CN217335982U

CN217335982U - Fan lamp control circuit and fan lamp

Info

Publication number: CN217335982U
Application number: CN202220979724.5U
Authority: CN
Inventors: 黎国权
Original assignee: Opple Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-08-30
Anticipated expiration: 2032-04-26

Abstract

The utility model provides a fan lamp control circuit and fan lamp, fan lamp control circuit includes: the filter rectifying circuit is used for converting commercial power alternating current into high-voltage direct current; the DC-DC constant voltage power supply circuit is used for converting high-voltage direct current into low-voltage direct current and supplying the low-voltage direct current to the three-phase motor driving circuit of the fan lamp; the BUCK constant current power supply circuit is used for converting high-voltage direct current into constant current to be supplied to the lighting module of the fan lamp; the driving control circuit is used for controlling the three-phase motor driving circuit to convert the low-voltage direct current into three-phase alternating current so as to drive the fan of the fan lamp to rotate; the sampling circuit is used for detecting the commercial power alternating current and outputting a rising edge signal or a falling edge signal; the driving control circuit is also used for detecting and identifying a rising edge signal or a falling edge signal output by the sampling circuit, and outputting a control signal to the three-phase motor driving circuit and the BUCK constant current power supply circuit so as to drive the fan of the fan lamp to rotate and adjust the on/off of the lighting module.

Description

Fan lamp control circuit and fan lamp

Technical Field

The utility model relates to a fan lamp control circuit and fan lamp belongs to automatic control technical field.

Background

With the increasing popularization of fan lamps installed on ceilings, the control function of the fan lamps pursues simplicity and convenience, and the existing scheme is generally to control by adopting a remote controller. For the current household appliances, a remote controller is generally selected for control, such as: televisions, fans, DVDs, stereos, air conditioners, lamps, etc., result in many remote controllers at home. When the corresponding electric appliance needs to be controlled by the remote controller, the corresponding remote controller needs to be found first, and then the corresponding electric appliance can be controlled. For some people, the remote controller is sometimes forgotten to be put back to the original position when the remote controller is used up, and the remote controller can not be found when the remote controller is needed, so that the remote controller is very inconvenient. In addition, the remote controllers are generally powered by dry batteries, which is not environment-friendly.

In view of the above, it is necessary to adjust the control method of the conventional fan lamp to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fan lamp control circuit and applied this fan lamp control circuit's fan lamp can control the fan lamp through quick power-on after the wall switch outage.

In order to achieve the above object, the utility model provides a fan lamp control circuit, include: the filter rectifying circuit is used for converting commercial power alternating current into high-voltage direct current; the DC-DC constant voltage power supply circuit is connected with the filter rectification circuit and is used for converting high-voltage direct current into low-voltage direct current and supplying the low-voltage direct current to the three-phase motor driving circuit of the fan lamp; the BUCK constant-current power supply circuit is connected with the filter rectifying circuit and is used for converting high-voltage direct current into constant-current to be supplied to the lighting module of the fan lamp; the driving control circuit is connected with the three-phase motor driving circuit and is used for controlling the three-phase motor driving circuit to convert low-voltage direct current into three-phase alternating current so as to drive a fan of the fan lamp to rotate; the sampling circuit is connected between the filter rectification circuit and the drive control circuit and is used for detecting commercial power alternating current and outputting a rising edge signal or a falling edge signal; the driving control circuit is further used for detecting and identifying a rising edge signal or a falling edge signal output by the sampling circuit, and outputting a control signal to the three-phase motor driving circuit and the BUCK constant current power supply circuit so as to drive a fan of the fan lamp to rotate and adjust the on/off of the lighting module.

As a further improvement of the utility model, DC-DC constant voltage power supply circuit with still be connected with first electric capacity and first zener diode between the three-phase motor drive circuit, first electric capacity is used for the filtering, first zener diode with first electric capacity is parallelly connected for the back pressure that the motor of absorption fan lamp produced.

As a further improvement of the utility model, filter rectifier circuit includes the first filter circuit who links to each other with commercial power alternating current, the bridge rectifier circuit who links to each other with first filter circuit and the second filter circuit who links to each other with bridge rectifier circuit, DC-DC constant voltage power supply circuit with BUCK constant current power supply circuit all with second filter circuit links to each other.

As a further improvement of the utility model, the sampling circuit parallel connection be in first filter circuit with between the bridge rectifier circuit, the sampling circuit includes the first resistance and the second resistance of establishing ties each other, first resistance and second resistance are used for gathering the magnitude of voltage of commercial power alternating current.

As a further improvement of the present invention, the sampling circuit further includes a third resistor connected to the common end node of the first resistor and the second resistor, wherein the third resistor is used for trimming the sampling voltage value of the first resistor and the second resistor.

As a further improvement, the sampling circuit further includes a second zener diode connected to the second resistor, and a fourth resistor, a filter capacitor, and a third zener diode connected in parallel to each other between the second zener diode and the driving control circuit, the voltage value collected by the first resistor and the second resistor outputs a rising edge signal or a falling edge signal after the voltage reduction of the second zener diode and the fourth resistor, the filtering of the filter capacitor, and the voltage stabilization of the third zener diode.

As a further improvement of the present invention, when the commercial power alternating current is connected to the first filter circuit, the sampling circuit outputs a rising edge signal; when the commercial power alternating current is disconnected with the first filter circuit, the sampling circuit outputs a falling edge signal, and the drive control circuit is configured to adjust the rotating speed of the fan and/or the on/off of the lighting module according to the time interval between the rising edge signal and the falling edge signal.

As a further improvement of the present invention, the fan lamp control circuit further includes a low voltage power supply circuit connected to the output of the DC-DC constant voltage power supply circuit, the low voltage power supply circuit is used to convert the low voltage direct current outputted by the DC-DC constant voltage power supply circuit into a power supply voltage for supplying the driving control circuit.

As a further improvement, the fan lamp control circuit further comprises a buzzer connected with the driving control circuit, the buzzer is configured to send a prompt signal after the driving control circuit outputs a control signal.

In order to achieve the above object, the utility model also provides a fan lamp uses aforementioned fan lamp control circuit.

The utility model has the advantages that: the utility model discloses a fan lamp control circuit utilizes sampling circuit to detect and export rising edge or decline edge signal to the commercial power alternating current to drive control circuit can detect and discern rising edge or decline edge signal, then output control signal gives three-phase motor drive circuit and BUCK constant current power supply circuit, with the fan rotation of drive fan lamp and adjust lighting module's bright going out. Compared with the prior art, the utility model discloses need not the remote controller, can directly utilize to go up fast after the wall switch outage and control the fan lamp, have control convenience, environmental protection, reduced the advantage of fan lamp complete machine cost for the product competitiveness is stronger.

Drawings

Fig. 1 is a schematic structural diagram of a fan lamp according to a preferred embodiment of the present invention.

Fig. 2 is a schematic circuit diagram of a fan lamp control circuit according to a preferred embodiment of the present invention.

Fig. 3 is a schematic circuit diagram of the three-phase motor driving circuit of fig. 2 when driven by the drive control circuit.

Fig. 4 is a functional effect diagram of the fan lamp of the present invention after the fan lamp control circuit shown in fig. 2 is applied.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the present invention discloses a fan lamp 200, the fan lamp 200 is connected to the ac mains through a wall switch 300, so that when the wall switch 300 is in a closed state, the fan lamp 100 is connected to the ac mains, and the ac mains can supply power to the fan lamp 200; when the wall switch 300 is in the on state, the fan lamp 200 is disconnected from the commercial power ac, and the fan lamp 200 is in the power-off state and cannot work.

The utility model discloses mainly improve to the control circuit in fan lamp 200 to satisfy and utilize wall switch 300 outage back to go up the requirement of controlling fan lamp 200 fast, the event following description part will mainly carry out detailed description to fan lamp control circuit 100, no longer carries out detailed description to the concrete structure of fan lamp 200.

As shown in fig. 2, the fan lamp control circuit 100 includes a filter rectification circuit 10, a DC-DC constant voltage power supply circuit 20, a BUCK constant current power supply circuit 30, a drive control circuit 40, and a sampling circuit 50, wherein the filter rectification circuit 10 is connected to a commercial power alternating current for converting the commercial power alternating current into a high voltage direct current; the DC-DC constant voltage power supply circuit 20 is connected to the filter and rectifier circuit 10, and is configured to convert the high voltage DC power into low voltage DC power and supply the DC power to the three-phase motor driving circuit 60 of the fan lamp 200; the BUCK constant current power supply circuit 30 is connected with the filter rectifying circuit 10 and is used for converting high-voltage direct current into constant current to be supplied to the lighting module 70 of the fan lamp 200; the driving control circuit 40 is connected to the three-phase motor driving circuit 60, and is configured to control the three-phase motor driving circuit 60 to convert the low-voltage direct current into a three-phase alternating current to drive the fan 80 of the fan lamp 200 to rotate; the sampling circuit 50 is connected between the filter rectification circuit 10 and the driving control circuit 40, and is used for detecting the mains supply alternating current and outputting a rising edge signal or a falling edge signal, so that the driving control circuit 40 can detect and identify the rising edge signal or the falling edge signal output by the sampling circuit 50, and output a control signal to the three-phase motor driving circuit 60 and the BUCK constant current power supply circuit 30 to drive the fan 80 of the fan lamp 200 to rotate and adjust the on/off of the lighting module 70.

Specifically, the filter rectification circuit 10 includes a fuse 11 connected to the commercial ac power, a first filter circuit 12, a bridge rectification circuit 13 connected to the first filter circuit 12, and a second filter circuit 14 connected to the bridge rectification circuit 13. As is well known, the commercial ac power is transmitted to the wall switch 300 through the ground line (PE line), the power zero line (hereinafter, referred to as N line) and the power live line (hereinafter, referred to as L line), and then the on/off of the fan lamp control circuit 100 is controlled via the wall switch 300, so as to control the fan lamp 200 to operate. The fuse 11 is connected to the L-line, and is also called a current fuse, and when the current abnormally rises to a certain height and heat, the fuse 11 can fuse itself to cut off the current, thereby playing a role in protecting the safe operation of the fan lamp control circuit 100.

In this embodiment, the bridge rectifier circuit 13 is composed of diodes D1 to D4, and is configured to rectify ac power into dc power; the second filter circuit 14 is a pi-type filter circuit composed of a capacitor C1, an inductor L, and a capacitor C2, and two ends of the pi-type filter circuit are respectively connected to two output ends of the bridge rectifier circuit 13 for filtering ripples in the direct current output by the bridge rectifier circuit 13, so that the ripple coefficient of the output direct current is reduced, and the waveform becomes smoother.

The DC-DC constant voltage power supply circuit 20 and the BUCK constant current power supply circuit 30 are both connected to the second filter circuit 14, and are configured to receive the high voltage direct current after passing through the second filter circuit 14, so as to supply the three-phase motor driving circuit 60 and the lighting module 70. The DC-DC constant voltage power supply circuit 20 corresponds to control of the fan 80 of the fan lamp 200, and the BUCK constant current power supply circuit 30 corresponds to control of the lighting module 70, and hereinafter, rotation control of the fan 80 will be described first, and then control of the lighting module 70 will be described.

As shown in fig. 3, a schematic diagram of a circuit for driving the fan 80 to rotate by the three-phase motor driving circuit 60 is shown. From this circuit schematic it can be seen that: the utility model discloses a fan lamp 200 adopts no hall device brushless motor and controller, and no hall device brushless motor and controller are when starting, and the controller exports the extremely short pulse of time earlier, through software algorithm, confirms the position of rotor, and drive control circuit 40 drives no hall device brushless motor according to the positional information that detects and rotates. For convenience of description, the "hall-element-free brushless motor" will be directly abbreviated as "brushless motor" hereinafter.

In fig. 3, DC is low-voltage direct current processed by the DC-DC constant voltage power supply circuit 20; the resistor R5 and the resistor R6 are used for detecting the voltage of the low-voltage direct current, the detected voltage is generally not more than 30V, and the controller is prevented from being damaged due to the back voltage of the brushless motor; the drive control circuit 40 is used for controlling the on-off of the switching tubes Q1, Q2, Q3, Q4, Q5 and Q6 so as to convert the low-voltage direct current into three-phase alternating current to drive the brushless motor to rotate; the brushless motor is composed of three coils of soft magnetic material wound by L1, L2 and L3, the rotor is composed of permanent magnetic material, at least N, S one pair of poles, or more than two pairs of poles, can be designed according to requirements, and figure 3 is two pairs of poles.

At this moment, the operating principle of brushless motor does: step 1, when pins AH, BL of the driving control circuit 40 output high level, AL, BH, CH, CL output low level, at this time, the switching tubes Q1, Q4 are turned on, other switching tubes are turned off, and the current is from the positive pole of the DC power supply → Q1 → L1 → L2 → Q4 → the negative pole of the DC power supply; step 2, when the pins BH and CL of the driving control circuit 40 output high levels, AH, AL, BL, and CH output low levels, at this time, the switching tubes Q3 and Q6 are turned on, and the other switching tubes are turned off, so that the current flows from the positive pole of the DC power supply → Q3 → L2 → L3 → Q6 → the negative pole of the DC power supply; and 3, when the pins CH and AL of the drive control circuit 40 output high levels, AH, BH, BL and CL output low levels, at the moment, the switching tubes Q5 and Q2 are switched on, other switching tubes are switched off, and the current is conducted from the positive pole of the DC power supply → Q5 → L3 → L1 → Q2 → the negative pole of the DC power supply. The three steps are performed according to a certain frequency cycle according to requirements, so that the brushless motor can smoothly rotate, and then the fan 80 can be driven to rotate.

When the fan 80 rotates at a high speed, if the wall switch 300 is turned off, the dc power supplied to the brushless motor is turned off, and the fan 80 is generally stopped in 15 to 30 seconds due to inertia. If the brushless motor is powered on again after the power failure, the controller is powered on again, and the position of the rotor cannot be determined, if the brushless motor is started by trial and error, the brushless motor generates back pressure, the brushless motor exceeds the input protection voltage of the motor and enters a protection state, and the fan 80 is stopped to output pulses for starting. Therefore, the utility model discloses be connected with first electric capacity C and first zener diode Z1 between DC-DC constant voltage power supply circuit 20 and three-phase motor drive circuit 60, wherein, first electric capacity C is used for filtering, can provide the heavy current for three-phase motor drive circuit 60 in the twinkling of an eye; the first voltage stabilizing diode Z1 is connected in parallel with the first capacitor C and is used for absorbing the back voltage generated by the brushless motor when the brushless motor generates the back voltage, so that when the brushless motor is forcibly started at a high speed, the voltage at two ends of the direct current cannot exceed the input protection voltage of the motor and enter a protection state, and the brushless motor can be normally started. Preferably, the regulation value of the first regulation diode Z1 is usually chosen to be 27V.

The lighting module 70 is connected to an output terminal of the BUCK constant current power supply circuit 30, and an input terminal of the BUCK constant current power supply circuit 30 is connected to an output terminal of the second filter circuit 14, and is configured to convert the high-voltage direct current output by the second filter circuit 14 into a constant-current for the lighting module 70. The input end of the BUCK constant current power supply circuit 30 is further connected to the driving control circuit 40, and is configured to receive the control signal output by the driving control circuit 40, and control the lighting module 70 to turn on, turn off, and adjust the light according to the control signal. The specific control circuit of the BUCK constant current power supply circuit 30 can be designed according to practical situations, as long as the control circuit can achieve the effects of controlling the on/off and dimming of the lighting module 70, and is not limited herein.

The utility model discloses an only enumerate the example of BUCK constant current power supply circuit 30 all the way of drive control circuit 40 control in FIG. 2, nevertheless do not represent drive control circuit 40 and can only control BUCK constant current power supply circuit 30 all the way, on the contrary, the utility model discloses a drive control circuit 40 can set up a plurality of delivery outlets and control multichannel BUCK constant current power supply circuit 30 to realize control respectively and simultaneous control to a plurality of lighting module 70.

The sampling circuit 50 is connected between the filter rectification circuit 10 and the drive control circuit 40, and is used for detecting the mains supply alternating current and outputting a rising edge signal or a falling edge signal, so that the drive control circuit 40 can detect and identify the rising edge signal or the falling edge signal output by the sampling circuit 50, and output a control signal to the three-phase motor drive circuit 60 and the BUCK constant current power supply circuit 30 to drive the fan 80 to rotate and adjust the on/off of the lighting module 70. Specifically, the sampling circuit 50 is connected in parallel between the first filter circuit 12 and the bridge rectifier circuit 13, and both ends are connected to the L line and the N line, respectively. The sampling circuit 50 comprises a first resistor R1 and a second resistor R2 which are connected in series, and the first resistor R1 and the second resistor R2 are used for collecting the voltage value of the mains alternating current.

The sampling circuit 50 further includes a third resistor R3 connected to a common end node of the first resistor R1 and the second resistor R2, a second zener diode Z2 connected to the second resistor R2, and a fourth resistor R4, a filter capacitor C3, and a third zener diode Z3 connected in parallel to each other between the second zener diode Z2 and the drive control circuit 40. The third resistor R3 is used to fine tune the sampled voltage values of the first resistor R1 and the second resistor R2, and the voltage values collected by the first resistor R1 and the second resistor R2 are stepped down by the second zener diode Z2 and the fourth resistor R4, filtered by the filter capacitor C3, and stabilized by the third zener diode Z3, and then a rising edge signal or a falling edge signal is output to the driving control circuit 40.

When the sampling circuit 50 outputs a rising edge signal, it indicates that the mains supply alternating current is accessed and the first filter circuit 12 is powered on; when the sampling circuit 50 outputs a falling edge signal, it indicates that the commercial power ac is not connected and the first filter circuit 12 is powered off. The operating principle of the sampling circuit 50 will be described below: when the sampling circuit 50 outputs a rising edge signal, if the commercial power alternating current is in the last half cycle, i.e. the L-line is energized, there are three energizing loops of the sampling circuit 50, which are: l → R2 → R1 → N, L → R2 → R3 → D4 → N, L → R2 → Z2 → R4// C3// Z3 → D4 → N; if the commercial power ac is in the next half cycle, i.e. the N lines are energized, there are three energizing loops of the sampling loop 50, which are: n → R1 → R2 → L, N → R1 → R3 → D1 → L, N → R1 → Z2 → R4// C3// Z3 → D1 → L; so set up, sampling circuit 50 only need be by the piece hinder, piece hold, zener diode constitutes, has the advantage such as detect fast, reliable and stable, with low costs.

The fan lamp control circuit 100 further includes a low voltage power supply circuit 90 connected to the output terminal of the DC-DC constant voltage power supply circuit 20, wherein the low voltage power supply circuit 90 is configured to convert the low voltage DC output by the DC-DC constant voltage power supply circuit 20 into a supply voltage VCC to supply to the driving control circuit 40, so that the driving control circuit 40 can operate normally, and thus the driving control circuit 40 can drive the fan 80 to rotate and adjust the lighting, lighting and dimming of the lighting module 70 according to the rising edge signal or the falling edge signal.

As shown in fig. 2, the fan lamp control circuit 100 further includes a buzzer 21 connected to the driving control circuit 40, and the buzzer 21 is configured to send a prompt signal to a user after the driving control circuit 40 outputs a control signal, so that the user knows that the fan lamp control circuit 100 is in an operating state. The "prompt signal" as used herein may be a light-emitting signal, such as a flashing light; it may also be a speech signal, such as: the voice prompt or the prompt sound of 'dripping' -can be designed according to the preference of the client.

The working principle of the fan lamp control circuit 100 of the present invention will be described as follows: firstly, commercial power alternating current is rectified into high-voltage direct current through a fuse 11, a first filter circuit 12 and a bridge rectifier circuit 13, and the high-voltage direct current is filtered by a pi-type filter circuit 14 and then is supplied to a DC-DC constant voltage power supply circuit 20 and a BUCK constant current power supply circuit 30. Then, the DC-DC constant voltage power supply circuit 20 converts the high voltage DC power into 24V low voltage DC power to be supplied to the three-phase motor driving circuit 60, and the three-phase motor driving circuit 60 converts the 24V low voltage DC power into three-phase ac power to be supplied to the brushless motor under the control of the driving control circuit 40, so as to drive the fan 80 to rotate, and at the same time, the 24V low voltage DC power is converted into the supply voltage VCC to be supplied to the driving control circuit 40 through the low voltage power supply circuit 90. In addition, the BUCK constant current power supply circuit 30 converts the high voltage direct current into a constant current power to supply to the lighting module 70 to light the lighting module 70, so that the fan 80 and the lighting module 70 can be started as needed.

The driving control circuit 40 is a control center of the whole controller, and mainly has the following functions: 1. detecting and identifying a rising edge signal or a falling edge signal output by the sampling circuit 50, and judging the power failure and the power on of the commercial power alternating current; 2. outputting a control signal to the buzzer 21 to enable the buzzer 21 to send out a prompt signal according to the requirement; 3. the fan 80 is switched on and off and speed-regulated by controlling the three-phase motor driving circuit 60 through AH, AL, BH, BL, CH and CL; 4. meanwhile, a control signal is output to the BUCK constant current power supply circuit 30 through a port P1 so as to control the lighting module 70 to be turned on, turned off and dimmed; further, when the multiple BUCK constant current power supply circuit 30 is provided, a plurality of ports may be output to control the multiple BUCK constant current power supply circuit 30.

As shown in fig. 4, the driving control circuit 40 of the present invention can also adjust the operating states of the fan 80 and the lighting module 70 (simply referred to as a lamp) according to the time interval between the rising edge signal and the falling edge signal. For example, the fan lamp 200 has four operating states, which are "state one", "state two", "state three", and "state four", respectively, wherein in "state one", the fan 80 rotates at a high speed and the lamp is on; in "state two", the fan 80 rotates at a high speed; in the state three, the lamp is on; in "state four", the fan 80 rotates at a low speed. When the wall switch 300 is powered up again within 2 seconds of power off in the state one, the drive control circuit 40 detects that the time interval between the rising edge signal and the falling edge signal is less than 2 seconds, and then controls the fan lamp 200 to enter the state two; when the wall switch 300 is powered up after being powered off for 2 seconds in the state one, the driving control circuit 40 detects that the time interval between the rising edge signal and the falling edge signal is greater than 2 seconds, and controls the fan lamp 200 to maintain the state one.

By analogy, the driving control circuit 40 may control the fan lamp 200 to switch from "state one" to "state two", then from "state two" to "state three", then from "state three" to "state four", and finally from "state four" to "state one" according to the time interval between the rising edge signal and the falling edge signal, thereby forming a closed loop. Of course, the switching between the "state one" and the "state four" is not limited to sequential switching, and may be directly switched from the "state one" to the "state three" or the "state four" according to actual conditions. In addition, the operating states of the fan lamp 200 may be set to only any two or three of them, or may be set to more than two of them, which is not limited herein.

To sum up, the utility model discloses a fan lamp control circuit 100 utilizes sampling circuit 50 to detect and export rising edge or falling edge signal to mains supply alternating current to drive control circuit 40 can detect and discern rising edge or falling edge signal, then output control signal gives three-phase motor drive circuit 60 and BUCK constant current power supply circuit 30, rotates and adjusts lighting out of illumination module 70 with the fan 80 of drive fan lamp 200. Compared with the prior art, the utility model discloses need not the remote controller, can directly utilize wall switch 300 outage back to go up fast and control fan lamp 200, have control convenience, environmental protection, reduced the advantage of the whole machine cost of fan lamp 200 for the product competitiveness is stronger.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A fan lamp control circuit, comprising:

the filter rectifying circuit (10) is used for converting commercial power alternating current into high-voltage direct current;

the DC-DC constant voltage power supply circuit (20) is connected with the filter rectifying circuit (10) and is used for converting high-voltage direct current into low-voltage direct current and supplying the low-voltage direct current to a three-phase motor driving circuit (60) of the fan lamp (200);

the BUCK constant-current power supply circuit (30) is connected with the filtering and rectifying circuit (10) and is used for converting high-voltage direct current into constant-current to be supplied to the lighting module (70) of the fan lamp (200);

the driving control circuit (40) is connected with the three-phase motor driving circuit (60) and is used for controlling the three-phase motor driving circuit (60) to convert low-voltage direct current into three-phase alternating current so as to drive the fan (80) of the fan lamp (200) to rotate; and

the sampling circuit (50) is connected between the filter rectification circuit (10) and the drive control circuit (40) and is used for detecting commercial power alternating current and outputting a rising edge signal or a falling edge signal;

the driving control circuit (40) is further used for detecting and identifying a rising edge signal or a falling edge signal output by the sampling circuit (50), and outputting a control signal to the three-phase motor driving circuit (60) and the BUCK constant current power supply circuit (30) so as to drive a fan (80) of the fan lamp (200) to rotate and adjust the on/off of the lighting module (70).

2. The fan lamp control circuit of claim 1, wherein: a first capacitor (C) and a first voltage stabilizing diode (Z1) are further connected between the DC-DC constant voltage power supply circuit (20) and the three-phase motor driving circuit (60), the first capacitor (C) is used for filtering, and the first voltage stabilizing diode (Z1) is connected with the first capacitor (C) in parallel and used for absorbing the back voltage generated by the motor of the fan lamp (200).

3. The fan lamp control circuit of claim 1, wherein: the filter rectification circuit (10) comprises a first filter circuit (12) connected with commercial power alternating current, a bridge rectification circuit (13) connected with the first filter circuit (12) and a second filter circuit (14) connected with the bridge rectification circuit (13), and the DC-DC constant voltage power supply circuit (20) and the BUCK constant current power supply circuit (30) are connected with the second filter circuit (14).

4. A fan lamp control circuit according to claim 3, wherein: the sampling circuit (50) is connected in parallel between the first filter circuit (12) and the bridge rectifier circuit (13), the sampling circuit (50) includes first resistance (R1) and second resistance (R2) that mutually establish ties, first resistance (R1) and second resistance (R2) are used for gathering the voltage value of commercial power alternating current.

5. The fan lamp control circuit of claim 4, wherein: the sampling circuit (50) further comprises a third resistor (R3) connected to a common end node of the first resistor (R1) and the second resistor (R2), the third resistor (R3) being used for trimming the sampled voltage values of the first resistor (R1) and the second resistor (R2).

6. The fan lamp control circuit of claim 4, wherein: the sampling circuit (50) further comprises a second voltage-stabilizing diode (Z2) connected with the second resistor (R2), and a fourth resistor (R4), a filter capacitor (C3) and a third voltage-stabilizing diode (Z3) which are connected in parallel between the second voltage-stabilizing diode (Z2) and the drive control circuit (40), wherein voltage values acquired by the first resistor (R1) and the second resistor (R2) are subjected to voltage reduction by the second voltage-stabilizing diode (Z2) and the fourth resistor (R4), filtering by the filter capacitor (C3) and voltage stabilization by the third voltage-stabilizing diode (Z3), and then a rising edge signal or a falling edge signal is output.

7. The fan lamp control circuit of claim 6, wherein: when the commercial power alternating current is connected with the first filter circuit (12), the sampling circuit (50) outputs a rising edge signal; when the commercial power alternating current is disconnected from the first filter circuit (12), the sampling circuit (50) outputs a falling edge signal, and the drive control circuit (40) is configured to adjust the rotating speed of the fan (80) and/or the on/off of the lighting module (70) according to the time interval between the rising edge signal and the falling edge signal.

8. The fan lamp control circuit of claim 1, wherein: the fan lamp control circuit (100) further comprises a low-voltage power supply circuit (90) connected with the output end of the DC-DC constant-voltage power supply circuit (20), wherein the low-voltage power supply circuit (90) is used for converting low-voltage direct current output by the DC-DC constant-voltage power supply circuit (20) into power supply voltage to be supplied to the drive control circuit (40).

9. The fan lamp control circuit of claim 1, wherein: the fan lamp control circuit (100) further comprises a buzzer (21) connected with the driving control circuit (40), and the buzzer (21) is configured to send out a prompt signal after the driving control circuit (40) outputs a control signal.

10. A fan lamp, comprising: the fan lamp (200) employs the fan lamp control circuit (100) of any one of claims 1 to 9.