JP2018205926A - Sign with rfid - Google Patents

Abstract

To provide a sign with an RFID capable of correctly reading information related to components when the components are put into and taken out of a storage box, 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; and 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 one end part of the first antenna.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.

  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, the parts are taken into and out of the storage box. It is an object of the present invention to provide a Kanban board with RFID that can accurately read information on components.

  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. And a planar second antenna having one end portion disposed in the vicinity of the one end portion of the first antenna.

  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 one end portion of the first antenna extends in a direction away from the RFID medium.

  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.

  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, information regarding the parts is accurately read when the parts are taken into and out of the storage box. An RFID-equipped kanban can be provided.

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. It is a top view which shows the kanban with RFID by embodiment of this invention, and is a figure which shows the radiation intensity of a 2nd antenna. It is a top view which shows the modification of the Kanban with RFID, and is a figure which shows the radiation intensity of a 2nd antenna.

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 One antenna 22 extends perpendicular to the direction in which the first antenna 22 extends, and corresponds to one end 22A of the first antenna 22 (in FIG. 1, FIG. 2, and FIG. 4 corresponding to one end 20A in the longitudinal direction of the RFID medium 20). And a planar second antenna 30 having one end portion 30A disposed in the vicinity of the first antenna 30A.

  In the Kanban board with RFID 10, as shown in FIG. 1, the RFID medium 20 is provided on one surface (front surface) 40a of the first member 40 in the form of a film or a sheet, for example. Note that the RFID medium 20 may be provided on the other surface (back surface) 40 b of the first member 40.

Moreover, in the Kanban board 10 with RFID, as shown in FIGS. 1-4, the 2nd antenna 30 is provided on the 1st member 40 and the 2nd member 50 which can be attached or detached.
As shown in FIGS. 1 and 4, the second member 50 is provided on a film-like or sheet-like accommodation member 60 that accommodates the first member 40, and one surface (back surface) 60 a of the accommodation member 60. And a support member 70 that supports the member 60.

  In the housing member 60, a film-like or sheet-like transparent substrate 61 is folded in two, and one edge portion along the longitudinal direction of the laminated transparent substrate 61 is welded to form a welded portion 62. By this, it is a bag-shaped (pocket-shaped) member in which two adjacent sides (two sides composed of the folding line 61A and the welded portion 62) are sealed. In FIGS. 1 and 4, the left end of the housing member 60 is a portion where the transparent substrate 61 is folded (folded line 61 </ b> A), and is a portion where the transparent substrate 61 is continuous. Further, the welded portion 62 extends along the longitudinal direction of the housing member 60. Furthermore, the housing member 60 is not sealed at two sides facing the sealed two sides (a side (short side) 61B facing the folding line 61A and a side (long side) 61C facing the welding portion 62). Only the transparent substrate 61 is superposed. Thus, the accommodation member 60 is accommodated by sandwiching the first member 40 in the accommodation member 60, that is, between the laminated transparent base materials 61, by forming a bag shape in which two sides are sealed. can do. Further, the first member 40 accommodated in the accommodating member 60 can be easily taken out. In other words, the first member 40 is detachable from the second member 50.

As shown in FIGS. 1 to 4, the support member 70 is a member having a quadrangular prism shape, for example, and extends along the longitudinal direction of the housing member 60. As shown in FIGS. 1, 2, and 4, the support member 70 has an upper surface 70 a of the RFID medium 20 provided on one surface 40 a of the first member 40 accommodated in the accommodation member 60. It is provided at a position arranged in the vicinity of one end 20A (one end 22A of the first antenna 22). In other words, the upper surface 70a of the support member 70 is a plane disposed in the vicinity of the one end 20A of the RFID medium 20 (the one end 22A of the first antenna 22).
Moreover, in the support member 70, the surface (back surface) 70b facing the surface in contact with the one surface 60a of the housing member 60 is a surface that is attached to the metal pipe 110 that constitutes the pipe assembly type storage shelf 100 described later. It is.
The housing member 60 and the support member 70 are joined via an adhesive material or an adhesive material.

  As shown in FIGS. 1 and 4, the second antenna 30 is provided on the upper surface 70 a of the support member 70. 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 60 and the longitudinal direction of the support member 70) 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 70a of the support member 70, a linear portion 30B extending in the longitudinal direction of the housing member 60 and the longitudinal direction of the support member 70, 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 60. 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 ( The bent portion 30 </ b> C) extends in a direction away from the RFID medium 20 provided on the one surface 40 a of the first member 40. 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.

  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 first member 40 is, for example, a member (for component management) for displaying information related to components 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 40 a of the first member 40.

The first member 40 is a film-like or sheet-like member having a rectangular shape in plan view.
Examples of the first member 40 include base materials made of various resins, base materials made of paper, and the like.

  As the transparent base material 61 that forms the housing member 60, the information displayed on the one surface 40 a of the first member 40 can be read when the first member 40 is housed in the housing member 60. A transparent substrate is used.

  Examples of the material constituting the transparent substrate 61 include resins such as polyethylene terephthalate (PET).

As the support member 70, an insulating member is used.
Examples of the material constituting the support member 70 include resins such as polystyrene (styrene foam).

Next, the usage method of the kanban 10 with RFID of this embodiment is demonstrated using FIGS. 1-8, 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 70b of the support member 70 of the Kanban board with RFID 10 is attached to the metal pipe 110 with an adhesive or the like, thereby fixing the Kanban board with RFID 10 to the metal pipe 110. Accordingly, the one surface 60a of the housing member 60, the one surface 40a of the first member 40 housed in the housing member 60, and the one surface 23a of the base member 23 constituting the RFID medium 20 are connected to the pipe assembly-type housing shelf. 100 along the height direction. Further, the upper surface 70 a of the support member 70 is disposed 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 70 a of the support member 70 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. In addition, on one surface 40a of the first member 40 of the kanban 10 with RFID, 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. And a planar second antenna 30 having one end portion 30 </ b> A disposed in proximity to one end portion 22 </ b> A of the first antenna 22. 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. 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. 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.

  In addition, as shown in FIG. 1B and FIG. 7, in the kanban 10 with RFID of this embodiment, the second antenna 30 is disposed on the upper surface 70 a of the support member 70 in the longitudinal direction of the housing member 60 and the support member 70. It has a straight portion 30 </ b> B extending in the longitudinal direction and a bent portion 30 </ b> C extending in a direction gradually separating from the housing member 60. Accordingly, as shown by a broken line d in FIG. 7, as the distance from the one end 30 </ b> A disposed in the vicinity of the one end 20 </ b> A of the RFID medium 20 (one end 22 </ b> A of the first antenna 22) increases, Radiation intensity becomes weak. 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 40a of the first member 40). In addition, the area | region shown with the broken line d in FIG. 7 is an area | region which shows the radiation intensity of the 2nd antenna 30 which enables reading or writing with respect to IC chip 21 from the front side of the Kanban 10 with RFID.

  On the other hand, as shown in FIG. 8, if the second antenna 30 is composed of only a straight portion extending in the longitudinal direction of the support member 70 on the upper surface 70 a of the support member 70, As indicated by a broken line e, the radiation intensity of the second antenna 30 increases as the distance from the one end portion 30A disposed close to the one end portion 20A of the RFID medium 20 (one end portion 22A of the first antenna 22) increases. As a result, there is a high possibility of erroneous reading with respect to the IC chip 21 from the front side of the kanban 10 with RFID (one surface 40a of the first member 40). In addition, the area | region shown with the broken line e in FIG. 8 is an area | region which shows the radiation intensity of the 2nd antenna 30 which enables reading or writing with respect to IC chip 21 from the front side of the Kanban 10 with RFID.

  As described above, according to the present embodiment, in the parts management using the pipe assembly type storage shelf 100 in which a plurality of storage boxes 200 can be stacked and placed, the parts are put into and out of the storage box 200. In this case, it is possible to provide the Kanban board with RFID 10 that can accurately read information about the component.

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 ... 1st member, 50 ... 2nd member, 60 ... Housing member, 61 ... Transparent base material, 62 ... Welding part, 70 ... Supporting member.

Claims (3)

  An RFID medium having an IC chip and a first antenna connected to the IC chip, and extending perpendicularly to the reading direction of the RFID medium and the direction in which the first antenna extends, A Kanban board with RFID, comprising: a planar second antenna having one end portion disposed close to the one end portion.   2. The Kanban board with RFID according to claim 1, wherein the other end portion of the second antenna that is not close to one end portion of the first antenna extends in a direction away from the RFID medium.   3. 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 that can be attached to and detached from the first member.

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