AI voice fan control circuit
Through the AI voice fan control circuit, the inconvenience of using traditional fan control methods is solved, long-distance voice control is realized, and user experience is improved.
Patent Information
- Application Number
- CN202422745053.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Traditional fan control methods have inconvenience in use through buttons or infrared remote control, especially for users with limited mobility, which leads to operational troubles.
The AI voice fan control circuit is adopted, and the voice command control fan functions are realized through the MCU main control chip, voice processing circuit and motor driving circuit, such as air volume, shaking head and light operation.
It realizes long-distance voice control without buttons or remote control, improving user experience, especially for users with limited mobility.
Smart Images
Figure CN223227547U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of voice fans, and in particular to an AI voice fan control circuit. Background Art
[0002] Traditional fan control methods are button control or infrared remote control. Button control requires the user to press buttons on the fan, and infrared remote control requires a separately equipped infrared remote control. The user experience needs to be improved. In addition, button control or control through infrared remote control have certain usage restrictions. If it is inconvenient for the user to press buttons or cannot reach the buttons, or cannot find the remote control, it will cause certain usage problems. Utility Model Content
[0003] The purpose of the present invention is to provide an AI voice fan control circuit to solve the problems mentioned in the background technology. To achieve the above purpose, the present invention provides the following technical solutions: an AI voice fan control circuit, including an MCU main control chip U3, the MCU main control chip U3 is connected to a charging circuit, a voice processing circuit and a motor drive circuit, the charging circuit is connected to a boost circuit, the voice processing circuit includes a voice chip U101, pin 4 of the voice chip U101 is connected to pin 6 of the MCU main control chip U3, pin 5 of the voice chip U101 is connected to one end of a capacitor C104, the other end of the capacitor C104 is connected to a resistor R5 and a MIC connector, the resistor R5 and the MIC connector are respectively connected to a battery and capacitor C4, pin 7 of the voice chip U101, the other end of the capacitor C4 is connected to the negative electrode of the battery, and pin 10 of the voice chip U101 is connected to a power amplifier circuit.
[0004] Preferably, the charging circuit includes a charging input interface, which is connected to pins 4 and 8 of the charging chip U1, pin 4 of the charging chip U1 is connected to resistor R1 and capacitor C1, the other end of the resistor R1 is connected to pin 13 of the MCU main control chip U3 and resistor R2, the other ends of the resistor R2 and capacitor C1 are both connected to the negative pole of the battery, pins 1 and pin 3 of the charging chip U1 are connected to the negative pole of the battery, pin 2 of the charging chip U1 is connected to one end of the resistor R3, pin 3 of the charging chip U1 is connected to capacitor C2 and the positive pole of the battery, and the other ends of the resistor R3 and capacitor C2 are connected to the negative pole of the battery.
[0005] Preferably, the boost circuit includes a diode D2, the positive electrode of the diode D2 is connected to pin 4 of the charging chip U1, the negative electrode of the diode D2 is connected to capacitor C9 and inductor L1, the capacitor C9 is connected to the negative electrode of the battery, the inductor L1 is connected to the collector of the transistor Q7 and the resistor R28, and the positive electrode of the diode D4, the emitter of the transistor Q7 is connected to the negative electrode of the battery, the base of the transistor Q7 is connected to resistor R26 and resistor R27, the resistor R26 is connected to pin 3 of the MCU main control chip U3, the resistor R27 is connected to the negative electrode of the battery, the resistor R28 is connected to pin 8 of the MCU main control chip U3 and resistor R29, the resistor R29 is connected to the negative electrode of the battery, the negative electrode of the diode D4 is connected to capacitor C11, capacitor C12 and the fan motor drive circuit, and the capacitor C11 and capacitor C12 are connected to the negative electrode of the battery.
[0006] Preferably, the motor drive circuit includes a capacitor C3, which is connected to a resistor R4 and a battery, and the other end of the capacitor C3 is connected to the negative electrode of the battery. The other end of the resistor R4 is connected to the power supply end of the four-phase stepper motor MOT1. The pulse signal output end of the four-phase stepper motor MOT1 is respectively connected to the drains of the MOS transistors Q1, Q2, Q3 and Q4. The gates of the MOS transistors Q1, Q2, Q3 and Q4 are respectively connected to pins 3, 5, 6 and 7 of the stepper motor pulse signal output chip U5. The sources of the MOS transistors Q1, Q2, Q3 and Q4 are all connected to the negative electrode of the battery. The gates of the MOS transistors Q1, Q2, Q3 and Q4 are respectively connected to resistors R8, R9, R10 and R11. The other ends of the resistors R8, R9, R10 and R11 are connected to the negative electrode of the battery.
[0007] Preferably, the fan motor drive circuit includes a resistor R30, which is connected to pin 2 of the MCU main control chip U3 and the resistor R32. The other end of the resistor R30 is connected to the resistor R31, the capacitor C13 and the gate of the MOS tube Q8. The source of the resistor R31, the capacitor C13 and the MOS tube Q8 are all connected to the negative electrode of the battery. The drain of the MOS tube Q8 is connected to the positive electrode of the fan MI, the capacitor C14 and the diode D5. The negative electrode of the fan MI, the capacitor C14 and the diode D5 is connected to the negative electrode of the diode D4.
[0008] Preferably, the power amplifier circuit includes a capacitor C10, which is connected to pin 10 of the voice chip U101, and the other end of the capacitor C10 is connected to a resistor R100, the other end of the resistor R100 is connected to the resistor R101 and pin 4 of the power amplifier chip U100, the resistor R101 is connected to pin 5 of the power amplifier chip U100, a speaker SPK is connected between pin 5 and pin 8 of the power amplifier chip U100, a capacitor C108 is connected between pin 6 and pin 7 of the power amplifier chip U100, pin 6 and pin 7 of the power amplifier chip U100 are respectively connected to the positive and negative poles of the battery, pin 2 of the power amplifier chip U100 is connected to pin 3, pin 3 of the power amplifier chip U100 is connected to capacitor C107, the other end of the capacitor C107 is connected to resistor R105 and the negative pole of the battery, and the other end of the resistor R105 is connected to pin 1 of the power amplifier chip U100 and pin 16 of the voice chip U101.
[0009] Preferably, pin 4 of the MCU main control chip U3 is connected to resistor R19, the resistor R19 is connected to the base of the transistor Q5, the collector of the transistor Q5 is connected to the speaker SPKⅠ, the speaker SPKⅠ is connected to the positive pole of the battery, and the emitter of the transistor Q5 is connected to the negative pole of the battery.
[0010] Preferably, pin 5 of the MCU main control chip U3 is connected to resistor R18 and capacitor C6, and the other ends of the resistor R18 and capacitor C6 are respectively connected to the positive electrode of the battery and the negative electrode of the battery, pin 1 of the MCU main control chip U3 is connected to resistor R17, and the resistor R17 is connected to the power-on indicator light LED1, and the power-on indicator light LED1 is connected to the negative electrode of the battery, pin 9 of the MCU main control chip U3 is connected to resistor R20, and the resistor R20 is connected to the moving head indicator light LED2, and pin 10 of the MCU main control chip U3 is connected to resistor R21, and the other end of the resistor R21 is connected to the background light LED3, and the moving head indicator light LED2 and the background light LED3 are connected to the negative electrode of the battery.
[0011] Preferably, pin 14 of the MCU main control chip U3 is connected to resistor R23, the resistor R23 is connected to resistor R24 and the base of transistor Q6, the emitter of the transistor Q6 is connected to resistor R24 and the positive electrode of diode D3, the negative electrode of diode D3 is connected to the negative electrode of diode D2, the collector of the transistor Q6 is connected to resistor R25, and the other end of the resistor R25 is connected to pin 7 of the voice chip U101.
[0012] Preferably, pin 1 of the stepper motor pulse signal output chip U5 is connected to pin 5 of the MCU main control chip U3, and pin 3 and pin 4 of the stepper motor pulse signal output chip U5 are respectively connected to pin 16 and pin 15 of the MCU main control chip U3.
[0013] Preferably, the MCU main control chip U3 model is NY8BM072A, the voice chip U101 model is US665P31, the charging chip U1 model is TC4056A, the power amplifier chip U100 model is 8002B, and the stepper motor pulse signal output chip U5 model is NY8A051F.
[0014] The technical effects and advantages of the utility model are as follows: after the power is turned on, the fan's air volume, shaking head, turning on and off the light and other functions can be controlled by voice commands through the control circuit, which is convenient and fast, and can be operated from a distance without pressing any buttons. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is the overall circuit diagram of the utility model. DETAILED DESCRIPTION
[0016] In order to make the technical means for realizing the present invention, the creative features, the purpose and the effect easily understood, the present invention is further explained below in conjunction with specific diagrams. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection or a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two components.
[0017] Example
[0018] like Figure 1The AI voice fan control circuit shown in the figure includes an MCU main control chip U3, the model of the MCU main control chip U3 is NY8BM072A, the MCU main control chip U3 is connected to the charging circuit, the voice processing circuit and the motor drive circuit, and controls the LED light, the shaking stepper motor, the fan motor, the buzzer, etc. through the output chip communication; wherein the voice processing circuit includes a voice chip U101, the model of the voice chip U101 is US665P31, the pin 4 of the voice chip U101 is connected to the pin 6 of the MCU main control chip U3, and the pin 5 of the voice chip U101 is connected to the circuit. One end of capacitor C104, the other end of capacitor C104 is connected to resistor R5 and MIC connector, resistor R5 and MIC connector are respectively connected to the battery and capacitor C4, pin 7 of voice chip U101, the other end of capacitor C4 is connected to the negative pole of the battery, pin 10 of voice chip U101 is connected to the power amplifier circuit, wherein the power amplifier circuit includes capacitor C10, capacitor C10 is connected to pin 10 of voice chip U101, the other end of capacitor C10 is connected to resistor R100, the other end of resistor R100 is connected to resistor R101 and pin 4 of power amplifier chip U100, power amplifier chip U1 00 model is 8002B, resistor R101 is connected to pin 5 of the power amplifier chip U100, speaker SPK is connected between pin 5 and pin 8 of the power amplifier chip U100, capacitor C108 is connected between pin 6 and pin 7 of the power amplifier chip U100, pin 6 and pin 7 of the power amplifier chip U100 are connected to the positive and negative poles of the battery respectively, pin 2 of the power amplifier chip U100 is connected to pin 3, pin 3 of the power amplifier chip U100 is connected to capacitor C107, the other end of capacitor C107 is connected to resistor R105 and the negative pole of the battery, resistor R10 Connect the other end to pin 1 of the power amplifier chip U100, which in turn connects to pin 16 of the voice chip U101. The MIC connector picks up the audio signal of the user's voice command and transmits it to the power amplifier chip U100 for processing. The chip system accurately recognizes the user's command and then communicates with the MCU main control chip U3, which then performs the corresponding operation. For example, if the user says "turn the fan on / off, fan speed 1 / 2 / 3, turn the fan head on / off, turn the light on / off," the fan will automatically perform the corresponding operation. Simultaneously with voice control, the chip system will also emit specific interactive voice commands. For example, if the voice command "wheat wheat" is used, the system will respond with "I am here."
[0019] The charging circuit includes a charging input interface, which is connected to pins 4 and 8 of the charging chip U1. The charging chip U1 model is TC4056A. Pin 4 of the charging chip U1 is connected to resistor R1 and capacitor C1. The other end of resistor R1 is connected to pin 13 of the MCU main control chip U3 and resistor R2. The other end of resistor R2 and capacitor C1 are both connected to the negative terminal of the battery. Pins 1 and 3 of the charging chip U1 are connected to the negative terminal of the battery. Pin 2 of the charging chip U1 is connected to one end of resistor R3. Pin 3 of the charging chip U1 is connected to capacitor C2 and the positive terminal of the battery. The other end of resistor R3 and capacitor C2 are connected to the negative terminal of the battery. Pins 1 and 3 of the charging chip U1 are the negative terminals of the chip. Pin 2 is the charging current adjustment pin. The charging current can be set by adjusting the resistance value of resistor R3. The maximum settable current is 1A. Pin 4 is the charging input interface. The charging input interface uses the USB power input terminal. Pin 8 is the chip enable terminal connected to USB+. Pin 7 is the charging indication pin, which is low level when charging and high level when fully charged.
[0020] The charging circuit is connected to the boost circuit, which includes a diode D2. The positive pole of the diode D2 is connected to pin 4 of the charging chip U1, the negative pole of the diode D2 is connected to the capacitor C9 and the inductor L1, the capacitor C9 is connected to the negative pole of the battery, the inductor L1 is connected to the collector of the transistor Q7 and the resistor R28, and the positive pole of the diode D4, the emitter of the transistor Q7 is connected to the negative pole of the battery, the base of the transistor Q7 is connected to the resistor R26 and the resistor R27, the resistor R26 is connected to pin 3 of the MCU main control chip U3, the resistor R27 is connected to the negative pole of the battery, the resistor R28 is connected to pin 8 of the MCU main control chip U3 and the resistor R29, the resistor R29 is connected to the negative pole of the battery, the negative pole of the diode D4 is connected to the capacitor C11, the capacitor C12 and the fan motor drive circuit, and the capacitor C11 and the capacitor C12 are connected to the negative pole of the battery; through this boost circuit, the battery voltage can be increased to 5V to power the shaking stepping motor.
[0021] The motor drive circuit includes a capacitor C3, which is connected to a resistor R4 and a battery. The other end of the capacitor C3 is connected to the negative electrode of the battery. The other end of the resistor R4 is connected to the power supply end of the four-phase stepper motor MOT1. The pulse signal output end of the four-phase stepper motor MOT1 is connected to the drain of the MOS transistor Q1, the MOS transistor Q2, the MOS transistor Q3 and the MOS transistor Q4 respectively. The gates of the MOS transistors Q1, Q2, Q3 and Q4 are connected to the pins 3, 5, 6 and 7 of the stepper motor pulse signal output chip U5 respectively. The gates of the MOS transistors Q1, Q2, Q3 and Q4 are connected to the pins 3, 5, 6 and 7 of the stepper motor pulse signal output chip U5 respectively. The source of the S transistor Q4 is connected to the negative electrode of the battery, and the gates of the MOS transistors Q1, Q2, Q3 and Q4 are connected to the resistors R8, R9, R10 and R11 respectively. The other ends of the resistors R8, R9, R10 and R11 are connected to the negative electrode of the battery. Pin 1 of the stepper motor pulse signal output chip U5 is connected to pin 5 of the MCU main control chip U3, and pins 3 and 4 of the stepper motor pulse signal output chip U5 are connected to pin 16 and pin 15 of the MCU main control chip U3 respectively. The model of the stepper motor pulse signal output chip U5 is NY8A051 F. In this motor drive circuit, MOT1 is the connection port of the four-phase stepper motor, where ports 1, 2, 3 and 4 are pulse signal output terminals, and port 5 is the power output terminal. The stepper motor pulse signal output chip U5 sequentially outputs 4 groups of pulse signals to control the rotation angle of the stepper motor. Pins 3, 5, 6, and 7 of the stepper motor pulse signal output chip U5 output pulse signals to MOS tubes Q1, Q2, Q3, and Q4 to control the rotation of the motor.
[0022] The fan motor drive circuit includes a resistor R30, which is connected to pin 2 of the MCU main control chip U3 and a resistor R32. The other end of the resistor R30 is connected to the resistor R31, the capacitor C13 and the gate of the MOS tube Q8. The source of the resistor R31, the capacitor C13 and the MOS tube Q8 are all connected to the negative electrode of the battery. The drain of the MOS tube Q8 is connected to the positive electrode of the fan MI, the capacitor C14 and the diode D5. The negative electrode of the fan MI, the capacitor C14 and the diode D5 is connected to the negative electrode of the diode D4. The MOS tube Q8 is a motor drive MOS tube. Pin 2 of the MCU main control chip U3 is a pulse signal output. The gear adjustment function (1st gear, 2nd gear, 3rd gear) is achieved by outputting 3 different PWM duty cycles to control the speed of the fan MI.
[0023] Pin 4 of the MCU main control chip U3 is connected to resistor R19, resistor R19 is connected to the base of transistor Q5, the collector of the transistor Q5 is connected to the speaker SPKⅠ, the speaker SPKⅠ is connected to the positive pole of the battery, and the emitter of the transistor Q5 is connected to the negative pole of the battery; transistor Q5 is a driving transistor. When the touch button is pressed, pin 4 of the MCU main control chip U3 outputs a pulse signal and the transistor Q5 works to drive the buzzer to emit a "beep" sound.
[0024] Among them, pin 5 of the MCU main control chip U3 is connected to resistor R18 and capacitor C6, and the other ends of resistor R18 and capacitor C6 are connected to the positive electrode and negative electrode of the battery respectively. Pin 1 of the MCU main control chip U3 is connected to resistor R17, resistor R17 is connected to the power-on indicator light LED1, and the power-on indicator light LED1 is connected to the negative electrode of the battery. Pin 9 of the MCU main control chip U3 is connected to resistor R20, and resistor R20 is connected to the moving head indicator light LED2. Pin 10 of the MCU main control chip U3 is connected to resistor R21, and the other end of resistor R21 is connected to the background light LED3, and the moving head indicator light LED2 and the background light LED3 are connected to the negative electrode of the battery. The MCU main control chip U3 can control the on and off of various lights, thereby indicating the status of the fan.
[0025] Pin 14 of the MCU main control chip U3 is connected to resistor R23, resistor R23 is connected to resistor R24 and the base of transistor Q6, the emitter of transistor Q6 is connected to resistor R24 and the positive electrode of diode D3, the negative electrode of diode D3 is connected to the negative electrode of diode D2, the collector of transistor Q6 is connected to resistor R25, and the other end of resistor R25 is connected to pin 7 of the voice chip U101; this circuit structure can provide power for the operation of voice chip U101.
[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An AI voice fan control circuit, including an MCU main control chip U3, characterized by: The MCU main control chip U3 is connected to the charging circuit, the voice processing circuit and the motor drive circuit. The charging circuit is connected to the boost circuit. The voice processing circuit includes a voice chip U101. Pin 4 of the voice chip U101 is connected to pin 6 of the MCU main control chip U3. Pin 5 of the voice chip U101 is connected to one end of the capacitor C104. The other end of the capacitor C104 is connected to the resistor R5 and the MIC connector. The resistor R5 and the MIC connector are respectively connected to the battery and the capacitor C4, and pin 7 of the voice chip U101. The other end of the capacitor C4 is connected to the negative pole of the battery. Pin 10 of the voice chip U101 is connected to the power amplifier circuit.
2. The AI voice fan control circuit according to claim 1, characterized in that: The charging circuit includes a charging input interface, which is connected to pins 4 and 8 of the charging chip U1. Pin 4 of the charging chip U1 is connected to resistor R1 and capacitor C1. The other end of the resistor R1 is connected to pin 13 of the MCU main control chip U3 and resistor R2. The other ends of the resistor R2 and capacitor C1 are both connected to the negative pole of the battery. Pins 1 and 3 of the charging chip U1 are connected to the negative pole of the battery. Pin 2 of the charging chip U1 is connected to one end of the resistor R3. Pin 3 of the charging chip U1 is connected to capacitor C2 and the positive pole of the battery. The other ends of the resistor R3 and capacitor C2 are connected to the negative pole of the battery.
3. The AI voice fan control circuit according to claim 2, characterized in that: The boost circuit includes a diode D2, the positive electrode of the diode D2 is connected to pin 4 of the charging chip U1, the negative electrode of the diode D2 is connected to the capacitor C9 and the inductor L1, the capacitor C9 is connected to the negative electrode of the battery, the inductor L1 is connected to the collector of the transistor Q7 and the resistor R28, and the positive electrode of the diode D4, the emitter of the transistor Q7 is connected to the negative electrode of the battery, the base of the transistor Q7 is connected to the resistor R26 and the resistor R27, the resistor R26 is connected to pin 3 of the MCU main control chip U3, the resistor R27 is connected to the negative electrode of the battery, the resistor R28 is connected to pin 8 of the MCU main control chip U3 and the resistor R29, the resistor R29 is connected to the negative electrode of the battery, the negative electrode of the diode D4 is connected to the capacitor C11, the capacitor C12 and the fan motor drive circuit, and the capacitor C11 and the capacitor C12 are connected to the negative electrode of the battery.
4. The AI voice fan control circuit according to claim 3, characterized in that: The motor drive circuit includes a capacitor C3, which is connected to a resistor R4 and a battery. The other end of the capacitor C3 is connected to the negative electrode of the battery. The other end of the resistor R4 is connected to the power supply end of the four-phase stepper motor MOT1. The pulse signal output end of the four-phase stepper motor MOT1 is respectively connected to the drains of MOS transistors Q1, MOS transistors Q2, MOS transistors Q3, and MOS transistors Q4. The gates of the MOS transistors Q1, MOS transistors Q2, MOS transistors Q3, and MOS transistors Q4 are respectively connected to pins 3, 5, 6, and 7 of the stepper motor pulse signal output chip U5. The sources of the MOS transistors Q1, MOS transistors Q2, MOS transistors Q3, and MOS transistors Q4 are all connected to the negative electrode of the battery. The gates of the MOS transistors Q1, MOS transistors Q2, MOS transistors Q3, and MOS transistors Q4 are respectively connected to resistors R8, R9, R10, and R11. The other ends of the resistors R8, R9, R10, and R11 are connected to the negative electrode of the battery.
5. The AI voice fan control circuit according to claim 4, characterized in that: The fan motor drive circuit includes a resistor R30, which is connected to pin 2 of the MCU main control chip U3 and a resistor R32. The other end of the resistor R30 is connected to a resistor R31, a capacitor C13, and the gate of the MOS tube Q8. The source of the resistor R31, the capacitor C13, and the MOS tube Q8 are all connected to the negative electrode of the battery. The drain of the MOS tube Q8 is connected to the positive electrode of the fan MI, the capacitor C14, and the diode D5. The negative electrode of the fan MI, the capacitor C14, and the diode D5 is connected to the negative electrode of the diode D4.
6. The AI voice fan control circuit according to claim 5, characterized in that: The power amplifier circuit includes a capacitor C10, which is connected to pin 10 of the voice chip U101. The other end of the capacitor C10 is connected to a resistor R100. The other end of the resistor R100 is connected to the resistor R101 and pin 4 of the power amplifier chip U100. The resistor R101 is connected to pin 5 of the power amplifier chip U100. A speaker SPK is connected between pin 5 and pin 8 of the power amplifier chip U100. A capacitor C108 is connected between pin 6 and pin 7 of the power amplifier chip U100. Pin 6 and pin 7 of the power amplifier chip U100 are respectively connected to the positive and negative poles of the battery. Pin 2 of the power amplifier chip U100 is connected to pin 3. Pin 3 of the power amplifier chip U100 is connected to capacitor C107. The other end of the capacitor C107 is connected to resistor R105 and the negative pole of the battery. The other end of the resistor R105 is connected to pin 1 of the power amplifier chip U100 and pin 16 of the voice chip U101.
7. The AI voice fan control circuit according to claim 6, characterized in that: Pin 4 of the MCU main control chip U3 is connected to resistor R19, the resistor R19 is connected to the base of the transistor Q5, the collector of the transistor Q5 is connected to the speaker SPKⅠ, the speaker SPKⅠ is connected to the positive electrode of the battery, and the emitter of the transistor Q5 is connected to the negative electrode of the battery.
8. The AI voice fan control circuit according to claim 7, characterized in that: Pin 5 of the MCU main control chip U3 is connected to resistor R18 and capacitor C6, and the other ends of the resistor R18 and capacitor C6 are connected to the positive electrode and the negative electrode of the battery respectively. Pin 1 of the MCU main control chip U3 is connected to resistor R17, and the resistor R17 is connected to the power-on indicator light LED1, and the power-on indicator light LED1 is connected to the negative electrode of the battery. Pin 9 of the MCU main control chip U3 is connected to resistor R20, and the resistor R20 is connected to the moving head indicator light LED2. Pin 10 of the MCU main control chip U3 is connected to resistor R21, and the other end of the resistor R21 is connected to the background light LED3, and the moving head indicator light LED2 and the background light LED3 are connected to the negative electrode of the battery.
9. The AI voice fan control circuit according to claim 8, characterized in that: Pin 14 of the MCU main control chip U3 is connected to resistor R23, the resistor R23 is connected to resistor R24 and the base of transistor Q6, the emitter of the transistor Q6 is connected to resistor R24 and the positive electrode of diode D3, the negative electrode of diode D3 is connected to the negative electrode of diode D2, the collector of the transistor Q6 is connected to resistor R25, and the other end of the resistor R25 is connected to pin 7 of the voice chip U101.
10. The AI voice fan control circuit according to claim 9, characterized in that: Pin 1 of the stepper motor pulse signal output chip U5 is connected to pin 5 of the MCU main control chip U3, and pin 3 and pin 4 of the stepper motor pulse signal output chip U5 are connected to pin 16 and pin 15 of the MCU main control chip U3 respectively.