WO2022085837A1 - Procédé de suivi d'emplacement d'étiquette électronique d'étagère et système d'étiquette électronique d'étagère associé - Google Patents

Procédé de suivi d'emplacement d'étiquette électronique d'étagère et système d'étiquette électronique d'étagère associé Download PDF

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Publication number
WO2022085837A1
WO2022085837A1 PCT/KR2020/015083 KR2020015083W WO2022085837A1 WO 2022085837 A1 WO2022085837 A1 WO 2022085837A1 KR 2020015083 W KR2020015083 W KR 2020015083W WO 2022085837 A1 WO2022085837 A1 WO 2022085837A1
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WIPO (PCT)
Prior art keywords
node
esl
reference node
server
signal
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Application number
PCT/KR2020/015083
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English (en)
Korean (ko)
Inventor
김지성
Original Assignee
주식회사 지오플랜
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Publication of WO2022085837A1 publication Critical patent/WO2022085837A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/08—Fastening or securing by means not forming part of the material of the label itself
    • G09F3/18—Casings, frames or enclosures for labels
    • G09F3/20—Casings, frames or enclosures for labels for adjustable, removable, or interchangeable labels
    • G09F3/208—Electronic labels, Labels integrating electronic displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/08—Fastening or securing by means not forming part of the material of the label itself
    • G09F3/18—Casings, frames or enclosures for labels
    • G09F3/20—Casings, frames or enclosures for labels for adjustable, removable, or interchangeable labels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/08—Fastening or securing by means not forming part of the material of the label itself
    • G09F3/18—Casings, frames or enclosures for labels
    • G09F3/20—Casings, frames or enclosures for labels for adjustable, removable, or interchangeable labels
    • G09F3/204—Casings, frames or enclosures for labels for adjustable, removable, or interchangeable labels specially adapted to be attached to a shelf or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Definitions

  • the present invention relates to a method for tracking the position of an electronic shelf label and to an electronic shelf label system therefor.
  • ESL Electronic Shelf Label
  • the ESL system using such an electronic shelf label provides information on the corresponding product in real time by receiving price-related information of the corresponding product from a server and displaying the received information.
  • the electronic shelf label links with the POS (Point of Sale) device to guide product price information, and includes various information such as discount information, display quantity, and stock quantity, a system that helps product purchase and store operation am.
  • electronic shelf labels have an advantage in that they display real-time information on goods in large marts or warehouses that manage tens of thousands of goods
  • electronic shelf labels for each article have to be appropriately reflected when the position of goods changes. need to track its location. Therefore, while maintaining the advantages of the existing electronic shelf label, a new electronic shelf label equipped with a location tracking function and a system using the same are required.
  • the present invention is to solve the above problems, and an object of the present invention is to provide a method and a system for tracking detailed location information (ie, shelf location information) of an ESL (Electronic Shelf Label) node.
  • ESL Electronic Shelf Label
  • a method for an ESL system to track a location of an ESL node includes: receiving, by the ESL node, a location tracking command; identifying, by the ESL node, at least one reference node mounted on a shelf at a predetermined location based on a location tracking command; transmitting, by the ESL node, at least one response signal to the at least one reference node in response to at least one Ultra Wideband (UWB) signal broadcast by the at least one reference node; and receiving, by the server, distance information and angle information between the at least one reference node and the ESL calculated from the at least one response signal, and calculating the detailed shelf position of the ESL node.
  • UWB Ultra Wideband
  • the ESL system includes at least one reference node mounted on a shelf at a predetermined position; Receiving a location tracking command, identifying the at least one reference node, and transmitting at least one response signal to the at least one reference node in response to at least one UWB signal broadcast by the at least one reference node ESL node; and a server calculating the detailed shelf position of the ESL node based on distance information and angle information between the at least one reference node and the ESL calculated from the at least one response signal.
  • the ESL node includes a display unit for displaying information about the article; a first wireless communication unit communicating with a server through an anchor node, receiving information on the article, and receiving a location tracking command; communicates directly with a reference node, detects a signal broadcast by at least one identified reference node as the location tracking command is received, and transmits a response signal to the at least one reference node in response to the detected signal; , a second wireless communication unit for receiving a response signal in response to the response signal; and a signal controller configured to identify the at least one reference node based on the location tracking command and calculate a distance value based on a difference between a time at which the response signal is transmitted and a time at which the response signal is received.
  • the at least one reference node may be matched for each anchor node.
  • the ESL system of the present invention can enable a user to easily identify the detailed location of an item in a place where many products are displayed, such as a large store or a distribution center, using an ESL node. .
  • the ESL system of the present invention can track the detailed location of the ESL node even in an environment in which the ESL nodes are closely arranged by tracking the location of the ESL node using reference nodes.
  • FIG 1 shows an ESL (Electronic Shelf Label, Electronic Shelf Label) system according to an embodiment of the present invention.
  • ESL Electronic Shelf Label, Electronic Shelf Label
  • FIG. 2 is a flowchart illustrating a method for an ESL system to track a location of an ESL node according to an embodiment of the present invention.
  • FIG. 3 is an example in which a server calculates a detailed shelf position of an ESL node according to an embodiment of the present invention.
  • FIG. 4 is another example in which a server calculates a detailed shelf position of an ESL node according to an embodiment of the present invention.
  • FIG. 5 shows a configuration of an ESL node according to an embodiment of the present invention.
  • the ESL system 1 shows an ESL (Electronic Shelf Label, Electronic Shelf Label) system 1 according to an embodiment of the present invention.
  • the ESL system 1 according to an embodiment of the present invention includes a server 10, a plurality of anchor nodes 11-1, 11-2,..,:11, at least one reference node 12, and a plurality of It includes an ESL node (13).
  • the server 10 controls at least one reference node 12 and a plurality of ESL nodes 13 through the anchor node 11 .
  • the server 10 may include a user input device (not shown) such as a console to receive a control command from a user, and control the reference node 12 and the ESL node 13 based on the control command.
  • the server 10 stores and manages information of goods to be displayed on the ESL node 13 - non-limiting examples, price, discount information, inventory, barcode, country of origin, etc. - and transmits it to the ESL node 13 to Let the above information be displayed on the ESL node 13 . That is, the ESL node 13 is mounted on a shelf on which goods are loaded, such as a large mart, a store, a distribution center, and the like, and communicates with the server 10 through a nearby anchor node among the plurality of anchor nodes 11 . The ESL node 13 displays the information of the article received from the server 10 .
  • the server 10 periodically or aperiodically tracks the detailed shelf position of the ESL node 13 using the reference node 12 .
  • the reference node 12 is fixed at a predetermined position of the shelf on which the article is loaded, and is used to track the detailed shelf position of the variable ESL nodes.
  • the ESL node 13 and the at least one reference node 12 provide distance information and angle information between devices obtained by direct communication with each other to the server 10 .
  • the server 10 stores and manages a predetermined location of the reference node 12 .
  • the server 10 may match, store and manage reference nodes for each anchor node 11 .
  • the first anchor node 11-1 is matched with the first reference node 12-1, and ESL nodes connected to the first anchor node 11-1 and the first reference node 12- 1) can obtain distance information and angle information through direct communication.
  • the server 10 may track the detailed shelf position of the ESL node 13 based on the information obtained from the first reference node 12 and/or the ESL node 13 .
  • the reference node 12 and the ESL node 13 may transmit and receive signals based on Ultra Wideband (UWB) wireless communication.
  • UWB Ultra Wideband
  • UWB (or ultra-wideband) wireless communication transmits data using short pulses of 1 nano-second or less, which have a constant period and waveform regardless of carrier wave or modulation.
  • As a communication method for transmitting and receiving in baseband it has a communication range of about 5m to 10m.
  • the reference node 12 and the ESL node 13 may further include other wireless communication circuits in addition to the UWB communication circuit to communicate with the anchor node 11 and/or the server 10 through this.
  • the reference node 12 and the ESL node 13 are a BLE (Bluetooth Low Energy) communication circuit, NFC (Near Field Communication) communication circuit, Wi-Fi (Wireless-Fidelity) communication circuit, Zigbee communication A circuit may be further provided. That is, the reference node 12 and the ESL node 13 of the present invention may allow the user to more efficiently manage the store by differentiating the communication range with the server 10 and the communication range between each other.
  • the anchor node 11 mediates communication between the ESL node 13 and the server 10 within a certain range. When data is received from the server 10 , it is transmitted to the corresponding reference node 12 and/or ESL node 13 . In addition, the anchor node 11 communicates with the reference node 12 within a certain range, so that the server 10 may be used to identify the reference node 12 . In addition, the anchor node 11 periodically or aperiodically transmits a wake-up signal to the ESL node 13 and the reference node 12 to control the operation of the ESL node 13 and the reference node 12 . You can also control it.
  • the reference node 12 may also function as an ESL node to display product information, but is not limited thereto.
  • the reference node 12 may be a beacon device that does not include a display and notifies its own information to neighboring ESL nodes.
  • FIG. 2 is a flowchart illustrating a method for an ESL system to track a location of an ESL node according to an embodiment of the present invention.
  • the ESL node 13 receives a location tracking command (S21).
  • the location tracking command may be received from the server 10 through the anchor node 11 .
  • the wake-up signal of the anchor node 11 may be used as a location tracking command.
  • the ESL node 13 identifies at least one reference node 12 mounted on a shelf at a predetermined location based on the location tracking command (s23). For example, the server 10 may match at least one reference node for each anchor node 11 , and provide information on this along with a location tracking command. That is, the server 10 matches and manages at least one reference node 12 within a predetermined communication range of each anchor node 11 to the corresponding anchor node 11, and may transmit it together with a location tracking command.
  • the ESL node 13 may identify at least one reference node to be used for location tracking by extracting a reference node matching the anchor node that has transmitted the location tracking command.
  • the ESL node 13 may receive the UWB signal broadcast by the at least one reference node 12 and identify the at least one reference node 12 based on the received UWB signal.
  • the reference node 12 may be managed in units of UWB signal ranges.
  • At least one reference node 12 periodically or aperiodically broadcasts the UWB signal (s22).
  • the reference node 12 may periodically broadcast a UWB signal to notify its own information, and may receive a response signal from an arbitrary ESL node.
  • the UWB signal broadcast by the reference node 12 may be a beacon signal, but is not limited thereto.
  • the ESL node 13 transmits a response signal to at least one UWB signal broadcast by the at least one reference node 12 (s24).
  • the response signal may be a UWB signal.
  • the reference node 12 calculates a first distance value based on the difference between the time at which the UWB signal is broadcast and the time at which the response signal is received, and transmits it to the server 10 (s25-1). ).
  • the reference node 12 transmits the angle information of the ESL node 13 to the server 10 based on the reception angle of the antenna at which the response signal is detected (s25-2).
  • the reference node 12 may calculate three-dimensional angle information using two or more antennas, and may use an Angle of Arrival (AOA) algorithm, but is not particularly limited.
  • AOA Angle of Arrival
  • the reference node 12 may transmit a response signal to the response signal (s24-1).
  • the ESL node 13 calculates a second distance value based on the difference between the time at which the response signal is transmitted and the time at which the response signal is received, and transmits it to the server 10 (s26).
  • the present ESL system 1 measures the distance between the reference node 12 and the ESL node 13 using a two-way ranging method, thereby minimizing errors due to clock drift.
  • the ESL node 13 may also provide the server 10 with 3D angle information calculated based on the reception angle of the antenna at which the response signal of the reference node 12 is detected. However, this is not essential.
  • the server 10 tracks the detailed shelf position of the ESL node 13 using the received first and second distance values and angle information (s27).
  • the server 10 may calculate distance information from the reference node 12 to the ESL node 13 based on the received first and second distance values. In this case, the second distance value may be used to correct the first distance value.
  • the server 10 may track the detailed shelf position of the ESL node 13 by adding angle information to the distance information.
  • the detailed shelf position of each tracked ESL node 13 may be stored in a database (not shown).
  • the server 10 calculates the detailed shelf position of the ESL node 13 according to an embodiment of the present invention.
  • the first and second reference nodes 12a and 12b may be disposed at both ends of one shelf.
  • the first ESL node 13a identifies the first and second reference nodes 12a and 12b, and then responds to the first UWB signal transmitted by the first reference node 12a A signal is transmitted, and a second response signal is transmitted to the second UWB signal transmitted by the second reference node 12b.
  • the server 10 receives the first distance value d1 and the first reception angle ⁇ 1 between the first reference node 12a and the first ESL node 13a from the first reference node 12a, and the second The second distance value d2 and the second reception angle between the reference node 12b and the first ESL node 13a may be received from the second reference node 12b.
  • the server 10 includes a third distance value d1' between the first reference node 12a and the first ESL node 13a, and a fourth distance value d1' between the second reference node 12b and the first ESL node 13a.
  • the distance value d2' may be received.
  • the third distance value d1' may be for correcting the first distance value d1
  • the fourth distance value d2' may be for correcting the second distance value d2.
  • the server 10 may track the detailed shelf position (eg, the first left shelf) of the first ESL node 13a using the received first to fourth distance values and the first and second reception angles.
  • the server 10 may track the detailed shelf position (eg, the first left shelf) of the first ESL node 13a using the received first to fourth distance values and the first and second reception angles.
  • the server 10 may track the detailed shelf position of the second ESL node 13b using distance information and angle information received from the first and second reference nodes 12a and 12b.
  • the ESL system 1 of the present invention can track the detailed location of the ESL node even in an environment in which the ESL nodes are closely arranged by tracking the location of the ESL node using reference nodes.
  • two reference nodes are disposed on one shelf in FIG. 3
  • two or more reference nodes may be disposed on different shelves as in FIG. 4 .
  • the anchor node 11 may communicate with ESL nodes located on different shelves, and in this case, the reference nodes 12a and 12b may be arranged on different shelves. there is.
  • the server 10 may manage the reference node 12 for each UWB signal range.
  • the location tracking command may include information on reference nodes for each UWB signal range.
  • the server 10 tracks the detailed shelf position of the ESL node 13 using two or more reference nodes, but the ESL system 1 is an ESL node using one reference node. It is also possible to track the detailed shelf position of (13). That is, in the example of FIG. 3 , the server 10 uses the first distance value d1 and the angle information ⁇ 1 received from the first reference node 12a to determine the detailed shelf position of the first ESL node 13a. may be tracked and corrected based on the third distance value d1' received from the first ESL node 13a. This can be used in an environment where ESL nodes are not densely deployed.
  • FIG. 5 shows the configuration of the ESL node 13 according to an embodiment of the present invention. Since the ESL node 13 of FIG. 5 is related to the embodiments of FIGS. 1 to 4 , a redundant description will be omitted.
  • the ESL node 13 includes a display unit 51 , a first wireless communication unit 52 , a second wireless communication unit 53 , and a signal control unit 54 . .
  • the display unit 51 displays information on the goods provided from the server 10, and may be implemented as a Bistable Cholesteric Display (BCD), an Electrophoretic Display (EPD), etc. It is not particularly limited.
  • BCD Bistable Cholesteric Display
  • EPD Electrophoretic Display
  • the first wireless communication unit 52 includes at least one component that communicates with the server 10 through the anchor node 11 .
  • the first wireless communication unit 52 as a non-limiting example, BLE (Bluetooth Low Energy) communication circuit, NFC (Near Field Communication) communication circuit, Wi-Fi (Wireless-Fidelity) communication circuit, Zigbee (Zigbee) communication circuit may include
  • the first wireless communication unit 52 receives a location tracking command from the server 10 through the anchor node 11 .
  • the location tracking command may include information on at least one reference node 12 matched for each anchor node 11 .
  • the signal controller 54 may identify at least one reference node 12 adjacent to the ESL node 13 .
  • the location tracking command may be a wake-up signal transmitted by the anchor node 11 periodically or aperiodically.
  • the first wireless communication unit 52 may receive information on the article from the server 10 through the anchor node 11 , and in addition to this, may receive a control signal transmitted by the server 10 .
  • the second wireless communication unit 53 includes at least one component that directly communicates with at least one reference node 12 within a predetermined range.
  • the second wireless communication unit 53 may be a UWB (Ultra Wideband) communication circuit, but is not limited thereto, and other communication circuits having a communication range of 5 to 10 meters may be used.
  • UWB Ultra Wideband
  • the second wireless communication unit 53 detects a signal that the at least one reference node 12 periodically or aperiodically broadcasts (broadcasting). In addition, the second wireless communication unit 53 transmits a response signal (ack signal) in response to the detected signal. In addition, a response signal to the response signal may be received from at least one reference node 12 .
  • the signal controller 54 includes at least one component for controlling the overall operation of the ESL node 13 .
  • the signal controller 54 may be implemented including at least one processor (not shown) and a memory (not shown), and includes at least one logic circuit such as an Application-Specific Integrated Circuit (ASIC), FPGA It may be implemented as an integrated circuit such as a (field programmable gate array) or SoC (System on Chip).
  • ASIC Application-Specific Integrated Circuit
  • FPGA FPGA It may be implemented as an integrated circuit such as a (field programmable gate array) or SoC (System on Chip).
  • the signal control unit 54 identifies the at least one reference node based on the position tracking command. In addition, the signal control unit 54 calculates a distance value based on a difference value between the time the response signal is transmitted and the time the response signal is received. The calculated distance value may be transmitted to the server 10 through the first wireless communication unit 52 .
  • the signal control unit 54 may change the second wireless communication unit 53 to an active state after the location tracking command is received from the first wireless communication unit 52, and as a response signal is received, the second wireless communication unit ( 53) can be changed to inactive state.
  • the first wireless communication unit 52 and the second wireless communication unit 53 may be connected to an antenna, a filter, a multiplexer, an amplifier, an oscillator, etc. for transmitting and receiving a wireless communication signal.
  • an antenna a filter, a multiplexer, an amplifier, an oscillator, etc. for transmitting and receiving a wireless communication signal.
  • the operation of tracking the location of the ESL node may be generated by software and mounted on various electronic devices.
  • the ESL node receiving a location tracking command, the ESL node identifying at least one reference node mounted on a shelf of a predetermined location based on the location tracking command, the ESL node is the at least one reference node transmitting at least one response signal to at least one reference node in response to at least one Ultra Wideband (UWB) signal broadcast by the server, and at least one reference node and ESL calculated from the at least one response signal by the server
  • UWB Ultra Wideband
  • the non-transitory readable medium refers to a medium that stores data semi-permanently, rather than a medium that stores data for a short moment, such as a register, a cache, a memory, and the like, and can be read by a device.
  • a non-transitory readable medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, and the like.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé permettant de suivre l'emplacement d'un nœud d'étiquette électronique d'étagère (ESL) avec un système d'ESL. Le présent procédé comprend : une étape dans laquelle un nœud ESL reçoit une instruction de suivi d'emplacement ; une étape dans laquelle le nœud ESL identifie au moins un nœud de référence monté sur une étagère dans un emplacement prédéterminé, sur la base de la commande de suivi d'emplacement ; une étape dans laquelle le nœud ESL transmet au moins un signal de réponse auxdits nœuds de référence en réponse à au moins un signal à bande ultralarge (UWB) qui est diffusé par lesdits nœuds de référence ; et une étape dans laquelle un serveur reçoit des informations d'angle et des informations de distance entre le nœud d'ESL et lesdits nœuds de référence, calculées à partir desdits signaux de réponse, et calcule un emplacement d'étagère détaillé du nœud d'ESL.
PCT/KR2020/015083 2020-10-20 2020-10-30 Procédé de suivi d'emplacement d'étiquette électronique d'étagère et système d'étiquette électronique d'étagère associé WO2022085837A1 (fr)

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KR1020200135741A KR102398259B1 (ko) 2020-10-20 2020-10-20 전자선반라벨의 위치를 추적하는 방법 및 그 전자선반라벨 시스템
KR10-2020-0135741 2020-10-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024006095A1 (fr) * 2022-07-01 2024-01-04 Qualcomm Incorporated Balayage pour une transmission de balise à partir d'un dispositif pouvant se charger sans fil

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KR20100022888A (ko) * 2008-08-20 2010-03-03 숭실대학교산학협력단 쇼핑지원 기능을 갖는 선반단말장치 및 쇼핑지원시스템
KR20130022447A (ko) * 2011-08-24 2013-03-07 삼성전기주식회사 전자선반 관리시스템 및 관리방법
KR20170009045A (ko) * 2015-07-15 2017-01-25 엘지이노텍 주식회사 전자 가격 표시기, 전자 가격 표시 시스템 및 이의 동작 방법
KR20170025311A (ko) * 2015-08-28 2017-03-08 삼성전기주식회사 전자 라벨 장치 위치 관리 장치 및 방법
KR20170101051A (ko) * 2016-02-26 2017-09-05 엘지이노텍 주식회사 위치 정보를 생성하기 위한 전자 장치 및 그의 동작 방법

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Publication number Priority date Publication date Assignee Title
KR20100022888A (ko) * 2008-08-20 2010-03-03 숭실대학교산학협력단 쇼핑지원 기능을 갖는 선반단말장치 및 쇼핑지원시스템
KR20130022447A (ko) * 2011-08-24 2013-03-07 삼성전기주식회사 전자선반 관리시스템 및 관리방법
KR20170009045A (ko) * 2015-07-15 2017-01-25 엘지이노텍 주식회사 전자 가격 표시기, 전자 가격 표시 시스템 및 이의 동작 방법
KR20170025311A (ko) * 2015-08-28 2017-03-08 삼성전기주식회사 전자 라벨 장치 위치 관리 장치 및 방법
KR20170101051A (ko) * 2016-02-26 2017-09-05 엘지이노텍 주식회사 위치 정보를 생성하기 위한 전자 장치 및 그의 동작 방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024006095A1 (fr) * 2022-07-01 2024-01-04 Qualcomm Incorporated Balayage pour une transmission de balise à partir d'un dispositif pouvant se charger sans fil
US12086762B2 (en) 2022-07-01 2024-09-10 Qualcomm Incorporated Scanning for a beacon transmission from a wireless energy charging-capable device

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KR102398259B1 (ko) 2022-05-17

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