Ceiling fan lamp and control circuit thereof

Abstract

The invention relates to a ceiling fan lamp and a control circuit thereof. The control circuit comprises a first detection unit, a second detection unit, a first control unit and a second control unit. The first detection unit is connected with a first power supply circuit of the fan motor, and sends a first detection signal when detecting that the first power supply circuit is turned into an on state; the second detection unit is connected with a second power supply circuit of the lamp source, and sends a second detection signal when detecting that the second power supply circuit is turned into a switch-on state; the first control unit receives the first detection signal and controls the fan motor to start; the second control unit receives the second detection signal and controls the lamp source to be started; a user can turn on the lamp source only by turning on the lamp switch on the wall or turn on the fan switch on the wall to turn on the fan without finding a remote controller for additional operation, so that the dependence of the user on the remote controller is reduced, and the convenience and user experience of the ceiling fan lamp are improved.

Description

Technical Field

[0001] The present invention belongs to the field of control circuits, and particularly relates to a ceiling fan light and its control circuit. Background Art

[0002] In the existing ceiling fan light control system, a single microcontroller (MCU) is usually used to control the working states of the fan motor and the light source. The microcontroller determines whether to start the fan motor and the light source based on the last recorded working state. When the user turns on the power of the ceiling fan light, the microcontroller controls the ceiling fan light to start and operate according to the last working state. However, this control method has operational limitations and cannot meet the requirement that when the power of the ceiling fan light is turned on, the ceiling fan light can start immediately without relying on the recorded working state. Summary of the Invention

[0003] Aiming at solving at least one of the technical problems in the prior art, the present invention provides a ceiling fan light and its control circuit, which can achieve quick start without a remote controller when the power is turned on.

[0004] In an embodiment of the first aspect of the present invention, a control circuit of a ceiling fan light includes: A first detection unit, which is connected to the first power line of the fan motor of the ceiling fan light, and the first detection unit is used to send a first detection signal when detecting that the first power line changes from a disconnected state to a connected state; A second detection unit, which is connected to the second power line of the light source of the ceiling fan light, and the second detection unit is used to send a second detection signal when detecting that the second power line changes from a disconnected state to a connected state; A first control unit, which is respectively connected to the first detection unit and the fan motor, and the first control unit is used to receive the first detection signal and control the start of the fan motor; A second control unit, which is respectively connected to the second detection unit and the light source, and the second control unit is used to receive the second detection signal and control the start of the light source.

[0005] According to certain embodiments of the first aspect of the present invention, the first control unit includes a first MCU unit and a motor drive unit, the first MCU unit is connected to the motor drive unit, and the motor drive unit is connected to the fan motor.

[0006] According to certain embodiments of the first aspect of the present invention, the second control unit includes a second MCU unit and a light source drive unit, the second MCU unit is connected to the light source drive unit, and the light source drive unit is connected to the light source.

[0007] According to certain embodiments of the first aspect of the present invention, the first power supply line is provided with a motor power supply unit, and the motor power supply unit is respectively connected to the first MCU unit and the motor drive unit.

[0008] According to certain embodiments of the first aspect of the present invention, the second power supply line is provided with a light source power supply unit, and the light source power supply unit is respectively connected to the second MCU unit and the light source drive unit.

[0009] According to certain embodiments of the first aspect of the present invention, the first MCU unit and the second MCU unit are connected through a communication interface.

[0010] According to certain embodiments of the first aspect of the present invention, the control circuit further includes a receiver, the receiver is respectively connected to the first MCU unit and the second MCU unit, the receiver is communicatively connected to a transmitter, and the receiver is configured to receive data sent by the transmitter.

[0011] According to certain embodiments of the first aspect of the present invention, the control circuit further includes a first memory, the first memory is connected to the first MCU unit, and the first memory is used to store the working state information of the fan motor.

[0012] According to certain embodiments of the first aspect of the present invention, the control circuit further includes a second memory, the second memory is connected to the second MCU unit, and the second memory is used to store the working state information of the light source.

[0013] An embodiment of the second aspect of the present invention, a ceiling fan light, includes: a fan switch, a light switch, a fan motor, a light source, and a control circuit of the ceiling fan light as described in the embodiments of the first aspect of the present invention; the fan switch is connected to the first power supply line of the control circuit of the ceiling fan light, the light switch is connected to the second power supply line of the control circuit of the ceiling fan light, the fan motor is connected to the first control unit of the control circuit of the ceiling fan light, and the light source is connected to the second control unit of the control circuit of the ceiling fan light.

[0014] The beneficial effects of the present invention include: two independent control units are provided to control the fan motor and the light source respectively; the power signal of the first power line of the fan motor is detected in real time by the first detection unit, and the power signal of the second power line of the light source is detected in real time by the second detection unit. When the user turns on the fan switch, the first power line changes from the off state to the on state; when it is detected that the first power line changes from the off state to the on state, the first detection unit sends a first detection signal to the first control unit, and the first control unit receives the first detection signal and forces the fan motor to start. When the user turns on the light switch, the second power line changes from the off state to the on state; when it is detected that the second power line changes from the off state to the on state, the second detection unit sends a second detection signal to the first control unit, and the second control unit receives the second detection signal and forces the light source to start. Through the above control circuit of the ceiling fan light, the user can start the light source by simply turning on the light switch on the wall, or start the fan by turning on the fan switch on the wall, without the need to find the remote control for additional operations, reducing the user's dependence on the remote control and improving the convenience and user experience of the ceiling fan light.

[0015] In addition, some of the additional aspects and advantages of the present invention will be given in the following description, some will become apparent from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0016] Figure 1 is the circuit diagram of the control circuit of the ceiling fan light provided by the embodiment of the present application; Figure 2 is the circuit diagram of the ceiling fan light provided by the embodiment of the present application; Figure 3 is the equivalent circuit diagram of the ceiling fan light provided by the embodiment of the present application; Figure 4 is the circuit diagram of the second detection unit, the motor power supply unit and the light source power supply unit provided by the embodiment of the present application; Figure 5 is the circuit diagram of the first detection unit provided by the embodiment of the present application; Figure 6 is the circuit diagram of the first MCU unit provided by the embodiment of the present application; Figure 7 is the circuit diagram of the second MCU unit provided by the embodiment of the present application; Figure 8 and Figure 9 is the circuit diagram of the current amplification unit of the first power line provided by the embodiment of the present application; Figure 10 is the circuit diagram of the motor drive unit provided by the embodiment of the present application; Figure 11It is the circuit diagram of the light source driving unit provided by the embodiment of the present application; Figure 12 It is the circuit diagram of the lamp switch provided by the embodiment of the present application; Figure 13 It is the circuit diagram of the fan switch provided by the embodiment of the present application; Figure 14 It is the circuit diagram of the buzzer unit provided by the embodiment of the present application; Figure 15 It is the circuit diagram of the voltage sampling circuit provided by the embodiment of the present application. Detailed implementation manners

[0017] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present invention in combination with the embodiments and the drawings, so as to fully understand the purpose, scheme and effects of the present invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0018] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to another feature, or indirectly fixed or connected to another feature. In addition, the up, down, left, right, top, bottom, etc. used in the present invention are only relative to the mutual positional relationship of the components of the present invention in the drawings.

[0019] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any combination of one or more of the related listed items.

[0020] In the existing ceiling fan light control system, a single microcontroller (MCU) is usually used to control the working states of the fan motor and the light source. The microcontroller determines whether to start the fan motor and the light source based on the last recorded working state. When the user turns on the power of the ceiling fan light, the microcontroller controls the ceiling fan light to start and operate according to the last recorded working state. However, this control method has operational limitations and cannot meet the requirement that when the power of the ceiling fan light is turned on, the ceiling fan light can start immediately without relying on the recorded working state.

[0021] To solve the above problems, the embodiments of the present invention provide a ceiling fan light and its control circuit.

[0022] The following will further elaborate on the embodiments of the present application in conjunction with the drawings.

[0023] Refer to Figure 2 ,Figure 2 It is the circuit diagram of a ceiling fan light. In an embodiment of the present application, the ceiling fan light includes: a fan switch, a lamp switch, a fan motor, a light source, and a control circuit of the ceiling fan light; the fan switch is connected to the first power line of the control circuit of the ceiling fan light, the lamp switch is connected to the second power line of the control circuit of the ceiling fan light, the fan motor is connected to the first control unit of the control circuit of the ceiling fan light, and the light source is connected to the second control unit of the control circuit of the ceiling fan light.

[0024] Refer to Figure 12 and Figure 13 , Figure 12 It is the circuit diagram of the lamp switch; Figure 13 It is the circuit diagram of the fan switch.

[0025] Refer to Figure 1 , Figure 1 It is the circuit diagram of the control circuit of the ceiling fan light. In an embodiment of the present application, a control circuit of a ceiling fan light includes: a first detection unit, a second detection unit, a first control unit, and a second control unit.

[0026] Wherein, the first detection unit is connected to the first power line of the fan motor of the ceiling fan light, and the first detection unit is configured to send a first detection signal when detecting that the first power line changes from a disconnected state to a connected state. The second detection unit is connected to the second power line of the light source of the ceiling fan light, and the second detection unit is configured to send a second detection signal when detecting that the second power line changes from a disconnected state to a connected state. The first control unit is respectively connected to the first detection unit and the fan motor, and the first control unit is configured to receive the first detection signal and control the fan motor to start. The second control unit is respectively connected to the second detection unit and the light source, and the second control unit is configured to receive the second detection signal and control the light source to start.

[0027] In this embodiment, two independent control units are provided to respectively control the fan motor and the light source; the first detection unit is used to detect the power signal of the first power line of the fan motor in real time, and the second detection unit is used to detect the power signal of the second power line of the light source in real time. When the user turns on the fan switch, the first power line changes from a disconnected state to a connected state; detecting that the first power line changes from a disconnected state to a connected state, the first detection unit sends a first detection signal to the first control unit, and the first control unit receives the first detection signal and forces the fan motor to start. When the user turns on the lamp switch, the second power line changes from a disconnected state to a connected state; detecting that the second power line changes from a disconnected state to a connected state, the second detection unit sends a second detection signal to the first control unit, and the second control unit receives the second detection signal and forces the light source to start.

[0028] Through the above control circuit of the ceiling fan light, users can start the light source by simply turning on the light switch on the wall, or start the fan by turning on the fan switch on the wall, without the need to find the remote control for additional operations, reducing the user's dependence on the remote control and enhancing the convenience and user experience of the ceiling fan light.

[0029] When the ceiling fan light malfunctions or specific operation instructions need to be feedback to the user, the buzzer of the alarm unit emits a beeping sound to give a prompt. Refer to Figure 14 , Figure 14 is the circuit diagram of the buzzer unit.

[0030] Refer to Figure 15 , Figure 15 is the circuit diagram of the voltage sampling circuit. The line voltage is detected through the voltage sampling circuit, enabling the microcontroller to judge the magnitude of the operating voltage to adapt to the usage environment under 120V or 240V voltage and execute the overvoltage protection (OVP) function.

[0031] The first power line is provided with a current amplification unit. Refer to Figure 8 and Figure 9 , Figure 8 and Figure 9 is the circuit diagram of the current amplification unit of the first power line.

[0032] In some embodiments of the present invention, refer to Figure 6 and Figure 10 , Figure 6 is the circuit diagram of the first MCU unit, Figure 10 is the circuit diagram of the motor drive unit. The first control unit includes the first MCU unit and the motor drive unit. The first MCU unit is connected to the motor drive unit, and the motor drive unit is connected to the fan motor. Specifically, the output end of the first MCU unit is connected to the input end of the motor drive unit, and the output end of the motor drive unit is connected to the fan motor.

[0033] The first MCU unit analyzes based on the historical state information of the motor to obtain the current state information of the fan motor; the first MCU unit sends the current state information of the fan motor to the motor drive unit. The motor drive unit receives the current state information of the fan motor, obtains the current control signal of the fan motor according to the current state information of the fan motor, and the motor drive unit sends the current control signal of the fan motor to the fan motor to control the current working state of the fan motor; for example, controlling the power of the fan motor, and the power of the fan motor is determined by the wind speed gear of the fan.

[0034] In some embodiments of the present invention, refer to Figure 7 and Figure 11 , Figure 7It is the circuit diagram of the second MCU unit. Figure 11 It is the circuit diagram of the light source driving unit. The second control unit includes a second MCU unit and a light source driving unit. The second MCU unit is connected to the light source driving unit, and the light source driving unit is connected to the light source. Specifically, the output end of the second MCU unit is connected to the input end of the light source driving unit, and the output end of the light source driving unit is connected to the light source.

[0035] The second MCU unit analyzes the historical status information of the light source to obtain the current status information of the light source; the second MCU unit sends the current status information of the light source to the light source driving unit. The light source driving unit receives the current status information of the light source, obtains the current control signal of the light source according to the current status information of the light source, and the light source driving unit sends the current control signal of the light source to the light source to control the current working state of the light source; for example, multi-light source control, RGB color control, light brightness adjustment, timing control, scene mode, etc.

[0036] In some embodiments of the present invention, refer to Figure 4 and Figure 5 , Figure 4 It is the circuit diagram of the second detection unit, the motor power supply unit and the light source power supply unit; Figure 5 It is the circuit diagram of the first detection unit. The first power line is provided with a motor power supply unit, and the motor power supply unit is respectively connected to the first MCU unit and the motor driving unit. Specifically, the input end of the motor power supply unit is connected to the first detection unit, and the output end of the motor power supply unit is respectively connected to the first MCU unit and the motor driving unit. The current input end of the motor power supply unit is connected to 120V alternating current (AC), converts the high-voltage alternating current into low-voltage direct current, and provides power for the first MCU unit and the motor driving unit through the low-voltage direct current.

[0037] In some embodiments of the present invention, the second power line is provided with a light source power supply unit, and the light source power supply unit is respectively connected to the second MCU unit and the light source driving unit. Specifically, the input end of the light source power supply unit is connected to the second detection unit, and the output end of the light source power supply unit is respectively connected to the second MCU unit and the light source driving unit. The current input end of the light source power supply unit is connected to 120V alternating current (AC), converts the high-voltage alternating current into low-voltage direct current, and provides power for the second MCU unit and the light source driving unit through the low-voltage direct current.

[0038] In some embodiments, refer to Figure 3 , the motor power supply unit and the light source power supply unit can be integrated into the same power supply unit.

[0039] In some embodiments of the present invention, the first MCU unit is connected to the second MCU unit through a communication interface to achieve data interaction between the first MCU unit and the second MCU unit, so as to coordinate the working states of the fan motor and the light source.

[0040] In some embodiments of the present invention, the control circuit further includes a first memory, which is connected to the first MCU unit and is used to store the working state information of the fan motor. On the one hand, the first memory can be a local memory to store the working state information of the fan motor locally for convenient reading. On the other hand, the first memory can be a cloud memory to perform online cloud storage of the working state information of the fan motor, saving local storage space. For example, the power of the fan motor before the last shutdown state can be stored in the first memory. When the fan motor is started again, the power of the fan motor before the last shutdown state is read from the first memory, and the first MCU unit uses the power of the fan motor before the last shutdown state as the current power of the fan motor. The motor drive unit controls the current working state of the fan motor according to the current power of the fan motor.

[0041] In some embodiments of the present invention, the control circuit further includes a second memory, which is connected to the second MCU unit and is used to store the working state information of the light source. On the one hand, the second memory can be a local memory to store the working state information of the light source locally for convenient reading. On the other hand, the second memory can be a cloud memory to perform online cloud storage of the working state information of the light source, saving local storage space. For example, the last working state of the light source can be stored in the second memory. When the light source is started again, the last working state of the light source is read from the second memory, and the second MCU unit uses the last working state of the light source as the current working state data of the light source. The light source drive unit controls the current working state of the light source according to the current working state data of the light source.

[0042] In some embodiments of the present invention, the control circuit further includes a receiver, which is respectively connected to the first MCU unit and the second MCU unit, and the receiver is communicatively connected to a transmitter. The receiver is used to receive the data sent by the transmitter.

[0043] The receiver is connected to the first memory and the second memory.

[0044] Send a motor start command through the transmitter. The first MCU unit reads the power of the fan motor before the previous shutdown state from the first memory. The first MCU unit obtains the current power of the fan motor based on the power of the fan motor before the previous shutdown state, and sends the current power of the fan motor to the motor drive unit. The motor drive unit obtains the current control signal of the fan motor based on the current power of the fan motor, and controls the current working state of the fan motor according to the current control signal of the fan motor. Send a light source start command through the transmitter. The second MCU unit reads the previous working state of the light source through the memory. The second MCU unit obtains the current working state data of the light source by reading the previous working state of the light source from the second memory, and sends the current working state data of the light source to the light source drive unit. The light source drive unit obtains the current control signal of the light source based on the current working state data of the light source, and controls the current working state of the light source according to the current control signal of the light source.

[0045] The first memory and the second memory are connected to the cloud server. At this time, the first memory and the second memory are cloud memories.

[0046] The cloud server reads the power of the fan motor before the previous shutdown state from the first memory, and sends the power of the fan motor before the previous shutdown state through the cloud server. The first MCU unit receives the power of the fan motor before the previous shutdown state through the receiver. The first MCU unit obtains the current power of the fan motor based on the power of the fan motor before the previous shutdown state, and sends the current power of the fan motor to the motor drive unit. The motor drive unit obtains the current control signal of the fan motor based on the current power of the fan motor, and controls the current working state of the fan motor according to the current control signal of the fan motor. The cloud server reads the previous working state of the light source from the second memory, and sends the previous working state of the light source through the cloud server. The second MCU unit receives the previous working state of the light source through the receiver. The second MCU unit obtains the current working state data of the light source based on the previous working state of the light source, and sends the current working state data of the light source to the light source drive unit. The light source drive unit obtains the current control signal of the light source based on the current working state data of the light source, and controls the current working state of the light source according to the current control signal of the light source.

[0047] It should be noted that even if the power of the fan motor before the previous shutdown state is 0 (i.e., the fan motor is turned off), when the first detection unit detects that the first power line changes from the disconnected state to the connected state (i.e., the fan switch is turned on), after the first MCU unit receives the first detection signal, it causes the motor drive unit to control the fan motor to start and the fan runs to blow air.

[0048] Similarly, even if the previous state of the light source is the off state, when the second detection unit detects that the second power line changes from the disconnected state to the connected state (i.e., the light switch is turned on), after the second MCU unit receives the second detection signal, it causes the light source driving unit to control the light source to start, and the light source emits light.

[0049] As described above, these are only the preferred embodiments of the present invention. The present invention is not limited to the above-mentioned embodiments. As long as it achieves the technical effects of the present invention by the same means, any modifications, equivalent replacements, improvements, etc., made within the spirit and principle of the present disclosure shall be included within the scope of protection of the present disclosure. All of them shall belong to the scope of protection of the present invention. Within the scope of protection of the present invention, various different modifications and changes can be made to its technical solutions and / or implementation manners.

Claims

1. A control circuit for a ceiling fan light, characterized in that, Comprising: A first detection unit, the first detection unit being connected to a first power line of a fan motor of a ceiling fan light, the first detection unit being configured to send a first detection signal when detecting that the first power line changes from a disconnected state to a connected state; A second detection unit, the second detection unit being connected to a second power line of a light source of the ceiling fan light, the second detection unit being configured to send a second detection signal when detecting that the second power line changes from a disconnected state to a connected state; A first control unit, the first control unit being respectively connected to the first detection unit and the fan motor, the first control unit being configured to receive the first detection signal and control the fan motor to start; A second control unit, the second control unit being respectively connected to the second detection unit and the light source, the second control unit being configured to receive the second detection signal and control the light source to start.

2. The control circuit of the ceiling fan light according to claim 1, characterized in that, The first control unit includes a first MCU unit and a motor drive unit, the first MCU unit is connected to the motor drive unit, and the motor drive unit is connected to the fan motor.

3. The control circuit of the ceiling fan light according to claim 2, characterized in that, The second control unit includes a second MCU unit and a light source drive unit, the second MCU unit is connected to the light source drive unit, and the light source drive unit is connected to the light source.

4. The control circuit of the ceiling fan light according to claim 2, characterized in that, The first power line is provided with a motor power supply unit, and the motor power supply unit is respectively connected to the first MCU unit and the motor drive unit.

5. The control circuit of the ceiling fan light according to claim 3, characterized in that, The second power line is provided with a light source power supply unit, and the light source power supply unit is respectively connected to the second MCU unit and the light source drive unit.

6. The control circuit of the ceiling fan light according to claim 3, wherein The first MCU unit is connected to the second MCU unit through a communication interface.

7. The control circuit of the ceiling fan light according to claim 3, wherein The control circuit further includes a receiver, the receiver is respectively connected to the first MCU unit and the second MCU unit, the receiver is communicatively connected to a transmitter, and the receiver is configured to receive data sent by the transmitter.

8. The control circuit of the ceiling fan light according to claim 2, wherein The control circuit further includes a first memory, the first memory is connected to the first MCU unit, and the first memory is configured to store the working state information of the fan motor.

9. The control circuit of the ceiling fan light according to claim 3, characterized in that, The control circuit further includes a second memory, the second memory is connected to the second MCU unit, and the second memory is configured to store the working state information of the light source.

10. A ceiling fan light, characterized in that Comprising: a fan switch, a light switch, a fan motor, a light source, and a control circuit of the ceiling fan light according to any one of claims 1 to 9; the fan switch is connected to a first power line of the control circuit of the ceiling fan light, the light switch is connected to a second power line of the control circuit of the ceiling fan light, the fan motor is connected to a first control unit of the control circuit of the ceiling fan light, and the light source is connected to a second control unit of the control circuit of the ceiling fan light.

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