JP2011258093A - Reader/writer apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reader/writer apparatus capable of appropriately reading information of an IC tag attached to a large object.SOLUTION: The reader/writer apparatus includes: a lower mounting board 3 provided at the bottom of an apparatus main body 2; a lower antenna 12 stored inside the lower mounting board 3; a mounting plate 5 which is provided on the lower mounting board 3 for mounting the object attached with the IC tag; a drive motor 8 moving the mounting plate 5 at least in one direction via a drive mechanism; a transmission/reception unit 15 for transmitting/receiving information to/from the IC tag; and a control unit 14 which rotates the drive motor 8 in the forward/inverse direction to move the mounting board 5 when the object attached with the IC tag is mounted on the mounting plate 5 and, when receiving the information of the IC tag from the transmission/reception unit 15, controls to return the mounting plate 5 to an initial position where it is stored inside the lower mounting board 3.

Description

  The present invention relates to a reader / writer device, and more particularly to a reader / writer device capable of appropriately reading information of an IC tag attached to a large object.

  Conventionally, RFID technology for recognizing an object using an IC tag has been widely used. For example, in a factory or a distribution base, an IC tag is attached to an object, and information on the IC tag is read by a reader / writer device. By reading, the object is identified and managed.

  Such a reader / writer device includes an antenna for transmitting / receiving information to / from an IC tag. When the reader / writer device transmits / receives information to / from an IC tag attached to an object, a large number of objects are detected. There is a need to quickly send and receive information to and from objects.

  Therefore, conventionally, for example, a tag access control system that includes a plurality of reader / writer devices each having a plurality of antennas and that controls information transmission / reception with an IC tag that sequentially moves through a communication range of the plurality of antennas, A recording unit that stores the reader / writer device, a command receiving unit that receives a command, a splitting unit that generates a plurality of split commands from the command, and an antenna communication range in any one of the reader / writers A detection unit that detects an IC tag, a job control unit that sequentially allocates a plurality of divided commands to a plurality of reader / writers according to movement information and reader / writer device information, and a return unit that returns a processing result for the command, There is disclosed a technology that includes the above (see, for example, Patent Document 1).

JP 2007-156570 A

  However, since the conventional technology requires a plurality of antennas and a plurality of reader / writer devices, there is a problem that the control becomes complicated and the equipment cost increases.

  On the other hand, when reading the information of the IC tag of the object with one reader / writer device, if the object is large, it is necessary to make the antenna large, but the leakage magnetic field from the antenna does not affect the outside. Therefore, the size of the antenna is limited with respect to the size of the reader / writer device. Therefore, when reading the information of the IC tag attached to the object, there is a problem that the reader / writer device needs to be enlarged in order to deal with a large object. In addition, for a large object, it is possible to read the information of the IC tag with a handy reader. However, since it is a manual operation, there is a problem that the reading accuracy varies depending on the operator.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a reader / writer device capable of appropriately reading information of an IC tag attached to a large object.

In order to achieve the above object, the reader / writer device according to the invention of claim 1 includes a lower mounting table provided at a lower portion of the device main body,
An antenna housed inside the lower mounting table;
A mounting plate for mounting an object provided on the lower mounting table and equipped with an IC tag;
A drive motor that moves the mounting plate in at least one direction via a drive mechanism;
A transmission / reception unit for transmitting / receiving information to / from the IC tag;
When an object having the IC tag mounted thereon is placed on the mounting table, the driving motor is rotated in forward and reverse directions to move the mounting table, and the information on the IC tag is received by the transmitting / receiving unit. Then, the control part which controls to return the said mounting plate to the initial position accommodated in the inside of the said lower mounting base is provided, It is characterized by the above-mentioned.

  The invention according to claim 2 further comprises, in claim 1, an upper detection unit that is disposed above the lower mounting table so as to have a predetermined distance from the lower mounting table, and in which an antenna is accommodated. It is characterized by.

  The invention according to claim 3 is characterized in that, in claim 1 or claim 2, the mounting plate is movable in a horizontal plane.

  According to the first aspect of the present invention, when the object having the IC tag attached to the mounting table is mounted by the control unit, the driving motor is rotated in the forward and reverse directions to move the mounting table, When the information of the IC tag is received by the transmission / reception unit, the mounting plate is controlled to return to the initial position accommodated in the lower mounting table, so that the IC tag mounted on the object is surely applied to the electric field. As a result, the information of the IC tag attached to the object larger than the electric field formed by the antenna can be reliably received. In addition, since there is no need to provide a plurality of reader / writer devices, the equipment cost can be reduced, and the difference in reading accuracy by the operator is not multiplied as in the case of reading an IC tag with a handy reader. Thus, the IC tag information can be read.

  According to the second aspect of the present invention, since the upper detector is disposed above the lower mounting table so as to have a predetermined distance from the lower mounting table and the antenna is accommodated therein, the lower mounting table is provided. Thus, the information of the IC tag can be received by appropriately generating an electric field by the antenna and the antenna of the upper detection unit.

  According to the invention of claim 3, since the mounting plate is movable in a horizontal plane, the object can be moved over a wide range, and the information of the IC tag attached to the larger object is appropriately displayed. Can be received.

1 is a schematic perspective view showing an embodiment of a reader / writer device according to the present invention. 1 is a schematic front view showing an embodiment of a reader / writer device according to the present invention. 1 is a schematic side view showing an embodiment of a reader / writer device according to the present invention. It is a schematic block diagram which shows the control structure in embodiment of the reader / writer apparatus which concerns on this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic configuration diagram showing an embodiment of a reader / writer device according to the present invention. In this embodiment, a reader / writer device 1 includes a device main body 2 formed in a side shape U-shape. . A lower mounting table 3 is disposed at the lower part of the apparatus main body 2, and an upper detection unit 4 disposed at a predetermined distance from the lower mounting table 3 is provided above the lower mounting table 3. ing.

  Further, the lower mounting table 3 is provided with a flat mounting plate 5, and the mounting plate 5 is moved to one side of the lower mounting table 3 on one side of the lower mounting table 3. The movement opening 6 is formed. The mounting plate 5 is supported by a guide member (not shown), and the mounting plate 5 can be moved back and forth in the horizontal direction along the guide member through the movement opening 6. In addition, a mounting opening 7 for exposing the mounting plate 5 is formed on the upper surface of the lower mounting table 3.

  A drive motor 8 is disposed on one side of the lower mounting table 3, and an output gear 10 is attached to the output shaft 9 of the drive motor 8. A plurality of transmission gears 11 are meshed with the output gear 10. The mounting gear 5 is connected to the transmission gear 11 via a mechanism that converts a rotational motion, such as a rack and a pinion, into a linear motion, for example, and the drive motor 8 is rotationally driven to output the gear 10 and the transmission gear. The mounting plate 5 can be moved forward and backward along the guide member by driving the 11 to rotate forward and backward.

  A lower antenna 12 is accommodated in the lower base, and an upper antenna 13 is accommodated in the upper detection unit 4. The lower antenna 12 and the upper antenna 13 are configured to be installed in a small area with respect to the internal space of the lower mounting table 3 and the upper detection unit 4. This is to prevent the electric field generated from the lower antenna 12 and the upper antenna 13 from leaking outside.

  Next, the control configuration of the reader / writer device 1 according to the present invention will be described.

  FIG. 2 shows a control configuration of the reader / writer device 1 according to the present invention, and the reader / writer device 1 includes a control unit 14. The control unit 14 is connected to a transmission / reception unit 15. The transmission / reception unit 15 receives predetermined information via the lower antenna 12 and the upper antenna 13 or transmits information from the IC tag 14. The predetermined information to be transmitted is transmitted to the IC tag. Further, the drive motor 8 is connected to the control unit 14, and the drive motor 8 is rotationally driven in the forward and reverse directions when an object having an IC tag mounted thereon is placed on the placement plate 5. The mounting plate 5 is configured to move forward and backward. Driving of the drive motor 8 by the control unit 14 is started after the object is placed on the placement plate 5 and is continued until the information on the IC tag is received by the transmission / reception unit 15. The mounting plate 5 is controlled to return to the initial position accommodated in the lower mounting table 3.

  Next, the operation of this embodiment will be described.

  In the present embodiment, when an object on which an IC tag is mounted is placed on the placement plate 5, the drive motor 8 is driven by the control unit 14, and the placement plate is connected via the output gear 10 and the transmission gear 11. Move 5 back and forth. And if the information of the IC tag with which the target object was mounted | worn was received by the transmission / reception part 15, the mounting part 5 will be returned by the control part 14 to an initial position.

  In the present embodiment, since the lower antenna 12 and the upper antenna 13 are installed in a small area with respect to the internal space of the lower mounting table 3 and the upper detection unit 4, they are formed by the lower antenna 12 and the upper antenna 13. The electric field generated is generated in a small area on the surface where the lower mounting table 3 and the upper detection unit 4 face each other. By moving the mounting plate 5 forward and backward, the IC tag mounted on the object can be reliably detected. It is possible to be positioned inside the electric field.

  As described above, in the present embodiment, the object mounted with the IC tag is placed on the placing plate 5 of the lower placing table 3, and the placing plate 5 is moved forward and backward to thereby move the lower antenna 12 and The IC tag attached to the object can be surely positioned inside the electric field formed by the upper antenna 13, and as a result, the IC tag attached to the object larger than the electric field formed by the antenna Information can be received reliably. In addition, since it is not necessary to provide a plurality of reader / writer devices 1, the equipment cost can be reduced, and the difference in reading accuracy by the operator is not multiplied as in the case of reading the IC tag with a handy reader. IC tag information can be read stably.

  In the above-described embodiment, the mounting plate 5 is moved back and forth in one direction with respect to the lower mounting table 3, but may be moved back and forth in both the left and right directions of the lower mounting table 3. Furthermore, the mounting plate 5 may be moved back and forth as well as left and right, and may be moved in a horizontal plane.

  The present invention is not limited to the above-described embodiment, and various modifications can be made based on the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Reader / writer apparatus 2 Apparatus main body 3 Lower mounting base 4 Upper detection part 5 Mounting plate 6 Movement opening 7 Mounting opening 8 Drive motor 9 Output shaft 10 Output gear 11 Transmission gear 12 Lower antenna 13 Upper antenna 14 Control part 15 Transceiver

Claims (3)

A lower mounting table provided at the lower part of the apparatus body;
An antenna housed inside the lower mounting table;
A mounting plate for mounting an object provided on the lower mounting table and equipped with an IC tag;
A drive motor that moves the mounting plate in at least one direction via a drive mechanism;
A transmission / reception unit for transmitting / receiving information to / from the IC tag;
When an object having the IC tag mounted thereon is placed on the mounting table, the driving motor is rotated in forward and reverse directions to move the mounting table, and the information on the IC tag is received by the transmitting / receiving unit. Then, a control unit for controlling the mounting plate to return to the initial position accommodated in the lower mounting table,
A reader / writer device comprising:   2. The reader / writer device according to claim 1, further comprising an upper detection unit disposed above the lower mounting table so as to have a predetermined distance from the lower mounting table and having an antenna accommodated therein. .   The reader / writer device according to claim 1, wherein the mounting plate is movable in a horizontal plane.

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