CN111612106B

CN111612106B - Position relation verification method, device, system and storage medium

Info

Publication number: CN111612106B
Application number: CN201910134397.6A
Authority: CN
Inventors: 韩建康
Original assignee: Alibaba Group Holding Ltd
Current assignee: Alibaba Group Holding Ltd
Priority date: 2019-02-22
Filing date: 2019-02-22
Publication date: 2023-06-20
Anticipated expiration: 2039-02-22
Also published as: WO2020168985A1; CN111612106A

Abstract

The embodiment of the application provides a position relation verification method, device, system and storage medium, wherein the system comprises: a server and a plurality of electronic shelf labels; each electronic shelf label is used for receiving the identification information sent by the first target electronic shelf label in the sight distance range based on the sight distance communication; the identification information of the first target electronic shelf label and the identification information of the first target electronic shelf label are used as relative position data to be sent to a server; and/or when the trigger event occurs, transmitting the identification information of the second electronic shelf label to a second target electronic shelf label in the sight distance based on the sight distance communication so that the second electronic shelf label can transmit the identification information of the second electronic shelf label and the received identification information to a server as relative position data; the server is used for determining the actual placement position relationship among the plurality of electronic shelf labels according to the received relative position data and checking the actual placement position relationship among the plurality of electronic shelf labels. Accordingly, verification efficiency and/or accuracy may be effectively provided.

Description

Position relation verification method, device, system and storage medium

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a method, an apparatus, and a system storage medium for verifying a positional relationship.

Background

With the increasing of the living standard of people, large-scale storage places such as markets, supermarkets and warehouses are continuously increased.

The electronic shelf label, electronic shelf label or electronic price label for short, is an electronic display device which is placed on a shelf and can replace the traditional paper price label. In the various places described above, electronic shelf labels may be used to manage and operate items on shelves. At present, workers in places usually put electronic shelf labels and articles according to display drawings. When the manager of the place needs to check whether the actual placement situation meets the requirement of the display drawing, the spot check or the inspection needs to be performed manually, so that the check efficiency is very low, and the accuracy of the check result is not high.

Disclosure of Invention

Aspects of the present application provide a method, apparatus, and system storage medium for verifying a positional relationship, so as to improve efficiency and/or accuracy in verifying a positional relationship in an article shelf.

The embodiment of the application provides an electronic label holding system, which comprises: a server and a plurality of electronic shelf labels deployed in the item shelves;

any one of the at least one electronic shelf label is used for receiving the identification information sent by the first target electronic shelf label in the sight distance range based on the sight distance communication; the identification information of the first target electronic shelf label and the identification information of the first target electronic shelf label are used as relative position data to be sent to the server; and/or when the trigger event occurs, transmitting the identification information of the second electronic shelf label to a second target electronic shelf label in the sight distance range based on the sight distance communication, so that the second electronic shelf label can transmit the identification information of the second electronic shelf label and the received identification information to the server as relative position data;

The server is used for determining the actual placement position relationship among the plurality of electronic shelf labels according to the received relative position data and checking the actual placement position relationship among the plurality of electronic shelf labels.

The embodiment of the application also provides a position relation verification method, which is suitable for the electronic shelf label and comprises the following steps:

receiving identification information sent by a first target electronic shelf label in a sight distance range based on sight distance communication;

and sending the identification information of the server and the identification information of the first target electronic shelf label to the server as relative position data so that the server can check the placement position relationship of the electronic shelf label according to the relative position data.

monitoring a set trigger event;

when a trigger event occurs, the self identification information is sent to a target electronic shelf label in the sight distance range based on sight distance communication, so that the target electronic shelf label sends the self identification information and the received identification information to the server as relative position data, and the server performs electronic shelf label placement position relation verification according to the relative position data.

The embodiment of the application also provides a position relation verification method, which is applicable to a server and comprises the following steps:

receiving relative position data sent by a plurality of electronic shelf labels, wherein the relative position data comprises identification information of the electronic shelf labels and identification information of the electronic shelf labels in the sight distance range of the electronic shelf labels;

and determining the actual placement position relationship among the plurality of electronic shelf labels according to the relative position data, and checking the actual placement position relationship among the plurality of electronic shelf labels.

The embodiment of the application also provides an electronic shelf label which comprises a memory, a processor and a vision distance communication device; the sight distance communication device comprises a sight distance receiving unit and/or a sight distance transmitting unit;

the memory is used for storing one or more computer instructions;

the processor is coupled to the memory for executing the one or more computer instructions for:

receiving the identification information sent by the first target electronic shelf sign in the sight distance range by utilizing the sight distance receiving unit; the identification information of the server and the identification information of the first target electronic shelf label are used as relative position data to be sent to the server, so that the server can check the placement position relationship of the electronic shelf label according to the relative position data; and/or the number of the groups of groups,

When a trigger event occurs, the sight distance sending unit is utilized to send the identification information of the second electronic shelf label to a second target electronic shelf label in the sight distance range, so that the second electronic shelf label can send the identification information of the second electronic shelf label and the received identification information to the server as relative position data, and the server can check the placement position relationship of the electronic shelf label according to the relative position data.

The embodiment of the application also provides a server, which comprises a memory, a processor and a communication component;

the memory is used for storing one or more computer instructions;

the processor is coupled with the memory and the communication component for executing the one or more computer instructions for:

Embodiments also provide a computer-readable storage medium storing computer instructions that, when executed by one or more processors, cause the one or more processors to perform the various aforementioned positional relationship verification methods.

In the embodiment of the application, the electronic labels deployed on the goods shelf can transmit the identification information based on the line-of-sight communication, and each electronic label can send the identification information of itself and the received identification information to the server as relative position data. Therefore, the server can obtain a large amount of relative position data capable of reflecting the position relation between each electronic shelf label and the electronic shelf labels within the viewing distance range, the server can determine the actual placement position relation among the plurality of electronic shelf labels according to the relative position data, and based on the relative position data, whether the actual placement position relation among the electronic shelf labels accords with the display drawing can be judged. Therefore, in the embodiment of the application, mutual positioning between the electronic shelf labels can be realized based on line-of-sight communication, so that the actual placement position relationship between the electronic shelf labels can be accurately determined, further, intelligent check and inspection on the placement condition of the article shelf can be realized, and the check efficiency and accuracy can be effectively improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

Fig. 1a is a schematic structural diagram of an electronic tag system according to an embodiment of the present disclosure;

fig. 1b is a schematic application state diagram of an electronic label holding system according to an embodiment of the present application;

fig. 2 is a schematic diagram of a communication state of a plurality of electronic tags 10 in a unidirectional communication mode in an electronic tag system according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a process of unidirectional communication between any two electronic tags 10 in the electronic tag system according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a data packet according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a video coding protocol according to an embodiment of the present application;

fig. 6 is a schematic diagram of communication states of a plurality of electronic tags 10 in a two-way communication mode in an electronic tag system according to an embodiment of the present application;

FIG. 7 is a schematic diagram illustrating a process of two-way communication between any two electronic tags 10 in the electronic tag system according to an embodiment of the present disclosure;

fig. 8 is a flow chart of a method for verifying a positional relationship according to another embodiment of the present application;

FIG. 9 is a flowchart illustrating another method for verifying a positional relationship according to another embodiment of the present disclosure;

FIG. 10 is a flowchart illustrating a method for verifying a positional relationship according to another embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of an electronic tag according to another embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of a server according to another embodiment of the present application.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

At present, when a manager needs to check whether the actual placement situation of the goods shelves accords with the display drawing, the manager needs to manually conduct spot check or inspection, so that the checking efficiency is very low, and the accuracy of the checking result is not high. To address the problems with the prior art, in some embodiments of the present application: the electronic shelf labels are arranged on the goods shelf, the identification information can be transmitted based on the visual range communication, and each electronic shelf label can transmit the identification information of the electronic shelf label and the received identification information to the server as relative position data. Therefore, the server can obtain a large amount of relative position data capable of reflecting the position relation between each electronic shelf label and the electronic shelf labels within the viewing distance range, the server can determine the actual placement position relation among the plurality of electronic shelf labels according to the relative position data, and based on the relative position data, whether the actual placement position relation among the electronic shelf labels accords with the display drawing can be judged.

The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

Fig. 1a is a schematic structural diagram of an electronic tag system according to an embodiment of the present application. As shown in fig. 1a, the system comprises: a server 11 and a plurality of electronic shelf labels 10.

In this embodiment, the plurality of electronic tags 10 may perform data transmission by using line-of-sight communication. The line-of-sight communication refers to that wireless signals are transmitted in a straight line between a transmitting end and a receiving end without shielding under the line-of-sight condition. Electronic shelf label 10 may communicate with other electronic shelf labels within its line of sight. In addition, the electronic tag 10 may also communicate with the server 11, where a wireless or wired network connection may be between the electronic tag 10 and the server 11. For example, the electronic tag 10 and the server 11 may implement transmission of relative position data through a wireless Access Point (AP). Of course, other network connection manners may be adopted between the electronic tag 10 and the server 11 to realize the transmission of the relative position data, such as a mobile network. The network system of the mobile network may be any one of 2G (GSM), 2.5G (GPRS), 3G (WCDMA, TD-SCDMA, CDMA1100, UTMS), 4G (LTE), 4g+ (lte+), wiMax, 5G, and future 6G or 7G.

Fig. 1b is a schematic application state diagram of an electronic tag system according to an embodiment. As shown in fig. 1b, a plurality of electronic tags 10 are disposed in the article shelf, and at least one electronic tag is taken as an example, and the installation position of each electronic tag 10 may correspond to one display position on the article shelf. Wherein the number of electronic shelf labels 10 may be determined based on the number of display positions in the item shelf that need to be checked, the number of electronic shelf labels 10 may be two or more. The arrangement of the plurality of electronic shelf labels 10 on the article shelves is flexibly adjustable.

In some practical applications, the administrator may pre-design the display drawing by using an auxiliary means of the display management software, so that the deployment structure of the plurality of electronic shelf labels 10 on the article shelf is represented by the display drawing, and a worker may deploy the electronic shelf labels 10 according to the display drawing. In order to reduce the operation complexity, the staff can guarantee to install the electronic shelf labels on each deployment position according to the deployment structure of the plurality of electronic shelf labels 10 on the article shelf represented by the display drawing, so that the staff does not need to distinguish different electronic shelf labels or pair the electronic shelf labels with the deployment positions, and the operation complexity is greatly reduced. Of course, the present embodiment is not limited thereto, and the display drawing may also represent the identifiers of the electronic tags paired at each deployment location, and the staff may install the plurality of electronic tags 10 at the respective corresponding deployment locations according to the identifiers of the electronic tags paired at each deployment location.

An exemplary deployment configuration is shown in fig. 1b, where the display positions of the article shelves are arranged in rows and columns, and the electronic shelf labels 10 are deployed in a one-to-one correspondence to the display positions, such that the deployment configuration of the electronic shelf labels 10 is also arranged in rows and/or columns. Of course, the deployment structure shown in fig. 1b is merely exemplary, and the electronic shelf labels 10 may not correspond to display positions one by one, and the electronic shelf labels 10 may be deployed according to other deployment rules, for example, may be deployed according to rules of interlaced deployment, spaced deployment, star deployment, etc., which are not limited in this embodiment, and the required deployment rules may be embodied in a display drawing. It should be noted that only one article shelf is shown in fig. 1b, but this should not limit the scope of protection of the present embodiment, in this embodiment, the number of article shelves may be plural, and accordingly, the electronic shelf labels 10 may be disposed on plural article shelves.

In order to realize the line-of-sight transmission, a line-of-sight communication device can be installed in each electronic frame tag 10, line-of-sight communication can be performed between the electronic frame tags 10 by using the line-of-sight communication device, and the line-of-sight communication device can comprise a line-of-sight transmitting unit and/or a line-of-sight receiving and transmitting unit. The line-of-sight communication device may be an infrared communication device, or may be any other communication device capable of supporting line-of-sight communication, which is not limited in this embodiment.

In this embodiment, the video communication functions supported by each electronic tag 10 may be different according to the different hardware structures.

For example, when only the viewing distance receiving unit is disposed on the electronic tag 10, the electronic tag 10 can only support the viewing distance receiving function.

For another example, when only the video transmission unit is disposed on the electronic tag 10, the electronic tag 10 can only support the video transmission function

For another example, when the sight distance receiving unit and the sight distance transmitting unit are disposed on the electronic tag 10, the electronic tag 10 can support the sight distance transmitting and receiving function.

Accordingly, according to the different viewing distance communication functions that can be supported by each electronic tag 10, at least the plurality of electronic tags 10 can be divided into the following three types:

the first type of electronic shelf label can be used for receiving the identification information sent by the first target electronic shelf label 10 in the sight distance range based on the sight distance communication; and transmits the own identification information and the identification information of the first target electronic tag 10 to the server 11 as relative position data.

The second type of electronic shelf label may be used to send its identification information to the second target electronic shelf label 10 within the line of sight based on line of sight communication when a triggering event occurs.

The third type of electronic shelf label can be used for transmitting the identification information of the third type of electronic shelf label to the second target electronic shelf label 10 in the sight range based on the sight communication when the trigger event occurs, and receiving the identification information transmitted by the first target electronic shelf label 10 in the sight range based on the sight communication; and transmits the own identification information and the identification information of the first target electronic tag 10 to the server 11 as relative position data.

And under the condition of hardware support, the identification information can be transferred between the electronic shelf labels. The identification information can be information which can embody identity such as equipment identification number and identity code of the electronic shelf label, and different electronic shelf labels can be distinguished based on the identification information. For the first type and the third type of electronic tags, the identification information of other electronic tags within the viewing range can be obtained, and the obtained identification information can effectively represent the relative positions of the electronic tags, so that the first type and the third type of electronic tags can send their own identification information and the received identification information to the server 11 as relative position data, so that the server 11 can determine the relative position relationship among the plurality of electronic tags 10.

In this embodiment, when the electronic shelf label 10 sends the relative position data to the server 11, the relative position data can be encrypted and signed, and the server 11 can directly analyze, process, store and respond the relative position data, so as to ensure that all intermediate forwarding devices between the electronic shelf label 10 and the server 11 cannot eavesdrop, forge and tamper, and the electronic shelf label has high safety and good concurrency performance, which lays a data security foundation for the server 11 to verify the position relationship.

Accordingly, the server 11 may receive a large amount of relative position data, and through the relative position data, the relative position between the electronic frame labels 10 may be determined, so as to determine the actual placement position relationship between the electronic frame labels 10, and verify the actual placement position relationship between the electronic frame labels 10. In some practical applications, the server 11 may compare the placement positions of the plurality of electronic shelf labels 10 included in the display drawing with the determined actual placement position relationship, and locate the difference point from the placement positions, so as to screen out the electronic shelf labels 10 placed in a way that the placement positions do not conform to the display drawing.

The server 11 obtains the item information of at least one item associated with each electronic shelf label 10, and generates an actual display relationship of each item in the item shelf based on the determined actual placement position relationship between the plurality of electronic shelf labels 10 and the item information of at least one item associated with each electronic shelf label 10, and checks the actual display relationship of each item in the item shelf. In some practical applications, the display drawing may further include a placement relationship between the articles on the article shelf, and the server 11 may compare the placement relationship between the articles on the article shelf included in the display drawing with the determined practical display relationship of the articles, and locate a difference point from the placement relationship, so as to screen out the articles which are placed in a manner not conforming to the display drawing.

On the article shelves, the display modes of the articles are various, and each display position can contain at least one article in terms of the dimension of the display position, when a single display position contains a plurality of articles, the articles can belong to the same article class, for example, a plurality of bottles of A-type milk can be placed on one display position; these items may also belong to different categories of items, for example bowls and chopsticks which can be sold in pairs may be placed in one display position. The present embodiment is not limited in this regard.

Accordingly, in some practical applications, the electronic label system may further include a handheld terminal, where the handheld terminal is configured to collect article information of any article in the article shelf, including coding information, belonging category, and so on; the handheld terminal may be further configured to collect identification information of the electronic shelf label 10 corresponding to the display position where each article is located, and send the article information and the identification information of the electronic shelf label 10 to the server 11 in an associated manner. The server 11 can obtain the article information of at least one article associated with each electronic shelf label 10 according to the information, so that when the position relationship of the article shelf is verified, the actual display relationship of each article can be accurately determined according to the actual placement position relationship among the plurality of electronic shelf labels 10.

In this embodiment, the plurality of electronic tags 10 disposed on the goods shelf can transmit the identification information based on the line-of-sight communication, so that a large amount of relative position data which can reflect the position relationship between each electronic tag 10 and the electronic tags 10 within the line-of-sight range can be obtained. These relative position data are sent to the server 11, and the server 11 can determine the actual placement relationship between the plurality of electronic shelf labels 10 according to these relative position data, and based on this, can determine whether the actual placement relationship between the electronic shelf labels 10 conforms to the display drawing. Therefore, in the embodiment of the application, mutual positioning between the electronic shelf labels 10 can be realized based on line-of-sight communication, so that the actual placement position relationship between the electronic shelf labels 10 can be accurately determined, further, intelligent verification and inspection of the placement condition of the article shelf can be realized, and the verification efficiency and accuracy can be effectively improved.

In the above or the following embodiments, for each electronic tag 10, it is possible to support the line-of-sight communication function in a plurality of directions, and for convenience of description, the direction in which the line-of-sight communication function is supported on the electronic tag 10 is described as the data transmission direction, for example, when the line-of-sight communication means are disposed on the four upper, lower, left, and right sides of the electronic tag 10, the electronic tag 10 may support the line-of-sight communication function in the four data transmission directions thereon, and thereon. The line-of-sight communication devices configured by the electronic tag 10 in different data transmission directions may not be identical, and accordingly, the line-of-sight communication functions supportable by the electronic tag 10 in different data transmission directions may not be identical.

For example, if the electronic tag 10 is mounted with the viewing distance transmitting unit and the viewing distance receiving unit on both upper and lower sides, the electronic tag 10 can support the two-way communication mode in both upper and lower data transmission directions.

For another example, if only the viewing distance transmitting unit is mounted on the left side surface of the electronic tag 10, the electronic tag 10 can support only the one-way communication mode in the data transmission direction in the left direction.

For another example, if only the viewing distance receiving unit is mounted on the right side of the electronic tag 10, the electronic tag 10 can support only the unidirectional communication mode in the right data transmission direction.

Accordingly, the electronic shelf labels 10 with overlapping sight distance ranges can adopt the bidirectional communication mode or the unidirectional communication mode according to the sight distance communication functions supported by the electronic shelf labels 10.

When any one of the electronic tags 10 having overlapping viewing ranges supports only a one-way communication mode in a data transmission direction opposite to the other, the one-way communication mode may be adopted between the two electronic tags 10.

In the unidirectional communication mode, the two electronic tags 10 may be divided into a sender and a receiver: the sender can send the identification information to the receiver; the receiving party can receive the identification information sent by the sending party without returning the identification information of the receiving party to the sending party.

Fig. 2 is a schematic diagram of a communication state of a plurality of electronic tags 10 in a unidirectional communication mode in an electronic tag system according to an embodiment. Fig. 2 shows a unidirectional communication state between a plurality of electronic shelf labels 10 disposed on one article shelf, for example, a sight distance transmitting unit tx and a sight distance receiving unit rx are respectively configured on opposite sides between an electronic shelf label a and an electronic shelf label B, and only a unidirectional communication mode can be supported between the two, so that between the electronic shelf labels a and B, a can serve as a transmitting party, B can serve as a receiving party, a can transmit own identification information to B, and B can receive identification information of a. For another example, between electronic shelf labels D and E, E acts as a sender, D acts as a receiver, E may send its own identification information to D, and D may receive the identification information of E. Based on the unidirectional communication state shown in fig. 2, the electronic tag D in fig. 2 can obtain the identification information of the electronic tags C, I and E, and the electronic tag D shares the identification information of itself to the electronic tags H and F, but does not obtain the identification information of any other electronic tags. Thus, the electronic tag C in fig. 2 may be classified as the first type of electronic tag in the foregoing embodiment, the electronic tag G in fig. 2 may be classified as the second type of electronic tag in the foregoing embodiment, and the other electronic tags may be classified as the third type of electronic tag.

It should be noted that, although all the electronic tags shown in fig. 2 indicate a unidirectional communication path, this is only for highlighting the communication status of the unidirectional communication mode, and should not limit the protection scope of the present embodiment. It should be understood that, in this embodiment, the line-of-sight communication modes used in different data transmission directions of any one electronic tag 10 may not be identical, and are not limited to the communication state shown in fig. 2 in which a unidirectional transmission mode is used in each data transmission direction.

Fig. 3 is a schematic diagram illustrating a process of unidirectional communication between any two electronic tags 10 in the electronic tag system according to an embodiment of the present application.

As shown in fig. 3, the two electronic tags 10 include a sender and a receiver. For the electronic tag 10 as a transmitting side, the own identification information may be cyclically output in the output slot. For the electronic shelf label 10 as the receiving party, the line-of-sight receiving function may be started in the listening slot to receive the identification information sent by the transmitting party.

The starting point of the output time slot of the sender is when the trigger event occurs. The triggering event may be that a preset positioning period in the sender arrives, or that a positioning instruction issued by the server 11 is received, which is not limited in this embodiment, and the sender may automatically start the sending operation of the identification information at regular time, or may start the sending operation of the identification information according to a related instruction of the server 11.

In addition, the output time slot of the sender is larger than the sleep time slot of the receiver, and the output time slot of the sender is not limited by the interception time slot and the sleep time slot of the electronic shelf label 10. . The sleep time slot refers to a period when the electronic tag 10 is in a deep sleep state. In this embodiment, in order to reduce the power consumption of the electronic tag 10, a timer may be set in the electronic tag 10, the electronic tag 10 may wake up at a timing under the timing of the timer, enter a listening slot, and in the listening slot, the electronic tag 10 may receive data; the period outside the interception time slot is a dormant time slot, in the dormant time slot, the current of the electronic tag 10 can reach 4uA, which is 3 orders of magnitude lower than the current of 5mA in the interception time slot, so that the power consumption can be effectively reduced when the electronic tag 10 is in the dormant time slot. In addition, in this embodiment, the length of the listening slot may be set to be short enough under the condition of meeting the working requirement, for example, the length of the listening slot may be 2-3 orders of magnitude shorter than the length of the sleep slot, which may further reduce the overall power consumption of the electronic tag 10.

Based on this, as shown in fig. 3, the sender circularly sends its own identification information in the output time slot 26s, and since the sleep time slot of the receiver is 25s, it can be ensured that the receiver can enter the listening time slot at least within the last 1s of the output time slot of the sender, so that the receiver can successfully receive the identification information sent by the sender.

It should be noted that, when the receiving side listens to the sending side to send the identification information, the working state of the receiving side may not be controlled by the listening time slot, that is, whether the listening time slot is enough to complete the work of receiving the identification information of the sending side, the receiving side may keep the working state until the receiving work of the identification information of the sending side is completed.

Accordingly, in this embodiment, the receiving process of the identification information may be compressed in the normal active period of the electronic tag 10, and the receiving process of the identification information may not increase the power consumption of the electronic tag 10 in the listening time slot, which may effectively maintain the continuous and stable low power consumption state of the electronic tag 10.

In the process of transmitting the identification information between the sender and the receiver, the embodiment is not limited to the information format of the identification information, for example, the identification information may be integrally carried in one data packet for transmission, and of course, the identification information may also be transmitted in other information formats. In one implementation, the sender may split its own identification information into N data segments, N being a positive integer; determining the serial numbers corresponding to the N data segments according to the arrangement sequence of the N data segments; respectively carrying out data coding according to the N data segments and the serial numbers corresponding to the N data segments so as to obtain N data packets; and transmitting the N data packets to a receiving party.

As shown in fig. 3, the identification information of the sender is carried in 6 data packets, and the sender can output the 6 data packets in a sequential cycle in the output gap. When the receiving party enters the interception time slot, the receiving party may first receive a non-first data packet in the 6 data packets, in fig. 3, the receiving party first receives the 1 st data packet when entering the interception time slot, at this time, the receiving party may continue to receive the subsequent data packets of the sending party, namely, the 2 nd to 6 th data packets, until the receiving work of the 6 data packets is completed. The receiving side can judge whether the receiving work of all the data packets is completed or not according to the serial numbers in the data packets. After the receiving work of the data packet is completed, the receiving party can inform the sending party that the receiving work is completed, and the sending party stops outputting the data packet; of course, the receiving side may not notify the transmitting side, and the transmitting side may stop outputting the data packet after the output slot ends.

Fig. 4 is a schematic diagram of a data packet according to an embodiment. As shown in fig. 4, each data packet may include a start bit, a sequence number, and a data segment. In the figure, "11" is used as a start bit, followed by a sequence number, which is used to characterize the position of the current data segment in the identification information, and the sequence number is followed by the data segment. Parity bits may also be included in the data packet to verify the integrity of the data packet. The end of the data packet can also be characterized by a blank interval after the data segment to achieve segmentation.

In the process of unidirectional communication between two electronic tags 10 in fig. 3, a data packet structure as shown in fig. 4 is adopted. In fig. 3, the identification information of the sender is 0X112233445566, the sender splits the identification information into 6 data segments "11", "22", "33", "44", "55" and "66", and according to the arrangement sequence of the 6 data segments, the sequence number corresponding to each data segment can be determined, and accordingly, at least bytes included in the first data packet include: 11000000010001 the bytes contained in the second packet include: 11000100100010, the other data packets are not described in detail.

Fig. 5 is a schematic diagram of a line-of-sight communication encoding protocol according to an embodiment. As shown in fig. 5, according to the data packet structure of fig. 4, the line-of-sight transmitting unit of the electronic tag 10 may use PWM pulse output, and transmit the data packet according to manchester encoding, that is, the logic 1 and the logic 0 in the data packet are represented by the level change, so as to form a data stream, thereby implementing line-of-sight transmission of the data packet. Of course, the present embodiment is not limited thereto.

Hereby, one-way communication between the two electronic tags 10 is achieved. In the one-way communication mode, the electronic shelf label 10 as the receiving side may transmit its own identification information and the received identification information to the server 11 after receiving the identification information transmitted by the electronic shelf label 10 as the transmitting side. Referring to fig. 3, it can be seen that the electronic tag 10 as the receiving party may receive a plurality of identification information, for example, the electronic tag D in fig. 3 may receive 3 identification information, in which case, the electronic tag D may send all the received identification information to the server 11.

When two vision distance ranges exist and the two-way communication mode is supported in the data transmission directions of the electronic shelf label 10 opposite to each other, the two-way communication mode can be adopted between the two electronic shelf labels 10.

In the two-way communication mode, the two electronic tags 10 can communicate identification information with each other.

Fig. 6 is a schematic diagram of a communication state of a plurality of electronic tags 10 in a two-way communication mode in an electronic tag system according to an embodiment. Fig. 6 shows a two-way communication state between a plurality of electronic shelf labels 10 disposed on one article shelf, for example, the two-way communication mode can be supported by arranging the sight distance transmitting unit tx and the sight distance receiving unit rx on opposite sides between the electronic shelf label a and the electronic shelf label B, so that the electronic shelf labels a and B can transmit their own identification information to B and B can receive the identification information of a; meanwhile, B may transmit its own identification information to a, and a may receive the identification information of B. Based on the two-way communication state shown in fig. 6, the electronic shelf label D in fig. 6 can obtain the identification information of the electronic shelf labels C, I and E, and the electronic shelf label D shares the identification information of itself to the electronic shelf labels C, I and E. Accordingly, all of the electronic tabs 10 in FIG. 6 may be categorized as the third type of electronic tabs described above.

Also, it should be noted that, although all the electronic tags shown in fig. 6 indicate a bidirectional communication path, this is only for highlighting the communication status of the bidirectional communication mode, and should not limit the protection scope of the present embodiment. It should be understood that, in this embodiment, the line-of-sight communication modes used in different data transmission directions of any one electronic tag 10 may not be identical, and are not limited to the communication state shown in fig. 6 in which the bidirectional transmission mode is used in each data transmission direction.

In addition, in this embodiment, in order to improve the adaptability of the electronic tag system to different application scenarios, the line-of-sight communication mode adopted between two electronic tags 10 with overlapping line-of-sight ranges may be automatically determined based on the actual placement relationship between each electronic tag 10 in the electronic tag system and the line-of-sight communication mode supported by each electronic tag 10, for example, in the actual placement relationship, the line-of-sight ranges of the electronic tag a and the electronic tag b overlap, and if the hardware structures on opposite sides of the two devices can only support the unidirectional communication mode, the unidirectional communication mode is automatically adopted between the two devices; if the hardware structures on the opposite sides of the two can support a two-way communication mode, the two-way communication mode is automatically adopted between the two; if the hardware structures on the opposite sides of the two are not capable of supporting any communication mode, for example, the line-of-sight receiving units are disposed on the opposite sides of the two, line-of-sight communication cannot be performed between the two. Of course, the embodiment is not limited to the implementation manner of automatically determining the line-of-sight communication mode, in the embodiment, the line-of-sight communication mode of each electronic shelf label in each data transmission direction can be marked in the display drawing, and a worker can install the electronic shelf labels according to the display drawing so that each electronic shelf label can communicate according to the line-of-sight communication mode marked in the display drawing; the mode of sending the mode control instruction to each electronic shelf can be further adopted by the server to adjust the line-of-sight communication mode of each electronic shelf label in different data transmission directions according to the need, and the like.

Fig. 7 is a schematic diagram of a process of performing two-way communication between any two electronic tags 10 in the electronic tag system according to an embodiment of the present application.

As shown in fig. 7, either one of the two electronic shelf labels 10 may be set as an initiator, and the other as a responder. For the initiator, when the trigger event occurs, the information interaction request can be circularly output in the output time slot until the consent indication sent by the responder is received, and when the consent indication sent by the responder is received, the identification information is exchanged with the responder. For the responder, the line-of-sight receiving function can be started in the interception time slot so as to receive the information interaction request sent by the sender; and when receiving the information interaction request, sending an agreement instruction to the initiator so as to exchange identification information with the initiator.

The starting point of the output time slot of the initiator is when the trigger event occurs. The triggering event may be that a preset positioning period in the initiator arrives, or that a positioning instruction issued by the server 11 is received, which is not limited in this embodiment, and the initiator may automatically start the sending operation of the information interaction request at regular time, or may start the sending operation of the information interaction request according to the related instruction of the server 11.

In addition, the output time slot of the initiator is larger than the sleep time slot of the responder, and the output time slot of the initiator is no longer limited by the interception time slot and the sleep time slot of the electronic shelf label 10 itself. For the relevant description of the listening slots and sleep slots of the electronic tag 10, reference is made to the foregoing, and no further description is given here.

Based on this, as shown in fig. 6, the initiator sends the information interaction request in the output time slot 26s in a circulating manner, and because the dormancy time slot of the responder is 25s, it can be ensured that the responder can enter the interception time slot at least within the last 1s of the output time slot of the initiator, so that the responder can successfully receive the information interaction request sent by the initiator. When receiving the information interaction request of the initiator, the responder can transmit an agreement instruction back to the initiator, so that an identification information exchange channel between the two parties is established, and the two parties can exchange identification information by utilizing the identification information exchange channel.

It should be noted that, after the initiator and the responder establish the identification information exchange channel, the working state of the initiator may not be limited by the output time slot any more, and the working state of the responder may not be limited by the interception time slot any more. That is, whether the output time slot of the initiator or the interception time slot of the responder is enough to complete the work of receiving the identification information of the sender, both parties can keep in the working state until the exchange of the identification information is completed.

In the process of transmitting the identification information by the initiator and the responder, the embodiment is not limited to the information format of the identification information, for example, the identification information may be integrally carried in one data packet for transmission, and of course, the identification information may also be transmitted in other information formats. In one implementation, both the initiator and the responder may split their own identification information into N data segments, where N is a positive integer; determining the serial numbers corresponding to the N data segments according to the arrangement sequence of the N data segments; respectively carrying out data coding according to the N data segments and the serial numbers corresponding to the N data segments so as to generate N data packets; the two parties may exchange N data packets that are each generated.

Based on the N data packets generated by each of the two parties, the initiator may carry its first data packet in the information exchange request, and the responder may carry its first data packet in the grant indication. Thus, both sides can confirm that the identification information exchange channel is established by exchanging the first data packet, and then both sides can exchange the remaining N-1 data packets.

For example, as shown in fig. 7, the identification information of the initiator is carried in 6 data packets, and the initiator can cyclically output the 1 st data packet in the output gap. When the responder enters the interception time slot, the responder may receive the first data packet of the initiator, and at this time, the responder may reply its own first data packet to the initiator, so that the responder may successfully establish the identifier information exchange channel and may exchange the remaining 5 data packets.

For each remaining N-1 data packets, both sides can exchange data packets one by one in the order of the data packets in the manner shown in fig. 7. Of course, the two parties may exchange the remaining N-1 data packets in other ways, which is not limited in this embodiment. For example, the responder may send its own remaining N-1 data packets to the initiator after all of the remaining N-1 data packets have been received by the initiator.

The initiator and the responder can judge whether the receiving work of all the data packets is finished according to the serial numbers in the data packets. After the reception of the packet is completed, both sides stop outputting the packet. In addition, the structure and coding protocol of the data packet in the process of exchanging the identification information between the two parties may refer to the foregoing description, and will not be described herein.

Accordingly, two-way communication between the two electronic tags 10 can be achieved. In the two-way communication mode, both parties can acquire the identification information of the other party and send to the server 11. Referring to fig. 6, each electronic tag 10 may receive a plurality of identification information, for example, the electronic tag I in fig. 6 may receive 4 identification information, in which case the electronic tag I may send all the received identification information to the server 11.

It should be noted that, although fig. 2 and 6 show the communication states of the plurality of electronic tags 10 in the two-way communication mode, respectively. However, this does not mean that only one communication mode exists between the plurality of electronic tags 10, and the communication mode can be flexibly set between the electronic tags 10 in which any two vision distance ranges in the plurality of electronic tags 10 overlap. For example, a unidirectional communication mode may be employed between a and B in fig. 2, and a bidirectional communication mode may be employed between a and H in fig. 2.

Fig. 8 is a flowchart of a method for verifying a positional relationship according to another embodiment of the present application. As shown in fig. 8, the method may be applied to an electronic tag, and the method includes:

100. receiving identification information sent by a first target electronic shelf label in a sight distance range based on sight distance communication;

101. And sending the identification information of the electronic shelf label and the identification information of the first target electronic shelf label to a server as relative position data so that the server can check the placement position relationship of the electronic shelf label according to the relative position data.

The position relation verification method provided by the embodiment can be applied to various scenes needing position relation verification, such as article position relation verification in a large storage place, electronic shelf label position relation verification and the like, and the embodiment is not limited to the position relation verification.

In this embodiment, the electronic shelf label is disposed in the article shelf, and may form an electronic shelf label system with other electronic shelf labels and the server in the article shelf, where the electronic shelf label in this embodiment may perform line-of-sight transmission with other electronic shelf labels in the electronic shelf label system, and may also perform communication with the server. The installation position of the electronic shelf label on the goods shelf can correspond to a display position on the goods shelf, and the deployment position of the electronic shelf label on the goods shelf can be flexibly adjusted. In some practical applications, the administrator can design the display drawings in advance by using an auxiliary means of display management software, so that the arrangement structure of each electronic shelf label on the goods shelf in the electronic shelf label system is represented by the display drawings, and staff can arrange the electronic shelf labels according to the display drawings.

In order to realize the sight distance transmission, a sight distance communication device can be arranged in the electronic shelf label, and the electronic shelf label can carry out sight distance communication with the electronic shelf label in the sight distance range by utilizing the sight distance communication device. In this embodiment, the electronic shelf may receive the identification information sent by the first target electronic shelf label in the viewing range based on the viewing range communication, and send the identification information of the electronic shelf label and the identification information of the first target electronic shelf label to the server as the relative position data.

When the electronic shelf label sends relative position data to the server, the relative position data can be encrypted and signed, and the server can directly analyze, process, store, respond and the like the relative position data, so that the fact that all intermediate forwarding equipment between the electronic shelf label and the server cannot be eavesdropped, forged and tampered is guaranteed, the safety is high, the concurrency performance is good, and a data safety foundation is laid for the server to verify the position relationship.

Accordingly, the server can receive a large amount of relative position data, and the relative position between every two electronic shelf labels can be determined according to the relative position data, so that the actual placement position relationship among a plurality of electronic shelf labels can be determined, and the actual placement position relationship among the plurality of electronic shelf labels is checked. In some practical applications, the server can compare the deployment structures of the plurality of electronic shelf labels on the goods shelves contained in the display drawing with the determined practical placement position relationship, and locate the difference point positions from the deployment structures, so as to screen out the electronic shelf labels which are placed in a way of not conforming to the display drawing.

In this embodiment, the electronic shelf label may receive the identification information sent by other electronic shelf labels within the viewing range based on the viewing range communication, and may send the own identification information and the received identification information to the server, so that the server may obtain relative position data capable of reflecting the positional relationship between the electronic shelf label and other electronic shelf labels within the viewing range. The server can determine the actual placement position relation between the electronic shelf labels and other electronic shelves according to the relative position data, and based on the actual placement position relation, whether the actual placement position of the electronic shelf labels accords with the display drawing or not can be judged. Therefore, in the embodiment of the application, mutual positioning between the electronic shelf labels can be realized based on line-of-sight communication, so that the actual placement position relationship between the electronic shelf labels can be accurately determined, further, intelligent check and inspection on the placement condition of the article shelf can be realized, and the check efficiency and accuracy can be effectively improved.

In the above or below embodiments, the electronic shelf label may further monitor a preset trigger event, and when the trigger event occurs, send its own identification information to the second target electronic shelf label within the line of sight based on line of sight communication.

The triggering event may be that a preset positioning period in the electronic tag arrives, or that a positioning instruction issued by the server is received, which is not limited in this embodiment. The electronic shelf label can automatically start the sending operation of the identification information at fixed time, and can also start the sending operation of the identification information according to the related instructions of the server.

For the electronic tag, the view distance communication function may be supported in multiple directions, and for convenience of description, the direction of supporting the view distance communication function on the electronic tag is described as a data transmission direction, for example, when the view distance communication devices are configured on the upper, lower, left and right sides of the electronic tag, the electronic tag may support the view distance communication function in the upper, lower, left and right data transmission directions. The line-of-sight communication devices configured by the electronic shelf labels in different data transmission directions can be different, and accordingly, the line-of-sight communication functions supportable by the electronic shelf labels in different data transmission directions can be different.

For example, if the sight distance transmitting unit and the sight distance receiving unit are mounted on both upper and lower sides of the electronic tag, the electronic tag can support a two-way communication mode in both upper and lower data transmission directions.

For another example, if only the video transmission unit is mounted on the left side surface of the electronic tag, the electronic tag can support only the unidirectional communication mode in the data transmission direction in the left direction.

Accordingly, when the communication mode of the electronic shelf label in a certain data transmission direction is a one-way communication mode, the electronic shelf label is used as one end of the data transmission, and identification information is transmitted between the electronic shelf label and the electronic shelf label at the other end of the data transmission. For convenience of description, the electronic shelf labels at two ends of the data transmission are respectively referred to as a sender and a receiver, where the electronic shelf labels in the embodiment may be used as the sender or the receiver. The communication procedure of the sender and the receiver will be described in detail below.

In the unidirectional communication mode, the sender can send the identification information to the receiver; the receiving party can receive the identification information sent by the sending party without returning the identification information of the receiving party to the sending party. Accordingly, when the electronic shelf label is used as a receiver, when the electronic shelf label is in a one-way communication mode, the video distance receiving function can be started in the interception time slot so as to receive the identification information sent by the sender; when the electronic frame tag is used as a sender, the self identification information can be circularly output in the output time slot so that the receiver receives the identification information, wherein the output time slot is larger than the dormancy time slot of the receiver when the starting point of the output time slot is the occurrence of a trigger event.

In addition, when the electronic tag is used as a sender, the output time slot is larger than the sleep time slot of a receiver, and the output time slot is not limited by the interception time slot and the sleep time slot of the electronic tag. The sleep time slot refers to a period when the electronic shelf label is in a deep sleep state. In this embodiment, in order to reduce power consumption of the electronic tag, a timer may be set in the electronic tag, the electronic tag may wake up at a fixed time under the fixed time wake-up of the timer, and enter a listening slot, where the electronic tag may receive data; the period outside the interception time slot is a dormant time slot, and in the dormant time slot, the current of the electronic shelf label can reach 4uA and is 3 orders of magnitude lower than the current of 5mA in the interception time slot, so that the power consumption can be effectively reduced when the electronic shelf label is in the dormant time slot. In addition, in this embodiment, the length of the listening slot may be set to be short enough under the condition of meeting the working requirement, for example, the length of the listening slot may be 2-3 orders of magnitude shorter than the length of the sleep slot, which may further reduce the overall power consumption of the electronic shelf label.

Based on the above, when the electronic shelf label is used as the sender, the output time slot is larger than the dormant time slot of the receiver, so that the receiver can enter the interception time slot in the output time slot of the sender, and the receiver can successfully receive the identification information sent by the sender.

It should be noted that, when the electronic shelf label is taken as the receiving party and the sending party is sending the identification information to the receiving party, the working state of the electronic shelf label can not be controlled by the interception time slot any more, that is, whether the interception time slot is enough for completing the work of receiving the identification information of the sending party or not, the electronic shelf label can be kept in the working state until the receiving work of the identification information of the sending party is completed.

Accordingly, in this embodiment, the receiving process of the identification information may be compressed in the normal active period of the electronic tag, and the receiving process of the identification information may not increase the power consumption of the electronic tag in the listening slot, which may effectively maintain the continuous and stable low power consumption state of the electronic tag.

In the process of transmitting the identification information by the electronic tag, the embodiment is not limited to the information format of the identification information, for example, the identification information may be integrally carried in one data packet for transmission, and of course, the identification information may also be transmitted in other information formats. In one implementation, when the electronic tag is used as a sender, the identification information of the electronic tag can be split into N data segments, wherein N is a positive integer; determining the serial numbers corresponding to the N data segments according to the arrangement sequence of the N data segments; respectively carrying out data coding according to the N data segments and the serial numbers corresponding to the N data segments so as to obtain N data packets; and transmitting the N data packets to a receiving party. Similarly, when the electronic shelf label is used as the receiving party, the N data packets sent by the sending party can be received.

For example, when the electronic tag is used as a sender, the identification information may be split into 6 data segments to generate 6 data packets, and the electronic tag may sequentially and circularly output the 6 data packets in an output gap. When the receiving party enters the interception time slot, the receiving party may first receive a non-first data packet in the 6 data packets, and at this time, the receiving party may continue to receive the subsequent data packets of the sending party, that is, the 1 st to 5 th data packets, until the receiving work of the 6 data packets is completed. When the electronic frame label is used as a receiving party, whether the receiving work of all the data packets is finished can be judged according to the serial numbers in the data packets, and after the receiving work of the data packets is finished, the electronic frame label can inform a sending party that the receiving work is finished, and the sending party stops outputting the data packets; of course, the electronic shelf label may not notify the sender that the sender will stop outputting the data packet after the output time slot is finished.

In some implementations, each data packet may include a start bit, a sequence number, and a data segment. The start bit is followed by a sequence number that characterizes the position of the current data segment in the identification information, followed by the data segment. Parity bits may also be included in the data packet to verify the integrity of the data packet. The end of the data packet can also be characterized by a blank interval after the data segment to achieve segmentation.

For example, when the electronic tag is used as the sender, the identification information of the electronic tag is split into 6 data segments "11", "22", "33", "44", "55" and "66", and according to the arrangement sequence of the 6 data segments, the serial number corresponding to each data segment can be determined, so that at least bytes included in the first data packet include: 11000000010001 the bytes contained in the second packet include: 11000100100010, the other data packets are not described in detail.

When the electronic shelf label is used as a sender, the electronic shelf label can be communicated with a receiver according to a agreed communication coding protocol. The electronic frame tag can adopt PWM pulse output and transmit the data packet according to a Manchester coding mode, namely, the logic 1 and the logic 0 in the data packet are represented by the change of the level so as to form a data stream, thereby realizing the line-of-sight transmission of the data packet. Of course, the present embodiment is not limited thereto.

Accordingly, one-way communication between the electronic shelf label and the electronic shelf label in the sight range can be realized. In the unidirectional communication mode, when the electronic shelf label is taken as a receiver, after receiving the identification information sent by the electronic shelf label taken as a sender, the electronic shelf label can send the identification information of the electronic shelf label and the received identification information to a server. The electronic tag may receive a plurality of identification information when it is used as a receiving party, in which case the electronic tag may send all the received identification information to the server.

When the communication mode of the electronic shelf label in a certain data transmission direction is a two-way communication mode, the electronic shelf label exchanges identification information between the electronic shelf label and the electronic shelf label in the sight distance range in the data transmission direction. For convenience of description, the electronic shelf labels at two ends of the two-way communication are respectively referred to as a sender and a receiver, where the electronic shelf labels in the embodiment may be used as an initiator of the two-way communication, that is, a party for starting the two-way communication, and may also be used as a responder. The bidirectional communication procedure between the initiator and the responder will be described in detail below.

In the two-way communication mode, the two electronic tags can mutually transmit identification information. When the electronic shelf sign is used as a response party, the electronic shelf sign can start a sight distance receiving function in a interception time slot to receive an information interaction request sent by an initiator in a sight distance range; sending an agreement instruction to the initiator to establish an identification information exchange channel with the initiator; and exchanging the identification information with the initiator by using the identification information exchange channel to obtain the identification information of the initiator. When the electronic frame tag is used as an initiator, the information interaction request can be circularly output in an output time slot, and when the starting point of the output time slot is a trigger event, the output time slot is larger than the dormancy time slot of a responder in the sight distance range; and exchanging identification information with the responding party when receiving the consent indication sent by the responding party.

The starting point of the output time slot of the initiator is when the trigger event occurs. The triggering event may be that a preset positioning period in the initiator arrives, or that a positioning instruction issued by the server is received, which is not limited in this embodiment, and the initiator may automatically start the sending operation of the information interaction request at regular time, or may start the sending operation of the information interaction request according to the related instruction of the server.

In addition, when the electronic tag is used as an initiator, the output time slot of the electronic tag is larger than the dormancy time slot of the responder, and the output time slot of the electronic tag is not limited by the interception time slot and the dormancy time slot of the electronic tag. For the relevant description of the listening time slot and the sleep time slot of the electronic tag, reference is made to the foregoing, and details are not repeated here.

Based on the information interaction request, when the electronic shelf label is used as an initiator, the information interaction request can be circularly sent in the output time slot, and the responder can enter the interception time slot at least in the output time slot of the electronic shelf label because the dormant time slot of the responder is smaller than the output time slot of the electronic shelf label, so that the responder can successfully receive the information interaction request sent by the electronic shelf label. When the electronic shelf label is used as a response party, when an information interaction request of an initiator is received, an agreement instruction can be returned to the initiator, so that an identification information exchange channel between the two parties is established, and the two parties can exchange identification information by utilizing the identification information exchange channel.

It should be noted that, after the information exchange channel is identified, the working state of the electronic tag may no longer be limited by the output time slot and/or the listening time slot. That is, whether the output time slot and/or the listening time slot of the electronic tag are sufficient for completing the transmission of the identification information, the electronic tag can be continuously maintained in the working state until the transmission of the identification information is completed.

In the process of transmitting the identification information by the electronic tag, the embodiment is not limited to the information format of the identification information, for example, the identification information may be integrally carried in one data packet for transmission, and of course, the identification information may also be transmitted in other information formats. In one implementation, the electronic shelf label can split its own identification information into N data segments, where N is a positive integer; determining the serial numbers corresponding to the N data segments according to the arrangement sequence of the N data segments; respectively carrying out data coding according to the N data segments and the serial numbers corresponding to the N data segments so as to generate N data packets; the electronic shelf label can exchange N data packets generated by the electronic shelf label in the visual range in a two-way communication mode.

When the electronic shelf label is used as an initiator, the electronic shelf label can carry the first data packet in the information exchange request, and when the electronic shelf label is used as a responder, the electronic shelf label can carry the first data packet in the consent indication. In this way, in the bidirectional communication mode, the first data packet can be exchanged to confirm that the identification information exchange channel is established, and then the electronic shelf label can exchange the remaining N-1 data packets with the electronic shelf label within the viewing range.

For example, the electronic shelf label may split its own identification information into 6 data segments to generate 6 data packets. When the electronic frame tag is used as an initiator, the 1 st data packet can be circularly output in an output gap, and when a responder enters a interception time slot, the responder possibly receives the first data packet of the initiator, at the moment, the responder can reply the first data packet of the responder to the electronic frame tag, so that the responder and the responder can successfully establish an identification information exchange channel and exchange the remaining 5 data packets.

For each remaining N-1 data packets, both parties can exchange data packets one by one according to the sequence of the data packets. Of course, the two parties may exchange the remaining N-1 data packets in other ways, which is not limited in this embodiment. For example, the responder may send its own remaining N-1 data packets to the initiator after all of the remaining N-1 data packets have been received by the initiator.

The electronic shelf label can judge whether the exchange work of all the data packets is completed according to the serial numbers in the data packets. After the exchange of the data packets is completed, the electronic shelf label stops transmitting the data packets. In addition, the structure and coding protocol of the data packet of the electronic tag in the bidirectional communication mode may be referred to the foregoing description, and will not be described herein.

Accordingly, the two-way communication between the electronic shelf label and the electronic shelf label in the sight range can be realized. In the two-way communication mode, the electronic shelf label can acquire the identification information of the other party and send the identification information to the server. Each electronic shelf label may receive a plurality of identification information, in which case the electronic shelf label may send all of the received identification information to the server.

It should be noted that although two communication modes of the electronic tag are described above separately. However, this does not represent that the electronic tag can only use one of the communication modes, and different communication modes can be used in different data transmission directions of the electronic tag, for example, a unidirectional communication mode can be configured between the electronic tag a and the electronic tag B on the right side of the electronic tag a in fig. 2, and a bidirectional communication mode can be configured between the electronic tag a and the electronic tag H on the lower side of the electronic tag a.

In addition, for each technical details in each embodiment of the above-mentioned position relationship verification method, reference may be made to the related description in the foregoing electronic label system, which is not repeated herein, but this should not cause a loss of protection scope of the present application.

Accordingly, the embodiments of the present application further provide a computer readable storage medium storing a computer program, where the computer program when executed can implement the steps that may be executed by the electronic tag in the above method embodiments.

Fig. 9 is a flowchart of another method for verifying a positional relationship according to another embodiment of the present application. As shown in fig. 9, the method is applicable to an electronic tag, and the method includes:

200. monitoring a set trigger event;

201. when a trigger event occurs, the self identification information is sent to the target electronic shelf label in the sight distance range based on the sight distance communication, so that the target electronic shelf label sends the self identification information and the received identification information to the server as relative position data, and the server performs electronic shelf label placement position relation verification according to the relative position data.

In this embodiment, the electronic shelf label is disposed in the article shelf, and may form an electronic shelf label system with other electronic shelf labels and the server in the article shelf, where the electronic shelf label may perform line-of-sight transmission with other electronic shelf labels, and may also communicate with the server. The electronic shelf label can correspond to one display position on the article shelf, and the deployment position of the electronic shelf label on the article shelf can be flexibly adjusted. In some practical applications, the administrator can pre-design the display drawings by using the auxiliary means of the display management software, so that the deployment structure of each electronic shelf label on the goods shelf is represented by the display drawings, and staff can deploy the electronic shelf labels according to the display drawings.

In order to realize the sight distance transmission, a sight distance communication device can be arranged in the electronic shelf label, and the electronic shelf label can carry out sight distance communication with the electronic shelf label in the sight distance range by utilizing the sight distance communication device. In this embodiment, the electronic shelf may send its own identification information to the target electronic shelf label within the viewing distance range based on the viewing distance communication, so that the target electronic shelf label sends its own identification information and the received identification information as relative position data to the server, so that the server performs verification of the placement position relationship of the electronic shelf label according to the relative position data.

In the process of transmitting the identification information with the target electronic frame tag within the viewing range, the electronic frame tag can be used as a sender and adopts a unidirectional communication mode, and the specific process can refer to the related description about the unidirectional communication mode in the foregoing embodiment, which is not repeated here.

Fig. 10 is a flowchart of another method for verifying a positional relationship according to another embodiment of the present application. The method, as shown in fig. 10, suitable for a server in an electronic label holding system, includes:

300. receiving relative position data sent by a plurality of electronic shelf labels, wherein the relative position data comprises identification information of the electronic shelf labels and identification information of the electronic shelf labels in the sight distance range of the electronic shelf labels;

301. and determining the actual placement position relationship among the plurality of electronic shelf labels according to the relative position data, and checking the actual placement position relationship among the plurality of electronic shelf labels.

In this embodiment, the plurality of electronic tags may communicate with the server, where a wireless or wired network connection may be between the electronic tags and the server. For example, the electronic tag and the server may implement transmission of relative position data through a wireless Access Point (AP). Of course, other network connection modes can be adopted between the electronic shelf label and the server to realize the transmission of the relative position data, such as a mobile network and the like. The network system of the mobile network may be any one of 2G (GSM), 2.5G (GPRS), 3G (WCDMA, TD-SCDMA, CDMA2000, UTMS), 4G (LTE), 4g+ (lte+), wiMax, 5G,Bluetooth low energy, etc.

The electronic shelf labels are arranged in the article shelves, each electronic shelf label can correspond to one display position on the article shelf, and the arrangement structure of the electronic shelf labels on the article shelf can be flexibly adjusted. In some practical applications, the administrator can pre-design the display drawings by using the auxiliary means of the display management software, so that the deployment structure of each electronic shelf label on the goods shelf is represented by the display drawings, and staff can deploy the electronic shelf labels according to the display drawings.

The electronic shelf labels can transmit identification information in the respective viewing distance range, so that for some of the electronic shelf labels, the identification information of other electronic shelf labels in the viewing distance range can be obtained, and the electronic shelf labels can transmit the identification information and the received identification information to the server as relative position data. The process of transferring the identification information between the electronic tags may refer to the related description in the foregoing embodiment, and will not be described herein.

In this embodiment, when the electronic shelf label sends the relative position data to the server, the relative position data can be encrypted and signed, and the server can directly analyze, process, store, respond and the like the relative position data, so that it is ensured that all intermediate forwarding devices between the electronic shelf label and the server cannot be eavesdropped, forged and tampered, the security is high, the concurrency performance is good, and a data security foundation is laid for verifying the position relationship of the server.

Accordingly, the server can receive a large amount of relative position data, and the relative position between every two electronic shelf labels can be determined according to the relative position data, so that the actual placement position relationship among a plurality of electronic shelf labels can be determined, and the actual placement position relationship among the plurality of electronic shelf labels is checked. In some practical applications, the server may compare the placement positions of the plurality of electronic shelf labels included in the display drawing with the determined actual placement position relationship, and locate the difference point from the placement positions, so as to screen out electronic shelf labels placed in a way that the placement positions do not conform to the display drawing.

In addition, the server may obtain the item information of at least one item associated with each electronic shelf label 10, and may generate an actual display relationship of each item in the item shelf based on the determined actual placement position relationship between the plurality of electronic shelf labels and the item information of at least one item associated with each electronic shelf label, and verify the actual display relationship of each item in the item shelf. In some practical applications, the display drawing may further include a placement relationship between the articles on the article shelf, and the server may compare the placement relationship between the articles on the article shelf included in the display drawing with the determined practical display relationship of the articles, and locate a difference point from the placement relationship, so as to screen out the articles placed in a manner not conforming to the display drawing.

Accordingly, in some practical applications, the electronic label system may further include a handheld terminal, where the handheld terminal is configured to collect article information of any article in the article shelf, including coding information, belonging category, and so on; the handheld terminal can also be used for collecting the identification information of the electronic shelf label 10 corresponding to the display position of each article, and sending the article information and the identification information of the electronic shelf label to the server in a correlated manner. The server can acquire the article information of at least one article associated with each electronic shelf label according to the article information, so that when the position relation of the article shelf is verified, the actual display relation of each article can be accurately determined according to the actual placement position relation among the plurality of electronic shelf labels.

In this embodiment, the identification information may be transferred between a plurality of electronic labels disposed on the goods shelf based on line-of-sight communication, and this process will generate a large amount of relative position data. The relative position data are sent to a server, and the server can determine the actual placement position relationship among the plurality of electronic shelf labels according to the relative position data, and can judge whether the actual placement position relationship among the electronic shelf labels accords with the display drawing or not based on the actual placement position relationship. Therefore, in the embodiment of the application, mutual positioning between the electronic shelf labels can be realized based on line-of-sight communication, so that the actual placement position relationship between the electronic shelf labels can be accurately determined, further, intelligent check and inspection on the placement condition of the article shelf can be realized, and the check efficiency and accuracy can be effectively improved.

Accordingly, the present application further provides a computer readable storage medium storing a computer program, where the computer program is executed to implement the steps executable by the server in the above method embodiments.

It should be noted that, in some of the above-described related method embodiments and the flows described in the drawings, a plurality of operations appearing in a specific order are included, but it should be clearly understood that the operations may be performed out of the order in which they appear herein or performed in parallel, the sequence numbers of the operations, such as 100, 101, etc., are merely used to distinguish between the various operations, and the sequence numbers themselves do not represent any execution sequence. In addition, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first" and "second" herein are used to distinguish different messages, devices, modules, etc., and do not represent a sequence, and are not limited to the "first" and the "second" being different types.

Fig. 11 is a schematic structural diagram of an electronic tag according to another embodiment of the present application. As shown in fig. 11, the electronic shelf label includes a memory 20, a processor 22, and a line-of-sight communication means 21; the line-of-sight communication means 21 comprises a line-of-sight receiving unit and/or a line-of-sight transmitting unit.

The memory 20 is used for storing a computer program, and can be configured to store other various data to support operations on the electronic shelf label. Examples of such data include instructions, messages, pictures, videos, etc. for any application or method operating on an electronic shelf sign. The memory may be implemented by any type of volatile or nonvolatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

A processor 22 coupled with the memory 20 and the line-of-sight communication means 21 for executing a computer program in the memory for:

receiving identification information sent by a first target electronic shelf sign in a sight distance range by utilizing a sight distance receiving unit; the identification information of the electronic shelf label and the identification information of the first target electronic shelf label are used as relative position data to be sent to a server, so that the server can check the placement position relationship of the electronic shelf label according to the relative position data; and/or the number of the groups of groups,

When a trigger event occurs, the vision distance transmitting unit is utilized to transmit the identification information of the second electronic shelf label to a second target electronic shelf label in the vision distance range, so that the second electronic shelf label can transmit the identification information of the second electronic shelf label and the received identification information to the server as relative position data, and the server can check the placement position relationship of the electronic shelf label according to the relative position data.

In an alternative embodiment, the processor 22 is configured to, when transmitting the identification information of the processor to the second target electronic tag within the viewing distance using the viewing distance transmitting unit:

if the electronic frame label is in the unidirectional communication mode, cyclically outputting the identification information of the electronic frame label in an output time slot, wherein the output time slot is larger than the dormant time slot of the second target electronic frame label when the starting point of the output time slot is the occurrence of a trigger event; or alternatively

If the electronic frame label is in the bidirectional communication mode, circularly outputting an information interaction request in an output time slot, wherein the output time slot is larger than a dormant time slot of the second target electronic frame label when a trigger event occurs at the starting point of the output time slot; and exchanging identification information with the second target electronic shelf label when receiving the consent indication sent by the second target electronic shelf label.

Splitting the identification information of the self into N data segments, wherein N is a positive integer;

determining the serial numbers corresponding to the N data segments according to the arrangement sequence of the N data segments;

respectively carrying out data coding according to the N data segments and the serial numbers corresponding to the N data segments so as to obtain N data packets;

and transmitting the N data packets to a second target electronic shelf label.

In an alternative embodiment, processor 22 is specifically configured to:

if the data packet is in the unidirectional communication mode, cyclically outputting N data packets in an output time slot according to the sequence of the serial numbers of the N data packets; or alternatively

If the communication mode is in the bidirectional communication mode, circularly outputting the first data packet in the N data packets in the output time slot; and exchanging the subsequent N-2 data packets with the second target electronic label when the first data packet of the second target electronic label is received.

In an alternative embodiment, processor 22, when receiving the identification information sent by the first target electronic tag within the line of sight with the line of sight receiving unit, is configured to:

if the first target electronic shelf is in the unidirectional communication mode, starting a sight distance receiving function in a interception time slot to receive identification information sent by a first target electronic shelf label; or alternatively

If the electronic frame label is in the bidirectional communication mode, starting a sight distance receiving function in a interception time slot to receive an information interaction request sent by a first target electronic frame label; and sending an agreement indication to the first target electronic tag to exchange identification information with the first target electronic tag.

In an alternative embodiment, the processor 22, upon sending an consent indication to the first target electronic mount, is configured to:

and sending the first data packet in the N data packets to a first target electronic label as an agreement indication.

In an alternative embodiment, at least one pair of vision transceiver units are disposed on opposite sides between the electronic shelf sign and the electronic shelf sign within the vision range.

Fig. 12 is a schematic structural diagram of a server according to another embodiment of the present application. As shown in fig. 12, the server includes a memory 30, a processor 31, and a communication component 32.

Memory 30 is used to store computer programs and may be configured to store various other data to support operations on the server. Examples of such data include instructions, messages, pictures, videos, etc. for any application or method operating on a server. The memory may be implemented by any type of volatile or nonvolatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

A processor 31 coupled with the memory 30 and the communication component 32 for executing the computer program in the memory for:

receiving, by the communication component 32, relative position data sent by the plurality of electronic tags, the relative position data including identification information of the electronic tags themselves and identification information of the electronic tags within a viewing range thereof;

In an alternative embodiment, processor 31 is further configured to:

acquiring article information of at least one article respectively associated with a plurality of electronic shelf labels;

generating an actual display relationship of each article in the article shelf according to the actual placement position relationship among the plurality of electronic shelf labels and the article information of at least one article respectively associated with each electronic shelf label;

and checking the actual display relationship of each article in the article shelf according to the preset article display relationship.

Further, as shown in fig. 12, the server further includes: power supply assembly 33, and the like. Only some of the components are schematically shown in fig. 12, which does not mean that the server only comprises the components shown in fig. 12.

Wherein the communication component 32 is configured to facilitate wired or wireless communication between the device in which the communication component is located and other devices. The device in which the communication component is located may access a wireless network based on a communication standard, such as WiFi,3G or 3G, or a combination thereof. In one exemplary embodiment, the communication component receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component may be implemented based on Near Field Communication (NFC) technology, radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, or other technologies to facilitate short range communications.

Wherein the power supply assembly 33 provides power to various components of the device in which the power supply assembly is located. The power components may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the devices in which the power components are located.

It should be noted that, for the technical details in the related embodiments of the position relation checking method, the electronic tag and the server, reference may be made to the related descriptions in the electronic tag system.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. An electronic shelf sign system, comprising: a server and a plurality of electronic shelf labels deployed in the item shelves;

each electronic shelf sign in the at least one electronic shelf sign is used for receiving the identification information sent by the first target electronic shelf sign in the sight distance range based on the sight distance communication; the identification information of the first target electronic shelf label and the identification information of the first target electronic shelf label are used as relative position data to be sent to the server; and/or when the trigger event occurs, transmitting the identification information of the second target electronic shelf label to a second target electronic shelf label in the sight distance based on the sight distance communication so that the second target electronic shelf label can transmit the identification information of the second target electronic shelf label and the received identification information to the server as relative position data;

the server is used for determining the actual placement position relationship among the plurality of electronic shelf labels according to the received relative position data and checking the actual placement position relationship among the plurality of electronic shelf labels;

Wherein the plurality of electronic shelf labels are arranged on the article shelf in rows and/or columns, and the installation position of each electronic shelf label corresponds to one display position of the article shelf; at least one pair of video receiving and transmitting units are arranged on opposite sides of two adjacent electronic shelf labels.

2. The system of claim 1, wherein the server is further configured to:

acquiring article information of at least one article associated with each of the plurality of electronic shelf labels;

and checking the actual display relationship of each item in the item shelf according to the preset item display relationship.

3. The system according to claim 1, wherein each electronic tag of the at least one electronic tag is configured to, when transmitting its identification information to the second target electronic tag within the viewing distance range:

if the electronic frame label is in a one-way communication mode, circularly outputting self identification information in an output time slot, wherein the starting point of the output time slot is that the output time slot is larger than the dormant time slot of the second target electronic frame label when the trigger event occurs; or alternatively

If the electronic frame label is in a bidirectional communication mode, circularly outputting an information interaction request in an output time slot, wherein the output time slot is larger than a dormant time slot of the second target electronic frame label when the trigger event occurs at the starting point of the output time slot; and exchanging identification information with the second target electronic shelf label when receiving the consent indication sent by the second target electronic shelf label.

4. A system according to claim 3, wherein each of the at least one electronic shelf label, when transmitting its identification information to the second target electronic shelf label within the viewing distance, is configured to:

and sending the N data packets to the second target electronic shelf label.

5. The system of claim 4, wherein each of the at least one electronic mount is specifically configured to:

if the data packets are in the unidirectional communication mode, circularly outputting the N data packets in an output time slot according to the sequence of the serial numbers of the N data packets; or alternatively

If the data packet is in the bidirectional communication mode, circularly outputting the first data packet in the N data packets in an output time slot; and exchanging the subsequent N-1 data packets with the second target electronic label when the first data packet of the second target electronic label is received.

6. The system according to any one of claims 1 to 5, wherein each of the at least one electronic tag is configured to, when receiving the identification information sent by the first target electronic tag within the viewing distance:

if the first target electronic shelf is in the unidirectional communication mode, starting a sight distance receiving function in a interception time slot to receive the identification information sent by the first target electronic shelf; or alternatively

If the electronic frame label is in the bidirectional communication mode, starting a sight distance receiving function in a interception time slot to receive an information interaction request sent by the first target electronic frame label; and sending an agreement indication to the first target electronic tag to exchange identification information with the first target electronic tag.

7. The position relation checking method is suitable for the electronic shelf label and is characterized by comprising the following steps:

The identification information of the server and the identification information of the first target electronic shelf label are used as relative position data to be sent to the server, so that the server can check the placement position relationship of the electronic shelf label according to the received relative position data;

monitoring a preset trigger event;

when the triggering event is monitored, the self identification information is sent to a second target electronic shelf label in the sight distance range based on the sight distance communication, so that the second target electronic shelf label can send the self identification information and the received identification information to the server as the relative position data;

wherein a plurality of electronic shelf labels are arranged on an article shelf in rows and/or columns, and the installation position of each electronic shelf label corresponds to one display position of the article shelf; at least one pair of video receiving and transmitting units are arranged on opposite sides of two adjacent electronic shelf labels.

8. The method of claim 7, wherein the receiving, based on the line-of-sight communication, the identification information sent by the first target electronic in the line-of-sight range comprises:

If the electronic frame label is in the bidirectional communication mode, starting a sight distance receiving function in a interception time slot to receive an information interaction request sent by the first target electronic frame label; sending an agreement indication to the first target electronic shelf sign so as to establish an identification information exchange channel between the first target electronic shelf sign and the first target electronic shelf sign; and exchanging identification information with the first target electronic shelf label by utilizing the identification information exchange channel so as to obtain the identification information of the first target electronic shelf label.

9. The method of claim 8, wherein said sending an approval indication to the first target electronic shelf comprises:

splitting the identification information of the self into N data segments;

and carrying the first data packet in the N data packets in the consent indication and sending the consent indication to the first target electronic shelf label.

10. The method of claim 9, wherein the information interaction request sent by the first target electronic tag includes a first data packet of the first target electronic tag, and the exchanging identification information with the first target electronic tag using the identification information exchange channel includes:

And exchanging the subsequent N-1 data packets with the first target electronic frame label by utilizing the identification information exchange channel.

11. The method of claim 7, wherein the transmitting the identification information of the second target electronic mount tag to the second target electronic mount tag in the range of view based on the range of view communication comprises:

12. The position relation checking method is suitable for the electronic shelf label and is characterized by comprising the following steps:

monitoring a set trigger event;

when a trigger event occurs, the self identification information is sent to a target electronic shelf label in the sight distance range based on sight distance communication, so that the target electronic shelf label sends the self identification information and the received identification information to a server as relative position data, and the server performs electronic shelf label placement position relation verification according to the received relative position data;

the identification information of the first target electronic shelf label and the identification information of the first target electronic shelf label are used as relative position data to be sent to the server;

13. The method of claim 12, wherein the transmitting the identification information of the electronic tag to the target electronic tag within the viewing distance comprises:

and circularly outputting the identification information of the self in an output time slot, wherein the output time slot is larger than the dormant time slot of the target electronic label when the trigger event occurs at the starting point of the output time slot.

14. The method of claim 13, wherein the transmitting the identification information of the electronic tag to the target electronic tag within the viewing distance comprises:

and sending the N data packets to the target electronic shelf label.

15. The method of claim 14, wherein the sending the identification information of the electronic tag to the target electronic tag within the viewing distance comprises:

and circularly outputting the N data packets in the output time slot according to the sequence of the sequence numbers of the N data packets.

16. The position relation checking method is suitable for a server and is characterized by comprising the following steps:

determining the actual placement position relationship among the plurality of electronic shelf labels according to the relative position data, and checking the actual placement position relationship among the plurality of electronic shelf labels;

each electronic shelf sign in the at least one electronic shelf sign is used for receiving the identification information sent by the first target electronic shelf sign in the sight distance range based on the sight distance communication; the identification information of the first target electronic shelf label and the identification information of the first target electronic shelf label are used as relative position data to be sent to the server; and/or when the trigger event occurs, the self identification information is sent to a second target electronic shelf label in the sight distance range based on the sight distance communication, so that the second target electronic shelf label can send the self identification information and the received identification information to the server as relative position data.

17. The method of claim 16, wherein the server is further configured to:

18. An electronic shelf label is characterized by comprising a memory, a processor and a vision distance communication device; the sight distance communication device comprises a sight distance receiving unit and/or a sight distance transmitting unit;

the memory is used for storing one or more computer instructions;

When a triggering event occurs, the sight distance sending unit is utilized to send the identification information of the second target electronic shelf label to a second target electronic shelf label in a sight distance range, so that the second target electronic shelf label can send the identification information of the second target electronic shelf label and the received identification information to the server as relative position data, and the server can check the placement position relationship of the electronic shelf label according to the relative position data;

19. The electronic shelf label as defined in claim 18, wherein the processor, when transmitting its identification information to the second target electronic shelf label within the viewing distance range using the viewing distance transmitting unit, is configured to:

20. The electronic shelf label as defined in claim 19, wherein the processor, when transmitting its identification information to the second target electronic shelf label within the viewing distance range using the viewing distance transmitting unit, is configured to:

and sending the N data packets to the second target electronic shelf label.

21. The electronic shelf label as defined in claim 20, wherein the processor is specifically configured to:

22. The electronic shelf label as defined in any one of claims 18-21, wherein the processor, when receiving the identification information sent by the first target electronic shelf label in the line of sight with the line of sight receiving unit, is configured to:

23. The electronic shelf sign of claim 22, wherein at least one pair of vision transceiver units is disposed on opposite sides between said electronic shelf sign and electronic shelf sign within its vision range.

24. A server comprising a memory, a processor, and a communication component;

the memory is used for storing one or more computer instructions;

25. The server of claim 24, wherein the processor is further configured to:

26. A computer-readable storage medium storing computer instructions that, when executed by one or more processors, cause the one or more processors to perform the positional relationship checking method of any of claims 7-11.

27. A computer-readable storage medium storing computer instructions that, when executed by one or more processors, cause the one or more processors to perform the positional relationship checking method of any of claims 12-15.

28. A computer-readable storage medium storing computer instructions that, when executed by one or more processors, cause the one or more processors to perform the positional relationship checking method of any of claims 16-17.