JP2018205927A - Sign with rfid - Google Patents

Abstract

To provide a sign with an RFID for preventing reading or writing from being mistakenly performed on an RFID medium corresponding to a storage box arranged in a stage lower than that having a target storage box, with reading or writing operations for the RFID medium, in a component management using pipe assembly type storage racks where a plurality of storage boxes can be stacked to be arranged.SOLUTION: A sign 10 with an RFID includes: an RFID medium 20 having an IC tip and a first antenna connected to the IC tip; a sheet-shaped second antenna 30 that extends orthogonal to a reading direction of the RFID medium 20 and an extending direction of the first antenna and that has one end part arranged close to the first antenna; and an electrical conductor 40 that is close to an end part on a side opposite to a side, of the first antenna, being close to the second antenna 30 and that extends in an extending direction of the second antenna 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a Kanban board with RFID.

  In production sites such as factories, a plastic storage box is placed in the frame of a pipe assembly-type storage shelf assembled by joining metal pipes with joints, and specified parts are stored in the storage box. Thus, a method for managing parts is performed. The pipe assembly-type storage shelf can be arranged by stacking a plurality of storage boxes. In such a part management method, a part in which information (part name, part number, placement location, etc.) regarding the part accommodated in each storage box is described on the front of the storage shelf (surface facing the worker). A management card is affixed.

  In recent years, RFID (Radio Frequency IDentification) has been used in order to efficiently manage parts as the number of parts in production sites increases and parts become more complex. The RFID performs information on the RFID medium by performing short-distance wireless communication using an electromagnetic field, a radio wave, or the like between an electronic device called an RFID medium and an information reading / writing device (reader / writer). Is written in a non-contact manner or information is read out from the RFID medium in a non-contact manner.

  In such a component management method using an RFID medium, erroneous reading of information or reading out may occur. In view of this, various methods have been devised for managing parts using the RFID medium to prevent misreading of information and overwriting. For example, there is known a method of accurately reading information from an RFID medium by adjusting the directivity of the antenna provided in the RFID medium so that the antenna can be read from only one direction (for example, Patent Documents). 1 and 2).

Japanese Patent No. 4324059 Japanese Patent No. 4359198

However, when a conventional RFID medium is affixed to the front surface (the surface facing the operator) of the above-mentioned component management card, and components are taken into and out of the storage box, the information reading / reading mounted on the back of the operator's hand When a writing device tries to read information about a part, the information may be read over. This is a phenomenon caused by the weak directivity of the antenna provided in the RFID medium at the position where the operator's hand moves with respect to the pipe assembly type storage shelf.
In addition, when a conventional RFID medium is attached to the front of the above-mentioned component management card, the information reading / writing device reads the information related to the component only when the worker approaches the component management card. There was a case. For this reason, there has been a case where a reading error occurs in which information of other unintended parts (for example, parts in an adjacent storage box) is read. This is a phenomenon caused by a strong electromagnetic field and radio wave radiation intensity from the antenna provided in the RFID medium on the front side of the component management card.
Also, in parts management using a pipe-assembled storage shelf in which a plurality of storage boxes can be stacked and placed, a storage box placed below the target storage box by a read or write operation on the RFID medium In some cases, information regarding parts is erroneously read or written on the RFID medium corresponding to the above.

  The present invention has been made in view of the above circumstances, and in parts management using a pipe-assembled storage shelf capable of stacking and arranging a plurality of storage boxes, by reading or writing operation on an RFID medium, An object of the present invention is to provide an RFID-equipped kanban that prevents reading or writing from being erroneously performed on an RFID medium corresponding to a storage box arranged at a lower level than a target storage box.

  The Kanban board with RFID of the present invention has an RFID chip having an IC chip and a first antenna connected to the IC chip, and extends perpendicular to the reading direction of the RFID medium and the direction in which the first antenna extends. A planar second antenna having one end disposed adjacent to the first antenna, and an end on the opposite side of the first antenna from the side adjacent to the second antenna; And a conductor extending along a direction in which the second antenna extends.

  In the Kanban board with RFID of the present invention, it is preferable that the RFID medium is provided on a first member, and the second antenna is provided on a second member detachable from the first member.

  In the Kanban board with RFID of the present invention, it is preferable that the other end portion of the second antenna that is not close to the first antenna extends in a direction away from the RFID medium.

  According to the present invention, in parts management using a pipe assembly-type storage shelf in which a plurality of storage boxes can be stacked and arranged, the read or write operation on the RFID medium is arranged below the target storage box. It is possible to provide a Kanban board with RFID that prevents an RFID medium corresponding to the stored storage box from being erroneously read or written.

It is a figure which shows the principal part structure of the Kanban with RFID by embodiment of this invention, Comprising: (A) is a front view, (B) is a top view. It is a back view which shows the principal part structure of the kanban with RFID by embodiment of this invention. It is a side view which shows the principal part structure of the kanban with RFID by embodiment of this invention. It is a perspective view which shows the principal part structure of the kanban with RFID by embodiment of this invention. It is a top view which shows the RFID medium which comprises the Kanban with RFID by embodiment of this invention. It is a perspective view which shows the usage method of the Kanban with RFID by embodiment of this invention.

An embodiment of a Kanban board with RFID of the present invention will be described.
Note that this embodiment is specifically described in order to better understand the gist of the invention, and does not limit the present invention unless otherwise specified.

A kanban with RFID according to an embodiment of the present invention will be described with reference to FIGS.
1A and 1B are diagrams showing the configuration of a main part of a Kanban board with RFID according to an embodiment of the present invention, where FIG. 1A is a front view and FIG. 1B is a top view. FIG. 2 is a back view showing the main configuration of the Kanban board with RFID according to the embodiment of the present invention. FIG. 3 is a side view showing the main configuration of the Kanban board with RFID according to the embodiment of the present invention. FIG. 4 is a perspective view showing a main configuration of the Kanban board with RFID according to the embodiment of the present invention. FIG. 5 is a plan view showing an RFID medium constituting the Kanban with RFID according to the embodiment of the present invention.

As shown in FIGS. 1 to 5, the Kanban board with RFID 10 of this embodiment includes an IC chip 21 and an RFID medium 20 having a first antenna 22 connected to the IC chip 21, a reading direction of the RFID medium 20, and A planar second antenna 30 extending perpendicularly to the direction in which the first antenna 22 extends and having one end 30A disposed in the vicinity of the first antenna 22; At the end (other end) 22B opposite to the side close to the antenna 30 (in FIG. 1, FIG. 2 and FIG. 4, it is at a position corresponding to the other end 20B in the longitudinal direction of the RFID medium 20). A conductor 40 that is adjacent and extends along a direction in which the second antenna 30 extends is generally configured.
In the Kanban board 10 with RFID of this embodiment, one end 30A of the second antenna 30 is connected to one end 22A of the first antenna 22 (in FIG. 1, FIG. 2 and FIG. 4, one end in the longitudinal direction of the RFID medium 20). 20A and a position corresponding to 20A).

  In the Kanban board with RFID 10, as shown in FIG. 1, the RFID medium 20 is provided on one surface (front surface) 50a of the first member 50 in the form of a film or a sheet, for example. The RFID medium 20 may be provided on the other surface (back surface) 50 b of the first member 50.

Moreover, in the Kanban board 10 with RFID, as shown in FIGS. 1 to 4, the second antenna 30 is provided on a second member 60 that can be attached to and detached from the first member 50.
As shown in FIGS. 1 and 4, the second member 60 is provided on a film-like or sheet-like accommodation member 70 that accommodates the first member 50, and the other surface (back surface) 70 b of the accommodation member 70. And a support member 80 that supports the member 70.
The housing member 60 and the support member 70 are joined via an adhesive material or an adhesive material.

  In the housing member 70, a film-like or sheet-like transparent base material 71 is folded in two, and one edge portion along the longitudinal direction of the laminated transparent base material 71 is welded to form a welded portion 72. By this, it is a bag-shaped (pocket-shaped) member in which two adjacent sides (two sides composed of the folding line 71A and the welded portion 72) are sealed. In FIGS. 1 and 4, the left end of the housing member 70 is a portion where the transparent base material 71 is folded back (folding line 71 </ b> A), and is a portion where the transparent base material 71 is continuous. Further, the welded portion 72 extends along the longitudinal direction of the housing member 70. Further, the housing member 70 is not sealed at two sides facing the sealed two sides (a side (short side) 71B facing the folding line 71A and a side (long side) 71C facing the welding portion 72). Only the transparent base material 71 is superposed. As described above, the storage member 70 is formed in a bag shape in which two sides are sealed, so that the first member 50 is interposed in the storage member 70, that is, between the stacked transparent base materials 71. can do. Further, the first member 50 housed in the housing member 70 can be easily taken out. In other words, the first member 50 is detachable from the second member 60.

As shown in FIGS. 1 to 4, the support member 80 is a member having a quadrangular prism shape, for example, and extends along the longitudinal direction of the housing member 70. As shown in FIGS. 1, 2, and 4, the support member 80 has an upper surface 80 a of the RFID medium 20 provided on one surface 50 a of the first member 50 accommodated in the accommodation member 70. It is provided at a position arranged in the vicinity of one end 20A (one end 22A of the first antenna 22). That is, the upper surface 80a of the support member 80 is a plane disposed in the vicinity of one end 20A of the RFID medium 20 (one end 22A of the first antenna 22).
Moreover, in the support member 80, the surface (back surface) 80b opposite to the surface in contact with the other surface 70b of the housing member 70 is a surface that is attached to the metal pipe 110 that constitutes the pipe assembly type storage rack 100 described later. It is.

  As shown in FIGS. 1 and 4, the second antenna 30 is provided on the upper surface 80 a of the support member 80. That is, the second antenna 30 is present on a plane disposed in the vicinity of one end 20A of the RFID medium 20 (one end 22A of the first antenna 22). Thereby, the second antenna 30 is in the reading direction of the RFID medium 20 (the direction perpendicular to the longitudinal direction of the housing member 70 and the longitudinal direction of the support member 80) and the direction in which the RFID medium 20 (first antenna 22) extends. It extends perpendicularly to it. Further, the one end 30A of the second antenna 30 is disposed in the vicinity of the one end 20A of the RFID medium 20 (one end 22A of the first antenna 22).

  As shown in FIG. 1B, the second antenna 30 includes, on the upper surface 80a of the support member 80, a linear portion 30B extending in the longitudinal direction of the housing member 70 and the longitudinal direction of the support member 80, and the linear portion 30B. It is preferable to have a bent portion 30 </ b> C that is connected and extends in a direction gradually separating from the housing member 70. That is, the bent portion 30C of the second antenna 30 forms the other end of the second antenna 30 that is not close to the one end 20A of the RFID medium 20 (one end 22A of the first antenna 22), and the other end ( A bent portion 30 </ b> C) extends in a direction away from the RFID medium 20 provided on one surface 50 a of the first member 50. The bent portion 30C has an arc shape with the straight portion 30B as the base end.

  In the present embodiment, the case where the bent portion 30C of the second antenna 30 has an arc shape is illustrated, but the present invention is not limited to this. In the present invention, the bent portion of the second antenna, that is, the other end portion of the second antenna that is not close to the one end portion of the first antenna extends in a direction away from the RFID medium. Any shape may be used.

  The conductor 40 extends along the longitudinal direction of the housing member 70 and the longitudinal direction of the second antenna 30 on one surface (front surface) 70 a of the housing member 70. When the Kanban board with RFID 10 is viewed from the front (one surface 70a of the housing member 70), as shown in FIG. 1A, a part of the conductor 40 (in FIG. 1A, the conductor 40 And the other end 20B in the longitudinal direction of the RFID medium 20 (the other end 22B of the first antenna 22) overlap each other.

  As shown in FIG. 5, the RFID medium 20 is roughly composed of a base material 23, an IC chip 21 provided on one surface 23 a of the base material 23, and a first antenna 22 electrically connected to the IC chip 21. It is configured.

  As the base material 23, an insulating base material is used, and examples include a base material made of a resin such as polyethylene terephthalate (PET) or polyimide; a base material made of a glass epoxy resin; a base material made of paper.

The IC chip 21 operates by electric power supplied from the outside via the first antenna 22 and the second antenna 30 in a non-contact manner, and performs wireless communication with the outside via the first antenna 22 and the second antenna 30. This is a semiconductor integrated circuit that performs data writing and reading in a non-contact state. The IC chip 21 is not particularly limited, and any IC chip 21 can be used as long as it can write and read data in a non-contact state via the first antenna 22 and the second antenna 30.
In the Kanban board with RFID 10 of the present embodiment, information (part name, product number, storage location, etc.) related to components stored in a storage box 200 disposed in a pipe assembly type storage shelf 100 described later is written.

The first antenna 22 is an antenna that is electrically connected to the IC chip 21.
The first antenna 22 shown in FIG. 5 is a dipole antenna provided with a pair of meander-like radiating elements 24 and 24 that face each other and have feeding points (portions connected to the IC chip 21) on the opposite sides. .

  In the present embodiment, the case where the first antenna 22 is a dipole antenna including a pair of radiating elements 24, 24 is illustrated, but the present embodiment is not limited to this. In the present embodiment, the first antenna 22 may be a planar dipole antenna, a frame-shaped dipole antenna, a loop antenna, or the like.

  Although the length of the 1st antenna 22 is not specifically limited, The length corresponded to 1/2 wavelength of frequency 920MHz, 1/3 wavelength, and 1/4 wavelength is preferable.

  Examples of the material constituting the first antenna 22 include known polymer-type conductive ink, conductive ink such as silver ink composition, metal foil, metal thin film formed by electroplating or electrostatic plating, metal vapor deposition, and the like. And metal thin films and metal plates formed by the various thin film forming methods.

  The second antenna 30 is a booster antenna that is electromagnetically coupled to the first antenna 22 in a non-contact manner. The second antenna 30 is provided in order to increase the communication distance (allow long-distance communication) as compared with the case where wireless communication is performed using only the first antenna 22. The second antenna 30 has a planar shape, in other words, a strip shape or a strip shape having a predetermined width.

The second antenna 30 has a length corresponding to a half wavelength of the frequency (300 MHz to 30 GHz) of the UHF band or microwave band used in RFID.
The width of the second antenna 30 (width w shown in FIG. 1) is preferably 2 mm to 10 mm.

  As the material constituting the second antenna 30, the same material as that constituting the first antenna 22 is used.

The conductor 40 is a band-shaped member made of a conductive material.
As a material constituting the conductor 40, the same material as that constituting the first antenna 22 is used.

  The first member 50 is, for example, a member (for component management) for displaying information related to a component accommodated in a storage box 200 disposed in a pipe assembly storage rack 100 described later, to which the Kanban board with RFID 10 is applied. Card). Information related to the component is displayed (described) on one surface 50 a of the first member 50.

The first member 60 is a film-like or sheet-like member having a rectangular shape in plan view.
Examples of the first member 60 include base materials made of various resins and base materials made of paper.

  As the transparent base material 71 that forms the housing member 70, the information displayed on the one surface 50 a of the first member 50 can be read when the first member 50 is housed in the housing member 70. A transparent substrate is used.

  Examples of the material constituting the transparent substrate 71 include resins such as polyethylene terephthalate (PET).

As the support member 80, an insulating member is used.
Examples of the material constituting the support member 80 include resins such as polystyrene (styrene foam).

Next, the usage method of the kanban 10 with RFID of this embodiment is demonstrated using FIGS. 1-6, and the effect | action of the kanban 10 with RFID of this embodiment is demonstrated.
As shown in FIG. 6, the Kanban board with RFID 10 of this embodiment is used by being attached to a pipe assembly type storage shelf 100.

The pipe assembling-type storage rack 100 is assembled by joining metal pipes 110 with joints. The pipe assembling-type storage shelf 100 has a form in which a plurality of cubic frame bodies 120 formed of twelve metal pipes 110 are stacked.
As shown in FIG. 6, a resin storage box 200 is disposed in each frame 120. The storage box 200 is locked to the metal pipe 110 forming a rectangular frame on the lower side in the vertical direction among the metal pipes 110 constituting the frame body 120.

  In addition, among the metal pipes 110 that form a rectangular frame on the lower side in the vertical direction of the frame body 120, the Kanban board with RFID 10 is attached to the metal pipe 110 facing the worker. More specifically, the back surface 80b of the support member 80 of the Kanban board with RFID 10 is attached to the metal pipe 110 via an adhesive or the like, thereby fixing the Kanban board with RFID 10 to the metal pipe 110. Accordingly, the one surface 70a of the housing member 70, the one surface 40a of the first member 50 housed in the housing member 70, and the one surface 23a of the base member 23 constituting the RFID medium 20 are connected to the pipe-assembled storage shelf. 100 along the height direction. Further, the upper surface 80 a of the support member 80 is arranged so as to be orthogonal to the height direction of the pipe assembly type storage rack 100. Accordingly, the second antenna 30 provided on the upper surface 80 a of the support member 80 is disposed so as to be orthogonal to the height direction of the pipe assembly type storage rack 100.

  Information on components housed in the housing box 200 is written in the IC chip 21 provided in the Kanban board with RFID 10. Further, on one surface 50 a of the first member 50 of the Kanban board with RFID 10, information related to components housed in the housing box 200 is displayed.

  In the management of parts using the Kanban board with RFID 10 according to the present embodiment, an operator can use the storage box from the opening 130 on the side where the Kanban board with RFID 10 is attached in the pipe assembly type storage rack 100 in FIG. The parts are put into and out of 200. Here, the worker wears an information reading / writing device on the back of the hand. Therefore, every time an operator puts parts in and out of the storage box 200, the information reading / writing device reads or writes information about the parts on the IC chip 21 provided in the Kanban board with RFID 10. Done.

  The Kanban board with RFID 10 of this embodiment has directivity as described later. Therefore, in the Kanban board with RFID 10 of this embodiment, the operator moves his / her hand along the direction indicated by the arrow c in FIG. 6 on the Kanban board with RFID 10 in order to put components in and out of the storage box 200. Only when the information is read, information on the component is read from or written to the IC chip 21.

The Kanban board with RFID 10 of the present embodiment includes an IC chip 21 and an RFID medium 20 having a first antenna 22 connected to the IC chip 21, and a reading direction of the RFID medium 20 and a direction in which the first antenna 22 extends. Near the other end 22B of the first antenna 22 and the planar second antenna 30 having one end 30A disposed in the vicinity of the one end 22A of the first antenna 22. And a conductor 40 extending along a direction in which the second antenna 30 extends. Therefore, as shown in FIG. 3, the Kanban board with RFID 10 includes one surface 60a of the housing member 60, one surface 40a of the first member 40 accommodated in the housing member 60, and the RFID medium, as indicated by alternate long and short dashed lines a and b. 20 has directivity along one surface 23a of the base material 23 constituting the substrate 20 and on both ends in the longitudinal direction of the RFID medium 20. That is, the Kanban board with RFID 10 has directivity along the height direction with respect to the pipe assembly type storage shelf 100 to which it is attached. Therefore, as described above, when the Kanban 10 with RFID is attached to the pipe assembly type storage shelf 100 and the operator puts components in and out of the storage box 200, the information reading / writing mounted on the back of the operator's hand is performed. The apparatus reads or writes information related to the components with respect to the IC chip 21 provided in the Kanban board 10 with RFID.
Further, as shown in FIG. 3, in the Kanban board with RFID 10, the radiation intensity of the second antenna 30 in the vertical direction (the height direction of the pipe assembly type storage rack 100) is lower than the upper surface 80 a of the support member 80. The radiation intensity of the second antenna 30 is lower than the upper surface 80a of 80 in the vertical direction (the height direction of the pipe-assembled storage rack 100). As a result, the reading or writing operation reads or writes the information about the parts on the IC chip provided in the Kanban board with RFID corresponding to the storage box disposed below the target storage box 200. Can be prevented. In FIG. 3, regions indicated by alternate long and short dash lines a and b are regions indicating the directivity of the second antenna 30 and the radiation intensity of the second antenna 30.

  Further, in the Kanban board with RFID 10 of this embodiment, as shown in FIG. 1B, the second antenna 30 is arranged in the longitudinal direction of the housing member 70 and the longitudinal direction of the support member 80 on the upper surface 80 a of the support member 80. The linear portion 30 </ b> B extends and the bent portion 30 </ b> C extends in a direction gradually separating from the housing member 80. As a result, the radiation intensity of the second antenna 30 becomes weaker as the distance from the one end portion 30A arranged close to the one end portion 20A of the RFID medium 20 (one end portion 22A of the first antenna 22) is increased. Further, the radiation intensity of the second antenna 30 is the weakest at the bent portion 30 </ b> C of the second antenna 30. As a result, it is possible to prevent a reading error from occurring on the IC chip 21 from the front side of the kanban 10 with RFID (one surface 50a of the first member 50).

  As described above, according to the present embodiment, in the component management using the pipe assembly type storage shelf 100 in which a plurality of storage boxes 200 can be stacked, the read or write operation with respect to the RFID medium 20 is performed. It is possible to provide the Kanban board with RFID 10 that prevents the RFID medium 20 corresponding to the storage box 200 disposed below the target storage box 200 from being erroneously read or written.

DESCRIPTION OF SYMBOLS 10 ... Kanban board with RFID, 20 ... RFID medium, 21 ... IC chip, 22 ... 1st antenna, 23 ... Base material, 24 ... Radiation element, 30 ... 2nd Antenna, 40 ... conductor, 50 ... first member, 60 ... second member, 70 ... accommodating member, 71 ... transparent substrate, 72 ... welded part, ... -Support member.

Claims (3)

  An RFID medium having an IC chip and a first antenna connected to the IC chip, and extending orthogonally to the reading direction of the RFID medium and the direction in which the first antenna extends, A planar second antenna having one end portion arranged in proximity to the first antenna and an end portion on the opposite side of the first antenna from the side close to the second antenna, and the second antenna extends. A kanban with RFID, comprising: a conductor extending along a direction.   2. The Kanban board with RFID according to claim 1, wherein the RFID medium is provided on a first member, and the second antenna is provided on a second member detachably attached to the first member.   3. The Kanban board with RFID according to claim 1, wherein the other end of the second antenna that is not close to the first antenna extends in a direction away from the RFID medium. 4.

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