A fan lamp control system based on 0-10V signal control

Abstract

This utility model discloses a fan light control system based on 0-10V signal control, including an external controller for inputting 0-10V DC analog control input signals for speed adjustment, direction adjustment, and dimming; a main control circuit for outputting corresponding control signals according to control commands and zero-crossing signals; and an AC input rectifier circuit. The AC input rectifier circuit is sequentially connected to an AC-DC power supply circuit, a DC-DC power supply circuit, and a DC isolation power supply circuit. The external controller is connected to a 0-10V signal processing circuit connected to the main control circuit for converting the 0-10V DC analog control input signals into corresponding control commands and sending them to the main control circuit. The main control circuit is connected to a zero-crossing detection circuit, a fan control circuit, and a light control circuit connected to the AC input rectifier circuit. The DC-DC power supply circuit supplies power to the main control circuit and the 0-10V signal processing circuit, and the DC isolation power supply circuit supplies power to the 0-10V signal processing circuit, realizing the function of comprehensive control of fan light dimming, speed adjustment, and direction adjustment based on 0-10V DC analog signals.

Description

[Technical Field]

[0001] This utility model relates to the field of smart home and lighting control technology, and in particular to a fan light control system based on 0-10V signal control. [Background Technology]

[0002] Fan lights, as a popular home and commercial product combining lighting and fan functions, are favored for their space-saving and versatile features. Currently, most fan lights on the market are controlled using one of two methods: First, by using separate pull cords or multiple wall switches to control the light and fan individually, which is inconvenient to operate and involves complex wiring; second, by using wireless / infrared remote controls, which can generate interference signals on the same frequency and is not suitable for scenarios where multiple fan lights are installed.

[0003] On the other hand, in building automation systems (BAS) or smart home, hotel, classroom, and conference room systems, existing fan-light products lack an integrated circuit solution capable of simultaneously receiving a single 0-10V signal to coordinately control both light brightness and fan speed. Furthermore, fan-lights with forward and reverse rotation functions can adapt to different seasonal needs, such as forward rotation for cooling in summer and reverse rotation to agitate air and reduce temperature differences in winter. Currently, the forward / reverse switching of existing products mostly relies on additional mechanical switches, separate control lines, or extra buttons on remote controls, which increases system complexity and cost.

[0004] Therefore, there is an urgent need for an innovative circuit design to fill this technological gap and enable the fan light to be seamlessly integrated into standard automated intelligent control systems. [Utility Model Content]

[0005] This invention overcomes the shortcomings of the prior art and provides a fan light control system based on 0-10V signal control that has a reasonable structure, precise control, and strong compatibility.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fan-light control system based on 0-10V signal control is characterized by: an external controller for inputting 0-10V DC analog fan speed control input signals, 0-10V DC analog fan direction control input signals, and 0-10V DC analog dimming control input signals; a main control circuit for outputting corresponding fan speed control signals, fan direction control signals, and dimming control signals according to fan speed control commands, fan direction control commands, lamp dimming control commands, and zero-crossing signals; and an AC input rectifier circuit for converting AC mains power to DC power. The AC input rectifier circuit is sequentially connected to an AC-DC power supply circuit for filtering, a DC-DC power supply circuit for step-down, and a DC isolated power supply circuit for outputting isolated DC power. The external controller is connected to the main controller... The circuit connection is used to convert the 0-10V DC analog fan speed control input signal, 0-10V DC analog fan direction control input signal, and 0-10V DC analog dimming control input signal into corresponding fan speed control commands, fan direction control commands, and lamp dimming control commands, and send them to the main control circuit. The main control circuit is connected to a zero-crossing detection circuit connected to the AC input rectifier circuit for detecting zero-crossing signals and sending them to the main control circuit, a fan control circuit for driving the fan to work according to the fan speed control signal and the fan direction control signal, and a lamp control circuit for driving the lamp to work according to the lamp dimming control signal. The DC-DC power supply circuit supplies power to the main control circuit and the 0-10V signal processing circuit respectively, and the DC isolation power supply circuit supplies power to the 0-10V signal processing circuit.

[0008] The fan light control system based on 0-10V signal control described above is characterized in that: the 0-10V signal processing circuit includes a 0-10V speed regulation signal processing circuit, a 0-10V steering signal processing circuit, and a 0-10V dimming signal processing circuit.

[0009] The fan light control system based on 0-10V signal control described above is characterized in that: the 0-10V speed regulation signal processing circuit includes a voltage amplifier U8; pin 1 of voltage amplifier U8 is connected to the +5V_ISO power supply terminal of the DC isolation power supply circuit and one end of capacitor C66, the other end of C66 is connected to the GND_I ground terminal of the DC isolation power supply circuit; pin 2 of voltage amplifier U8 is connected to one end of capacitor C70, the negative terminal of Zener diode ZD4, one end of resistor R68, and one end of resistor R61, the other end of resistor R61 is connected to one end of capacitor C73, one end of transient voltage suppression diode TD2, and the speed regulation control signal output terminal of the external controller; pins 3-4 of voltage amplifier U8, the other end of capacitor C70, the negative terminal of Zener diode ZD4, the other end of resistor R68, the other end of capacitor C72, and the other end of transient voltage suppression diode TD2 are connected to the GND_I ground terminal of the DC isolation power supply circuit; pin 5 of voltage amplifier U8 is connected to the GND_A ground terminal; and pin 6 of voltage amplifier U8 is connected to the... One end of capacitor C72 and one end of resistor R67 are connected. The other end of capacitor C72 is connected to pin 7 of voltage amplifier U8 and one end of resistor R66. The other end of resistor R67 is connected to pin 2 of op-amp U9A, one end of resistor R69, and one end of capacitor C74. The other end of resistor R69 is connected to the other end of capacitor C74 and pin 1 of op-amp U9A. The other end of resistor R66 is connected to one end of resistor R65 and pin 3 of op-amp U9A. The other end of resistor R65 and pin 4 of op-amp U9A are connected to GND_A. With the ground connection established, pin 8 of op-amp U9A is connected to one end of capacitor C69, one end of capacitor C68, and one end of resistor R32. The other ends of capacitors C69 and C68 are connected to the GND_A ground terminal. The other end of resistor R32 is connected to the +15V power supply terminal of the DC-DC power supply circuit. Pin 1 of op-amp U9A is connected to the main control circuit. Pin 8 of voltage amplifier U8 is connected to one end of capacitor C65 and the 5V power supply terminal of the DC-DC power supply circuit. The other end of capacitor C65 is connected to the GND_A ground terminal.

[0010] The fan light control system based on 0-10V signal control described above is characterized in that: the 0-10V dimming signal processing circuit includes a voltage amplifier U10, pin 1 of which is connected to the +5V_ISO power supply terminal of the DC isolated power supply circuit and one end of capacitor C77, the other end of C77 is connected to the GND_I ground terminal of the DC isolated power supply circuit; pin 2 of voltage amplifier U8 is connected to one end of capacitor C79, the negative terminal of Zener diode ZD5, one end of resistor R74, and one end of resistor R71, the other end of resistor R71 is connected to one end of capacitor C82, one end of transient voltage suppression diode TD3, and the dimming control signal output terminal of the external controller; pins 3-4 of voltage amplifier U10, the other end of capacitor C79, the negative terminal of Zener diode ZD5, the other end of resistor R74, the other end of capacitor C82, and the other end of transient voltage suppression diode TD3 are respectively connected to... The GND_I ground terminal of the DC isolated power supply circuit is connected. Pin 5 of voltage amplifier U10 is connected to the GND_A ground terminal. Pin 6 of voltage amplifier U8 is connected to one end of capacitor C81 and one end of resistor R73. The other end of capacitor C81 is connected to pin 7 of voltage amplifier U8 and one end of resistor R72. The other end of resistor R73 is connected to pin 6 of op-amp U9B, one end of resistor 75, and one end of capacitor C83. The other end of resistor R75 is connected to the other end of capacitor C83 and pin 7 of op-amp U9B. The other end of resistor R72 is connected to one end of resistor R70 and pin 5 of op-amp U9B. The other end of resistor R65 is connected to the GND_A ground terminal. Pin 1 of op-amp U9B is connected to the main control circuit. Pin 8 of voltage amplifier U10 is connected to one end of capacitor C76 and the 5V power supply terminal of the DC-DC power supply circuit. The other end of capacitor C76 is connected to the GND_A ground terminal.

[0011] The fan light control system based on 0-10V signal control described above is characterized in that: the 0-10V steering signal processing circuit includes an optocoupler U11, pin 1 of the optocoupler U11 is connected to the +5V_ISO power supply terminal of the DC isolation power supply circuit through resistor R77, pin 2 of the optocoupler U11 is connected to one end of capacitor C85, one end of transient voltage suppression diode TD4, and the steering control signal output terminal of the external controller, the other end of capacitor C85 and the other end of transient voltage suppression diode TD4 are connected to the GND_I ground terminal of the DC isolation power supply circuit, pin 4 of the optocoupler U11 is connected to one end of resistor R76, one end of capacitor C84, and the main control circuit, the other end of resistor R76 is connected to the 5V power supply terminal of the DC-DC power supply circuit, and the other end of capacitor C84 and pin 3 of the optocoupler U11 are connected to the GND_A ground terminal.

[0012] The fan light control system based on 0-10V signal control described above is characterized in that: the zero-crossing detection circuit includes an optocoupler U2, pin 1 of optocoupler U2 is connected to the live wire terminal of AC input rectifier circuit ACL_1 through resistor R6, pin 2 of optocoupler U2 is connected to the positive terminal of diode D5 through resistor R10, the negative terminal of diode D5 is connected to the neutral wire terminal of AC input rectifier circuit ACN_1, pin 4 of optocoupler U2 is connected to one end of resistor R7, one end of capacitor C4, and one end of resistor R9 respectively, the other end of resistor R7 is connected to the 5V power supply terminal of DC-DC power supply circuit, the other end of resistor R9 is connected to one end of capacitor C5 and the main control circuit respectively, and pin 5 of optocoupler U2, the other end of capacitor C4, and the other end of capacitor C5 are connected to the GND ground terminal respectively.

[0013] The fan light control system based on 0-10V signal control described above is characterized in that: the DC isolation power supply circuit includes a DC isolation module DC1, pin 1 of the DC isolation module DC1 is connected to one end of capacitor C59, one end of capacitor C58, and the +15V power supply terminal of the DC-DC power supply circuit respectively; pin 2 of the DC isolation module DC1, the other end of capacitor C59, and the other end of capacitor C58 are connected to the GND_A ground terminal respectively; pin 6 of the DC isolation module DC1 is connected to one end of capacitor C61, one end of resistor R78, and pin 5 of voltage regulator U7 respectively; pin 4 of the DC isolation module DC1 is connected to the other end of capacitor C61, one end of capacitor C63, and pin 1 of voltage regulator U7 respectively; the other end of capacitor C63 is connected to pin 3 of voltage regulator U7; pin 6 of the DC isolation module DC1 serves as the +15V_ISO power supply terminal of the DC isolation power supply circuit; pin 4 of the DC isolation module DC1 serves as the GND_I ground terminal of the DC isolation power supply circuit; and pin 3 of the voltage regulator U7 serves as the +5V_ISO power supply terminal of the DC isolation power supply circuit.

[0014] The beneficial effects of this utility model are:

[0015] This invention features a 0-10V signal processing circuit that receives 0-10V DC analog fan speed control input signals, 0-10V DC analog fan direction control input signals, and 0-10V DC analog dimming control input signals from an external controller. It converts these 0-10V DC analog control input signals into corresponding speed, direction, or dimming control commands, enabling the main control circuit to control the fan light to perform the corresponding operations. By incorporating a 0-10V signal processing circuit with a standard 0-10V analog signal interface, it allows for stepless adjustment of light brightness and fan speed. Furthermore, it innovatively integrates fan direction adjustment switching, achieving comprehensive control of the integrated fan light's lighting brightness, fan speed, and fan direction based on 0-10V DC analog signals. [Image Description]

[0016] Figure 1 This is the circuit schematic diagram of this utility model;

[0017] Figure 2 This is a schematic diagram of the AC input rectifier circuit and the AC-DC power supply circuit of this utility model;

[0018] Figure 3 This is a schematic diagram of the DC-DC power supply circuit of this utility model;

[0019] Figure 4 This is a schematic diagram of the DC isolation power supply circuit of this utility model;

[0020] Figure 5 This is a schematic diagram of the 0-10V signal processing circuit of this utility model;

[0021] Figure 6 This is a schematic diagram of the zero-crossing detection circuit of this utility model;

[0022] Figure 7 This is a schematic diagram of the main control circuit of this utility model;

[0023] Figure 8 This is a schematic diagram of the lamp control circuit of this utility model;

[0024] Figure 9 This is a schematic diagram of the fan control circuit of this utility model. [Detailed Implementation]

[0025] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0026] 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.

[0027] like Figure 1-9As shown, a fan-light control system based on 0-10V signal control includes an external controller 1 for inputting 0-10V DC analog fan speed control input signals, 0-10V DC analog fan direction control input signals, and 0-10V DC analog dimming control input signals; a main control circuit 2 for outputting corresponding fan speed control signals, fan direction control signals, and dimming control signals according to fan speed control commands, fan direction control commands, lamp dimming control commands, and zero-crossing signals; and an AC input rectifier circuit 3 for converting AC mains power to DC power. The AC input rectifier circuit 3 is sequentially connected to an AC-DC power supply circuit 4 for filtering, a DC-DC power supply circuit 5 for stepping down, and a DC isolated power supply circuit 6 for outputting isolated DC power. The external controller 1 is connected to the main control circuit 2. The main control circuit 2 is connected to a 0-10V signal processing circuit 7, which converts the 0-10V DC analog fan speed control input signal, the 0-10V DC analog fan direction control input signal, and the 0-10V DC analog dimming control input signal into corresponding fan speed control commands, fan direction control commands, and lamp dimming control commands and sends them to the main control circuit 2. The main control circuit 2 is connected to a zero-crossing detection circuit 8, which is connected to the AC input rectifier circuit 3, for detecting zero-crossing signals and sending them to the main control circuit 2; a fan control circuit 9, which drives the fan to work according to the fan speed control signal and the fan direction control signal; and a lamp control circuit 10, which drives the lamp to work according to the lamp dimming control signal. The DC-DC power supply circuit 5 supplies power to the main control circuit 2 and the 0-10V signal processing circuit 7 respectively, and the DC isolation power supply circuit 6 supplies power to the 0-10V signal processing circuit 7.

[0028] In practical applications, the AC input rectifier circuit 3 rectifies the input AC mains power into DC power, the AC-DC power supply circuit 4 filters the rectified DC power, and the DC-DC power supply circuit 5 steps down the filtered DC power before supplying power to the main control circuit 2 and the 0-10V signal processing circuit 7 respectively; the DC isolation power supply circuit 6 isolates the stepped-down DC power before supplying power to the 0-10V signal processing circuit 7, isolating the interference signals of the DC power and avoiding interference with the control input signals of the external controller 1. After receiving a 0-10V DC analog fan speed control input signal, a 0-10V DC analog fan direction control input signal, or a 0-10V DC analog dimming control input signal from the external controller 1, the 0-10V signal processing circuit 7 processes the control input signal and converts it into a corresponding control command, which is then sent to the main control circuit 2. Simultaneously, the zero-crossing detection circuit 8 detects the zero-crossing signal of the AC mains power and sends it to the main control circuit 2. The main control circuit 2 outputs the corresponding control signal to the fan control circuit 9 or the lamp control circuit 10 based on the control command and the zero-crossing signal, causing the fan control circuit 9 to drive the fan or the lamp control circuit 10 to drive the lamp to perform the corresponding operation. By setting up a 0-10V signal processing circuit with a standard 0-10V analog signal interface, the integrated fan-light's lighting brightness, fan speed, and fan direction can be comprehensively controlled based on an external 0-10V DC analog signal.

[0029] In this case, the 0-10V signal processing circuit 7 includes a 0-10V speed regulation signal processing circuit 71, a 0-10V steering signal processing circuit 72, and a 0-10V dimming signal processing circuit 73.

[0030] The 0-10V dimming signal processing circuit 73 is configured to: when the voltage of the 0-10V DC analog dimming control input signal input from the external controller 1 is lower than a preset dimming low-level threshold, determine it as a lamp-off command; when the voltage of the 0-10V DC analog dimming control input signal input from the external controller 1 is higher than the preset dimming low-level threshold, determine it as a lamp-on command. Simultaneously, multiple brightness level adjustment commands can be set between the dimming low-level threshold and 10V. For example, if the preset dimming low-level threshold is set to 1V, and 9 brightness levels are set between 2V and 10V, then when the voltage of the 0-10V DC analog dimming control input signal input from the external controller 1 is lower than 1V, the 0-10V dimming signal processing circuit 73 processes the dimming control input signal and converts it into a lamp-off command; when the voltage of the 0-10V DC analog dimming control input signal input from the external controller 1 is higher than 1V, the 0-10V dimming signal processing circuit 73 processes the dimming control input signal and converts it into an operating command for the corresponding light brightness level.

[0031] The 0-10V speed control signal processing circuit 71 is configured to: when the voltage of the 0-10V DC analog speed control input signal from the external controller 1 is lower than a preset low-level speed control threshold, determine it as a fan-off command; when the voltage of the 0-10V DC analog speed control input signal from the external controller 1 is higher than the preset low-level speed control threshold, determine it as a fan-on command. Simultaneously, multiple fan speed adjustment commands can be set between the low-level speed control threshold and 10V. For example, if the preset low-level threshold is set to 1V, and 9 fan speeds are set between 2V and 10V, then when the voltage of the 0-10V DC analog speed control input signal from the external controller 1 is lower than 1V, the 0-10V speed control signal processing circuit 71 processes the speed control input signal and converts it into a fan-off command; when the voltage of the 0-10V DC analog speed control input signal from the external controller 1 is higher than 1V, the 0-10V speed control signal processing circuit 71 processes the speed control input signal and converts it into an operating command for the corresponding fan speed level.

[0032] The 0-10V steering signal processing circuit 72 is configured to: determine a reverse steering command when the voltage of the 0-10V DC analog fan steering control input signal input from the external controller 1 is lower than a preset steering level threshold; and determine a forward steering command when the voltage of the 0-10V DC analog fan steering control input signal input from the external controller 1 is higher than the preset steering level threshold. For example, if the preset steering level threshold is set to 1V, when the voltage of the 0-10V DC analog steering control input signal input from the external controller 1 is lower than 1V, the 0-10V steering signal processing circuit 72 processes the steering control input signal and converts it into a forward steering command; when the voltage of the 0-10V DC analog steering control input signal input from the external controller 1 is higher than 1V, the 0-10V steering signal processing circuit 72 processes the steering control input signal and converts it into a reverse steering command.

[0033] Figure 2 The diagram shows the structure of the AC input rectifier circuit and the AC-DC power supply circuit. The AC mains power is rectified into DC power after passing through the inductor, resistor, rectifier and other devices in the AC input rectifier circuit 3. Then, it is filtered by the switching chip U1 and its peripheral circuit in the AC-DC power supply circuit. Figure 3 The diagram shows the structure of a DC-DC power supply circuit. The filtered DC power is stepped down by the voltage regulator U3 and its peripheral circuits in the DC-DC power supply circuit 5, reducing the 15V DC power to 5V DC power, and then supplying power to the main control circuit 2 and the 0-10V signal processing circuit 7 respectively. Figure 4 The diagram shows the structure of a DC isolated power supply circuit. The DC isolation module DC1 and the voltage regulator U7 in the DC isolated power supply circuit 6, along with their peripheral circuits, isolate the interference from the external power supply, thus preventing interference with the control input signal of the external controller 1.

[0034] Figure 5 The diagram shows the structure of the 0-10V signal processing circuit. In the 0-10V speed control signal processing circuit 71, voltage amplifier U8 and operational amplifier U9A, along with their peripheral circuits, convert the 0-10V DC analog speed control input signal from the external controller 1 into a corresponding fan speed control command and send it to the main control circuit 2. In the 0-10V steering signal processing circuit 72, voltage amplifier U10 and operational amplifier U9B, along with their peripheral circuits, convert the 0-10V DC analog dimming control input signal from the external controller 1 into a corresponding lamp dimming control command and send it to the main control circuit 2. In the 0-10V dimming signal processing circuit 73, optocoupler U11 and its peripheral circuits convert the 0-10V DC analog fan steering control input signal from the external controller 1 into a corresponding steering control command and send it to the main control circuit 2.

[0035] Figure 6 The diagram shows the structure of the zero-crossing detection circuit. In the zero-crossing detection circuit 8, the optocoupler U2 and its peripheral circuits detect the zero-crossing signal of the AC mains power and send it to the main control circuit 2. Figure 7 The main control circuit structure diagram shows that after receiving the fan speed control command, fan direction control command, lamp dimming control command and zero crossing signal, the main control chip U4 outputs the corresponding fan speed control signal, fan direction control signal and lamp dimming control signal to the fan control circuit 9 and the lamp control circuit 10 respectively. Figure 8 This is a diagram of the lamp control circuit structure. Figure 9 This is a schematic diagram of the fan control circuit.

[0036] 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 control system based on 0-10V signal control, characterized in that: The system includes an external controller (1) for inputting 0-10V DC analog fan speed control input signals, 0-10V DC analog fan direction control input signals, and 0-10V DC analog dimming control input signals; a main control circuit (2) for outputting corresponding fan speed control signals, fan direction control signals, and lamp dimming control signals based on fan speed control commands, fan direction control commands, lamp dimming control commands, and zero-crossing signals; and an AC input rectifier circuit (3) for converting AC mains power to DC power. The AC input rectifier circuit (3) is sequentially connected to an AC-DC power supply circuit (4) for filtering, a DC-DC power supply circuit (5) for stepping down, and a DC isolation power supply circuit (6) for outputting isolated DC power. The external controller (1) is connected to the main control circuit (2) for controlling the speed of the 0-10V DC analog fan. The control input signal, 0-10V DC analog fan direction control input signal, and 0-10V DC analog dimming control input signal are converted into corresponding fan speed control commands, fan direction control commands, and lamp dimming control commands and sent to the 0-10V signal processing circuit (7) of the main control circuit (2). The main control circuit (2) is connected to the AC input rectifier circuit (3) for detecting zero-crossing signals and sending them to the main control circuit (2), the fan control circuit (9) for driving the fan to work according to the fan speed control signal and the fan direction control signal, and the lamp control circuit (10) for driving the lamp to work according to the lamp dimming control signal. The DC-DC power supply circuit (5) supplies power to the main control circuit (2) and the 0-10V signal processing circuit (7) respectively, and the DC isolation power supply circuit (6) supplies power to the 0-10V signal processing circuit (7).

2. The fan light control system based on 0-10V signal control according to claim 1, characterized in that: The 0-10V signal processing circuit (7) includes a 0-10V speed regulation signal processing circuit (71), a 0-10V steering signal processing circuit (72), and a 0-10V dimming signal processing circuit (73).

3. The fan light control system based on 0-10V signal control according to claim 2, characterized in that: The 0-10V speed control signal processing circuit (71) includes a voltage amplifier U8. Pin 1 of the voltage amplifier U8 is connected to the +5V_ISO power supply terminal of the DC isolation power supply circuit (6) and one end of capacitor C66. The other end of C66 is connected to the GND_I ground terminal of the DC isolation power supply circuit (6). Pin 2 of the voltage amplifier U8 is connected to one end of capacitor C70, the negative terminal of Zener diode ZD4, one end of resistor R68, and one end of resistor R61. The other end of resistor R61 is connected to one end of capacitor C73 and the transient voltage regulator. One end of the voltage suppression diode TD2 is connected to the speed control signal output terminal of the external controller (1). Pins 3-4 of the voltage amplifier U8, the other end of capacitor C70, the negative terminal of the Zener diode ZD4, the other end of resistor R68, the other end of capacitor C72, and the other end of transient voltage suppression diode TD2 are respectively connected to the GND_I ground terminal of the DC isolation power supply circuit (6). Pin 5 of the voltage amplifier U8 is connected to the GND_A ground terminal. Pin 6 of the voltage amplifier U8 is respectively connected to one end of capacitor C72, one end of resistor R67, and the other end of the transient voltage suppression diode TD2. The terminals are connected as follows: the other end of capacitor C72 is connected to pin 7 of voltage amplifier U8 and one end of resistor R66; the other end of resistor R67 is connected to pin 2 of op-amp U9A, one end of resistor R69, and one end of capacitor C74; the other end of resistor R69 is connected to the other end of capacitor C74 and pin 1 of op-amp U9A; the other end of resistor R66 is connected to one end of resistor R65 and pin 3 of op-amp U9A; the other end of resistor R65 and pin 4 of op-amp U9A are connected to the GND_A ground terminal; op-amp U9A... Pin 8 is connected to one end of capacitor C69, one end of capacitor C68, and one end of resistor R32 respectively. The other end of capacitor C69 and the other end of capacitor C68 are connected to the ground terminal GND_A respectively. The other end of resistor R32 is connected to the +15V power supply terminal of DC-DC power supply circuit (5). Pin 1 of op-amp U9A is connected to the main control circuit (2). Pin 8 of voltage amplifier U8 is connected to one end of capacitor C65 and the 5V power supply terminal of DC-DC power supply circuit (5) respectively. The other end of capacitor C65 is connected to the ground terminal GND_A.

4. The fan light control system based on 0-10V signal control according to claim 2, characterized in that: The 0-10V dimming signal processing circuit (73) includes a voltage amplifier U10. Pin 1 of the voltage amplifier U10 is connected to the +5V_ISO power supply terminal of the DC isolation power supply circuit (6) and one end of capacitor C77. The other end of C77 is connected to the GND_I ground terminal of the DC isolation power supply circuit (6). Pin 2 of the voltage amplifier U8 is connected to one end of capacitor C79, the negative terminal of Zener diode ZD5, one end of resistor R74, and one end of resistor R71. The other end of resistor R71 is connected to one end of capacitor C82, one end of transient voltage suppression diode TD3, and the dimming control signal output terminal of the external controller (1). Pins 3-4 of the voltage amplifier U10, the other end of capacitor C79, the negative terminal of Zener diode ZD5, the other end of resistor R74, the other end of capacitor C82, and the other end of transient voltage suppression diode TD3 are connected to the GND of the DC isolation power supply circuit (6). Connect the ground terminal of _I, connect pin 5 of voltage amplifier U10 to the ground terminal of GND_A, connect pin 6 of voltage amplifier U8 to one end of capacitor C81 and one end of resistor R73 respectively, connect the other end of capacitor C81 to pin 7 of voltage amplifier U8 and one end of resistor R72 respectively, connect the other end of resistor R73 to pin 6 of op-amp U9B, one end of resistor 75 and one end of capacitor C83 respectively, connect the other end of resistor R75 to the other end of capacitor C83 and pin 7 of op-amp U9B respectively, connect the other end of resistor R72 to one end of resistor R70 and pin 5 of op-amp U9B respectively, connect the other end of resistor R65 to the ground terminal of GND_A, connect pin 1 of op-amp U9B to the main control circuit (2), connect pin 8 of voltage amplifier U10 to one end of capacitor C76 and the 5V power supply terminal of DC-DC power supply circuit (5) respectively, connect the other end of capacitor C76 to the ground terminal of GND_A.

5. The fan light control system based on 0-10V signal control according to claim 2, characterized in that: The 0-10V steering signal processing circuit (72) includes an optocoupler U11. Pin 1 of the optocoupler U11 is connected to the +5V_ISO power supply terminal of the DC isolation power supply circuit (6) through resistor R77. Pin 2 of the optocoupler U11 is connected to one end of capacitor C85, one end of transient voltage suppression diode TD4, and the steering control signal output terminal of the external controller (1). The other end of capacitor C85 and the other end of transient voltage suppression diode TD4 are connected to the GND_I ground terminal of the DC isolation power supply circuit (6). Pin 4 of the optocoupler U11 is connected to one end of resistor R76, one end of capacitor C84, and the main control circuit (2). The other end of resistor R76 is connected to the 5V power supply terminal of the DC-DC power supply circuit (5). The other end of capacitor C84 and pin 3 of the optocoupler U11 are connected to the GND_A ground terminal.

6. The fan light control system based on 0-10V signal control according to claim 1, characterized in that: The zero-crossing detection circuit (8) includes an optocoupler U2. Pin 1 of the optocoupler U2 is connected to the ACL_1 live wire of the AC input rectifier circuit (3) through resistor R6. Pin 2 of the optocoupler U2 is connected to the positive terminal of diode D5 through resistor R10. The negative terminal of diode D5 is connected to the ACN_1 neutral wire of the AC input rectifier circuit (3). Pin 4 of the optocoupler U2 is connected to one end of resistor R7, one end of capacitor C4, and one end of resistor R9. The other end of resistor R7 is connected to the 5V power supply terminal of the DC-DC power supply circuit (5). The other end of resistor R9 is connected to one end of capacitor C5 and the main control circuit (2). Pin 5 of the optocoupler U2, the other end of capacitor C4, and the other end of capacitor C5 are connected to the GND ground terminal.

7. The fan light control system based on 0-10V signal control according to claim 1, characterized in that: The DC isolation power supply circuit (6) includes a DC isolation module DC1. The first pin of the DC isolation module DC1 is connected to one end of capacitor C59, one end of capacitor C58, and the +15V power supply terminal of the DC-DC power supply circuit (5). The second pin of the DC isolation module DC1, the other end of capacitor C59, and the other end of capacitor C58 are connected to the GND_A ground terminal. The sixth pin of the DC isolation module DC1 is connected to one end of capacitor C61, one end of resistor R78, and the fifth pin of regulator U7. The fourth pin of the DC isolation module DC1 is connected to the other end of capacitor C61, one end of capacitor C63, and the first pin of regulator U7. The other end of capacitor C63 is connected to the third pin of regulator U7. The sixth pin of the DC isolation module DC1 serves as the +15V_ISO power supply terminal of the DC isolation power supply circuit (6). The fourth pin of the DC isolation module DC1 serves as the GND_I ground terminal of the DC isolation power supply circuit (6). The third pin of regulator U7 serves as the +5V_ISO power supply terminal of the DC isolation power supply circuit (6).

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