Anti-interference NFC label device and NFC processing method

Abstract

The invention discloses anti-interference NFC label equipment. The anti-interference NFC label equipment comprises a PVC panel layer, a chip function layer, an anti-metal interference panel layer and a soft magnet panel layer which are sequentially laminated from top to bottom, the PVC panel is provided with a two-dimensional code area and an NFC induction area. The anti-metal interference panel is used for resisting electromagnetic interference generated by surrounding metal equipment and structures; the soft magnet panel layer is made of soft magnets and used for being attracted to the surface of an iron object. According to the NFC processing method, on the basis of the current NFC technology, the problem of calling the app to execute the preset operation in different NFC scenes is optimized, so that non-contact point-to-point data transmission non-sensitive operation can still be performed in multiple scenes such as opening the app, running the app in the background and not running the app in the background, and page jumping or preset action execution is realized.

Description

Technical Field

[0001] This invention relates to the field of NFC processing technology, and in particular to an anti-interference NFC tag device and an NFC processing method. Background Technology

[0002] With the continuous development of NFC (Near Field Communication) technology, more and more mobile terminals such as smartphones and smartwatches are beginning to have NFC functionality, enabling different electronic devices to exchange data when they are close to each other. NFC has a variety of practical functions. In the payment field, it supports quick transactions by simply tapping the device together when shopping offline. In access control, whether at home or in the office, users can open doors by swiping their mobile devices after registering their information, improving security and convenience. In the transportation field, it can be used for public transportation, such as taking a bus or subway, by simply tapping the card against the card reader or subway gate, making travel more convenient. Furthermore, different scene modes can be set, allowing mobile terminals to automatically adjust settings as needed, greatly enriching people's lives.

[0003] However, NFC communication is based on the principle of electromagnetic induction, making it susceptible to interference from surrounding metal objects and electromagnetic environments. In crowded places like shopping malls and subway stations, where there are many electronic devices, the signals from surrounding metal structures and various electronic devices are likely to interfere with NFC communication, affecting its normal use. Moreover, in most cases, mobile phones can only act as information providers in NFC applications, and it is difficult for them to collect and process NFC information. Typically, users need to open a dedicated app before they can perform subsequent operations, which significantly impacts the user experience. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-interference NFC tag device and an NFC processing method, which can perform contactless point-to-point data transmission in multiple scenarios, such as when the app is open, running in the background, or not running in the background. This enables page navigation or the execution of preset actions and can be applied to solve scenarios such as group-buying coupon redemption, shared bicycle unlocking, meeting check-in, and tourist attendance statistics.

[0005] The technical solution adopted in this invention is as follows: An anti-interference NFC tag device includes a PVC panel layer, a chip functional layer, an anti-metal interference panel layer, and a soft magnet panel layer stacked sequentially from top to bottom. The PVC panel has a QR code area and an NFC sensing area. The chip functional layer includes a chip, a coil surrounding the chip, and a micro storage unit connected to the chip. The chip functional layer is glued between the PVC panel layer and the anti-metal interference panel layer. The anti-metal interference panel layer is used to resist electromagnetic interference generated by surrounding metal devices and structures. The soft magnet panel layer is made of soft magnets and is used to adhere to the surface of ferrous objects.

[0006] The QR code is a backup scanning device, printed on waterproof, oil-proof, alcohol-proof, scratch-proof, tear-resistant, and adhesive label printing paper, and pasted on the QR code area of ​​the PVC panel.

[0007] An NFC processing method based on an anti-interference NFC tag device includes the following steps: Step S1: First, write the data to the anti-interference NFC tag device via a computer. Step S2: The user installs a related app that can recognize the corresponding NFC commands on a smart mobile device; Step S3: Unlock the smart mobile device; Step S4: Bring the smart mobile device close to the sensing area of ​​the NFC tag; if the app is not running in the background, a cold start process is executed, launching the app to the foreground to receive and decode NFC data, and executing preset actions; if the app is already running in the background, a warm start process is executed, waking the app to the foreground to receive and decode NFC data, and executing preset actions; if the app's page is currently displayed, the content displayed on the current page can be dynamically updated directly, and preset actions can be executed. Step S5: Bringing the NFC tag close again will repeat the above process. The NFC tag device of this invention comprises, from top to bottom, a PVC panel layer, a chip functional layer, an anti-metal interference panel layer, and a soft magnet panel layer. The addition of the anti-metal panel and soft magnet effectively solves the problem of NFC signal interference in metallic environments at the hardware level. Even in environments rich in metal, such as the exterior of a car or near a metal cabinet, stable NFC signal transmission and reception are guaranteed, greatly expanding the application scenarios and reliability of NFC tags. The addition of the soft magnet enhances the adaptability and flexibility of the NFC tag device. On the one hand, it can assist in achieving a more stable magnetic connection in specific scenarios; on the other hand, in conjunction with the anti-metal panel, it can optimize signal reception and ensure good performance on various material surfaces. In terms of processing functionality, the combination of these two elements makes the anti-interference NFC tag device more stable and efficient in receiving and processing data, and can decode NFC information more accurately and quickly. Whether in applications such as payment, access control, bill verification, or data transmission, it can reduce errors and delays caused by metal interference, improve user experience, and ensure the accuracy and integrity of data transmission.

[0008] The NFC processing method of this invention can perform contactless point-to-point data transmission in multiple scenarios, such as when the app is open, running in the background, or not running in the background. It can realize page jump or execute preset action operations, and can be applied to multiple fields. It effectively simplifies the traditional cumbersome operation steps. You can start operating by unlocking the phone, and ordinary users can get started quickly. It can also be combined with physical devices to realize data synchronization and update, saving labor costs. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the NFC tag device structure of this invention; Figure 2 This is a flowchart illustrating the NFC processing method in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the working process of the NFC processing method in an embodiment of the present invention. Detailed Implementation

[0010] like Figure 1As shown, this invention discloses an anti-interference NFC tag device, comprising a PVC panel layer, a chip functional layer, an anti-metal interference panel layer, and a soft magnet panel layer stacked sequentially from top to bottom; the PVC panel, chip functional layer, anti-metal interference panel layer, and soft magnet panel layer are bonded together sequentially with adhesive; the PVC panel has a QR code area and an NFC sensing area; the chip functional layer includes a chip, a coil surrounding the chip, and a micro storage unit connected to the chip; the chip functional layer is glued between the PVC panel layer and the anti-metal interference panel layer; the anti-metal interference panel layer protects the NFC tag by "isolating metal eddy current interference" and "enhancing signal penetration," resisting electromagnetic interference generated by surrounding metal devices and structures, maintaining a stable communication connection, and ensuring that data can be accurately uploaded to the cloud or interact with other devices; the soft magnet panel layer is made of soft magnets and is used to adhere to the surface of ferrous objects, directly adhering to metal surfaces, making the device easier to install and remove without damaging the metal surface, and allowing for easy repositioning.

[0011] The QR code is a backup scanning terminal, printed on waterproof, oil-proof, alcohol-proof, scratch-resistant, tear-resistant, and adhesive label paper, and affixed to the QR code area of ​​the PVC panel. This material can maintain its integrity and clear scannability for a long time in complex environments such as moisture, oil stains, and frequent contact, combining durability, environmental adaptability, and ease of use, effectively avoiding the problems of easy damage and information loss of ordinary labels.

[0012] The PVC panels can be made into billboards of various shapes and sizes. By printing or spraying on the panels, advertising content can be displayed to attract people's attention.

[0013] The NFC chip can be read and written, enabling data exchange over short distances and is widely used in multiple fields; it uses a coil as a power source and a micro storage unit for information storage.

[0014] This invention's anti-interference NFC tag device incorporates an anti-metal panel and a soft magnet. At the hardware level, the anti-metal panel effectively solves the problem of NFC signal interference in metallic environments. Even in environments rich in metal, such as the exterior of a car or near a metal cabinet, it ensures stable NFC signal transmission and reception, greatly expanding the application scenarios and reliability of NFC tags. The addition of the soft magnet enhances the adaptability and flexibility of the NFC tag device. On one hand, it assists in achieving a more stable magnetic connection in specific scenarios; on the other hand, in conjunction with the anti-metal panel, it optimizes signal reception, ensuring good performance on various material surfaces. In terms of processing capabilities, the combination of these two elements makes the anti-interference NFC tag device more stable and efficient in receiving and processing data, enabling more accurate and faster decoding of NFC information. Whether in applications such as payment, access control, bill verification, or data transmission, it reduces errors and delays caused by metal interference, improves user experience, and ensures the accuracy and integrity of data transmission.

[0015] This invention provides an anti-interference NFC tag device that offers a hybrid NFC and QR code solution. Through complementary design, it perfectly balances efficiency, cost, and security requirements, enhancing the user experience. Users can automatically complete the process by simply placing their phone near the NFC tag, or scan the code themselves. The hybrid solution can be flexibly switched according to scenario requirements, avoiding the limitations of a single technology. The hybrid NFC and QR code solution, through its "complementarity" and "flexibility," addresses the shortcomings of single technologies, offering significant advantages in security, cost, and scenario adaptability. Currently, most mainstream NFC tag applications are limited to the single function of "triggering page navigation." However, we can further expand this to a closed-loop process of "tag sensing → page navigation → preset action execution." Through automated, scenario-based action chains, we solve the problems of traditional NFC's single function and fragmented interaction. This upgrade not only improves the smoothness of the user experience but also creates additional value for business operations, industrial management, and other scenarios through data collection and cross-functional integration, driving the evolution of NFC technology from an "auxiliary tool" to a "core process component."

[0016] The present invention provides an NFC processing method based on an anti-interference NFC tag device, comprising the following steps: Step S1: First, write the data to the anti-interference NFC tag device via a computer. Step S2: The user installs a related app that can recognize the corresponding NFC commands on a smart mobile device; Step S3: Unlock the smart mobile device; Step S4: Bring the smart mobile device close to the sensing area of ​​the NFC tag; if the app is not running in the background, a cold start process is executed, launching the app to the foreground to receive and decode NFC data, and executing preset actions (such as jumping to a specified app page); if the app is already running in the background, a warm start process is executed, waking the app to the foreground to receive and decode NFC data, and executing preset actions; if the current page displays the app page, the content displayed on the current page can be dynamically updated directly, and preset actions can be executed. Step S5: Bringing the NFC tag close again will repeat the above process.

[0017] The NFC processing method of this invention utilizes NFC tag devices, which boast characteristics such as "rapid short-range identification, strong anti-interference capabilities, and stable data storage," making them widely applicable in various fields. These include: conference check-in (quick registration by touching the tag), tour group boarding and alighting statistics (real-time recording of group member check-in status), corporate attendance (employees clocking in with their ID cards, automatically synchronizing attendance data), equipment inspection (inspectors can fill out inspection records by touching the device tag, replacing paper forms), venue entry (attendants use NFC-enabled tickets to quickly enter and count attendees), and product traceability (consumers can touch product tags to view production and distribution information). This effectively simplifies traditionally cumbersome operation steps; operation can be performed simply by unlocking a mobile phone, allowing ordinary users to quickly get started. Furthermore, it integrates with physical devices to achieve synchronized data updates, saving labor costs.

[0018] The technical solution, key innovations, and implementation effects of this invention will be systematically described below with reference to the accompanying drawings and specific embodiments. It should be noted that the implementation examples described below are merely illustrative of the technical implementation path of this solution; their specific parameters and configuration methods can be adjusted according to actual application scenarios and do not constitute a limitation on the scope of protection of this invention.

[0019] like Figure 2 The flowchart shown in this embodiment of the invention provides an NFC processing method, taking a meeting check-in system as an example, including the following steps: Step S1: Write the data to the anti-interference NFC tag device. Staff need to write the basic information of the meeting room (such as the meeting room number and location) and the key data of the meeting check-in page (such as the check-in link and check-in page redirection information) into the NFC tag device in advance. At the same time, through the system's preset trigger rules: when a user touches the NFC tag with a mobile phone that has downloaded the associated APP, the mobile phone will automatically read the meeting room information stored in the tag and directly jump to the meeting check-in page to automatically perform the check-in operation. This mechanism, with the stable data storage and reading capabilities of the anti-interference NFC tag, ensures that the information is accurately identified and transmitted without delay during the touch interaction, avoiding check-in failure or page redirection abnormalities caused by signal interference from the source, and improving the efficiency and stability of meeting check-in.

[0020] Step S2: The user installs a related app that can recognize the corresponding NFC commands on a smart mobile device.

[0021] Step S3: Unlock your phone. To ensure the security and reliability of page navigation, mobile phone systems typically employ a series of security mechanisms. If the phone is locked and the NFC function is used carelessly, accidental touches may trigger the NFC card emulation function, leading to unnecessary charges or other losses. Therefore, you need to unlock your phone before using the NFC function.

[0022] Step S4: Bring your phone close to the NFC receiving device that has written data. When a user brings a phone with NFC functionality and a linked app close to the interference-resistant NFC tag device that has written information, the phone's built-in NFC function will detect the signal and establish a communication connection with the NFC tag device. The phone system will automatically recognize the NFC signal and parse the data it contains.

[0023] Step S5: Open the app and execute a preset action or jump to a specified page. After receiving the data from the NFC tag, the mobile system will process it according to the data type and preset rules. The system will launch the installed associated app according to the instructions, pass relevant parameters, realize the meeting check-in page jump, and automatically execute the check-in operation. The system will map the NFC tag information with the page in the application in advance. When the mobile phone reads the tag, the system can directly and quickly locate the target page and execute the preset action through the local database or preset rules, avoiding jump failure due to network delay or data error. After the user approaches the tag, the launch of the navigation app and the page jump are completed almost simultaneously (usually within 0.5 seconds). The preset action is executed at the same time as the jump. Compared with scanning the code to jump (which requires opening the camera, focusing, and network loading) or manually searching the page, it saves the cumbersome steps of "opening the application → finding content → executing the preset action".

[0024] like Figure 3The NFC processing method of this embodiment of the invention is as follows: After unlocking the phone and bringing it close to the NFC receiving device, the phone receives NFC data and determines the current page display status. If the app is not running in the background, a cold start process is executed, launching the app to the foreground to receive and decode NFC data, and executing a preset action. If the app page is not displayed on the current page but the app is running in the background, a warm start process is executed, waking the app to the foreground to receive and decode NFC data, and executing a preset action. If the app page is displayed on the current page, the content displayed on the current page can be dynamically updated directly, and a preset action can be executed. Bringing the phone close to the NFC receiving device again will repeat the above process.

[0025] This invention provides an anti-interference NFC tag device and NFC processing method. It not only optimizes the current NFC technology by addressing the issue of calling apps to perform preset operations in different scenarios, enabling contactless point-to-point data transmission and seamless operations such as page navigation or preset actions regardless of whether the app is open, running in the background, or not running in the background; it also provides a new direction for solving the problem of low efficiency of QR codes in certain scenarios, such as group-buying coupon verification, shared bicycle unlocking, conference check-in, and tourist attendance statistics.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-interference NFC tag device, characterized in that: The device comprises, from top to bottom, a PVC panel layer, a chip functional layer, an anti-metal interference panel layer, and a soft magnet panel layer, stacked sequentially. The PVC panel has a QR code area and an NFC sensing area. The chip functional layer includes a chip, a coil surrounding the chip, and a micro-storage unit connected to the chip. The chip functional layer is encapsulated between the PVC panel layer and the anti-metal interference panel layer. The anti-metal interference panel layer is used to resist electromagnetic interference generated by surrounding metal equipment and structures. The soft magnet panel layer is made of soft magnets and is used to adhere to the surface of ferrous objects.

2. The anti-interference NFC tag device and NFC processing method according to claim 1, characterized in that: The QR code is a backup scanning device, printed on waterproof, oil-proof, alcohol-proof, scratch-proof, tear-resistant, and adhesive label printing paper, and pasted on the QR code area of ​​the PVC panel.

3. An NFC processing method for an anti-interference NFC tag device based on any one of claims 1 or 2, characterized in that: Includes the following steps: Step S1: First, write the data to the anti-interference NFC tag device via a computer. Step S2: The user installs a related app that can recognize the corresponding NFC commands on a smart mobile device; Step S3: Unlock the smart mobile device; Step S4: Bring the smart mobile device close to the sensing area of ​​the NFC tag; if the app is not running in the background, a cold start process is executed, launching the app to the foreground to receive and decode NFC data, and executing preset actions; if the app is already running in the background, a warm start process is executed, waking the app to the foreground to receive and decode NFC data, and executing preset actions; if the app's page is currently displayed, the content displayed on the current page can be dynamically updated directly, and preset actions can be executed. Step S5: Bringing the NFC tag close again will repeat the above process.

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