WO2022239834A1 - 対象物体管理システム、対象物体管理サーバ及び対象物体管理方法 - Google Patents
対象物体管理システム、対象物体管理サーバ及び対象物体管理方法 Download PDFInfo
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- WO2022239834A1 WO2022239834A1 PCT/JP2022/020064 JP2022020064W WO2022239834A1 WO 2022239834 A1 WO2022239834 A1 WO 2022239834A1 JP 2022020064 W JP2022020064 W JP 2022020064W WO 2022239834 A1 WO2022239834 A1 WO 2022239834A1
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- target object
- identification information
- management server
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- 238000004891 communication Methods 0.000 claims abstract description 76
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- 238000003860 storage Methods 0.000 claims description 78
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/35—Services specially adapted for particular environments, situations or purposes for the management of goods or merchandise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to a target object management system, a target object management server, and a target object management method.
- This application claims priority to Japanese Patent Application No. 2021-081205 filed in Japan on May 12, 2021, the contents of which are incorporated herein.
- Patent Document 1 a communication system of LPWA (Low Power Wide Area) is used as a communication module.
- LPWA Low Power Wide Area
- the transmission speed of LPWA is much slower than that of cellular lines such as 4G lines and wireless LANs (Local Area Networks), data can be transmitted and received over a wide range.
- LPWA has a narrow frequency band and weak radio wave intensity, so it has the characteristic of extremely low power consumption. Therefore, the position of the target object can be efficiently detected over a long period of time with a small number of access points.
- LPWA when a target object exists between an access point and another access point, it can be determined that the target object exists in an area where the communicable areas of both access points overlap. However, if there is an obstacle between the access points, the communication device cannot communicate with one of the access points, and can only determine that it is in the communicable area of the other access point. For this reason, it becomes impossible to determine in which direction the target object on which the communication device is mounted exists in the area with respect to the access point.
- the present invention has been made in view of such circumstances, and is a target object management system capable of detecting the position (place) in which a target object exists within the communicable area of LPWA, A target object management server and a target object management method are provided.
- the present invention has been made to solve the above-described problems, and the target object management system of the present invention is attached to a target object, and uses a communication method of LPWA (Low Power Wide Area) to operate within a predetermined first communication range.
- a first device that transmits and receives data to and from an access point, and a predetermined terminal that is attached to the target object and has a second communication range that is narrower than the first communication range of the first device by a communication method different from LPWA.
- a second device that transmits and receives data; and a management server that detects the position of the target object from a first installation position where the access point is installed and a second installation position where the terminal is installed.
- the management server associates and manages first identification information identifying the first device and second identification information identifying the second device.
- the second device may be RFID (Radio Frequency Identification), and the terminal may be a reader/writer.
- RFID Radio Frequency Identification
- the terminal may be a reader/writer.
- the access point may be arranged in each area to be detected, and the terminal may be arranged in a location to be detected within the area.
- the first device can access the storage unit of the second device, and control information for the first device is written in the storage unit of the second device.
- the first device may read the control information from the storage unit and change the operating state of the first device.
- the target object management server of the present invention has a first device and a second device attached to a target object, and transmits and receives data to and from the first device within a predetermined first communication range by a communication method of LPWA (Low Power Wide Area). is connected by an information communication network to a terminal that transmits and receives data to and from the second device in a second communication range narrower than the first communication range of the first device, using a communication method different from LPWA
- a target object management server that associates and manages first identification information identifying the first device and second identification information identifying the second device, and a first installation position where the access point is installed and a second installation position where the terminal is installed, the position of the target object is detected.
- the target object management method of the present invention includes a process in which a first device is attached to a target object and transmits and receives data to and from an access point within a predetermined first communication range using the LPWA communication method; a process of transmitting and receiving data with a predetermined terminal attached to the target object and in a second communication range narrower than the first communication range of the first device by a communication method different from LPWA; detecting the position of the target object from a first installation position where a point is installed and a second installation position where the terminal is installed; and a first identification for identifying the first device by the management server.
- a target object management system capable of detecting the position (location) of a target object within an LPWA communicable area. can be provided.
- FIG. 1 is a block diagram showing a configuration example of a target object management system according to an embodiment of the present invention
- FIG. FIG. 4 is a conceptual diagram showing a correspondence relationship between the installation of access points and the communication range of a first device
- FIG. 4 is a conceptual diagram showing a correspondence relationship between installation of a reader/writer and a communication distance range of a second device
- 4 is a diagram showing a configuration example of a target object management table of a management database
- FIG. FIG. 10 is a diagram showing a change in the radio wave transmission cycle of the transmission/reception unit in the first device
- FIG. 10 is a diagram showing the operating state of the first device by rewriting the operating flag in the storage unit of the second device
- FIG. 10 is a diagram showing an example in which a portable reader/writer causes a first device to transmit radio waves at arbitrary timing regardless of the period of periodic transmission; 4 is a flowchart showing an operation example of processing for changing setting values of the first device in the target object management system according to the embodiment of the present invention;
- FIG. 1 is a block diagram showing a configuration example of a target object management system according to one embodiment of the present invention.
- the target object management system 100 includes a first device 101, a second device 102, access points 103_1 to 103_m, reader/writers 104_1 to 104_n, and a management server (target object management server) 105.
- the access points 103_1 to 103_m may be collectively referred to as an access point 103
- the reader/writers 104_1 to 104_n may be collectively referred to as a reader/writer 104 in some cases.
- the first device 101, the second device 102, the access points 103_1 to 103_m, the reader/writers 104_1 to 104_n, and the management server 105 are interconnected via an information communication network 500 including the Internet.
- the first device 101 is a communication module based on the LPWA communication system, and is attached to the target object 200 that is the target of position detection.
- the first device 101 as a wireless module is of an active type that operates using the power of a battery (battery 1014 described later).
- the first device 101 has an LPWA module (transmitting/receiving unit 1011 described later) such as Sigfox (registered trademark), LoRa (registered trademark), or ZETA (registered trademark).
- LPWA transmitting/receiving unit 1011 described later
- Sigfox registered trademark
- LoRa registered trademark
- ZETA registered trademark
- LPWA power consumption during transmission and reception is extremely low
- LPWA is a suitable communication method for long-distance communication of small data size information.
- LPWA a plurality of methods are known, and any method may be used.
- a communication method in which data can be communicated over a long distance (distance from several hundred meters to about 1 km) is preferable.
- the second device 102 is of a passive type that operates using power of radio waves from a reader/writer.
- the second device 102 is a device with a communication method different from the LPWA of the first device 101, such as an RFID (radio frequency identifier) tag.
- RFID radio frequency identifier
- the reader/writer 104 detects the position of the RFID tag by reading the identification information RFID_ID of the RFID tag.
- a receiver terminal may be arranged and a beacon for measuring the position of the transmitter may be used. In this embodiment, an example using an RFID tag as the second device 102 will be described.
- the access points 103_1 to 103_m are base stations in LPWA communication, and identify the position where the first device 101 exists, for example, from the communication coverage (communication coverage 301A, 302A, etc., which will be described later). That is, when the access points 103_1 to 103_m receive the identification information LPWA_ID (hereinafter referred to as first identification information) of the first device 101, the access points 103_1 to 103_m provide the management server 105 with the first identification information and their own identification information. Send identification information.
- first identification information hereinafter referred to as first identification information
- the reader/writers 104_1 to 104_n are terminals that transmit and receive data to and from RFID tags, and identify the position where the second device 102 exists, for example, based on a communicable range (communicable ranges 301A, 302A, etc., which will be described later). That is, when the reader/writers 104_1 to 104_n receive the identification information EFID_ID (hereinafter referred to as second identification information) of the second device 102, the readers/writers 104_1 to 104_n send the second identification information and their own identification information to the management server 105. Send identification information.
- EFID_ID hereinafter referred to as second identification information
- FIG. 2A is a conceptual diagram showing the correspondence relationship between the installation of access points and the communication range of the first device.
- FIG. 2B is a conceptual diagram showing the correspondence relationship between the installation of the reader/writer and the communication distance range of the second device.
- FIG. 2A shows an installation example of the access point 103 .
- the access point 103_1 can communicate within a communication range 301A (radius L1, for example, 1 km: first communication range). Since the communicable range 301A includes the building 301, when the access point 103_1 can transmit and receive data with the first device 101, the first device 101 is located inside or near the building 301. can be detected.
- the access point 103_2 can communicate within a communicable range 302A (radius L1, for example, 500 m to 1 km, arbitrarily set by radio wave intensity: first communication range). Since the communicable range 302A includes the building 302, when the access point 103_2 can transmit and receive data with the first device 101, the first device 101 is located inside or near the building 302. can be detected. As a result, each of the access points 103_1 and 103_2 determines whether the first device 101 is located in either the building 301 (for example, factory building) or the building 302 (for example, warehouse) located within the site (area) 400. detect whether That is, each of the access points 103_1 and 103_2 can detect in which of the buildings 301 and 302 the target object 200 (eg, industrial product) to which the first device 101 is attached is located.
- the target object 200 eg, industrial product
- FIG. 2B shows an example of installation of the reader/writer 104 in a building 302 (warehouse).
- Each of the reader/writers 104_1, 104_2, 104_3, and 104_4 can communicate within a communicable range 401A (radius L2, eg, 30 cm to 10 m: second communicable range).
- the communicable range 401A is narrower than the communicable ranges 301A and 302A.
- the reader/writer 104_1 is provided at a gate that conveys the target object 200 from the receiving area 401 to the warehousing area 402 .
- the reader/writer 104_2 is provided at a gate that conveys the target object 200 from the storage area 402 to the inventory area 403 .
- the reader/writer 104_3 is provided at a gate that conveys the target object 200 from the inventory area 403 to the delivery area 404 .
- the reader/writer 104_4 is provided at a gate that conveys the target object 200 from the delivery area 404 to the shipping area 405 .
- the reader/writer 104_1 detects that the target object 200 to which the second device 102 is attached has been transported from the receiving area 401 to the receiving area 402. . That is, the reader/writer 104_1 detects that the target object 200 is positioned in the storage area 402 .
- the reader/writer 104_2 detects that the target object 200 to which the second device 102 is attached has been transported from the storage area 402 to the inventory area 403. . That is, the reader/writer 104_2 detects that the target object 200 is located in the inventory area 403 .
- the reader/writer 104_3 detects that the target object 200 with the second device 102 added has been transported from the inventory area 403 to the delivery area 404 . That is, the reader/writer 104_3 detects that the target object 200 is located in the delivery area 404 .
- the reader/writer 104_4 detects that the target object 200 to which the second device 102 is attached has been transported from the delivery area 404 to the shipping area 405 . That is, the reader/writer 104_4 detects that the target object 200 is located in the shipping area 405 .
- each of the reader/writers 104_1 to 104_4 can detect, for example, in which of the warehousing area 402, the stock area 403, the warehousing area 404, and the shipping area 405 the target object 200 is located in the warehouse (building 302). can be done. Further, by providing the reader/writer 104_0 at the gate through which the target object is carried into the receiving area 401, it is possible to detect that the target object 200 is positioned in the receiving area 401. FIG.
- the management server 105 when the management server 105 receives the first identification information and the access point identification information from the access point 103, the first installation position indicating the arrangement position of the access point 103 corresponding to the first identification information. is written and stored in the management table of the management database 105D as the target object first position information. At this time, management server 105 reads the first installation position as position information corresponding to the access point identification information of access point 103 by referring to an access point management table (not shown).
- the management server 105 when the management server 105 receives the second identification information and the reader/writer identification information from the reader/writer 104, the management server 105 stores the second installation position indicating the arrangement position of the reader/writer 104 corresponding to the second identification information in the management database. This information is written and stored in the target object management table 105D as the target object second position information. At this time, the management server 105 refers to a reader/writer management table (not shown) to read the first arrangement information as position information corresponding to the access point identification information of the reader/writer 104 .
- the management server 105 sends information on the corresponding target object 200 to the user. Notify terminal. That is, when the user identification information of the user is supplied from the user's terminal, the management server 105 permits the user to access the target object management table corresponding to the user identification information in the management database 105D.
- the terminal transmits this identification information to the management server 105 .
- the management server 105 stores the information of the record corresponding to the identification information in the target object management table in the management database 105D. is sent to the user's terminal.
- the management server 105 synthesizes each of the target object first position information and the target object second position information, and synthesizes and displays, for example, the address and name of the building and the room information, which consist of the area and the location.
- the address is converted into location information indicating what floor the room is on in the building with the name of the address, and is notified to the user's terminal.
- the user can retrieve the first device setting value information, which is the setting value information of the first device 101, and the first device operation flag from the target object management table in the management database 105D via the terminal and the management server 105. can also be obtained.
- FIG. 3 is a diagram showing a configuration example of a target object management table of the management database 105D.
- This target object management table is provided for each user such as a company or an organization, is managed by the user identification information of the user, and cannot be referred to by other users.
- the target object management table includes first identification information, second identification information, target object information, target object first position information, target object second position information, first device set value information, and first device operation flag for each record. are provided.
- the first identification information is identification information of the LPWA communication module, which is the first device 101 .
- the second identification information is identification information of the RFID tag, which is the second device 102 .
- the target object information is information indicating the type of the target object 200 and the like, and is the name or category of an object that is moved by transportation, such as home electric appliances, furniture, marine products, agricultural products, and mail.
- target object 200 examples include objects such as home electric appliances, furniture, marine products, agricultural products, postal items, books, and machine parts.
- the target object 200 also includes storage bodies such as packages, boxes, and containers containing these objects, and pallets on which the storage bodies are placed.
- the target object first position information is first location information acquired by the management server 105 from the access point identification information of the access point 103, and includes predetermined information such as the address, business name, building name, etc. where the access point 103 is located. This is location information indicating an area.
- the target object second position information is second location information acquired by the management server 105 from the reader/writer identification information of the reader/writer 104, and includes information such as the loading gate, the unloading gate, and the room (what floor on which floor) where the reader/writer 104 is located. This is location information indicating a predetermined location such as the entrance of a room number).
- the first device setting value information indicates setting values related to communication of the LPWA communication module, which is the first device 101, and the like.
- the set values include, for example, the length of the transmission cycle (time, such as 10 minutes, 1 hour, etc.), the frequency of the radio waves to be transmitted, the intensity of the radio waves to be transmitted, and the like.
- the first device operating flag is a flag indicating whether the first device 101 is operating or is stopped (sleep mode). , and when the flag is "0" (when the flag is not set), it indicates that it is in operation.
- the first identification information and the second identification information are associated and managed in the target object management table. Therefore, even if the user recognizes only one of the identification information of each of the first device 101 and the second device 102, the target object to which the first device 101 and the second device 102 are added as a set 200 management information can be referenced in the target object management table.
- the target object first installation position and the target object second installation position are combined and stored in the target object management table. Therefore, if the first installation position of the target object indicates the first warehouse in Yokohama (the area at the location), and the second installation position of the target object indicates the loading gate of the inventory area (the location at the location), this target object By combining each of the first installation position and the second installation position of the target object, it is possible to detect that the target object 200 is located in the inventory area of the first warehouse in Yokohama.
- the first device 101 includes a transmission/reception section 1011 (LPWA communication module), a control section 1012 , a storage section 1013 and a battery 1014 .
- the control unit 1012 transmits the first identification information of the first device 101 to the access point 103 via the transmitting/receiving unit 1011 at a predetermined transmission cycle using radio waves of a predetermined wavelength and a predetermined intensity.
- the storage unit 1013 stores information such as the first identification information, transmission cycle, wavelength and intensity.
- the control unit 1012 refers to the storage unit 1013 and reads information such as the first identification information, the transmission period, the wavelength, and the intensity.
- the storage unit 1013 is, for example, a non-volatile memory such as an EEPROM (Electrically Erasable Programmable Read-Only Memory) capable of electrically rewriting data.
- the battery 1014 supplies electric power necessary for driving the first device 101 and each shared area of the storage unit 1023 (to be described later).
- the second device 102 also includes a transmission/reception unit 1021 (communication module of RFID communication method), a control unit 1022 and a storage unit 1023 .
- the control unit 1022 transmits the second identification information of the second device 102 when transmitting/receiving data to/from the reader/writer 104 .
- Information such as the second identification information is stored in the storage unit 1023 .
- Control unit 1012 refers to storage unit 1023 and reads out information such as the second identification information when performing radio wave transmission processing.
- the storage unit 1023 is, like the storage unit 1013, a non-volatile memory such as an electrically rewritable EEPROM.
- the storage unit 1023 is provided with a shared storage area that is a storage area accessible by the first device 101 .
- the second device 102 When the second device 102 is supplied with the setting values to be changed for the first device 101 from the reader/writer 104 , the second device 102 writes and stores the supplied setting values in the shared storage area of the storage unit 1023 .
- this shared storage area for example, an area for writing the transmission cycle, wavelength, intensity, etc. is set.
- Each of the first device 101 and the second device 102 is configured to transmit and receive data through an interface such as I2C (Inter Integrated Circuit) or SPI (Serial Peripheral Interface).
- the second device 102 When data is written to the shared area in the storage unit 1023, the second device 102 notifies the first device 101 that the setting value has been changed. As a result, the first device 101 refers to the numerical values of the transmission period, wavelength, and intensity in the shared area of the storage unit 1023, extracts data different from the transmission period, wavelength, and intensity stored in the storage unit 1013, and extracts the data. The obtained data is read out from the shared area of the storage unit 1023 . Then, the first device 101 writes and stores the data read from the shared area of the storage unit 1023 in the corresponding location (storage area for transmission cycle, wavelength, intensity, etc.) of the storage unit 1013 .
- the setting values of the first device 101 can only be changed by wire, the setting values written at the time of manufacturing and shipping cannot be easily rewritten wirelessly after distribution.
- Setting values of the first device 101 can be wirelessly rewritten through the second device 102 .
- the first device can be arbitrarily switched between the operation state and the stop state via the second device 102. can be transitioned.
- the stop state indicates a power-saving sleep mode in which radio waves are not transmitted and the operating frequency of a CPU (Central Processing Unit) inside the control unit 1012 is lowered.
- a CPU Central Processing Unit
- the control unit 1022 of the second device 102 When the operation flag of the shared area in the storage unit 1023 is rewritten, the control unit 1022 of the second device 102 notifies the first device 101 that the operating state has changed. As a result, the control unit 1012 of the first device 101 refers to the operation flag of the shared area of the storage unit 1023, compares it with the operation flag stored in the corresponding location of the storage unit 1013, and if different, sets the operation flag. is rewritten to the value of the operation flag of the shared area of the storage unit 1023 . Then, the control unit 1012 of the first device 101 changes its own operating state to either an operating state or a stopped state in accordance with the operating state indicated by the operating flag.
- FIG. 4A and 4B are conceptual diagrams showing an example of changing the setting value of the first device via the second device.
- FIG. 4A shows changes in the radio wave transmission period of the transmitting/receiving unit 1011 in the first device 101 .
- the reader/writer 104 writes 30 min (minutes), 5 min, and 1 min as numerical values (hours) of the transmission cycle in the data area of the transmission cycle in the shared area of the storage unit 1023 of the second device 102.
- One device 101 accesses the shared area of the storage unit 1023 .
- the control unit 1012 of the first device 101 changes the radio wave transmission cycle (control information) to 30 min, 5 min, 1 min, etc. read from the shared area of the storage unit 1023 .
- the reader/writer 104 transmits the numerical value of the changed setting value to the management server 105 together with the second identification information of the reader/writer 104 that has performed the writing.
- the management server 105 rewrites the first device setting value information in the corresponding record of the second identification information in the target object management table of the management database 105D.
- FIG. 4B shows the operating state of the first device 101 by rewriting the operating flag in the storage unit 1023 of the second device 102.
- FIG. 1 the reader/writer 104 rewrites the operating flag in the shared area of the storage unit 1023 of the second device 102 from the stopped state (flag is "1") to the operating state (flag is "0").
- the reader/writer 104 rewrites the operation flag in the shared area of the storage unit 1023 of the second device 102 from the operating state (flag is "0") to the stopped state (flag is "1").
- the first device 101 is in an operating state during time T2 between time T1 and time T3. Then, at time T4, the reader/writer 104 rewrites the operation flag in the shared area of the storage unit 1023 of the second device 102 from the stop state (flag is "1") to the operation state (flag is "0"). As a result, the first device 101 is in a stopped state during the period from time T3 to time T4.
- the target object 200 when the target object 200 is stored in the warehouse, the target object 200 does not move and there is no need to transmit radio waves.
- the reader/writer 104_2 when the reader/writer 104_2 is transported from the storage area 402 to the inventory area 403, the reader/writer 104_2 transmits the first identification information and the reader/writer identification information to the management server 105, and then changes from the operating state to the stopped state. Therefore, the operation flag in the storage unit 1023 of the second device 102 is rewritten from "0" to "1".
- the stopped state is changed to the operating state.
- the operation flag in the storage unit 1023 of the device 102 is rewritten from "1" to "0".
- it is possible to detect the position where the target object 200 moves such as when the target object 200 is placed on an airplane or on a ship, and even when the target object 200 does not move from that position, the power from the battery 1014 can be detected. Stopped to save power.
- the process is performed after the first identification information is received when the target object 200 passes through the loading/unloading gate at which the reader/writer 104 is installed.
- the person in charge may perform this manually at any timing using a portable reader/writer (a terminal application such as a smart phone).
- the reader/writer 104 transmits the numerical value of the changed operation flag together with the second identification information of the reader/writer 104 that has written to the management server 105 .
- the management server 105 rewrites the first device operation flag in the corresponding record of the second identification information in the target object management table of the management database 105D.
- FIG. 4C illustrates an example in which the portable reader/writer 104 causes the first device 101 to transmit radio waves at arbitrary timing regardless of the period of periodic transmission.
- the set value indicates that the radio wave is transmitted once every 30 minutes, for example. That is, the time between each of time T11, time T12, time T15, and time T16 is the period interval time, for example, 30 minutes.
- the reader/writer 104 is used to set a flag for radio wave transmission in the shared area of the storage unit 1023.
- the reader/writer 104 rewrites the interrupt transmission flag of the shared area in the storage unit 1023 of the second device 102 from "0" to "1".
- the transmission flag is set to "1" it indicates that an interrupt transmission is to be performed.
- Control unit 1022 of second device 102 notifies first device 101 that the interrupt transmission flag in the shared area in storage unit 1023 has been rewritten. Thereby, the first device 101 refers to the interrupt transmission flag in the shared area in the storage unit 1023 . Then, the control unit 1012 of the first device 101 causes the transmitting/receiving unit 1011 to transmit radio waves as interrupt transmission. Further, when the control unit 1022 of the second device 102 is notified from the first device 101 that the interrupt transmission flag of the shared area in the storage unit 1023 has been referred to, the control unit 1022 resets the interrupt transmission flag to "0".
- FIG. 5 is a flowchart showing an operation example of processing for changing setting values of the first device in the target object management system according to one embodiment of the present invention.
- the second device is configured to generate a one-time password as a password for authentication.
- a target object management method using the target object management system will be described below.
- Step S101 The reader/writer 104 transmits a control signal for transmitting the second identification information to the second device 102 together with a predetermined character string.
- the predetermined character string is obtained from the management server 105 when the reader/writer 104 rewrites the setting value of the first device and authenticates the second device 102 .
- control unit 1022 of the second device 102 reads out the second identification information from the storage unit 1023 and generates a one-time password from the character string by a predetermined calculation formula. Then, the control unit 1022 of the second device 102 transmits the second identification information and the one-time password to the reader/writer 104 via the transmission/reception unit 1021 . The reader/writer 104 receives (reads) the second identification information and the one-time password transmitted from the second device 102 .
- Step S102 The reader/writer 104 transmits the second identification information and the one-time password supplied from the second device 102 to the management server 105 to request authentication of the second device 102 .
- the management server 105 refers to the target object management table of the management database 105D and searches for the requested second identification information of the second device. Then, when the second identification information is detected in the target object management table of the management database 105D, the management server 105 determines the authenticity of the one-time password using a predetermined calculation formula and the character string transmitted by itself. Confirm.
- Step S103 When the second identification information exists in the target object management table of the management database 105D and the one-time password is true, the management server 105 determines that the authentication is correct (authentication is OK), and reads that the authentication is OK. Send to the writer 104 . Accordingly, the reader/writer 104 advances the process to step S104.
- the management server 105 determines that the authentication is not correct (authentication is not OK), and reads that the authentication is not OK. Send to the writer 104 .
- the reader/writer 104 displays a notification that the second device 102 is not a correct device on a display screen (not shown). As a result, the person in charge terminates the process without changing the setting values of the reader/writer 4 .
- Step S104 The reader/writer 104 writes and stores a set value (for example, a new numerical value of the transmission cycle) related to the operation of the first device 101 input by the person in charge in the shared area of the storage unit 1023 of the second device 102 . Then, the control unit 1022 of the second device 102 notifies the first device 101 that the setting value has been written to the shared area in the storage unit 1023 .
- a set value for example, a new numerical value of the transmission cycle
- Step S105 Also, the control unit 1022 of the second device 102 reads the second identification information of the second device 102 from the storage unit 1023 .
- the reader/writer 104 transmits the setting value (the setting value regarding the operation of the first device 101) written in the shared area in the storage unit 1023 of the second device 102 to the management server 105 together with the read second identification information.
- the management server 105 rewrites the first device setting value information in the record corresponding to the second identification information in the target object management table of the management database 105D with the received setting values.
- Step S106 When the control unit 1012 of the first device 101 receives a notification from the second device 102 indicating that the setting value has been written to the shared area of the storage unit 1023, it accesses the shared area of the storage unit 1023 and refers to it. Then, the control unit 1012 of the first device 101 reads the setting values written in the shared area of the storage unit 1023 .
- Step S107 The control unit 1012 of the first device 101 changes the setting value by overwriting the setting value read from the shared area of the storage unit 1023 in a predetermined area in the storage unit 1013 where the setting value is written.
- Step S108 the control unit 1012 of the first device 101 controls the first device 101 based on the setting values read from the predetermined area in the storage unit 1013 . For example, if the set value is the transmission cycle and the cycle width is changed from 10 minutes to 30 minutes, the control unit 1012 of the first device 101 causes the transmission/reception unit 1011 to transmit radio waves not every 10 minutes but every 30 minutes. Change behavior.
- the change of the setting value is explained in terms of the transmission cycle. different, and the frequency bands of available radio waves may differ. Therefore, when the target object 200 is carried into a country or region where the standard of the LPWA communication method is different, the position of the target object 200 is detected and the transport route tracking is started. to start or restart position detection processing by transmitting radio waves, it is also possible to change the set value of the wavelength of the radio waves to be transmitted.
- a specific procedure for changing the frequency band in the LPWA system will be described. First, the second device 102 writes a value related to the positional information with the reader/writer 104, reads the written value related to the positional information from the first device 101, and changes the setting of the communication frequency.
- the first device 101 Since the first device 101 is assumed to be a circuit (beacon) only for transmission, it does not have a reception function. As described above, according to the present embodiment, when changing the frequency band, a highly functional configuration such as a listening module is not required, so that the change can be made at low cost.
- each of the first device 101 and the second device 102 is equipped with various sensors (for example, measuring temperature, humidity, altitude, acceleration, magnetic field, chemical substance, gas concentration, etc.). sensor) may be connected to perform operation with a function of detecting the state of the environment around the target object 200 .
- the sensor measures and monitors the temperature and humidity in the environment where the target object 200 is located, and whether or not the freshness of the perishable food can be maintained. etc. can be determined.
- the second device 102 is of a passive type, the sensor itself is equipped with a battery, or power is supplied from the battery 1014 of the first device 101 .
- the transmission/reception unit 1011 receives the measured values of the measurement target (for example, temperature, humidity, altitude, acceleration, magnetic field, chemical substance, gas concentration, etc.) acquired by the control unit 1012 from the sensor connected to the first device 101.
- the first identification information may be added and transmitted to the management server 105 via the access point 103 .
- the transmitting/receiving unit 1021 of the second device 102 may add the second identification information and transmit it to the management server 105 via the reader/writer 104 .
- the measured value of the measurement target (eg, temperature, humidity, altitude, acceleration, magnetic field, chemical substance, gas concentration, etc.) acquired by the control unit 1022 from the sensor connected to the second device 102 is sent to the transmission/reception unit 1021 adds the second identification information and transmits it to the management server 105 via the reader/writer 104 , the transmitting/receiving unit 1011 of the first device 101 adds the first identification information and transmits it via the access point 103 . It may be transmitted to the management server 105 .
- the measurement target eg, temperature, humidity, altitude, acceleration, magnetic field, chemical substance, gas concentration, etc.
- the senor may be configured to detect voltage or current.
- a conductor conductive ink, conductive substance, etc.
- a conductor is configured to form a loop-shaped wiring in the unsealing portion of the package, which is the target object 200, and the wiring is broken when the package is unsealed. Since constant detection consumes a large amount of battery power, a predetermined cycle (eg, 30 minutes, 1 hour, etc.) and a predetermined time (time in which voltage and current can be measured, eg, 1 msec (second), 5 msec) , by measuring the voltage value in the wiring and the value of current flowing in the wiring, it is possible to detect whether or not the wiring has been disconnected, and to determine that the package has been opened.
- a predetermined cycle eg, 30 minutes, 1 hour, etc.
- a predetermined time time in which voltage and current can be measured, eg, 1 msec (second), 5 msec
- each of the first device 101 and the second device 102 is added to one target object 200, and in the target object management table of the management database 105D, the second device added to the target object 200 is stored.
- the information of the target object 200 can be easily obtained using only one of the identification information. can be managed to
- the first installation position for each area (plane) based on the arrangement position of the access point 103 that transmits and receives data to and from the first device 101 and data transmission and reception to and from the second device 102 are performed.
- the first identification information and the second identification information in the target object management table of the management database 105D are linked to the arrangement position of the reader/writer 104 .
- the first position information of the target object (first installation position) and the second position information of the target object (second installation position) are combined into one position information, so that the target object 200 can be detected with high accuracy.
- An existing position can be detected.
- the first device 101 when writing a setting value to a predetermined area of the storage unit 1013 of the first device 101, if the first device 101 has a configuration in which data cannot be written unless the first device 101 is wired (for example, the 1 device 101 is ZETA (registered trademark)), it is possible to change the setting value in a predetermined area of the storage unit 1013 of the first device 101 via the storage unit 1023 of the second device 102 . As a result, the operating state of the first device 101 can be changed at any timing during transportation.
- the 1 device 101 is ZETA (registered trademark)
- the operation flag of the storage unit 1013 of the first device 101 when writing information for stopping operation to the operation flag of the storage unit 1013 of the first device 101, the operation flag cannot be rewritten unless the first device 101 is wired.
- the first device 101 when the first device 101 is ZETA (registered trademark)
- This makes it possible to easily transition the first device 101 between the operating state and the stopped state at any timing during transportation, reduce the power consumption of the battery 1014, and extend the operation time.
- the term "computer system” as used herein includes hardware such as an OS (Operating System) and peripheral devices.
- the "computer system” also includes a WWW (World Wide Web) system with a homepage providing environment (or display environment).
- WWW World Wide Web
- computer-readable recording medium refers to portable media such as flexible discs, magneto-optical discs, ROM (Read Only Memory), CD-ROM (Compact Disc - Read Only Memory), etc.
- a storage device such as a hard disk.
- “computer-readable recording medium” means the volatile memory (RAM (Random Access Memory)), including recording media that hold programs for a certain period of time.
- the program may be transmitted from a computer system storing this program in a storage device or the like to another computer system via a transmission medium or by transmission waves in a transmission medium.
- the "transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
- the program may be a program for realizing part of the functions described above.
- it may be a program capable of realizing the functions described above in combination with a program already recorded in the computer system, that is, a so-called difference file (difference program).
- a target object management system capable of detecting the position (place) in which a target object exists within a communicable area of LPWA are provided.
- a target object management method capable of detecting the position (place) in which a target object exists within a communicable area of LPWA are provided.
- Target object management system 101... First device 102... Second device 103, 103_1, 103_2, 103_m... Access point 104, 104_1, 104_2, 104_3, 104_4, 104_n... Reader/writer 105... Management server 105D... Management database 200... Target object 301A, 302A, 401A Communicable range 500 Information communication network 1011, 1021 Transmitting/receiving unit 1012, 1022 Control unit 1013, 1023 Storage unit 1014 Battery
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Abstract
Description
本願は、2021年5月12日に日本に出願された特願2021-081205号について優先権を主張し、その内容をここに援用する。
特許文献1においては、通信モジュールとしてLPWA(Low Power Wide Area)の通信方式が用いられている。
そして、LPWAは伝送速度が4G回線などのセルラー回線や無線LAN(Local Area Network)と比較すると非常に遅いが、広範囲においてデータの送受信を行うことができる。
このため、少ないアクセスポイントで効率的に、かつ長い期間にわたって、対象物体の位置検出を行うことができる。
このため、電波強度による位置推定が困難であり、アクセスポイントとの通信可能エリア内に存在することは判定できるが、この通信可能エリア内のいずれの位置であるかなどの正確な位置検出を行うことができない。
しかし、アクセスポイント間に障害物がある場合、通信装置が一方のアクセスポイントとの通信が行えなくなり、他方のアクセスポイントの通信可能エリアにいることしか判定できない。
このため、通信装置を搭載した対象物体が、アクセスポイントに対していずれの方向の領域に存在するかを判定することができなくなる。
対象物体管理システム100は、第1デバイス101と、第2デバイス102と、アクセスポイント103_1~103_mと、リーダライタ104_1~104_nと、管理サーバ(対象物体管理サーバ)105とを備えている。以下、アクセスポイント103_1~103_mを総称して、アクセスポイント103と示し、リーダライタ104_1~104_nを総称して、リーダライタ104と示す場合がある。
第1デバイス101は、LPWAの通信方式による通信モジュールであり、位置検出を行う対象である対象物体200に付加される。
また、LPWAとしては、複数の方式が知られているが、何れの方式を使用してもよい。好ましくは、データの到達距離が遠くまで通信できる通信方式(数百mから~1km程度の距離)が好ましい。
本実施形態においては、第2デバイス102としてRFIDタグを用いた例を説明する。
すなわち、アクセスポイント103_1~103_mは、第1デバイス101の識別情報LPWA_ID(以下、第1識別情報)を受信した場合、管理サーバ105に対して、第1識別情報と自身の識別情報であるアクセスポイント識別情報とを送信する。
すなわち、リーダライタ104_1~104_nは、第2デバイス102の識別情報EFID_ID(以下、第2識別情報)を受信した場合、管理サーバ105に対して、第2識別情報と自身の識別情報であるリーダライタ識別情報とを送信する。
図2Bは、リーダライタの設置と、第2デバイスの通信距離範囲との対応関係を示す概念図である。
図2Aは、アクセスポイント103の設置例を示している。アクセスポイント103_1は、通信可能範囲301A(半径L1、例えば1km:第1通信範囲)の範囲で通信が可能である。
通信可能範囲301Aが建物301を含んでいることにより、アクセスポイント103_1は、第1デバイス101とのデータの送受信を行うことができた場合、第1デバイス101が建物301内、あるいは近傍に位置することを検知することができる。
通信可能範囲302Aが建物302を含んでいることにより、アクセスポイント103_2は、第1デバイス101とのデータの送受信を行うことができた場合、第1デバイス101が建物302内、あるいは近傍に位置することを検知することができる。
これにより、アクセスポイント103_1及び103_2の各々は、敷地(エリア)400内に配置された建物301(例えば、工場棟)と、建物302(例えば、倉庫)とのいずれに、第1デバイス101が位置しているかを検知する。すなわち、第1デバイス101が付加された対象物体200(例えば、工業製品)が建物301と建物302とのいずれに位置しているかをアクセスポイント103_1及び103_2の各々は検知することができる。
図2Bにおいて、例えば、リーダライタ104_1は、入荷領域401から入庫領域402に対象物体200を搬送するゲートに設けられている。また、リーダライタ104_2は、入庫領域402から在庫領域403に対象物体200を搬送するゲートに設けられている。リーダライタ104_3は、在庫領域403から出庫領域404に対象物体200を搬送するゲートに設けられている。リーダライタ104_4は、出庫領域404から出荷領域405に対象物体200を搬送するゲートに設けられている。
また、入荷領域401に対象物体を搬入するゲートにリーダライタ104_0を設けることにより、対象物体200が入荷領域401に位置することを検知できる。
このとき、管理サーバ105は、アクセスポイント103のアクセスポイント識別情報に対応した位置情報として、第1設置位置をアクセスポイント管理テーブル(不図示)を参照して読み出す。
このとき、管理サーバ105は、リーダライタ104のアクセスポイント識別情報に対応した位置情報として、第1配置情報をリーダライタ管理テーブル(不図示)を参照して読み出す。
すなわち、管理サーバ105は、利用者の端末から利用者の利用者識別情報が供給された場合、管理データベース105Dにおける利用者識別情報に対応する対象物体管理テーブルへのアクセスを利用者に許可する。
管理サーバ105は、利用者の端末から、第1識別情報あるいは第2識別情報のいずれかの識別情報が供給された場合、管理データベース105Dにおける対象物体管理テーブルにおける上記識別情報に対応するレコードの情報を、利用者の端末に送信する。
また、利用者は、端末及び管理サーバ105を介して、管理データベース105Dにおける対象物体管理テーブルから、第1デバイス101の設定値の情報である第1デバイス設定値情報と、第1デバイス稼働フラグとを取得することもできる。
この対象物体管理テーブルは、企業や団体などの利用者毎に設けられており、利用者の利用者識別情報により管理されており、他の利用者は参照できない構成である。
対象物体管理テーブルは、レコード毎に、第1識別情報、第2識別情報、対象物体情報、対象物体第1位置情報、対象物体第2位置情報、第1デバイス設定値情報及び第1デバイス稼働フラグの各々の欄が設けられている。
第2識別情報は、第2デバイス102であるRFIDタグの識別情報である。
対象物体情報は、対象物体200の種類などを示す情報であり、例えば家電製品、家具、海産物、農産物、郵送物などの搬送により移動を伴う物体の名称あるいはカテゴリである。
対象物体第2位置情報は、管理サーバ105がリーダライタ104のリーダライタ識別情報により取得した第2配置情報であり、リーダライタ104が配置されている搬入ゲート、搬出ゲート、部屋(何階の何号室)の入り口などの所定の箇所を示す位置情報である。
第1デバイス稼働フラグは、第1デバイス101が稼働しているか、停止(スリープモード)しているかを示すフラグであり、例えばフラグが「1」である場合(フラグが立っている場合)に停止を示し、フラグが「0」である場合(フラグがたっていない場合)に稼働していることを示している。
このため、利用者が第1デバイス101及び第2デバイス102の各々のいずれか一方の識別情報しか認識していなくても、第1デバイス101及び第2デバイス102が組として付加されている対象物体200の管理情報を、対象物体管理テーブルにおいて参照することが可能である。
このため、対象物体第1設置位置が横浜にある第1倉庫(位置における領域)を示し、対象物体第2設置位置が在庫領域の搬入ゲート(位置における箇所)を示している場合、この対象物体第1設置位置及び対象物体第2設置位置の各々を組み合わせて、横浜の第1倉庫の在庫領域に対象物体200が位置していることが検知することができる。
制御部1012は、第1デバイス101の第1識別情報をアクセスポイント103に対して、所定の発信周期で、所定の波長及び所定の強度の電波により送受信部1011を介して送信する。
バッテリ1014は、第1デバイス101及び後述する記憶部1023の共有領域の各々を駆動する際に必要な電力を供給する。
制御部1022は、第2デバイス102の第2識別情報をリーダライタ104とのデータの送受信において送信する。
記憶部1023には、上記第2識別情報などの情報が記憶されている。制御部1012は、電波の発信処理を行う場合、第2識別情報などの情報を、記憶部1023を参照して読み出す。記憶部1023は、記憶部1013と同様に、例えば、電気的なデータの書換が可能なEEPROMなどの不揮発性メモリである。
第2デバイス102は、リーダライタ104から、第1デバイス101の変更する設定値が供給された場合、記憶部1023の上記共有記憶領域に供給された設定値を書き込んで記憶させる。この共有記憶領域には、例えば、発信周期、波長、強度などを書き込む領域が設定されている。
第1デバイス101と第2デバイス102との各々は、例えば、I2C(Inter Integrated Circuit)あるいはSPI(Serial Peripheral Interface)などのインターフェースによりデータの送受信を行う構成である。
これにより、第1デバイス101は、記憶部1023の共有領域の発信周期、波長、強度の数値を参照し、記憶部1013に記憶されている発信周期、波長、強度と異なるデータを抽出し、抽出したデータを記憶部1023の共有領域から読み出す。
そして、第1デバイス101は、記憶部1023の共有領域から読み出したデータを、記憶部1013の該当箇所(発信周期、波長、強度などの記憶領域)に書き込んで記憶させる。
また、記憶部1023における共有領域に稼働停止を行うか否かを示す稼働フラグを備えることにより、第2デバイス102を介して第1デバイスを稼働状態と停止状態との動作状態の間を任意に遷移させることができる。ここで、停止状態とは、電波の発信を行わずに、かつ制御部1012内部のCPU(Central Processing Unit)の動作周波数を低下させるなどの省電力となるスリープモードを示している。
これにより、第1デバイス101の制御部1012は、記憶部1023の共有領域の稼働フラグを参照し、記憶部1013の該当箇所に記憶されている稼働フラグと比較し、異なっている場合に稼働フラグを、記憶部1023の共有領域の稼働フラグの値に書き換える。
そして、第1デバイス101の制御部1012は、稼働フラグの示す動作状態に対応させて、自身の動作状態を稼働状態と停止状態とのいずれかに遷移させる。
図4Aは、第1デバイス101における送受信部1011の電波の発信周期の変更を示している。
図4Aにおいて、リーダライタ104により、第2デバイス102の記憶部1023の共有領域における発信周期のデータ領域において、発信周期の数値(時間)として30min(分)、5min、1minを書き込むことにより、第1デバイス101が記憶部1023の共有領域をアクセスする。
ここで、リーダライタ104は、設定値を変更した際、変更した設定値の数値を、管理サーバ105に対して書き込みを行わせたリーダライタ104の第2識別情報とともに送信する。
これにより、管理サーバ105は、管理データベース105Dの対象物体管理テーブルにおいて、対応する第2識別情報のレコードにおける第1デバイス設定値情報の書き換えを行う。
時刻T1において、リーダライタ104により、第2デバイス102の記憶部1023の共有領域における稼働フラグを、停止状態(フラグが「1」)から稼働状態(フラグが「0」)に書き換える。
また、時刻T3において、リーダライタ104により、第2デバイス102の記憶部1023の共有領域における稼働フラグを、稼働状態(フラグが「0」)から停止状態(フラグが「1」)に書き換える。
そして、時刻T4において、リーダライタ104により、第2デバイス102の記憶部1023の共有領域における稼働フラグを、停止状態(フラグが「1」)から稼働状態(フラグが「0」)に書き換える。
これにより、時刻T3から時刻T4までの間の時間において、第1デバイス101は、停止状態となる。
例えば、図2Bにおいて、入庫領域402から在庫領域403に搬送される際、リーダライタ104_2が、第1識別情報とリーダライタ識別情報とを管理サーバ105に送信した後、稼働状態から停止状態とするため、第2デバイス102の記憶部1023における稼働フラグを、「0」から「1」に書き換えを行う。
また、飛行機に乗せた、船に乗せたなど、他に対象物体200の移動する位置を検知することができ、対象物体200がその位置から移動することが無い場合にも、バッテリ1014からの電力消費を抑えるため、停止状態とする。
しかしながら、担当者が携帯型のリーダライタ(スマートフォンなどの端末のアプリケーション)により、手動により任意のタイミングで行ってもよい。
ここで、リーダライタ104は、稼働フラグを変更した際、変更した稼働フラグの数値を、管理サーバ105に対して書き込みを行わせたリーダライタ104の第2識別情報とともに送信する。
これにより、管理サーバ105は、管理データベース105Dの対象物体管理テーブルにおいて、対応する第2識別情報のレコードにおける第1デバイス稼働フラグの書き換えを行う。
時刻T11、時刻T12、時刻T15及び時刻T16の各々においては、設定値として例えば30min毎に、一回の電波の発信を行っていることを示している。すなわち、時刻T11、時刻T12、時刻T15及び時刻T16の各々の間の時間は、周期の間隔の時間であり、例えば30minである。
このとき、リーダライタ104は、第2デバイス102の記憶部1023における共有領域の割り込み発信フラグを、「0」から「1」に書き換える。発信フラグを「1」とした場合、割り込み発信を行うことを示している。
これにより、第1デバイス101は、記憶部1023における共有領域の割り込み発信フラグを参照する。
そして、第1デバイス101の制御部1012は、割り込み発信として送受信部1011により電波を発信する。
また、第2デバイス102の制御部1022は、記憶部1023における共有領域の割り込み発信フラグを参照したことを、第1デバイス101から通知された場合、割り込み発信フラグを「0」にリセットする。
ステップS101:
リーダライタ104は、第2デバイス102に対して第2識別情報を送信する制御信号を所定の文字列とともに送信する。
上記所定の文字列は、リーダライタ104が第1デバイスの設定値を書き換える際、第2デバイス102の認証を行う際、管理サーバ105から取得する。
そして、第2デバイス102の制御部1022は、第2識別情報及びワンタイムパスワードを、送受信部1021を介してリーダライタ104に対して送信する。
リーダライタ104は、第2デバイス102から送信された第2識別情報及びワンタイムパスワードを受信する(読み込む)。
リーダライタ104は、第2デバイス102から供給された第2識別情報及びワンタイムパスワードを、管理サーバ105に送信して、第2デバイス102の認証を依頼する。
管理サーバ105は、管理データベース105Dの対象物体管理テーブルを参照し、依頼された第2デバイスの第2識別情報を検索する。
そして、管理サーバ105は、管理データベース105Dの対象物体管理テーブルにおいて、第2識別情報が検出された場合、ワンタイムパスワードの真偽を、所定の計算式と自身の送信した文字列とを用いて確認する。
管理サーバ105は、管理データベース105Dの対象物体管理テーブルに第2識別情報が存在し、かつワンタイムパスワードが真の場合、正しく認証された(認証OKである)として、認証OKであることをリーダライタ104に対して送信する。
これにより、リーダライタ104は、処理をステップS104へ進める。
リーダライタ104は、表示画面(不図示)に、第2デバイス102が正しいデバイスではないとする通知を表示する。
これにより、担当者は、リーダライタ4による設定値の変更を行わず、処理を終了する。
リーダライタ104は、担当者の入力する第1デバイス101の動作に関する設定値(例えば、新たな発信周期の数値)を、第2デバイス102の記憶部1023における共有領域に書き込んで記憶させる。
そして、第2デバイス102の制御部1022は、記憶部1023における共有領域に設定値が書き込まれたことを、第1デバイス101に対して通知する。
また、第2デバイス102の制御部1022は、記憶部1023から第2デバイス102の第2識別情報を読み出す。
リーダライタ104は、第2デバイス102の記憶部1023における共有領域に書き込んだ設定値(第1デバイス101の動作に関する設定値)を、読み出した第2識別情報とともに管理サーバ105に対して送信する。
これにより、管理サーバ105は、管理データベース105Dの対象物体管理テーブルにおいて、第2識別情報に対応するレコードにおける第1デバイス設定値情報を、受信した設定値により書き換える。
第1デバイス101の制御部1012は、第2デバイス102から記憶部1023における共有領域に設定値が書き込まれたことを示す通知を受信した場合、記憶部1023の共有領域をアクセスして参照する。
そして、第1デバイス101の制御部1012は、記憶部1023の共有領域に書き込まれた設定値を読み出す。
第1デバイス101の制御部1012は、記憶部1023の共有領域から読み出した設定値を、記憶部1013における設定値が書き込まれている所定の領域に上書きすることにより、設定値の変更を行う。
そして、第1デバイス101の制御部1012は、記憶部1013における上記所定の領域から読み出した設定値により、第1デバイス101の制御を行う。
例えば、設定値が発信周期であり、周期幅が10minから30minに変更された場合、第1デバイス101の制御部1012は、送受信部1011から10min毎ではなく、30min毎に電波を発信するように動作を変更する。
このため、LPWA通信方式における規格が異なる国あるいは地域に対象物体200を搬入する際、対象物体200の位置検出を行い、搬送経路の追跡を開始するため、稼働フラグを「1」から「0」に遷移させて、電波を発信して位置検出の処理を開始、あるいは再開する場合、発信する電波の波長の設定値を変更することもできる。
LPWA方式における周波数帯域を変更するときの具体的な手順を説明する。
まず、第2デバイス102が、リーダライタ104で位置情報に関する値を書込み、書き込まれた位置情報に関する値を第1デバイス101から読み込み、通信周波数の設定を変更する。
なお、第1デバイス101は発信のみの回路(ビーコン)を想定しているため、受信機能はない。
以上より、本実施形態では、周波数帯域を変更する際、リスニングモジュールのような高機能な構成が必要ではないため、安価に対応することが可能である。
例えば、対象物体200が生鮮食料品が包装された包装物であれば、対象物体200が位置する環境における温度や湿度をセンサーにより計測してモニタし、生鮮食料品の鮮度を保持できるか否かなどを判定することができる。
第2デバイス102は、パッシブ方式であるため、センサー自体がバッテリを搭載しているか、第1デバイス101のバッテリ1014から電力が供給される構成とする。
そして、常時検出を行うとバッテリの電力の消費が大きいため、所定の周期(例えば、30分、1時間など)かつ所定の時間(電圧や電流が計測できる時間、例えば1msec(秒)、5msec)において、配線における電圧値や配線に流れる電流値を計測することにより、配線が断線したか否かの検出を行い、包装物が開封されたと判定することができる。
101…第1デバイス
102…第2デバイス
103,103_1,103_2,103_m…アクセスポイント
104,104_1,104_2,104_3,104_4,104_n…リーダライタ
105…管理サーバ
105D…管理データベース
200…対象物体
301A,302A,401A…通信可能範囲
500…情報通信網
1011,1021…送受信部
1012,1022…制御部
1013,1023…記憶部
1014…バッテリ
Claims (7)
- 対象物体に付加され、LPWA(Low Power Wide Area)の通信方式により、所定の第1通信範囲におけるアクセスポイントとのデータの送受信を行う第1デバイスと、
前記対象物体に付加され、LPWAと異なる通信方式により、前記第1デバイスの前記第1通信範囲より狭い第2通信範囲における所定の端末とのデータの送受信を行う第2デバイスと、
前記アクセスポイントが設置された第1設置位置と、前記端末が設置された第2設置位置とから、前記対象物体の位置を検出する管理サーバと
を備え、
前記管理サーバが前記第1デバイスを識別する第1識別情報と、前記第2デバイスを識別する第2識別情報とを対応付けて管理している
対象物体管理システム。 - 前記第2デバイスがRFID(Radio Frequency Identification)であり、前記端末がリーダライタである
請求項1に記載の対象物体管理システム。 - 前記アクセスポイントは、検出したいエリアの各々に配置され、前記端末は、前記エリア内における検出したい箇所に配置されている
請求項1または請求項2に記載の対象物体管理システム。 - 前記第1デバイスが前記第2デバイスの記憶部をアクセスすることが可能であり、
前記第2デバイスの前記記憶部に、前記第1デバイスに対する制御情報を書き込んで記憶させ、
前記第1デバイスが前記記憶部から前記制御情報を読み込み、前記第1デバイスの稼働状態を変更する
請求項1または請求項2に記載の対象物体管理システム。 - 前記第1デバイスが前記第2デバイスの記憶部をアクセスすることが可能であり、
前記第2デバイスの前記記憶部に、前記第1デバイスに対する制御情報を書き込んで記憶させ、
前記第1デバイスが前記記憶部から前記制御情報を読み込み、前記第1デバイスの稼働状態を変更する
請求項3に記載の対象物体管理システム。 - 第1デバイス及び第2デバイスが対象物体に付加され、
LPWA(Low Power Wide Area)の通信方式により、所定の第1通信範囲における前記第1デバイスとデータの送受信を行うアクセスポイントが、LPWAと異なる通信方式により、前記第1デバイスの前記第1通信範囲より狭い第2通信範囲における前記第2デバイスとのデータの送受信を行う端末と情報通信網により接続される対象物体管理サーバであり、
前記第1デバイスを識別する第1識別情報と、前記第2デバイスを識別する第2識別情報とを対応付けて管理し、前記アクセスポイントが設置された第1設置位置と、前記端末が設置された第2設置位置とから、前記対象物体の位置を検出する
対象物体管理サーバ。 - 第1デバイスが、対象物体に付加され、LPWAの通信方式により、所定の第1通信範囲におけるアクセスポイントとのデータの送受信を行う過程と、
第2デバイスが、前記対象物体に付加され、LPWAと異なる通信方式により、前記第1デバイスの前記第1通信範囲より狭い第2通信範囲における所定の端末とのデータの送受信を行う過程と、
管理サーバが、前記アクセスポイントが設置された第1設置位置と、前記端末が設置された第2設置位置とから、前記対象物体の位置を検出する過程と、
前記管理サーバが、前記第1デバイスを識別する第1識別情報と、前記第2デバイスを識別する第2識別情報とを対応付けて管理する過程と
を含む対象物体管理方法。
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US20200275635A1 (en) * | 2017-09-26 | 2020-09-03 | Boehringer Ingelheim Animal Health USA Inc. | Method and system for tracking animals and alerting animal owners of lost animals |
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