JP2011092482A - Position information acquisition device and position information acquisition method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a position information acquisition device and a position information acquisition method capable of automatically obtaining position information of a particular direction of an information display means, for example, the information of the height where the information display means is installed, without recording the position information of the information display means in advance. <P>SOLUTION: The position information acquisition device includes: an information detection means to detect identification information used for identifying the information display means which displays the information for identifying goods; a coordinate detection means to detect the coordinate when the identification information is detected by the information detection means against the first standard coordinate which is set beforehand; a position information calculation means to calculate the information of the position when the identification information is detected by the information detection means based on the first standard coordinate and the coordinate detected by the coordinate detection means; and a position information correction means to correct the position information in a particular direction when the identification information calculated by the position information calculation means is detected based on the known information fixed beforehand. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a position information acquisition device and a position information acquisition method for acquiring information of a position where an information display means for displaying information on an article is installed.

  In order to identify an article stored in a shelf or the like, a tag on which information related to the article is written (printed) is placed on a shelf that stores the article. For this tag, a paper medium is conventionally used. For example, article information such as an article name and article identification information (barcode) is written on the paper medium, and the tag is pasted on a shelf storing articles. , Identified the goods that were stored. For example, in stores such as supermarkets and convenience stores, products are displayed on product display shelves, and product shelf labels that describe product information such as product names and prices are affixed to the product display shelves.

  Further, in recent years, electronic bills that describe information on the article have been digitized. For example, information display devices including display means such as a liquid crystal display device are used. As a system using this information display device, for example, in a store as described above, there is an electronic shelf label system that displays product information such as product names and prices of products displayed on the product display shelf on the information display device. It's being used. In this electronic shelf label system, an electronic shelf label management server installed in a backyard for storing and managing products on the back side of the store, and a store clerk (employee) carry it to check product management information such as product inventory. A portable terminal device (handy terminal) and an ESL (Electronic Shelf Label) that is installed on a merchandise display shelf and displays merchandise information are connected by communication means such as wireless communication. As a result, work equivalent to work in which a store clerk has pasted product information tags previously described on paper media can be easily performed by changing the display content (display data) of the ESL by means of communication means. This has contributed to reducing the labor of shop assistants by changing the product name associated with the change in the displayed product, changing the display price associated with the change in the product price, and displaying detailed product information associated with the inventory check.

  Also, in this electronic shelf label system, product management data is created by associating the product code of the product displayed on the product display shelf with the shelf label code individually assigned to each ESL. We manage products based on For example, when checking inventory information of products displayed on a product display shelf, a store clerk first reads a shelf label code with a portable terminal device. The mobile terminal device that has read the shelf label code transmits the read shelf label code to the electronic shelf label management server. The electronic shelf label management server that has received the shelf label code transmits the inventory information of the product linked to the shelf label code to the mobile terminal device. The mobile terminal device that has received the product inventory information displays the received product inventory information on the display unit of the mobile terminal device. The store clerk confirms the inventory information of the product displayed on the mobile terminal device. In this way, it is possible to confirm information on the products displayed on the product display shelf.

  As described above, in order to confirm product information, it is first necessary for a store clerk to identify an ESL whose information is to be confirmed, and to read the shelf label code of the identified ESL with a portable terminal device. However, the installation position of the ESL is not limited to the place where the store clerk can reach. Therefore, in Patent Document 1, the product display shelf and the positional information of the ESL installed on the product display shelf are recorded in advance, and the desired ESL is specified remotely using the acceleration sensor provided in the mobile terminal device. Techniques to do this are disclosed.

  In addition, since the display position of the product greatly affects the sales of the product at the above-mentioned stores, it is desirable to acquire and manage information on the display position of the product for the purpose of improving the sales of the product. It is rare. In particular, the information on the level of the merchandise on the merchandise display shelf is very important information for the merchandise sales strategy, and it is desired that this information can be grasped. As means for acquiring information on the display position of the product, for example, it is considered to grasp the display position of the product in the store by acquiring the position information of the ESL displaying the product information.

  However, in the conventional electronic shelf label system, the product management data in which the product code of the product and the ESL shelf code are linked as described above is held in the electronic shelf label management server. The position information of the ESL is not data normally held in the electronic shelf label management server. For this reason, it is impossible to manage information such as which ESL is installed where and information on the display position of the product such as which product display shelf the product is on.

  Patent Document 2 discloses a method of obtaining a product position information based on a product code read in a predetermined order when a product code is read by a mobile terminal device in advance. .

JP 2009-91102 A Japanese Patent Laid-Open No. 3-123992

  As described above, the method of acquiring the information on the display position of the product by acquiring the position information of the ESL, in particular, the information on what level the product is displayed on the product display shelf, improves the efficiency of store operations. It is a useful way to contribute. However, since the conventional electronic shelf label system does not record the position information of the installed ESL, it is necessary to newly record the position information of the ESL in advance on the electronic shelf label management server. In order to record the ESL position information, it is necessary to manually input a large number of ESL position information corresponding to the number of products to be displayed, and this manual input is a very difficult operation. In addition, changing the displayed product on the product display shelf and changing the ESL position information associated with the change in the product display position in the product display shelf are very complicated operations.

  Moreover, although the technique described in Patent Document 1 specifies an ESL using an acceleration sensor, the acceleration sensor is merely used as an input unit for specifying the ESL. Therefore, Patent Document 1 is not a technique for acquiring ESL position information. Accordingly, even in Patent Document 1, information on the installation position of the product display shelf in the store and the installation position of the ESL installed on the product display shelf is grasped in advance, and information is sent to the electronic shelf label management server based on the grasped information. There is a problem that it takes a lot of time and effort.

  Moreover, the technique described in Patent Document 2 specifies the position of the product based on the order of reading the product codes by determining the order of reading the product codes in advance. However, the product location information specified here only identifies the product displayed in the same product display shelf, and in the technology for acquiring the information on the display position of the product in the product display shelf. Absent. Of course, it is not possible to obtain information about the number of items displayed on the item display shelf. In addition, for example, when there is a change in the displayed product on the product display shelf or a change in the product display position in the product display shelf, even if this is a change of one product, the product code on the product display shelf Has to be read again in a predetermined order, and there is a problem that workability is very poor.

  The present invention has been made on the basis of the above problem recognition, and automatically records position information in a specific direction of the information display means, for example, information display means, without previously recording the position information of the information display means. It is an object of the present invention to provide a position information acquisition device and a position information acquisition method that can acquire information on the height at which the camera is installed.

  In order to solve the above-described problem, the position information acquisition apparatus of the present invention includes an information detection unit that detects identification information used for identification of an information display unit that displays information for identifying an article, and a preset first Based on the coordinate detection means for detecting the coordinates when the identification information is detected by the information detection means for the reference coordinates, the first reference coordinates, and the coordinates detected by the coordinate detection means, the information A position information calculation unit that calculates position information when the identification information is detected by the detection unit, and a case in which the identification information calculated by the position information calculation unit is detected based on predetermined known information. And position information correction means for correcting position information in a specific direction.

  In addition, the information detection means of the present invention further detects first coordinate identification information from an object arranged at a predetermined first location, and second coordinates from the object arranged at a predetermined second location. Identification information is detected, and the coordinate detection means further sets absolute coordinates previously associated with the first coordinate identification information detected by the information detection means as the first reference coordinates, and the position The information correction means sets, as the second reference coordinates, absolute coordinates previously associated with the second coordinate identification information detected by the information detection means, and the set second reference coordinates, Based on the difference from the coordinates when the coordinate detection unit detects the second coordinate identification information, it is determined whether or not the position information correction unit corrects the position information in a specific direction. And

  Further, the coordinate detection means of the present invention includes an acceleration sensor that detects an acceleration when the position information acquisition device moves, and an angle sensor that detects an angle when the direction of the position information acquisition device changes. An acceleration detection value output from the acceleration sensor when the first reference coordinates are set, and an angle detection value output from the angle sensor are initialized, and the information detection means performs the identification. Based on the detected acceleration value from the acceleration sensor and the detected angle value from the angle sensor output until the information is detected, the identification information is obtained from the time when the first reference coordinate is set. The movement distance of the position information acquisition apparatus until the time of detection is calculated, and the coordinates when the position information acquisition apparatus detects the identification information are calculated based on the calculated movement distance. It is calculated as relative coordinates with respect to level coordinate, characterized in that.

  Further, the acceleration sensor of the present invention detects triaxial acceleration and outputs detection values of the detected triaxial acceleration, and the angle sensor detects triaxial angles, The detected values of the detected three-axis angles are output, and the coordinate detecting means outputs the three-axis accelerations output from the acceleration sensor based on the detected three-axis angle values output from the angle sensor. The detection value is corrected, and the movement distance of the position information acquisition device is calculated based on the corrected detection value of the triaxial acceleration.

  In addition, the position information correction unit according to the present invention is calculated by the position information calculation unit based on predetermined known height information after the information detection unit detects the second coordinate identification information. The height information when the identification information is detected is corrected, and the depth information when the identification information calculated by the position information calculation unit is detected is corrected based on predetermined known depth information. It is characterized by that.

  In addition, the position information correction unit according to the present invention detects the identification information calculated by the position information calculation unit based on predetermined known height information every time the identification information is detected. The height information is corrected, and the depth information when the identification information calculated by the position information calculation unit is detected is corrected based on predetermined known depth information.

  The position information acquisition apparatus of the present invention further includes display means for displaying the identification information in association with the position information when the identification information corrected by the position information correction means is detected. It is characterized by.

  Further, the information display means of the present invention is an electronic shelf label that displays information for identifying the article, and the information detection means detects device identification information associated with the electronic shelf label as the identification information. It is characterized by.

  In the position information acquisition method according to the present invention, the information detection procedure for detecting the identification information used for the identification of the information display means for displaying the information for identifying the article by the information detection means, and the coordinate detection means are preset. A coordinate detection procedure for detecting coordinates when the identification information is detected by the information detection means with respect to the first reference coordinates, and a position information calculation means are detected by the first reference coordinates and the coordinate detection means. Based on the coordinates, a position information calculation procedure for calculating position information when the identification information is detected by the information detection means, and a position information correction means based on predetermined known information, A position information correction procedure for correcting position information in a specific direction when the identification information calculated by the position information calculation means is detected.

  According to the present invention, there is an effect that the position information in the specific direction of the information display means can be automatically acquired without previously recording the position information of the information display means.

1 is a block diagram illustrating a schematic configuration of a system using a position information acquisition apparatus according to an embodiment of the present invention. It is the block diagram which showed schematic structure of ESL in embodiment of this invention. It is the figure which showed an example of the outline appearance and display of ESL in the embodiment of the present invention. It is the block diagram which showed schematic structure of the portable terminal device in embodiment of this invention. It is the figure which showed schematic structure of the portable terminal device in embodiment of this invention. It is the figure which showed an example of arrangement | positioning and a coordinate of the merchandise display shelf in the store in embodiment of this invention. It is the figure which showed an example of arrangement | positioning of ESL in embodiment of this invention. It is the figure which showed an example of the shelf position coordinate table in embodiment of this invention. It is a figure explaining the method of reading the information of the position of the goods display shelf in embodiment of this invention. It is the flowchart which showed the whole process sequence which acquires the positional information on ESL in embodiment of this invention. It is the flowchart which showed the process sequence which calculates and correct | amends the positional information on ESL in embodiment of this invention. It is the figure which showed an example in the case of acquiring the positional information on ESL in embodiment of this invention. It is a figure explaining the processing method of the sensor detection value of the portable terminal device in embodiment of this invention. It is a figure explaining the method of the correction process of the sensor detection value according to the attitude | position of the portable terminal device in embodiment of this invention. It is a figure explaining the method of the correction process of the sensor detection value according to the attitude | position of the portable terminal device in embodiment of this invention. It is a figure explaining the method of the correction process of the sensor detection value according to the attitude | position of the portable terminal device in embodiment of this invention. It is the figure which showed an example in the case of correct | amending the movement distance of a portable terminal device in embodiment of this invention. It is the figure which showed an example in the case of correct | amending the movement distance of a portable terminal device in embodiment of this invention. It is the figure which showed an example in the case of correct | amending the positional information on ESL in embodiment of this invention. It is the figure which showed an example in the case of correct | amending the positional information on ESL in embodiment of this invention. It is the figure which showed an example in the case of correct | amending the positional information on ESL in embodiment of this invention. It is the flowchart which showed the whole process sequence which correct | amends, when the positional information on ESL is acquired in embodiment of this invention. It is a figure explaining an example in the case of link | linking the positional information on ESL, and the information of goods in embodiment of this invention. It is the flowchart which showed the process sequence which acquires ESL and the information of goods in embodiment of this invention. It is the figure which showed an example of the goods link information table and position information display screen in embodiment of this invention.

<First Embodiment>
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a store system including an electronic shelf label system using the position information acquisition apparatus according to the present embodiment. In FIG. 1, the store system 1 includes an in-store system 10 and a backyard system 20.

  The backyard system 20 is a product management system that manages the inventory, price, and the like of products that are displayed and sold in the store in the store's backyard. The backyard system 20 includes a store server 200 that manages the inventory and price of products sold in the store, and an electronic shelf label management server 210 that manages display of the price of the products sold in the store. .

  The in-store system 10 is an in-store system displaying products to be sold. The in-store system 10 includes a point-of-sale (POS) system register (hereinafter referred to as “POS register”) 100 that manages information on purchased products, a wireless LAN access point 110, a repeater 120, an ESL 130, The portable terminal device 140 and the shelf barcode device 150 are configured.

  In the store system 1 shown in FIG. 1, the store server 200 of the backyard system 20 and the POS register 100 of the in-store system 10 are connected by connection means such as a network. The store server 200 and the POS register 100 manage product sales data by transmitting data to each other via this connection means. For example, when a product is purchased, the POS cash register 100 transmits product information such as a product code (bar code) of the purchased product to the store server 200. The store server 200 transmits product price information such as the price of the product to the POS register 100 based on the product information received from the POS register 100. The POS cash register 100 displays the price of the product based on the product price information received from the store server 200, and displays the total price with the price of other purchased products. Note that data transmission between the POS cash register 100 and the store server 200 is not directly related to the present invention, and thus detailed description thereof is omitted. Further, in the present invention, there is no provision regarding a method for selling products at a store such as the configuration of the POS cash register 100 or the store server 200.

  The electronic shelf label management server 210 manages display of the ESL 130 and position information of the ESL 130 in the store. The electronic shelf label management server 210 is connected to the store server 200 by connection means such as a network. The electronic shelf label management server 210 is connected to the wireless LAN access point 110 of the in-store system 10 by a connection means such as a network. The electronic shelf label management server 210 transmits the product information recorded in the store server 200 to the wireless LAN access point 110 of the in-store system 10 via this connection means. In addition, the data request from the in-store system 10 transmitted via the wireless LAN access point 110 is transmitted to the store server 200. Moreover, the data regarding the positional information on the ESL 130 sent from the in-store system 10 is recorded. In the present invention, the communication method between the electronic shelf label management server 210 and the store server 200 or the wireless LAN access point 110 is not defined. FIG. 1 shows an example in which the electronic shelf label management server 210 and the store server 200 are configured as separate servers. However, the electronic shelf label management server 210 and the store server 200 are configured as the same server. These can be different functions that operate on the same server.

  The wireless LAN access point 110 is connected to a repeater 120 disposed in the store by wireless communication means such as a wireless LAN. The wireless LAN access point 110 transmits the product information transmitted from the electronic shelf label management server 210 to each repeater 120. The wireless LAN access point 110 receives a data request transmitted from each repeater 120 and transmits it to the electronic shelf label management server 210. FIG. 1 shows an example in which one wireless LAN access point 110 is placed in a store and communicates with two repeaters 120. A plurality of wireless LAN access points 110 may be arranged in the store. Further, in the present invention, there is no regulation regarding a communication method between the wireless LAN access point 110 and the repeater 120 or the electronic shelf label management server 210.

  The repeater 120 is connected to the ESL 130 disposed in the store and the mobile terminal device 140 carried by the store clerk (employee) of the store by wireless communication means such as a wireless LAN. The repeater 120 transfers the transmission data transmitted from the wireless LAN access point 110 to the ESL 130 and the mobile terminal device 140 within the communication range. Further, the repeater 120 receives a data request transmitted from the ESL 130 or the mobile terminal device 140 and transfers it to the wireless LAN access point 110. In addition, for example, when the communication range of the wireless LAN access point 110 covers all areas in the store, depending on the communication range of the wireless LAN access point 110, the in-store system 10 may be configured without installing the repeater 120. You can also. Further, a plurality of repeaters 120 may be arranged in the store according to the communication range of the wireless communication. FIG. 1 shows an example in which two repeaters 120 are arranged in a store and each repeater 120 communicates with two ESLs 130. In the present invention, the communication method between the repeater 120 and the ESL 130 or the mobile terminal device 140 is not defined.

  The ESL 130 is an information display device including a display unit that displays product information such as the price of a product displayed on a product display shelf (not shown) disposed in the store. In the ESL 130, the product information displayed on the display unit of the ESL 130 is changed based on the transmission data transmitted from the repeater 120. FIG. 1 shows an example in which one repeater 120 and two ESLs 130 communicate with each other, but the present invention does not define the number of ESLs 130 that communicate with one repeater 120. Also, there is no provision regarding the communication method between the repeater 120 and the ESL 130. The configuration of the ESL 130 will be described later.

The mobile terminal device 140 is a position information acquisition device of the present invention that can be carried by a store clerk and confirmed by the store clerk by communicating with the repeater 120. When the store clerk operates the portable terminal device 140, the barcode reading unit provided in the portable terminal device 140 reads the shelf label code (barcode) given to the ESL 130 individually. Information on the shelf label code read by the mobile terminal device 140 is transmitted to the electronic shelf label management server 210 via the repeater 120 and the wireless LAN access point 110. Upon receiving the shelf label code, the electronic shelf label management server 210 transmits information on the product linked to the shelf label code to the mobile terminal device 140 via the wireless LAN access point 110 and the repeater 120. The mobile terminal device 140 that has received the product information displays the received product information on a display unit included in the mobile terminal device 140. In this way, the store clerk can check the information on the product displayed on the mobile terminal device 140.
In the store system 1 of this embodiment, the electronic shelf label management server 210, the wireless LAN access point 110, the repeater 120, the ESL 130, and the mobile terminal device 140 constitute an electronic shelf label system. The configuration of the mobile terminal device 140 will be described later.

  Further, when acquiring the position information of the ESL 130, the mobile terminal device 140 reads the shelf position identification information individually given to the shelf barcode device 150 by the operation of the store clerk, and the read shelf position identification information is The information is transmitted to the electronic shelf label management server 210 in the same manner as the shelf label code information of the ESL 130. A method for acquiring the position information of the ESL 130 based on the transmitted shelf position identification information will be described later.

  The shelf barcode device 150 is installed, for example, at the same height as the uppermost shelf of the product display shelf installed in the store and at the same height as the lowermost shelf. The shelf barcode device 150 installed at the same height as the uppermost shelf of the product display shelf is a starting point of the product display shelf used when the mobile terminal device 140 starts to acquire the position information of the ESL 130. This is a tag that displays the reference position. The shelf barcode device 150 installed at the same height as the lowest shelf of the product display shelf is a product display shelf used when the mobile terminal device 140 ends the acquisition of the position information of the ESL 130. This is a tag that displays the reference position of the end point. In the following description, when each shelf barcode device 150 installed at the reference position of the start point and the end point is represented separately, the shelf barcode device 150 installed at the reference position of the start point is referred to as the start shelf shelf barcode device. The shelf bar code device 150 installed at the reference position of the end point is referred to as 150-1 and is referred to as the end point shelf bar code device 150-2.

  The shelf barcode device 150 displays individually assigned shelf position identification information, and this shelf position identification information is associated with information (absolute coordinates) of the installation position of the shelf barcode device 150 in the store. ing. When the store clerk acquires the position information of the ESL 130, the store clerk first reads the shelf position identification information displayed on the start point shelf barcode device 150-1 by the barcode reading unit provided in the portable terminal device 140, thereby Information on the position where the start point shelf barcode device 150-1 is installed is acquired. Thereafter, the store clerk reads the shelf label code of the ESL 130 whose position information is to be acquired. Finally, the store clerk reads the shelf position identification information displayed on the end point shelf barcode device 150-2 by the barcode reading unit provided in the mobile terminal device 140, and the end point shelf barcode device 150-2 is installed. The information on the position of the ESL 130 is acquired, and the acquisition of the position information of the ESL 130 is terminated. Thereby, the electronic shelf label management server 210 can acquire information on absolute coordinates in the store of the product display shelf in which the start point shelf barcode device 150-1 and the end point shelf barcode device 150-2 are installed. In FIG. 1, the start point shelf barcode device 150-1 and the end point shelf barcode device 150-2 installed on the product display shelf are used when acquiring the position information of the ESL 130 surrounded by a two-dot chain line. An example of the reference position and the reference position of the end point is shown. The configuration of the start point shelf barcode device 150-1 and the end point shelf barcode device 150-2 will be described later.

  Next, the electronic shelf label of the electronic shelf label system in the store system 1 of the present embodiment will be described. FIG. 2 is a block diagram showing a schematic configuration of the ESL 130 in the present embodiment. 2, the ESL 130 includes a CPU (Central Processing Unit) 131, a memory 132, an LCD (Liquid Crystal Display) display unit 133, and a wireless communication unit 134. The CPU 131, the memory 132, the LCD display unit 133, and the wireless communication unit 134 are connected to each other via a bus in the ESL 130. FIG. 3 is a diagram showing an example of a schematic appearance and display of the ESL 130 in the present embodiment. In FIG. 3, a label of a shelf label code 135 on which individually provided shelf label identification information (barcode) is written is attached to the ESL 130. The shelf label code 135 in the present embodiment is a label on which shelf label identification information (barcode) is described. However, in the present invention, the form of the shelf label code 135 is not specified. For example, the shelf label code 135 can be printed on the ESL 130.

The CPU 131 is a central processing unit that controls the operation of the ESL 130. The CPU 131 controls the operation of the ESL 130 by reading and executing a program stored in the memory 132.
The memory 132 is a semiconductor memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory). The memory 132 is a program executed by the CPU 131, a shelf label code 135 given individually to the ESL 130, or the shelf label code 135. Store the corresponding data. Also, product information such as product name and price displayed on the LCD display unit 133 is stored. The memory 132 is also used as a storage area for temporarily storing data during execution of the program by the CPU 131.
The LCD display unit 133 displays product information such as product names and prices stored in the memory 132. For example, as shown in FIG. 3, product information such as the product manufacturer, product name, content, and price is displayed.
Based on the control from the CPU 131, the wireless communication unit 134 communicates with the repeater 120 and receives product information such as product names and prices displayed on the LCD display unit 133.

  Next, the portable terminal device of the electronic shelf label system in the store system 1 of this embodiment will be described. FIG. 4 is a block diagram illustrating a schematic configuration of the mobile terminal device 140 according to the present embodiment. In FIG. 4, the mobile terminal device 140 includes a CPU 141, a memory 142, an LCD display unit 143, a wireless communication unit 144, a barcode reading unit 145, and a sensor unit 146. The CPU 141, the memory 142, the LCD display unit 143, the wireless communication unit 144, the barcode reading unit 145, and the sensor unit 146 are connected to each other via a bus in the mobile terminal device 140. FIG. 5 is a diagram illustrating an example of a schematic structure of the mobile terminal device 140 in the present embodiment. In FIG. 5, the sensor unit 146 is disposed on the circuit board of the mobile terminal device 140. In addition, the barcode reading unit 145 is disposed at the tip of the mobile terminal device 140. In the present embodiment, the sensor unit 146 is arranged on the circuit board and the barcode reading unit 145 is arranged at the tip of the mobile terminal device 140. However, the sensor unit 146 and the barcode reading unit are shown. The arrangement of 145 is not limited to the arrangement shown in FIG. 5, and may be any arrangement that can realize the functions of the sensor unit 146 and the barcode reading unit 145 described later. Therefore, in the present invention, there is no definition regarding the arrangement of the sensor unit 146 and the barcode reading unit 145.

  The CPU 141 is a central processing unit that controls the operation of the mobile terminal device 140. The CPU 141 controls the operation of the mobile terminal device 140 by reading and executing the program stored in the memory 142.

  The memory 142 is a semiconductor memory such as a ROM or a RAM, and stores a program executed by the CPU 141, the read shelf label code 135 of the ESL 130, and data corresponding to the shelf label code 135. In addition, the memory 142 stores information on the commodity display shelf that is transmitted from the electronic shelf label management server 210 and received by the wireless communication unit 144 when the position information of the ESL 130 is acquired. Further, the product information such as the product name and price received by the wireless communication unit 144, the product management information such as the stock of the product, and the product information notified to the store clerk by being displayed on the LCD display unit 143 are stored. The memory 132 is also used as a storage area for temporarily storing data during execution of the program by the CPU 131.

The LCD display unit 143 displays product information to be notified to the store clerk stored in the memory 142.
Based on the control from the CPU 141, the wireless communication unit 144 communicates with the repeater 120, and transmits information regarding the read shelf label code 135 of the ESL 130. In addition, the wireless communication unit 144 receives product information that is transmitted from the repeater 120 and is displayed on the LCD display unit 143 to inform the store clerk.

The barcode reading unit 145 reads the shelf label code 135 individually given to the ESL 130 or the product code (barcode) given to the product, and relays the read barcode information via the wireless communication unit 144. 120. Further, the barcode information read by the barcode reading unit 145 is also stored in the memory 142.
Further, the barcode reading unit 145 reads the shelf position identification information given individually to the start point shelf barcode device 150-1 and the end point shelf barcode device 150-2 when acquiring the position information of the ESL 130.

  The sensor unit 146 detects the movement of the mobile terminal device 140. The sensor unit 146 includes an acceleration sensor and a gyro sensor (not shown). The acceleration sensor detects acceleration when the mobile terminal device 140 moves, and the gyro sensor detects angular velocity when the mobile terminal device 140 moves.

The CPU 141 of the mobile terminal device 140 calculates the moving distance of the mobile terminal device 140 based on the acceleration and angular velocity of the mobile terminal device 140 detected by the acceleration sensor and the gyro sensor in the sensor unit 146. The CPU 141 calculates position information of the ESL 130 based on the calculated moving distance. The CPU 141 stores the calculated position information in the memory 142 and transmits it to the electronic shelf label management server 210 via the communication unit 144.
A calculation method for calculating the movement distance from the detection value by the acceleration sensor and the gyro sensor will be described later. A method for calculating the position information of the ESL 130 based on the calculated moving distance will also be described later.

Next, the arrangement of ESL stores that acquire position information will be described. FIG. 6 is a diagram showing an example of the arrangement of the merchandise display shelves on which the ESL 130 for obtaining the position information is installed in the store. In the store shown in FIG. 6, merchandise display shelves 300-1 to 300-3 (hereinafter, collectively referred to as “product display shelves 300”) are arranged. Each commodity display shelf 300 is provided with a start point shelf barcode device 150-1 and an end point shelf barcode device 150-2. In FIG. 6, the wireless LAN access point 110, the wireless communication means such as the repeater 120, and the POS register 100 shown in FIG. 1 are not shown because they are not directly related to the present invention.
FIG. 7 is a diagram illustrating an example of the arrangement of the ESL 130 in the merchandise display shelf 300-1. ESL130-1 to ESL130-13 are arranged on the merchandise display shelf 300-1 shown in FIG.

FIG. 6 shows an example of the coordinates of the start point shelf barcode device 150-1 and the end point shelf barcode device 150-2 in the store. FIG. 7 shows an example of coordinates of the start point shelf barcode device 150-1 and the end point shelf barcode device 150-2 in the product display shelf 300-1.
In FIG. 6, the right direction is the X-axis direction, the upward direction is the Y-axis direction, and the vertical direction (front direction in FIG. 6) is the Z-axis direction. In FIG. 7, the right direction is the X-axis direction, the upward direction is the Z-axis direction, and the vertical direction (depth direction in FIG. 7) is the Y-axis direction. The X, Y, and Z axes are used as reference absolute coordinate axes in the store.
6 and 7, the coordinates at the floor surface position of the point A shown in FIG. 6 are the reference coordinates (reference coordinates (X, Y, Z) = (0, 0, 0)). In the following description, absolute coordinates are represented by capital letters “X”, “Y”, and “Z”.

  Further, as shown in FIG. 6, the start point shelf bar code device 150-1 installed in each merchandise display shelf 300 has a start point shelf barcode coordinate indicating the installed position, the distance from the point A, and The absolute coordinates are set according to the height of the stage of the merchandise display shelf 300. For example, the start point shelf barcode coordinates of the start point shelf barcode device 150-1 installed on the commodity display shelf 300-1 are installed with the distances X1, Y1 from the point A and the start point shelf barcode device 150-1. The absolute coordinates (start shelf shelf barcode coordinates (X1, Y1, Z1)) corresponding to the height Z1 of the product display shelf 300-1 are set. In FIG. 6, the relationship between the distances X1 and Y1 from the point A and the start point shelf barcode coordinates can be understood. Further, in FIG. 7, the relationship between the height Z1 of the stage in the product display shelf 300-1 of the start shelf barcode device 150-1 installed in the product display shelf 300-1 and the start shelf barcode coordinates is understood. Can do.

  In addition, as shown in FIG. 6, the end point shelf barcode device 150-2 installed in each commodity display shelf 300 has an end point shelf barcode coordinate indicating the installed position, the distance from the point A, The absolute coordinates are set according to the size of the product display shelf 300 and the height of the stage of the product display shelf 300. For example, the distance X1, Y1 from the point A and the end point shelf bar code unit 150-2 are set in the end point bar code coordinates of the end point bar code unit 150-2 installed in the merchandise display shelf 300-1. The absolute coordinates (end point shelf bar code coordinates (X1 + L, Y1, Z4)) according to L which is the width of the displayed merchandise display shelf 300-1 and Z4 which is the height of the step are set. In FIG. 6, it is possible to understand the relationship among the distances X1 and Y1 from the point A, the width L of the merchandise display shelf 300-1, and the end point shelf barcode coordinates. Further, in FIG. 7, the relationship between the height Z4 of the stage in the product display shelf 300-1 of the end point shelf barcode device 150-2 installed on the product display shelf 300-1 and the end point shelf barcode coordinates is understood. Can do.

  The start point shelf bar code coordinates and the end point shelf bar code coordinates are associated with the shelf position identification information individually given to the start point shelf bar code unit 150-1 and the end point shelf bar code unit 150-2. The position information of the device 150-1 and the end shelf barcode device 150-2 is recorded in the electronic shelf label management server 210 as the shelf position coordinate table together with the management information of the merchandise display shelf 300-1.

Further, as shown in FIG. 7, the absolute value of the commodity display shelf 300-1 on the surface (hereinafter referred to as “surface”) on which the start shelf barcode device 150-1 and the end shelf barcode device 150-2 are installed. The coordinates are set as shelf table coordinates (shelf table coordinates (Xf, Yf, Zf)). The shelf table coordinates are obtained by setting the coordinates of the position of the lower left corner when the surface of the product display shelf 300-1 is viewed from the front as absolute coordinates according to the distance from the point A.
In addition, as shown in FIG. 6, the product display shelf 300 on the surface opposite to the surface on which the start point shelf barcode device 150-1 and the end point shelf barcode device 150-2 are installed (hereinafter referred to as “back surface”). The absolute coordinate of −1 is set as the shelves coordinates (shelf coordinates (Xb, Yb, Zb)). The shelf back coordinates are obtained by setting the coordinates of the position of the upper left corner when the back surface of the product display shelf 300-1 is viewed from the front as absolute coordinates according to the distance from the point A.
The shelf table coordinates and the shelf back coordinates are recorded in the shelf position coordinate table in the electronic shelf label management server 210 in association with the management information of the product display shelf 300-1.

  In addition, regarding the shelf table coordinates and the shelf back coordinates described above, the following can also be performed. For example, coordinates based on a distance corresponding to the size of the commodity display shelf 300-1 can be calculated from the shelf table coordinates and set as shelf back coordinates. Further, for example, when the other start shelf barcode device 150-1 and the end shelf barcode device 150-2 are installed on the back surface of the product display shelf 300-1, the start point shelf on the surface of the product display shelf 300-1 The coordinates in the X-axis direction and the Y-axis direction of the start point shelf barcode coordinates of the barcode device 150-1 and the coordinate in the Z direction of the end point shelf barcode coordinates of the end point shelf barcode device 150-2 are set as shelf table coordinates. . In addition, the X-axis and Y-axis coordinates of the start-point shelf barcode coordinates of the start-point shelf barcode device 150-1 on the back surface of the commodity display shelf 300-1, and the end-point shelf barcode of the end-point shelf barcode device 150-2. The coordinates in the Z direction of the coordinates are set as the back shelf coordinates. Thus, it can be set as the structure used instead of a shelf table coordinate and a shelf back coordinate.

  FIG. 8 is a diagram showing an example of the shelf position coordinate table recorded in the electronic shelf label management server 210 in the present embodiment. The shelf position coordinate table shown in FIG. 8 is installed on the product display shelf 300, the shelf size that is management information of the product display shelf 300, the shelf table coordinates and the shelf back coordinates that are absolute coordinates of the product display shelf 300, and the product display shelf 300. The start point shelf bar code unit 150-1 and the end point shelf bar code unit 150-2 and the end point shelf bar code coordinate of the end point shelf bar code unit 150-2 and the height information of the product display shelf 300 are stored in the product display shelf 300. It is an associated information table.

  Next, a method for reading the shelf position identification information will be described. FIG. 9 is a diagram for explaining a method of reading information on absolute coordinates of a merchandise display shelf in the store by the mobile terminal device 140 of the present embodiment. FIG. 9A shows an example of a schematic structure of the shelf barcode device 150, and FIG. 9B shows an example of a schematic structure of the distal end portion of the mobile terminal device 140 that reads the barcode. FIG. 9C shows a method for reading the shelf position identification information displayed on the shelf barcode device 150 by the mobile terminal device 140.

As shown in FIG. 9A, the shelf barcode 151 in which the shelf position identification information (barcode) individually given to the shelf barcode device 150 is described in the central portion of the shelf barcode device 150. The label is affixed. The shelf barcode 151 may include identification information that associates the start shelf barcode device 150-1 and the end shelf barcode device 150-2 installed on the same product display shelf. In addition, the shelf barcode 151 in the present embodiment is a label on which shelf position identification information (barcode) is described. However, in the present invention, the form of the shelf barcode 151 is not defined. For example, the shelf barcode 151 can be printed on the shelf barcode device 150.
As shown in FIG. 9A, the left and right ends of the shelf barcode device 150 are provided with a fitting portion 152 and a fitting portion 153. The fitting portion 152 and the fitting portion 153 have, for example, a convex shape, and the position when the shelf barcode 151 is read is always a fixed position together with the structure of the distal end portion of the mobile terminal device 140 described later. To suit.

As shown in FIG. 9B, a barcode reading unit 145 is disposed at the center of the tip of the mobile terminal device 140, and the shelf barcode 151 attached to the shelf barcode device 150. Read.
Further, as shown in FIG. 9B, a fitting part 147 and a fitting part 148 are provided at the left and right ends of the distal end part of the mobile terminal device 140. The fitting portion 147 and the fitting portion 148 have a concave shape, for example, and when the shelf barcode 151 is read together with the structure of the fitting portion 152 and the fitting portion 153 of the shelf barcode device 150. The position is always adjusted to a certain position.

  When reading the shelf barcode 151 attached to the shelf barcode device 150 by the portable terminal device 140, as shown in FIG. 9C, the fitting portion 152 and the fitting portion 153 of the shelf barcode device 150 are provided. And the fitting part 147 and the fitting part 148 of the portable terminal device 140 are fitted. Thereby, the attitude | position of the portable terminal device 140 when the barcode reading part 145 in the portable terminal device 140 reads the shelf barcode 151 can always be kept constant.

  Further, when the barcode reading unit 145 reads the shelf barcode 151 attached to the start point shelf barcode device 150-1 (hereinafter referred to as “start point shelf barcode 151-1”), the mobile terminal device 140 The acceleration value output from the acceleration sensor in the sensor unit 146 and the angular velocity value output from the gyro sensor are initialized. Thereafter, the mobile terminal device 140 calculates the position information of the ESL 130 based on the acceleration and the angular velocity when the shelf label code 135 is read in order to acquire the position information of the ESL 130. It should be noted that the acceleration and angular velocity when the barcode reading unit 145 reads the shelf barcode 151 are set as initial values, and the initial value and the acceleration and angular velocity when the portable terminal device 140 reads the shelf label code 135 thereafter are The position information of the ESL 130 can be calculated based on the above. Finally, based on the acceleration and angular velocity when the barcode reading unit 145 reads the shelf barcode 151 (hereinafter referred to as “endpoint shelf barcode 151-2”) attached to the end point shelf barcode device 150-2. Then, the position information of the end point shelf barcode device 150-2 is calculated. Then, the position information of the ESL 130 calculated so far is corrected. A method for correcting the position information of the ESL 130 based on the position information of the end point shelf barcode device 150-2 will be described later.

Further, when the shelf barcode device 150 is installed on the commodity display shelf 300, the x axis, the y axis, and the z axis that are the detection axes of the acceleration sensor and the gyro sensor shown in FIG. It is desirable that the X axis, the Y axis, and the Z axis that are coordinate axes are in the same direction. Thereby, the relative relationship in the axial direction of the relative coordinates (x, y, z) of the acceleration sensor and the gyro sensor with respect to the axial direction of the reference coordinates (X, Y, Z) can be fixed in a certain direction. In the following description, relative coordinates are represented by lowercase letters “x”, “y”, and “z”.
In the following description of the present embodiment, the sensor detection axis (x axis, y axis, and z axis) and the reference absolute coordinate axis (X axis, Y axis, and Z axis) are assumed to be in the same direction. I do.

  In FIG. 9, as a method for keeping the posture of the mobile terminal device 140 always constant, the convex fitting portion 152 and the fitting portion 153 provided in the shelf barcode device 150 and the concave shape provided in the mobile terminal device 140. Although the method of fitting the fitting part 147 and the fitting part 148 is shown, the present invention does not define a method for keeping the posture of the mobile terminal device 140 constant. For example, permanent magnets are provided at the positions of the fitting portion 152 and the fitting portion 153 included in the shelf barcode device 150 and the positions of the fitting portion 147 and the fitting portion 148 included in the mobile terminal device 140, and the shelf bar When the cord device 150 and the mobile terminal device 140 approach each other, the shelf bar code device 150 and the mobile terminal device 140 are brought into contact with each other using the force with which the respective permanent magnets are attracted, whereby the attitude of the mobile terminal device 140 is It can also be set as the structure which keeps constant.

  Next, a method for acquiring position information of the ESL 130 will be described. FIG. 10 is a flowchart showing an overall processing procedure for acquiring the position information of the ESL 130 in the mobile terminal device 140 of this embodiment. FIG. 11 is a flowchart showing a processing procedure for calculating and correcting the position information of the ESL 130 by the mobile terminal device 140 of the present embodiment. FIG. 12 is a diagram illustrating an example in which the position information of the ESL 130 is acquired in the arrangement of the ESL 130 of the commodity display shelf 300-1 illustrated in FIG.

The overall processing procedure for acquiring the position information of the ESL 130 is as follows.
First, in step S100, the mobile terminal device 140 checks whether or not the position acquisition mode is selected as the operation mode. If the position acquisition mode is selected, the process proceeds to step S110. Note that the selection of the operation mode of the mobile terminal device 140 is performed by the operation of a store clerk carrying the mobile terminal device 140, but in the present invention, the rules regarding the method of selecting the operation mode of the mobile terminal device 140 I do not.

  If the position acquisition mode is not selected in step S100, step S100 is repeated. When the position acquisition mode is not selected as the operation mode of the mobile terminal device 140, the mobile terminal device 140 performs an operation in an operation mode other than the position acquisition mode. However, in the present invention, the operation other than the position acquisition mode is performed. There is no provision for. Further, the process transition to step S100 during the operation other than the position acquisition mode repeats step S100 by executing step S100 at a predetermined time interval during the operation other than the position acquisition mode, for example. In the present invention, the transition to the process to step S100 during the operation other than the position acquisition mode is not specified.

  In step S <b> 110, the mobile terminal device 140 determines whether or not the start point shelf barcode 151-1 attached to the start point shelf barcode device 150-1 has been read by the barcode reading unit 145 in the mobile terminal device 140. Check. When the start point shelf barcode 151-1 is read, the process proceeds to step S120.

  In step S110, if the start point shelf barcode 151-1 has not been read, step S110 is repeated. Note that the repetition of step S110 can be a process of repeating step S110, for example, by executing step S110 at a predetermined time interval. Further, for example, as shown in FIG. 9C, the fitting portion 152 and the fitting portion 153 of the start point shelf barcode device 150-1, the fitting portion 147 and the fitting portion 148 of the mobile terminal device 140, When it is detected that the attitude of the mobile terminal device 140 is kept constant by fitting, the start shelf shelf barcode 151-1 is operated by a store clerk with the attitude of the mobile terminal device 140 kept constant. When reading is instructed, it is also possible to confirm the reading of the start point shelf barcode 151-1 in step S110. In the present invention, there is no definition regarding the repetitive processing in step S110. Further, there is no provision for a method for instructing reading of the start point shelf barcode 151-1 by the operation of the store clerk.

  In step S120, the portable terminal device 140 initializes the output value of the sensor unit 146 when the start point shelf barcode 151-1 is read. More specifically, the integrated value of the acceleration value output from the acceleration sensor in the sensor unit 146, the integrated value of the angular velocity value output from the gyro sensor, and the detection time by the acceleration sensor and the gyro sensor are set to “0”. Clear to “”. In step S120, the mobile terminal device 140 acquires the shelf information of the product display shelf 300 on which the read start shelf barcode device 150-1 is installed from the electronic shelf label management server 210. More specifically, information on the shelf position coordinate table shown in FIG. 8 recorded in the electronic shelf label management server 210 is acquired and stored in the memory 142 in the portable terminal device 140. Thereafter, in step S120, the mobile terminal device 140 starts detection by the sensor unit 146, and integrates the acceleration value output from the acceleration sensor and the angular velocity value output from the gyro sensor. The reading of the start point shelf barcode 151-1 by the mobile terminal device 140 is performed by the operation of a store clerk carrying the mobile terminal device 140. In the present invention, the start point shelf barcode in the mobile terminal device 140 is used. There are no rules regarding the operation method for reading 151-1.

  After the detection by the sensor unit 146 is started in step S120, in step S130, the portable terminal device 140 has read the shelf label code 135 attached to the ESL 130 by the barcode reading unit 145 in the portable terminal device 140. Confirm whether or not. If the shelf label code 135 has been read, the process proceeds to step S140. In step S140, the mobile terminal device 140 calculates the position information of the ESL 130 based on the output value of the sensor unit 146 when the shelf label code 135 is read, and the calculation result is stored in the mobile terminal device 140. Stored in the memory 142. Note that the reading of the shelf label code 135 by the portable terminal device 140 is performed by the operation of a store clerk carrying the portable terminal device 140. In the present invention, the reading of the shelf label code 135 by the portable terminal device 140 is performed. There is no provision for the operation method.

  If the shelf label code 135 has not been read in step S130, step S130 is repeated. Note that the repetition of step S130 can be a process of repeating step S130, for example, by executing step S130 at a predetermined time interval. Further, for example, when the reading of the shelf label code 135 is instructed by the operation of the mobile terminal device 140 by the store clerk, the process of confirming the reading of the shelf label code 135 in step S130 may be performed. In the present invention, there is no definition regarding the repetitive processing in step S130. Further, there is no regulation regarding the instruction method for reading the shelf label code 135 by the operation of the store clerk.

  In step S <b> 150, the mobile terminal device 140 confirms whether to read the shelf label code 135 of the next ESL 130. When reading the next shelf label code 135, the process returns to step S130, and reading of the shelf label code 135, calculation of position information of the ESL 130, and storage of the calculated position information of the ESL 130 are repeated. If the next shelf label code 135 is not read, the process proceeds to step S160.

  In step S160, the mobile terminal device 140 determines whether or not the end point shelf barcode 151-2 pasted on the end point shelf barcode device 150-2 has been read by the barcode reading unit 145 in the mobile terminal device 140. Check. If the end shelf barcode 151-2 is read, the process proceeds to step S170.

  In step S160, if the end point shelf barcode 151-2 has not been read, step S160 is repeated. Note that the repetition of step S160 may be a process of repeating step S160, for example, by executing step S160 at a predetermined time interval. Further, for example, as shown in FIG. 9C, the fitting portion 152 and the fitting portion 153 of the end point shelf barcode device 150-2, the fitting portion 147 and the fitting portion 148 of the mobile terminal device 140, The end point shelf barcode 151-2 is detected by the operation of a store clerk when it is detected that the posture of the mobile terminal device 140 is kept constant by fitting, or while the posture of the mobile terminal device 140 is kept constant. It is also possible to confirm the reading of the end point shelf barcode 151-2 in step S160 when the reading of is instructed. In the present invention, there is no definition regarding the repetitive processing in step S160. Further, there is no provision regarding a method for instructing reading of the end point shelf barcode 151-2 by the operation of the store clerk.

  In step S170, the mobile terminal device 140 calculates the position information of the end point shelf barcode device 150-2 based on the output value of the sensor unit 146 when the end point shelf barcode 151-2 is read, Based on the calculation result, the absolute coordinates of the end point shelf barcode 151-2 are calculated and stored in the memory 142 in the mobile terminal device 140. In step S170, the mobile terminal device 140 determines the difference between the end point shelf barcode coordinates included in the shelf information acquired from the electronic shelf label management server 210 and the calculated absolute coordinates of the end point shelf barcode device 150-2. Based on this, the difference (variation amount) in the position information of the end point shelf barcode device 150-2 is calculated. When the calculated position information of the end point shelf barcode device 150-2 is within a predetermined difference (tolerance), the ESL 130 stored in the memory 142 in the portable terminal device 140 so far is stored. The position information is corrected based on information on the merchandise display shelf 300 included in the shelf information acquired from the electronic shelf label management server 210. The reading of the end point shelf barcode 151-2 by the mobile terminal device 140 is performed by the operation of a store clerk carrying the mobile terminal device 140. In the present invention, the end point shelf bar code in the mobile terminal device 140 is used. There are no rules regarding the operation method for reading 151-2.

  In step S170, the mobile terminal device 140 corrects the position information of the ESL 130. In step S180, the mobile terminal device 140 displays the corrected position information of the ESL 130 and the read information on the shelf label code 135 on the electronic shelf label management server. To 210.

  The processing procedure for calculating and correcting the position information of the ESL 130 is as follows. Since a specific method for calculating and correcting the position information of the ESL 130 will be described later, only the processing flow when calculating and correcting the position information of the ESL 130 will be described here.

First, in step S200, the CPU 141 in the mobile terminal device 140 moves the mobile terminal device 140 based on the acceleration value output by the acceleration sensor in the sensor unit 146 and the angular velocity value output by the gyro sensor. Attitude change information is calculated.
Subsequently, in step S210, the CPU 141 calculates an acceleration component when the mobile terminal device 140 moves, based on the calculated posture change information.
Subsequently, in step S220, the CPU 141 calculates the movement distance of the mobile terminal device 140 based on the calculated acceleration component.
The processing so far is performed every time the shelf label code 135 is read in the stage before the end point shelf barcode 151-2 is read, that is, in steps S130 to S150 shown in FIG.

Thereafter, in the stage after the end point shelf barcode 151-2 is read, that is, in steps S160 to S170 shown in FIG.
In step S230, the CPU 141 calculates a difference in position information of the end point shelf barcode device 150-2. When the calculated position information difference of the end point shelf barcode device 150-2 is within a predetermined difference (tolerance), the height data and the depth of the calculated movement distance of the mobile terminal device 140 are calculated. Correct the data.
Subsequently, in step S240, based on the corrected travel distance, the CPU 141 reads the relative coordinates when the mobile terminal device 140 reads the shelf label code 135 attached to the ESL 130, that is, the ESL 130 is in the product display shelf 300. Calculate the coordinates of the location.

  Thus, the relative coordinates of the position of the ESL 130 are calculated based on the detection values of the acceleration sensor and the gyro sensor. Then, the electronic shelf label management server 210 that has received the relative coordinates of the ESL 130 from the mobile terminal device 140, in the product display shelf 300 in which the start point shelf barcode device 150-1 and the end point shelf barcode device 150-2 are installed, Information on the level of the product display shelf 300 where the ESL 130 is arranged can be obtained.

  Note that the calculation of the coordinates of the ESL 130 in step S240 in FIG. 11 has been described with the configuration performed by the CPU 141 in the mobile terminal device 140. The CPU 141 can be configured to transmit the calculated movement distance of the mobile terminal device 140 to the electronic shelf label management server 210. In this case, the mobile terminal device 140 reads the start point shelf barcode 151-1 attached to the start point shelf barcode device 150-1 and then the end point shelf attached to the end point shelf barcode device 150-2. The moving distance of the portable terminal device 140 until the barcode 151-2 is read is transmitted to the electronic shelf label management server 210. Then, the electronic shelf label management server 210 calculates the difference (variation amount) in the position information of the end point shelf barcode device 150-2 based on the received movement distance of the mobile terminal device 140, and the calculated end point shelf bar. Based on the difference in the position information of the code device 150-2, information on the level of the product display shelf 300 where the ESL 130 is arranged is calculated.

Here, an example in the case of acquiring ESL130 position information is demonstrated using FIG. FIG. 12 shows an example of acquiring position information of the ESL 130-5.
After the detection by the sensor unit 146 is started in step S120 shown in FIG. 10, the store clerk moves the mobile terminal device 140 to the ESL 130-5 along the movement locus B1 shown in FIG. The attached shelf label code 135 is read. The movement distance of the mobile terminal device 140 to the ESL 130-5 at this time is based on the detection values of the acceleration sensor and the gyro sensor, XE5 in the X-axis direction, YE5 (not shown) in the Y-axis direction, and Z-axis. ZE5 is calculated in the negative direction. Then, based on the calculated moving distance, the relative coordinates of ESL130-5 (ESL130-5 relative coordinates = (XE5, YE5, −ZE5)) can be obtained.

  Further, based on the start point shelf barcode coordinates (X1, Y1, Z1) and the ESL130-5 relative coordinates = (XE5, YE5, −ZE5), the absolute coordinates of ESL130-5 (ESL130-5 absolute coordinates = (X1 + XE5) Y1 + YE5, Z1-ZE5)) can be obtained.

  Thereafter, the store clerk moves the mobile terminal device 140 to the end shelf bar code device 150-2 by following the movement path B2 shown in FIG. 12, and the end point shelf bar attached to the end point shelf bar code device 150-2. Read the code 151-2. The moving distance of the mobile terminal device 140 to the ESL 130-5 at this time is calculated based on detection values of the acceleration sensor and the gyro sensor. Then, the relative coordinates of the end point shelf barcode device 150-2 can be obtained based on the calculated movement distance.

  Then, based on the relative coordinates of the obtained end shelf barcode device 150-2 and the start point shelf barcode coordinates of the start point shelf barcode device 150-1 included in the shelf information acquired from the electronic shelf label management server 210. The absolute coordinates of the end point shelf barcode device 150-2 are calculated. Then, a difference (error) between the absolute coordinates of the calculated end shelf barcode device 150-2 and the end shelf barcode code coordinates of the end shelf barcode device 150-2 included in the shelf information acquired from the electronic shelf label management server 210. Component). When the calculated absolute coordinate difference of the end point shelf barcode device 150-2 is within a predetermined difference (tolerance), the mobile terminal device 140 stores the memory in the mobile terminal device 140 so far. The relative coordinates and absolute coordinates of the ESL 130-5 stored in 142 are corrected.

  When the calculated absolute coordinate difference of the end point shelf barcode device 150-2 is greater than or equal to a predetermined difference (tolerance), it is determined that the acquisition of the position information of the ESL 130-5 has failed, and the mobile phone An error display may be made on the LCD display unit 143 of the terminal device 140. Further, when the corrected absolute coordinates of the ESL 130-5 are equal to or larger than a predetermined tolerance of a range in which products can be displayed on the product display shelf 300-1 (product display range), the position of the ESL 130-5 A configuration may be adopted in which it is determined that information acquisition has failed and an error is displayed on the LCD display unit 143 of the mobile terminal device 140. The product display range described above is the shelf table coordinates that are the start point shelf barcode coordinates and the end point shelf barcode coordinates included in the shelf information acquired from the electronic shelf label management server 210, or the absolute coordinates of the product display shelf 300-1. And can be calculated from the shelves coordinates. In this invention, it does not prescribe | regulate regarding the calculation method of a goods display range.

  Next, a method for calculating the movement distance of the mobile terminal device 140 will be described. FIG. 13 is a diagram for explaining a detection value processing method by the sensor unit 146. FIG. 13A shows a method for processing the acceleration value output from the acceleration sensor in the sensor unit 146, and FIG. 13B shows a method for processing the angular velocity value output by the gyro sensor in the sensor unit 146. Show. 14 to 16 are diagrams illustrating a method for correcting the detection value of the sensor unit 146 detected according to the attitude of the mobile terminal device 140.

The moving distance of the mobile terminal device 140 can be obtained by processing the acceleration value output by the acceleration sensor in the sensor unit 146.
As shown in FIG. 13A, when the store clerk moves the mobile terminal device 140, the acceleration sensor in the sensor unit 146 causes the acceleration a (t) [m / sec ² ] accompanying the movement of the mobile terminal device 140. ] Value is output. A velocity v (t) [m / sec] is obtained by integrating the acceleration a (t) once at time t. Further, the distance k (t) [m] can be obtained by integrating the velocity v (t) once at time t. This distance k (t) is the moving distance of the mobile terminal device 140.

  However, in order to obtain the moving distance as shown in FIG. 13A, it is necessary to subtract the gravitational acceleration in consideration of the gravitational acceleration applied to the mobile terminal device 140. Moreover, since the value of the gravitational acceleration differs depending on the posture of the mobile terminal device 140, it is necessary to detect a change in the posture of the mobile terminal device 140.

The change in the attitude of the mobile terminal device 140 can be obtained by processing the value of the angular velocity output from the gyro sensor in the sensor unit 146.
As shown in FIG. 13B, when the store clerk moves the mobile terminal device 140, the gyro sensor in the sensor unit 146 causes the angular velocity Ω (t) [deg / sec] accompanying the movement of the mobile terminal device 140. The value of is output. By integrating the angular velocity Ω (t) once at time t, an angle θ (t) [deg] on the axis shown in FIG. 13C is obtained. This angle θ (t) is the movement angle of the mobile terminal device 140.

And based on this movement angle, the gravitational acceleration concerning each axial direction of the portable terminal device 140 is calculated.
As shown in FIG. 14 (a), a gravitational acceleration ag of 1.0 G is always applied in the Z-axis direction of the mobile terminal device 140, and the acceleration sensor in the sensor unit 146 has a gravitational acceleration ag in the z-axis direction. Is detected. This state is an initial posture when the barcode reading unit 145 in the mobile terminal device 140 reads the starting point shelf barcode 151-1 attached to the starting point shelf barcode device 150-1. This initial posture is also the last posture when reading the end point shelf barcode 151-2 attached to the end point shelf barcode device 150-2.

For example, a rotation around the X axis as shown in FIG. 14B is accompanied by a hand shake when the store clerk moves the mobile terminal device 140 in order to acquire the position information of the ESL 130 from this initial posture. If there is, the posture of the mobile terminal device 140 is as shown in FIG. At this time, the gravitational acceleration ag detected by the acceleration sensor in the sensor unit 146 includes the following gravitational acceleration component az in the z-axis direction and gravitational acceleration in the y-axis direction according to the rotation angle θx around the X axis. The component agy is detected separately.
z-axis direction: agz = ag × cos θx
y-axis direction: agy = ag × sin θx

Further, as shown in FIG. 15A, from the initial posture in which the acceleration sensor in the sensor unit 146 detects the gravitational acceleration ag in the z-axis direction, for example, with the movement of the mobile terminal device 140 by the store clerk, When there is a rotation around the Y axis as shown in FIG. 15B, the attitude of the mobile terminal device 140 is as shown in FIG. 15C. At this time, the gravitational acceleration ag detected by the acceleration sensor in the sensor unit 146 includes the following gravitational acceleration component az in the z-axis direction and gravitational acceleration in the x-axis direction according to the rotation angle θy about the Y axis. The component agx is detected separately.
z-axis direction: agz = ag × cos θy
x-axis direction: agx = ag × sin θy

  Further, from the attitude of the mobile terminal device 140 as shown in FIG. 16A, for example, rotation around the Z-axis as shown in FIG. If there is, the posture of the mobile terminal device 140 is as shown in FIG. At this time, the acceleration a detected by the acceleration sensor in the sensor unit 146 is detected separately as an acceleration component ax in the x-axis direction and an acceleration component ay in the y-axis direction. The acceleration component ax in the x-axis direction and the acceleration component ay in the y-axis direction are different from the X-axis and Y-axis that are reference absolute coordinate axes in the store. Therefore, as shown in FIG. 16D, the acceleration a detected by the acceleration sensor according to the rotation angle θz around the Z axis is used as the reference absolute coordinate axis component in the store, that is, the acceleration in the X axis direction. Correction is made to the component aX and the acceleration component aY in the Y-axis direction. The corrected acceleration component aX and acceleration component aY are processed by the method shown in FIG. 13A, and the mobile terminal device 140 when the store clerk moves the mobile terminal device 140 in order to acquire the position information of the ESL 130. Is calculated.

  In addition, in the rotation around the X axis shown in FIG. 14 and the rotation around the Y axis shown in FIG. 15, the gravitational acceleration components in the respective axial directions described above are detected by the acceleration sensor and subtracted from the acceleration a. Thus, the acceleration accompanying the movement of the mobile terminal device 140 is calculated. Then, similarly to the idea shown in FIG. 16D, the acceleration obtained by subtracting the gravitational acceleration component is corrected to the reference absolute coordinate axis component in the store according to the rotation angle θx and the rotation angle θy. Thereafter, the moving distance of the mobile terminal device 140 is calculated by processing according to the method shown in FIG.

  Thus, the mobile terminal device 140 calculates the movement distance of the self-portable terminal device 140, and calculates the relative coordinates of the position of the ESL 130 based on the calculated movement distance. In addition, the mobile terminal device 140 stores the calculated relative coordinates of the ESL 130 and the shelf label code 135 of the ESL 130 in the memory 142 in the mobile terminal device 140. In addition, the mobile terminal device 140 calculates the absolute coordinates of the acquired ESL 130 based on the start point shelf barcode coordinates, which are absolute coordinates associated with the start point shelf barcode device 150-1.

  When the movement distance of the mobile terminal device 140 is calculated, the calculated movement distance of the mobile terminal device 140 exceeds the range of information related to the size of the shelf included in the shelf information acquired from the electronic shelf label management server 210. In the case where it is lost, the calculated moving distance of the mobile terminal device 140 may be corrected.

  For example, as illustrated in FIG. 17, when the store clerk moves the mobile terminal device 140 and continuously reads the shelf label codes 135 of the ESL 130-1 to ESL 130-8, the sensor unit 146 of the mobile terminal device 140 In the detection, it is assumed that the result of moving along the locus shown in the movement locus B3 is obtained. As can be seen from FIG. 17, the calculation point E8, which is the position information when the shelf label code 135 of the ESL 130-8 is read, is the start point shelf barcode coordinate included in the shelf information acquired from the electronic shelf label management server 210. It exceeds the length L of the product display shelf 300-1, which is the distance in the X-axis direction when (X1, Y1, Z1) is used as a reference. In such a case, as in the correction R8 shown in FIG. 17, a value related to the length of the calculation point E8 of the ESL 130-8 is set to a value within the length L of the merchandise display shelf 300-1 (in FIG. The movement distance of the mobile terminal device 140 is corrected so as to change to the value of the point E8a.

  Also, for example, as shown in FIG. 18, when the store clerk moves the mobile terminal device 140 and continuously reads the shelf label codes 135 of the ESL 130-1, ESL 130-4, ESL 130-9, and ESL 130-12. It is assumed that the detection by the sensor unit 146 of the mobile terminal device 140 has obtained a result of moving along the locus shown by the movement locus B4. As can be seen from FIG. 18, the calculation point E12 which is the position information when the shelf label code 135 of the ESL 130-12 is read is the start point shelf barcode coordinate included in the shelf information acquired from the electronic shelf label management server 210. The height Z1 of the stage 1 of the product display shelf 300-1 that is the distance in the Z-axis direction when (X1, Y1, Z1) is used as a reference is exceeded. In such a case, as in the correction R12 shown in FIG. 18, a value related to the height of the calculation point E12 of the ESL 130-12 is set to a value within the height Z1 of the stage 1 of the product display shelf 300-1 (in FIG. 18). The movement distance of the mobile terminal device 140 is corrected so as to change to the value of the correction point E12a.

As described above, the calculated movement distance of the mobile terminal device 140 can be corrected based on the information regarding the size of the shelf included in the shelf information acquired from the electronic shelf label management server 210.
In addition, when the calculated movement distance of the mobile terminal device 140 exceeds the range of the information regarding the size of the shelf included in the shelf information acquired from the electronic shelf label management server 210, the mobile terminal device 140 as described above. It is also possible to make the store clerk detect the position information of the ESL 130 again by displaying an error on the LCD display unit 143 of the mobile terminal device 140 without correcting the movement distance.

Whether or not the calculated movement distance of the mobile terminal device 140 exceeds the range of information regarding the size of the shelf included in the shelf information acquired from the electronic shelf label management server 210 in the correction of the movement distance of the mobile terminal device 140. This determination is based on whether or not an arbitrary distance value is set in advance, and a calculation result is obtained that the mobile terminal device 140 has moved beyond the shelf size and moved to a position separated by the set arbitrary distance value or more. It can also be set as the structure to judge.
In addition, when the calculated movement distance of the mobile terminal device 140 exceeds the range of information regarding the size of the shelf included in the shelf information acquired from the electronic shelf label management server 210, the value is equal to or greater than the set arbitrary distance value. When the calculation result indicates that the distance is not separated, the movement distance is corrected as described above. When the calculation result indicates that the distance is not less than the set arbitrary distance, an error is displayed on the LCD display unit 143 of the mobile terminal device 140. It is also possible to display the information so that the store clerk redetects the position information of the ESL 130.
In the present invention, a method for determining whether or not the calculated movement distance of the mobile terminal device 140 exceeds the range of information regarding the size of the shelf included in the shelf information acquired from the electronic shelf label management server 210, There is no provision for the subsequent processing method that accompanies the result.

  Next, a method for correcting the position information of the ESL 130 will be described. 19 and 20 are diagrams illustrating an example of correcting the position information of the ESL 130 in the arrangement of the ESL 130 of the commodity display shelf 300-1 illustrated in FIG. 19 and 20, after reading the start point shelf bar code 151-1, the shelf label code 135 of the ESL 130 is continuously read, and finally the end point shelf bar code unit 150-2 is read, and then the position of each ESL 130 is read. The case where information is corrected is shown.

  In FIG. 19, the store clerk moves the mobile terminal device 140 to continuously read the shelf label codes 135 of the ESL 130-1 to ESL 130-8, and finally the end point shelf pasted on the end point shelf barcode device 150-2. The barcode 151-2 is being read. At this time, it is assumed that the detection result of the sensor unit 146 of the mobile terminal device 140 has obtained a result of moving along the locus shown by the movement locus B5. As can be seen from FIG. 19, the position where the ESL 130 and the end shelf barcode device 150-2 are actually installed is different from the detected position information of the ESL 130 and the end shelf barcode device 150-2.

  First, the correction of the position information is an error which is a difference between the detected end point Ea which is the position information of the end point shelf barcode device 150-2 and the actual position information where the end point shelf barcode device 150-2 is installed. Component D is calculated. More specifically, in FIG. 19, the relative coordinates of the end point Ea based on the position information of the start point shelf barcode device 150-1 are calculated, and the actual position is determined based on the position information of the start point shelf barcode device 150-1. The difference from the relative coordinates of the position where the end-point shelf barcode device 150-2 is installed is defined as an error component D.

  For example, the relative coordinates of the end point Ea are (Xe, Ye, Ze). The relative coordinates of the position where the actual end point shelf barcode device 150-2 is installed are (L, 0,-(Z1-Z4)). From these two relative coordinates, the error component D is (Xe−L, Ye, Ze + (Z1−Z4)). When the calculated error component D is within a predetermined allowable value, the position information of each ESL 130 is corrected based on the information on the merchandise display shelf 300-1. If the calculated error component D is equal to or greater than a predetermined allowable value, it is determined that the acquisition of the position information of the ESL 130 has failed, and an error is displayed on the LCD display unit 143 of the mobile terminal device 140. Further, the position information of the ESL 130 and the information of the read shelf label code 135 are not transmitted to the electronic shelf label management server 210.

  Subsequently, the correction of the position information of each ESL 130 when the calculated error component D is within a predetermined allowable value is based on the height information and the depth information of the product display shelf 300-1. The position information of the ESL 130 is corrected. More specifically, the values related to the height and depth of the position information obtained by the detection of the sensor unit 146 of the mobile terminal device 140, like the correction R8a shown in FIG. 19 and the correction R3a shown in FIG. The portable terminal device 140 changes the shelf information acquired from the electronic shelf label management server 210 to the values of the height information and the depth information of the shelf position coordinate table shown in FIG.

  For example, in FIG. 19, the value regarding the height in the position information of the ESL 130-8 detected by the sensor unit 146 of the mobile terminal device 140 is a value between the level 2 and the level 3 in the shelf position coordinate table shown in FIG. Suppose that In this case, the value regarding the height in the position information of the ESL 130-8 is compared with the height values of the level 2 and level 3 of the shelf position coordinate table. And like correction R8a, the value regarding the height in the positional information of ESL130-8 and the value of the height of the step of the shelf position coordinate table are closer to each other (a value having a small difference in height value). change. The correction R8a shown in FIG. 19 shows an example in which the value is changed to the value in the column 2 of the shelf position coordinate table. Similarly, the value regarding the height in the position information of ESL130-1 to ESL130-7 is also changed to the value of the height of the shelf position coordinate table.

  Further, for example, in FIG. 20, it is assumed that the value regarding the depth in the position information of the ESL 130-3 detected by the sensor unit 146 of the mobile terminal device 140 is a value within a predetermined variation allowable range. In this case, the value relating to the depth in the position information of the ESL 130-3 is changed to “Y1” that is a value in the Y-axis direction in the shelf barcode coordinates of the shelf position coordinate table, as in the correction R3a. In FIG. 20, only ESL130-1 to ESL130-3 are shown, but the values related to the depth in the position information of other ESL130-4 to ESL130-8 are also values in the Y-axis direction of the shelf position coordinate table. Change to “Y1”. In addition, when the value regarding the depth in the position information of the ESL 130 detected by the sensor unit 146 of the mobile terminal device 140 is not a value within the predetermined variation allowable range, it is determined that the acquisition of the position information of the ESL 130 has failed, An error is displayed on the LCD display unit 143 of the mobile terminal device 140. Further, the position information of the ESL 130 and the information of the read shelf label code 135 are not transmitted to the electronic shelf label management server 210.

Second Embodiment
Next, another method for correcting the position information of the ESL 130 will be described. FIG. 21 is a diagram illustrating an example of correcting the position information of the ESL 130 in the arrangement of the ESL 130 in the commodity display shelf 300-1 illustrated in FIG. The second embodiment shown in FIG. 21 shows a case where the position information of each ESL 130 is corrected each time the shelf label code 135 of the ESL 130 is read continuously after the start point shelf barcode 151-1 is read. Yes.

  In FIG. 21, the store clerk moves the mobile terminal device 140 to continuously read the shelf label codes 135 of the ESL 130-1 to ESL 130-8. In addition, whenever the mobile terminal device 140 detects the ESL 130 by the sensor unit 146, the mobile terminal device 140 corrects the position information of the detected ESL 130. Thereby, the detection error (cumulative error) of the sensor unit 146 when the ESL 130 is detected by the sensor unit 146 of the mobile terminal device 140 can be reduced. Finally, the end point shelf barcode 151-2 attached to the end point shelf barcode device 150-2 is read. The movement locus of the mobile terminal device 140 at this time is the locus indicated by the movement locus B6.

  The correction of the position information performed each time the position information of the ESL 130 is detected by the mobile terminal device 140 is similar to the correction of the position information of each ESL 130 illustrated in FIG. Based on information and depth information. More specifically, as in the correction R8b shown in FIG. 21, the mobile terminal device 140 uses the electronic shelf label to indicate values related to the height and depth of the position information obtained by the detection of the sensor unit 146 of the mobile terminal device 140. The shelf information acquired from the management server 210, that is, the value of the height information of the level in the shelf position coordinate table shown in FIG.

  For example, in FIG. 21, the value regarding the height in the position information of the ESL 130-8 detected by the sensor unit 146 of the mobile terminal device 140 is a value between the level 2 and the level 3 in the shelf position coordinate table shown in FIG. Suppose that In this case, the value regarding the height in the position information of the ESL 130-8 is compared with the height values of the level 2 and level 3 of the shelf position coordinate table. And like correction R8b, the value regarding the height in the positional information of ESL130-8 and the value of the height of the step of the shelf position coordinate table are closer to each other (a value with a small difference in height value). change. The correction R8b illustrated in FIG. 21 illustrates an example in which the value is changed to the value in the column 2 of the shelf position coordinate table. Similarly, the values related to the height in the position information of ESL130-1 to ESL130-7 are also compared with the height values of the steps of the shelf position coordinate table when ESL130-1 to ESL130-7 are detected. Change to the value of the height of the closer shelf position coordinate table.

  Further, the value related to the depth in the position information of the ESL 130-8 detected by the sensor unit 146 of the mobile terminal device 140 is a value that the value related to the depth in the position information of the ESL 130-8 is within a predetermined variation allowable range. In some cases, similarly to the method shown in FIG. 20, the value related to the depth in the position information of the ESL 130-8 is changed to “Y1” which is the value in the Y-axis direction in the shelf barcode coordinate of the shelf position coordinate table. Similarly, the value related to the depth in the position information of ESL130-1 to ESL130-7 is also changed to “Y1” which is the value in the Y-axis direction of the shelf position coordinate table. In addition, when the value regarding the depth in the position information of the ESL 130 detected by the sensor unit 146 of the mobile terminal device 140 is not a value within a predetermined allowable fluctuation range, it is determined that the acquisition of the detected position information of the ESL 130 has failed. Then, an error is displayed on the LCD display unit 143 of the mobile terminal device 140. Thereby, the salesclerk can perform again the positional information of ESL130 which acquisition of positional information failed.

  Further, when the end point shelf barcode 151-2 pasted on the end point shelf barcode device 150-2 is read, the detected end point shelf barcode is calculated in the same manner as the calculation of the error component D shown in FIG. An error component between the end point Eb which is the position information of the device 150-2 and the position information where the actual end point shelf barcode device 150-2 is installed is calculated. If the calculated error component is within a predetermined allowable value, the corrected position information of each ESL 130 and the information of the read shelf label code 135 are transmitted to the electronic shelf label management server 210. If the calculated error component is equal to or greater than a predetermined allowable value, it is determined that the acquisition of the position information of the ESL 130 has failed as in the description in FIG. 19, and the LCD display unit of the mobile terminal device 140 An error is displayed at 143. Further, the position information of the ESL 130 and the information of the read shelf label code 135 are not transmitted to the electronic shelf label management server 210.

  Next, a method for correcting when the position information of the ESL 130 is acquired will be described. FIG. 22 is a flowchart illustrating an overall processing procedure for performing correction every time the position information of the ESL 130 is acquired in the mobile terminal device 140 according to the second embodiment. The processing procedure shown in FIG. 22 corrects the position information of the detected ESL 130 each time the mobile terminal device 140 detects the ESL 130, as shown in FIG. 21, with respect to the processing procedure shown in FIG. Only thing is different.

The overall processing procedure for performing correction when the position information of the ESL 130 is acquired is as follows.
First, in steps S300 to S330, as in the processing procedure of steps S100 to S130 shown in FIG. 10, the operation mode of the mobile terminal device 140 is confirmed and pasted to the start point shelf barcode device 150-1. The start point shelf barcode 151-1 is read, and the shelf label code 135 attached to the ESL 130 is read.

  When the shelf label code 135 affixed to the ESL 130 is read by the mobile terminal device 140 in step S330, the mobile terminal device 140 in step S340, the shelf label code 135 is the same as in step S140 shown in FIG. The position information of the ESL 130 is calculated based on the output value of the sensor unit 146 when is read. Further, the calculated position information of the ESL 130 is corrected based on the information of the product display shelf 300 included in the shelf information acquired from the electronic shelf label management server 210, and the corrected position information of the ESL 130 is stored in the mobile terminal device 140. Stored in the memory 142. When calculating the position information of the ESL 130, if the calculated position information of the ESL 130 is not a value within a predetermined fluctuation allowable range, it is determined that acquisition of the detected position information of the ESL 130 has failed, and An error is displayed on the LCD display unit 143 of the terminal device 140. Thereby, the store clerk can acquire the position information of the ESL 130 in which the acquisition of the position information has failed in the next step S350.

  Subsequently, in steps S350 to S360, as in the processing procedure of steps S150 to S160 shown in FIG. 10, the shelf label code 135 affixed to the ESL 130 is read and the end point shelf barcode device 150-2 is read. The pasted end shelf barcode 151-2 is read.

  When the terminal shelf barcode 151-2 pasted on the endpoint shelf barcode device 150-2 is read by the mobile terminal device 140 in step S360, in step S370, the mobile terminal device 140 is shown in FIG. Similar to step S170, the position information of the end point shelf barcode device 150-2 is calculated based on the output value of the sensor unit 146 when the end point shelf barcode 151-2 is read, and based on the calculation result. The absolute coordinates of the end point shelf barcode 151-2 are calculated. In step S370, the portable terminal device 140 determines the difference between the end point shelf barcode coordinates included in the shelf information acquired from the electronic shelf label management server 210 and the calculated absolute coordinates of the end point shelf barcode device 150-2. Based on this, an error component (variation amount) of the position information of the end point shelf barcode device 150-2 is calculated. Then, it is determined whether or not the difference in the position information of the calculated end point shelf barcode device 150-2 is within a predetermined error component (tolerance), and the calculated end point shelf barcode device 150-2. If the position information difference is within a predetermined difference (allowable difference), the process proceeds to step S380. If the calculated error component is equal to or greater than a predetermined allowable value, it is determined that the acquisition of the position information of the ESL 130 has failed, and an error is displayed on the LCD display unit 143 of the mobile terminal device 140.

  When the difference in the position information of the end point shelf barcode device 150-2 calculated in step S370 is within a predetermined difference (tolerance), in step S380, the mobile terminal device 140 performs the steps shown in FIG. Similarly to S180, the corrected position information of the ESL 130 and the information of the read shelf label code 135 stored in the memory 142 in the mobile terminal device 140 so far are transmitted to the electronic shelf label management server 210. If the error component calculated in step S370 is equal to or greater than a predetermined allowable value, the corrected position information of the ESL 130 and the information of the read shelf label code 135 are not transmitted to the electronic shelf label management server 210. .

  The processing procedure for calculating and correcting the position information of the ESL 130 is the same as the processing procedure for calculating and correcting the position information of the ESL 130 shown in FIG. However, in FIG. 11, the portable terminal device 140 performs all the processes shown in the stage before the end-point shelf barcode 151-2 is read and the stage after the end-point shelf barcode 151-2 is read. What is different every time position information is acquired.

  As described above, the position information of the ESL 130 can be calculated based on the detection values of the acceleration sensor and the gyro sensor, and the position information of the ESL 130 can be corrected. Then, the electronic shelf label management server 210 that has received the corrected relative coordinates of the ESL 130 from the mobile terminal device 140 has a merchandise display shelf on which the start shelf barcode device 150-1 and the end shelf barcode device 150-2 are installed. In 300, information on which level of the product display shelf 300 the ESL 130 is arranged can be obtained.

  In FIG. 22, the configuration in which the position information of the ESL 130 is corrected in the mobile terminal device 140 has been described. However, the electronic shelf label management server 210 executes the correction of the position information of the ESL 130. You can also. In this case, for example, the mobile terminal device 140 calculates the position information of the read ESL 130, and transmits the calculated position information of the ESL 130 to the electronic shelf label management server 210. Then, the electronic shelf label management server 210 corrects the received position information of the ESL 130 based on the recorded shelf position coordinate table, and transmits the corrected position information of the ESL 130 to the mobile terminal device 140. Then, the mobile terminal device 140 that has received the corrected position information of the ESL 130, based on the received corrected position information of the ESL 130, information on the current position of the mobile terminal device 140, for example, movement of the mobile terminal device 140 The distance information is corrected, and the position information of the next ESL 130 is acquired. With such a configuration, the electronic shelf label management server 210 can correct the position information of the ESL 130.

  Next, a method for acquiring the position information of the ESL 130 when associating the information on the products displayed on the product display shelf 300 with the shelf label code 135 will be described. FIG. 23 is a diagram illustrating an example of linking the ESL 130 and the information of the product 400 when acquiring the position information of the ESL 130 in the arrangement of the ESL 130 of the product display shelf 300-1 illustrated in FIG. is there. FIG. 24 is a flowchart showing a processing procedure for acquiring the position information of the ESL 130 and the information of the product 400 in the mobile terminal device 140 of this embodiment. In FIG. 23, as shown in FIG. 21, when the portable terminal device 140 corrects the position information of the ESL 130 every time the ESL 130 is detected, the association between the ESL 130 and the information of the product 400 is applied. Will be described. In addition, the application to the embodiment of correcting the position information of the ESL 130 after acquiring the position information of the end point shelf barcode device 150-2 shown in FIG. 19 is correction of the position information of the ESL 130 for each detection of the ESL 130 in the following description. Is replaced after the acquisition of the position information of the end point shelf barcode device 150-2.

  FIG. 23 shows the products 400-1 to 400-3 associated with each ESL 130 when acquiring the position information of the ESL 130-1 to ESL 130-3 based on the absolute coordinates of the start point shelf barcode device 150-1. An example of acquiring a product code (barcode) is shown. The movement trajectory of the mobile terminal device 140 by the store clerk when acquiring the product codes of the ESL 130-1 to ESL 130-3 and the merchandise 400-1 to the merchandise 400-3 is a movement trajectory B7.

  First, the portable terminal device 140 reads the starting point shelf barcode 151-1 attached to the starting point shelf barcode device 150-1. Subsequently, the shelf label code 135 affixed to the ESL 130-1 is read by the mobile terminal device 140. And the portable terminal device 140 correct | amends the positional information when it reads with the shelf label code 135 affixed on ESL130-1. Subsequently, the mobile terminal device 140 reads the product code of the product 400-1 corresponding to the ESL 130-1.

  Subsequently, the mobile terminal device 140 reads the shelf label code 135 attached to the ESL 130-2, corrects the position information of the ESL 130-2, and reads the product code of the product 400-2 corresponding to the ESL 130-2. . Similarly, the mobile terminal device 140 reads the shelf label code 135 attached to the ESL 130-3, corrects the position information of the ESL 130-3, and reads the product code of the product 400-3 corresponding to the ESL 130-3. .

  Lastly, the portable terminal device 140 reads the end point shelf bar code 151-2 pasted on the end point shelf bar code device 150-2, and then corrects the position information of each ESL 130 and the read shelf label code 135. Are sent to the electronic shelf label management server 210.

  In this way, by reading the shelf label code 135 and correcting the position information of the ESL 130, the electronic shelf label management server 210 links the ESL 130 position information and the product information of the product 400. The attached product management data can be acquired.

  Here, a processing procedure in which the mobile terminal device 140 acquires the position information of the ESL 130 and the information of the product 400 will be described. Note that the detailed processing procedure in each step of the flowchart shown in FIG. 23 is the same as that in FIG. 22, and therefore, here, a schematic processing flow when acquiring the position information of the ESL 130 and the information of the product 400 Only will be described.

  First, in step S <b> 400, the mobile terminal device 140 reads the start point shelf barcode 151-1 attached to the start point shelf barcode device 150-1 by the barcode reading unit 145 in the mobile terminal device 140.

  Subsequently, in step S <b> 410, the mobile terminal device 140 reads the shelf label code 135 attached to the ESL 130 by the barcode reading unit 145 in the mobile terminal device 140. Then, the mobile terminal device 140 calculates a moving distance when the mobile terminal device 140 moves based on the acceleration value output by the acceleration sensor in the sensor unit 146 and the angular velocity value output by the gyro sensor. Based on the calculated moving distance, the position information of the ESL 130 when the mobile terminal device 140 reads the shelf label code 135 is calculated. Then, the mobile terminal device 140 corrects the calculated position information of the ESL 130 based on the information on the merchandise display shelf 300 included in the shelf information acquired from the electronic shelf label management server 210.

  Subsequently, in step S420, the mobile terminal device 140 reads the product code of the product 400 corresponding to the ESL 130 read in step S410 by the barcode reading unit 145 in the mobile terminal device 140.

  Subsequently, in step S430, the mobile terminal device 140 confirms whether or not to acquire the position information of the next ESL 130. When the position information of the next ESL 130 is not acquired, the process proceeds to step S440. When the position information of the next ESL 130 is acquired, the process returns to step S410 to read the shelf label code 135, calculate the position information of the ESL 130, correct the position information of the ESL 130, and the product code of the product 400 corresponding to the ESL 130. Repeat reading.

  First, in step S440, the mobile terminal device 140 reads the end point shelf barcode 151-2 attached to the end point shelf barcode device 150-2 by the barcode reading unit 145 in the mobile terminal device 140.

  In step S450, the mobile terminal device 140 transmits the corrected position information of the ESL 130, the read shelf label code 135 information, and the read product code information to the electronic shelf label management server 210, and the process is completed.

  Thereafter, in the electronic shelf label management server 210, based on the corrected position information of the ESL 130, the information of the shelf label code 135, and the information of the product code transmitted from the mobile terminal device 140, the position information of the ESL 130 and the product 400 are displayed. Record product management data associated with product information.

  As described above, when displaying the product 400 on the product display shelf 300, the information of the corrected position where the ESL 130 is installed is acquired simultaneously with the operation of associating the product code of the product 400 with the ESL 130. Can do.

  Note that in the example of linking the ESL 130 and the information of the product 400 shown in FIGS. 23 and 24, the shelf label code 135 previously attached to the ESL 130 is read, and then the product 400 of the product 400 corresponding to the ESL 130 is read. Although an example of reading a code has been shown, the present invention is not limited to this order. For example, the product code of the product 400 corresponding to the ESL 130 can be read first, and then the shelf label code 135 attached to the ESL 130 can be read. For example, when it is possible to determine whether the code (bar code) read by the mobile terminal device 140 is the shelf label code 135 or the product code, the shelf label code 135 attached to the ESL 130 The order of reading the product code of the product 400 corresponding to the ESL 130 can be made arbitrary.

  FIG. 25 shows a product based on the shelf label position table recorded in the electronic shelf label management server 210, the product link information table as product management data, and the shelf label position table and the product link information table in this embodiment. It is the figure which showed an example of the position information display screen when it searched. 25A shows a shelf label position table obtained by detecting the position information of the ESL 130 by the mobile terminal device 140, FIG. 25B shows a product link information table in the product display shelf 300, and FIG. c) shows a search result screen displayed on the LCD display unit 143 of the mobile terminal device 140 when a product search is performed.

  The shelf label position table shown in FIG. 25A includes a shelf number for identifying the product display shelf 300, a device code for identifying the start point shelf barcode device 150-1 and the ESL 130 installed in the product display shelf 300, It is an information table in which absolute coordinates and relative coordinates, which are information on positions where the start point shelf barcode device 150-1 and the ESL 130 are installed, and remark data, which is supplementary information corresponding to the ESL 130, are associated with each other. Further, the product link information table shown in FIG. 25B is information in which a device code for identifying the ESL 130 installed on the product display shelf 300 is associated with the product code and the product name of the product 400 corresponding to the ESL 130. It is a table.

  The device code of the shelf label position table shown in FIG. 25A includes the start shelf barcode device 150-1 attached to the start shelf shelf barcode device 150-1 and the shelf label attached to the ESL 130. A code 135 is recorded. Further, the absolute coordinates of the start point shelf barcode device 150-1 are recorded with the start point shelf barcode coordinates of the shelf barcode coordinates in the shelf position coordinate table shown in FIG. 8, and the start point shelf barcode coordinates are used as reference coordinates. Yes. The relative coordinates of the ESL 130 are recorded with the relative coordinates of the ESL 130 transmitted from the mobile terminal device 140. The absolute coordinates of the ESL 130 are recorded with the absolute coordinates of the ESL 130 calculated from the relative coordinates of the ESL 130 based on the start point shelf barcode coordinates (absolute coordinates). In addition, in the product code of the product link information table shown in FIG. 25B, the product code corresponding to the ESL 130 transmitted from the mobile terminal device 140 together with the position information of the ESL 130 and the shelf label code 135 is recorded. . In the product name of the product link information table, the product name corresponding to the product code transmitted from the mobile terminal device 140 is recorded. For example, the electronic shelf label management server 210 obtains information on the product 400 recorded in the store server 200 from the store server 200 shown in FIG. And recording based on the information of the acquired product 400. In the present invention, the method for associating the product code with the product name is not defined.

  In the search result screen shown in FIG. 25C, when the store clerk operates the mobile terminal device 140 to search for the product 400, the searched product 400 is displayed on which product display shelf 300. Information about whether or not it is placed is displayed. In the example shown in FIG. 25C, the store clerk searches for the product “ABC”, and the search result of the searched product “ABC” is shown. More specifically, it can be seen from the product link information table shown in FIG. 25B that the product “ABC” searched by the store clerk is the product 400 corresponding to the ESL 130-3. Then, according to the shelf label position table shown in FIG. 25A, the ESL 130-3 is installed on the commodity display shelf 300-1, and the relative coordinates of the ESL 130-3 are relative coordinates (x3, Z1). It can be seen that it is. Based on this information, the mobile terminal device 140 displays information on the relative coordinates (x3, Z1) of the merchandise display shelf 300-1 and the ESL 130-3. In FIG. 25 (c), the information on the relative coordinates (x3, Z1) of ESL130-3 can be easily recognized visually by the store clerk in the planes in the X-axis direction and the Z-axis direction ( XZ plane) image and the position information of the ESL 130-3 is displayed, but in the present invention, the display screen of the mobile terminal device 140 is not defined. For example, the position information of the merchandise display shelf 300-1 in the store can be represented by images on the planes in the X and Y directions (XY plane), and the position information on the ESL 130-3 can be displayed as an image on the XZ plane.

  The display of the search result screen shown in FIG. 25C can be generated from the information stored in the memory 142 in the mobile terminal device 140. In the present invention, the search result screen displayed by the mobile terminal device 140 is used. It is not limited to the generation of. For example, when a store clerk operates the mobile terminal device 140 to search for the product 400, the mobile terminal device 140 transmits a search word for the product 400 to be searched to the electronic shelf label management server 210. The electronic shelf label management server 210 that has received the search word from the mobile terminal device 140 searches for the product 400 and transmits the search result to the mobile terminal device 140. And it can also be set as the structure which the portable terminal device 140 which received the search result from the electronic shelf label management server 210 produces | generates a display screen based on the received search result.

  As described above, in the present invention, by reading the shelf barcode 151 of the start point shelf barcode device 150-1, the attitude of the mobile terminal device 140 is always kept constant, and the sensor unit 146 in the mobile terminal device 140 is kept in a constant state. Thus, the distance traveled by the mobile terminal device 140 can be calculated. As a result, it is possible to obtain information on the position when the shelf label code 135 affixed to the ESL 130 after reading the shelf barcode 151, that is, the position where the ESL 130 is installed. Further, by reading the shelf barcode 151 of the end shelf barcode device 150-2, the acquired position information of the ESL 130 can be corrected to information on the height and depth of the stage of the product display shelf 300 that is known in advance. . As a result, the position information of the ESL 130 can be automatically acquired with good workability without recording the position information of the ESL 130 in advance.

  Further, simultaneously with the associating operation between the product code of the product 400 and the ESL 130 performed when the product 400 is displayed on the product display shelf 300, information on the position where the ESL 130 is installed is acquired, and the position of the acquired ESL 130 is acquired. Information can be corrected. Thereby, it is possible to obtain product management data in which the management data in which the product code of the product 400 is associated with the ESL 130 and the location information of the ESL 130 are associated with each other efficiently.

In addition, for example, when the store clerk checks the information of the product 400 at the time of inventory of the product 400, the position information of the ESL 130 is recorded with the three-dimensional information, so the position of the product 400 is easily specified. be able to.
Further, the product 400 can be searched based on the recorded position information of the ESL 130. In the search for the product 400, it is possible to obtain information as to which level of the product display shelf 300 the product 400 being searched is arranged, so that the position of the product 400 can be more easily confirmed. it can.

In the present embodiment, an example of ESL installed on a merchandise display shelf of a store such as a supermarket or a convenience store has been described as an information display means for displaying information on an article. However, the present invention is limited to ESL. It is not something. For example, it may be a paper medium on which a barcode of identification information for identifying each of the information display means is printed together with information other than information such as products sold at a store.
Further, the present invention is not limited to application in a store such as a supermarket or a convenience store. For example, in a warehouse, etc., to obtain information on labels and tags that display information on the contents of stored items attached to shelves for storing stored items, boxes containing stored items, and stored items themselves Can also be applied. Further, for example, in a business dealing with documents such as a bank, it may be arranged in a paper storage area and used to acquire position information of a display device that displays a description of the paper and the remaining number of sheets. Further, in a factory or the like, it may be attached to a panel for displaying work instructions to workers or a shelf on which parts are placed, and used to acquire position information of labels or tags for displaying information such as parts classification.

  The embodiment of the present invention has been described above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes various modifications within the scope of the present invention. It is.

DESCRIPTION OF SYMBOLS 1 ... Store system 10 ... In-store system 20 ... Backyard system 200 ... Store server 210 ... Electronic shelf label management server 100 ... POS cash register 110 ... Wireless LAN access point 120 ... Repeaters 130, 130-1, 130-2, 130-3, 130-4, 130-5, 130-6, 130-7, 130-8, 130-9, 130-10, 130-11 , 130-12, 130-13 ... ESL
131 ... CPU
132 ... Memory 133 ... LCD display unit 134 ... Wireless communication unit 135 ... Shelf label code 140 ... Mobile terminal device 141 ... CPU
142 ... Memory 143 ... LCD display unit 144 ... Wireless communication unit 145 ... Bar code reading unit 146 ... Sensor unit 147, 148 ... Fitting unit 150 ... Shelf bar code device 150-1 ... start point shelf barcode device 150-2 ... end point shelf barcode device 151 ... shelf barcodes 152, 153 ... fitting portions 300, 300-1, 300-2, 300- 3 ... Product display shelves 400, 400-1, 400-2, 400-3 ... Products

Claims (9)

Information detecting means for detecting identification information used for identification of information display means for displaying information for identifying an article;
Coordinate detection means for detecting coordinates when the identification information is detected by the information detection means with respect to a first reference coordinate set in advance;
Position information calculation means for calculating position information when the identification information is detected by the information detection means based on the first reference coordinates and the coordinates detected by the coordinate detection means;
A position information correction unit that corrects position information in a specific direction when the identification information calculated by the position information calculation unit is detected based on predetermined known information;
A position information acquisition device comprising: The information detection means further includes
Detecting first coordinate identification information from an object placed at a predetermined first location;
Detecting second coordinate identification information from an object placed at a predetermined second location;
The coordinate detection means further includes
Setting absolute coordinates previously associated with the first coordinate identification information detected by the information detection means as the first reference coordinates;
The position information correcting means includes
An absolute coordinate previously associated with the second coordinate identification information detected by the information detection unit is set as a second reference coordinate, and the set second reference coordinate and the coordinate detection unit are Based on the difference from the coordinates when the second coordinate identification information is detected, it is determined whether or not to correct the position information in a specific direction by the position information correction unit.
The position information acquisition apparatus according to claim 1. The coordinate detection means includes
An acceleration sensor for detecting an acceleration when the position information acquisition device moves;
An angle sensor for detecting an angle when the direction of the position information acquisition device changes;
With
Initialize an acceleration detection value output from the acceleration sensor when the first reference coordinates are set and an angle detection value output from the angle sensor;
The first reference coordinates are set based on the detected acceleration value from the acceleration sensor and the detected angle value from the angle sensor output until the identification information is detected by the information detecting means. Calculating the movement distance of the position information acquisition device from when the identification information is detected to
Based on the calculated movement distance, a coordinate when the position information acquisition device detects the identification information is calculated as a relative coordinate with respect to the first reference coordinate.
The position information acquisition apparatus according to claim 2. The acceleration sensor is
Detect triaxial acceleration, and output the detected values of the detected triaxial acceleration,
The angle sensor is
Detecting the angle of the three axes, and outputting the detected values of the detected angles of the three axes,
The coordinate detection means includes
Based on the detected value of the triaxial angle output from the angle sensor, the detected value of the triaxial acceleration output from the acceleration sensor is corrected,
Calculating the movement distance of the position information acquisition device based on the corrected detection value of the three-axis acceleration;
The position information acquisition apparatus according to claim 3. The position information correcting means includes
After the information detecting means detects the second coordinate identification information,
Based on predetermined known height information, correct the height information when detecting the identification information calculated by the position information calculation means,
Correcting the depth information when the identification information calculated by the position information calculation means is detected based on predetermined known depth information;
The position information acquisition apparatus according to claim 4. The position information correcting means includes
Every time the identification information is detected,
Based on predetermined known height information, correct the height information when detecting the identification information calculated by the position information calculation means,
Correcting the depth information when the identification information calculated by the position information calculation means is detected based on predetermined known depth information;
The position information acquisition apparatus according to claim 4. Display means for displaying the identification information in association with the position information when the identification information corrected by the position information correction means is detected;
The position information acquisition apparatus according to claim 1, further comprising: The information display means includes
An electronic shelf label that displays information for identifying the article,
The information detecting means includes
Detecting device identification information associated with the electronic shelf label as the identification information;
The position information acquisition apparatus according to claim 1. An information detection procedure in which the information detection means detects identification information used for identification of the information display means for displaying information for identifying the article;
A coordinate detection procedure for detecting coordinates when the coordinate detection means detects the identification information by the information detection means with respect to a first reference coordinate set in advance;
Position information for calculating position information when the information detecting means detects the identification information based on the first reference coordinates and the coordinates detected by the coordinate detecting means. Calculation procedure,
A positional information correction procedure for correcting positional information in a specific direction when the positional information correcting unit detects the identification information calculated by the positional information calculating unit based on predetermined known information;
A position information acquisition method comprising:

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