JP2011008708A - Electronic tag reading system and electronic tag reading method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To read electronic tags in batch which are attached to documents in a document storage box and acquire the content and quantity of the documents without labor, in a short time period.SOLUTION: An electronic tag reading system includes a turntable 10 on which a storage box 80 storing a plurality of electronic tags that store information is placed to turn the storage box 80; antennas 21-23 for wirelessly communicating with the electronic tags; a shielding box 30 in which the turntable 10 and the antennas 21-23 are installed; a reader 40 for reading the information stored in the electronic tags via the antennas 21-23; a tag list storage unit 50 for storing a tag list 52 of the electronic tags stored in the storage box 80; and a controlled calculator 60 for comparing the tag list 52 stored in the tag list storage unit 50 and a read result 42 of the reader 40, and making the reader 40 read the information stored in the electronic tags, while making the turntable 10 rotate, until the reader 40 reads all the information in the electronic tags written in the tag list 52.

Description

  The present invention relates to an electronic tag reading system and an electronic tag reading method using, for example, a UHF (Ultra High Frequency) band RFID (Radio Frequency IDentification) tag.

  When storing and managing important documents stored in a document storage box, conventionally, barcodes and HF (High Frequency) tags are pasted on documents, and each document is read to determine the contents and quantity of the stored documents. There was a need.

JP 2005-004532 A JP 2008-112227 A JP 2009-057153 A JP 2008-107888 A JP 2007-087378 A JP 2005-193030 A

  Conventionally, it takes a lot of labor and time to take out the documents stored in the storage box from the storage box, read the barcode or HF tag attached to the document with a reader, and check the contents and quantity of the document. There are challenges.

The electronic tag reading system of the present invention is
A turntable that puts a storage box containing a plurality of electronic tags storing information and rotates the storage box;
An antenna that wirelessly communicates with an electronic tag using radio waves of a predetermined frequency;
A radio wave anechoic box that blocks radio waves of the predetermined frequency and has a turntable and an antenna installed therein,
A reader for reading information stored in an electronic tag via an antenna;
And a control computer that causes the reader to read information stored in the electronic tag while rotating the turntable.

  According to the present invention, it is possible to collectively read the electronic tags attached to a plurality of documents in the document storage box, and it is possible to grasp the contents and quantity of the documents in a short time without labor.

1 is an overall configuration diagram of an electronic tag reading system 100 according to Embodiment 1. FIG. 1 is a configuration diagram of an anechoic box 30 of an electronic tag reading system 100 according to Embodiment 1. FIG. 2 is a configuration diagram of a storage box 80 and a document binding (large) 83 of the electronic tag reading system 100 according to Embodiment 1. FIG. 2 is a configuration diagram of a storage box 80 and a document binding (small) 84 of the electronic tag reading system 100 according to Embodiment 1. FIG. 6 is an operation flowchart of the control computer 60 of the electronic tag reading system 100 according to Embodiment 1. FIG. 6 is a configuration diagram of an anechoic box 30 of an electronic tag reading system 100 according to Embodiment 2. FIG. It is a figure which shows an example of the hardware resource of the control computer 60 of the electronic tag reading system.

Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram of an electronic tag reading system 100. FIG. 2 is a configuration diagram of the anechoic box 30 of the electronic tag reading system 100. The overall configuration of the electronic tag reading system 100 will be described with reference to FIGS. 1 and 2.
The electronic tag reading system 100 includes an anechoic box 30, a reader 40, a tag list storage unit 50, a control computer 60, and a monitor 70.

As shown in FIG. 2, the anechoic box 30 has a casing 39 made of a hexahedron. The housing 39 cuts off a frequency (about 860 to 960 MHz) in a UHF (Ultra High Frequency) band. The door 32 of the anechoic box 30 opens and closes forward.
A plurality of antennas such as an antenna 21, an antenna 22, an antenna 23, an antenna 24, an antenna 25, and an antenna 26 are installed on the inner wall surface of the housing 39 of the anechoic box 30.
On the bottom surface of the housing 39 of the anechoic box 30, the turntable 10 (or the annular turntable 12) is placed.
The turntable 10 (or the annular turntable 12) is located at the bottom center of the anechoic box 30, and is rotated in one direction or both directions by a motor (not shown). The turntable 10 (or the annular turntable 12) has a rotation axis in the vertical direction at the center of the disk. The turntable 10 (or the annular turntable 12) rotates, for example, at a speed of 20 rotations per minute.
A storage box 80 containing a plurality of electronic tags storing information is mounted on the turntable 10 (or the annular turntable 12). By opening the door 32, the storage box 80 can be mounted on the turntable 10 (or the annular turntable 12), and the storage box 80 is carried in and out of the anechoic box 30. The opening / closing mechanism of the door 32 is a loading / unloading mechanism for loading / unloading the storage box 80. A plurality of storage boxes 80 may be mounted on the turntable 10 (or the annular turntable 12).
The anechoic box 30 includes a rotation position sensor 11 that detects the rotation position (rotation angle) of the turntable 10 (or the annular turntable 12). The rotational position sensor 11 can be constituted by a limit switch, for example.

  The shape of the turntable 10 shown in FIG. 1 is a disk, but the turntable may be a donut-shaped annular turntable 12 as shown in FIG. In the case of the annular turntable 12, the antenna 24 can be arranged inside the center space of the annular turntable 12 or below the center space. Since the antenna 24 is disposed inside or below the central space of the annular turntable 12 and is fixed to the bottom of the housing 39, the antenna 24 does not rotate even when the annular turntable 12 rotates. be able to.

  The number of antennas only needs to be plural, and it is desirable that the plurality of antennas be arranged in a three-dimensional axis direction orthogonal to each other in the anechoic box. In the case of FIG. 1, there are antennas on the left, right, and top. That is, there are three antennas: antenna 21 (upper), antenna 22 (left), and antenna 23 (right). In the case of FIG. 2, there are antennas on the six sides of the rectangular parallelepiped. That is, the antenna 21 (upper), the antenna 22 (left), the antenna 23 (right), the antenna 24 (bottom surface), the antenna 25 (rear surface), and the antenna 26 (door surface). As a combination of a plurality of antennas, antenna 21 (upper), antenna 22 (left), antenna 25 (rear), or antenna 21 (upper), antenna 22 (left), antenna 26 (door surface) The four antennas may be the antenna 24 (bottom surface). That is, it is desirable that the antenna is disposed in a three-dimensional axis direction orthogonal within the anechoic box 30. Although it is desirable that the antenna be in the XYZ coordinate axis direction of the three-dimensional orthogonal coordinate system having the rotation axis as the Z axis, the antenna may be in an oblique direction of the three-dimensional orthogonal coordinate system.

  The reader 40 is a reader that reads information stored in an electronic tag such as a UHF band RFID tag via an antenna. The reader 40 may have a writer function. The reader 40 sequentially switches a plurality of antennas in a time division manner. The antenna transmits and receives a radio signal having a frequency of 952 to 954 MHz. The reader 40 reads information stored in a UHF band RFID tag (electronic tag). Since the anechoic box 30 (the casing 39) blocks the UHF band frequency (about 860 to 960 MHz), the radio signal having a frequency of 952 to 954 MHz does not leak to the outside and does not enter from the outside.

  The tag list storage unit 50 is a storage unit that stores a tag list 52 of electronic tags stored in the storage box 80. The tag list storage unit 50 includes a nonvolatile recording medium such as a fixed disk or an optical disk. The tag list storage unit 50 may be directly connected to the control computer 60, may be built in the control computer 60, or may be connected to the control computer 60 via a network.

The control computer 60 is a computer composed of a personal computer or a dedicated machine.
The control computer 60 includes a processing unit 61 and a controller 64.
The processing unit 61 includes a comparison unit 62, a result display unit 63, and a recording unit 69.
The comparison unit 62 compares the tag list 52 already stored in the tag list storage unit 50 with the reading result 42 of the reader 40, and the reader 40 is described in the tag list 52 stored in the tag list storage unit 50. Until the information of all the electronic tags is read, the information stored in the electronic tags is read by the reader 40 while rotating the turntable 10.
The comparison unit 62 outputs a comparison result 72 between the tag list 52 stored in the tag list storage unit 50 and the reading result 42 of the reader 40.
The recording unit 69 inputs the comparison result 72 and stores the comparison result 72 in the tag list storage unit 50.
The result display unit 63 inputs the comparison result 72 and outputs it to the monitor 70.
The controller 64 is connected to the reader 40, the turntable 10 (or its motor), and the rotational position sensor 11, and transmits and receives signals to and controls them.

  The monitor 70 is a liquid crystal display device or a display device, and displays the comparison result output from the result display unit 63 on the display screen.

FIG. 3 is a configuration diagram of the storage box 80 and the document binding (large) 83 of the electronic tag reading system 100.
FIG. 4 is a configuration diagram of the storage box 80 and the document binding (small) 84 of the electronic tag reading system 100.

The storage box 80 may be made of a material that allows radio waves to pass, and may be a cardboard box, a wooden box, a paper box, or the like. A storage box tag 81 is affixed to the storage box 80. That is, an HF band RFID tag is pasted in advance as a storage box tag 81 on the outer surface of the storage box 80 (see FIGS. 3 and 4). The reason why the storage box tag 81 is not a UHF band RFID tag is to prevent the storage box tag 81 from being mistaken for the electronic tag 82 attached to the document spelling when reading in the anechoic box 30.
The basic idea shown in FIGS. 3 and 4 is to arrange the electronic tag 82 so that it can be easily read from the outside of the storage box 80. By placing the electronic tag 82 so that it can be easily read from outside the storage box 80,
(1) The effect of improving the reading performance,
Can be played.
The easy-to-read position of the electronic tag 82 is specifically, the electronic tag 82 is near the inner surface of the storage box 80. An example in which the electronic tag 82 is arranged near the surface of the storage box 80 is as follows. (1) Electronic tag pasting position-In the case of document binding (large) 83, near the center along the long side of the document binding.
-In the case of document spelling (small) 84, near the center along the short side of the document spelling.
(2) Packing of document bindings-In the case of document binding (large) 83, the electronic tag pasting position is arranged near the surface of the storage box 80 and laid down. Depending on the size of the document binding (large) 83, the document binding (large) 83 can be stacked in two rows on the left and right sides, and the electronic tags 82 can be placed near the left and right surfaces of the storage box 80.
In the case of the document binding (small) 84, the electronic tag attaching position is arranged near the surface of the storage box 80, and it is stacked in two stages. Depending on the size of the document binding (small) 84, the document binding (small) 84 is placed in two rows on the left and right sides, and stacked so that the electronic tags 82 are arranged near the left and right surfaces of the storage box 80. You can also.
(3) Points to consider ・ Because the reading rate tends to be lowered by stacking at 1 cm or less due to the characteristics of UHF band RFID, the thickness of the document binding (distance in the overlapping direction of the electronic tag 82) is 1 cm or more.
・ The maximum number of readings per box is 80.
・ If the paper becomes damp due to long-term storage, the reading distance may decrease due to the characteristics of the UHF band RFID.

  FIG. 5 is an operation flowchart of the processing unit 61 of the control computer 60 of the electronic tag reading system 100. The operation of the processing unit 61 of the control computer 60 of the electronic tag reading system 100 will be described with reference to FIG.

  The electronic tag 82 is, for example, a seal type having a label surface (label surface information). In the electronic tag reading system 100, information in which the label surface information of the electronic tag 82 and the electronic tag ID are associated with each other is stored in the tag list storage unit 50 in advance.

  That is, in the electronic tag reading system 100, before the document spelling is stored in the storage box 80, the label surface information of the electronic tag 82 to be attached to the document spelling stored in the storage box 80 and the label surface information correspond to the label surface information. It is assumed that the electronic tag ID is stored in advance in the tag list storage unit 50 as the tag list 52.

Electronic tag reading process.
The worker attaches the electronic tag 82 to the document spelling so that the document spelling (for example, the contents of the document spelling) matches the label surface information, and matches the document spelling with the electronic tag 82 to the tag list 52. The storage box 80 is packed as shown. Then, the worker reads the storage box tag 81 attached in advance to the storage box 80 with a handy reader and uploads the data of the HF band RFID tag (storage box tag 81) to the comparison unit 62 of the control computer 60.
Next, the worker puts the storage box 80 into the anechoic box 30 and closes the door 32. The control computer 60 uses the UHF band RFID reader 40 to collectively read the label electronic tags in the closed storage box 80 and upload the data to the comparison unit 62 of the control computer 60.
In the electronic tag reading process, the processing unit 61 of the control computer 60 performs the following operation using the central processing unit as shown in FIG.

Operation of the processing unit 61 of the control computer 60.
"Tag list input process S1"
The comparison unit 62 inputs the tag list 52 from the tag list storage unit 50.

"Read command output process S2"
The comparison unit 62 outputs a read command 65 to the controller 64 (read command output step S2).
The controller 64 generates a drive signal 67 for the motor and outputs it to the motor of the turntable 10. The turntable 10 starts rotating to rotate the storage box 80 (rotating process).
The controller 64 rotates the turntable 10 and then transfers the read command 65 to the reader 40. While the storage box is rotating, the reader 40 reads information stored in the electronic tag by radio communication with the electronic tag via an antenna with radio waves of a predetermined frequency. The reader 40 sequentially switches a plurality of antennas in a time division manner (read process).

"Tag information reading result input step S3"
The reader 40 outputs the reading result 42 to the controller 64. The controller 64 transfers the read result 42 to the comparison unit 62.

"Comparison process S4 (control process)"
The comparison unit 62 compares the tag list 52 stored in the tag list storage unit 50 with the reading result 42 of the reader 40.

"Continuation process S7 (control process)"
The comparison unit 62 continues the reading process until the reader 40 reads information of all the electronic tags described in the tag list 52 or until time-out occurs.

"Result display process S5 / S8"
The comparison unit 62 outputs the comparison result 72 to the result display unit 63. The result display unit 63 displays the comparison result 72 on the monitor 70.
The monitor 70 displays whether or not the reader 40 has read the information of all the electronic tags described in the tag list 52, and displays the content of mismatch when time-out or mismatch occurs.
Further, the comparison unit 62 outputs the data of the storage box tag 81 and the comparison result 72 to the recording unit 69. The recording unit 69 inputs the data of the storage box tag 81 and the comparison result 72, and stores the data of the storage box tag 81 and the comparison result 72 in the tag list storage unit 50. Further, the recording unit 69 stores the data of the storage box tag 81 in the tag list 52.

"Stop process S6"
The comparison unit 62 outputs a stop command 66 to the controller 64 when the reader 40 has read the information of all the electronic tags described in the tag list 52 or when time-out occurs. The controller 64 receives the position signal 68 from the rotation position sensor 11, generates a drive signal 67 so that the turntable 10 becomes the rotation start position, and stops the turntable 10 at the rotation start position. In addition, the controller 64 outputs a stop command 66 to the reader 40 to end the reading.

As described above, in this embodiment,
Affix UHF band RFID tags that can be read long distances to multiple documents,
Put the document storage box for storing documents in an anechoic box covered with an electromagnetic wave absorber,
Arrange multiple antennas in the anechoic box on the rotation axis and on the axis orthogonal to the rotation axis,
While rotating the document storage box in the anechoic box, read with the reader,
The electronic tag reading system 100 that displays the reading result on the external monitor has been described.

According to this embodiment, it is possible to collectively read UHF band RFIDs attached to a plurality of documents in a document storage box, and it is possible to grasp the contents and quantity of documents in a short time without labor. it can.
The reason why the electronic tag reading system 100 uses an anechoic box is to prevent erroneous reading of a nearby UHF band RFID tag and to stabilize the radio wave environment.
The reason why the electronic tag reading system 100 rotates and reads the storage box 80 is that when reading a plurality of UHF band RFID tags at a time, the null point due to the distance between the reader and the tag can be avoided by rotating compared to stationary or moving. This is because the orientation of the electronic tag with respect to the antenna can be changed, and reading can be performed more reliably.
The reason why the electronic tag reading system 100 arranges the antenna on the coordinate axis orthogonal to the rotation axis is that, when the RFID tags are aligned, the electronic tag can always be read facing the electronic tag, which is effective for reading.
The reason why the electronic tag reading system 100 displays the reading result on the monitor 70 (external monitor) is that the RFID tag reading in the anechoic box can be monitored from the outside.
The turntable 10 includes a rotation position sensor such as a limit switch that stops at the same position as the rotation start time, and facilitates taking in and out of the document storage box in the anechoic box.
The turntable may be a ring-shaped annular turntable 12, and an antenna 24 is installed in the center space of the ring-shaped turntable 12 or in the lower part of the center space.
As described above, the electronic tag reading system 100 according to this embodiment efficiently reads by arranging two or more antennas so as to surround the storage box 80 and rotating the storage box 80. By rotating the storage box 80, when reading a large number of UHF band RFID passive tags whose directions are not constant, the reading can be performed from any angle until the reading is completed, and the reading accuracy is improved.

"Automatic reread processing when timeout occurs"
The automatic re-reading process when time-out occurs may be as follows.

"Reader-tag distance change process"
An antenna position changing mechanism is provided, and the processing unit 61 generates a control signal to the antenna position changing mechanism and slides the antenna in the anechoic box 30 to change the distance between the reader and the tag. Read. For example, the antenna position changing mechanism moves a predetermined antenna inward of the anechoic box 30 according to the control signal, thereby reducing the distance between the antenna and the storage box.
Alternatively, a turntable position changing mechanism is provided, and the processing unit 61 generates a control signal to the turntable position changing mechanism, slides the turntable 10 in the anechoic box 30, changes the distance between the reader and the tag, and performs processing. The unit 61 reads again.

"Reader-tag angle changing process"
An antenna mounting angle changing mechanism is provided, the processing unit 61 generates a control signal to the antenna mounting angle changing mechanism, tilts the antenna in the anechoic box, changes the reader-tag angle, and the processing unit 61 Read.

  By changing the distance between the reader and the tag, a null point due to the change in the distance between the reader and the tag can be avoided, and by changing the angle between the reader and the tag, the direction of the electronic tag with respect to the antenna can be changed.

Embodiment 2. FIG.
FIG. 6 is a configuration diagram of the anechoic box 30 of the electronic tag reading system 100 according to the second embodiment. The configuration of the anechoic box 30 according to the second embodiment will be described with reference to FIG. In the description of FIG. 6, the same reference numerals are given to configurations having the same functions as those in FIG. 2 of the first embodiment, and description thereof is omitted.

  As shown in FIG. 6, in the anechoic box 30, the door 32 opens and closes forward, and the top plate 31 opens and closes upward. An antenna 21 is installed on the inner side (inner wall surface) of the top plate 31 that opens and closes.

  Two slide shafts 33 are installed on the bottom surface of the casing 39 of the anechoic box 30. An annular turntable 12 is placed on the slide shaft 33. The annular turntable 12 is slidable before and after the housing 39 by two slide shafts 33. The slide shaft 33 slides forward (in the direction of the door 32) and extends. In the state where the slide shaft 33 is extended, the annular turntable 12 is positioned outside the anechoic box 30.

  A storage box 80 is mounted on the annular turntable 12. By opening the top plate 31 and the door 32 and sliding the turntable 10 forward by the slide shaft 33, the storage box 80 can be mounted on the annular turntable 12, and the storage box 80 is carried in and out of the anechoic box 30. To do. The opening / closing mechanism of the top plate 31 and the door 32 and the two slide shafts 33 are a loading / unloading mechanism for loading / unloading the storage box 80. The annular turntable 12 may have a plurality of storage boxes 80 mounted thereon.

  The annular turntable 12 is a donut shape. In the annular turntable 12, the antenna 24 can be arranged inside the central space of the annular turntable 12 or below the central space. The antenna 24 is fixed to the bottom of the slide shaft 33 or the casing 39. The annular turntable 12 is rotated in one direction or in both forward and reverse directions by a motor (not shown). Since the antenna 24 is fixed to the bottom of the slide shaft 33 or the casing 39, the antenna 24 does not rotate even if the annular turntable 12 rotates.

  Further, the slide shaft 33 can be used as a turntable position changing mechanism for changing the reader-tag distance described in the first embodiment. For example, the turntable position changing mechanism moves the annular turntable 12 back and forth on the slide shaft 33 according to the control signal, or moves the slide shaft 33 itself together with the turntable 12 to the left and right. The distance can be changed.

  As described above, the anechoic box 30 of the electronic tag reading system 100 according to the present embodiment repels the upper antenna 21 together with the top plate 31, opens and closes the front antenna 26 together with the door 32, and A loading / unloading mechanism for sliding the document storage box by sliding with the slide shaft 33 is provided to facilitate loading and unloading of the document storage box into the anechoic box.

  As described above, the anechoic box 30 of the electronic tag reading system 100 according to the present embodiment includes the opening / closing mechanism of the top plate 31 and the door 32 and the two slide shafts 33. The workability of carrying in / out can be improved. Moreover, the anechoic box 30 of the electronic tag reading system 100 according to the present embodiment includes the annular turntable 12, so that the antenna 24 can also be provided at the bottom, and the reading performance of the electronic tag can be improved. . Moreover, it is possible to use a slide base position changing mechanism using the slide shaft 33.

  While the first and second embodiments have been described above, the two embodiments may be combined. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

FIG. 7 is a diagram illustrating an example of hardware resources of the control computer 60 in the embodiment.
In FIG. 7, the control computer 60 includes a CPU 911 (also referred to as a central processing unit, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a processor) that executes a program. The CPU 911 is connected to the ROM 913, the RAM 914, the communication board 915, the display device 901, the keyboard 902, the mouse 903, the FDD 904, the CDD 905, the printer device 906, the scanner device 907, and the magnetic disk device 920 via the bus 912, and the hardware. Control the device. Instead of the magnetic disk device 920, a storage device such as an optical disk device or a memory card read / write device may be used.

The RAM 914 is an example of a volatile memory. The storage media of the ROM 913, the FDD 904, the CDD 905, and the magnetic disk device 920 are an example of a nonvolatile memory. These are examples of a storage device or a storage unit.
The communication board 915, the keyboard 902, the scanner device 907, the FDD 904, and the like are examples of an input unit and an input device.
Further, the communication board 915, the display device 901, the printer device 906, and the like are examples of an output unit and an output device.

The communication board 915 is connected to a WAN (wide area network) such as the Internet.
The magnetic disk device 920 stores an operating system 921 (OS), a window system 922, a program group 923, and a file group 924. The programs in the program group 923 are executed by the CPU 911, the operating system 921, and the window system 922.

  The program group 923 stores programs that execute the functions described as “˜units” in the description of the embodiments. The program is read and executed by the CPU 911.

  In the description of the embodiment, the file group 924 will be described as “read result of”, “comparison result of”, “determination result of”, “calculation result of”, and “processing result of”. Information, data, signal values, variable values, and parameters are stored as items of “˜file” and “˜database”. The “˜file” and “˜database” are stored in a recording medium such as a disk or a memory. Information, data, signal values, variable values, and parameters stored in a storage medium such as a disk or memory are read out to the main memory or cache memory by the CPU 911 via a read / write circuit, and extracted, searched, referenced, compared, and calculated. Used for CPU operations such as calculation, processing, output, printing, and display. Information, data, signal values, variable values, and parameters are temporarily stored in the main memory, cache memory, and buffer memory during the CPU operations of extraction, search, reference, comparison, operation, calculation, processing, output, printing, and display. Is remembered.

  In addition, the arrows in the flowchart described in the description of the embodiment mainly indicate input / output of data and signals, and the data and signal values are the memory of the RAM 914, the flexible disk of the FDD904, the compact disk of the CDD905, and the magnetic disk device 920. Recorded on a recording medium such as a magnetic disk, other optical disks, mini disks, and DVDs (Digital Versatile Disk). Data and signals are transmitted online via a bus 912, signal lines, cables, or other transmission media.

  In addition, what has been described as “˜unit” in the description of the embodiment may be “˜circuit”, “˜device”, “˜device”, “means”, and “˜step”, “ ~ Procedure "," ~ process ". In other words, what has been described as “˜unit” may be realized by firmware stored in the ROM 913. Alternatively, it may be implemented only by software, only hardware such as elements, devices, substrates, wirings, etc., or a combination of software and hardware, and further a combination of firmware. Firmware and software are stored as programs in a recording medium such as a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD. The program is read by the CPU 911 and executed by the CPU 911. That is, the program causes the computer to function as “to part”. Alternatively, the procedure or method of “to part” is executed by a computer.

  DESCRIPTION OF SYMBOLS 10 turntable, 11 rotational position sensor, 12 annular turntable, 21 antenna, 22 antenna, 23 antenna, 24 antenna, 25 antenna, 26 antenna, 30 anechoic box, 31 top plate, 32 door, 33 slide shaft, 39 housing, 40 reader, 42 read result, 50 tag list storage unit, 52 tag list, 60 control computer, 61 processing unit, 62 comparison unit, 63 result display unit, 64 controller, 65 read command, 66 stop command, 67 drive signal, 68 Position signal, 69 recording unit, 70 monitor, 80 storage box, 81 storage box tag, 82 electronic tag, 83 document binding (large), 84 document binding (small), 100 electronic tag reading system, 901 display device, 902 keyboard, 903 mouse, 904 FDD, 905 compact disc device, 06 printer, 907 scanner, 911 CPU, 912 Bus, 913 ROM, 914 RAM, 915 communication board, 920 a magnetic disk device, 921 operating system, 922 Window system, 923 Program group, 924 File group.

Claims (9)

A turntable that puts a storage box containing a plurality of electronic tags storing information and rotates the storage box;
An antenna that wirelessly communicates with an electronic tag using radio waves of a predetermined frequency;
A radio wave anechoic box that blocks radio waves of the predetermined frequency and has a turntable and an antenna installed therein,
A reader for reading information stored in an electronic tag via an antenna;
An electronic tag reading system comprising: a control computer that causes a reader to read information stored in an electronic tag while rotating a turntable. The electronic tag reading system further includes:
A tag list storage unit for storing a tag list of electronic tags stored in a storage box;
The control computer compares the tag list stored in the tag list storage unit with the reading result of the reader, and the reader reads the information of all the electronic tags described in the tag list stored in the tag list storage unit. 2. The electronic tag reading system according to claim 1, wherein the information stored in the electronic tag is read by the reader while rotating the turntable.   3. The electronic tag reading system according to claim 2, further comprising a monitor for displaying a comparison result between the tag list stored in the tag list storage unit and the reading result of the reader. A plurality of antennas are arranged in the anechoic box, and the plurality of antennas are arranged in a three-dimensional axial direction perpendicular to the anechoic box,
4. The electronic tag reading system according to claim 1, wherein the reader sequentially switches a plurality of antennas in a time division manner.   5. The electronic tag reading system according to claim 1, wherein the turntable has a ring shape, and the antenna is disposed in a central space of the turntable. The turntable includes a rotation position sensor that detects the rotation position of the turntable,
6. The electronic tag reading system according to claim 1, wherein the control computer returns the turntable to the rotation start position at the end of reading based on the detection result of the rotation position of the rotation position sensor.   The electronic tag reading system according to any one of claims 1 to 6, wherein the anechoic box includes a carry-in / out mechanism for carrying in / out the storage box.   8. The electronic tag reading system according to claim 1, wherein the electronic tag is an RFID (Radio Frequency IDentification) tag, and the predetermined frequency is a frequency in a UHF (Ultra High Frequency) band. . In an electronic tag reading method of an electronic tag reading system comprising a tag list storage unit storing a tag list of a plurality of electronic tags, and an anechoic box in which a turntable and an antenna are installed,
A rotating process in which a turntable rotates a storage box containing a plurality of electronic tags storing information;
A reading process in which the reader reads information stored in the electronic tag by wireless communication via the antenna with the electronic tag with radio waves of a predetermined frequency while rotating the storage box by the rotating process,
The control computer compares the tag list stored in the tag list storage unit with the reading result of the reader, and the reader reads the information of all the electronic tags described in the tag list stored in the tag list storage unit. And a control process for continuing the read process.

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