Mobile terminal nfc device

Abstract

The utility model discloses a mobile terminal NFC device relates to NFC near field communication technical field. Mobile terminal NFC device includes the casing, NFC antenna is set up in the casing, main control circuit board is set up in the casing, and main control circuit board includes main control module, read and write power module and communication module, and read and write power module is electrically connected with NFC antenna, and main control module is electrically connected with read and write power module and communication module respectively. The mobile terminal NFC device of utility model embodiment, its simple structure is convenient for carrying, can be connected with mobile terminal and obtains electric energy and data instruction, and the enhanced radio frequency signal and energy are output to NFC antenna through read and write power module, realize the power supply, communication and control to passive NFC equipment (such as electronic lock etc.

Description

Technical Field

[0001] This utility model relates to the field of NFC near-field communication technology, and in particular to a mobile NFC device. Background Technology

[0002] Currently, the NFC function on mobile devices (such as phones / tablets) faces three major bottlenecks: First, insufficient signal strength, as the small area of ​​the NFC antenna built into the phone limits the magnetic field coverage, making it difficult to drive high-power passive devices (such as electronic locks and passive screens); second, lack of power supply capability, as the standard NFC power supply is only 10-15mW, which cannot meet the startup requirements of passive devices (locks often require 50-200mW); and third, compatibility defects, as low- and mid-range phones generally do not have NFC modules and cannot perform NFC interactions. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a mobile NFC device that enhances the power supply and communication capabilities of mobile NFC, thereby enabling passive NFC devices to operate.

[0004] The mobile NFC device according to an embodiment of the present invention includes: case; The NFC antenna is housed within the housing. The main control circuit board is disposed inside the housing. The main control circuit board is provided with a main control module, a read / write power supply module and a communication module. The read / write power supply module is electrically connected to the NFC antenna. The main control module is electrically connected to both the read / write power supply module and the communication module.

[0005] According to some embodiments of the present invention, the housing includes a detachably connected base and a cover, and a cavity for placing the NFC antenna and the main control circuit board is formed between the base and the cover.

[0006] According to some embodiments of the present invention, the main control circuit board is further provided with a real-time clock module, which is electrically connected to the main control module.

[0007] According to some embodiments of the present invention, the main control circuit board is further provided with a voltage regulator module. The input terminal of the voltage regulator module is connected to the input power supply. The voltage regulator module is used to convert the input power supply into a stable power supply and to supply power to the main control module.

[0008] According to some embodiments of the present invention, the main control circuit board is further provided with a storage module, and the storage module is electrically connected to the main control module.

[0009] According to some embodiments of the present invention, the communication module includes a USB interface unit and a USB-to-serial port unit, wherein the USB interface unit is electrically connected to the USB-to-serial port unit, and the USB-to-serial port unit is electrically connected to the main control module.

[0010] According to some embodiments of the present invention, the main control circuit board is further provided with an indicator light module, which is electrically connected to the main control module.

[0011] According to some embodiments of the present invention, a power supply battery is also provided inside the housing, and the power supply battery is electrically connected to the main control circuit board.

[0012] According to some embodiments of the present invention, the main control circuit board is further provided with a Bluetooth module, and the Bluetooth module is electrically connected to the main control module.

[0013] According to some embodiments of this utility model, a snap-fit ​​component is also provided on the outside of the housing.

[0014] The mobile NFC device according to the embodiments of the present invention has at least the following beneficial effects: it has a simple structure, is easy to carry, can connect to a mobile terminal to obtain power and data commands, and outputs enhanced radio frequency signals and energy to the NFC antenna through the read and write power supply module, thereby realizing power supply, communication and control of passive NFC devices (such as electronic locks).

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of the mobile NFC device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a mobile NFC device according to an embodiment of the present invention; Figure 3 This is a circuit diagram of the main control module of the mobile NFC device according to an embodiment of the present invention; Figure 4 This is a circuit diagram of the NFC antenna of the mobile NFC device according to an embodiment of the present invention. Figure 5 A circuit diagram of the read / write power supply module of the mobile NFC device according to an embodiment of this utility model; Figure 6This is a circuit diagram of the communication module of the mobile NFC device according to an embodiment of the present utility model. Figure 7 This is a circuit diagram of the voltage regulator module of the mobile NFC device according to an embodiment of the present invention; Figure 8 This is a circuit diagram of the storage module of the mobile NFC device according to an embodiment of the present invention. Figure 9 This is a circuit diagram of the real-time clock module of the mobile NFC device according to an embodiment of the present invention. Figure 10 This is a circuit diagram of the indicator light module of the mobile NFC device according to an embodiment of the present invention. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. The step numbers in the following embodiments are set only for ease of explanation, and there is no limitation on the order between the steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0020] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] Currently, the NFC function on mobile devices (such as phones / tablets) faces three major bottlenecks: First, insufficient signal strength, as the small area of ​​the NFC antenna built into the phone limits the magnetic field coverage, making it difficult to drive high-power passive devices (such as electronic locks and passive screens); second, lack of power supply capability, as the standard NFC power supply is only 10-15mW, which cannot meet the startup requirements of passive devices (locks often require 50-200mW); and third, compatibility defects, as low- and mid-range phones generally do not have NFC modules and cannot perform NFC interactions.

[0022] Therefore, this utility model embodiment proposes a mobile NFC device with a simple structure, easy to carry, and capable of connecting to a mobile terminal to obtain power and data commands. The device outputs enhanced radio frequency signals and energy to the NFC antenna through a read / write power supply module, thereby enabling power supply, communication, and control of passive NFC devices (such as electronic locks).

[0023] The mobile NFC device of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] This utility model embodiment proposes a mobile NFC device, such as... Figure 1 and Figure 2 As shown, the mobile NFC device includes: a housing 100, an NFC antenna 200, and a main control circuit board 300, wherein the NFC antenna 200 and the main control circuit board 300 are disposed within the housing 100; the main control circuit board 300 includes a main control module 310, a read / write power supply module 320, and a communication module 330, wherein the read / write power supply module 320 is electrically connected to the NFC antenna 200, and the main control module 310 is electrically connected to both the read / write power supply module 320 and the communication module 330.

[0025] The communication module 330 is primarily used to connect with external mobile terminals (such as mobile phones and tablets), enabling the external mobile terminals to power the mobile NFC device and allow it to function properly. Simultaneously, the mobile terminal can also communicate with the mobile NFC device through the communication module 330, sending authorization information and other data commands. After receiving power and data commands from the mobile terminal, the mobile NFC device's read / write power supply module 320 outputs enhanced radio frequency signals and energy to the NFC antenna 200, enabling power supply, communication, and control of passive NFC devices (such as electronic locks).

[0026] The mobile NFC device according to embodiments of this application integrates mobile power supply and communication, achieving dual enhancement of signal and power, and solving the problems of weak mobile NFC signal, insufficient power supply, and the inability of non-NFC mobile devices to drive passive devices. This mobile NFC device has a compact structure, is plug-and-play, and significantly expands the application scenarios of mobile NFC.

[0027] Specifically, such as Figure 3 As shown, in this example, the main control module 310 includes a main control chip U2 and its peripheral circuits. The main control chip U2 is used to control the operation of the read / write power supply module 320, the communication module 330 and the NFC antenna 200, as well as to receive and send data.

[0028] In some embodiments of this application, the circuit of the NFC antenna 200 is as follows: Figure 4 As shown, the RFI1, RFO1, RFI2, and RFO2 ports are connected to the read / write power supply module 320. These ports are used to send signals to the outside world according to the instructions of the read / write power supply module 320, or to receive externally input signals and send them to the read / write power supply module 320. The NFC antenna 200 is mounted on the NFC antenna board and uses a customized copper coil adapted to external devices to improve the magnetic field coverage and capability.

[0029] In some embodiments of this application, the read / write power supply module 320 is as follows: Figure 5 As shown, it includes the U301 read / write chip, which can use chips such as ST25R3911B, supports mainstream protocols such as ISO 18092 (NFCIP-1), ISO 14443A / B, ISO15693, FeliCa and MIFARE Classic, and has dual low-impedance drivers with an output power of up to 1.4W, significantly improving the sensing distance and signal stability.

[0030] Furthermore, in this example, such as Figure 5As shown, the read / write power supply module 320 is also connected to a compensation capacitor array 321, which can precisely adjust the capacitance value of the read / write power supply module 320 to achieve the required electrical performance of the read / write power supply module 320. By changing the electrode spacing or effective area through mechanical or electronic means, the capacitance value can be slightly corrected.

[0031] Furthermore, in some embodiments of this application, such as Figure 6 As shown, the communication module 330 includes a USB interface unit 331 and a USB-to-serial port unit 332. The USB interface unit 331 is electrically connected to the USB-to-serial port unit 332, and the USB-to-serial port unit 332 is electrically connected to the main control module 310. In this example, the USB interface unit 331 uses a Type-C interface chip J2 and connects to an external terminal device through a Type-C interface 130 on the surface of the housing 100, thereby receiving signals sent by the external terminal. The USB-to-serial port unit 332 is used to convert the USB signal into a serial port signal and send it to the main control module 310, enabling the main control module 310 to receive signals from the external device. The mobile NFC device according to the embodiments of this application draws power (5V / 1A) from the mobile terminal through the Type-C interface, requiring no charging and being plug-and-play.

[0032] like Figure 7 As shown, in some embodiments of this application, the main control circuit board 300 is further provided with a voltage regulator module 360. The input terminal of the voltage regulator module 360 ​​is connected to an input power supply. The voltage regulator module 360 ​​is used to convert the input power supply into a stable power supply and power the main control module 310. Specifically, when the USB interface unit 331 is connected to a mobile terminal or a power bank, it can obtain a 5V input power supply. After passing through the voltage regulator module 360, the 5V input power supply is converted into a 3.3V stable power supply to power the main control module 310 and other modules. In this example, the voltage regulator module 360 ​​uses a voltage regulator chip U4, which can be a model such as HX6211.

[0033] like Figure 8 As shown, in some embodiments of this application, the main control circuit board 300 is further provided with a storage module 350, which is electrically connected to the main control module 310. In this example, the storage module 350 uses an EEPROM (Electrically Erasable Programmable Read-Only Memory), specifically a model such as ZD24C1MA-SSGMB. The EEPROM memory expands the storage space of the main control circuit board 300, allowing it to store information such as unlocking records.

[0034] like Figure 9As shown, in some embodiments of this application, the main control circuit board 300 is further provided with a real-time clock module 340, which is electrically connected to the main control module 310. By providing the real-time clock module 340, the time information of the mobile NFC device is not interrupted when the power is off. The real-time clock module 340 is independent of the device's power supply and is powered by the battery BT1.

[0035] like Figure 10 As shown, in some embodiments of this application, the main control circuit board 300 is further provided with an indicator light module 370, which is electrically connected to the main control module 310. By providing the indicator light module 370, different operating states of the device can be indicated by different indicator lights or different indicator light colors.

[0036] like Figure 1 As shown, in some embodiments of this application, the housing 100 includes a detachably connected base 110 and a cover 120, with a cavity 140 formed between the base 110 and the cover 120 for housing the NFC antenna 200 and the main control circuit board 300. The base 110 and the cover 120 are provided with a mutually engaging snap-fit ​​structure, allowing them to snap together.

[0037] like Figure 2 As shown, in some embodiments of this application, a snap-fit ​​component 400 is also provided on the outside of the housing 100. Specifically, in this example, the snap-fit ​​component 400 includes a snap-fit ​​plate 410 and a snap-fit ​​bolt 420. The snap-fit ​​plate 410 is provided with a mounting groove for fixing the snap-fit ​​bolt 420. By providing the snap-fit ​​component 400, the mobile NFC device can be fixed on some devices, such as mobile phones, stands, etc. By providing a structure on the device that matches the snap-fit ​​component 400, the mobile NFC device can be installed on the device, making the mobile NFC device easy to carry. The snap-fit ​​bolt 420 is used for threaded connection with a matching threaded hole on the device, and the snap-fit ​​plate 410 is provided with multiple through holes for cooperating with a matching positioning post on the device to achieve positioning.

[0038] In some embodiments of this application, a power supply battery is also disposed inside the housing 100, and the power supply battery is electrically connected to the main control circuit board 300. By disposing of a power supply battery inside the housing 100, the mobile NFC device can generate its own power without relying on an external device, thereby eliminating the need to connect to an external device and making the use of the mobile NFC device more convenient.

[0039] In some embodiments of this application, the main control circuit board 300 is further provided with a Bluetooth module, which is electrically connected to the main control module 310. By providing a Bluetooth module, the mobile NFC device can communicate not only through the NFC antenna 200 but also through Bluetooth, thus broadening the applicability of the mobile NFC device.

[0040] The mobile NFC device according to the embodiments of this application has a simple structure, is easy to carry, and can connect to a mobile device to obtain power and data commands. It outputs enhanced radio frequency signals and energy to the NFC antenna via a read / write power supply module, enabling power supply, communication, and control of passive NFC devices (such as electronic locks). The mobile NFC device can be powered by an external device or by a built-in battery, making it applicable to a wider range of scenarios. Furthermore, the mobile NFC device can communicate via both the NFC antenna 200 and the Bluetooth module, providing more diverse communication methods.

[0041] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present utility model.

Claims

1. A mobile NFC device, characterized in that, include: case; The NFC antenna is located inside the housing; The main control circuit board is disposed inside the housing. The main control circuit board is provided with a main control module, a read / write power supply module and a communication module. The read / write power supply module is electrically connected to the NFC antenna. The main control module is electrically connected to both the read / write power supply module and the communication module. The communication module is used to connect with an external mobile terminal, enabling the external mobile terminal to power the mobile NFC device. The mobile terminal can also communicate with the mobile NFC device through the communication module. The read / write power supply module is used to obtain power and data commands from the mobile terminal and output enhanced radio frequency signals and energy to the NFC antenna. The read / write power supply module is also connected to a compensation capacitor array, which is used to adjust the capacitance value of the read / write power supply module. The housing is also equipped with a power supply battery, which is electrically connected to the main control circuit board; The outer surface of the housing is also provided with snap-fit ​​components.

2. The mobile NFC device according to claim 1, characterized in that, The housing includes a detachably connected base and a cover, with a cavity formed between the base and the cover for housing the NFC antenna and the main control circuit board.

3. The mobile NFC device according to claim 1, characterized in that, The main control circuit board is also equipped with a real-time clock module, which is electrically connected to the main control module.

4. The mobile NFC device according to claim 1, characterized in that, The main control circuit board is also equipped with a voltage regulator module. The input terminal of the voltage regulator module is connected to the input power supply. The voltage regulator module is used to convert the input power supply into a stable power supply and to supply power to the main control module.

5. The mobile NFC device according to claim 1, characterized in that, The main control circuit board is also equipped with a storage module, which is electrically connected to the main control module.

6. The mobile NFC device according to claim 1, characterized in that, The communication module includes a USB interface unit and a USB-to-serial port unit. The USB interface unit is electrically connected to the USB-to-serial port unit, and the USB-to-serial port unit is electrically connected to the main control module.

7. The mobile NFC device according to claim 1, characterized in that, The main control circuit board is also equipped with an indicator light module, which is electrically connected to the main control module.

8. The mobile NFC device according to claim 1, characterized in that, The main control circuit board is also equipped with a Bluetooth module, which is electrically connected to the main control module.

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