WO2023093435A1

WO2023093435A1 - Control circuit, lighting apparatus, and lighting system

Info

Publication number: WO2023093435A1
Application number: PCT/CN2022/127608
Authority: WO
Inventors: 王耀海
Original assignee: 苏州欧普照明有限公司; 欧普照明股份有限公司
Priority date: 2021-11-25
Filing date: 2022-10-26
Publication date: 2023-06-01

Abstract

Provided in the present application are a control circuit, a lighting apparatus, and a lighting system. The control circuit is applied to a lighting apparatus (200), and comprises a main control circuit (10), an electric motor drive circuit (20), a lighting circuit (30), and a power supply circuit (40) for providing a power source for the control circuit (100), wherein an output end of the main control circuit (10) is respectively connected to an input end of the electric motor drive circuit (20) and an input end of the lighting circuit (30), and the main control circuit (10) adjusts the rotation speed of an electric motor in the lighting apparatus (200) by means of the electric motor drive circuit (20); the lighting circuit (30) comprises a first chip (31) and a second chip (32), and the first chip (31) controls the brightness of the lighting apparatus (200) by detecting the duty ratio of PWM that is output by the main control circuit (10); and the second chip (32) comprises at least two toning circuits with different color temperatures, and the second chip (32) controls the switching of the color temperature of the lighting apparatus (200) by controlling the connection of the toning circuits. Compared with the prior art, the control circuit in the present invention can directly control an electric motor drive circuit and a lighting circuit, such that by means of a main control circuit, the color temperature of a lighting apparatus is adjusted while stepless speed regulation and stepless dimming are implemented.

Description

Control circuit, lighting device and lighting system

This application claims the priority of a Chinese patent application with an application date of November 25, 2021, application number 202111410757.4, and an invention title of "Control Circuit, Lighting Device, and Lighting System", and an application date of November 25, 2021 , the application number is 202122911163.3, and the priority of the Chinese patent application titled "control circuit, lighting device and lighting system", the entire content of which is incorporated in this application by reference.

technical field

The present application relates to the technical field of household appliances, in particular to a control circuit, a lighting device and a lighting system.

Background technique

Fan lamp is a commonly used household appliance. It is a combination of lighting fixtures and fans. It has both the lighting performance of lighting fixtures and the heat dissipation performance of fans. It has become the most common lighting fixture for indoor lighting. It is used in homes, offices, entertainment places, etc. Various occasions have a wide range of applications.

Because the existing fan lamps have many functions to be controlled, they usually use two main control circuits to control the lighting and the motor speed respectively. easy to integrate. Moreover, the existing fan lamp uses an AC asynchronous motor in the function of controlling the motor speed of the fan, so the control aspect is relatively simple, and the stepless speed regulation cannot be performed, and the gear position can only be changed by tapping. In terms of lighting control, most of them are single color temperature and three-color dimming, the function is relatively simple and single, the brightness cannot be adjusted, and it cannot meet consumers' control needs for fan lights.

In view of this, it is necessary to provide a control circuit, lighting device and lighting system to solve the above problems.

Contents of the invention

The first purpose of the present application is to provide an integrated control circuit that can directly control the motor drive circuit and the lighting circuit. The control circuit is simple in design and can adjust the color temperature while realizing stepless speed regulation and stepless dimming.

In order to achieve the above object, the present invention provides a control circuit, which is applied to a lighting device, including a main control circuit, a motor drive circuit, a lighting circuit, and a power circuit that provides power for the control circuit, and the output terminal of the main control circuit connected to the input ends of the motor driving circuit and the lighting circuit respectively, the main control circuit adjusts the speed of the motor in the lighting device through the motor driving circuit, and the lighting circuit includes a first chip and a second chip , the first chip controls the brightness of the lighting device by detecting the duty ratio of the PWM output by the main control circuit; the second chip includes at least two toning circuits with different color temperatures, and the second The chip controls and switches the color temperature of the lighting device by controlling the connection of the color adjustment circuit.

As a further improvement of the present invention, the first chip includes an identification circuit and a first detection circuit, the identification circuit identifies the output signal of the main control circuit, and controls the connection of the first detection circuit; the first The detection circuit detects the duty ratio of the PWM output by the main control circuit to control the brightness of the lighting circuit.

As a further improvement of the present invention, the first chip is signal-connected or electrically connected to the main control circuit, and the second chip is signal-connected to the main control circuit through the first chip.

As a further improvement of the present invention, the motor driving circuit and the lighting circuit are directly connected to the main control circuit through a wiring harness.

As a further improvement of the present invention, the motor is a DC brushless motor, and the motor drive circuit detects the duty cycle of the PWM output by the main control circuit to control the rotational speed of the DC brushless motor.

As a further improvement of the present invention, the control circuit further includes a radio frequency receiving circuit, the output terminal of the radio frequency receiving circuit is connected to the signal input terminal of the main control circuit, and the main control circuit receives the radio frequency receiving circuit circuit signals, and send motor drive signals to the motor drive circuit, and/or send lighting brightness signals and/or color temperature signals to the lighting circuit.

As a further improvement of the present invention, the control circuit further includes a prompt circuit, the input end of the prompt circuit is connected to the output end of the radio frequency receiving circuit, and the output end of the prompt circuit is connected to the main control circuit input connection.

As a further improvement of the present invention, the control circuit further includes a memory circuit, and the motor drive circuit and/or the lighting circuit are connected to the memory circuit; the memory circuit includes a storage circuit and a timing circuit, and the storage circuit It is used to store the working state of the lighting device before it is turned off, the timing circuit is used to record the closing time of the lighting device, the main control circuit compares the closing time with the state switching window time, and according to the comparison result Control switching the working state of the lighting device.

The second object of the present invention is to provide a lighting device with simple structure and low cost.

In order to achieve the above object, the present invention provides an illuminating device, the illuminating device adopts the above-mentioned control circuit.

The third object of the present invention is to provide a lighting system with a simple structure and capable of meeting the diverse needs of users.

To achieve the above object, the present invention provides a lighting system, comprising the above-mentioned lighting device, a first control terminal and/or a second control terminal, the first control terminal is electrically connected to the main control circuit of the lighting device, The second control terminal is signal-connected to the main control circuit of the lighting device, and the lighting system controls the working state of the lighting device through the first control terminal and/or the second control terminal.

As a further improvement of the present invention, the working state of the lighting device includes one or more of the color temperature, brightness and rotational speed of the motor of the lighting device.

As a further improvement of the present invention, the lighting system further includes a memory circuit, the first control terminal and the second control terminal respectively control the working state of the lighting device, and synchronize the lighting device through the memory circuit working status.

As a further improvement of the present invention, the switching sequence of the color temperature of the lighting device is: first color temperature>second color temperature>average value of the first color temperature and the second color temperature.

As a further improvement of the present invention, the first control terminal is a wall switch, and the wall switch is configured to adjust the operation of the lighting device by pressing the number of times the wall switch is pressed and comparing the closing time of the wall switch state.

As a further improvement of the present invention, the second control terminal is a remote controller, and the remote controller is configured to: switch the color temperature of the lighting device by continuously operating the switch button on the remote controller; The brightness adjustment button on the remote controller is used to change the brightness of the lighting device; the wind speed adjustment button on the remote controller is continuously operated to change the speed of the motor of the lighting device; The second control terminal controls the stepless change of the brightness of the lighting device; and/or, the second control terminal controls the stepless change of the rotation speed of the motor of the lighting device.

The beneficial effects of the present invention are: compared with the prior art, the control circuit of the present invention integrates the motor drive circuit and the lighting circuit, directly controls the motor drive circuit and the lighting circuit through a main control circuit, and controls the lighting through the motor drive circuit The rotation speed of the motor in the device controls the color temperature and brightness of the lighting device through the first chip and the second chip, and realizes stepless speed regulation and stepless brightness adjustment of the lighting device while adjusting the color temperature to meet the needs of diversified functions of the lighting device. In addition, through the integrated design, the relay and part of the filter and rectifier circuit are removed, which simplifies the structure of the control circuit and reduces the cost.

Description of drawings

The technical solutions and other beneficial effects of the present application will be apparent through the detailed description of the specific embodiments of the present application below in conjunction with the accompanying drawings.

FIG. 1 is a schematic diagram of a control circuit of a preferred embodiment of the present invention.

Fig. 2 is a circuit diagram of a control circuit of a preferred embodiment of the present invention.

Fig. 3 is a circuit diagram of a power supply circuit in a preferred embodiment of the present invention.

FIG. 4 is a circuit diagram of an auxiliary source circuit in a preferred embodiment of the present invention.

FIG. 5 is a circuit diagram of a radio frequency receiving circuit according to a preferred embodiment of the present invention.

Fig. 6 is a circuit diagram of a prompt circuit in a preferred embodiment of the present invention.

FIG. 7 is a circuit diagram of a motor drive circuit and a main control circuit in a preferred embodiment of the present invention.

Fig. 8 is a circuit diagram of a lighting circuit in a preferred embodiment of the present invention.

Fig. 9 is a circuit diagram of a toning circuit in a preferred embodiment of the present invention.

Fig. 10 is a perspective view of a lighting device according to a preferred embodiment of the present invention.

Fig. 11 is a schematic frame diagram of a lighting system according to a preferred embodiment of the present invention.

Fig. 12 is a control diagram of the first control terminal of the lighting system in Fig. 11 .

Fig. 13 is a control diagram of the second control terminal of the lighting system in Fig. 11 .

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Here, it should be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and/or processing steps closely related to the solution of the present invention are shown in the drawings, and the steps related to the present invention are omitted. Other details that don't really matter.

Additionally, it should be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also Other elements not expressly listed, or inherent to the process, method, article, or apparatus are also included.

Please refer to FIGS. 1-9 , which is a control circuit 100 of a preferred embodiment of the present invention. The control circuit 100 is applied to a lighting device 200 to control the rotation of the motor of the lighting device 200 and adjust the brightness and color temperature of the lighting device 200. . The control circuit 100 includes a main control circuit 10 , a motor drive circuit 20 , a lighting circuit 30 and a power circuit 40 for providing power to the control circuit 100 .

The power supply circuit 40 includes an EMI circuit 41 , a rectification circuit 42 and a switch circuit 43 . The EMI circuit 41 is used to suppress the interference of external devices caused by induction and radiation, prevent mutual interference of peripheral electronic products, improve the immunity of the lighting device 200 , and ensure the working stability of the lighting device 200 . The rectification circuit 42 converts the AC voltage into a DC voltage after bridge rectification. The output terminal of the rectified power supply circuit 40 is directly connected to the lighting circuit 30 , and the lighting circuit 30 supplies power to the light source assembly 240 in the lighting device 200 by stepping down the rectified high voltage to a constant current through an inductor. In a preferred embodiment of the present invention, the light source assembly 240 is an LED lamp bead, and in other embodiments, the light source assembly 240 can also be other light-emitting assemblies such as bulbs, fluorescent lamps, light strips or light sheets. The present invention is not limited thereto. The output end of the rectified power supply circuit 40 is electrically connected to the input end of the motor drive circuit 20 and the auxiliary circuit 44 respectively through the switch circuit 43, so that the high voltage after rectification is given to the motor drive circuit 20 and the constant output 24V through the transformer. The auxiliary circuit 44 supplies power. The auxiliary circuit 44 steps down the 24V to 5V to supply power to the main control circuit 10 . That is, the power supply system of the main control circuit 10 is 5V to reduce the power consumption of the control circuit 100 .

The output ends of the main control circuit 10 are respectively connected to the input ends of the motor drive circuit 20 and the lighting circuit 30, and the main control circuit 10 adjusts the speed of the motor in the lighting device 200 through the motor drive circuit 20 to realize stepless speed regulation of the lighting device 200 . The lighting circuit 30 includes a first chip 31 and a second chip 32. The first chip 31 controls the brightness of the lighting device 200 by detecting the duty cycle of the PWM output by the main control circuit 10. The second chip 32 includes at least two different color temperature chips. Toning circuit, the second chip 32 is used to control and switch the color temperature of the lighting device 200 by controlling the connection of the toning circuit. In this way, the motor drive circuit 20 and the lighting circuit 30 are directly controlled by a main control circuit 10, and the motor drive circuit 20 is used to control the speed of the motor in the lighting device 200, thereby realizing stepless speed regulation and stepless dimming of the lighting device 200 while adjusting the color temperature . The color temperature and brightness of the illuminating device 200 are controlled by the first chip 31 and the second chip 32 to reduce the use of relays, meet the requirements of the diversified functions of the illuminating device 200 and reduce the cost of the illuminating device 200 .

In a preferred embodiment of the present invention, the main control circuit 10 is included in the motor drive circuit 20, and the main control circuit 10 in the motor drive circuit 20 controls the motor drive circuit 20 while also controlling the lighting circuit 30, so as to reduce the number of lighting circuits. 30 in the design of the main control circuit 10. In other embodiments, the main control circuit 10 can also be included in the lighting circuit 30, or the main control circuit 10 can also be set separately. The present invention is not limited thereto. A main control circuit 10 can control the motor driving circuit 20 and at the same time control the lighting circuit 30 to reduce the number of relays and AC/DC filtering and rectifying circuits, thereby achieving better cost. Through the integrated design of the motor drive circuit 20 and the lighting circuit 30, the color temperature and brightness of the lighting device 200 and the speed of the motor of the lighting device 200 can be directly controlled by the main control circuit 10, so as to simplify the structure of the control circuit 100 and reduce the cost.

In an optional embodiment of the present invention, the main control circuit 10 can be a programmable circuit module, and several I0 ports are set by programming the chip of the main control circuit 10 to realize output and input of different control signals. Those skilled in the art can perform corresponding programming procedures according to the specific conditions of the circuit structure, which is not limited in the present invention.

In an optional embodiment of the present invention, the control circuit 100 also includes a radio frequency receiving circuit 50, the output end of the radio frequency receiving circuit 50 is connected to the signal input end of the main control circuit 10, and the main control circuit 10 receives the radio frequency receiving circuit 50 signal, and send the motor driving signal to the motor driving circuit 20, and/or send the lighting brightness signal and/or color temperature signal to the lighting circuit 30. That is, the radio frequency receiving circuit 50 is signal-connected with the main control circuit 10 , and is connected with the motor drive circuit 20 and/or the lighting circuit 30 through the main control circuit 10 . According to the signal from the radio frequency receiving circuit 50 , the main control circuit 10 can send a motor driving signal to the motor driving circuit 20 or a lighting brightness signal or a color temperature signal to the lighting circuit 30 alone, or choose any combination of signals to send. The radio frequency receiving circuit 50 can receive radio frequency signals such as WIFI and Bluetooth, and convert the radio frequency signal into a digital signal and output it to the main control circuit 10, and then control the motor speed of the lighting device 200 and the speed of the lighting device 200 through the main control circuit 10. Color Temperature and Brightness In a preferred embodiment, the radio frequency receiving circuit 50 uses a frequency band of 433.92Mhz to receive signals from the remote control. In other embodiments, other frequency bands may also be used, which is not limited in the present invention. By setting the wireless radio frequency receiving circuit 50, the remote control of the lighting device 200 is improved, and the user's convenience is improved.

Optionally, the control circuit 100 further includes a prompt circuit 60 , the input end of the prompt circuit 60 is connected to the output end of the radio frequency receiving circuit 50 , and the output end of the prompt circuit 60 is connected to the input end of the main control circuit 10 . Preferably, the prompt circuit 60 is a buzzer, and the buzzer is connected with the radio frequency receiving circuit 50 and the main control circuit 10 for signals. When the buzzer receives a wireless radio frequency signal, the buzzer emits a "beep" sound to prompt the user, and executes the corresponding function.

Further, the motor of the lighting device 200 is a DC brushless motor, and the output end of the motor driving circuit 20 is connected to the three-phase connection terminals of the DC brushless motor. The motor drive circuit 20 drives the MOS tube by detecting the duty ratio of the PWM output by the main control circuit 10 , and then controls the three-phase current of the motor, and further controls the speed of the brushless DC motor. The AC motor of the lighting device 200 is replaced by a brushless DC motor, so that the lighting device 200 has the advantages of small starting current, low noise, and easy speed regulation, and can realize stepless speed regulation.

Further, the lighting device 200 includes a first chip 31 and a second chip 32. The first chip 31 controls the brightness of the lighting device 200 by detecting the duty ratio of the PWM output by the main control circuit 10. The second chip 32 includes at least two Toning circuits with different color temperatures, the second chip 32 can control and switch the color temperature of the lighting device 200 by controlling the connection of the toning circuits. By disposing the first chip 31 and the second chip 32 instead of the relay, the color temperature of the lighting device 200 can be adjusted while stepless dimming of the lighting device 200 can be realized. In addition, the cost of the control circuit 100 can also be reduced by removing the relay.

In an optional embodiment of the present invention, the first chip 31 is signally connected to the radio frequency receiving circuit 50 and the main control circuit 10 respectively. The first chip 31 includes an identification circuit and a first detection circuit. The identification circuit identifies the output signal of the main control circuit 10 and controls the connection of the first detection circuit. After the main control circuit 10 receives the signal from the radio frequency receiving circuit 50, the main control circuit 10 decodes the signal, outputs the corresponding on/off/dimming signal according to the protocol, and controls the connection of the first detection circuit in the first chip 31 . When the recognition circuit of the first chip 31 recognizes a low-level voltage, the first detection circuit is not turned on. When the recognition circuit of the first chip 31 recognizes a high-level voltage, the first detection circuit is turned on. When the recognition circuit of the first chip 31 recognizes the dimming signal, the first detection circuit detects the duty cycle of the PWM output by the main control circuit 10 to output a corresponding current to control the brightness of the lighting circuit 30 . The brightness can be adjusted from 0 to 100%, so as to realize stepless dimming of the lighting device 200.

In another optional embodiment of the present invention, the first chip 31 is electrically connected to the main control circuit 10, and at this time the main control circuit 10 outputs a high-level voltage by default, that is, the first detection circuit is turned on. At this time, the brightness of the lighting device 200 is 100%. When the main control circuit 10 is turned off, the identification circuit of the first chip 31 recognizes a low-level voltage or cannot recognize a level voltage. At this time, the first detection circuit is not turned on, and the brightness of the lighting device 200 is 0, that is, the lighting device 200 The light source assembly 240 is in an off state.

In another optional embodiment of the present invention, the first chip 31 may also implement constant current output control of the lighting device 200 . That is, when the first chip 31 detects an output overvoltage, short circuit, or overtemperature of the lighting device 200 , the first chip 31 can shut down the main control circuit 10 , thereby protecting the lighting device 200 and improving the service life of the lighting device 200 . When the first chip 31 detects that the voltage, current and temperature of the lighting device 200 are normal, the main control circuit 10 can be turned on, so that the lighting device 200 can continue to be used. It can be known that the first chip 31 can also realize the constant current output control of the lighting device 200 in other ways, which is not limited in the present invention.

In an optional embodiment of the present invention, the first chip 31 is signal-connected to the main control circuit 10 , and the second chip 32 is signal-connected to the main control circuit 10 through the first chip 31 . The second chip 32 switches the color temperature of the lighting device 200 by detecting the pin signal of the first chip 31 . By setting the second chip 32 to be signally connected to the main control circuit 10 through the first chip 31 , the design complexity of the lighting circuit 30 is reduced, thereby reducing the cost of the control circuit 100 . In other embodiments, the second chip 32 may also be directly connected to the main control circuit 10 to realize the switching of the color temperature of the lighting device 200 through the signal of the main control circuit 10 , which is not limited in the present invention.

The second chip 32 includes at least two toning circuits with different color temperatures, and the second chip 32 controls and switches the color temperature of the lighting device 200 by controlling the connection of the toning circuits.

In a preferred embodiment of the present invention, the second chip 32 includes two toning circuits of different color temperatures, that is, the second chip 32 is integrated with two thyristors of different color temperatures, including a toning circuit of the first color temperature and a second color temperature. Toning circuit, and the first color temperature is lower than the second color temperature. When a lower color temperature is required, the second chip 32 controls the connection of the toning circuit of the first color temperature, and simultaneously controls the disconnection of the toning circuit of the second color temperature. At this time, the color temperature output by the lighting device 200 is the first color temperature. When an intermediate color temperature is required, the second chip 32 controls the connection of the toning circuit of the first color temperature, and at the same time controls the connection of the toning circuit of the second color temperature. At this time, the color temperature output by the lighting device 200 is the first color temperature and the second color temperature. The average of the sum. When a higher color temperature is required, the second chip 32 controls the disconnection of the toning circuit of the first color temperature, and at the same time controls the connection of the toning circuit of the second color temperature. At this time, the color temperature output by the lighting device 200 is the second color temperature.

Optionally, the control circuit 100 further includes a memory circuit 70 , and the motor drive circuit 20 and/or the lighting circuit 30 are connected to the memory circuit 70 . In other words, the memory circuit 70 may only be connected to the motor drive circuit 20 to memorize the rotation speed of the motor of the lighting device 200; or the memory circuit 70 may be only connected to the first chip 31 in the lighting circuit 30 to memorize the brightness of the lighting device 200; Or the memory circuit 70 can only be connected to the second chip 32 in the lighting circuit 30 to memorize the color temperature of the lighting device 200; or the memory circuit 70 can only be connected to both the first chip 31 and the second chip 32 in the lighting circuit 30, To memorize the brightness and color temperature of the lighting device 200 ; or the memory circuit 70 can be connected to both the motor drive circuit 20 and the lighting circuit 30 to memorize the rotation speed of the motor of the lighting device 200 and the color temperature and brightness of the lighting device 200 . The present invention is not limited thereto.

The memory circuit 70 includes a storage circuit and a timing circuit. The storage circuit is used to store the working state of the lighting device 200 before it is turned off. The timing circuit is used to record the closing time of the lighting device 200. The main control circuit 10 compares the closing time with the state switching window time. , and switch the working state of the lighting device 200 according to the comparison result. The state switching window time can be set by itself, preferably 1 to 2 s. When the turn-off time of the lighting device 200 exceeds the state switching window time, the memory circuit 70 remembers the working state before the lighting device 200 is turned off, and the lighting device 200 turns off. When it is turned on for the first time, it presents the working state of the lighting device 200 before it is turned off. When the off time of the lighting device 200 is less than the state switching window time, when the lighting device 200 is turned on next time, a new working state of the lighting device 200 is presented. The working state includes but not limited to the rotational speed of the motor of the lighting device 200 , the color temperature of the lighting device 200 and the brightness of the lighting device 200 . By setting the memory circuit 70 , no matter whether the first chip 31 is connected to the main control circuit 10 by signal or electrically, the working state of the lighting device 200 can be realized synchronously.

In an optional embodiment of the present invention, the memory circuit 70 is connected to the second chip 32 in the lighting circuit 30 to memorize the color temperature of the lighting device 200 . When the off time of the lighting device 200 exceeds the state switching window time, the memory circuit 70 remembers the color temperature before the lighting device 200 is turned off, and when the lighting device 200 is turned on next time, it presents the color temperature before the lighting device 200 is turned off. When the off time of the illuminating device 200 is less than the state switching window time, when the illuminating device 200 is turned on next time, it will switch to the next color temperature of the illuminating device 200 . Preferably, the order of the color temperature switching is first color temperature>second color temperature>average value of the first color temperature and the second color temperature.

Please refer to FIG. 10 , which is a lighting device 200 in a preferred embodiment of the present invention. In this embodiment, the lighting device 200 is a fan lamp. The device of the light emitting element is not limited in the present invention. For clarity of description, the lighting device 200 in the following description takes a fan lamp as an example for illustration.

The fan lamp includes a ceiling assembly 210 , a suspension assembly 220 , a fan assembly 230 , a light source assembly 240 and a control assembly 250 . The ceiling assembly 210 is used to connect with the installation base, and the installation base is used to hang the fan light, for example, the installation base may be the ceiling of a house. One end of the suspension assembly 220 is accommodated in the ceiling assembly 210 , and the other end is connected to the fan assembly 230 and the light source assembly 240 , and the light source assembly 240 is located on a side of the fan assembly 230 away from the suspension assembly 220 . The control component 250 employs the above-mentioned control circuit 100 . The rotation speed of the motor in the fan assembly 230 and the color temperature and brightness of the light source assembly 240 are controlled by the above-mentioned control circuit 100 . In this embodiment, the control assembly 250 is installed above the fan assembly 230 . In other embodiments, the control assembly 250 may also be installed in other locations, such as in the ceiling assembly 210 , which is not limited in the present invention.

Please refer to Fig. 11-13, which is a lighting system according to a preferred embodiment of the present invention. It is electrically connected with the main control circuit 10 of the lighting device 200, and the second control terminal 320 is connected with the signal of the main control circuit 10 of the lighting device 200. The lighting system controls the lighting device 200 through the first control terminal 310 and/or the second control terminal 320. working status. The working state of the lighting device 200 includes but not limited to the speed of the motor of the lighting device 200 and the color temperature and brightness of the light source assembly 240 in the lighting device 200. The working state of the lighting device 200 can be the speed of the motor, the color temperature and brightness of the light source assembly 240 one or a combination of several.

In an optional embodiment of the present invention, the first control terminal 310 is a wall switch, and the wall switch is electrically connected to the main control circuit 10 of the lighting device 200 . The wall switch is configured to: when the color temperature of the lighting device 200 needs to be adjusted, the color temperature of the lighting device 200 is adjusted by the number of times the wall switch is pressed and the time the wall switch is turned off. When the brightness of the lighting device 200 needs to be adjusted, the wall switch is turned on. At this time, the main control circuit 10 outputs a high-level voltage by default, and the brightness of the lighting device 200 is 100%. When the wall switch is turned off, the identification circuit of the first chip 31 recognizes a low level voltage or no level voltage, and the brightness of the lighting device 200 is 0, that is, the lighting device 200 is turned off. When the rotation speed of the lighting device 200 needs to be adjusted, the wall switch is turned on. At this time, the main control circuit 10 outputs a high-level voltage by default, and the motor of the lighting device 200 is turned on at a preset speed. Turn off the wall switch, at this time the lighting device 200 is turned off, and the rotation speed is zero. Of course, in other embodiments, the wall switch can also be configured to adjust the brightness, color temperature and rotation speed of the lighting device 200 by pressing the number of times the wall switch is pressed and comparing the time when the wall switch is turned off. This principle is the same as that of adjusting the color temperature. , which will not be repeated here.

In an optional embodiment of the present invention, the second control terminal 320 is a remote controller, and the remote controller is signal-connected with the main control circuit 10 of the lighting device 200 . The remote controller is configured to switch the color temperature of the lighting device 200 by continuously operating the switch button on the remote controller. By continuously operating the brightness adjustment button on the remote control, the brightness of the lighting device 200 can be changed, and by continuously operating the wind speed adjustment button on the remote control, the rotation speed of the motor of the lighting device 200 can be changed. It can be known that the change of the brightness of the illuminating device 200 may be a stepless change or a segmented change. The change of the rotational speed of the motor of the lighting device 200 may be stepless or segmented. This application does not limit this. In a preferred embodiment of the present invention, the brightness of the lighting device 200 is controlled by the second control terminal 320 to change steplessly, that is, the brightness of the lighting device 200 can be from 0 to 100%. The second control terminal 320 controls the change of the rotation speed of the motor of the lighting device 200 to be a stepless change, that is, the rotation speed of the motor of the lighting device 200 can be from 0 to 100%. The remote controller is connected to the main control circuit 10 through radio frequency receiving signals, so as to realize stepless speed regulation, stepless brightness adjustment and color temperature switching of the lighting device 200 .

Taking the second control terminal 320 to adjust the brightness as an example, when the main control circuit 10 receives the brightness adjustment signal from the second control terminal 320, the main control circuit 10 decodes the signal, and outputs the corresponding on/off/dimming according to the protocol. signal to control the connection of the first detection circuit in the first chip 31 . When the recognition circuit of the first chip 31 recognizes a low-level voltage, the first detection circuit is not turned on. When the recognition circuit of the first chip 31 recognizes a high-level voltage, the first detection circuit is turned on. When the recognition circuit of the first chip 31 recognizes the dimming signal, the first detection circuit detects the duty cycle of the PWM output by the main control circuit 10 to output a corresponding current to control the brightness of the lighting circuit 30 . The brightness can be adjusted from 0 to 100%, so as to realize stepless dimming of the lighting device 200 . The principle of adjusting the color temperature and rotating speed of the second control terminal 320 is the same as the principle of adjusting the color temperature and rotating speed of the main control circuit 10 itself, and the present invention will not repeat them here.

Optionally, the second control terminal 320 may also be other various terminals or a combination of various terminals, such as a mobile phone, a computer, and the like. The terminal is connected to the control circuit 100 through the radio frequency receiving circuit 50, and the terminal sends a control signal. After receiving the signal sent by the terminal, the radio frequency receiving circuit 50 controls and adjusts the rotation speed of the motor of the lighting device 200 and the color temperature and brightness of the lighting device 200. .

In an optional embodiment, the lighting system includes a memory circuit 70 , and the memory circuit 70 is connected to the first control terminal 310 and also connected to the second control terminal 320 . The working state of the lighting device 200 under the control of the first control terminal 310 and the working state of the lighting device 200 under the control of the second control terminal 320 are respectively memorized by the memory circuit 70, so as to synchronize the operation of the first control terminal 310 and the second control terminal 320. Control, no matter whether the user uses the first control terminal 310 or the second control terminal 320, the user can adjust the rotation speed, brightness and color temperature of the lighting device 200, so as to improve the convenience of the lighting system.

In summary, the control circuit 100 of the present invention integrates the motor drive circuit 20 and the lighting circuit 30 , directly controls the motor drive circuit 20 and the lighting circuit 30 through a main control circuit 10 , and controls the lighting device 200 through the motor drive circuit 20 The rotation speed of the middle motor controls the color temperature and brightness of the lighting device 200 through the first chip 31 and the second chip 32 to realize the stepless speed regulation and stepless brightness adjustment of the lighting device 200 while adjusting the color temperature to meet the diversified functions of the lighting device 200 need. In addition, through the integrated design, the relay and part of the filter and rectifier circuit are removed, which simplifies the structure of the control circuit 100 and reduces the cost.

The above embodiments are only used to illustrate the technical solutions of the present application without limitation. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present application.

Claims

A control circuit, applied to a lighting device (200), including a main control circuit (10), a motor drive circuit (20), a lighting circuit (30) and a power supply circuit ( 40), the output ends of the main control circuit (10) are respectively connected to the input ends of the motor drive circuit (20) and the lighting circuit (30), and the main control circuit (10) is driven by the motor The circuit (20) adjusts the rotational speed of the motor in the lighting device (200), the lighting circuit (30) includes a first chip (31) and a second chip (32), and the first chip (31) passes the detected The duty ratio of the PWM output by the main control circuit (10) to control the brightness of the lighting device (200); the second chip (32) includes at least two toning circuits with different color temperatures, and the second The chip (32) controls and switches the color temperature of the lighting device (200) by controlling the connection of the color adjustment circuit.
The control circuit according to claim 1, wherein the first chip (31) includes an identification circuit and a first detection circuit, the identification circuit identifies the output signal of the main control circuit (10), and controls the The connection of the first detection circuit; the first detection circuit detects the duty cycle of the PWM output by the main control circuit (10) to control the brightness of the lighting circuit (30).
The control circuit according to claim 1, wherein the first chip (31) is signal-connected or electrically connected to the main control circuit (10), and the second chip (32) passes through the first chip ( 31) Signal connection with the main control circuit (10).
The control circuit according to claim 1, wherein the motor driving circuit (20) and the lighting circuit (30) are directly connected to the main control circuit (10) through a wire harness.
The control circuit according to claim 1, wherein the motor is a DC brushless motor, and the motor drive circuit (20) detects the duty ratio of the PWM output by the main control circuit (10) to control the The speed of the brushless DC motor.
The control circuit according to claim 1, wherein the control circuit (100) further comprises a radio frequency receiving circuit (50), and the output terminal of the radio frequency receiving circuit (50) is connected to the main control circuit (10) connected to the signal input terminal, the main control circuit (10) receives the signal of the radio frequency receiving circuit (50), and sends a motor driving signal to the motor driving circuit (20), and/or sends a motor driving signal to the lighting circuit (30) Sending brightness signals and/or color temperature signals of lighting.
The control circuit according to claim 6, wherein the control circuit (100) further comprises a prompt circuit (60), the input terminal of the prompt circuit (60) is connected to the output terminal of the wireless radio frequency receiving circuit (50) connected, and the output terminal of the prompt circuit (60) is connected with the input terminal of the main control circuit (10).
The control circuit according to claim 1, wherein the control circuit (100) further comprises a memory circuit (70), the motor drive circuit (20) and/or the lighting circuit (30) are connected with the memory circuit (70) connection; the memory circuit (70) includes a storage circuit and a timing circuit, the storage circuit is used to store the working state of the lighting device (200) before it is turned off, and the timing circuit is used to record the lighting device (200), the main control circuit (10) compares the length of the off time with the state switching window time, and controls switching of the working state of the lighting device (200) according to the comparison result.
A lighting device, wherein the control circuit (100) according to any one of claims 1-8 is applied.
A lighting system, comprising the lighting device (200) according to claim 9, the first control terminal (310) and/or the second control terminal (320), the first control terminal (310) and the The main control circuit (10) of the lighting device (200) is electrically connected, the second control terminal (320) is connected to the main control circuit (10) of the lighting device (200) in signal, and the lighting system passes through the The first control terminal (310) and/or the second control terminal (320) controls the working state of the lighting device (200).
The lighting system according to claim 10, wherein the working state of the lighting device (200) includes one or more of the color temperature, brightness and rotational speed of the motor of the lighting device (200).
The lighting system according to claim 10, wherein the lighting system further comprises a memory circuit (70), and the first control terminal (310) and the second control terminal (320) respectively control the lighting device ( 200), and synchronize the working state of the lighting device (200) through the memory circuit (70).
The lighting system according to claim 10, wherein the switching sequence of the color temperature of the lighting device (200) is: first color temperature>second color temperature>average value of the first color temperature and the second color temperature.
The lighting system according to claim 10, wherein the first control terminal (310) is a wall switch, and the wall switch is configured to: by comparing the number of times the wall switch is pressed and the closing time of the wall switch, to adjust the working state of the lighting device (200).
The lighting system according to claim 10, wherein the second control terminal (320) is a remote controller, and the remote controller is configured to realize the lighting device by continuously operating the switch button on the remote controller. (200) switching of the color temperature; by continuously operating the brightness adjustment button on the remote controller to realize the change of the brightness of the lighting device (200); by continuously operating the wind speed adjustment button on the remote controller to realize The change of the rotational speed of the motor of the lighting device (200); the second control terminal (320) controls the stepless change of the brightness of the lighting device (200); and/or the second control terminal (320) controls The rotation speed of the motor of the lighting device (200) changes steplessly.