JP6638061B2 - System and method for associating a mobile terminal with a positioning terminal for positioning the mobile object - Google Patents

Description

  The present invention relates to a system and method for associating a mobile terminal with a positioning terminal that positions the mobile object.

  For example, in a factory, a warehouse, or the like, it is important to manage work results and positions of workers, which are examples of a moving body, from the viewpoint of progress management, productivity grasp, and the like. The work result data is acquired by a WMS (Warehouse Management System) or the like. The work result data includes an identifier of the worker who performed the work (hereinafter, worker ID).

  The positioning terminal carried by the worker receives a predetermined signal (for example, GPS (Global Positioning System), Wi-Fi, BLE (Bluetooth Low Energy), or a signal from a dedicated device for entering / leaving) or receives a PDR ( Position data is acquired by performing autonomous positioning based on acceleration using a technique such as Pedestrian Dead Reckoning. The position data includes an identifier (hereinafter, terminal ID) of the positioning terminal that measured the position.

  By combining the work result data and the position data of a certain worker, it is possible to perform more detailed progress management, productivity grasp, and the like for the worker. Here, in order to combine the work result data and the position data of a certain worker, it is necessary to associate the worker ID of the worker with the terminal ID of the positioning terminal that has positioned the worker.

  As a background art of the present technical field, there is Japanese Patent No. 5779347 (Patent Document 1). This publication states that “the collation unit 35 generates entry / exit history information including the user ID of the entered / exited user and the entry / exit date / time of the entry / exit for each entry / exit determined to be permitted. In the type specifying unit 36, for each entry / exit permitted by the collation unit 35, from the history definition information in the history definition information storage unit 34B based on the terminal ID of the operation terminal 23 on which the user operation was performed at the time of entry / exit, The work type corresponding to the entry / exit is specified, and the user ID and the entry / exit date and time included in the entry / exit history information generated by the collation unit 35 and the work identified by the work type identification unit 36 in the work result recording unit 45. The work result information is recorded for each user based on the type. "(See the summary).

Japanese Patent No. 5793447

  In the technology described in Patent Literature 1, the user ID and the terminal ID are associated in the matching information in advance, but Patent Literature 1 does not specifically describe a method of associating. For example, when manually associating the worker ID with the terminal ID, it is necessary to manually investigate the positioning terminals possessed by each worker and set the correspondence, and problems such as mistakes and labor in the survey and setting occur.

  If the worker ID of the worker in the work result data is the same as the terminal ID of the worker in the position data, the terminal ID is not required to be correlated. For example, when the positioning terminal and the positioning terminal belong to different systems, the worker ID and the terminal ID cannot always be set to the same value. Therefore, an object of one embodiment of the present invention is to automatically and accurately associate a moving object with a positioning terminal.

  In order to solve the above problem, one embodiment of the present invention employs the following configuration. A system for identifying, from a plurality of positioning terminals each measuring the position of one mobile object, a first positioning terminal that has measured the position of a mobile object performing a work group including one or more operations, comprising: a processor; A storage device, the storage device, the work result information indicating the work position where each work of the work group was performed, between the start time to the end time of the work group, each of the plurality of positioning terminals Holding the positioning information indicating the measured position of the moving object, and the processor acquires, for each of the plurality of positioning terminals, a measurement position indicated by the positioning information, and at the acquired measurement position, The number of measurement positions satisfying a predetermined condition including being within a predetermined distance from at least one work position indicated by the information is calculated, and based on each of the calculated numbers, There are, selects the first positioning terminal from said plurality of positioning terminal, the system.

  According to one embodiment of the present invention, association between a moving object and a positioning terminal can be automatically and accurately performed.

  Problems, configurations, and effects other than those described above will be apparent from the following description of the embodiments.

FIG. 2 is a block diagram illustrating a logical configuration example of an identifier association system according to the first embodiment. FIG. 2 is a block diagram illustrating a hardware configuration example of an identifier association system according to the first embodiment. 6 is an example of a work record table in the first embodiment. 7 is an example of a position stream table in the first embodiment. 6 is an example of a layout table in the first embodiment. 6 is an example of a position-based work record table in the first embodiment. 6 is a flowchart illustrating an example of a process of associating a worker ID with a terminal ID according to the first embodiment. 14 is an example of a work result table in the second embodiment. 14 is an example of a position-based work record table in the second embodiment. 12 is a flowchart illustrating an example of a neighborhood calculation process in a matching process according to the second embodiment. 17 illustrates an example of a work record table according to the third embodiment. 17 illustrates an example of a position-based work record table according to the third embodiment. 17 is a flowchart illustrating an example of a neighborhood calculation process in a matching process according to the third embodiment. FIG. 14 is a block diagram illustrating a logical configuration example of an identifier association system according to a fourth embodiment. 17 illustrates an example of a division profile table according to the fourth embodiment. 21 illustrates an example of a division position stream table according to the fourth embodiment. 17 is a flowchart illustrating an example of a stream division process according to the fourth embodiment. 17 This is an example of the display screen in the fourth embodiment. 17 This is an example of the display screen in the fourth embodiment. 17 This is an example of the display screen in the fourth embodiment. 21 is an example of a position stream table in the fifth embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that this embodiment is merely an example for realizing the present invention, and does not limit the technical scope of the present invention. In each of the drawings, common components are denoted by the same reference numerals.

  In the present embodiment, an example will be described in which the identifier association system associates a worker in a warehouse with a positioning terminal that measures the position of the worker. Note that the identifier association system is not limited to workers in the warehouse, and may associate other mobiles with positioning terminals that measure the positions of the mobiles. Also, the identifier association system of the present embodiment associates the worker with the positioning terminal using the work record including the position information of the worker, but moves using the action record including the position information of the moving body. The body and the positioning terminal may be associated with each other.

  FIG. 1A is a block diagram illustrating a logical configuration example of the identifier association system. The identifier association system 100 includes, for example, a work result database 101, a position stream database 102, a layout database 103, and a correspondence ID database 105, which are areas for storing data. Further, the identifier associating system 100 includes, for example, a position-based work record generation unit 111, a matching unit 112, and a display screen generation unit 113, which are functional units that realize predetermined functions. Further, the identifier association system 100 includes a time source 121.

  The work result database 101 holds work result information of workers in the warehouse. The position stream database 102 holds the position information of the worker in the warehouse measured by the positioning terminal, that is, the positioning information. The layout database 103 holds the layout information of the warehouse.

  The position-based work record database 104 holds information in which work records of workers in the warehouse are associated with the layout of the warehouse. The correspondence ID database 105 holds the correspondence between the worker ID and the terminal ID of the positioning terminal. In the correspondence held by the correspondence ID database 105 of the present embodiment, the worker ID and the terminal ID have a one-to-one correspondence.

  The position-based work record generation unit 111 associates the work record stored in the work record database 101 with the layout stored in the layout database 103, and stores the associated information in the position-based work record database 104. The matching unit 112 associates the worker ID with the terminal ID using the information stored in the work record database and the information stored in the position stream database 102, and stores the information indicating the correspondence in the correspondence ID database 105. Store.

  The display screen generation unit 113 generates a display screen in accordance with, for example, an instruction from the administrator of the identifier association system 100 and outputs the display screen to a display device such as a display described later. The display screen shows, for example, the correspondence between the worker ID and the terminal ID at a certain time and the position of the worker at the certain time.

  The time source 121 is used, for example, to synchronize the times of the identifier association system 100, the positioning terminal, and the work record terminal. The time source 121 operates according to, for example, a program for acquiring time from an NTP server, and indicates the acquired time.

  FIG. 1B is a block diagram illustrating an example of a hardware configuration of the identifier association system 100. The identifier association system 100 includes a computer having a processor (CPU) 1, a memory 2, an auxiliary storage device 3, and a communication interface 4.

  The processor 1 executes a program stored in the memory 2. The memory 2 includes a ROM as a nonvolatile storage element and a RAM as a volatile storage element. The ROM stores an immutable program (for example, BIOS) and the like. The RAM is a high-speed and volatile storage element such as a DRAM (Dynamic Random Access Memory), and temporarily stores a program executed by the processor 1 and data used when the program is executed.

  The program is executed by the processor 1 to perform predetermined processing while using a storage device and a communication port (communication device). Therefore, in the present embodiment, the description with the program as the subject may be a description with the processor 1 as the subject. Alternatively, a process executed by a program is a process executed by a computer and a computer system on which the program operates.

  The processor operates as a functional unit that implements a predetermined function by operating according to a program. For example, the processor 1 functions as the position-based operation result generation unit 111 by operating according to the position-based operation result generation program, and functions as the matching unit 112 by operating according to the matching program. The same applies to other programs. Further, the processor 1 also operates as a functional unit that implements each of a plurality of processes executed by each program. The computer and the computer system are devices and systems including these functional units.

  The auxiliary storage device 3 is configured by a large-capacity and non-volatile storage device such as a magnetic storage device (HDD) or a flash memory (SSD), for example, and executes a program executed by the processor 1 and data used when the program is executed ( For example, each database in FIG. 1 is stored. That is, the program is read from the auxiliary storage device 3, loaded into the memory 2, and executed by the processor 1.

  The communication interface 4 is a network interface device that controls communication with another device (the search engine server 120, the user terminal 130, the key server 140, and the like) according to a predetermined protocol.

  The identifier association system 100 may have an input interface 5 and an output interface 8. The input interface 5 is an interface to which a keyboard 6, a mouse 7 and the like are connected and receives input from an operator. The output interface 8 is an interface to which a display 9, a printer, and the like are connected, and that outputs an execution result of the program in a format that is visible to an operator. The identifier association system 100 may further include, for example, an NTP server serving as the time source 121.

  The program executed by the processor 1 is provided to the identifier association system 100 via a removable medium (CD-ROM, flash memory, or the like) or a network, and is stored in the nonvolatile auxiliary storage device 3 which is a non-temporary storage medium. You. For this reason, the identifier association system 100 may have an interface for reading data from a removable medium.

  The identifier association system 100 is a computer system configured on one computer physically or on a plurality of logically or physically configured computers, and operates on separate threads on the same computer. Alternatively, it may operate on a virtual computer constructed on a plurality of physical computer resources.

  FIG. 2 is an example of a work result table held by the work result database 101. In the present embodiment, an example in which the information used by the system is in a table format will be described. However, the information used by the system may be represented by any data structure without depending on the data structure. For example, a data structure appropriately selected from a table, list, database or queue can store the information. Information used by the information storage system is stored in a corresponding data storage area in the data storage device.

  The work result table 201 stores work results. The work record table 201 includes, for example, an instruction ID column 211, a worker ID column 212, a start time column 213, an end time column 214, a work place ID column 215, and a work content column 216.

  The instruction ID column 211 stores an ID for identifying a work instruction. The worker ID column 212 stores an ID for identifying a worker who has executed the work group indicated by the corresponding work instruction. The start time column 213 stores the time at which the work group indicated by the corresponding work instruction started. The end time column 214 stores the time at which the work group indicated by the corresponding work instruction ended. The work group includes one or more works.

  The work place ID column 215 stores a work place ID in which each work of the work group indicated by the corresponding work instruction has been executed. The work content column 216 stores the contents of each work of the work group indicated by the corresponding work instruction. Specifically, for example, the work content column 216 stores a character string indicating the work content. Further, for example, the work content column 216 may further store numerical data such as the ID of the sorted articles and the number of articles in the sorting work.

  The identifier associating system 100 receives, for example, information specifying work results from a WMS (Warehouse Management System) or the like, and generates a record of the work result table 201 according to the received information. In generating the record of the work record table 201, the identifier association system 100 adjusts the start time and the end time of the work included in the information for specifying the work record by using the time indicated by the time source 121, for example. After that, they are stored in the start time column 213 and the end time column 214.

  In the work result table 201 of the present embodiment, the order in which each work included in each work instruction is performed is not specified. For example, a worker receives a work instruction including a plurality of works by printing it from a WMS on paper at the start of the work, determines the order in which the work is to be performed by the worker, and determines all the work groups corresponding to the work instruction. When the completion of the work group is recorded in the WMS after the work is performed, the work result table 201 in such a format is generated.

  FIG. 3 is an example of a position stream table held by the position stream database 102. The position stream table 301 stores position information measured by the positioning terminal. The position stream table 301 includes, for example, a terminal ID column 311, a time column 312, and a position information column 313. The terminal ID column 311 stores a terminal ID for identifying a positioning terminal. The time column 312 stores the time at which positioning was performed.

  The position information column 313 stores the position measured by the positioning terminal. Note that the position stored in the position information column 313 may be represented by an absolute coordinate system such as a set of latitude, longitude, and height from the average sea level, or may be a position from a certain reference point in the building. It may be represented by a relative coordinate system indicating a relative positional relationship.

  The identifier association system 100 receives, for example, information specifying the position information measured by the positioning terminal from the positioning terminal, and generates a record of the position stream table 301 according to the received information. In the generation of the record of the position stream table 301, the identifier associating system 100, for example, adjusts the positioning time included in the information specifying the position information using the time indicated by the time source 121, and Stored in column 312.

  FIG. 4 is an example of a layout table 401 held by the layout database 103. The layout table 401 stores layout information in the warehouse. The layout table 401 is set in advance by, for example, an administrator of the identifier association system 100 or the like.

  The layout table 401 stores, for example, a work place ID column 411 and a position information column 412. The work place ID column 411 stores a work place ID for identifying a work place in the warehouse. The same work place ID in the work result table 201 and the work place ID in the layout table 401 are used. The position information column 412 indicates the position of the work place specified by the work place ID. The position stored in the position information column 412 may be represented by an absolute coordinate system or a relative coordinate system, similarly to the position stored in the position information column 313.

  FIG. 5 is an example of a position-based work record table held by the position-based work record database 104. The position-based work record table 501 includes, for example, an instruction ID column 511, a worker ID column 512, a start time column 513, an end time column 514, a position information column 515, and a work content column 516.

  The instruction ID column 511, the worker ID column 512, the start time column 513, the end time column 514, and the work content column 516 are described in the instruction ID column 211, the worker ID column 212, the start time column 213, and the end time column 214. , And the work content column 216 are omitted. The description of the position information column 515 is the same as the description of the position information column 412, and will not be repeated.

  Note that the position-based work record generation unit 111 replaces the work place ID column 215 of the work record table 201 with the position information column 412 of the layout table 401 using the work place ID as a key. create. The position-based work record generation unit 111 generates the position-based work record table 501, for example, periodically or in accordance with an instruction from an administrator.

  FIG. 6 is a flowchart illustrating an example of a process in which the matching unit 112 associates the worker ID with the terminal ID. First, the matching unit 112 reads the position-based work record table 501 (step 601).

  For example, the matching unit 112 sequentially executes the following steps 602 to 605 on each record included in the position-based work record table 501. Hereinafter, an example in which the matching unit 112 executes the processing of steps 602 to 605 on the first record of the position-based work record table 501 will be described.

  The matching unit 112 extracts, from the position stream table 301, a record in which the value of the time column 312 is after the start time indicated by the first record and before the end time (step 602). If there is no record in the position stream table 301 whose value in the time column 312 is after the start time of the first record and before the end time, the matching unit 112 does not execute the processing from step 603 on for the first record.

  Next, the matching unit 112 separates a set of records of the position stream table 301 extracted in Step 602 for each terminal ID (Step 603). Then, for each record group having the same terminal ID extracted in step 603 of the position stream table 301, the matching unit 112 determines the number of records corresponding to the vicinity of the position included in the position information column 515 of the first record. Is calculated (step 604).

  The vicinity of a certain position indicates a range within a predetermined distance from the coordinates of the position. Note that the distance in the present embodiment may be a Euclidean distance, or may be a distance on the moving path when the moving path of the worker is limited. Note that the predetermined distance may be different for each work place ID.

  A specific example of the processing of step 604 will be described by taking the first record group having the first terminal ID of the position stream table 301 extracted in step 603 as an example. The matching unit 112 compares, for example, the position indicated by each record of the first record group with each position indicated by the first record, and compares the position indicated by the first record with the first record group that is near any of the positions indicated by the first record. Is calculated.

  When the position indicated by the records at a plurality of consecutive times in the first record group is near any one of the positions indicated by the first record, the matching unit 112 determines that only one record is included in the plurality of records. Is desirably regarded as a record corresponding to the vicinity of the position indicated by the first record. The matching unit 112 can prevent such a situation that the position corresponding to the work in the case where the user has been in the same place for a long time is counted twice. The accuracy of determining the correspondence with the terminal ID can be improved.

  Finally, the matching unit 112 selects a record group in which the number of neighboring records calculated in step 604 is the largest, and determines that the terminal ID and the worker ID corresponding to the selected record group correspond to each other. Then, the correspondence between the terminal ID and the worker ID is stored in the correspondence ID database 105 (step 605).

  Note that when there are a plurality of record groups in which the number of neighboring records calculated in step 604 is the largest, the matching unit 112 may, for example, randomly select one record group. Also, in this case, the matching unit 112 executes the processing of steps 602 to 604 on the second record of the position-based work record table 501 having the same worker ID 212 as the first record, and A record group in which the number of neighboring records calculated in step 604 executed for two records is the largest may be selected.

  When the correspondence including at least one of the terminal ID and the worker ID included in the correspondence determined in step 605 is already included in the correspondence ID database 105, the matching unit 112 may include the correspondence in the correspondence ID database 105, for example. The corresponding correspondence is deleted from the correspondence ID database 105.

  As described above, the identifier associating system 100 of the present embodiment automatically and highly accurately compares the worker ID with the terminal information by comparing the position information indicated by the work performance of the worker with the position information measured by the positioning terminal. The correspondence with the ID can be determined.

  In the present embodiment, a description will be given of a process when the order in which the work of the work group included in each work instruction is performed is specified. In this embodiment and another embodiment described later, differences from the first embodiment will be described.

  FIG. 7 is an example of the work record table 201 of the present embodiment. The work result table 201 of the present embodiment further includes, for example, a result number column 711 for storing a result number. The result No. indicates the order in which each work of the work group of each work instruction was performed. Therefore, although the time at which each work included in each work instruction in the work record table 201 of this embodiment is performed is not recorded, the order in which each work is performed is recorded.

  For example, when a worker carries a portable terminal capable of locally recording the content of work performed, saves a record of the work locally in the portable terminal every time work is performed at each work place, and transmits the record to the WMS later. In, the work result table 201 of the present embodiment is created.

  FIG. 8 is an example of the position-based work record table 501 of the present embodiment. The position-based work record table 501 of the present embodiment further includes, for example, a record No. column 811. The description of the result No. column 811 is the same as the description of the result No. column 711, and will not be repeated.

  FIG. 9 is a flowchart illustrating an example of the neighborhood calculation process in the matching process according to the present embodiment. The matching unit 112 according to the present embodiment performs the process illustrated in FIG. 9 instead of step 604 for each record group having the same terminal ID extracted in step 603 of the position stream table 301. Hereinafter, a specific example of the processing in FIG. 9 will be described using the first record group having the first terminal ID of the position stream table 301 extracted in step 603 of the first embodiment as an example.

  First, the matching unit 112 defines a time variable t, and initializes t (step 901). Note that the initial value of t is the start time of the first record shown in the description of FIG. 6 of the first embodiment. The matching unit 112 defines a variable i for reference of the record No, and initializes i (step 902). Note that the initial value of i is the minimum value of the record No. included in the first record. The matching unit 112 defines a variable c for counting the proximity and initializes c (step 903). Note that the initial value of c is 0.

  The matching unit 112 acquires the position indicated by the position information corresponding to the same record No. as the variable i from the first record (step 904). The matching unit 112 acquires, from the first record group, the position indicated by the position information of the record closest to the variable t among the times after the variable t (step 905). If there is no record at the time after the variable t in the first record group, the matching unit 112 transitions to, for example, step 908 described below.

  The matching unit 112 determines whether the position acquired in Step 904 is near the position acquired in Step 905 (Step 906). When determining that the position acquired in Step 904 is not near the position acquired in Step 905 (Step 906: No), the matching unit 112 determines whether the variable t is later than the end time of the first record. (Step 910).

  If the value of the variable t is before the end time of the first record (Step 910: No), the matching unit 112 adds a predetermined value to the variable t (Step 911), and transitions to Step 905. The predetermined value to be added to the variable t is, for example, a sampling interval of positioning in the terminal having the first terminal ID. If the value of the variable t is later than the end time of the first record (Step 910: Yes), the process proceeds to Step 909.

  When determining that the position acquired in Step 904 is not near the position acquired in Step 905 (Step 906: Yes), the matching unit 112 adds 1 to the variable c (Step 907). The matching unit 112 determines whether the value of the variable i is equal to or greater than the maximum value of the record No. in the first record (Step 908).

  When the value of the variable i is less than the maximum value of the record No in the first record (Step 908: No), the matching unit 112 adds 1 to the variable i (Step 912), and proceeds to Step 904. When the value of the variable i is equal to or greater than the maximum value of the record No in the first record (Step 908: Yes), the matching unit 112 replaces the number of neighboring records in the first record group calculated in Step 604 with: The value of the variable c is returned (Step 909).

  The identifier association system 100 according to the present embodiment can determine the correspondence between the worker ID and the terminal ID with higher accuracy by further using the order in which the tasks in each task group are executed.

  In the present embodiment, a process in the case where the time at which each work included in each work instruction is performed is specified will be described.

  FIG. 10 is an example of the work record table 201 of the present embodiment. The work result table 201 of the present embodiment further includes a time column 1011 and does not include a start time column 213 and an end time column 214. The time column 1011 indicates the time at which each work included in each work instruction was performed.

  For example, when a worker carries a portable terminal capable of network communication and can transmit a work record to a WMS or the like every time he or she works at each work place, the work result table 201 of the present embodiment is created.

  FIG. 11 is an example of the position-based work record table 501 of the present embodiment. The position-based work record table 501 of this embodiment includes a time column 1111 and does not include a start time column 513 and an end time column 514. The description of the time column 1111 is the same as the description of the time column 1011 and will not be repeated.

  FIG. 12 is a flowchart illustrating an example of the neighborhood calculation process in the matching process according to the present embodiment. The matching unit 112 according to the present embodiment performs the processing illustrated in FIG. 12 instead of step 604 for each record group having the same terminal ID in the position stream table 301 extracted in step 603. Hereinafter, an example of the processing of FIG. 12 for the first record group having the first terminal ID of the position stream table 301 extracted in step 603 of the first embodiment will be described.

  First, the matching unit 112 defines and initializes a variable i for specifying the work order included in the first record shown in the description of FIG. 6 of the first embodiment (step 1201). Note that the initial value of the variable i is 1. The matching unit 112 defines and initializes a variable c (step 1202). Note that the variable c is the same as the variable c in the second embodiment.

  The matching unit 112 sorts the combination of the time, the position information, and the work content in the first record in ascending time order, and acquires the time of the i-th work and the position corresponding to the time (step 1203). The matching unit 112 obtains, from the first record group, the position indicated by the position information of the record at the time closest to the variable t obtained in step 1203 among the times after the time obtained in step 1203 (step 1204). . If there is no record in the first record group with a time after the time acquired in step 1203, the matching unit 112 transitions to, for example, step 1207 described below.

  The matching unit 112 determines whether the position acquired in step 1203 is near the position acquired in step 1204 (step 1205). If the matching unit 112 determines that the position obtained in step 1203 is near the position obtained in step 1204 (step 1205: Yes), it adds 1 to the variable c (step 1206), and proceeds to step 1207 described later. Transition. If the matching unit 112 determines that the position acquired in step 1203 is not near the position acquired in step 1204 (step 1205: No), the process proceeds to step 1207.

  The matching unit 112 determines whether or not the first record includes the (i + 1) th record (step 1207). When the matching unit 112 determines that the first record includes the (i + 1) th record (step 1207: Yes), the matching unit 112 adds 1 to the variable i (step 1209), and transitions to step 1203. When determining that the (i + 1) -th record is present in the first record (step 1207: Yes), the matching unit 112 returns the value of the variable c instead of the number of neighboring records in the first record group calculated in step 604. (Step 1208).

  The identifier association system 100 according to the present embodiment can determine the correspondence between the worker ID and the terminal ID with higher accuracy by further using the time at which the work of each work group is executed.

  The present embodiment describes an identifier association system 100 for dividing position stream data. For example, when the positioning terminal is expensive, a plurality of workers are required to use the positioning terminal at different times.

  In the case where different operators use the positioning terminal according to the time zone, the identifier associating system 100 according to the present embodiment, for example, divides the position stream of one terminal ID into one divided position stream. The correspondence between the ID and one worker ID is determined. The identifier associating system 100 according to the present embodiment divides a position stream based on a feature of a task that a worker passes a specific place at the start and end of the task.

  FIG. 13 is a block diagram illustrating a logical configuration example of the identifier association system 100 according to the present embodiment. The identifier association system 100 further includes, for example, a division position stream database 1301 and a division profile database 1304, which are areas for storing data. In addition, the identifier association system 100 further includes, for example, a stream division unit 1311 and a divided stream numbering unit 1321, which are functional units that realize predetermined functions.

  The division profile database 1304 holds setting values for dividing the position stream. The divided position stream database 1301 holds divided positioning information of the positioning terminal.

  The stream division unit 1311 divides the positioning information stored in the position stream database 102. The divided stream numbering unit 1321 assigns an identifier to the positioning information divided by the stream dividing unit 1311 and stores the identifier in the divided position stream database 1301. Further, the correspondence ID database 105 of the present embodiment holds the correspondence between the division position stream ID, which is the identifier of the division position stream, and the worker ID.

  FIG. 14 is an example of a divided profile table held by the divided profile database 1304. The division profile table 1401 includes, for example, a location type column 1411, a position information column 1412, and a threshold column 1413. The place type column 1411 indicates, for example, a type of a place where the worker passes or stays before or after the work or during the work, and stores a character string indicating a type such as a work start position or a work end position.

  The location information column 1412 indicates the location of the location indicated by the value of the corresponding location type column 1411. The position stored in the position information column 1412 may be represented by an absolute coordinate system or a relative coordinate system, similarly to the position stored in the position information column 313. The threshold value column 1413 indicates a threshold value of the distance from the place in the process of determining that the vehicle has passed or stayed at the place indicated by the value of the corresponding place type field 1411.

  FIG. 15 is an example of a division position stream table held by the division position stream database 1301. The division position stream table 1501 includes, for example, a division position stream ID column 1511, a terminal ID column 1512, a time column 1513, and a position information column 1514. The division position stream ID column 1511 is an identifier of the position stream divided by the stream division unit 1311. The description of the terminal ID column 1512, the time column 1513, and the position information column 1514 is the same as the description of the terminal ID column 311, the time column 312, and the position information column 313 of the position stream table 301, and will not be repeated.

  FIG. 16 is a flowchart illustrating an example of the stream division processing. First, the stream division unit 1311 reads a record in which the value of the time column 312 of the position stream table 301 is included in a predetermined period, and separates the read record for each terminal ID (Step 601).

  The predetermined period may be a short period such as one minute from the latest time in the position stream table 301 or a long period such as one day from the latest time. Further, as in the case of the stream data processing, the record of the predetermined period may be continuously read every predetermined period.

  The stream division unit 1311 performs the following steps 1602 to 1605 on each of the records having the same terminal ID extracted in step 1601 of the position stream table 301. Hereinafter, a specific example of the processing of steps 1602 to 1605 will be described using the first record group having the first terminal ID of the position stream table 301 extracted in step 1601 as an example.

  Next, the stream division unit 1311 divides the records of the first record group using the values of the division profile table 1401 (Step 1602). Specifically, for example, the stream division unit 1311 uses each value of the position information column 1412 of the division profile table 1401 and each value of the threshold value column 1413 to determine the location indicated by each record of the division profile table 1401. Specify the area occupied by.

  The stream division unit 1311 sorts the records of the first record group in ascending time order. The stream division unit 1311 specifies, from the first record group, a record indicating a position included in any of the specified regions as a division reference record. For example, the stream division unit 1311 deletes each of the specified division reference records from the first record group, and divides the first record group before and after each of the deleted division reference records. Further, the stream division unit 1311 may divide the first record group immediately before or immediately after each of the specified division reference records without deleting the specified division reference record, for example.

  The divided stream numbering unit 1321 assigns an identifier to each record group divided in step 1602, that is, to each divided position stream (step 1603). The divided stream numbering unit 1321 stores each of the divided position streams in the divided position stream database 1301 (Step 1604).

  In the processing of FIG. 6, the matching unit 112 of the present embodiment uses the division position stream table 1501 instead of the position stream table 301, and the division position stream ID instead of the terminal ID to determine the division position stream ID. The correspondence between the division position stream ID and the worker ID is stored in the correspondence ID database 105. Note that the matching unit 112 may store the correspondence between the terminal ID corresponding to the divided stream ID and the worker ID in the correspondence ID database 105.

  Further, in step 605 for the first record, the matching unit 112 of the present embodiment may further include a period from the start time to the end time in the first record in the correspondence between the terminal ID and the worker ID.

  Further, in the present embodiment, even if the correspondence including at least one of the terminal ID and the worker ID included in the correspondence determined in step 605 is already included in the correspondence ID database 105, the matching unit 112 determines that the correspondence ID database 105 Do not delete the correspondence already included in the. However, the correspondence ID database 105 already includes a correspondence that includes at least one of the terminal ID and the worker ID included in the correspondence determined in step 605 and has a period that at least partially overlaps with the period included in the correspondence. If so, the matching unit 112 deletes the correspondence already included in the correspondence ID database 105.

  In the above-described example, the division profile table 1401 indicates the position where the position stream is divided, and the stream division unit 1311 divides the position stream at a time corresponding to the position. However, the division profile table 1401 may indicate the time at which the position stream is divided. For example, when the shifts of the workers are separated in the form of day shift and night shift, and when the time zone of each shift is known, the divided profile table 1401 includes, for example, the switching time of each shift and a threshold. Accordingly, the stream division unit 1311 can also divide the position stream based on the time indicated by the division profile table 1401.

  With the above processing, the identifier association system 100 of the present embodiment automatically associates the worker ID with the terminal ID even when a plurality of workers share one positioning terminal at another time. Can be determined accurately and accurately.

  FIG. 17A and FIG. 17B are examples of a display screen output by the display screen generation unit 113 to the display 9. The display screen 1701 includes, for example, a time display area 1702 and a position display area 1703. Time display area 1702 displays the time. The position display area 1703 stores the correspondence between the worker ID performing the work at the time indicated by the time display area 1702 and the terminal ID of the positioning terminal carried by the worker, and information indicating the position of the worker at the time. indicate.

  The display screen generation unit 113 includes, for example, the time specified by the administrator or the like in the time display area 1702. In addition, the display screen generating unit 113 may start generating the display screen 1701 at a predetermined interval, and may include the start time in the time display area 1702.

  In addition, the display screen generation unit 113 acquires the correspondence between the worker ID and the terminal ID at the time displayed in the time display area 1702 from the correspondence included in the correspondence ID database 105. Further, the display screen generation unit 113 acquires, from the position stream table 301 or the division position stream table 1501, position information corresponding to the terminal ID included in the acquired correspondence.

  The display screen generation unit 113 includes information indicating the acquired correspondence and the position information in the position display area 1703. Note that the display screen generation unit 113 further acquires position information of each work place from the layout table 401, and further includes the layout information of the work place in the position display area 1703 as in the example of FIGS. 17A and 17B. Is also good.

  In the present embodiment, there is a possibility that different workers use one terminal at different times, like the terminal with the terminal ID 2 in the example of FIGS. 17A and 17B.

  FIG. 18 is another example of the display screen output by the display screen generation unit 113 to the display 9. The display screen 1801 includes, for example, a period display area 1802, a display terminal display area 1803, and a corresponding display area 1804. The period display area displays a period. The display terminal display area 1803 indicates a terminal to be displayed in the corresponding display area 1804. The correspondence display area 1804 displays the correspondence between the terminal ID of the terminal indicated by the display terminal display area 1803 and the worker ID during the period displayed in the period display area 1802.

  The display screen generation unit 113 includes, for example, a period specified by an administrator or the like in the period display area 1802. In addition, the display screen generation unit 113 includes, for example, information indicating a terminal designated by an administrator or the like in the display terminal display area 1803. FIG. 18 is an example in which all terminals included in the position stream table 301 are to be displayed.

  The display screen generation unit 113 acquires, from the correspondence included in the correspondence ID database 105, a correspondence including the time included in the period and the terminal ID of the designated terminal. The display screen generation unit 113 includes information indicating the acquired correspondence in the correspondence display area 1804.

  In the present embodiment, there is a possibility that different workers use one terminal at different times, like the terminals of terminal ID2 and terminal ID3 in the example of FIG. The administrator can easily confirm the transition of the correspondence between the terminal ID and the worker ID by referring to the display screen 1801.

  The identifier associating system 100 according to the present embodiment specifies the time at which a predetermined event has occurred using information attached to the position stream in the fourth embodiment, and divides the position stream. In the present embodiment, differences from the fourth embodiment will be described. Further, in the present embodiment, as in the case of the fourth embodiment, the processing of steps 1602 to 1605 will be described using the first record group having the first terminal ID of the position stream table 301 as an example.

  FIG. 19 is an example of the position stream table 301 of the present embodiment. The position stream table 301 further includes, for example, an additional information column 1911 for holding additional information. The additional information indicates, for example, a state of the positioning terminal or an event occurring in the positioning terminal when the positioning terminal transmits the position stream.

  The first information indicating that the state of the positioning terminal switches from the charging state to the battery operation state and from the battery operation state to the charging state is an example of additional information. For example, when the worker removes and carries the positioning terminal from the charger at the start of the work and the worker installs the positioning terminal on the charger at the end of the work, the switching between the charging state and the battery state of the positioning terminal is performed. Is likely to indicate the replacement of the person. When the additional information column 1911 holds the first information, in step 1602, the stream division unit 1311 detects, as a predetermined event, switching between the charging state and the battery state of the positioning terminal having the first terminal ID.

  The second information indicating whether or not the norm of the acceleration detected by the positioning terminal while the positioning terminal is being worn by the worker is equal to or greater than a predetermined value is an example of additional information. The worker wears the positioning terminal at the start of the work and moves to the work place by accelerating, and at the end of the work, wears the positioning terminal and moves to the work end place at a reduced speed. Is likely to be equal to or greater than a predetermined value. When the additional information column 1911 holds the second information, in step 1602, the stream division unit 1311 detects that the norm of the acceleration of the positioning terminal having the first terminal ID is equal to or more than a predetermined value as a predetermined event. Note that the predetermined value may be different depending on the positioning terminal.

  When the positioning terminal has a button, the third information indicating that the button has been pressed is an example of additional information. When the additional information column 1911 holds the third information, the stream division unit 1311 detects that the button is pressed as a predetermined event in step 1602.

  In step 1602, the stream division unit 1311 specifies, for example, a record indicating a time at which a predetermined event has occurred from the first record group as a division reference record. Also, in step 1602, the stream division unit 1311 specifies, for example, a record indicating a position included in any of the specified areas and indicating a time when a predetermined event has occurred from the first record group as a division reference record I do.

  As described above, the identifier associating system 100 of the present embodiment further uses the additional information so that even if a plurality of workers share one positioning terminal at another time, the worker ID and the terminal ID Can be determined with higher accuracy.

  Note that the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. Further, for a part of the configuration of each embodiment, it is possible to add, delete, or replace another configuration.

  In addition, each of the above-described configurations, functions, processing units, processing means, and the like may be partially or entirely realized by hardware, for example, by designing an integrated circuit. In addition, the above-described configurations, functions, and the like may be realized by software by a processor interpreting and executing a program that realizes each function. Information such as programs, tables, and files for realizing each function can be stored in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.

  In addition, control lines and information lines are shown as necessary for the description, and do not necessarily indicate all control lines and information lines on a product. In fact, it can be considered that almost all components are connected to each other.

Claims (12)

A system for identifying, from a plurality of positioning terminals each measuring a position of one mobile body, a first positioning terminal that measures a position of a mobile body performing a work group including one or more operations,
A processor and a storage device,
The storage device,
Work result information indicating a work position at which each of the works in the work group was performed,
Between the start time and the end time of the work group, the positioning information indicating the measurement position of the moving object measured by each of the plurality of positioning terminals,
The processor comprises:
For each of the plurality of positioning terminals,
Obtain a measurement position indicated by the positioning information,
In the acquired measurement positions, the number of measurement positions that satisfy a predetermined condition including being within a predetermined distance from at least one operation position indicated by the operation result information is calculated,
A system for selecting the first positioning terminal from the plurality of positioning terminals based on each of the calculated numbers. The system according to claim 1, wherein
The positioning information indicates, in each of the plurality of positioning terminals, a measurement order in which the measurement positions are measured,
The processor comprises:
In calculating the number in each of the plurality of positioning terminals,
Of the acquired measurement positions, when a plurality of measurement positions continuous in the measurement order indicated by the positioning information are within the predetermined distance from the same work position indicated by the work performance information, the plurality of measurement positions A system that determines that only one measurement position satisfies the predetermined condition. The system according to claim 1, wherein
The positioning information indicates, in each of the plurality of positioning terminals, a measurement order in which the measurement positions are measured,
The work result information indicates a work order in which each work of the work group is performed,
The processor comprises:
In calculating the number in each of the plurality of positioning terminals,
Performing a first process on each of the tasks in the task group in order according to the task order;
In the first processing for the first work of the work group,
With reference to the work result information and the positioning information, determine whether the obtained measurement position includes a first measurement position within the predetermined distance from the position where the first work was performed,
When it is determined that the acquired measurement position includes the first measurement position, it is determined that the earliest measurement position in the measurement order among the first measurement positions satisfies the predetermined condition,
If it is determined that the acquired measurement position does not include the first measurement position, the first processing for the remaining work included in the work group is stopped, the number is determined to be zero,
In the first processing for each of the second and subsequent works in the work order of the work group,
With reference to the work result information and the positioning information, the first processing for the work that is within the predetermined distance from the position where the work was performed and that was performed immediately before in the work order from the work is performed in the first process. A second measurement position, which is later in the measurement order than the measurement position determined to satisfy the predetermined condition, determines whether or not the acquired measurement position is included,
When it is determined that the acquired measurement position includes the second measurement position, it is determined that the earliest measurement position in the work order among the second measurement positions satisfies the predetermined condition,
If it is determined that the acquired measurement position does not include the second measurement position, the first processing for the remaining work included in the work group is stopped, and the number is reduced to the second and subsequent first processing. A system that determines the number of measurement positions satisfying the predetermined condition. The system according to claim 1, wherein
The positioning information, in each of the plurality of positioning terminals, indicates the measurement time when the measurement position was measured,
The work result information indicates a work time at which each work of the work group was performed,
The processor comprises:
In calculating the number in each of the plurality of positioning terminals,
Performing a second process on each of the tasks in the task group in the order of the earlier task time;
In the second processing for each work of the work group,
With reference to the work result information and the positioning information, among the acquired measurement positions, a measurement position having a measurement time closest to the work time at a measurement time after the work time of the work is a measurement position of the work. A system that determines that the measurement position satisfies the predetermined condition when it is determined that the measurement position is within the predetermined distance from the work position. The system according to claim 1, wherein
The storage device further holds area information indicating one or more predetermined areas,
The positioning information, in each of the plurality of positioning terminals, indicates the measurement time when the measurement position was measured,
The processor comprises:
For each of the plurality of terminals,
At the measurement time corresponding to the position of the terminal indicated by the positioning information included in any of the one or more predetermined areas, it is determined that the mobile object that the terminal measures is changed,
In the positioning information, the measurement position measured by the terminal is divided into measurement position groups for each moving object,
For each of the measurement position groups, among the measurement positions of the measurement position group, calculate the number of measurement positions that satisfy the predetermined condition,
Based on the number calculated for each of the measurement position groups, from the measurement position group of each of the plurality of terminals, corresponding to the moving body performing the work group, select the measurement position group of the first positioning terminal, system. The system according to claim 1, wherein
The storage device further holds event information indicating an occurrence time of a predetermined event generated in each of the plurality of terminals,
The positioning information, in each of the plurality of positioning terminals, indicates the measurement time when the measurement position was measured,
The processor comprises:
For each of the plurality of terminals,
At the time when the event has occurred, it is determined that the moving object to be located by the terminal has been changed,
In the positioning information, the measurement position measured by the terminal is divided into measurement position groups for each moving object,
For each of the measurement position groups, among the measurement positions of the measurement position group, calculate the number of measurement positions that satisfy the predetermined condition,
Based on the number calculated for each of the measurement position groups, from the measurement position group of each of the plurality of terminals, corresponding to the moving body performing the work group, select the measurement position group of the first positioning terminal, system. The system according to claim 6, wherein
The system, wherein the event is that the acceleration of the positioning terminal is equal to or greater than a predetermined value. The system according to claim 6, wherein
The system, wherein the event is switching between a charging state and a battery operation state in each of the positioning terminals. The system according to claim 6, wherein
The system, wherein the event is execution of a predetermined operation for each positioning terminal. The system according to claim 1, wherein
Further comprising a display device,
The system wherein the processor outputs, to the display device, a combination of the moving object that has performed the work group and the first positioning terminal. The system according to claim 10, wherein
The positioning information indicates, at the first positioning terminal, a measurement time at which the measurement position was measured,
The processor comprises:
Accept the input of the first time,
From the positioning information, obtain a measurement position of the first positioning terminal at the first time,
A system further outputting the obtained measurement position to the display device. A method wherein the system identifies, from a plurality of positioning terminals each measuring the position of one mobile object, a first positioning terminal that has measured the position of the mobile object performing a work group consisting of one or more operations. ,
The system comprises:
Work result information indicating a work position at which each of the works in the work group was performed,
Between the start time and the end time of the work group, measurement position information indicating the measurement position of the moving object measured by each of the plurality of positioning terminals, and holds
The method, wherein the system comprises:
For each of the plurality of positioning terminals,
Obtain the measurement position indicated by the measurement position information,
In the acquired measurement positions, the number of measurement positions that satisfy a predetermined condition including being within a predetermined distance from at least one operation position indicated by the operation result information is calculated,
A method of selecting the first positioning terminal from the plurality of positioning terminals based on each of the calculated numbers.

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