Fan lamp circuit of two-wire DC power supply loading signal

Abstract

The utility model discloses a two-wire type DC power supply loading signal fan lamp circuit which comprises a switching power supply module, and the output end of the switching power supply module is connected with a control instruction input module which is used for outputting direct current and controlling the on-off of the direct current and inputting a control instruction on-off waveform. The output end of the control instruction input module is connected with a direct current input and control signal conversion module which is used for inputting direct current and converting a control instruction on-off waveform into a control signal; the DC input and control signal conversion module is connected with an MCU control module for outputting a control signal according to the DC input and control signal conversion module, and a voltage reduction module for supplying power to the MCU control module, and a normal power-on mode is recovered after DC power supply is quickly switched on and off for N times in a non-equivalent mode; waveforms of different on-off signals are loaded on the two DC power supply output lines and sent to the MCU control module, and the MCU control module controls the LED lamp or the fan to work according to the waveform signals of the different on-off signals.

Description

[Technical Field]

[0001] This utility model relates to a fan light circuit with a two-wire DC power supply signal. [Background Technology]

[0002] Existing fan light control methods mainly rely on remote control, such as RF wireless transmission or WIFI modules. However, these methods are costly and prone to signal interference. [Utility Model Content]

[0003] This invention overcomes the shortcomings of the prior art and provides a fan light circuit with a two-wire DC power supply signal.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fan-light circuit with a two-wire DC power supply and a signal loading capability is characterized by comprising: a switching power supply module connected to the mains power supply to convert AC power to DC power; a control command input module connected to the output terminal of the switching power supply module for outputting DC power and controlling the on / off waveform of the DC power input; a DC power input and control signal conversion module connected to the output terminal of the control command input module for inputting DC power and converting the on / off waveform of the control command into a control signal; an MCU control module connected to the DC power input and control signal conversion module for outputting fan control signals and LED light control signals based on the DC power input and control signal conversion module; and a step-down module for stepping down the output power supply to supply power to the MCU control module.

[0006] The fan light circuit with a two-wire DC power supply signal as described above is characterized in that: the control command input module includes a power-on / off control chip U7 for controlling the power-on and power-off duration according to remote control commands or button commands, and a connection terminal DC connected to the DC power input and control signal conversion module. OUT1, pin 1 of the power-on / off control chip U7 is connected to the switching power supply module, one end of resistor R80, one end of resistor R79, and one end of capacitor C41. The other end of resistor R80 is connected to the 5V power supply. The other ends of resistor R79 and capacitor C41 are grounded. Pin 3 of the power-on / off control chip U7 is connected to one end of button K1, and the other end of button K1 is grounded. Pin 4 of the power-on / off control chip U7 is connected to one end of button K2, and the other end of button K2 is grounded. Pin 5 of the power-on / off control chip U7 is connected to one end of capacitor C1, one end of resistor R7, and the base of transistor Q2 through resistor R4. The collector of transistor Q2 is connected to one end of resistor R2 and the gate of MOSFET Q1 through resistor R3. The source of MOSFET Q1 is connected to the switching power supply module. The drain of MOSFET Q1 is connected to the DC terminal OUT1 pin 1. The other end of capacitor C1, the other end of resistor R7, the emitter of transistor Q2, and the DC terminal are also connected. Pin 2 of OUT1 is grounded; pin 8 of power-on / off control chip U7 is grounded; pin 1 of buck chip U6 is connected to the switching power supply module, one end of capacitor C36, and the positive terminal of electrolytic capacitor EC8; pin 2 of buck chip U6, the other end of capacitor C36, and the other end of electrolytic capacitor EC8 are grounded; pin 5 of buck chip U6 is connected to one end of inductor L4; the other end of inductor L4 is connected to pin 4 of buck chip U6, one end of capacitor C35, one end of capacitor EC10, and DC input and control signal conversion module; the other ends of capacitor C35 and capacitor EC10 are grounded; the other end of inductor L4 outputs 5V power.

[0007] The fan light circuit with a two-wire DC power supply signal as described above is characterized in that: pin 2 of the power on / off control chip U7 is connected to one end of capacitor C38 and one end of resistor R78 respectively; the other end of resistor R78 is connected to pin 1 of wireless chip RF1 respectively; pin 3 of wireless chip RF1 is connected to one end of resistor R77, the positive terminal of electrolytic capacitor EC9, one end of capacitor C37, and one end of capacitor C40 respectively; the other end of resistor R77 is connected to a 5V power supply; and the other ends of capacitor C38, capacitor C39, pin 2 of wireless chip RF1, the negative terminal of electrolytic capacitor RC9, the other end of capacitor C37, and the other end of capacitor C40 are grounded respectively.

[0008] The fan light circuit with a two-wire DC power supply loading signal as described above is characterized in that: the control command input module includes a push-button switch K3, one end of which is connected to the power output terminal of the switching power supply module, and the other end of which is connected to the DC input and control signal conversion module; pin 1 of the step-down chip U6 is connected to the switching power supply module, one end of capacitor C36, and the positive terminal of electrolytic capacitor EC8 respectively; pin 2 of the step-down chip U6, the other end of capacitor C36, and the other end of electrolytic capacitor EC8 are grounded respectively; pin 5 of the step-down chip U6 is connected to one end of inductor L4; the other end of inductor L4 is connected to pin 4 of the step-down chip U6, one end of capacitor C35, one end of capacitor EC10, and the DC input and control signal conversion module respectively; the other ends of capacitor C35 and capacitor EC10 are grounded respectively; and the other end of inductor L4 outputs 5V power.

[0009] The fan light circuit with a two-wire DC power supply signal as described above is characterized in that: the DC input and control signal conversion module includes a transistor Q3 and a connection terminal DC IN1 connected to the control command input module. The collector of transistor Q3 is connected to one end of resistor R5 and one end of resistor R8. The other end of resistor R5 is connected to the control command input module. The other end of resistor R8 is connected to one end of resistor R9, one end of capacitor C2, and the MCU control module. The other end of resistor R9, the other end of capacitor C2, and the emitter of transistor Q3 are grounded. The base of transistor Q3 is connected to one end of resistor R1 and one end of resistor R6 through one end of resistor R10. The other end of resistor R1 is connected to the positive terminal of diode D1 and one end of fuse F1. The negative terminal of diode D1 is connected to the positive terminal of electrolytic capacitor EC1. The negative terminal of electrolytic capacitor EC1 and the other end of resistor R6 are grounded. The other end of fuse F1 is connected to pin 1 of connection terminal DC IN1. The other end of connection terminal DC IN1 is grounded. The negative terminal of diode D1 outputs VDD power supply.

[0010] The fan light circuit with a two-wire DC power supply signal as described above is characterized in that: the step-down module includes a step-down chip U1, pin 1 of the step-down chip U1 is connected to the DC input and control signal conversion module, one end of capacitor C11, and the positive terminal of electrolytic capacitor EC6 respectively, the negative terminal of electrolytic capacitor EC6, the other end of capacitor C11, and pin 2 of step-down chip U1 are grounded respectively, pin 5 of step-down chip U1 is connected to one end of inductor L3, the other end of inductor L3 is connected to pin 4 of step-down chip U1 and one end of capacitor EC7 respectively, the other end of inductor EC7 is grounded, and the other end of inductor L3 is connected to the MCU control module for power supply.

[0011] The fan-light circuit with a two-wire DC power supply signal as described above is characterized in that: the MCU control module is connected to a fan drive module for driving the fan and an LED drive module for driving the LED light; the DC input and control signal conversion module is connected to the fan drive module and the LED drive module for power supply respectively; and the step-down module is connected to the LED drive module for power supply.

[0012] The fan light circuit with a two-wire DC power supply for receiving signals, as described above, is characterized in that: the MCU control module is connected to an RF receiving module for receiving wireless remote control signals, and the step-down module is connected to the RF receiving module for power supply; the MCU control module is connected to a WIFI communication module for receiving wireless remote control signals, and the step-down module is connected to the WIFI communication module for power supply.

[0013] The fan light circuit with a two-wire DC power supply loading signal as described above is characterized in that: the MCU control module is connected to a buzzer module for sound prompts and a programming module for programming; and the DC power input and control signal conversion module is connected to the buzzer module.

[0014] The fan light circuit with a two-wire DC power supply signal as described above is characterized in that: the MCU control module includes a control chip U4, pin 1 of the control chip U4 is grounded, pins 2-3, 7-8, 11-12, 16-17, and 27-32 of the control chip U4 are respectively connected to the fan drive module, pin 4 of the control chip U4 is respectively connected to one end of resistor R47 and one end of capacitor C25, pin 5 of the control chip U4 is grounded, and pin 6 of the control chip U4 is respectively connected to one end of capacitor C20, one end of capacitor C19, the other end of resistor R47, one end of resistor R41, and resistor R48. One end is connected to the ground, the other ends of capacitors C20, C19, and C25 are grounded respectively, the other end of resistor R41 is connected to the step-down module, the other end of resistor R48 is connected to the positive terminal of indicator light LD1, the other end of indicator light LD1 is grounded, pins 9-10 of control chip U4 are connected to the LED driver module respectively, pin 14 of control chip U4 is connected to pin 4 of connection terminal CN, pin 15 of control chip U4 is connected to pin 6 of connection terminal CN, pins 1-2 of connection terminal CN are connected to the step-down module respectively, and pins 3 and 5 of connection terminal CN are connected to the WIFI communication module and the programming module respectively. Pin 8 of the CN terminal is grounded. Pin 9 of the CN terminal is connected to the RF receiving module and the WIFI communication module respectively. Pin 18 of the control chip U4 is connected to one end of capacitor C26, one end of resistor R46, and one end of resistor R49 respectively. The other end of capacitor C26 and the other end of resistor R49 are both extremely low. The other end of resistor R46 is connected to the fan drive module. Pin 19 of the control chip U4 is connected to the DC input and control signal conversion module. Pin 20 of the control chip U4 is connected to the RF receiving module. Pin 21 of the control chip U4 is connected to pin 3 of the CN2 terminal. Pin 22 of the control chip U4 is connected to... Connect to pin 5 of connector CN2 and buzzer module. Connect pin 23 of control chip U4 to LED driver module. Connect pin 24 of control chip U4 to ground via capacitor C18. Connect pin 25 of control chip U4 to one end of resistor R34 and one end of capacitor C17 respectively. Connect the other end of capacitor C17 to ground. Connect the other end of resistor R34 to pin 26 of control chip U4, pin 1 of buck chip U2, and one end of resistor RJ1 respectively. Connect pin 3 of buck chip U2 to the other end of resistor RJ1, switching power supply module, and one end of capacitor C14 respectively. Connect the other end of capacitor C14 and pin 2 of buck chip U2 to ground.

[0015] The beneficial effects of this utility model are:

[0016] This invention features a control command input module that controls the on / off waveform of DC power supply. Utilizing a dual-line DC power supply, it rapidly switches the DC power supply on and off N times in an unequal manner to restore normal power supply, providing sufficient power to the MCU control module. Simultaneously, the waveforms of different on / off signals are loaded onto the two DC power supply output lines and sent to the MCU control module. The MCU control module controls the LED lights to turn on / off, dim or adjust color, and controls the load fan motor to adjust speed, time, or reverse rotation based on the waveform signals of different on / off signals. This eliminates the need for a remote control, avoiding remote control signal interference and reducing costs. [Image Description]

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a circuit diagram of the control command input module, switching power supply module, DC input and control signal conversion module of this utility model (Embodiment 1).

[0019] Figure 3 This is a circuit diagram of the control command input module, switching power supply module, DC input and control signal conversion module of the present invention, according to Embodiment 2.

[0020] Figure 4 This is a partial circuit diagram of the present invention. [Detailed Implementation]

[0021] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0023] like Figure 1As shown, a fan-light circuit with a two-wire DC power supply for loading signals includes a switching power supply module 1 that is connected to the mains power supply to convert AC power to DC power. The output terminal of the switching power supply module 1 is connected to a control command input module 2 for outputting DC power and controlling the on / off waveform of the DC power input control command. The output terminal of the control command input module 2 is connected to a DC power input and control signal conversion module 3 for inputting DC power and converting the on / off waveform of the control command into a control signal. The DC power input and control signal conversion module 3 is connected to an MCU control module 4 that outputs fan control signals and LED light control signals according to the DC power input and control signal conversion module 3. A step-down module 5 is also connected to step down the output power supply and supply power to the MCU control module 4. When controlling the fan or LED light, the DC power supply can be switched on and off via the control command input module 2. This causes the control command input module 2 to generate unpredictable control command on / off waveforms. The DC power input and control signal conversion module 3 converts these unpredictable waveforms into unpredictable on / off signals and sends them to the MCU control module 4. The MCU control module 4 then controls the fan or LED light based on these unpredictable on / off signals. This signal loading method, using two DC power supply lines, and rapidly switching the DC power supply on and off in an unequal manner, ensures sufficient power supply to the MCU control module 4 while reliably transmitting and converting the unpredictable on / off signals to it. This allows the MCU control module 4 to issue different control commands based on different equal on / off signals, further controlling the DC fan and light operation. This eliminates the need for a remote control, simplifying the fan and light circuit control, reducing costs, and avoiding signal interference.

[0024] like Figure 1 As shown, the MCU control module 4 is connected to a fan driver module 6 for driving the fan and an LED driver module 7 for driving the LEDs. A DC power input and control signal conversion module 3 is connected to both the fan driver module 6 and the LED driver module 7 for power supply. A step-down module 5 is also connected to the LED driver module 7 for power supply. After receiving an unpredictable on / off control command waveform, the MCU control module 4 controls the fan to operate via the fan driver module 6 or the LED driver module 7 to operate based on this waveform signal.

[0025] like Figure 1 As shown, the MCU control module 4 is connected to an RF receiver module 8 for receiving wireless remote control signals, and the step-down module 5 is connected to the RF receiver module 8 for power supply; the MCU control module 4 is also connected to a WIFI communication module 9 for receiving wireless remote control signals, and the step-down module 5 is connected to the WIFI communication module 9 for power supply. This invention can also be configured with wireless remote control functionality as needed.

[0026] like Figure 1As shown, the MCU control module 4 is connected to a buzzer module 10 for sound prompts and a programming module 11 for programming. The DC power input and control signal conversion module 3 is connected to the buzzer module 10. When the fan light executes the corresponding command, a sound prompt is given through the buzzer module 10.

[0027] like Figure 2 As shown, the first embodiment of the control command input module 2 includes a power on / off control chip U7 for controlling the power on and off duration according to remote control commands or button commands, and a connection terminal DC connected to the DC input and control signal conversion module 3. OUT1, pin 1 of the power-on / off control chip U7 is connected to the switching power supply module 1, one end of resistor R80, one end of resistor R79, and one end of capacitor C41. The other end of resistor R80 is connected to the 5V power supply. The other ends of resistor R79 and capacitor C41 are grounded. Pin 3 of the power-on / off control chip U7 is connected to one end of button K1, and the other end of button K1 is grounded. Pin 4 of the power-on / off control chip U7 is connected to one end of button K2, and the other end of button K2 is grounded. Pin 5 of the power-on / off control chip U7 is connected to one end of capacitor C1, one end of resistor R7, and the base of transistor Q2 through resistor R4. The collector of transistor Q2 is connected to one end of resistor R2 and the gate of MOSFET Q1 through resistor R3. The source of MOSFET Q1 is connected to the switching power supply module 1. The drain of MOSFET Q1 is connected to the DC terminal pin 1. The other end of capacitor C1, the other end of resistor R7, the emitter of transistor Q2, and the DC terminal are also connected. Pin 2 of OUT1 is grounded; pin 8 of the power-on / off control chip U7 is grounded; pin 1 of the buck chip U6 is connected to the switching power supply module 1, one end of capacitor C36, and the positive terminal of electrolytic capacitor EC8; pin 2 of the buck chip U6, the other end of capacitor C36, and the other end of electrolytic capacitor EC8 are grounded; pin 5 of the buck chip U6 is connected to one end of inductor L4; the other end of inductor L4 is connected to pin 4 of the buck chip U6, one end of capacitor C35, one end of capacitor EC10, and DC input and control signal conversion module 3; the other ends of capacitor C35 and EC10 are grounded; the other end of inductor L4 outputs 5V power. When adjusting the fan or LED light, control commands are sent to the power-on / off control chip U7 by pressing buttons K1 and K2. The power-on / off control chip U7 controls transistor Q2 to turn on or off according to the control commands, causing MOSFET Q1 to turn on or off, thereby sending an unpredictable on / off control command waveform to the DC input and control signal conversion module 3.

[0028] like Figure 2As shown, pin 2 of the power-on / off control chip U7 is connected to one end of capacitor C38 and one end of resistor R78, respectively. The other end of resistor R78 is connected to pin 1 of wireless chip RF1. Pin 3 of wireless chip RF1 is connected to one end of resistor R77, the positive terminal of electrolytic capacitor EC9, one end of capacitor C37, and one end of capacitor C40, respectively. The other end of resistor R77 is connected to a 5V power supply. The other ends of capacitors C38 and C39, the negative terminal of electrolytic capacitor RC9 at pin 2 of wireless chip RF1, the other end of capacitor C37, and the other end of capacitor C40 are grounded. This design can also incorporate a wireless remote control function on the control command input module 2 according to actual usage requirements. After the power-on / off control chip U7 receives the wireless remote control function, it controls transistor Q2 to turn on or off, causing MOSFET Q1 to turn on or off, thereby sending an unpredictable power-on / off control command waveform to the DC input and control signal conversion module 3.

[0029] like Figure 3 As shown, the control command input module 2 in Embodiment 2 includes a push-button switch K3. One end of the push-button switch K3 is connected to the power output terminal of the switching power supply module 1, and the other end is connected to the DC input and control signal conversion module 3. Pin 1 of the step-down chip U6 is connected to the switching power supply module 1, one end of capacitor C36, and the positive terminal of electrolytic capacitor EC8. Pin 2 of the step-down chip U6, the other end of capacitor C36, and the other end of electrolytic capacitor EC8 are grounded. Pin 5 of the step-down chip U6 is connected to one end of inductor L4. The other end of inductor L4 is connected to pin 4 of the step-down chip U6, one end of capacitor C35, one end of capacitor EC10, and the DC input and control signal conversion module 3. The other ends of capacitor C35 and capacitor EC10 are grounded. The other end of inductor L4 outputs 5V power. When it is necessary to adjust the fan or LED light, the power is turned on or off by pressing the push-button switch K3, sending an unpredictable on / off control command waveform to the DC input and control signal conversion module 3.

[0030] like Figure 4 As shown, the control chip U4 in the MCU control module 4 controls the fan drive module 6 or the LED light drive module 7 to operate based on the received on / off signals of uncertain values. Specifically, the motor drive chips M4-M6 in the fan drive module 6 drive the DC motor to achieve speed regulation, timing, or forward / reverse operation; the control chip U3 in the LED light drive module 7 controls the LED light to achieve on / off operation, dimming, or color adjustment.

[0031] like Figure 4As shown, after setting the wireless remote control function, a remote control signal can be sent to the RF receiving module 8 via the remote control, and then sent to the control chip U4 in the MCU control module 4; a control signal can also be sent to the WIFI chip U5 in the WIFI communication module 9 via a mobile phone or other smart device, and then sent to the control chip U4 in the MCU control module 4; when the fan light executes the command, the MCU control module 4 controls the transistor Q6 in the buzzer module 10 to conduct, so that the buzzer BZ1 works to provide an audible prompt; when a program needs to be burned, it is connected to the connection terminal CN1 of the burning module 11 to burn the program to the control chip U4 in the MCU control module 4.

[0032] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A fan light circuit with a two-wire DC power supply and a loaded signal, characterized in that: It includes a switching power supply module (1) that is connected to the mains power to convert AC power to DC power, a control command input module (2) that is connected to the output terminal of the switching power supply module (1) for outputting DC power and controlling the DC power on / off input control command waveform, a DC power input and control signal conversion module (3) that is connected to the output terminal of the control command input module (2) for inputting DC power and converting the control command on / off waveform into control signals, an MCU control module (4) that outputs fan control signals and LED light control signals according to the DC power input and control signal conversion module (3), and a step-down module (5) for stepping down the output power to supply power to the MCU control module (4).

2. The fan light circuit with a two-wire DC power supply loading signal according to claim 1, characterized in that: The control command input module (2) includes a power on / off control chip U7 for controlling the power on and off duration according to remote control commands or button commands, and a connection terminal DC for connecting to the DC input and control signal conversion module (3). OUT1, pin 1 of the power-on / off control chip U7 is connected to the switching power supply module (1), one end of resistor R80, one end of resistor R79, and one end of capacitor C41 respectively. The other end of resistor R80 is connected to the 5V power supply. The other ends of resistor R79 and capacitor C41 are grounded respectively. Pin 3 of the power-on / off control chip U7 is connected to one end of button K1. The other end of button K1 is grounded. Pin 4 of the power-on / off control chip U7 is connected to one end of button K2. The other end of button K2 is grounded. Pin 5 of the power-on / off control chip U7 is connected to one end of capacitor C1, one end of resistor R7, and the base of transistor Q2 through resistor R4 respectively. The collector of transistor Q2 is connected to one end of resistor R2 and the gate of MOSFET Q1 through resistor R3 respectively. The source of MOSFET Q1 is connected to the switching power supply module (1). The drain of MOSFET Q1 is connected to the connection terminal DC pin 1. The other end of capacitor C1, the other end of resistor R7, the emitter of transistor Q2, and the connection terminal DC are connected. OUT1 pin 2 is grounded; power on / off control chip U7 pin 8 is grounded; buck chip U6 pin 1 is connected to the switching power supply module (1), one end of capacitor C36, and the positive terminal of electrolytic capacitor EC8 respectively; buck chip U6 pin 2, the other end of capacitor C36, and the other end of electrolytic capacitor EC8 are grounded respectively; buck chip U6 pin 5 is connected to one end of inductor L4; the other end of inductor L4 is connected to buck chip U6 pin 4, one end of capacitor C35, one end of capacitor EC10, and DC input and control signal conversion module (3) respectively; the other end of capacitor C35 and the other end of capacitor EC10 are grounded respectively; the other end of inductor L4 outputs 5V power.

3. The fan light circuit with a two-wire DC power supply loading signal according to claim 2, characterized in that: Pin 2 of the power-on / off control chip U7 is connected to one end of capacitor C38 and one end of resistor R78. The other end of resistor R78 is connected to pin 1 of wireless chip RF1. Pin 3 of wireless chip RF1 is connected to one end of resistor R77, the positive terminal of electrolytic capacitor EC9, one end of capacitor C37, and one end of capacitor C40. The other end of resistor R77 is connected to a 5V power supply. The other ends of capacitor C38, capacitor C39, pin 2 of wireless chip RF1, the negative terminal of electrolytic capacitor RC9, the other end of capacitor C37, and the other end of capacitor C40 are grounded.

4. The fan light circuit with a two-wire DC power supply loading signal according to claim 1, characterized in that: The control command input module (2) includes a push button switch K3. One end of the push button switch K3 is connected to the power output terminal of the switching power supply module (1), and the other end of the push button switch K3 is connected to the DC input and control signal conversion module (3). The pin 1 of the step-down chip U6 is connected to the switching power supply module (1), one end of capacitor C36, and the positive terminal of electrolytic capacitor EC8. The pin 2 of the step-down chip U6, the other end of capacitor C36, and the other end of electrolytic capacitor EC8 are grounded. The pin 5 of the step-down chip U6 is connected to one end of inductor L4. The other end of inductor L4 is connected to the pin 4 of the step-down chip U6, one end of capacitor C35, one end of capacitor EC10, and the DC input and control signal conversion module (3). The other ends of capacitor C35 and capacitor EC10 are grounded. The other end of inductor L4 outputs 5V power.

5. A fan light circuit with a two-wire DC power supply loading signal according to claim 1, characterized in that: The DC input and control signal conversion module (3) includes a transistor Q3 and a connection terminal DC IN1 connected to the control command input module (2). The collector of transistor Q3 is connected to one end of resistor R5 and one end of resistor R8 respectively. The other end of resistor R5 is connected to the control command input module (2). The other end of resistor R8 is connected to one end of resistor R9, one end of capacitor C2 and MCU control module (4) respectively. The other end of resistor R9, the other end of capacitor C2 and the emitter of transistor Q3 are grounded respectively. The base of transistor Q3 is connected to one end of resistor R1 and one end of resistor R6 through one end of resistor R10 respectively. The other end of resistor R1 is connected to the positive terminal of diode D1 and one end of fuse F1 respectively. The negative terminal of diode D1 is connected to the positive terminal of electrolytic capacitor EC1. The negative terminal of electrolytic capacitor EC1 and the other end of resistor R6 are grounded. The other end of fuse F1 is connected to pin 1 of connection terminal DC IN1. The other end of connection terminal DC IN1 is grounded. The negative terminal of diode D1 outputs VDD power supply.

6. The fan light circuit with a two-wire DC power supply loading signal according to claim 1, characterized in that: The step-down module (5) includes a step-down chip U1. Pin 1 of the step-down chip U1 is connected to the DC input and control signal conversion module (3), one end of capacitor C11, and the positive terminal of electrolytic capacitor EC6. The negative terminal of electrolytic capacitor EC6, the other end of capacitor C11, and pin 2 of step-down chip U1 are grounded. Pin 5 of step-down chip U1 is connected to one end of inductor L3. The other end of inductor L3 is connected to pin 4 of step-down chip U1 and one end of capacitor EC7. The other end of inductor EC7 is grounded. The other end of inductor L3 is connected to the MCU control module (4) for power supply.

7. A fan light circuit with a two-wire DC power supply loading signal according to claim 1, characterized in that: The MCU control module (4) is connected to a fan drive module (6) for driving the fan and an LED drive module (7) for driving the LED. The DC input and control signal conversion module (3) is connected to the fan drive module (6) and the LED drive module (7) for power supply respectively. The step-down module (5) is connected to the LED drive module (7) for power supply.

8. A fan light circuit with a two-wire DC power supply loading signal according to claim 7, characterized in that: The MCU control module (4) is connected to an RF receiver module (8) for receiving wireless remote control signals, and the step-down module (5) is connected to the RF receiver module (8) for power supply; the MCU control module (4) is connected to a WIFI communication module (9) for receiving wireless remote control signals, and the step-down module (5) is connected to the WIFI communication module (9) for power supply.

9. A fan light circuit with a two-wire DC power supply loading signal according to claim 8, characterized in that: The MCU control module (4) is connected to a buzzer module (10) for sound prompts and a programming module (11) for programming. The DC input and control signal conversion module (3) is connected to the buzzer module (10).

10. A fan light circuit with a two-wire DC power supply loading signal according to claim 9, characterized in that: The MCU control module (4) includes a control chip U4. Pin 1 of the control chip U4 is grounded. Pins 2-3, 7-8, 11-12, 16-17, and 27-32 of the control chip U4 are connected to the fan drive module (6) respectively. Pin 4 of the control chip U4 is connected to one end of resistor R47 and one end of capacitor C25 respectively. Pin 5 of the control chip U4 is grounded. Pin 6 of the control chip U4 is connected to one end of capacitor C20, one end of capacitor C19, the other end of resistor R47, one end of resistor R41, and one end of resistor R48 respectively. The other end of capacitor C20, the other end of capacitor C19, and the other end of capacitor C25 are connected to the other end of capacitor C25. One end of each resistor is grounded. The other end of resistor R41 is connected to the step-down module (5). The other end of resistor R48 is connected to the positive terminal of indicator light LD1. The other end of indicator light LD1 is grounded. Pins 9-10 of control chip U4 are connected to LED driver module (7). Pin 14 of control chip U4 is connected to pin 4 of connection terminal CN. Pin 15 of control chip U4 is connected to pin 6 of connection terminal CN. Pins 1-2 of connection terminal CN are connected to step-down module (5). Pins 3 and 5 of connection terminal CN are connected to WIFI communication module (9) and programming module (11) respectively. Pin 8 of connection terminal CN is grounded. CN pin 9 is connected to the RF receiving module (8) and the WIFI communication module (9) respectively. Control chip U4 pin 18 is connected to one end of capacitor C26, one end of resistor R46, and one end of resistor R49 respectively. The other end of capacitor C26 and the other end of resistor R49 are extremely low. The other end of resistor R46 is connected to the fan drive module (6). Control chip U4 pin 19 is connected to the DC input and control signal conversion module (3). Control chip U4 pin 20 is connected to the RF receiving module (8). Control chip U4 pin 21 is connected to the connection terminal CN2 pin 3. Control chip U4 pin 22 is connected to the connection terminal C N2 pin 5 is connected to the buzzer module (10), control chip U4 pin 23 is connected to the LED lamp driver module (7), control chip U4 pin 24 is grounded through capacitor C18, control chip U4 pin 25 is connected to one end of resistor R34 and one end of capacitor C17 respectively, the other end of capacitor C17 is grounded, the other end of resistor R34 is connected to control chip U4 pin 26, buck chip U2 pin 1 and one end of resistor RJ1 respectively, buck chip U2 pin 3 is connected to the other end of resistor RJ1, switching power supply module (1) and one end of capacitor C14 respectively, the other end of capacitor C14 and buck chip U2 pin 2 are grounded respectively.

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