Intelligent internet-of-things door lock control device

Abstract

The utility model relates to an intelligent IOT (Internet of Things) door lock control device which comprises a first shell, a second shell, an unlocking recognition module, a control module and a control module, wherein the unlocking recognition module is arranged in the first shell and is used for carrying out identity recognition and generating unlocking recognition information; the main control board, the lock body driving board and the communication board are arranged in the second shell and are mutually independent; the first display screen is arranged on the first shell and is connected with the main control board; the second display screen is arranged on the second shell and is connected with the main control board through a lock body driving board; the main control board is connected with the unlocking identification module and the lock body driving board, and is used for receiving the unlocking identification information and generating a control level to control the lock body driving board to act; the lock body driving plate is connected with the lock body in the door body and is used for driving the lock body to unlock; the main control board is connected with the communication board through the lock body driving board and used for being in communication connection with an external network through the communication board. Wherein the main control board comprises a single MCU (Microprogrammed Control Unit) chip. According to the utility model, through the arrangement of a single control panel, highly centralized control of the door lock is realized.

Description

Technical Field

[0001] This utility model relates to the field of smart door lock technology, and more specifically, to a smart IoT door lock control device. Background Technology

[0002] Traditional home door locks typically use mechanical keys or card unlocking, which can lead to embarrassing situations where you forget your keys or cards, causing inconvenience and lower security. While some multi-functional door lock devices with features like facial recognition, fingerprint recognition, and password recognition have emerged, these devices generally lack a high level of intelligence. They typically use multiple motherboards and more than three MCUs (microcontroller units) as control boards, resulting in higher costs. Furthermore, the use of multiple MCUs for communication with external devices increases response time, negatively impacting the user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an intelligent IoT door lock control device, which addresses the aforementioned technical deficiencies of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct an intelligent IoT door lock control device, including: a first housing disposed on the outside of the door and a second housing disposed on the inside of the door, and

[0005] An unlocking and identification module, located inside the first housing, is used to perform identity recognition and generate unlocking and identification information.

[0006] The main control board, lock body drive board, and communication board are located inside the second housing and are independent of each other.

[0007] A first display screen is mounted on the first housing and connected to the main control board;

[0008] The second display screen of the main control board is mounted on the second housing and connected to the lock body drive board.

[0009] The main control board is connected to the unlocking identification module and the lock body drive board, and is used to receive the unlocking identification information and generate a control level to control the operation of the lock body drive board.

[0010] The lock body drive plate is connected to the lock body inside the door body and is used to drive the lock body to unlock.

[0011] The main control board is connected to the communication board through the lock body drive board, and is used to establish a communication connection with an external network through the communication board.

[0012] The main control board contains a single MCU chip.

[0013] Preferably, in the smart IoT door lock control device of this utility model, the unlocking and identification module includes a cat eye identification module, a touch identification module, an NFC identification module, and a fingerprint identification module;

[0014] The main control board includes an MCU chip U2 and multiple connection ports. The MCU chip U2 is connected to the cat eye recognition module, the touch recognition module, the NFC recognition module, the fingerprint recognition module and the first display screen respectively through the multiple connection ports.

[0015] Furthermore, the unlocking and identification module is used to perform identity verification through any one of the cat eye identification module, the touch identification module, the NFC identification module, and the fingerprint identification module.

[0016] Preferably, in the smart IoT door lock control device of this utility model, the plurality of connection ports include a first connection port for connecting the cat eye recognition module; the first connection port includes a connector J4; the MCU chip U2 is used to receive data signals from the cat eye recognition module through the pins of the connector J4.

[0017] Preferably, in the intelligent IoT door lock control device of this utility model, the plurality of connection ports include a second connection port for connecting the fingerprint recognition module; the second connection port includes a connector J2, an electrostatic discharge protection diode T1, an electrostatic discharge protection diode T2, an electrostatic discharge protection diode T3, an electrostatic discharge protection diode T4, an electrostatic discharge protection diode T5, and a capacitor C9;

[0018] The first pin of connector J2 is connected to the first end of electrostatic discharge protection diode T4; the second pin of connector J2 is connected to the first end of electrostatic discharge protection diode T1 and the IRO_FIN signal output pin of MCU chip U2; the third pin of connector J2 is connected to the first end of electrostatic discharge protection diode T5 and the first end of capacitor C9; the fourth pin of connector J2 is connected to the first end of electrostatic discharge protection diode T2 and the UART signal input pin of MCU chip U2; and the fifth pin of connector J2 is connected to the first end of electrostatic discharge protection diode T3 and the UART signal output pin of MCU chip U2.

[0019] The second terminal of the electrostatic discharge protection diodes T1, T2, T3, T4, and T5, and the capacitor C9 are grounded.

[0020] Preferably, in the smart IoT door lock control device of this utility model, the touch recognition module includes a touch screen, and the plurality of connection ports include a third connection port for connecting the touch screen; the third connection port includes a connector J3 and a touch chip U7;

[0021] The first to thirteenth pins of the connector J3 are connected one-to-one with the touch signal input pins of the touch chip U7. The SDA signal pin and the SCL signal pin of the touch chip U7 are respectively connected to the SCL_touch signal pin and the SDA_touch signal pin of the MCU chip U2.

[0022] Preferably, in the smart IoT door lock control device of this utility model, the connection port includes a fourth connection port for connecting the NFC identification module; the fourth connection port includes a connector J3, an NFC communication chip U11, and the peripheral circuit of the NFC communication chip U11;

[0023] The fourteenth and fifteenth pins of the connector J3 are connected to the TX1 and TX2 pins of the NFC communication chip U11 respectively via the peripheral circuit of the NFC communication chip U11; the SCL, SDO, and SDA signal pins of the NFC communication chip U11 are connected to the SCL, SDO, and SDA signal pins of the MCU chip U2 respectively; and the CS1 signal pin of the NFC communication chip U11 is connected to the CS1 signal pin of the MCU chip U2.

[0024] Preferably, in the smart IoT door lock control device of this utility model, the first display screen is an OLED screen, and the plurality of connection ports include an OLED screen connection port; the OLED screen connection port includes a connector J13 and peripheral circuitry corresponding to the connector J13;

[0025] The first data pin and the second data pin of connector J13 are respectively connected to the SCL_LED signal pin and the SDA_LED signal pin of MCU chip U2.

[0026] Preferably, in the intelligent IoT door lock control device of this utility model, the main control board is provided with a first inter-board interface, and the lock body drive board includes: a second inter-board interface for connecting the communication board, a third inter-board interface for connecting the first inter-board interface, and a battery interface for connecting the battery box; and

[0027] A power conversion circuit that connects to the battery interface and is used to convert the power supply to the battery in the battery box.

[0028] Connect the third board interface to receive the motor drive circuit connected to the main control board through the third board interface;

[0029] The motor drive circuit is connected to the Fin signal pin and the Rin signal pin of the MCU chip U2 through the first inter-board interface and the third inter-board interface.

[0030] Preferably, in the smart IoT door lock control device of this utility model, the motor drive circuit includes a motor drive chip U2 and peripheral circuits of the motor drive chip; wherein, the model of the motor drive chip U2 is LN8516.

[0031] Preferably, in the intelligent IoT door lock control device of this utility model, the second display screen is an LCD screen, the communication board includes a fourth board interface and an LCD screen interface, and the LCD screen is connected to the MCU chip U2 through the LCD screen interface, the fourth board interface and the second board interface.

[0032] The intelligent IoT door lock control device of this utility model has the following advantages: it achieves highly centralized control of the door lock through a single control board. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0034] Figure 1 This is a logic block diagram of an embodiment of an intelligent IoT door lock control device according to this utility model;

[0035] Figure 2 This is a partial circuit diagram of one embodiment of the main control board in this utility model;

[0036] Figure 3 This is a partial circuit diagram of one embodiment of the main control board in this utility model;

[0037] Figure 4 This is a partial circuit diagram of one embodiment of the main control board in this utility model;

[0038] Figure 5 This is a partial circuit diagram of one embodiment of the main control board in this utility model;

[0039] Figure 6 This is a partial circuit diagram of one embodiment of the main control board in this utility model;

[0040] Figure 7 This is a partial circuit diagram of one embodiment of the lock body drive board in this utility model;

[0041] Figure 8 This is a partial circuit diagram of one embodiment of the lock body drive board in this utility model;

[0042] Figure 9 This is a partial circuit diagram of one embodiment of the communication board in this utility model. Detailed Implementation

[0043] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0044] like Figure 1 The image shows an embodiment of an intelligent IoT door lock control device according to the present invention. Figure 1 In one embodiment of the intelligent IoT door lock control device of the present invention, the device includes: a first housing 100 disposed on the outside of the door and a second housing 200 disposed on the inside of the door; an unlocking identification module 110 disposed within the first housing 100 for performing identity recognition and generating unlocking identification information; a main control board 210, a lock body drive board 220, and a communication board 230 disposed within the second housing 200 and independent of each other; a first display screen 120 disposed on the first housing 100 and connected to the main control board 210; and a second display screen 120 disposed on the second housing 200. The second display screen 240 is connected to the main control board 210 via the lock body drive board 220; the main control board 210 is connected to the unlocking identification module 110 and the lock body drive board 220, and is used to receive unlocking identification information and generate control levels to control the operation of the lock body drive board 220; the lock body drive board 220 is connected to the lock body inside the door body, and is used to drive the lock body to unlock or lock; the main control board 210 is connected to the communication board 230 via the lock body drive board 220, and is used to form a communication connection with the external network through the communication board 230, wherein the main control board 210 contains only a single MCU chip.

[0045] Specifically, the door lock control device is mainly used to control the movement of the lock body to lock or unlock the door. The door lock control device has a first housing 100 located on the outside of the door and a second housing 200 located on the inside of the door, the placement depending on the specific scenario. The first housing 100 and the second housing 200 have the same or similar shape and are symmetrically arranged on both sides of the door. The first housing 100 contains an unlocking identification module 110 for identity recognition and generating unlocking identification information based on the recognition results. The main control board 210, lock body drive board 220, and communication board 230 located in the second housing 200 are independent PCBs. This independent PCB arrangement makes it easier to locate problems and maintain or replace faulty components when the entire device malfunctions.

[0046] In this device, the first display screen 120, mounted on the first housing 100, can be understood as an outdoor screen or door-exterior screen, used for information interaction between outdoor personnel and the control device, and providing an interactive interface for outdoor personnel to input relevant information. The first display screen 120 is directly connected to the main control board 210, which is positioned as close as possible to the first housing 100 when installed within the second housing 200. The second display screen 240, mounted on the second housing 200, can be understood as an indoor screen or door-exterior screen, used for indoor personnel to observe visitor information from outside. The second display screen 240 is connected to the main control board 210 via the lock drive board 220. This connection allows the position of the main control board 210 to be less affected by the positions of both the first display screen 120 and the second display screen 240, making it easier to arrange within the second housing 200.

[0047] The main control board 210 is connected to the unlocking identification module 110. Upon receiving unlocking identification information generated by the unlocking identification module 110, it generates a corresponding control level. The lock body drive board 220 is connected to the main control board 210 and the lock body inside the door. Upon receiving the control level output by the main control board 210, it controls the lock body to move, thus unlocking or locking. Simultaneously, the main control board 210 can also be connected to the communication board 230 via the lock body drive board 220. The communication board 230 is used to connect to an external network, ultimately establishing the communication relationship between the main control board 210 and the external network. This structure explains why, since the lock body is inside the door, the lock body drive board 220 is positioned between the main control board 210 and the communication board 230 to ensure effective communication between the communication board 230 and the external network. Furthermore, the communication board 230 is positioned closer to the interior to better utilize the indoor wireless network. The communication board 230 may include multiple modules such as a WIFI module, a Bluetooth module, and a data communication module.

[0048] In addition, the main control board 210 is equipped with only a single MCU chip and its corresponding peripheral circuits, which can reduce the response time between the main control board 210 and each module while ensuring the functionality of the main control board 210, thereby improving the user experience.

[0049] In one embodiment, such as Figure 2 As shown, the unlocking and identification module 110 includes a cat eye recognition module, a touch recognition module, an NFC recognition module, and a fingerprint recognition module; the main control board 210 includes an MCU chip U2 and multiple connection ports. The MCU chip U2 is connected to the cat eye recognition module, the touch recognition module, the NFC recognition module, the fingerprint recognition module, and the first display screen 120 respectively through the multiple connection ports; and the unlocking and identification module 110 is used to perform identity recognition through any one of the cat eye recognition module, the touch recognition module, the NFC recognition module, and the fingerprint recognition module.

[0050] Specifically, the control device can be equipped with multiple different unlocking and identification modules 110 to obtain unlocking and identification information based on different user identification information for unlocking operations. Common unlocking and identification modules 110 may include a cat-eye recognition module, a touch recognition module, an NFC recognition module, and a fingerprint recognition module. It should be emphasized that in this embodiment, the specific circuits of the cat-eye recognition module, touch recognition module, NFC recognition module, and fingerprint recognition module are not limited; that is, the corresponding functions can be achieved using currently common cat-eye recognition circuits, touch recognition circuits, NFC recognition circuits, and fingerprint recognition circuits. In the main control board 210, the MCU chip U2 is connected to different unlocking and identification modules 110 through multiple connection ports. The MCU chip U2 typically obtains unlocking and identification information from only one unlocking and identification module 110 to trigger unlocking. Simultaneously, the MCU chip U2 is also connected to the first display screen 120 through a corresponding connection port.

[0051] In one embodiment, such as Figure 3 As shown, multiple connection ports include a first connection port for connecting the cat-eye recognition module; the first connection port includes connector J4; the MCU chip U2 is used to receive data signals from the cat-eye recognition module through the pins of connector J4. Specifically, the main control board 210 is connected to the cat-eye recognition module through connector J4, and the MCU chip U2 sets corresponding pins to form a signal connection with the corresponding pins of connector J4, enabling signal transmission between the cat-eye recognition module and the MCU chip U2. The signals transmitted between the cat-eye recognition module and the MCU chip U2 may include face recognition signals, and the specific signal pins may vary depending on the specific chip used in the circuit. This is not limited here; the purpose of this embodiment is to emphasize the role of connector J4 in signal transmission between the cat-eye recognition module and the MCU chip U2.

[0052] In one embodiment, such as Figure 3As shown, multiple connection ports include a second connection port for connecting the fingerprint recognition module; the second connection port includes connector J2, electrostatic discharge (ESD) diodes T1, T2, T3, T4, and T5, and capacitor C9; the first pin of connector J2 is connected to the first end of ESD diode T4, the second pin of connector J2 is connected to the first end of ESD diode T1 and the IRO_FIN signal output pin of MCU chip U2, the third pin of connector J2 is connected to the first end of ESD diode T5 and the first end of capacitor C9, the fourth pin of connector J2 is connected to the first end of ESD diode T2 and the UART signal input pin of MCU chip U2, and the fifth pin of connector J2 is connected to the first end of ESD diode T3 and the UART signal output pin of MCU chip U2; the second ends of ESD diodes T1, T2, T3, T4, T5, and capacitor C9 are grounded.

[0053] Specifically, the main control board 210 can connect to the fingerprint recognition module via connector J2. The MCU chip U2 has corresponding pins that form signal connections with the corresponding pins of connector J2, enabling signal transmission between the fingerprint recognition module and the MCU chip U2. An electrostatic discharge (ESD) protection circuit corresponding to connector J2 is also included to prevent static electricity generated when a finger touches the device. This ESD protection circuit consists of multiple ESD protection diodes to protect the power and signal pins of connector J2.

[0054] In one embodiment, such as Figure 4 As shown, the touch recognition module includes a touch screen and multiple connection ports, including a third connection port for connecting to the touch screen; the third connection port includes a connector J3 and a touch chip U7; the first to thirteenth pins of the connector J3 are connected one-to-one with the touch signal input pins of the touch chip U7, and the SDA signal pin and SCL signal pin of the touch chip U7 are respectively connected to the SCL_touch signal pin and the SDA_touch signal pin of the MCU chip U2.

[0055] Specifically, the main control board 210 can be connected to the touch recognition module via connector J3. The touch recognition module includes a touchscreen, which is connected to connector J3. The touchscreen generates touch signals based on user input, and the touch chip U7 receives these signals through pins of connector J3 and sends the processed signals to the MCU chip U2 through corresponding pins. The touch chip U7 can be a CSK14T. In one specific embodiment, the connection between the touch chip U7, the MCU chip U2, and connector J3, along with the corresponding peripheral circuitry, can be constructed based on this specific device.

[0056] In one embodiment, such as Figure 5 and Figure 6 As shown, the connection port includes a fourth connection port for connecting the NFC identification module; the fourth connection port includes connector J3, NFC communication chip U11, and peripheral circuitry of NFC communication chip U11; the fourteenth and fifteenth pins of connector J3 are connected to the TX1 and TX2 pins of NFC communication chip U11 respectively via the peripheral circuitry of NFC communication chip U11; the SCL, SDO, and SDA signal pins of NFC communication chip U11 are connected to the SCL, SDO, and SDA signal pins of MCU chip U2 respectively; and the CS1 signal pin of NFC communication chip U11 is connected to the CS1 signal pin of MCU chip U2.

[0057] Specifically, the main control board 210 can connect to the NFC identification module via connector J3. It can be understood that the third and fourth connection ports share connector J3. The NFC communication chip U11 can be a WS1850S; that is, the peripheral circuit of this chip can be constructed based on the typical circuitry of this model. The connection between connector J3 and the NFC communication chip U11 is achieved through the corresponding peripheral circuit. Simultaneously, the NFC communication chip U11 and the MCU chip U2 establish SPI communication.

[0058] In one embodiment, such as Figure 5 As shown, the first display screen 120 is an OLED screen, and multiple connection ports include an OLED screen connection port; the OLED screen connection port includes a connector J13 and peripheral circuits corresponding to the connector J13; the first data pin and the second data pin of the connector J13 are respectively connected to the SCL_LED signal pin and the SDA_LED signal pin of the MCU chip U2.

[0059] Specifically, the main control board 210 can be connected to the first display screen 120 via connector J13. The first display screen 120 can be an OLED screen, and connector J13 can be an OLED screen connector. The appropriate connector J13 can be selected according to the model of the OLED screen, and the corresponding peripheral circuitry can be used to realize the model transmission between the OLED screen and the MCU chip U2.

[0060] In one embodiment, such as Figure 5 , Figure 7 and Figure 8 As shown, the main control board 210 is provided with a first inter-board interface, and the lock body drive board 220 includes: a second inter-board interface for connecting to the communication board 230, a third inter-board interface for connecting to the first inter-board interface, and a battery interface for connecting to the battery box; and a power conversion circuit connected to the battery interface for power conversion of the power supply to the battery in the battery box; and a motor drive circuit connected to the third inter-board interface for receiving the motor drive circuit connected to the main control board 210 through the third inter-board interface; wherein, the motor drive circuit is connected to the Fin signal pin and the Rin signal pin of the MCU chip U2 through the first inter-board interface and the third inter-board interface.

[0061] Specifically, the first inter-board interface includes connector J10, and the third inter-board interface includes connector J5. The main control board 210 and the lock body drive board 220 are connected via connectors J10 and J5. The second inter-board interface includes connector J6, and the communication board 230 is connected to connector J6. Some pins of connector J5 and some pins of connector J6 form a signal connection, allowing the MCU chip U2 to communicate with the communication board 230 via connectors J10, J5, and J6. The motor drive circuit is connected to the MCU chip U2 via connectors J10 and J5 to receive control signals output by the controller U1.

[0062] In one specific embodiment, the motor drive circuit includes a motor drive chip U2 and peripheral circuitry for the motor drive chip; wherein, the motor drive chip U2 is model LN8516. The corresponding peripheral circuitry can be configured according to the model of the motor drive chip U2 to obtain the drive level for the lock body.

[0063] In one embodiment, such as Figure 9As shown, the second display screen 240 is an LCD screen. The communication board 230 includes a fourth inter-board interface and an LCD screen interface. The LCD screen is connected to the MCU chip U2 through the LCD screen interface, the fourth inter-board interface, and the second inter-board interface. Specifically, the fourth inter-board interface includes connector J1, and the LCD screen interface includes connector J2. The LCD screen is connected to the communication board 230 through connector J2, and its signals are connected to the lock body drive board 220 through connector J1 in the communication board 230, so as to form data communication with the MCU chip U2 through connector J10 in the lock body drive board 220.

[0064] Through the aforementioned connections, each component can be controlled via a single MCU chip U2, improving the overall integration of the control circuit and reducing product costs.

[0065] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A smart IoT door lock control device, characterized in that, include: The first housing located on the outside of the door and the second housing located on the inside of the door, and An unlocking and identification module, located inside the first housing, is used to perform identity recognition and generate unlocking and identification information. The main control board, lock body drive board, and communication board are located inside the second housing and are independent of each other. A first display screen is mounted on the first housing and connected to the main control board; The second display screen of the main control board is mounted on the second housing and connected to the lock body drive board. The main control board is connected to the unlocking identification module and the lock body drive board, and is used to receive the unlocking identification information and generate a control level to control the operation of the lock body drive board. The lock body drive plate is connected to the lock body inside the door body and is used to drive the lock body to unlock. The main control board is connected to the communication board through the lock body drive board, and is used to establish a communication connection with an external network through the communication board; The main control board contains a single MCU chip.

2. The intelligent IoT door lock control device according to claim 1, characterized in that, The unlocking and recognition module includes a cat-eye recognition module, a touch recognition module, an NFC recognition module, and a fingerprint recognition module; The main control board includes an MCU chip U2 and multiple connection ports. The MCU chip U2 is connected to the cat eye recognition module, the touch recognition module, the NFC recognition module, the fingerprint recognition module and the first display screen respectively through the multiple connection ports. Furthermore, the unlocking and identification module is used to perform identity verification through any one of the cat eye identification module, the touch identification module, the NFC identification module, and the fingerprint identification module.

3. The intelligent IoT door lock control device according to claim 2, characterized in that, The plurality of connection ports include a first connection port for connecting the cat eye recognition module; the first connection port includes a connector J4; the MCU chip U2 is used to receive data signals from the cat eye recognition module through the pins of the connector J4.

4. The intelligent IoT door lock control device according to claim 2, characterized in that, The plurality of connection ports include a second connection port for connecting the fingerprint recognition module; the second connection port includes connector J2, electrostatic discharge protection diode T1, electrostatic discharge protection diode T2, electrostatic discharge protection diode T3, electrostatic discharge protection diode T4, electrostatic discharge protection diode T5 and capacitor C9; The first pin of connector J2 is connected to the first end of the electrostatic discharge protection diode T4; the second pin of connector J2 is connected to the first end of the electrostatic discharge protection diode T1 and the IRO_FIN signal output pin of the MCU chip U2; the third pin of connector J2 is connected to the first end of the electrostatic discharge protection diode T5 and the first end of the capacitor C9; the fourth pin of connector J2 is connected to the first end of the electrostatic discharge protection diode T2 and the UART signal input pin of the MCU chip U2; and the fifth pin of connector J2 is connected to the first end of the electrostatic discharge protection diode T3 and the UART signal output pin of the MCU chip U2. The second terminal of the electrostatic discharge protection diodes T1, T2, T3, T4, and T5, and the capacitor C9 are grounded.

5. The intelligent IoT door lock control device according to claim 2, characterized in that, The touch recognition module includes a touch screen, and the plurality of connection ports include a third connection port for connecting to the touch screen; the third connection port includes a connector J3 and a touch chip U7; The first to thirteenth pins of the connector J3 are connected one-to-one with the touch signal input pins of the touch chip U7. The SDA signal pin and the SCL signal pin of the touch chip U7 are respectively connected to the SCL_touch signal pin and the SDA_touch signal pin of the MCU chip U2.

6. The intelligent IoT door lock control device according to claim 5, characterized in that, The connection port includes a fourth connection port for connecting the NFC identification module; the fourth connection port includes a connector J3, an NFC communication chip U11, and peripheral circuitry of the NFC communication chip U11. The fourteenth and fifteenth pins of the connector J3 are connected to the TX1 and TX2 pins of the NFC communication chip U11 respectively via the peripheral circuit of the NFC communication chip U11; the SCL, SDO, and SDA signal pins of the NFC communication chip U11 are connected to the SCL, SDO, and SDA signal pins of the MCU chip U2 respectively; and the CS1 signal pin of the NFC communication chip U11 is connected to the CS1 signal pin of the MCU chip U2.

7. The intelligent IoT door lock control device according to claim 2, characterized in that, The first display screen is an OLED screen, and the plurality of connection ports include an OLED screen connection port; the OLED screen connection port includes a connector J13 and peripheral circuitry corresponding to the connector J13; The first data pin and the second data pin of connector J13 are respectively connected to the SCL_LED signal pin and the SDA_LED signal pin of MCU chip U2.

8. The intelligent IoT door lock control device according to claim 2, characterized in that, The main control board is provided with a first inter-board interface, and the lock body drive board includes: a second inter-board interface for connecting to the communication board, a third inter-board interface for connecting to the first inter-board interface, and a battery interface for connecting to the battery box; and A power conversion circuit that connects to the battery interface and is used to convert the power supply to the battery in the battery box. Connect the third board interface to receive the motor drive circuit connected to the main control board through the third board interface; The motor drive circuit is connected to the Fin signal pin and the Rin signal pin of the MCU chip U2 through the first inter-board interface and the third inter-board interface.

9. The intelligent IoT door lock control device according to claim 8, characterized in that, The motor drive circuit includes a motor drive chip U2 and peripheral circuits of the motor drive chip; wherein, the motor drive chip U2 is model LN8516.

10. The intelligent IoT door lock control device according to claim 8, characterized in that, The second display screen is an LCD screen. The communication board includes a fourth inter-board interface and an LCD screen interface. The LCD screen is connected to the MCU chip U2 through the LCD screen interface, the fourth inter-board interface and the second inter-board interface.

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