WO2016016986A1 - タグ検出プログラム、備品点検装置および備品点検方法 - Google Patents
タグ検出プログラム、備品点検装置および備品点検方法 Download PDFInfo
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- WO2016016986A1 WO2016016986A1 PCT/JP2014/070169 JP2014070169W WO2016016986A1 WO 2016016986 A1 WO2016016986 A1 WO 2016016986A1 JP 2014070169 W JP2014070169 W JP 2014070169W WO 2016016986 A1 WO2016016986 A1 WO 2016016986A1
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- 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
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10118—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the sensing being preceded by at least one preliminary step
- G06K7/10128—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the sensing being preceded by at least one preliminary step the step consisting of detection of the presence of one or more record carriers in the vicinity of the interrogation device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/20—Administration of product repair or maintenance
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- 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
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- 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
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
Definitions
- the present invention relates to a tag detection program, an equipment inspection device, and an equipment inspection method.
- a fixture inspection method is known in which an RFID (Radio ⁇ Frequency IDentification) tag is attached to fixtures to check for the presence of fixtures that must be in place (see, for example, Patent Document 1).
- RFID Radio ⁇ Frequency IDentification
- Such fixtures are installed at predetermined positions with RFID tags attached in advance, respectively, and RFID tags are searched for during inspection work before takeoff.
- the search for the RFID tag is performed using a reader / writer device provided in a portable terminal device such as an HHT (handheld terminal).
- FIG. 12 is an explanatory diagram for explaining a general tag detection sequence by the reader / writer device.
- this explanatory diagram in order to simplify the description of the tag detection operation, descriptions of command parameters, an arbitration state for avoiding a plurality of RFID tags from reacting simultaneously, and the like are omitted.
- the RFID tag When the reader / writer device is activated and the carrier is turned on, the RFID tag within the range in which the radio wave reaches is supplied with power by the radio wave and enters a standby state. At this time, the inventory completed flag included in the tag is in an “undetected” state, which is its initial value.
- the reader / writer device issues a Select command that specifies the type of equipment to be searched with parameters.
- the RFID tag for each product type specified by the parameter is validated.
- the reader / writer device issues a Query command, and the RFID tag that has received this Query command transits from the standby state to the response state, and creates and transmits a random number message (RN16) that identifies the RFID tag itself.
- R16 random number message
- the reader / writer device transmits an ACK (ACKnowledgement) command including the random number message.
- ACK acknowledgement
- the RFID tag transitions from the response state to the approval state.
- the RFID tag transmits an EPC (Electronic Product Code) that is a unique identifier, and sets the inventory completed flag to “detected”.
- the reader / writer device When the reader / writer device receives the EPC, the reader / writer device confirms the existence of the RFID tag having the EPC, and “detects” the tag information of the corresponding RFID tag in the search table in which the tag information of the RFID tag to be searched is recorded. Set to finished. Thereby, it is confirmed that the equipment with the RFID tag set to “detected” is correctly installed.
- the reader / writer device since the RFID tag that has transmitted the EPC has the inventoried flag set to “detected”, the reader / writer device does not react even if it repeatedly issues the Query command. When the detected RFID tag does not react, the reader / writer device is prevented from reading the detected RFID tag twice, and the search process can be simplified. As a result, the equipment in the passenger cabin can be checked efficiently and at high speed.
- the present invention has been made in view of the above points, and a tag detection program, equipment inspection device, and equipment that can react even when an RFID tag having a double reading prevention function does not respond after responding
- the purpose is to provide an inspection method.
- the present invention provides a tag detection program for an RFID tag that can prevent reading twice after reacting in response to a search by a reader / writer device and not responding to a subsequent search.
- the tag detection program searches the computer for an RFID tag, compares the RFID tag that has responded in response to the search with the tag information in the search table in which the tag information of the RFID tag to be searched is recorded, If there is an undetected RFID tag that should have responded from a comparison between the RFID tag that has reacted and the tag information, an attempt is made to return to a state that responds to the search by searching for the undetected RFID tag. To search for undetected RFID tags.
- the present invention provides an equipment inspection device for inspecting that equipment with an RFID tag attached to which a flag is changed from a non-detected state to a detected state by a search and is prevented from being read twice is provided at a predetermined position.
- This equipment inspection device stores a search table acquisition unit that downloads a search table that records the correspondence between equipment and tag information of an RFID tag attached to the equipment from the server, and a search table acquired by the search table acquisition unit.
- Comparison of search table storage unit, tag search unit for searching for RFID tags, and comparison of RFID tags that have responded due to the flag being changed to a detection state by search and tag information in the search table to check for the presence of equipment When there is an undetected RFID tag that should have responded by comparison between the processing unit and the comparison processing unit, an attempt is made to return the flag to the undetected state by searching for the tag search unit specifying the undetected RFID tag. And a re-search processing unit that instructs to search for undetected RFID tags.
- the tag search device downloads a search table that records the correspondence between equipment and tag information of the RFID tag attached to the equipment from the server, searches the RFID tag attached to the equipment, and performs a search. Compares the RFID tag that has responded with the flag transitioned to the detection state with the tag information in the search table, and if there is an undetected RFID tag that should have responded by comparison, specify the undetected RFID tag. An attempt is made to return the flag to the undetected state by searching, and an undetected RFID tag is searched.
- the equipment inspection device, and the equipment inspection method when there is an undetected RFID tag that should be detected from the search table in the detection of the RFID tag having the double reading prevention function, the reading is performed twice. The prevention function was canceled and the search was performed again. As a result, it is possible to detect an undetected RFID tag that is present but cannot be detected due to a communication error or the like.
- the tag detection program, equipment inspection device, and equipment inspection method configured as described above can cancel the double-read prevention function for undetected RFID tags that should be detected. There is an advantage of being able to do it.
- FIG. 1 is a functional block diagram of the equipment inspection apparatus according to the first embodiment.
- the equipment inspection device 1 includes a search table acquisition unit 2, a search table storage unit 3, a tag search unit 4, a comparison processing unit 5, and a re-search processing unit 6.
- the RFID tag 7 attached to each equipment includes an identifier 8 and a flag 9.
- the flag 9 has a value that can be reversed from undetected to detected when the equipment inspection device 1 responds to a search. .
- the search table acquisition unit 2 of the equipment inspection device 1 acquires a tag information search table describing a list (inventory) of RFID tags 7 attached to the equipment, and the search table is, for example, Downloaded from the server.
- the search table storage unit 3 stores the acquired search table when the search table acquisition unit 2 acquires the search table.
- the tag search unit 4 searches the RFID tag 7 by communicating with the RFID tag 7 wirelessly.
- the comparison processing unit 5 compares the RFID tag that has responded to the search by the tag search unit 4 with the tag information in the search table, determines whether the equipment is installed according to the tag information, and Perform the inspection.
- the comparison processing unit 5 sets “searched” in the search table for the RFID tag that has responded.
- the re-search processing unit 6 excludes the RFID tags that have responded by the search of the RFID tag 7 by the tag search unit 4 from the search table by the comparison processing unit 5 so that undetected RFID tags remain in the search table. Operates depending on whether or not. That is, the re-search processing unit 6 does nothing when there is no undetected RFID tag in the search table. On the other hand, when an undetected RFID tag remains in the search table, the re-search processing unit 6 returns the flag 9 to an undetected state by searching the tag search unit 4 specifying an undetected RFID tag. Instructs to search for undetected RFID tags after an attempt.
- the comparison processing unit 5 can know the undetected RFID tag that should have responded by the comparison process, and can know the identifier of the undetected RFID tag from the tag information of the search table.
- the tag search unit 4 notified of the undetected RFID tag and its identifier forcibly changes the detected tag to undetected by directly specifying and accessing the undetected RFID tag.
- the tag search unit 4 can detect the RFID tag 7 that has not been detected.
- the RFID tag search device can be a portable terminal device having the function of a reader / writer device. By bringing the portable terminal device and traveling around the cabin, the inspection of the equipment is realized in a non-contact manner.
- the RFID tag is attached to each piece of equipment installed in the guest room in advance. Further, it is assumed that detailed information regarding the RFID tags attached to the fixtures and fixtures is stored in the server.
- FIG. 2 is a conceptual diagram showing an example of the configuration of the equipment inspection system according to the second embodiment
- FIG. 3 is a conceptual diagram showing an example of an RFID search table stored in the server
- FIG. 4 is stored in the server. It is a conceptual diagram which shows an example of the in-flight map information which shows the equipment of the passenger aircraft which exists.
- the equipment inspection system 10 includes a server 20 and an RFID tag search device 30 as shown in FIG.
- the server 20 is configured by a computer system and includes a CPU (Central Processing Unit) 21 that functions as a central processing unit.
- the CPU 21 is connected to a memory 22, an external storage device 23, and a communication device 24.
- the memory 22 is used as a main memory, and temporarily stores an OS (Operating System) executed by the CPU 21, an application program, data used when the application program is executed, and the like.
- OS Operating System
- the external storage device 23 stores an RFID search table 23a and in-flight map information 23b in addition to the OS and application programs.
- the RFID search table 23a and the in-flight map information 23b are prepared in advance for each model or aircraft of the passenger aircraft.
- the communication device 24 is used when performing information communication with the RFID tag search device 30 wirelessly, and has a wireless information communication function.
- the RFID tag search device 30 is a so-called inspection terminal (handheld terminal: HHT), which is a portable terminal device constituted by a small computer system.
- the RFID tag search device 30 may be a dedicated HHT, or a tablet terminal with a built-in general-purpose communication function may function as an HHT by software.
- the RFID tag search device 30 includes a CPU 31, and a memory 32, a reader / writer device 33, a communication device 34, a display device 35, and an input device 36 are connected to the CPU 31, respectively.
- the CPU 31 controls the entire RFID tag search device 30 and executes a part of the OS program and an application program for searching RFID tags that are expanded in the main storage area of the memory 32.
- the memory 32 includes a memory used as a main memory and a nonvolatile memory such as a flash memory.
- the memory as the main memory temporarily stores an OS executed by the CPU 31 and an RFID tag search application program, an RFID search table 23a and in-flight map information 23b downloaded from the server 20, and data used when the application program is executed.
- the nonvolatile memory stores an OS, an application program for searching RFID tags, and the like.
- the reader / writer device 33 exchanges information with the RFID tags 40a-40n attached to the equipment to be inspected by short-range wireless communication in the UHF (Ultra High Frequency) band, thereby enabling the RFID tags 40a-40n. Process to recognize.
- UHF Ultra High Frequency
- the communication device 34 communicates information with the communication device 24 of the server 20.
- the display device 35 can display the in-flight map information 23b, various types of information including a tag search error, or unsearched / searched sections to an operator who possesses the RFID tag search device 30.
- the input device 36 is used for an operator to input an instruction such as a tag search start to the RFID tag search device 30.
- an instruction such as a tag search start to the RFID tag search device 30.
- the input device 36 can also be implemented as an icon arranged on the touch panel.
- the processing function of the RFID tag search application program stored in the memory 32 can be realized by a computer centered on the CPU 31.
- the RFID search table 23a stored in the server 20 is No. , Equipment name, identifier (equipment type + serial number), equipment type (RFID detection filter), RFID position, detected flag, necessity of visual confirmation and remarks.
- the RFID position column indicates where the equipment is installed in the in-flight map information 23b shown in FIG. 4, and includes the X, Y coordinates, position classification, and location columns of the in-flight map information 23b. ing.
- the in-flight map information 23b is image information of a guest room to be searched, and indicates the positions of the seat 23b1, the utility area 23b2, and the passage 23b3 by X and Y coordinates.
- the in-flight map information 23b is divided into a plurality of position sections 23b4 (areas indicated by [001]-[017] in FIG. 4). This position section 23b4 is set on the basis of a range in which the RFID tag search device 30 can reliably communicate with the RFID tags 40a-40n when the operator stops his / her foot on the passage or walks into the space in front of the seat. ing.
- FIG. 5 is a diagram showing an example of the memory contents of the RFID tag.
- the RFID tags 40a-40n have EPC as their identifiers.
- the EPC includes, for example, the EPC length, manufacturer code, filter value, serial number. And product no. have.
- the filter value means a product type used when searching for a specific type of product, and corresponds to a product type (RFID detection filter) defined in the RFID search table 23a.
- the RFID tags 40a-40n have four different functions (numbers S0, S1, S2, S3) used for wireless communication with the reader / writer device 33 of the RFID tag search device 30. It has one independent inventoried flag. In a command sequence exchange called one inventory round, only one of the four sessions functions. The invented flag can take two values, A and B. The value of A indicates that the reader / writer device 33 has not responded to the tag search, and the value of B responds to the tag search. Represents the detected state when reacting.
- FIG. 6 is a diagram illustrating an example of a tag detection sequence.
- this tag detection sequence a case where tag detection is performed on two RFID tags 40a and 40b is shown as an example in order to simplify the description.
- the EPC of the RFID tag 40a is “A001”
- the EPC of the RFID tag 40b is “A002”.
- “A” of EPC indicates the life vest by the type of equipment.
- “001” and “002” that follow the product type are serial numbers. Is shown.
- the RFID search table 23a is downloaded from the server 20, and all tag information of the RFID tags 40a-40n attached to the equipment in the passenger plane is acquired.
- the reader / writer device 33 turns on the carrier.
- radio waves are emitted from the reader / writer device 33, and the RFID tags 40a and 40b that are within the reach of the radio waves enter a standby state.
- the inventoried flag included in the RFID tags 40a and 40b is “A” in the “undetected” state, which is an initial value thereof.
- the reader / writer device 33 issues a Select command in which the type of equipment to be searched is specified as a parameter.
- “life best” for each type of product is designated as a parameter as a parameter.
- the reader / writer device 33 issues a Query command by designating a session to be used in wireless communication.
- the session with the session number S3 is designated.
- the RFID tags 40a and 40b that have received this Query command transition to an arbitration state for preventing collision. That is, the RFID tags 40a and 40b generate a random number and set the random number in the slot counter.
- the reader / writer device 33 repeatedly issues a QueryRep command.
- the RFID tags 40a and 40b decrement (-1) the slot counter.
- the RFID tag 40b transits to the response state, and a 16-bit random number message (RN16) for identifying the tag itself. And this RN 16 is responded.
- the reader / writer device 33 that has received the RN 16 transmits an ACK command including the RN 16.
- the RFID tag 40b receives the ACK command
- the occupation of the session in S3 is approved, and the RFID tag 40b transitions from the response state to the approval state.
- the RFID tag 40b transmits an EPC that is an identifier, and sets the inventoried flag of the session of S3 to “detected”.
- the RFID tag 40b in the approval state receives the QueryRep command, it transitions to the standby state, but the inventoried flag remains “detected” and does not respond to the reader / writer device 33.
- the RFID tag 40a whose EPC transmission has not been completed and the EPC is “A001” receives the QueryRep command, and after the slot counter reaches 0, the same operation as described above for the RFID tag 40a is performed. To do.
- the reader / writer device 33 recognizes from the RFID search table 23a that there are two RFID tags 40a and 40b whose EPCs are “A001” and “A002” as RFID tags to be searched. Therefore, as shown in FIG. 6, even if the EPC transmitted from the RFID tag 40b cannot be normally received due to a communication error or the like, the reader / writer device 33 has the unreceived RFID tag 40b. You can know what to do. That is, the reader / writer device 33 can identify the RFID tag 40b that should be present by comparing the tag information that has received the EPC with the tag information of the RFID search table 23a.
- the RFID tag 40b since the RFID tag 40b has the inventory completed flag set to “detected”, it does not respond to the QueryRep command from the reader / writer device 33. In such a case, the reader / writer device 33 forcibly sets the inventoried flag set to “detected” to “not detected”.
- the RFID tag 40b that has not received the EPC is known from the RFID search table 23a, the RFID tag 40b is directly designated and accessed.
- the Select command is used, and as parameters, EPC is specified for the filter, “S3” of the session is specified for Target, and “A” meaning “not detected” is specified for Action. is doing.
- the inventoried flag that was set to “detected” in the session of S3 is forcibly set to “not detected”.
- the reader / writer device 33 can find the tag that has failed in the search by executing the same sequence as that in the inventory round 1 for the RFID tag that has not received the EPC. become.
- the RFID tag 40b that has failed to be searched may not be found.
- the equipment is equipped, but the RFID tag attached to the equipment is out of order. In such a case, the equipment may be inspected visually by the operator.
- the inventoried flag is forcibly set to “not detected”.
- the present invention is not limited to this. For example, when searching for an RFID tag that has not been detected, a session with a number different from the number of the session used for the previous inventory round 1 is used, and the inventoried flag for that session is “not detected”. You may take advantage of something.
- FIG. 7 is a flowchart showing the startup process
- FIG. 8 is a flowchart showing the tag search process
- FIG. 9 is a flowchart showing the position category calculation process
- FIG. 10 is a flowchart showing the all-equipment search process in the position category
- FIG. It is a figure which shows the example of a table.
- the CPU 31 downloads the RFID search table 23a and the in-flight map information 23b from the server 20 using the communication device 34 (step S11). ).
- the RFID search table 23 a and the in-flight map information 23 b downloaded from the server 20 are stored in the memory 32, and the in-flight map information 23 b is displayed on the display device 35.
- the CPU 31 activates the reader / writer device 33 and searches for the RFID tags 40a-40n (step S12).
- the CPU 31 first calculates a position classification indicating where the operator carrying the RFID tag search device 30 is located in the aircraft. (Step S21).
- the CPU 31 searches for all the equipment installed in the calculated position category (step S22). Next, the CPU 31 determines whether or not the search for all position sections in the aircraft has been completed (step S23). If the search for all the position sections in the aircraft has not been completed yet, the CPU 31 returns to step S21, and if the search for all the position sections in the aircraft has been completed, this tag search processing is terminated.
- step S21 for calculating the position classification will be described.
- the CPU 31 sets the type of equipment to be searched first (step S31).
- the equipment type can be set for each equipment type defined in the RFID search table 23a, but a predetermined value set in advance is set here.
- the CPU 31 performs a tag search by designating the set equipment type (step S32).
- the tag search is performed using the Select command in which “life best” is specified as the parameter filter.
- the CPU 31 determines whether or not the RFID tag attached to the set equipment for each equipment type is detected within a predetermined time (step S33). Whether or not this RFID tag is detected is determined by whether or not an EPC has been received. At this time, the CPU 31 sets the detected flag of the detected RFID tag to the RFID search table 23a to “detected”.
- the CPU 31 refers to the RFID search table 23a based on the received EPC, obtains the RFID position where the detected RFID tag is installed, and calculates the position classification from the RFID position ( Step S34).
- step S33 the CPU 31 detects the RFID tag attached to the other equipment type. That is, the CPU 31 determines whether or not all of the equipment types have been searched (step S35). If there is an equipment type that has not been searched, another equipment type is set (step S36), and the process of step S32 is performed. Return to. When it is determined in step S35 that all the product types have been searched, the CPU 31 determines that it is not within the position category set by the operator, and displays a message prompting the display device 35 to move to another position. Waiting for a predetermined time (step S37), the process returns to step S31.
- the CPU 31 sets the type of equipment (step S41). For this setting, a predetermined value set in advance may be set, or any of the product types specified in the RFID search table 23a may be acquired and set.
- step S43 the CPU 31 determines whether or not the search for all the product types has been completed.
- the corresponding position section of the in-flight map information 23b displayed on the display device 35 is changed to the inspected color (step S44).
- step S44 the process proceeds to step S23.
- the change of the color of the position section is performed by arranging a graphic of a specific color so as to overlap the corresponding position section of the in-flight map information 23b.
- step S43 when the search for all the product types is not completed, the CPU 31 performs a search by designating the set product type (step S45), and whether there is an RFID tag detected within a predetermined time. Is determined (step S46). If the RFID tag is not detected within the predetermined time in step S46, another equipment type is set (step S47), and the process returns to step S43.
- step S46 the CPU 31 sets the detected flags of all the newly detected RFID tags in the RFID search table 23a to “detected” (step S46). S48). Next, the CPU 31 refers to the RFID search table 23a and compares it with an RFID tag existing in the same position section (step S49).
- the CPU 31 determines whether or not there is an undetected tag that should exist in the same position category (step S50). If there is no undetected tag, another equipment type is set (step S51). The process returns to S43.
- step S50 When it is determined in step S50 that there is an undetected tag, the CPU 31 increments the value of the undetected tag counter (step S52) and determines whether the value is “3” or more (step S53). If the value of the tag counter is less than “3”, the CPU 31 acquires the identifier of the undetected tag from the RFID search table 23a (step S54), and cancels the double-read prevention function for the undetected tag by searching by the identifier. An attempt is made (step S55). Here, if the cause of the undetected tag is a communication error during EPC transmission, the inventoried flag should have been changed to “not set”. And CPU31 returns to the process of step S45 which performs the search according to equipment types in the next inventory round.
- step S53 if the value of the tag counter is “3”, the value of the tag counter is reset to 0 (step S56), and the display device 35 is based on the data of the RFID position of the corresponding undetected tag in the RFID search table 23a.
- the position of the undetected tag is displayed on the screen, and the operator is prompted for visual confirmation, and the visual confirmation result is input by the input device 36 (step S57).
- the position of the seat number and the equipment determined from the X and Y coordinates is installed (for example, the life vest for adults) rather than displaying the position of the undetected tag on the display device 35 in the X and Y coordinates. If so, display under the seat.
- the CPU 31 determines whether or not the visual confirmation has been made based on the input of the visual confirmation result by the operator (step S58).
- the CPU 31 records the tag failure in the error table (step S59), and if the visual confirmation is not possible, records the absence of equipment in the error table (step S60).
- this error table has columns such as the type of equipment corresponding to the undetected tag, the error position, and the cause of error.
- step S61 the CPU 31 records the corresponding position of the undetected tag in the error table (step S61), sets other equipment types (step S62), and returns to the processing of step S43.
- the number of attempts to invalidate the twice read prevention function of the undetected tag is set to 2 times, but the number is not limited to this number.
- the undetected tag counter is used to count the number of attempts to disable the double-read prevention function, but when the undetected tag is found, the double-read prevention function is disabled.
- a cancel button may be prepared so that the buttons can be switched manually.
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Abstract
Description
備品点検装置1は、検索テーブル取得部2と、検索テーブル記憶部3と、タグ検索部4と、比較処理部5と、再検索処理部6とを備えている。一方、それぞれの備品に取り付けられるRFIDタグ7は、識別子8とフラグ9とを備え、フラグ9は、備品点検装置1の検索に対する応答時に未検出から検出済に反転可能な値を持つものである。
サーバ20は、コンピュータシステムで構成され、中央処理装置として機能するCPU(Central Processing Unit)21を備え、このCPU21は、メモリ22、外部記憶装置23および通信装置24にそれぞれ接続されている。
一方、RFIDタグ検索装置30は、いわゆる検品端末(ハンドヘルドターミナル:HHT)であり、小形のコンピュータシステムで構成される携帯端末装置である。RFIDタグ検索装置30は、専用のHHTでもよいし、汎用の通信機能内蔵のタブレット端末をソフトウェアによってHHTとして機能させるようにしてもよい。
表示装置35は、RFIDタグ検索装置30を所持する操作者に対して、機内地図情報23b、タグ検索エラーを含む各種の情報、または未検索・検索済区画を表示することができる。
RFIDタグ40a-40nは、その識別子としてEPCを有している。EPCは、たとえば、EPC長、メーカーコード、フィルタ値、シリアルNo.および製品No.を有している。ここで、フィルタ値とは、特定の種別の備品を検索するときに使用される備品種別を意味し、RFID検索テーブル23aで定義されている備品種別(RFID検出用フィルタ)に相当する。
このタグ検出シーケンスでは、説明を簡単にするために、2個のRFIDタグ40a,40bに対してタグ検出を行う場合を例に示す。ここで、RFIDタグ40aは、EPCが「A001」とし、RFIDタグ40bは、EPCが「A002」としている。なお、EPCの「A」は、備品種別であって、ライフベストを示している。その備品種別の後に続く「001」および「002」は、それぞれシリアルNo.を示している。
図7は起動時処理を示すフローチャート、図8はタグ検索処理を示すフローチャート、図9は位置区分算出処理を示すフローチャート、図10は位置区分内の全備品検索処理を示すフローチャート、図11はエラーテーブルの例を示す図である。
RFIDタグ40a-40nの検索処理では、図8に示したように、CPU31は、まず、RFIDタグ検索装置30を持参している操作者が機内のどこに位置しているかを示す位置区分を算出する(ステップS21)。
次に、CPU31は、機内のすべての位置区分の検索が終了したか否かを判断する(ステップS23)。まだ、機内のすべての位置区分の検索が終了していない場合、CPU31は、ステップS21に戻り、機内のすべての位置区分の検索が終了している場合には、このタグ検索処理を終了する。
2 検索テーブル取得部
3 検索テーブル記憶部
4 タグ検索部
5 比較処理部
6 再検索処理部
7 RFIDタグ
8 識別子
9 フラグ
10 備品点検システム
20 サーバ
21 CPU
22 メモリ
23 外部記憶装置
23a RFID検索テーブル
23b 機内地図情報
23b1 座席
23b2 ユーティリティ領域
23b3 通路
23b4 位置区分
24 通信装置
30 RFIDタグ検索装置
31 CPU
32 メモリ
33 リーダライタ装置
34 通信装置
35 表示装置
36 入力装置
40a-40n RFIDタグ
Claims (8)
- リーダライタ装置による検索に応答して反応した後では次回以降の検索に反応しない二度読み防止が可能なRFIDタグのためのタグ検出プログラムであって、
コンピュータに、
前記RFIDタグを検索し、
検索に応答して反応のあった前記RFIDタグと検索されるべき前記RFIDタグのタグ情報が記録された検索テーブルの前記タグ情報とを比較し、
反応のあった前記RFIDタグと前記タグ情報との比較から反応のあるはずの未検出RFIDタグがある場合、前記未検出RFIDタグを指定しての検索により検索に応答して反応する状態に戻す試みをして前記未検出RFIDタグの検索を行う、
処理を実行させる、タグ検出プログラム。 - 検索に応答して反応する状態に戻す試みとして、初期値が未検出で、検索に応答して反応するときに検出済となるインベントリ済フラグを強制的に未検出にする、請求項1記載のタグ検出プログラム。
- 検索に応答して反応する状態に戻す試みとして、前記未検出RFIDタグを指定しての検索のとき、先のインベントリラウンドでの検索に使用したセッションの番号とは異なる番号のセッションを使用する、請求項1記載のタグ検出プログラム。
- 前記未検出RFIDタグの検索は、所定回数繰り返しても前記未検出RFIDタグからの反応がないとき、表示画面にエラー表示をするとともにエラーテーブルに記録する、請求項1記載のタグ検出プログラム。
- 前記検索テーブルは前記RFIDタグが付された備品を配備している全領域が複数の位置区分に分割されていて前記RFIDタグが前記位置区分のどこに属しているかを記録しており、反応のあった前記RFIDタグと前記タグ情報との比較は前記位置区分毎に行う、請求項1記載のタグ検出プログラム。
- 検索されるべき前記RFIDタグが複数の備品種別に付されている場合、ある前記位置区分でのある備品種別の前記RFIDタグの検索を終了すると、他の備品種別の前記RFIDタグの検索に切り替え、すべての備品種別の前記RFIDタグの検索を終了すると、同じ前記位置区分での前記RFIDタグの検索を終了する、請求項5記載のタグ検出プログラム。
- 検索によりフラグが未検出状態から検出状態に遷移して二度読み防止状態となるRFIDタグが添付されている備品が所定位置に備えられていることを点検する備品点検装置であって、
前記備品と前記備品に添付された前記RFIDタグのタグ情報との対応関係を記録した検索テーブルをサーバからダウンロードする検索テーブル取得部と、
前記検索テーブル取得部により取得した前記検索テーブルを記憶する検索テーブル記憶部と、
前記RFIDタグを検索するタグ検索部と、
検索により前記フラグが検出状態に遷移して応答のあった前記RFIDタグと前記検索テーブルの前記タグ情報とを比較して前記備品の存在を点検する比較処理部と、
前記比較処理部による比較により応答のあるはずの未検出RFIDタグがある場合に、前記タグ検索部に対して前記未検出RFIDタグを指定しての検索により前記フラグを未検出状態に戻す試みをして前記未検出RFIDタグの検索を行うように指示する再検索処理部と、
を備えていることを特徴とする備品点検装置。 - タグ検索装置での検索によりフラグが未検出状態から検出状態に遷移して二度読み防止状態となるRFIDタグが添付されている備品が所定位置に備えられていることを点検する備品点検方法であって、
前記タグ検索装置が、
前記備品と前記備品に添付された前記RFIDタグのタグ情報との対応関係を記録した検索テーブルをサーバからダウンロードし、
前記備品に添付された前記RFIDタグを検索し、
検索により前記フラグが検出状態に遷移して応答のあった前記RFIDタグと前記検索テーブルの前記タグ情報とを比較し、
比較により応答のあるはずの未検出RFIDタグがある場合、前記未検出RFIDタグを指定しての検索により前記フラグを未検出状態に戻す試みをして前記未検出RFIDタグの検索を行う、
ことを特徴とする備品点検方法。
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PCT/JP2014/070169 WO2016016986A1 (ja) | 2014-07-31 | 2014-07-31 | タグ検出プログラム、備品点検装置および備品点検方法 |
EP14899002.1A EP3176724A4 (en) | 2014-07-31 | 2014-07-31 | Tag detection program, equipment inspection device and equipment inspection method |
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JP2020507517A (ja) * | 2017-02-14 | 2020-03-12 | システムズ アンド ソフトウェア エンタープライゼス, エルエルシーSystems And Software Enterprises, Llc | 救命胴衣の識別、検査、およびメンテナンスのための装置、システム、および方法 |
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