WO2021039887A1 - Système de lecture - Google Patents

Système de lecture Download PDF

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Publication number
WO2021039887A1
WO2021039887A1 PCT/JP2020/032312 JP2020032312W WO2021039887A1 WO 2021039887 A1 WO2021039887 A1 WO 2021039887A1 JP 2020032312 W JP2020032312 W JP 2020032312W WO 2021039887 A1 WO2021039887 A1 WO 2021039887A1
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WO
WIPO (PCT)
Prior art keywords
antenna
article identification
reading
identification information
tag
Prior art date
Application number
PCT/JP2020/032312
Other languages
English (en)
Japanese (ja)
Inventor
毅人 根岸
由美子 信國
義明 平野
Original Assignee
帝人株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 帝人株式会社 filed Critical 帝人株式会社
Priority to CN202080060871.6A priority Critical patent/CN114341868B/zh
Publication of WO2021039887A1 publication Critical patent/WO2021039887A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people

Definitions

  • This disclosure relates to a reading system.
  • Patent Document 1 describes a technique for grasping the inventory status of medical products in a hospital, determining the necessity of ordering medical products according to the inventory status, and notifying the determination result.
  • Patent Document 1 describes a method of inputting information to a computer by keyboard input or barcode reading, although it is related to inventory information rather than usage record.
  • the present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a reading system that manages the usage record of goods with a small user burden.
  • the reading system is A box provided with a slot for inserting a card with an article identification tag for storing article identification information for identifying an article, and a box An antenna that receives radio waves radiated from the article identification tag when the card is inserted into the box, and A reading means for reading the article identification information from the article identification tag via the antenna, and A transmission means for transmitting the article identification information read by the reading means to a receiving device is provided.
  • An operation confirmation tag attached to the box and storing operation confirmation information read for confirmation of the reading operation by the reading means is further provided.
  • the antenna further receives the radio wave radiated from the operation confirmation tag, and receives the radio wave.
  • the reading means further reads the operation confirmation information from the operation confirmation tag via the antenna, and further reads the operation confirmation information.
  • the transmitting means may transmit the abnormality notification information notifying that the reading operation by the reading means is abnormal to the receiving device.
  • the transmitting means may transmit the collection instruction information instructing the collection of the cards to the receiving device.
  • the transmitting means may transmit the article identification information to the receiving device.
  • the transmitting means may transmit the same article identification information to the receiving device.
  • the transmitting means does not have to transmit the transmitted article identification information to the receiving device until a predetermined time elapses after the transmitting means transmits the article identification information to the receiving device. ..
  • the transmitting means may further transmit device identification information for identifying the reading means to the receiving device.
  • the transmitting means may further transmit time identification information for identifying the time when the reading means reads the article identification information to the receiving device.
  • the input hole is a slit provided in the top plate of the box.
  • a limiting member that restricts the movement of the card when the card passes through the slit may be further provided at a position on the inner surface of the top plate of the box that overlaps the slit in a plan view.
  • the limiting member is a sheet-like member in which a second slit is provided at a position where it overlaps with the first slit, which is the slit, in a plan view.
  • the width of the second slit may be narrower than the width of the first slit.
  • the length of the slit may be shorter than the length of the card and longer than the width of the card.
  • the radio wave radiated by the second antenna included in the article identification tag is linearly polarized wave in which the vibration direction of the electric field is the longitudinal direction of the card.
  • the first antenna which is the antenna, may receive vertically polarized waves, which are linearly polarized waves radiated by the second antenna.
  • the radio wave radiated by the second antenna included in the article identification tag is linearly polarized wave in which the vibration direction of the electric field is the width direction of the card.
  • the first antenna which is the antenna, may receive horizontally polarized waves, which are linearly polarized waves radiated by the second antenna.
  • Configuration diagram of the reading system according to the first embodiment of the present disclosure Configuration diagram of the control device according to the first embodiment of the present disclosure.
  • Configuration diagram of the management card according to the first embodiment of the present disclosure Perspective view of the reader according to the first embodiment of the present disclosure.
  • Back view of the top plate Explanatory diagram of how to read tag information
  • Configuration diagram of the management card according to the second embodiment of the present disclosure Perspective view of the reader according to the second embodiment of the present disclosure.
  • the reading system 1000 is a system that reads tag information from a wireless tag 70 attached to a management card 60 corresponding to the article 400 in order to manage the usage record of the article 400 with a small user burden.
  • the tag information is, for example, information indicating a character string composed of a numerical value or an alphabet.
  • the reading system 1000 includes a control device 10, a reading device 100, and a storage box 120.
  • the control device 10 is a device that controls the overall operation of the reading system 1000.
  • the control device 10 controls the reading of tag information by the reading device 100.
  • the control device 10 is connected to the reading device 100 via the communication cable 50, instructs the reading device 100 to read the tag information, and receives the read tag information from the reading device 100. Further, the control device 10 transmits the tag information to the terminal device 200 via the communication network 300.
  • the communication cable 50 is, for example, a USB (Universal Serial Bus) cable.
  • the control device 10 is, for example, a terminal device such as a notebook computer, a tablet terminal, or a smartphone.
  • the control device 10 includes a processor 11, a flash memory 12, a touch screen 13, a first communication interface 14, and a second communication interface 15.
  • the processor 11 controls the overall operation of the control device 10.
  • the processor 11 includes, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and an RTC (Real Time Clock).
  • the flash memory 12 stores various types of information.
  • the touch screen 13 is a user interface, receives various information from the user, and presents various information to the user.
  • the first communication interface 14 communicates with the reading device 100 via the communication cable 50 under the control of the processor 11.
  • the second communication interface 15 communicates with the terminal device 200 via the communication network 300 under the control of the processor 11.
  • the control device 10 is an example of the transmission means in the present disclosure.
  • the terminal device 200 is a device that receives information from the control device 10 via the communication network 300 and executes various processes. For example, the terminal device 200 executes a process of presenting the information received from the control device 10 to the user and a process of ordering the article 400 according to the instruction by the user. The terminal device 200 may automatically execute the process of ordering the article 400 based on the information received from the control device 10.
  • the terminal device 200 is, for example, a computer including a processor, a flash memory, a touch screen, and a communication interface.
  • the communication network 300 connects the control device 10 and the terminal device 200 in a communicable manner.
  • the communication network 300 may be a LAN (Local Area Network) or a WAN (Wide Area Network).
  • the terminal device 200 is an example of the receiving device in the present disclosure.
  • the article 400 is an article to be managed, and the usage record is managed.
  • the usage record is represented by, for example, when and where it was used.
  • the article 400 is a medical product in a medical field.
  • a medical product for example, a catheter or the like can be considered.
  • a management card 60 for managing the article 400 is attached to the article 400.
  • the management card 60 may be attached to a case for storing the article 400.
  • the management card 60 is removed from the article 400 or the case and inserted into the reading device 100.
  • the management card 60 is a card-shaped member provided with a wireless tag 70.
  • the shape of the management card 60 is card-shaped, and the length of the management card 60 in the width direction (hereinafter, appropriately referred to as “width”) is the length of the management card 60 in the longitudinal direction (hereinafter, appropriately referred to as “length”). It is shorter than the length in the thickness direction of the management card 60 (hereinafter, appropriately referred to as “thickness”).
  • the length of the management card 60 is indicated by L1
  • W1 the width of the management card 60 is indicated by W1.
  • the axis extending upward in the vertical direction is the Z axis
  • the axis orthogonal to the Z axis is the X axis
  • the axis orthogonal to the Z axis and the X axis is the Y axis.
  • FIG. 3 shows that when the management card 60 is inserted into the reader 100, the longitudinal direction of the management card 60 is parallel to the Z axis and the thickness direction of the management card 60 is orthogonal to the X axis. There is.
  • the wireless tag 70 is a passive tag that stores article identification information, which is tag information for identifying the article 400 to which the management card 60 is attached.
  • a passive tag uses a radio wave for power supply as a power source in response to receiving a radio wave for supplying power (hereinafter, appropriately referred to as "radio wave for power supply"), and a radio wave containing tag information (hereinafter, referred to as "radio wave for power supply”). It is a radio tag that appropriately emits "tag information containing radio waves").
  • the passive tag is a tag that does not have a built-in battery among wireless IC (Integrated Circuit) tags in an RFID (Radio Frequency Identification) system.
  • the wireless tag 70 is an example of an article identification tag in the present disclosure.
  • the wireless tag 70 includes a base material 71, a feeding point 72, a dipole antenna 73, and an IC chip 76.
  • the base material 71 is a sheet-like member that supports the dipole antenna 73 and the IC chip 76.
  • the base material 71 is composed of, for example, a transparent insulator.
  • the feeding point 72 is a terminal pair for supplying an AC signal corresponding to the power supply radio wave from the dipole antenna 73 to the IC chip 76 and supplying an AC signal corresponding to the tag information containing radio wave from the IC chip 76 to the dipole antenna 73. Is.
  • the dipole antenna 73 is a linear antenna in which two conductors, that is, two elements are symmetrically provided.
  • the dipole antenna 73 includes an element 74 and an element 75 extending in opposite directions with respect to the feeding point 72.
  • the element 74 has a shape that extends in the longitudinal direction of the wireless tag 70 while meandering in the width direction of the wireless tag 70, and has a short length in the thickness direction of the wireless tag 70.
  • the element 74 has the same shape as the element 75.
  • the element 74 and the element 75 are arranged symmetrically with respect to the feeding point 72.
  • the dipole antenna 73 supplies the current generated by the potential difference generated between the element 74 and the element 75 to the IC chip 76 via the feeding point 72 when receiving the power supply radio wave. Further, when the dipole antenna 73 radiates the radio wave containing the tag information, the dipole antenna 73 generates a potential difference between the element 74 and the element 75 according to the current supplied from the IC chip 76 via the feeding point 72.
  • the IC chip 76 has a function of obtaining electric power from a radio wave for power supply, a function of storing tag information, a function of radiating a radio wave containing tag information, and the like.
  • the length of the element 74 in the longitudinal direction of the wireless tag 70 and the length of the element 75 in the longitudinal direction of the wireless tag 70 are about 1/4 of the wavelengths of the radio waves radiated and received, respectively. That is, the length of the dipole antenna 73 in the longitudinal direction of the wireless tag 70 is about 1 ⁇ 2 of the wavelengths of the radio waves radiated and received.
  • the antenna 30 is arranged so that the power supply radio wave radiated by the antenna 30 described later and the tag information containing radio wave received by the antenna 30 are vertically polarized.
  • the orientation of the management card 60 inserted into the reading device 100 is limited so that the longitudinal direction of the management card 60 is parallel to the Z axis. Therefore, the wireless tag 70 is fixed to the management card 60 in a direction in which the longitudinal direction of the management card 60 and the longitudinal direction of the wireless tag 70 coincide with each other so that the vertically polarized light can be received and radiated.
  • the longitudinal direction of the wireless tag 70 is the direction in which the dipole antenna 73 extends, and is the polarization direction of the radio waves that the wireless tag 70 can receive and radiate.
  • the vertically polarized wave is a linearly polarized wave in which the vibration direction of the electric field is the Z-axis direction.
  • the dipole antenna 73 is an example of the second antenna in the present disclosure.
  • the method of attaching the wireless tag 70 to the management card 60 can be adjusted as appropriate.
  • the wireless tag 70 may be attached to the surface of the management card 60 with double-sided tape.
  • the wireless tag 70 may be sandwiched between two sheet-shaped members constituting the management card 60.
  • the user When using the article 400, the user removes the management card 60 attached to the article 400 from the article 400 and puts it in the storage box 120 via the reading device 100.
  • the reading device 100 reads the article identification information from the wireless tag 70 attached to the management card 60 inserted in the reading device 100, and transmits the read article management information to the terminal device 200. Therefore, the user of the terminal device 200 can know that the article 400 has been used, and can replenish the article 400, place an order, or the like.
  • control device 10 a reading device 100, and a storage box 120 are shown in FIG. 1, these are prepared for each place where the article 400 is used, for example.
  • the place of use of the article 400 is, for example, a hospital room.
  • management card 60 and one article 400 are shown in FIG. 1, it goes without saying that there may basically be a plurality of these at each place of use.
  • the user of the terminal device 200 can quickly know which article 400 was used and how many articles were used in which usage location from the article identification information received from the control device 10 arranged at each usage location.
  • the terminal device when the user of the article 400 uses the article 400, the terminal device indicates that the article 400 has been used by simply inserting the management card 60 attached to the article 400 into the reading device 100. It can notify 200 users.
  • the timing at which the management card 60 is inserted into the reading device 100 can be appropriately adjusted.
  • the management card 60 may be inserted into the reading device 100 immediately before the use of the article 400, or may be inserted into the reading device 100 immediately after the use of the article 400.
  • the management card 60 is an example of the card in the present disclosure.
  • the reading device 100 is a device that reads the article identification information from the wireless tag 70 attached to the management card 60.
  • the reading device 100 includes a reader / writer 20, an antenna 30, a communication cable 40, a wireless tag 80, and a loading box 110.
  • the reader / writer 20 reads the tag information from the passive tag according to the control by the control device 10. Specifically, the reader / writer 20 reads the article identification information from the wireless tag 70, which is a passive tag, and reads the operation confirmation information from the wireless tag 80, which is a passive tag.
  • the article identification information and the operation confirmation information are appropriately referred to as tag information.
  • the reader / writer 20 can write tag information to the passive tag according to the control by the control device 10, but the description of writing the tag information will be omitted.
  • the reader / writer 20 is connected to the control device 10 via the communication cable 50. Further, the reader / writer 20 is connected to the antenna 30 via the communication cable 40.
  • the communication cable 40 is, for example, a coaxial cable for transmitting a high frequency signal.
  • the reader / writer 20 When the reader / writer 20 receives the information instructing the reading of the tag information from the control device 10, the reader / writer 20 transmits a high-frequency signal corresponding to the power supply radio wave to the antenna 30. Further, when the reader / writer 20 receives a high frequency signal corresponding to the tag information containing radio wave from the antenna 30, the reader / writer 20 transmits the tag information indicated by the received high frequency signal to the control device 10.
  • the reader / writer 20 obtains tag information from the passive tag by a radio wave method using radio waves in the UHF (Ultra High Frequency) band, that is, a frequency between 300 MHz and 3 GHz (for example, 920 MHz). It shall be read.
  • UHF Ultra High Frequency
  • the reader / writer 20 includes a processor that controls the overall operation of the reader / writer 20, a device-side communication interface that is connected to the control device 10 via the communication cable 50, and an antenna that is connected to the antenna 30 via the communication cable 40. It is equipped with a side communication interface and various electric circuits involved in transmitting and receiving radio waves.
  • the processor includes, for example, a CPU, ROM, RAM, and RTC.
  • the electric circuit includes, for example, a modulation circuit, a demodulation circuit, an oscillation circuit, and a power supply circuit.
  • the reader / writer 20 is an example of the reading means in the present disclosure.
  • the antenna 30 is an antenna that receives radio waves including tag information under the control of the reader / writer 20. Specifically, the antenna 30 radiates a power supply radio wave corresponding to a high frequency signal supplied from the reader / writer 20 via the communication cable 40. Further, the antenna 30 receives the tag information-containing radio wave radiated by the passive tag in response to the reception of the power supply radio wave. The antenna 30 transmits a high-frequency signal corresponding to the tag information-containing radio wave to the reader / writer 20 via the communication cable 40.
  • the shape of the antenna 30 is card-shaped, and the width of the antenna 30 is shorter than the length of the antenna 30 and sufficiently longer than the thickness of the antenna 30.
  • the longitudinal direction of the antenna 30 is parallel to the Z axis, the width direction of the antenna 30 is parallel to the Y axis, and the thickness direction of the antenna 30 is parallel to the X axis.
  • the direction of the management card 60 inserted into the reader 100 is such that the radio tag 70 attached to the management card 60 receives the radio wave for power supply which is vertically polarized and is vertically polarized. It is restricted to emit radio waves containing tag information. Therefore, the antenna 30 is fixed inside the input box 110 so that vertically polarized waves can be transmitted and received. Specifically, the antenna 30 radiates a radio wave for power supply that is vertically polarized in the positive direction of the X-axis, and emits a radio wave containing tag information that is vertically polarized and is directed in the negative direction of the X-axis. Arranged to receive.
  • the antenna 30 is an example of the antenna and the first antenna in the present disclosure.
  • the wireless tag 80 is a passive tag attached to the reading device 100 in order to determine whether or not the reading device 100 is in a state where the tag information can be read.
  • the wireless tag 80 is arranged so that the operation confirmation information stored in the wireless tag 80 can be constantly read by the reading device 100.
  • the wireless tag 80 is fixed inside the input box 110 so as to receive the radio wave for power supply which is vertically polarized and radiate the radio wave containing the tag information which is vertically polarized. That is, the wireless tag 80 is fixed inside the loading box 110 in a direction in which the longitudinal direction of the wireless tag 80 is parallel to the Z axis so that vertically polarized light can be received and radiated.
  • the radio tag 80 is preferably arranged so that the radiation surface of the radio tag 80 and the radiation surface of the antenna 30 are parallel to each other, that is, the radiation surface of the radio tag 80 is orthogonal to the X-axis.
  • the operation confirmation information is information read for confirming the reading operation by the reader / writer 20.
  • the operation confirmation information may be any information as long as it is information that can be distinguished from the article identification information.
  • the operation confirmation information may be any information as long as it can be identified as the information stored in the wireless tag 80.
  • the wireless tag 80 has basically the same configuration as the wireless tag 70, except that the tag information to be stored is different.
  • the wireless tag 80 is an example of the operation confirmation tag in the present disclosure.
  • the insertion box 110 is a box that accepts the insertion of the management card 60 with the wireless tag 70 attached.
  • the loading box 110 has a function of limiting the orientation of the management card 60 so that the reading device 100 can easily read the article identification information. Further, the loading box 110 has a function of delivering the management card 60 in which the article identification information is read to the storage box 120.
  • the loading box 110 basically has a shape in which the bottom plate is removed from a rectangular parallelepiped box having a top plate, a bottom plate, a front plate, a rear plate, a right plate, and a left plate.
  • the top plate is the plate with the larger Z-axis coordinates of the two plates orthogonal to the Z-axis.
  • the bottom plate is the plate having the smaller Z-axis coordinate of the two plates orthogonal to the Z-axis.
  • the front plate is the plate having the smaller Y-axis coordinate of the two plates orthogonal to the Y-axis.
  • the rear plate is the plate having the larger Y-axis coordinate among the two plates orthogonal to the Y-axis.
  • the right plate is the plate with the larger X-axis coordinate of the two plates orthogonal to the X-axis.
  • the left plate is the plate with the smaller X-axis coordinates of the two plates orthogonal to the X-axis.
  • the antenna 30 is attached to the inner surface of the left plate.
  • a wireless tag 80 is attached to the inner surface of the right plate.
  • a slit 111 is provided on the top plate, and a limiting member 130 having a slit 131 is provided
  • FIG. 5 shows a state in which the top plate 112 is viewed in a plan view from the inside of the loading box 110.
  • the top plate 112 is provided with a slit 111 extending in the Y-axis direction.
  • the slit 111 is an elongated hole provided in the top plate 112 for receiving the insertion of the management card 60.
  • L2 is longer than W1 and shorter than L1.
  • the management card 60 is prevented from being inserted horizontally, and the management card 60 is inserted vertically.
  • the fact that the management card 60 is oriented sideways means that the longitudinal direction of the management card 60 is substantially parallel to the Y axis.
  • the vertical orientation of the management card 60 means that the longitudinal direction of the management card 60 is substantially parallel to the Z axis.
  • W2 is not too long with respect to the thickness of the management card 60. This is because the longer the W2 is with respect to the thickness of the management card 60, the more difficult it is to maintain the thickness direction of the management card 60 and the X-axis parallel to each other when the management card 60 is inserted.
  • a limiting member 130 having a slit 131 extending in the Y-axis direction is attached so that the slit 111 and the slit 131 overlap each other.
  • the limiting member 130 is made of, for example, a material that is highly elastic and easily rubs against the management card 60.
  • W3 is shorter than W2 and further shorter than the thickness of the management card 60.
  • the management card 60 when the management card 60 is inserted, the management card 60 is sandwiched by the portions on both sides of the slit 131 in the limiting member 130, a frictional force is generated between the management card 60 and the limiting member 130, and the management card 60 movements are restricted.
  • the management card 60 when the management card 60 is inserted, it is possible to prevent the management card 60 from moving too fast or the management card 60 from being significantly deviated from the ideal orientation.
  • the ideal orientation of the management card 60 means that the longitudinal direction of the management card 60 is parallel to the Z axis and the thickness direction of the management card 60 is orthogonal to the X axis.
  • the input box 110 is an example of a box in the present disclosure.
  • the slit 111 is an example of the input hole, the slit and the first slit in the present disclosure.
  • the slit 131 is an example of the second slit in the present disclosure.
  • the storage box 120 is a box for storing the management card 60 inserted in the input box 110.
  • the storage box 120 can store a large number of management cards 60.
  • the management card 60 stored in the storage box 120 may be collected every specified time (for example, 24 hours), or is collected in response to the number of stored management cards 60 reaching the specified number. You may.
  • a hole 121 is provided in the top plate of the storage box 120, and the loading box 110 is arranged on the storage box 120 so as to close the hole 121.
  • the antenna 30 is installed on the inner surface of the left plate 113 included in the loading box 110 so that the radial surface of the antenna 30 is orthogonal to the X axis and the longitudinal direction of the antenna 30 is parallel to the Z axis.
  • the longitudinal direction of the antenna 30 coincides with the polarization direction of the linearly polarized waves radiated by the antenna 30.
  • the wireless tag 80 is placed on the inner surface of the right plate 114 included in the loading box 110 so that the radial surface of the antenna included in the wireless tag 80 is orthogonal to the X axis and the longitudinal direction of the wireless tag 80 is parallel to the Z axis. Will be installed.
  • the longitudinal direction of the wireless tag 80 coincides with the polarization direction of linearly polarized waves radiated by the antenna included in the wireless tag 80.
  • the antenna 30 periodically emits radio waves for power supply according to the control by the reader / writer 20.
  • the wireless tag 80 receives the power supply radio wave radiated by the antenna 30, and radiates the tag information-containing radio wave including the operation confirmation information using the power supply radio wave as a power source.
  • the antenna 30 receives the tag information-containing radio wave radiated by the wireless tag 80. In this way, the wireless tag 80 is fixed at a position where it can receive the power supply radio wave radiated by the antenna 30. Therefore, the reading device 100 can always read the operation confirmation information from the wireless tag 80 in the normal operating state.
  • the reading device 100 cannot read the operation confirmation information from the wireless tag 80 in an abnormal operating state.
  • Various causes can be considered as the cause of the abnormal operating state.
  • the arrangement of the antenna 30 Is abnormal, the wireless tag 80 itself is abnormal, the arrangement of the wireless tag 80 is abnormal, or a foreign substance such as metal is thrown into the loading box 110. It is considered to be the cause of the operating condition.
  • the orientation of the management card 60 and the moving speed of the management card 60 depend on the shape and size of the management card 60, the shape and size of the slit 111, the material of the limiting member 130, the shape and size of the slit 131, and the like. It is decided to some extent. That is, the orientation of the management card 60 is limited to the orientation in which the longitudinal direction of the management card 60 is substantially parallel to the Z axis and the thickness direction of the management card 60 is substantially orthogonal to the X axis. Further, the moving speed of the management card 60 does not increase so much. As a result, the reading device 100 can read the article identification information a plurality of times from the wireless tag 70 attached to the management card 60 while the management card 60 falls inside the loading box 110.
  • the radio waves for power supply basically travel in the positive direction of the X-axis.
  • the tag information containing radio wave including the operation confirmation information and the tag information containing radio wave including the article identification information basically travel in the negative direction of the X axis.
  • the radio wave for power supply, the radio wave containing tag information including confirmation information, and the radio wave containing tag information including article identification information are both linearly polarized waves in which the vibration direction of the electric field is the Z-axis direction, in other words, vertical. It is polarized.
  • the reading process is executed in response to an operation instructing the control device 10 to start the reading process.
  • the processor 11 included in the control device 10 starts reading the tag information (step S101). Specifically, for example, the processor 11 transmits start instruction information instructing the reader / writer 20 to start reading the tag information.
  • the reader / writer 20 starts reading the tag information in response to receiving the start instruction information.
  • the reader / writer 20 controls the antenna 30 to repeatedly execute a process of radiating a radio wave for power supply and a process of receiving a radio wave containing tag information.
  • step S102 determines whether or not the tag information has been received. Specifically, the processor 11 determines whether or not the first communication interface 14 has received the tag information from the reader / writer 20.
  • the tag information is either the article identification information or the operation confirmation information. Further, in addition to the tag information, the reader / writer 20 transmits the time identification information, the reception strength information, and the device identification information to the control device 10.
  • the time identification information is information indicating the time when the reader / writer 20 reads the tag information.
  • the reception strength information is information indicating the reception strength of radio waves including tag information.
  • the device identification information is information indicating the identification information of the reader / writer 20. Information indicating the correspondence between the identification information of the reader / writer 20 and the installation location information indicating the location where the reader / writer 20 is installed is stored in a flash memory or the like provided in the terminal device 200. That is, the terminal device 200 can specify the installation location of the reader / writer 20 that has read the tag information from the device identification information.
  • the processor 11 determines whether or not the strength of the received radio wave is equal to or higher than the predetermined strength (step S103). For example, the processor 11 determines whether or not the reception intensity of the radio wave including the tag information is equal to or higher than the predetermined intensity based on the reception intensity information received from the reader / writer 20.
  • the default intensity is a threshold value for the reception intensity of radio waves.
  • the default intensity is weaker than the reception intensity of the tag information-containing radio wave radiated by the passive tag existing inside the input box 110, and less than the reception intensity of the tag information-containing radio wave radiated by the passive tag existing outside the input box 110. It is preferable that it is also strong. It is preferable that the predetermined intensity is obtained in advance by an experiment or the like prior to the execution of the reading process. It is preferable to ignore the tag information included in the tag information-containing radio wave having a reception intensity less than the predetermined intensity even if it is read. This is because there is a high possibility that such tag information is erroneously read from the wireless tag 70 attached to the management card 60 that has not been inserted into the insertion box 110.
  • the processor 11 determines that the strength of the received radio wave is equal to or higher than the predetermined strength (step S103: YES).
  • the processor 11 records the tag information (step S104). For example, the processor 11 records the tag information in the flash memory 12 in association with the time identification information and the device identification information.
  • the processor 11 determines whether or not the received tag information is the article identification information (step S105).
  • the tag information is either the article identification information or the operation confirmation information, and the operation confirmation information is predetermined. Therefore, the processor 11 determines whether or not the read tag information is the operation confirmation information.
  • step S105 determines whether or not the same article identification information has been continuously received (step S106). For example, the processor 11 determines whether or not the same article identification information has been received two or more times within the latest specified time (for example, 1 second).
  • the moving speed of the management card 60 inserted in the insertion box 110 is limited by the action of the limiting member 130. Therefore, when the management card 60 is properly inserted into the loading box 110, the article identification information is read from the wireless tag 70 attached to the management card 60 a plurality of times in succession.
  • the article identification information read a plurality of times in succession is determined to be the article identification information read from the wireless tag 70 attached to the correctly inserted management card 60.
  • the article identification information read only once is determined to be, for example, the article identification information erroneously read from the wireless tag 70 attached to the management card 60 that has not been inserted into the loading box 110.
  • step S107 the processor 11 determines whether or not the received article identification information has not been transmitted. For example, the processor 11 determines whether or not the received article identification information has not been transmitted within the latest specified time. This specified time is, for example, a collection cycle of the management card 60 (for example, one day). By this determination, for example, the article identification information erroneously read from the wireless tag 70 attached to the management card 60 stored in the storage box 120, and the article identification information already transmitted is transmitted again. Can be suppressed.
  • the processor 11 determines that the received article identification information has not been transmitted (step S107: YES)
  • the processor 11 transmits the article identification information to the terminal device 200 (step S108).
  • the processor 11 associates the article identification information with the time identification information and the device identification information, and transmits the article identification information to the terminal device 200 via the second communication interface 15.
  • the processor 11 updates the number of stored cards (step S109).
  • the number of storage cards is the number of management cards 60 stored in the storage box 120, and corresponds to the number of times that the article identification information has been transmitted since the management card 60 was last collected from the storage box 120.
  • the number of storage cards is reset when the management card 60 is collected from the storage box 120.
  • Information indicating the number of stored cards is stored in, for example, the flash memory 12.
  • step S110 determines whether or not the number of stored cards is equal to or greater than the specified value.
  • This specified value is a threshold value for determining whether or not to instruct to collect the storage card. This specified value is smaller than the upper limit of the number of management cards 60 that can be stored in the storage box 120.
  • step S110: YES the processor 11 transmits the collection instruction information to the terminal device 200 (step S111).
  • the collection instruction information is information that instructs the user to collect the management card 60 stored in the storage box 120.
  • step S102 determines that the tag information has not been received (step S102: NO), and determines that the strength of the received radio wave is not equal to or higher than the predetermined strength (step S103: NO), the received tag information is the article.
  • step S105: NO when it is determined that the information is not the identification information (step S105: NO), when it is determined that the same article identification information is not continuously received (step S106: NO), it is determined that the received article identification information is not untransmitted.
  • step S107: NO when it is determined that the number of stored cards is not equal to or more than the specified value (step S110: NO), when the process in step S111 is completed, whether or not the operation confirmation information has not been received for the specified time or longer. (Step S112).
  • the specified time is a threshold value for determining whether or not the reading device 100 is operating normally.
  • the specified time is a value larger than the maximum value of the duration of non-reception of the operation confirmation information when the reading device 100 is operating normally.
  • the specified time is, for example, a time of several seconds to several minutes.
  • step S112 determines whether or not there is an instruction to reset the number of stored cards.
  • the instruction to reset the number of storage cards is an instruction given by the user when the management card 60 is collected from the storage box 120.
  • the reset instruction is realized, for example, by operating the touch screen 13 included in the control device 10 or transmitting information from the terminal device 200 to the control device 10.
  • step S114 When the processor 11 determines that there is an instruction to reset the number of stored cards (step S114: YES), the processor 11 resets the number of stored cards (step S115). For example, the processor 11 resets the number of stored cards stored in the flash memory 12 to 0. When the processor 11 determines that there is no reset instruction for the number of stored cards (step S114: NO), or when the process of step S115 is completed, the processor 11 returns the process to step S102.
  • the article identification information is read from the wireless tag 70 attached to the management card 60, and the article identification information is transmitted to the terminal device 200. Therefore, according to the present embodiment, it is possible to inform the user of the usage record of the article 400 with a small user burden.
  • the abnormality notification information is transmitted to the terminal device 200. Therefore, according to the present embodiment, it is possible to notify the user that there is a possibility of omission of reading the article identification information due to an abnormality in the reading device 100.
  • the terminal device 200 it is transmitted to the terminal device 200 that the number of management cards 60 stored in the storage box 120 has reached a predetermined number. Therefore, according to the present embodiment, it is possible to prevent the management card 60 from being stored too much in the storage box 120 and erroneously reading the transmitted article identification information.
  • the transmission of the article identification information is postponed. Therefore, according to the present embodiment, it is possible to reduce the probability that the management card 60 that has not been inserted into the insertion box 110 is erroneously determined to have been inserted into the insertion box 110.
  • the article identification information when the same article identification information is continuously read, the article identification information is transmitted to the terminal device 200. Therefore, according to the present embodiment, it is possible to reduce the probability that the management card 60 that has not been inserted into the insertion box 110 is erroneously determined to have been inserted into the insertion box 110.
  • the present embodiment it is suppressed that the same article identification information is transmitted to the terminal device 200 until the specified time elapses after the article identification information is transmitted to the terminal device 200. Therefore, according to the present embodiment, it is possible to reduce the probability that one use of the article 400 is erroneously determined to be a plurality of uses.
  • the device identification information is transmitted to the terminal device 200 in addition to the article identification information.
  • the terminal device 200 can specify the installation location of the reader / writer 20 that has read the tag information from the device identification information. Therefore, according to the present embodiment, it is possible to inform the user of the place where the article 400 is used.
  • the time identification information is transmitted to the terminal device 200 in addition to the article identification information. Therefore, according to the present embodiment, it is possible to inform the user of the time when the article 400 is used.
  • the limiting member 130 is provided in the vicinity of the slit 111 provided in the loading box 110. Therefore, according to the present embodiment, the moving speed of the management card 60 is limited, and improvement in reading accuracy of the article identification information can be expected.
  • the limiting member 130 is provided with a slit 131 having a width narrower than the width of the slit 111. Therefore, according to the present embodiment, the moving speed of the management card 60 is appropriately restricted, and improvement in reading accuracy of the article identification information can be expected.
  • the length of the slit 111 is shorter than the length of the management card 60 and longer than the width of the management card 60. Therefore, according to the present embodiment, the orientation of the management card 60 is restricted, and improvement in reading accuracy of the article identification information can be expected.
  • the reading device 100 reads the tag information from the tag information containing radio wave which is vertically polarized. Therefore, according to the present embodiment, the tag information can be read by the antenna 30 corresponding to linearly polarized waves. According to the present embodiment, the length of the management card 60 can be made about the same as the length of the wireless tag 70.
  • the wireless tag 70 is attached to the management card 61 so that the width direction of the management card 61 and the longitudinal direction of the wireless tag 70 coincide with each other.
  • W4 which is the width of the management card 61
  • L4 which is the length of the management card 61.
  • L2 which is the length of the slit 111, is longer than W4 and shorter than L4.
  • the antenna 30 included in the reading device 101 is parallel to the Y-axis in the longitudinal direction of the antenna 30 so that it can radiate and receive horizontally polarized waves in the Y-axis direction.
  • it is arranged inside the loading box 110 so that the radial surface of the antenna 30 is perpendicular to the X-axis.
  • the radio tag 80 included in the reader 101 has a longitudinal direction of the radio tag 80 parallel to the Y axis and a radiation surface of the radio tag 80 is the X axis so that horizontal polarization in the Y axis direction can be received and emitted. It is arranged inside the input box 110 so as to be orthogonal to.
  • the antenna 30 included in the reading device 101 is arranged so as to be able to radiate and receive horizontally polarized waves. Therefore, also in this embodiment, it is possible to read the article identification information by using the antenna 30 corresponding to the linearly polarized wave.
  • the tag information may be read using elliptically polarized waves including circularly polarized waves. Even in this case, it is preferable to adjust the shape, size, arrangement, and the like of the antenna 30, the wireless tag 80, the slit 111, the limiting member 130, and the like so that the tag information can be read well.
  • the storage box 120 is provided below the loading box 110 .
  • Any configuration may be adopted as long as the management card 60 to which the wireless tag 70 for storing the already transmitted article identification information is attached does not stay inside the loading box 110.
  • a tray for storing the management card 60 may be provided at the bottom of the loading box 110.
  • the wireless tag 70 and the wireless tag 80 are passive tags.
  • the wireless tag 70 and the wireless tag 80 may be active tags.
  • an example in which the wireless tag 70 and the wireless tag 80 include a dipole type antenna has been described.
  • the wireless tag 70 and the wireless tag 80 may include a monopole type antenna.
  • the wireless tag 70 is attached to the management card 60 as a means for acquiring information from the management card 60.
  • the management card 60 may be further provided with means other than the wireless tag 70.
  • the management card 60 may be further attached with a barcode, a two-dimensional barcode, or the like.
  • a limiting member 130 having a slit 131 is provided in the vicinity of the slit 111 in order to limit the moving speed when the management card 60 is inserted.
  • the limiting member 130 may not be provided in the vicinity of the slit 111. Further, the limiting member 130 may not be provided with the slit 131.
  • the outer shape of the input box 110 is a rectangular parallelepiped
  • the outer shape of the loading box 110 may be any outer shape as long as a configuration capable of reading good tag information when the management card 60 is inserted can be realized.
  • the antenna 30 and the wireless tag 80 are provided inside the loading box 110 has been described.
  • the antenna 30 and the wireless tag 80 may be provided outside the loading box 110.
  • the shape of the input hole is a slit shape which is an elongated rectangle.
  • the shape of the input hole is not limited to this example.
  • the length of the slit 111 which is the insertion hole, is longer than the width of the management card 60 and shorter than the length of the management card 60 has been described.
  • the length of the slit 111 may be longer than the length of the management card 60.
  • the article 400 to be managed is a medical product used in a medical field.
  • various articles whose usage record should be managed can be adopted.
  • the article 400 to be managed may be an article used in a factory, an office, or the like.
  • control device 11 processor, 12 flash memory, 13 touch screen, 14 first communication interface, 15 second communication interface, 20 reader / writer, 30 antenna, 40, 50 communication cable, 60, 61 management card, 70, 80 wireless Tag, 71 base material, 72 feeding point, 73 dipole antenna, 74,75 element, 76 IC chip, 100,101 reader, 110 input box, 111,131 slit, 112 top plate, 113 left plate, 114 right plate, 120 storage box, 121 hole, 130 limiting member, 200 terminal device, 300 communication interface, 400 article, 1000 reading system

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)

Abstract

La présente invention concerne une boîte de dépôt (110) qui est pourvue d'une fente (111) destinée à y déposer une carte, à laquelle est fixée une étiquette d'identification d'article qui stocke des informations d'identification d'article pour identifier un article. Lorsque la carte a été déposée dans la boîte de dépôt (110), une antenne (30) reçoit des ondes radio émises à partir de l'étiquette d'identification d'article. Un dispositif de lecture/d'écriture (20) lit les informations d'identification d'article à partir de l'étiquette d'identification d'article par le biais de l'antenne (30). Un dispositif de commande transmet les informations d'identification d'article lues par un dispositif de lecture/d'écriture (20) à un dispositif terminal.
PCT/JP2020/032312 2019-08-28 2020-08-27 Système de lecture WO2021039887A1 (fr)

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JP2019155359A JP6886499B2 (ja) 2019-08-28 2019-08-28 読取システム

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