Electronic price tag synchronization system and method based on NFC

Abstract

The invention relates to an electronic price tag synchronization system and method based on NFC, and belongs to the technical field of electronic price tag synchroniss.The system comprises the steps that a price tag identifier of an electronic price tag terminal is obtained through an NFC device terminal, and initial price tag data in a cloud end are obtained according to the price tag identifier. The electronic price tag terminal does not need to keep wireless connection all the time, and an external interface is not needed, so that the energy consumption and cost of the electronic price tag are reduced; further, modifying the initial price tag data at the NFC equipment terminal to obtain modified price tag data, and sending the modified price tag data to the electronic price tag terminal; according to the method, the initial price tag data is modified through the NFC equipment terminal, the modified price tag data is displayed through the electronic price tag terminal after the initial price tag data is modified through the NFC equipment terminal, data of other electronic price tag terminals cannot be affected, and dependency between equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic price tag synchronization, and in particular to an NFC-based electronic price tag synchronization system and method. Background Art

[0002] At present, the screen synchronization solutions for electronic price tags mainly include the following: 1. Wireless synchronization: The transmission and synchronization of screen data is realized through Wi-Fi or other wireless communication technologies, which can realize remote updating of screen content, and is suitable for scenarios where information needs to be updated frequently. And the price tag itself needs to support wireless. 2. Wired synchronization: Data is transmitted to the electronic price tag screen through wired connections, such as USB or network cables, to ensure stable data transmission speed and accuracy, which is suitable for scenarios with high requirements for data security. 3. Cloud synchronization: The price tag data is stored on the cloud server, and data synchronization is realized through the Internet. The unified management and synchronous update of price tag data in multiple locations can be realized, which is convenient for real-time monitoring and management. 4. Bluetooth synchronization: Data transmission between electronic price tags and devices is realized through Bluetooth technology. It has the characteristics of low power consumption and short-distance transmission. It is suitable for scenarios that require fast and easy data synchronization.

[0003] Although the existing electronic price tag synchronization solutions can meet the needs of different scenarios, they all have certain defects. For example, relying on the electronic price tag itself to support wireless transmission of power-consuming parts will increase the energy consumption and cost of the electronic price tag; or it is necessary to add an external interface to the electronic price tag itself, which increases the complexity of design and manufacturing; or relying on other devices such as bases to complete data synchronization, which increases the dependence and cost between devices. These defects affect the stability and performance of the electronic price tag, and also increase the difficulty and cost of maintenance.

[0004] Therefore, it is urgent to propose an NFC-based electronic price tag synchronization system and method to solve the technical problems existing in the prior art of synchronizing electronic price tags through wireless transmission, wired transmission and cloud transmission, which leads to increased energy consumption, cost and dependence between devices of electronic price tags. Summary of the invention

[0005] In view of this, it is necessary to provide an NFC-based electronic price tag synchronization system and method to solve the technical problems existing in the prior art of synchronizing electronic price tags through wireless transmission, wired transmission and cloud transmission, which leads to increased energy consumption, cost and dependence between devices of electronic price tags.

[0006] In order to solve the above problems, the present invention provides an NFC-based electronic price tag synchronization system, which is connected to the cloud for communication, and the system includes: The NFC device terminal is used to obtain the price tag identifier of the electronic price tag terminal, obtain the initial price tag data in the cloud according to the price tag identifier, and when receiving an operation instruction, modify the initial price tag data to obtain modified price tag data, and send the modified price tag data to the electronic price tag terminal; The electronic price label terminal is used to display the modified price label data.

[0007] In a possible implementation, the NFC device terminal is further configured to send the modified price tag data to the cloud, so that the cloud updates the initial price tag data according to the modified price tag data.

[0008] In a possible implementation, the NFC device terminal is also used to obtain the template data in the cloud according to the price tag identification, send the template data to the electronic price tag terminal for data writing, and after receiving the initial price tag data sent by the electronic price tag terminal, send the initial price tag data and the price tag identification to the cloud.

[0009] In a possible implementation, the NFC device terminal is further used to convert the template data into image binary data through a native SDK and send the data to the electronic price label terminal for data writing.

[0010] In one possible implementation, the electronic price tag terminal includes a base SDK and an NFC device terminal, which is used to obtain corresponding template data from the cloud according to the price tag identification corresponding to each electronic price tag terminal when there are multiple electronic price tag terminals, and send multiple template data one by one to the base SDK of the corresponding electronic price tag terminal for batch data writing.

[0011] In one possible implementation, the NFC device terminal is connected to the base SDK of each electronic price tag terminal. The NFC device terminal is also used to read the heartbeat data of each base SDK, obtain the card slot status corresponding to each base SDK according to the heartbeat data, and determine that the card slot status is the target base with an electronic price tag, and obtain the initial price tag data corresponding to all target base SDKs.

[0012] In one possible implementation, the NFC device terminal is also used to determine the target price tag data whose electronic price tag status has changed based on each initial price tag data and the corresponding template data, and send all the target price tag data to the corresponding electronic price tag terminal and the cloud one by one, so that the corresponding electronic price tag terminal displays the target price tag data, and the cloud modifies the corresponding template data according to the target price tag data.

[0013] In a possible implementation, the electronic price tag terminal is further used to determine that the electronic price tag state of the initial price tag data has changed when the card slot state of the base SDK changes from the absence of an electronic price tag to the presence of an electronic price tag.

[0014] In a possible implementation, the electronic price label terminal is further configured to determine that the electronic price label state of the initial price label data is changed when the data of the electronic price label on the base SDK is modified.

[0015] On the other hand, the present invention also provides an NFC-based electronic price tag synchronization method, comprising: Get the price tag identifier of the electronic price tag terminal; Acquire initial price tag data in the cloud according to the price tag identifier; When receiving the operation instruction, modifying the initial price tag data to obtain modified price tag data; The modified price tag data is sent to the electronic price tag terminal for display.

[0016] The beneficial effects of the present invention are as follows: the price tag identifier of the electronic price tag terminal is obtained through the NFC device terminal, and then the initial price tag data in the cloud is obtained according to the price tag identifier. The NFC device terminal in the present invention obtains the data of the electronic price tag terminal through NFC, and the electronic price tag terminal does not need to maintain a wireless connection at all times, and does not need an external interface, thereby reducing the energy consumption and cost of the electronic price tag; further, when the NFC device terminal receives an operation instruction, the initial price tag data can be modified to obtain modified price tag data, and then the modified price tag data can be sent to the electronic price tag terminal; the electronic price tag terminal can display the modified price tag data. After the present invention modifies the initial price tag data through the NFC device terminal, the modified price tag data is displayed through the electronic price tag terminal, which will not affect the data of other electronic price tag terminals, thereby reducing the dependence between devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an embodiment of an NFC-based electronic price tag synchronization system provided by the present invention; Figure 2 A schematic diagram of a complete embodiment of the electronic price tag synchronization system provided by the present invention; Figure 3 A schematic flow chart of an embodiment of the NFC-based electronic price tag synchronization method provided by the present invention. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0019] like Figure 1 As shown, a specific embodiment of the present invention discloses an NFC-based electronic price tag synchronization system, which is communicatively connected to a cloud 103, and the system 100 includes: The NFC device terminal 102 is used to obtain the price tag identifier of the electronic price tag terminal 101, obtain the initial price tag data in the cloud 103 according to the price tag identifier, and when receiving an operation instruction, modify the initial price tag data to obtain modified price tag data, and send the modified price tag data to the electronic price tag terminal 101; The electronic price label terminal 101 is used to display the modified price label data.

[0020] It should be understood that electronic price tags can be written through mobile phones without relying on other devices or power-consuming electronic components. Through the mobile phone app, users can easily read the data in the electronic price tag, modify it and then rewrite it. This solution not only reduces the dependence on additional equipment, but also reduces energy consumption and costs. Through the connection between the mobile phone and the electronic price tag, more convenient data synchronization and management are achieved, and operational efficiency and user experience are improved. It also promotes the intelligent development of electronic price tags, meets users' needs for flexible operation and simplified technology, and can be widely used in retail scenarios to enhance the application value and competitiveness of electronic price tags.

[0021] In a specific embodiment of the present invention, the NFC device terminal 102 can be used to obtain data from the electronic price tag terminal 101. The NFC device terminal 102 is set up with a small program, such as flutter, and the electronic price tag is integrated into the printing app through the flutter small program. The printing app is a functional app that integrates the comprehensive printing function of multiple small programs. Here, the electronic price tag function is integrated into the printing app through the small program. The content of the electronic price tag needs to be edited through it, and the connection and interaction with the electronic price tag need to be carried out through it. The electronic price tag terminal 101 is contacted through the mobile phone NFC (i.e., the NFC device terminal 102), and the price tag identification of the electronic price tag terminal 101 is obtained through NFC. Specifically: when using a mobile phone or device with NFC identification function (i.e., the NFC device terminal 102), the native code layer of the small program will first obtain NFC-related function permissions, and then when switching to the NFC identification page of the electronic price tag small program, the native code will monitor the data of the NFC identification module, and when the identified broadcast data is received, the price tag identification of the electronic price tag terminal 101 is obtained through the data. After obtaining the price tag identifier, the price tag identifier will be sent to the server through the interface, and the price tag identifier will be used as a unique identifier to query in the database of the cloud 103 to obtain the initial price tag data of the last successful synchronization. If there is no initial price tag data synchronized last time, the server will return a default electronic price tag data for rendering. When the user uses NFC echo, the user can also modify the initial price tag data through a drawing board on the printing app of the NFC device terminal 102, so that an operation instruction can be generated according to the modification. When the NFC device terminal 102 receives the user's operation instruction, the NFC device terminal 102 can modify the initial price tag data, and obtain the modified price tag data. Then, the modified price tag data can be sent to the electronic price tag terminal 101, and the electronic price tag terminal 101 can display the modified price tag data.

[0022] Compared with the prior art, the present embodiment provides a method of obtaining the price tag identification of the electronic price tag terminal 101 through the NFC device terminal 102, and then obtaining the initial price tag data in the cloud 103 according to the price tag identification. The NFC device terminal 102 in the present invention obtains the data of the electronic price tag terminal 101 through NFC, and the electronic price tag terminal 101 does not need to maintain a wireless connection at all times, and does not need an external interface, thereby reducing the energy consumption and cost of the electronic price tag; further, the initial price tag data can be modified on the NFC device terminal 102 to obtain modified price tag data, and then the modified price tag data is sent to the electronic price tag terminal 101; the electronic price tag terminal 101 can display the modified price tag data. After the present invention modifies the initial price tag data through the NFC device terminal 102, the modified price tag data is displayed through the electronic price tag terminal 101, which will not affect the data of other electronic price tag terminals 101, thereby reducing the dependence between devices.

[0023] In some embodiments of the present invention, the NFC device terminal 102 is further configured to send the modified price tag data to the cloud 103, so that the cloud 103 updates the initial price tag data according to the modified price tag data.

[0024] In a specific embodiment of the present invention, the NFC device terminal 102 is also used to send the modified price tag data to the cloud 103. The cloud 103 can update and store the initial price tag data according to the price tag identifier and the modified price tag data, so that the initial price tag data corresponding to the price tag identifier read subsequently is the latest data.

[0025] In some embodiments of the present invention, the NFC device terminal 102 is also used to obtain template data in the cloud 103 according to the price tag identification, send the template data to the electronic price tag terminal 101 for data writing, and send the initial price tag data and the price tag identification to the cloud 103 after receiving the initial price tag data sent by the electronic price tag terminal 101.

[0026] In a specific embodiment of the present invention, before the initial price tag data in the electronic price tag terminal 101 is modified through the NFC device terminal 102, the data of all the electronic price tag terminals 101 can be written first to generate the initial price tag data. Specifically: the electronic price tag terminal 101 is contacted through the mobile phone NFC (i.e., the NFC device terminal 102), and the price tag identification of the electronic price tag terminal 101 is obtained through NFC. Then, the template data in the cloud 103 can be obtained through the price tag identification. Among them, multiple template data are set in the cloud 103 according to actual conditions. The template data can be set according to actual conditions, and the embodiment of the present invention is not limited here. After obtaining the template data corresponding to the price tag identification, the NFC device terminal 102 can send the template data to the electronic price tag terminal 101 for data writing. After receiving the template data, the electronic price tag terminal 101 can write data into the template data to generate initial price tag data, and send the initial price tag data to the NFC device terminal 102 via NFC. After receiving the initial price tag data sent by the electronic price tag terminal 101, the initial price tag data and the price tag identification are sent to the cloud 103. The cloud 103 can store the initial price tag data corresponding to the price tag identification to facilitate subsequent reading of the initial price tag data corresponding to the price tag identification.

[0027] In some embodiments of the present invention, the NFC device terminal 102 is further used to convert the template data into image binary data through a native SDK and send it to the electronic price label terminal 101 for data writing.

[0028] In a specific embodiment of the present invention, after the NFC device terminal 102 obtains the template data through NFC, it can convert the template data into image binary data through the native SDK, and then send the image binary data to the electronic price tag terminal 101 through NFC for data writing, wherein the template data is rendered into a picture through a plug-in integrated in the electronic price tag SDK and displayed on the electronic price tag applet page.

[0029] Further, such as Figure 2As shown, the mobile phone NFC (i.e., NFC device terminal 102) is in contact with the electronic price tag terminal 101, and the price tag identifier of the electronic price tag terminal 101 is obtained by NFC, and sent to the cloud 103 according to the price tag identifier. The cloud 103 can return the corresponding template data to the NFC device terminal 102 according to the price tag identifier, and then send the template data to the electronic price tag terminal 101 by NFC. The electronic price tag terminal 101 can write data according to the template data to obtain the initial price tag data, and return the initial price tag data to the NFC device terminal 102. The NFC device terminal 102 can send the initial price tag data and the price tag identifier to the cloud 103. The cloud 103 can store the initial price tag data according to the price tag identifier. When the mobile phone NFC (i.e., NFC device terminal 102) contacts the electronic price tag terminal 101 again and obtains the price tag identifier of the electronic price tag terminal 101 through NFC, the cloud 103 can return the corresponding initial price tag data to the NFC device terminal 102 according to the price tag identifier. The user can modify the initial price tag data on the NFC device terminal 102 to obtain the modified price tag data, and then send the modified price tag data to the electronic price tag terminal 101 for display. The modified price tag data can also be sent to the cloud 103 to update the initial price tag data.

[0030] The embodiment of the present invention realizes the rapid transmission and management of data, and greatly improves the intelligent management level of electronic price tags. Users can integrate electronic price tags through the printing App, obtain the price tag identification of the electronic price tag terminal 101 through the mobile phone NFC and complete data writing, thereby realizing convenient data operation and updating. At the same time, by writing data through the applet and synchronizing it to the cloud 103 server, data backup and real-time update are realized, and the security and stability of the data are guaranteed. When using NFC echo, by obtaining the price tag identification of the electronic price tag terminal 101 and obtaining the last write record in the cloud 103, real-time modification and re-upload of data are realized, providing users with more convenience and operation options. This technical solution not only reduces the dependence on additional equipment, reduces energy consumption and costs, but also improves operating efficiency and user experience, and promotes the intelligent development of electronic price tag management. By integrating mobile phone NFC technology and cloud 103 management, efficient transmission and real-time synchronization of data are realized, meeting the user's needs for flexible operation and simplified technology.

[0031] In some embodiments of the present invention, the electronic price tag terminal 101 includes a base SDK, and the NFC device terminal 102 is used to obtain corresponding template data from the cloud 103 according to the price tag identification corresponding to each electronic price tag terminal 101 when there are multiple electronic price tag terminals 101, and send multiple template data one by one to the base SDK of the corresponding electronic price tag terminal 101 for batch data writing.

[0032] In a specific embodiment of the present invention, a mobile phone NFC (i.e., an NFC device terminal 102) can be connected to multiple electronic price tag terminals 101. The electronic price tag terminal 101 may include a base SDK. After obtaining the price tag identification corresponding to each electronic price tag terminal 101, it can be sent to the cloud 103 according to the price tag identification. The cloud 103 can return the corresponding template data to the NFC device terminal 102 according to the price tag identification, and then send all the template data one by one to the base SDK of the corresponding electronic price tag terminal 101 for batch data writing.

[0033] In some embodiments of the present invention, the NFC device terminal 102 is connected to all base SDKs, and the NFC device terminal 102 is also used to read the heartbeat data of all base SDKs, obtain the card slot status corresponding to each base SDK according to the heartbeat data, and determine that the card slot status is the target base with an electronic price tag, and obtain the initial price tag data corresponding to all target base SDKs.

[0034] In a specific embodiment of the present invention, the electronic price tag terminal 101 may include a base SDK. In the process of writing data in the electronic price tag terminal 101 according to the target data, multiple electronic price tag terminals 101 may be processed. Specifically: after the connection is successful, the NFC device terminal 102 can read the heartbeat data of all base SDKs, wherein the main function of the heartbeat data is to obtain the power status of the electronic price tag base and the status of each card slot, for example, it can be obtained whether there is an electronic price tag on the current card slot and other information. Each card slot on the base will have a corresponding sensor to obtain the electronic price tag data placed in the current card slot. When the mobile phone is connected to the base, the base will send the information of the card slot to the app at a fixed frequency, and the card slot status can be obtained from the heartbeat data. Then, the card slot status of the corresponding base SDK can be determined based on the heartbeat data. The card slot status may include the status of no electronic price tag and the status of the electronic price tag. Then, the card slot status of all base SDKs can be judged, and then the card slot status of all target bases with electronic price tags can be determined, and then the initial price tag data corresponding to all target bases can be obtained.

[0035] In some embodiments of the present invention, the NFC device terminal 102 is also used to determine the target price tag data whose electronic price tag status has changed based on each initial price tag data and the corresponding template data, and send all the target price tag data to the corresponding electronic price tag terminal 101 and the cloud 103 one by one, so that the corresponding electronic price tag terminal 101 displays the target price tag data, and the cloud 103 modifies the corresponding template data according to the target price tag data.

[0036] In a specific embodiment of the present invention, after the NFC device terminal 102 obtains the initial price tag data of all target bases, the corresponding template data can be obtained from the cloud 103 according to the price tag identifier of each initial price tag data, and then the state of the electronic price tag in the initial price tag data can be judged. The initial price tag data may include the size of the electronic price tag, whether the state of the electronic price tag is abnormal, and other information. Among them, when the card slot state of the base SDK changes from the absence of an electronic price tag to the presence of an electronic price tag, it means that the electronic price tag on the base SDK has been removed and then installed again, then it can be determined that the state of the electronic price tag of the acquired initial price tag data has changed. Or when the data of the electronic price tag on the base SDK is modified, it can also be determined that the state of the electronic price tag of the initial price tag data has changed. When the state of the electronic price tag on the card slot changes, the initial price tag data is determined to be the target price tag data, so that all the changed target price tag data can be obtained, and the electronic price tag state is updated in real time on the app through the heartbeat data, and then all the target price tag data are sent one by one to the corresponding electronic price tag terminal 101 and the cloud 103, so that the corresponding electronic price tag terminal 101 displays the target price tag data, so that the cloud 103 modifies the corresponding template data according to the target price tag data.

[0037] The electronic price tag terminal 101 of the embodiment of the present invention realizes the batch writing function of up to 6 electronic price tags, which greatly improves the efficiency and speed of data synchronization. By processing the data synchronization of multiple price tags at the same time, merchants can update product information more quickly and conveniently to ensure that the prices seen by customers are the latest. Secondly, the electronic price tag supports online recording of product data and provides a variety of templates for selection, realizing a high degree of customization of the price tag content. Merchants can edit product information online, flexibly set prices, promotions and other content, display personalized price tag information, and attract consumer attention. The electronic price tag supports real-time editing function, and merchants can modify the price tag content at any time, update product information in a timely manner, and improve the realization of timely changes in product prices. This helps to meet the needs of frequent changes in product prices in retail scenarios such as supermarkets and maintain the real-time nature of prices. The status of the electronic price tag can be monitored in real time through the mobile phone App, realizing real-time perception of the price tag status. Merchants can check the operating status and data update of the price tag at any time, adjust strategies in a timely manner, and optimize sales results. The electronic price tag has the function of high-resolution display of QR codes, barcodes and other contents, supports scanning, and improves the display effect of product information. Consumers can quickly and easily obtain more information about products, improving their shopping experience. Finally, the electronic price tag realizes multi-link operation, supports multiple people to write price tags, and improves operational efficiency. Multi-person collaboration can realize centralized management and rapid update of price tag data, making the workflow more flexible and smooth.

[0038] In order to better implement the NFC-based electronic price tag synchronization system in the embodiment of the present invention, based on the NFC-based electronic price tag synchronization system, the embodiment of the present invention also provides an NFC-based electronic price tag synchronization method, such as Figure 3 As shown, the electronic price tag synchronization method based on NFC includes: Get the price tag identifier of the electronic price tag terminal; Obtain the initial price tag data in the cloud according to the price tag identifier; When an operation instruction is received, the initial price tag data is modified to obtain modified price tag data; The modified price tag data is sent to the electronic price tag terminal for display.

[0039] The NFC-based electronic price tag synchronization method provided in the above embodiment can implement the technical solution described in the above NFC-based electronic price tag synchronization system embodiment. The specific implementation principles of the above steps can refer to the corresponding contents in the above NFC-based electronic price tag synchronization system embodiment, which will not be repeated here.

[0040] The NFC-based electronic price tag synchronization system and method provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An NFC-based electronic price tag synchronization system that communicates with the cloud. It is characterized in that The system comprises: The NFC device terminal is used to obtain the price tag identifier of the electronic price tag terminal, obtain the initial price tag data in the cloud according to the price tag identifier, and when receiving an operation instruction, modify the initial price tag data to obtain modified price tag data, and send the modified price tag data to the electronic price tag terminal; The electronic price label terminal is used to display the modified price label data.

2. The NFC-based electronic price tag synchronization system according to claim 1, It is characterized in that The NFC device terminal is further used to send the modified price tag data to the cloud, so that the cloud updates the initial price tag data according to the modified price tag data.

3. The NFC-based electronic price tag synchronization system according to claim 1, It is characterized in that The NFC device terminal is also used to obtain the template data in the cloud according to the price tag identifier, send the template data to the electronic price tag terminal for data writing, and send the initial price tag data and the price tag identifier to the cloud after receiving the initial price tag data sent by the electronic price tag terminal.

4. The NFC-based electronic price tag synchronization system according to claim 3, It is characterized in that The NFC device terminal is also used to convert the template data into image binary data through the native SDK and send it to the electronic price label terminal for data writing.

5. The NFC-based electronic price tag synchronization system according to claim 3, It is characterized in that The electronic price tag terminal includes a base SDK; the NFC device terminal is also used to obtain corresponding template data from the cloud according to the price tag identification corresponding to each electronic price tag terminal when there are multiple electronic price tag terminals, and send multiple template data one by one to the base SDK of the corresponding electronic price tag terminal for batch data writing.

6. The NFC-based electronic price tag synchronization system according to claim 5, It is characterized in that The NFC device terminal is connected to the base SDK of each electronic price tag terminal. The NFC device terminal is also used to read the heartbeat data of each base SDK, obtain the card slot status corresponding to each base SDK according to the heartbeat data, and determine that the card slot status is the target base with an electronic price tag, and obtain the initial price tag data corresponding to all target base SDKs.

7. The NFC-based electronic price tag synchronization system according to claim 6, It is characterized in that The NFC device terminal is also used to determine the target price tag data whose electronic price tag status has changed based on each initial price tag data and the corresponding template data, and send all the target price tag data to the corresponding electronic price tag terminal and the cloud one by one, so that the corresponding electronic price tag terminal displays the target price tag data, so that the cloud can modify the corresponding template data according to the target price tag data.

8. The NFC-based electronic price tag synchronization system according to claim 7, It is characterized in that The electronic price tag terminal is further used to determine that the electronic price tag state of the initial price tag data has changed when the card slot state of the base SDK changes from the absence of an electronic price tag to the presence of an electronic price tag.

9. The NFC-based electronic price tag synchronization system according to claim 8, It is characterized in that The electronic price label terminal is further used to determine that the electronic price label state of the initial price label data has changed when the data of the electronic price label on the base SDK is modified.

10. An electronic price tag synchronization method based on NFC, It is characterized in that include: Get the price tag identifier of the electronic price tag terminal; Acquire initial price tag data in the cloud according to the price tag identifier; When receiving the operation instruction, modifying the initial price tag data to obtain modified price tag data; The modified price tag data is sent to the electronic price tag terminal for display.

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