AI voice interaction and multifunctional integrated environment control system control terminal

Abstract

The application discloses an AI voice interaction and multifunctional integrated environment control system control terminal, which comprises main control chips U6A and U6B, an RS485 communication module, an infrared receiving module, an SHT20 temperature and humidity collecting module, an LCD screen module, a buzzer module, a power supply ESD protection module and an RTC clock module, wherein the main control chip U6B is a core control unit, and the main control chip U6A is an LCD backlight driving control unit.In the application, the defects of single control mode of the traditional environment control system are effectively solved by the function-divided main control chips (the main control chip U6B core control + the main control chip U6A backlight driving), the multi-module integration of voice input, double communication channels, environment collection and man-machine feedback, and the multifunctional integrated environment control system control terminal realizes diversified control mode, function integration and stable operation, improves the applicability in various environment control scenes, and improves the user operation convenience and the intelligent level of system control.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, specifically to a control terminal for an AI voice interaction and multi-functional integrated environmental control system. Background Technology

[0002] Currently, with the increasing improvement of home environment, environmental control systems such as air conditioning systems, heat pump systems, and fresh air systems are widely used.

[0003] In the use of environmental control systems, in order to facilitate the control and adjustment of the system based on real-time temperature and humidity data, the control method of integrating data display and system control is often adopted. Although this ensures the accuracy of control, the single control method brings inconvenience to use and also affects the applicability of the environmental control system in different usage environments. Utility Model Content

[0004] This application provides an AI voice interaction and multi-functional integrated environmental control system control terminal, which aims to at least improve the technical problems existing in the prior art.

[0005] In accordance with the above objectives, this application provides an AI voice interaction and multi-functional integrated environmental control system control terminal, characterized in that it includes: The main control chip includes U6A and U6B, wherein the main control chip U6B is the core control unit and the main control chip U6A is the LCD backlight drive control unit; A voice input module, connected to the main control chip U6B, is used to collect voice commands and transmit them to the main control chip U6B; The RS485 communication module is connected to the main control chip U6B and is used to realize communication and interaction between the control terminal and the environmental control system through the RS485 bus. An infrared receiving module is connected to the main control chip U6B and is used to receive infrared commands or send infrared control signals to the environmental control system. It forms a dual communication channel with the RS485 communication module. The SHT20 temperature and humidity acquisition module is connected to the main control chip U6B and is used to collect ambient temperature and humidity data and feed it back to the main control chip U6B. The LCD screen module includes a touch screen unit and an LCD backlight driving unit. The touch screen unit is connected to the main control chip U6B and is used to call up and display environmental data, device status and command execution results, and supports control commands to be issued by the touch screen. The LCD backlight driving unit is connected to the main control chip U6A and is used to provide backlight driving for the LCD screen. The buzzer module is connected to the main control chip U6B and is used to provide audible feedback on instruction execution results and abnormal states. The power supply ESD protection module is connected to the power supply terminals of the main control chips U6A and U6B and each functional module respectively, and is used to resist electrostatic shock. The RTC clock module is connected to the main control chip U6B and is used to provide time synchronization and timing control functions.

[0006] This application has the following beneficial effects: By using a multi-functional main control chip (main control chip U6B core control + main control chip U6A backlight driver), combined with the integration of multiple modules such as voice input, dual communication channels, environmental acquisition, and human-machine feedback, it effectively solves the defect of the single control mode of traditional environmental control systems, realizes diversified control modes, integrated functions, and stable operation, improves the applicability in various environmental control scenarios, and enhances the user's ease of operation and the level of system control intelligence.

[0007] Furthermore, the voice input module includes dual microphones MIC1 and MIC2 and a MICBIAS bias circuit. The signal output terminals of the dual microphones MIC1 and MIC2 are respectively connected to the MICP1 pin, MICP2 pin, MICN1 pin, and MICN2 pin of the main control chip U6B. The MICBIAS bias circuit is connected to the MICBIAS pin of the main control chip U6B to provide a working bias voltage for the microphones.

[0008] Furthermore, the RS485 communication module includes a 485_TX pin, a 485_RX pin, and a 485_EN control pin. The 485_TX pin, 485_RX pin, and 485_EN control pin are respectively connected to the corresponding pins of the main control chip U6B. The RS485 communication module A pin is connected to the RS485A signal terminal, and the RS485 communication module B pin is connected to the RS485B signal terminal.

[0009] Furthermore, the infrared receiving module includes an infrared receiving head, and the signal output terminal of the infrared receiving head is connected to the IR1 pin of the main control chip U6B.

[0010] Furthermore, the SHT20 temperature and humidity acquisition module is connected to the main control chip U6B via the I2C communication protocol. The SDA pin of the SHT20 temperature and humidity acquisition module is connected to the SHT20_SDA pin of the main control chip U6B, and the SCL pin of the SHT20 temperature and humidity acquisition module is connected to the SHT20_SCL pin of the main control chip U6B. Both the SHT20_SDA pin and the SHT20_SCL pin are connected in series with a 10KΩ pull-up resistor to a 3V3 power supply.

[0011] Furthermore, the TP_INT, TP_SDA, TP_SCL, and TP_REST pins of the touchscreen unit of the LCD screen module are respectively connected to the corresponding pins of the main control chip U6B; the LEDA and LEDK pins of the backlight driving unit of the LCD screen module are connected to the corresponding pins of the main control chip U6A; and the LCD_VCC pin of the backlight driving unit of the LCD screen module is connected to the output terminal of the main control chip U6A.

[0012] Furthermore, the buzzer module includes a buzzer, an NPN transistor, and a current-limiting resistor. The base of the NPN transistor is connected to the SPK-CTL pin of the main control chip U6B via the current-limiting resistor. The collector of the NPN transistor is connected to the buzzer, and the emitter of the NPN transistor is grounded.

[0013] Furthermore, the power supply ESD protection module includes multiple ESD5Z3V3 diodes, which are connected in parallel between the power supply terminal of the main control chip U6A, the WIFI_VCC power supply terminal, the DP signal terminal, the DN signal terminal of the main control chip U6B, and ground.

[0014] Furthermore, the RTC clock module uses a 32.768KHz crystal oscillator, and the two pins of the crystal oscillator are respectively connected to the corresponding RTC pins of the main control chip U6B.

[0015] Furthermore, it also includes a memory chip U7, whose QSPI1_CS, QSPI1_IO0, QSPI1_IO1, QSPI1_IO2, QSPI1_IO3, and QSPI1_CLK pins are respectively connected to the corresponding pins of the main control chip U6B to implement data storage functions.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a circuit schematic diagram of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application; Figure 2 This is a circuit diagram of the main control chip U6A of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application; Figure 3 This is a circuit diagram of the main control chip U6B of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application; Figure 4This is a circuit diagram of the voice input module of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application; Figure 5 This is a circuit diagram of an infrared receiving module of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application. Figure 6 This is a circuit diagram of the SHT20 temperature and humidity acquisition module of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application; Figure 7 This is a circuit diagram of the LCD module and power ESD protection module of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application. Figure 8 This is a circuit diagram of the clock module of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application; Figure 9 This is a circuit diagram of the storage chip U7 of an AI voice interaction and multi-functional integrated environmental control system control terminal provided in an exemplary embodiment of this application. Detailed Implementation

[0018] To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.

[0019] It should be understood that the described embodiments are merely some, not all, of the embodiments described in this application. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort are within the scope of protection of this application.

[0020] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0021] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0023] As attached Figure 1-9 As shown, this application provides an AI voice interaction and multi-functional integrated environmental control system control terminal through the following technical solution, including main control chips U6A and U6B, voice input module, RS485 communication module, infrared receiving module, SHT20 temperature and humidity acquisition module, LCD screen module, buzzer module, power supply ESD protection module, RTC clock module and storage chip U7. Each module is connected through corresponding pins to form a collaborative closed-loop control architecture.

[0024] Specifically, the main control chip is the core control hub of the control terminal, which includes two functional units, U6A and U6B. The two have clear division of labor and work together: the main control chip U6B is the core control unit, responsible for core tasks such as instruction parsing, data processing, and module scheduling. All functional modules involving signal acquisition, instruction sending, and data storage are directly connected to the main control chip U6B; the main control chip U6A is the LCD backlight drive control unit, which is only responsible for the backlight drive of the LCD screen module and is only connected to the backlight drive unit of the LCD screen module. It provides a stable backlight power supply to the LCD screen through dedicated drive logic, avoiding circuit interference caused by the mixing of core control and backlight drive functions, and improving the overall operational stability.

[0025] The voice input module, connected to the main control chip U6B, is a key component for realizing voice interaction. It includes dual microphones MIC1 and MIC2 and a MICBIAS bias circuit. The dual microphones use differential input. The signal output of MIC1 is connected to the MICP1 pin (positive signal) and MICN1 pin (negative signal) of the main control chip U6B, and the signal output of MIC2 is connected to the MICP2 pin (positive signal) and MICN2 pin (negative signal) of the main control chip U6B. This effectively suppresses ambient noise and improves the clarity of voice command acquisition. One end of the MICBIAS bias circuit is connected to the MICBIAS pin of U6B, and the other end provides a stable operating bias voltage for the dual microphones. This ensures that the microphones continuously acquire voice commands at a preset sensitivity and transmits the acquired analog voice signal to the main control chip U6B. The signal processing unit inside the main control chip U6B then performs analog-to-digital conversion and command parsing.

[0026] It should be noted that the main control chips U6A and U6B in this application are T5-E1-IPEX modules. In addition to completing local data processing and execution, these modules can also connect to the cloud platform and call the AI ​​module on the cloud platform. Combined with real-time environmental temperature and humidity data, they can realize AI processing of voice, infrared and other control commands, thereby improving the user experience of the environmental control system.

[0027] The RS485 communication module, also connected to the main control chip U6B, is the core channel for wired communication between the control terminal and the environmental control system. It includes a 485_TX pin (transmitter), a 485_RX pin (receiver), and a 485_EN control pin (communication direction control). The 485_TX and 485_RX pins are connected to the corresponding UART communication pins of the main control chip U6B, enabling bidirectional data transmission between the main control chip U6B and the RS485 communication module. The 485_EN control pin is connected to the general-purpose I / O pins of the main control chip U6B. The main control chip U6B controls the working mode of the RS485 communication module by outputting high and low levels. When the level is high, the module is in the transmitting state, and when the level is low, it is in the receiving state to avoid communication conflicts. In addition, the RS485 communication module also has pin A (differential positive signal terminal) and pin B (differential negative signal terminal), which are respectively connected to the RS485A signal terminal and RS485B signal terminal of the control terminal. It establishes a connection with the controller or execution unit of the environmental control system through the RS485 bus to realize the data interaction of control command issuance and equipment status feedback.

[0028] The infrared receiving module and the RS485 communication module together form the dual communication channels of the control terminal. It is also connected to the main control chip U6B and mainly includes an infrared receiver head: the signal output end of this infrared receiver head is directly connected to the IR1 pin of the U6B, enabling bidirectional infrared signal processing. On one hand, it can receive control commands sent by an external infrared remote control, convert them into electrical signals, and transmit them to the main control chip U6B for parsing. On the other hand, under the control of the main control chip U6B, it can send infrared control signals to devices in the environmental control system that support infrared control (such as some air conditioner indoor units), compensating for the limitations of RS485 bus wiring and enabling the control terminal to adapt to more types of environmental control device interfaces.

[0029] The SHT20 temperature and humidity acquisition module, acting as an environmental condition sensing component, interacts with the main control chip U6B via the I2C communication protocol. The SDA pin (data signal line) of the SHT20 module is connected to the SHT20_SDA pin of the U6B, and the SCL pin (clock signal line) is connected to the SHT20_SCL pin. To ensure the stability of I2C communication, both the SHT20_SDA and SHT20_SCL pins are connected in series with a 10KΩ pull-up resistor to a 3V3 power supply, keeping the signal lines high in idle states to prevent data transmission errors caused by signal drift. During operation, the U6B triggers the SHT20 module to collect the current ambient temperature and humidity data by sending I2C commands. After collection, the module feeds the data back to the U6B via the SDA pin, where it is stored and displayed on the LCD screen, providing environmental data support for intelligent control of the environmental control system (such as automatically adjusting the air conditioning operating mode based on temperature and humidity).

[0030] The LCD screen module is the human-machine interface of the control terminal. It consists of a touch screen unit and an LCD backlight driver unit, which are connected to the main control chips U6B and U6A, respectively. The touch screen unit serves as the instruction input and data display component. Its TP_INT pin (interrupt signal), TP_SDA pin (I2C data pin), TP_SCL pin (I2C clock pin), and TP_REST pin (reset pin) are connected to the main control chip U6B, respectively. The corresponding pins are connected. When the user issues control commands via the touchscreen, the touchscreen unit generates an interrupt signal and notifies the main control chip U6B through the TP_INT pin. At the same time, the command data is transmitted to the main control chip U6B through the TP_SDA and TP_SCL pins. The environmental data (such as temperature and humidity), device status (such as air conditioner operation mode), and command execution results processed by the main control chip U6B are also transmitted to the touchscreen unit for display through the TP_SDA and TP_SCL pins. The LCD backlight driver unit is connected to the main control chip U6A. Its LEDA pin (backlight positive terminal) and LEDK pin (backlight negative terminal) are connected to the corresponding driver pins of the main control chip U6A, respectively. The LCD_VCC pin (backlight power input terminal) is connected to the power output terminal of the main control chip U6A. The main control chip U6A provides a stable backlight drive for the LCD screen by adjusting the output current and voltage, ensuring the display clarity of the touchscreen unit under different ambient light conditions, while avoiding backlight brightness fluctuations from affecting the user's viewing experience.

[0031] The buzzer module, serving as a sound feedback component, connects to the main control chip U6B to provide prompts for command execution results and abnormal statuses. It includes a buzzer, an NPN transistor, and a current-limiting resistor. The base of the NPN transistor is connected to the SPK-CTL pin of the main control chip U6B via the current-limiting resistor, the collector is directly connected to the power input of the buzzer, and the emitter is grounded. When the main control chip U6B determines that the command execution was successful (e.g., the environmental control system has started according to the command) or detects an abnormal status (e.g., communication interruption, abnormal power supply voltage), it outputs a high-level signal through the SPK-CTL pin. After the base current is limited by the current-limiting resistor, the NPN transistor is turned on, and the buzzer emits a sound at a preset frequency, helping users quickly obtain the terminal's operating status.

[0032] The power supply ESD protection module is a crucial protective component for ensuring the stable operation of the control terminal. It connects to the power supply terminals of the main control chips U6A and U6B, as well as various functional modules. It primarily consists of multiple ESD5Z3V3 bidirectional electrostatic protection diodes: these diodes are connected in parallel between the power supply terminal of the main control chip U6A and ground, between the WIFI_VCC power supply terminal (powering the wireless communication function of the main control chip U6B) and ground, between the DP signal terminal (USB data positive signal) and ground, and between the DN signal terminal (USB data negative signal) and ground. When external static electricity enters through the power supply or signal terminals, the ESD5Z3V3 diodes will rapidly conduct within nanoseconds, clamping the electrostatic voltage within a safe range and discharging the electrostatic current to ground. This prevents high-voltage static electricity from damaging the sensitive components of the main control chips U6A and U6B, as well as various functional modules, making it particularly suitable for complex industrial or home environmental control scenarios.

[0033] The RTC clock module connects to the main control chip U6B, providing time synchronization and timing control functions for the control terminal. It uses a high-precision 32.768KHz crystal oscillator: the two pins of this crystal oscillator are connected to the corresponding RTC pins (clock input and clock output) of the main control chip U6B, respectively. After the stable clock signal generated by the crystal oscillator is transmitted to the main control chip U6B, it is processed by the RTC unit inside the main control chip U6B to generate real-time time data. Based on this real-time time, the control terminal can realize timing control functions (such as starting the fresh air system at a preset time), and at the same time, it associates and stores time information with environmental data and equipment status data, which is convenient for subsequent tracking of the operation of the environmental control system at different time points. The choice of 32.768KHz crystal oscillator takes into account both clock accuracy and power consumption, ensuring that the time deviation of the terminal is small during long-term operation and does not consume too much power.

[0034] In addition, the control terminal also includes a storage chip U7, which is connected to the main control chip U6B to realize data storage function. The QSPI1_CS pin (chip select), QSPI1_IO0 pin (data input 0), QSPI1_IO1 pin (data output 0), QSPI1_IO2 pin (data input 1), QSPI1_IO3 pin (data output 1), and QSPI1_CLK pin (clock pin) of the storage chip U7 are respectively connected to the corresponding QSPI interface pins of the main control chip U6B. The QSPI interface enables high-speed data read and write. In addition to storing the running program of the control terminal, the storage chip U7 is also used to store the historical environmental temperature and humidity data processed by the main control chip U6B, the control command log of the environmental control equipment, terminal operating parameters and other information to avoid data loss. At the same time, it supports the main control chip U6B to call up historical data for analysis when needed, or to display historical data through the LCD screen module, providing users with reference for optimizing environmental control strategies.

[0035] In actual operation, the control terminal operates as follows: First, the power ESD protection module is always operational, providing electrostatic protection for all modules; the main control chip U6B initializes all connected modules, the RTC clock module begins providing real-time time, and the storage chip U7 is ready; when the user issues control commands through the voice input module, the dual microphones collect the voice signal and transmit it to the main control chip U6B. After parsing the command, and combining it with the current environmental data obtained by the SHT20 temperature and humidity acquisition module, the control command is sent to the environmental control system via the RS485 communication module or the infrared receiving module. After the environmental control system executes the command, it feeds back the execution result to the main control chip U6B. The main control chip U6B controls the touch screen unit of the LCD screen module to display the command execution result and the current environmental data, and controls the buzzer module to emit corresponding sound prompts. If the user issues a command through the touch screen unit, the process is similar to that of voice commands, only the command acquisition end is replaced by the touch screen unit. At the same time, the main control chip U6B will synchronously store the real-time time, environmental data, and command information to the storage chip U7, and the main control chip U6A will adjust the backlight brightness of the LCD screen according to the changes in ambient light (via the signal fed back by the main control chip U6B) to ensure the display effect.

[0036] Compared with existing technologies, this utility model effectively solves the shortcomings of the single control mode of traditional environmental control systems by integrating multiple modules such as voice input, dual communication channels, environmental acquisition, and human-machine feedback through a multi-functional main control chip (main control chip U6B core control + main control chip U6A backlight driver). It achieves diversified control modes, integrated functions, and stable operation, improves the applicability in various environmental control scenarios, and enhances the user's ease of operation and the level of system control intelligence.

[0037] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A control terminal for an environmental control system with AI voice interaction and multi-functional integration, characterized in that, include: The main control chip includes U6A and U6B, wherein the main control chip U6B is the core control unit and the main control chip U6A is the LCD backlight drive control unit; A voice input module, connected to the main control chip U6B, is used to collect voice commands and transmit them to the main control chip U6B; The RS485 communication module is connected to the main control chip U6B and is used to realize communication and interaction between the control terminal and the environmental control system through the RS485 bus. An infrared receiving module is connected to the main control chip U6B and is used to receive infrared commands or send infrared control signals to the environmental control system. It forms a dual communication channel with the RS485 communication module. The SHT20 temperature and humidity acquisition module is connected to the main control chip U6B and is used to collect ambient temperature and humidity data and feed it back to the main control chip U6B. The LCD screen module includes a touch screen unit and an LCD backlight driving unit. The touch screen unit is connected to the main control chip U6B and is used to call up and display environmental data, device status and command execution results, and supports the issuance of control commands via touch screen. The LCD backlight driving unit is connected to the main control chip U6A and is used to provide backlight driving for the LCD screen. The buzzer module is connected to the main control chip U6B and is used to provide audible feedback on instruction execution results and abnormal states. The power supply ESD protection module is connected to the power supply terminals of the main control chips U6A and U6B and each functional module respectively, and is used to resist electrostatic shock. The RTC clock module is connected to the main control chip U6B and is used to provide time synchronization and timing control functions.

2. The control terminal according to claim 1, characterized in that, The voice input module includes dual microphones MIC1 and MIC2 and a MICBIAS bias circuit. The signal output terminals of the dual microphones MIC1 and MIC2 are respectively connected to the MICP1 pin, MICP2 pin, MICN1 pin, and MICN2 pin of the main control chip U6B. The MICBIAS bias circuit is connected to the MICBIAS pin of the main control chip U6B to provide a working bias voltage for the microphones.

3. The control terminal according to claim 1, characterized in that, The RS485 communication module includes a 485_TX pin, a 485_RX pin, and a 485_EN control pin. The 485_TX pin, 485_RX pin, and 485_EN control pin are respectively connected to the corresponding pins of the main control chip U6B. The RS485 communication module A pin is connected to the RS485A signal terminal, and the RS485 communication module B pin is connected to the RS485B signal terminal.

4. The control terminal according to claim 1, characterized in that, The infrared receiving module includes an infrared receiver head, and the signal output terminal of the infrared receiver head is connected to the IR1 pin of the main control chip U6B.

5. The control terminal according to claim 1, characterized in that, The SHT20 temperature and humidity acquisition module is connected to the main control chip U6B via the I2C communication protocol. The SDA pin of the SHT20 temperature and humidity acquisition module is connected to the SHT20_SDA pin of the main control chip U6B, and the SCL pin of the SHT20 temperature and humidity acquisition module is connected to the SHT20_SCL pin of the main control chip U6B. Both the SHT20_SDA pin and the SHT20_SCL pin are connected in series with a 10KΩ pull-up resistor to a 3V3 power supply.

6. The control terminal according to claim 1, characterized in that, The TP_INT, TP_SDA, TP_SCL, and TP_REST pins of the touchscreen unit of the LCD screen module are respectively connected to the corresponding pins of the main control chip U6B; the LEDA and LEDK pins of the backlight driving unit of the LCD screen module are connected to the corresponding pins of the main control chip U6A; and the LCD_VCC pin of the backlight driving unit of the LCD screen module is connected to the output terminal of the main control chip U6A.

7. The control terminal according to claim 1, characterized in that, The buzzer module includes a buzzer, an NPN transistor, and a current-limiting resistor. The base of the NPN transistor is connected to the SPK-CTL pin of the main control chip U6B via the current-limiting resistor. The collector of the NPN transistor is connected to the buzzer, and the emitter of the NPN transistor is grounded.

8. The control terminal according to claim 1, characterized in that, The power supply ESD protection module includes multiple ESD5Z3V3 diodes, which are connected in parallel between the power supply terminal of the main control chip U6A, the WIFI_VCC power supply terminal, the DP signal terminal, the DN signal terminal of the main control chip U6B, and ground.

9. The control terminal according to claim 1, characterized in that, The RTC clock module uses a 32.768KHz crystal oscillator, and the two pins of the crystal oscillator are respectively connected to the corresponding RTC pins of the main control chip U6B.

10. The control terminal according to claim 1, characterized in that, It also includes a memory chip U7, whose QSPI1_CS, QSPI1_IO0, QSPI1_IO1, QSPI1_IO2, QSPI1_IO3, and QSPI1_CLK pins are respectively connected to the corresponding pins of the main control chip U6B to implement data storage function.

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