) | 2015-02-04 |
KR20150022992A (ko) | 2015-03-04 |
JPWO2013187473A1 (ja) | 2016-02-08 |
US20150090801A1 (en) | 2015-04-02 |
JP6142873B2 (ja) | 2017-06-07 |
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