JP2012234250A - Communication performance inspection device for rfid information medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication performance inspection device for RFID information media capable of properly inspecting communication performance of individual RFID information media 4 by radiating a radiation radio wave (inspection wave W1) from an antenna module 10 to only each RFID information medium (label piece 4) to be inspected without affecting an adjacent RFID information medium 4 by the inspection wave W1.SOLUTION: The present invention focuses on storing an antenna module 10 in a radio wave blocking body 21 and providing radio wave absorbing bodies 27 in the radio wave blocking body 21. The inventive communication performance inspection device includes the radio wave blocking body 21 for storing the antenna module 10 and the radio wave absorbing bodies 27 attached to inner wall faces of the radio wave blocking body 21. The radio wave blocking body 21 is formed with an inlet 28 and an outlet 29 for an RFID continuous body (label continuous body 1). Each RFID information medium 4 of the RFID continuous body 1 conveyed into the radio wave blocking body 21 from the inlet 28 faces the antenna module 10.

Description

  The present invention relates to an RFID (Radio Frequency Identification) information medium communication performance inspection device, in particular, an RFID continuous body in which a plurality of RFID information media are connected is transferred, and the communication performance of each RFID information medium is improved. The present invention relates to an RFID information medium communication performance inspection device for inspection.

  Conventionally, an RFID information medium having an IC chip and an RFID antenna and capable of wirelessly writing and reading data is in the form of a label or a tag, and various data on various items are read and written. It is used in various fields such as data management.

FIG. 2 is a plan view showing an example of a conventional RFID information medium. FIG. 2A shows a form of a label continuous body 1 (RFID continuous body) using the RFID information medium, and FIG. Shows a form of a tag continuum 2 (RFID continuum) using an RFID information medium.
As shown in FIG. 2 (1), the label continuum 1 has a plurality of single-sheet label pieces 4 (RFID information media) temporarily attached on a belt-like mount 3, and is attached to the back side of the label piece 4. Forms a pressure-sensitive adhesive layer 5 so that the label piece 4 can be peeled off from the mount 3 and attached to a predetermined article (not shown).
The label piece 4 has an IC chip 6 and an RFID antenna 7, UHF band (300 MHz to 3 GHz (preferably 860 to 960 MHz, more specifically, 433 MHz, 900 MHz, 920 to 925 MHz, 950 to 956 MHz) and microwaves. (1-30 GHz, specifically 2.45 GHz), HF band (3 MHz to 30 MHz (preferably 13.56 MHz)), 135 kHz or less, etc. 7, wireless reading and writing (data communication) of data necessary for the IC chip 6 is performed.
However, the specific configurations of the IC chip 6 and the RFID antenna 7 are appropriate according to the radio waves used.

As shown in FIG. 2 (2), the tag continuum 2 does not have the mount 3 in the label continuum 1, and a plurality of tag pieces 8 (RFID information media) are connected in series and can be separated at the perforation 9. It is said.
Similar to the label piece 4, the tag piece 8 has an IC chip 6 and an RFID antenna 7 to enable wireless data communication.

It is necessary to inspect the communication performance of each of the label piece 4 in the label continuum 1 and the tag piece 8 in the tag continuum 2.
FIG. 3 is a schematic side view showing the antenna module 10 for inspecting the communication performance and the label continuum 1 as an example of the inspection target.
The antenna module 10 has a function as a reader / writer for data communication with the label piece 4. The label continuous body 1 is transferred to face the antenna module 10, and the label piece of the label continuous body 1 is transferred from the antenna module 10. 4 is irradiated with an inspection radio wave W1 to inspect its communication performance.

However, for data communication with the label continuum 1, especially in the case of using a radio wave having a wavelength in the UHF band (for example, 950 MHz), the communication distance is usually about 5 to 10 m, In the case where the label pieces 4 such as the body 1 are continuous, the label pieces 4 cannot be separated and inspected one by one. Therefore, the adjacent label pieces 4 other than the label pieces 4 to be inspected are also used for inspection. There is a problem that it is difficult to perform an accurate inspection, for example, misreading occurs when the radio wave W1 is irradiated.
Therefore, there is a problem that it is usually necessary to place the antenna module 10 in the very vicinity of the label continuum 1 and inspect it under a virtual condition with weak radio waves with low output.
In addition, there is a problem that the inspection position (communication position) of the label continuum 1 with respect to the antenna module 10 needs to be set very tightly in order to inspect the communication performance with weak radio waves in order to avoid misreading.
Further, if the output of the irradiation wave (inspection radio wave W1) by the antenna module 10 is increased, the inspection radio wave W1 emitted from the antenna module 10 is reflected back to the wall or ceiling as well as misreading the adjacent label pieces 4. There is a problem that it is difficult to perform an accurate performance test due to the influence of the reflected wave W2.

    Of course, the label continuum 1 and the tag continuum 2 using other frequency bands with a relatively short communication distance have similar problems.

JP 2006-127075 A

    The present invention has been considered in view of the above problems, and it is an object of the present invention to provide an RFID information medium communication performance inspection device capable of appropriately inspecting the communication performance of individual RFID information media configured as an RFID continuum. Let it be an issue.

    It is another object of the present invention to provide an RFID information medium communication performance inspection device that does not affect the adjacent RFID information medium by irradiation radio waves (inspection radio waves).

    It is another object of the present invention to provide an RFID information medium communication performance inspection apparatus capable of irradiating only an RFID information medium to be inspected with an irradiation radio wave from an antenna module.

    In addition, the present invention irradiates a radio wave for inspection at an appropriate level without setting the antenna module to a low output and a nearby installation type, and sets the interval between each RFID information medium to be inspected so tightly. It is an object of the present invention to provide a communication performance inspection device for an RFID information medium that is not necessary.

    It is another object of the present invention to provide an RFID information medium communication performance inspection device capable of reducing the influence of reflected waves of irradiation radio waves from an antenna module.

    That is, the present invention focuses on storing an antenna module in a radio wave blocking body and providing a radio wave absorber inside the radio wave blocking body, and a plurality of RFID information media capable of wireless data communication are connected in series. An RFID information medium communication performance inspection apparatus for inspecting the communication performance of the RFID information medium by irradiating the RFID continuum with an inspection radio wave from the antenna module, the radio wave blocking body storing the antenna module; A radio wave absorber that is attached to the inner wall surface of the radio wave blocker, and the radio wave blocker has an inlet and an outlet port for the RFID continuous body formed therein, and the radio wave blocker from the inlet port. The RFID information medium of the RFID continuum transferred to the antenna is opposed to the antenna module. A communication performance inspection apparatus broadcast medium.

    The radio wave blocking body has a support base for the RFID continuum that is transferred from the introduction port to the lead-out port, and an irradiation support base slit is formed on the support base, and the irradiation support base slit is formed. A single RFID information medium can be made to face the antenna module.

    The radio wave absorber may be provided on a surface of the support base facing the antenna module.

    The radio wave absorber provided on the surface of the support table facing the antenna module may have an irradiation absorber slit corresponding to the irradiation support table slit of the support table.

    The support base may partition the inside of the radio wave blocking body into a transfer space portion of the RFID continuous body and a storage space portion of the antenna module.

    The antenna module can be movably attached to the RFID continuum inside the radio wave blocking body.

    A distance measuring device capable of measuring a distance between the antenna module and the RFID information medium can be provided.

    In the RFID information medium communication performance inspection apparatus according to the present invention, the antenna module is stored in the radio wave blocking body and the radio wave absorber is provided in the radio wave blocking body, so that the influence of the reflected wave from the outside is blocked. Furthermore, the radio waves for inspection irradiated from the antenna module can be concentrated on the RFID continuum such as the label continuum and the tag continuum, and the communication without affecting the RFID information medium such as the adjacent label piece or tag piece. The performance can be checked.

1 is a longitudinal sectional view of an RFID information medium communication performance inspection device 20 according to an embodiment of the present invention. FIG. 2A is a plan view showing an example of a conventional RFID information medium. FIG. 2A shows a form of a label continuous body 1 (RFID continuous body) using the RFID information medium, and FIG. The form of the tag continuous body 2 (RFID continuous body) by a medium is shown. FIG. 2 is a schematic side view showing the antenna module 10 for performing communication performance inspection and the label continuum 1 as an example of an inspection target.

    The present invention realizes a communication performance inspection apparatus for an RFID information medium in which a radio wave absorber is attached to a radio wave blocking body in which an antenna module is stored, and the communication performance can be inspected by limiting to a single RFID information medium.

Next, an RFID information medium communication performance inspection apparatus 20 according to an embodiment of the present invention will be described with reference to FIG. 2 and 3 are denoted by the same reference numerals, and detailed description thereof is omitted.
FIG. 1 is a longitudinal sectional view of a communication performance inspection device 20 for an RFID information medium, and the communication performance inspection device 20 has a radio wave blocking body 21 for storing the antenna module 10.
The radio wave blocking body 21 includes a support 22 provided across a support 22, an inspection housing 23 erected and supported on the support 22, a bottom plate 24 of the inspection housing 23, a canopy 25 of the inspection housing 23, and an inner upper portion of the inspection housing 23. The base 26 and the inner wall surface of the radio wave blocking body 21, the support base 26, and the radio wave absorber 27 attached to the antenna module 10 are included.

The radio wave blocking body 21 is made of a material capable of blocking radio waves, for example, an alloy such as stainless steel, metal such as iron, aluminum, and the like. Then, the inlet 28 and outlet 29 of the label continuum 1) are formed.
The label continuum 1 is held in a roll shape in the supply unit 30, is fed out in a band shape toward the communication performance inspection device 20, is transferred from the introduction port 28 into the radio wave blocking body 21, and the RFID information The medium (label piece 4 in the illustrated example) is made to face the antenna module 10 so that the performance thereof can be inspected, discharged from the outlet 29, and wound around the winding portion 31 in a roll shape.

A threaded rod 32 is attached to the bottom plate 24 so as to be rotatable by a knob 33, a module fixing plate 34 is fixed to the top of the threaded rod 32, and the antenna module 10 is fixed to the module fixing plate 34.
Thus, the antenna module 10 is movably attached to the label continuous body 1 so as to approach and separate from the label continuum 1 inside the radio wave blocking body 21.

Further, a distance measuring device 35 is provided on the module fixing plate 34.
The distance measuring device 35 includes a measuring rod 36 attached in parallel to the threaded rod 32 from the bottom of the module fixing plate 34, a pointer 37 attached to the tip of the measuring rod 36, and a distance measuring scale 38 attached to the bottom plate 24. Have.
Therefore, the distance between the label module 1 and the antenna module 10 that moves up and down in FIG.

    The canopy 25 is provided at the top of the inspection housing 23 so as to be openable and closable so that the inside of the radio wave blocking body 21 can be confirmed.

The support base 26 supports the lower surface of the label continuum 1 that is transferred from the inlet 28 to the outlet 29 of the radio wave interrupter 21.
An irradiation support base slit 39 having the same shape and size as the label piece 4 is formed on the support base 26, and only a single label piece 4 faces the antenna module 10 through the irradiation support base slit 39. To be able to.

    The support base 26 divides the inside of the radio wave blocking body 21 into a transfer space 40 of the label continuum 1 and a storage space 41 of the antenna module 10.

    If the label piece 4 of the label continuum 1 is the same size as the antenna module 10, or if the antenna module 10 is a small size equivalent to the label piece 4, the radio wave blocking body Since only the single label piece 4 can be positioned inside the 21, it is not necessary to provide the support base 26.

The radio wave absorber 27 is attached to all necessary surfaces of the inner wall surface of the radio wave blocker 21, and a radio wave absorber that can absorb radio waves in a predetermined frequency band can be used. For example, sintered bodies such as ferrite, magnetic powders and magnetic needle crystals, metal powders such as iron, metal processed into fibers, kneaded into synthetic rubber and synthetic resin, graphite and carbon Examples include fibers kneaded alone or together with a magnetic material.
As a specific electromagnetic wave absorbing sheet product used as the radio wave absorber 27, a pattern absorbing sheet manufactured by Nitta Corporation, product names: PFN10, PFN20 (2.4 GHz band), and PFN14-950M (UHF band) are preferable.
In the transfer space 40, a radio wave absorber 27 is provided on the inner peripheral surface of the inspection housing 23 and the inner wall surface of the canopy 25. In the storage space 41, the inner peripheral surface of the inspection housing 23 and the module fixing plate 34 are provided. A radio wave absorber 27 is provided on the lower surface of the support base 26 facing the antenna module 10 between the antenna module 10 and the antenna module 10.
The radio wave absorber 27 on the lower surface of the support base 26 corresponds to the irradiation support base slit 39 and corresponds to this, but an irradiation absorber slit 42 slightly narrower than the irradiation support base slit 39 is formed. ing.

    In the RFID information medium communication performance inspection apparatus 20 having such a configuration, the label continuum 1 is transferred from the inlet 28 to the outlet 29 of the radio wave blocking body 21 in the transfer space 40 and the antenna module 10 in the storage space 41. The inspection radio wave W1 can be irradiated to the single label piece 4 of the label continuous body 1 through the irradiation absorber slit 42 and the irradiation support slit 39.

The inspection radio wave W1 from the antenna module 10 can be accurately directed only to the single label piece 4 to be inspected, and the inspection radio wave W1 directed to the other adjacent label pieces 4 is particularly on the support base 26. While being absorbed by the radio wave absorber 27 affixed to the bottom surface, a reflected wave W2 (FIG. 3) is also generated inside the inspection housing 23 based on the inspection radio wave W1 that is irradiated on the portion other than the support base 26. Without being affected by the reflected wave W2.
Of course, radio waves from the outside of the radio wave blocking body 21 can be blocked by the radio wave blocking body 21, and radio waves that may intrude into the interior should be absorbed by the radio wave absorber 27. There is no risk of affecting the

Furthermore, the distance measuring device 35 can measure and confirm the distance between the label continuum 1 (label piece 4) and the antenna module 10.
Therefore, by changing the physical distance between the output of the antenna module 10 and the label piece 4 from the antenna module 10 based on the label piece 4 that is judged to be good at the actual inspection site and can be actually inspected. The communication performance can be stably and continuously inspected using the label piece 4 as a reference sample.

    In addition, the communication performance of the label continuous body 1 (label piece 4) can be inspected within a relatively narrow space-saving limited to the radio wave blocking body 21.

    It should be noted that the irradiation support base slit 39 of the support base 26 and the irradiation absorber slit 42 of the radio wave absorber 27 are made variable in size so that label pieces 4 and RFID antennas of various sizes can be obtained. 7 inspections are possible.

1 Label continuum (RFID continuum, Fig. 1, Fig. 2 (1))
2 Tag continuum (RFID continuum, Fig. 2 (2))
3 Mount 4 Label piece (RFID information medium)
5 Adhesive layer 6 IC chip 7 RFID antenna 8 Tag piece (RFID information medium)
9 Perforation 10 Antenna module 20 RFID information medium communication performance inspection device (Example, FIG. 1)
21 Radio wave blocking body 22 Support column 23 Inspection housing 24 Bottom plate 25 Canopy 26 Support base 27 Radio wave absorber 28 Inlet 29 Outlet 30 Label continuous body 1 supply part 31 Label continuous body 1 winding part 32 Threaded rod 33 Knob 34 Module fixing plate 35 Distance measuring device 36 Measuring rod 37 Pointer 38 Distance measuring scale 39 Supporting slit for irradiation 40 Transfer space 41 Storage space 42 Irradiation absorber slit W1 Radio wave for inspection (FIGS. 1 and 3)
W2 reflected wave (Fig. 3)

Claims (7)

Communication performance of an RFID information medium for inspecting the communication performance of the RFID information medium by irradiating an inspection radio wave from an antenna module to an RFID continuous body in which a plurality of RFID information media capable of wireless data communication is connected. An inspection device,
A radio wave blocking body for storing the antenna module;
A radio wave absorber attached to the inner wall surface of the radio wave blocker,
The radio wave blocking body has an inlet and an outlet for the RFID continuum, and
An RFID information medium communication performance inspection apparatus, wherein the RFID information medium of the RFID continuum transferred from the inlet to the radio wave blocking body is opposed to the antenna module. The radio wave blocking body has a support base for the RFID continuum that is transferred from the inlet to the outlet.
An irradiation support base slit is formed in the support base, and the single RFID information medium can be opposed to the antenna module through the irradiation support base slit. The RFID information medium communication performance inspection device according to 1.     3. The RFID information medium communication performance inspection apparatus according to claim 2, wherein the radio wave absorber is provided on a surface of the support base facing the antenna module.     An irradiation absorber slit is formed on the radio wave absorber provided on the surface of the support table facing the antenna module, corresponding to the irradiation support table slit of the support table. Item 4. An RFID information medium communication performance inspection device according to Item 3.     The said support stand divides the inside of the said electromagnetic wave shielding body into the transfer space part of the said RFID continuous body, and the storage space part of the said antenna module, The Claim 2 thru | or 4 characterized by the above-mentioned. RFID information medium communication performance inspection device.     6. The communication performance inspection of an RFID information medium according to claim 1, wherein the antenna module is movably attached to the RFID continuum inside the radio wave blocking body. apparatus.     7. The RFID information medium communication performance inspection apparatus according to claim 1, further comprising a distance measuring device capable of measuring a distance between the antenna module and the RFID information medium.

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