Lighting control circuit, PCB and controller thereof

Abstract

The utility model discloses an illumination control circuit, a PCB and a controller thereof. The illumination control circuit comprises a driving input end, a module switching unit, a light-operated processing unit, a color temperature power control unit, a color temperature switching unit, a first light-emitting module and a second light-emitting module. The driving input end is used for sending a power adjusting signal and a module switching signal to the color temperature power control unit and the module switching unit, so that the module switching unit and the color temperature power control unit are matched with each other to adjust the input power of the first light-emitting module and the input power of the second light-emitting module. A color temperature adjusting signal is sent to the color temperature power control unit through the driving input end, so that color temperature switching of multiple modes is realized; besides, the light control processing unit is used for collecting light signals in the environment in real time so as to judge whether the actual environment is in the daytime or at night, the effect of automatically turning off the lamp in the daytime and automatically turning on the lamp at night is achieved, and energy consumption of the lighting lamp is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting switches, in particular to a lighting control circuit, a PCB board and a controller thereof. Background Art

[0002] Currently, color temperature and power adjustment are important functions of lighting lamps. By adjusting color temperature and power, personalized needs of the lighting environment can be achieved. However, the existing lighting control circuit has single functions and complex operations, resulting in a poor user experience.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a lighting control circuit, which can control lighting according to different scenarios and user needs, and can autonomously switch lighting according to day and night.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lighting control circuit includes a driving input end, a module switching unit, a light control processing unit, a color temperature power control unit, a color temperature switching unit, a first light-emitting module and a second light-emitting module, wherein the driving input end is electrically connected to the module switching unit, the light control processing unit, the color temperature power control unit and the color temperature switching unit respectively, the color temperature power control unit is electrically connected to the light control processing unit and the color temperature switching unit respectively, and the module switching unit and the color temperature switching unit are both electrically connected to the first light-emitting module and the second light-emitting module; the driving input end is used to send a control signal to the module switching unit, the color temperature power control unit and the color temperature switching unit; the module switching unit is used to adjust the connection status of the first light-emitting module and the second light-emitting module with the driving input end; the light control processing unit is used to send a light-sensitive signal to the driving input end; the color temperature power control unit is used to adjust the working status of the color temperature switching unit; and the color temperature switching unit is used to adjust the color temperature status of the first light-emitting module and the second light-emitting module.

[0007] In the lighting control circuit, the module switching unit includes a gear switch part and a module switch part, the input end of the gear switch part is respectively connected to the driving input end and the output end of the color temperature power control unit, the output end of the gear switch part is connected to the input end of the module switch part, and the output end of the module switch part is respectively connected to the first light-emitting module and the second light-emitting module.

[0008] In the lighting control circuit, the gear switch unit includes a first switch K1, a first power adjustment unit, and a second power adjustment unit; the module switch unit includes a first field-effect transistor Q1 and a second field-effect transistor Q2. Pin 8 of the first switch K1 is connected to the drive input end, pin 1 of the first switch K1 is connected to the drive input end and the output end of the color temperature power control unit respectively through the first power adjustment unit, pin 4 of the first switch K1 is connected to the drive input end and the output end of the color temperature power control unit respectively through the second power adjustment unit, pin 7 of the first switch K1 is connected to the gate of the first field-effect transistor Q1, and pin 5 of the first switch K1 is connected to the gate of the second field-effect transistor Q2. The drive input end is connected to the drain and gate of the first field-effect transistor Q1 and the second field-effect transistor Q2 respectively. The source of the first field-effect transistor Q1 is connected to the positive terminal of the first light-emitting module, and the source of the second field-effect transistor Q2 is connected to the positive terminal of the second light-emitting module.

[0009] In the lighting control circuit, the color temperature power control unit includes a dip switch K2 and a third power adjustment unit. Pins 7 and 8 of the dip switch K2 are respectively connected to the first power adjustment unit and the second power adjustment unit through the third power adjustment unit. Pins 1, 2, 3, and 4 of the dip switch K2 are grounded. Pin 6 of the dip switch K2 is connected to the drive input end. Pin 5 of the dip switch K2 is connected to the light control processing unit. Pins 9 and 10 of the dip switch K2 are respectively connected to the color temperature switching unit.

[0010] In the lighting control circuit, the light control processing unit includes a first control chip U1, a voltage-stabilized power supply unit and a photosensitive processing unit. The voltage-stabilized power supply unit is respectively connected to pin 5 of the dip switch K2 and pin 5 of the first control chip U1, and the photosensitive processing unit is respectively connected to the drive input end and pin 3 and pin 4 of the first control chip U1.

[0011] In the lighting control circuit, the voltage-stabilized power supply unit includes a first transistor Q5 and a third voltage-stabilizing transistor ZD3; the photosensitive processing unit includes a photosensitive device PD1 and a second transistor Q6; the collector of the first transistor Q5 is connected to pin 5 of the dip switch K2, the base of the first transistor Q5 is connected to the negative electrode of the third voltage-stabilizing transistor ZD3, and the positive electrode of the third voltage-stabilizing transistor ZD3 is grounded; the positive electrode of the photosensitive device PD1 is connected to pin 3 of the first control chip U1, the negative electrode of the photosensitive device PD1 is grounded, the base of the second transistor Q6 is connected to pin 4 of the first control chip U1, the collector of the second transistor Q6 is connected to the drive input end, and the emitter of the second transistor Q6 is grounded.

[0012] In the lighting control circuit, the color temperature switching unit includes a third field-effect transistor Q3 and a fourth field-effect transistor Q4. The gate of the third field-effect transistor Q3 is connected to pin 10 of the dip switch K2, and the gate of the fourth field-effect transistor Q4 is connected to pin 9 of the dip switch K2. The drain of the third field-effect transistor Q3 and the drain of the fourth field-effect transistor Q4 are both connected to the cathode of the first light-emitting module and the second light-emitting module. The source of the third field-effect transistor Q3 and the source of the fourth field-effect transistor Q4 are grounded respectively.

[0013] In the lighting control circuit, the first light-emitting module includes a first warm light part and a first cold light part; the second light-emitting module includes a second warm light part and a second cold light part; the positive electrode of the first warm light part and the positive electrode of the first cold light part are respectively connected to the source of the first field effect transistor Q1, the positive electrode of the second warm light part and the positive electrode of the second cold light part are respectively connected to the source of the second field effect transistor Q2, the negative electrode of the first warm light part and the negative electrode of the second warm light part are respectively connected to the drain of the third field effect transistor Q3, and the negative electrode of the first cold light part and the negative electrode of the second cold light part are respectively connected to the drain of the fourth field effect transistor Q4.

[0014] The present application also provides a PCB board, on which the lighting control circuit as described above is printed.

[0015] The present application also provides a controller, which uses the lighting control circuit as described above to perform operation control.

[0016] Beneficial effects:

[0017] The utility model provides a lighting control circuit, wherein a driving input end supplies power to a module switching unit, a light control processing unit, a color temperature power control unit and a color temperature switching unit, and utilizes the driving input end to send a power adjustment signal and a module switching signal to the color temperature power control unit and the module switching unit, so that the module switching unit and the color temperature power control unit cooperate with each other to adjust the input power of the first light-emitting module and the second light-emitting module, thereby realizing multi-gear light emission of the first light-emitting module and the second light-emitting module; and the driving input end sends a color temperature adjustment signal to the color temperature power control unit, so that the color temperature power control unit controls the on / off state of the color temperature switching unit, thereby realizing the first light-emitting module and the second light-emitting module. The second light-emitting module switches color temperature in multiple modes; in addition, the light control processing unit is used to collect light signals in the environment in real time to determine whether the actual environment is daytime or nighttime, and sends a judgment signal to the drive input end in real time; if the judgment signal indicates daytime, the drive input end stops working, that is, it is prohibited to supply power to the module switching unit, the light control processing unit, the color temperature power control unit and the color temperature switching unit and send any control signal; if the judgment signal indicates nighttime, the drive input end enters the normal working mode; such a setting can effectively reduce the energy consumption of lighting fixtures, and allows users to make choices according to different scenarios and needs, so as to achieve the effect of automatically turning off the lights during the day and automatically turning on the lights at night. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A circuit block diagram of the lighting control circuit provided by the utility model;

[0019] Figure 2 This is a circuit structure diagram of the lighting control circuit provided by the utility model.

[0020] Explanation of the main component symbols: 1-driving input end, 2-module switching unit, 3-light control processing unit, 4-color temperature power control unit, 5-color temperature switching unit, 6-first light-emitting module, 7-second light-emitting module. DETAILED DESCRIPTION

[0021] The present invention provides a lighting control circuit, a PCB board, and a controller thereof. To clarify the purpose, technical solution, and effects of the present invention, the present invention is further described below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are intended only to illustrate the present invention and are not intended to limit the present invention.

[0022] In the description of the present invention, it should be understood that the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0023] See also Figures 1 to 2The utility model provides a lighting control circuit, including a driving input end 1, a module switching unit 2, a light control processing unit 3, a color temperature power control unit 4, a color temperature switching unit 5, a first light-emitting module 6 and a second light-emitting module 7, wherein the driving input end 1 is electrically connected to the module switching unit 2, the light control processing unit 3, the color temperature power control unit 4 and the color temperature switching unit 5 respectively, the color temperature power control unit 4 is electrically connected to the light control processing unit 3 and the color temperature switching unit 5 respectively, the module switching unit 2 and the color temperature switching unit 5 are both electrically connected to the first light-emitting module 6 and the second light-emitting module 7. The second light-emitting module 7 is electrically connected; the driving input end 1 is used to send a control signal to the module switching unit 2, the color temperature power control unit 4 and the color temperature switching unit 5; the module switching unit 2 is used to adjust the access status of the first light-emitting module 6 and the second light-emitting module 7 with the driving input end 1; the light control processing unit 3 is used to send a light-sensitive signal to the driving input end 1; the color temperature power control unit 4 is used to adjust the working status of the color temperature switching unit 5; the color temperature switching unit 5 is used to adjust the color temperature status of the first light-emitting module 6 and the second light-emitting module 7.

[0024] In actual use, the driving input end 1 supplies power to the module switching unit 2, the light control processing unit 3, the color temperature power control unit 4 and the color temperature switching unit 5, and uses the driving input end 1 to send a power adjustment signal and a module switching signal to the color temperature power control unit 4 and the module switching unit 2, so that the module switching unit 2 and the color temperature power control unit 4 cooperate with each other to adjust the input power of the first light-emitting module 6 and the second light-emitting module 7, thereby realizing multi-gear light emission of the first light-emitting module 6 and the second light-emitting module 7; the driving input end 1 sends a color temperature adjustment signal to the color temperature power control unit 4, so that the color temperature power control unit 4 controls the on / off state of the color temperature switching unit 5, thereby realizing the first light-emitting module 6 and the second light-emitting module 7. The second light-emitting module 7 switches color temperature in multiple modes; in addition, the light control processing unit 3 is used to collect light signals in the environment in real time to determine whether the actual environment is daytime or nighttime, and sends a judgment signal to the driving input terminal 1 in real time; if the judgment signal indicates daytime, the driving input terminal 1 stops working, that is, it is prohibited to supply power to the module switching unit 2, the light control processing unit 3, the color temperature power control unit 4 and the color temperature switching unit 5 and send any control signal; if the judgment signal indicates nighttime, the driving input terminal 1 enters the normal working mode; such a setting can effectively reduce the energy consumption of lighting fixtures, and allows users to make choices according to different scenarios and needs, so as to achieve the effect of automatically turning off the lights during the day and automatically turning on the lights at night.

[0025] like Figures 1 to 2As shown, further, the module switching unit 2 includes a gear switch part and a module switch part, the input end of the gear switch part is respectively connected to the driving input end 1 and the output end of the color temperature power control unit 4, the output end of the gear switch part is connected to the input end of the module switch part, and the output end of the module switch part is respectively connected to the first light-emitting module 6 and the second light-emitting module 7; the control signal of the driving input end 1 and the input power of the color temperature power control unit 4 are received through the gear switch part, and the gear switch part adjusts the switching state of the module switch part according to the control signal so that the input power is connected to the first light-emitting module 6 and the second light-emitting module 7 in different switching states. The module switch part can control the first light-emitting module 6 to be connected to the gear switch part, or can control the second light-emitting module 7 to be connected to the gear switch part, or can control the first light-emitting module 6 and the second light-emitting module 7 to be connected to the gear switch part at the same time.

[0026] like Figures 1 to 2As shown, further, the gear switch unit includes a first switch K1, a first power regulation unit and a second power regulation unit; the module switch unit includes a first field effect transistor Q1 and a second field effect transistor Q2, the pin 8 of the first switch K1 is connected to the driving input end 1, the pin 1 of the first switch K1 is connected to the driving input end 1 and the output end of the color temperature power control unit 4 through the first power regulation unit, the pin 4 of the first switch K1 is connected to the driving input end 1 and the output end of the color temperature power control unit 4 through the second power regulation unit, the pin 7 of the first switch K1 is connected to the gate of the first field effect transistor Q1, the Pin 5 of a switch K1 is connected to the gate of the second field effect transistor Q2, the driving input terminal 1 is connected to the drain and gate of the first field effect transistor Q1 and the second field effect transistor Q2 respectively, the source of the first field effect transistor Q1 is connected to the positive terminal of the first light-emitting module 6, and the source of the second field effect transistor Q2 is connected to the positive terminal of the second light-emitting module 7; the first light-emitting module 6 and the second light-emitting module 7 are controlled by the third gear toggle of the first switch K1 to control the switch state, specifically, the driving input terminal 1 outputs a voltage to supply power to the gates of the first field effect transistor Q1 and the second field effect transistor Q2, and the voltage is simultaneously passed through the first field effect transistor Q1 and the second field effect transistor Q2. The source electrode, the first switch K1 controls the gate voltage of the first field effect transistor Q1 and the second field effect transistor Q2 to implement the power switching between the first light-emitting module 6 and the second light-emitting module 7; the pin 1-pin 2, pin 7-pin 8 of the first switch K1 are connected to enable the first field effect transistor Q1 to power the first light-emitting module 6, and the second field effect transistor Q2 is turned off; the pin 2-pin 3, pin 6-pin 7 of the first switch K1 are connected to enable the first field effect transistor Q1 and the second field effect transistor Q2 to be simultaneously turned on to power the first light-emitting module 6 and the second light-emitting module 7; the pin 3-pin 4, pin 5-pin 6 of the first switch K1 are connected to enable the second field effect transistor Q2 to power the second light-emitting module 7 When power is turned on, the first field effect transistor Q1 is closed, and the first power regulation unit and the second power regulation unit are respectively connected to pin 1 and pin 4 of the first switch K1, so as to control the access status of the first power regulation unit and the second power regulation unit through different switch positions of the first switch K1 to adjust the required power size. In addition, the first switch K1 is also used to adjust the access status between the color temperature power control unit 4 and the first power regulation unit and the second power regulation unit, so that the color temperature power control unit 4 cooperates with the first power regulation unit and the second power regulation unit to adjust the input power input to the first light-emitting module 6 and the second light-emitting module 7, thereby adjusting the luminous brightness of the first light-emitting module 6 and the second light-emitting module 7.

[0027] In this embodiment, the first power adjustment unit includes a third resistor R3, and the second power adjustment unit includes a fourth resistor R4.

[0028] like Figures 1 to 2 As shown, further, the color temperature power control unit 4 includes a dip switch K2 and a third power adjustment unit, pins 7 and 8 of the dip switch K2 are respectively connected to the first power adjustment unit and the second power adjustment unit through the third power adjustment unit, pins 1, 2, 3 and 4 of the dip switch K2 are grounded, pin 6 of the dip switch K2 is connected to the drive input end 1, pin 5 of the dip switch K2 is connected to the light control processing unit 3, and pins 9 and 10 of the dip switch K2 are respectively connected to the color temperature switching unit 5; through pins 3, 4, 7 and 8 of the dip switch K2 The resistance value of the third power adjustment unit is controlled to control the input power of the driving input terminal 1, thereby adjusting the access power of the first light-emitting module 6 and the second light-emitting module 7. Specifically, the on and off states between pins 3 and 7 and between pins 4 and 8 are adjusted by the dip switch K2 to implement four different power outputs; the dip switch K2 also sends a switch signal to the color temperature switching unit 5 through pins 9 and 10 to achieve switching between different color temperatures of the first light-emitting module 6 and the second light-emitting module 7; in addition, the dip switch K2 also uses pin 5 to control the use state of the light control processing unit 3, allowing the user to choose whether to use the light sensing function according to actual needs.

[0029] like Figures 1 to 2 As shown, the light control processing unit 3 further includes a first control chip U1, a voltage-regulated power supply unit, and a light-sensing processing unit. The voltage-regulated power supply unit is connected to pin 5 of the DIP switch K2 and pin 5 of the first control chip U1, respectively. The light-sensing processing unit is connected to the drive input terminal 1 and pins 3 and 4 of the first control chip U1, respectively. The operating state of the first control chip is controlled by pin 5 of the DIP switch K2. The voltage-regulated power supply unit obtains the input power of the DIP switch K2 to stably supply power to the first control chip U1, and the light-sensing processing unit is used to obtain light signals from the environment. In a specific implementation, the first control chip U1 samples the light-sensing voltage threshold of the light-sensing processing unit to determine whether it is daytime or nighttime, and then outputs high and low levels to feedback and control the operating state of the drive input terminal 1.

[0030] It should be noted that the first control chip U1 may be a single-chip microcomputer control chip such as PIC10F200 or PIC10F206.

[0031] like Figures 1 to 2As shown, further, the voltage-stabilized power supply unit includes a first transistor Q5 and a third voltage-stabilizing tube ZD3; the photosensitive processing unit includes a photosensitive device PD1 and a second transistor Q6; the collector of the first transistor Q5 is connected to the pin 5 of the dial switch K2, the base of the first transistor Q5 is connected to the negative electrode of the third voltage-stabilizing tube ZD3, and the positive electrode of the third voltage-stabilizing tube ZD3 is grounded; the positive electrode of the photosensitive device PD1 is connected to the pin 3 of the first control chip U1, the negative electrode of the photosensitive device PD1 is grounded, and the base of the second transistor Q6 is connected to the pin 1 of the first control chip U1. Pin 4 is connected, the collector of the second transistor Q6 is connected to the driving input terminal 1, and the emitter of the second transistor Q6 is grounded; the first transistor Q5 and the third voltage regulator ZD3 form a voltage stabilizing circuit to stabilize the voltage input by pin 5 of the dip switch K2, thereby ensuring that the first control chip U1 can operate stably; the light signal threshold voltage is sent to the first control chip U1 through the photosensitive device PD1, so that the first control chip U1 determines whether the environment is daytime or dark, and then sends high and low levels to control the switching state of the second transistor Q6, thereby feeding back the corresponding control signal to the driving input terminal 1.

[0032] In this embodiment, the voltage-stabilized power supply part can be a voltage-stabilized power supply circuit composed of a second diode D2, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a first capacitor C1, a second capacitor C2, a first transistor Q5 and a third voltage-stabilizing diode ZD3; the photosensitive processing part can be a photocontrol processing circuit composed of a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a third capacitor C3, a first control chip U1, a photosensitive device PD1 and a second transistor Q6.

[0033] It should be noted that the photosensitive device PD1 may be a photoresistor.

[0034] like Figures 1 to 2 As shown, further, the color temperature switching unit 5 includes a third field effect transistor Q3 and a fourth field effect transistor Q4, the gate of the third field effect transistor Q3 is connected to the pin 10 of the dip switch K2, the gate of the fourth field effect transistor Q4 is connected to the pin 9 of the dip switch K2, the drain of the third field effect transistor Q3 and the drain of the fourth field effect transistor Q4 are both connected to the cathode of the first light-emitting module 6 and the second light-emitting module 7, and the source of the third field effect transistor Q3 and the source of the fourth field effect transistor Q4 are grounded respectively;

[0035] The connection status of the third field-effect transistor Q3 and the fourth field-effect transistor Q4 is adjusted according to the control signals of pins 1, 2, 9, and 10 of the dip switch K2. Specifically, the gate voltages of the third field-effect transistor Q3 and the fourth field-effect transistor Q4 are controlled by driving input terminal 1 to implement multi-mode color temperature switching by controlling the gate voltages of the third field-effect transistor Q3 and the fourth field-effect transistor Q4. When pins 1 to 10 of the dip switch K2 are connected, the third field-effect transistor Q3 is turned off and the fourth field-effect transistor Q4 is turned on, thereby achieving the first color temperature mode. When pins 1 to 10 of the dip switch K2 are disconnected and pins 2 to 9 are disconnected, both the third field-effect transistor Q3 and the fourth field-effect transistor Q4 are turned on, thereby achieving the second color temperature mode. When pins 2 to 9 of the dip switch K2 are connected, the third field-effect transistor Q3 is turned on and the fourth field-effect transistor Q4 is turned off, thereby achieving the third color temperature mode.

[0036] like Figures 1 to 2 As shown, further, the first light-emitting module 6 includes a first warm light part and a first cold light part; the second light-emitting module 7 includes a second warm light part and a second cold light part; the positive electrode of the first warm light part and the positive electrode of the first cold light part are respectively connected to the source electrode of the first field effect tube Q1, the positive electrode of the second warm light part and the positive electrode of the second cold light part are respectively connected to the source electrode of the second field effect tube Q2, the cathode of the first warm light part and the cathode of the second warm light part are respectively connected to the drain electrode of the third field effect tube Q3, the cathode of the first cold light part and the cathode of the second cold light part are respectively connected to the drain electrode of the fourth field effect tube Q3. The drain of the transistor Q4 should be connected; the color temperature of the first light-emitting module 6 and the second light-emitting module 7 is adjusted by setting the first warm light part, the first cold light part, the second warm light part and the second cold light part, the light-emitting power input to the first warm light part and the first cold light part is adjusted by the first field-effect transistor Q1, the light-emitting power input to the second warm light part and the second cold light part is adjusted by the second field-effect transistor Q2, the access state of the first warm light part and the second warm light part is adjusted by the third field-effect transistor Q3 to achieve the adjustment of the color temperature state, and the access state of the first cold light part and the second cold light part is adjusted by the fourth field-effect transistor Q4 to achieve the adjustment of the color temperature state.

[0037] It should be noted that the first warm light portion and the second warm light portion are both composed of a plurality of warm light LEDs connected in series; the first cold light portion and the second cold light portion are both composed of a plurality of cold light LEDs connected in series.

[0038] The present application also provides a PCB board, on which the lighting control circuit as described above is printed.

[0039] The present application also provides a controller that uses the lighting control circuit described above to perform operation control.

[0040] In summary, the driving input terminal 1 supplies power to the module switching unit 2, the light control processing unit 3, the color temperature power control unit 4 and the color temperature switching unit 5, and the driving input terminal 1 sends a power adjustment signal and a module switching signal to the color temperature power control unit 4 and the module switching unit 2, so that the module switching unit 2 and the color temperature power control unit 4 cooperate with each other to adjust the input power of the first light-emitting module 6 and the second light-emitting module 7, thereby realizing multi-gear light emission of the first light-emitting module 6 and the second light-emitting module 7; the driving input terminal 1 sends a color temperature adjustment signal to the color temperature power control unit 4, so that the color temperature power control unit 4 controls the on / off state of the color temperature switching unit 5, thereby realizing the first light-emitting module 6 and the second light-emitting module 7. The light-emitting module 7 switches color temperature in multiple modes; in addition, the light control processing unit 3 is used to collect light signals in the environment in real time to determine whether the actual environment is daytime or nighttime, and sends a judgment signal to the driving input terminal 1 in real time; if the judgment signal indicates daytime, the driving input terminal 1 stops working, that is, it is prohibited to supply power to the module switching unit 2, the light control processing unit 3, the color temperature power control unit 4 and the color temperature switching unit 5 and send any control signal; if the judgment signal indicates nighttime, the driving input terminal 1 enters the normal working mode; such a setting can effectively reduce the energy consumption of lighting fixtures, and allows users to make choices according to different scenarios and needs, so as to achieve the effect of automatically turning off the lights during the day and automatically turning on the lights at night.

[0041] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A lighting control circuit, characterized in that: The device comprises a driving input end, a module switching unit, a light control processing unit, a color temperature power control unit, a color temperature switching unit, a first light-emitting module, and a second light-emitting module. The driving input end is electrically connected to the module switching unit, the light control processing unit, the color temperature power control unit, and the color temperature switching unit, respectively. The color temperature power control unit is electrically connected to the light control processing unit and the color temperature switching unit, respectively. The module switching unit and the color temperature switching unit are both electrically connected to the first light-emitting module and the second light-emitting module. The driving input end is used to send a control signal to the module switching unit, the color temperature power control unit, and the color temperature switching unit. The module switching unit is used to adjust the connection status of the first light-emitting module and the second light-emitting module with the driving input end; the light control processing unit is used to send a light-sensitive signal to the driving input end; the color temperature power control unit is used to adjust the working state of the color temperature switching unit; the color temperature switching unit is used to adjust the color temperature state of the first light-emitting module and the second light-emitting module.

2. The lighting control circuit according to claim 1, characterized in that: The module switching unit includes a gear switch part and a module switch part, the input end of the gear switch part is respectively connected to the driving input end and the output end of the color temperature power control unit, the output end of the gear switch part is connected to the input end of the module switch part, and the output end of the module switch part is respectively connected to the first light-emitting module and the second light-emitting module.

3. The lighting control circuit according to claim 2, characterized in that: The gear switch unit includes a first switch K1, a first power regulation unit, and a second power regulation unit; the module switch unit includes a first field effect transistor Q1 and a second field effect transistor Q2, pin 8 of the first switch K1 is connected to the driving input end, pin 1 of the first switch K1 is connected to the driving input end and the output end of the color temperature power control unit respectively through the first power regulation unit, pin 4 of the first switch K1 is connected to the driving input end and the output end of the color temperature power control unit respectively through the second power regulation unit, pin 7 of the first switch K1 is connected to the gate of the first field effect transistor Q1, pin 5 of the first switch K1 is connected to the gate of the second field effect transistor Q2, the driving input end is connected to the drain and gate of the first field effect transistor Q1 and the second field effect transistor Q2 respectively, the source of the first field effect transistor Q1 is connected to the positive terminal of the first light-emitting module, and the source of the second field effect transistor Q2 is connected to the positive terminal of the second light-emitting module.

4. The lighting control circuit according to claim 3, characterized in that: The color temperature power control unit includes a dip switch K2 and a third power adjustment unit. Pins 7 and 8 of the dip switch K2 are respectively connected to the first power adjustment unit and the second power adjustment unit through the third power adjustment unit. Pins 1, 2, 3, and 4 of the dip switch K2 are grounded. Pin 6 of the dip switch K2 is connected to the drive input end. Pin 5 of the dip switch K2 is connected to the light control processing unit. Pins 9 and 10 of the dip switch K2 are respectively connected to the color temperature switching unit.

5. The lighting control circuit according to claim 4, characterized in that: The light control processing unit includes a first control chip U1, a voltage-stabilized power supply unit and a photosensitive processing unit. The voltage-stabilized power supply unit is respectively connected to pin 5 of the dip switch K2 and pin 5 of the first control chip U1, and the photosensitive processing unit is respectively connected to the drive input end and pin 3 and pin 4 of the first control chip U1.

6. The lighting control circuit according to claim 5, characterized in that: The voltage-stabilized power supply unit includes a first transistor Q5 and a third voltage-stabilizing transistor ZD3; the photosensitive processing unit includes a photosensitive device PD1 and a second transistor Q6; the collector of the first transistor Q5 is connected to pin 5 of the dip switch K2, the base of the first transistor Q5 is connected to the negative electrode of the third voltage-stabilizing transistor ZD3, and the positive electrode of the third voltage-stabilizing transistor ZD3 is grounded; the positive electrode of the photosensitive device PD1 is connected to pin 3 of the first control chip U1, the negative electrode of the photosensitive device PD1 is grounded, the base of the second transistor Q6 is connected to pin 4 of the first control chip U1, the collector of the second transistor Q6 is connected to the drive input end, and the emitter of the second transistor Q6 is grounded.

7. The lighting control circuit according to claim 4, characterized in that: The color temperature switching unit includes a third field effect transistor Q3 and a fourth field effect transistor Q4. The gate of the third field effect transistor Q3 is connected to the pin 10 of the dip switch K2, and the gate of the fourth field effect transistor Q4 is connected to the pin 9 of the dip switch K2. The drain of the third field effect transistor Q3 and the drain of the fourth field effect transistor Q4 are both connected to the cathode of the first light-emitting module and the second light-emitting module. The source of the third field effect transistor Q3 and the source of the fourth field effect transistor Q4 are grounded respectively.

8. The lighting control circuit according to claim 7, characterized in that: The first light-emitting module includes a first warm light portion and a first cold light portion; the second light-emitting module includes a second warm light portion and a second cold light portion; the positive electrode of the first warm light portion and the positive electrode of the first cold light portion are respectively connected to the source electrode of the first field effect transistor Q1, the positive electrode of the second warm light portion and the positive electrode of the second cold light portion are respectively connected to the source electrode of the second field effect transistor Q2, the cathode of the first warm light portion and the cathode of the second warm light portion are respectively connected to the drain electrode of the third field effect transistor Q3, and the cathode of the first cold light portion and the cathode of the second cold light portion are respectively connected to the drain electrode of the fourth field effect transistor Q4.

9. A PCB board, characterized in that: The lighting control circuit according to any one of claims 1 to 8 is printed on the PCB board.

10. A controller, characterized in that: The controller uses the lighting control circuit according to any one of claims 1 to 8 to perform operation control.

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