CN117641650B - Color mixing control circuit for LED illumination - Google Patents
Color mixing control circuit for LED illumination Download PDFInfo
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- CN117641650B CN117641650B CN202410091210.XA CN202410091210A CN117641650B CN 117641650 B CN117641650 B CN 117641650B CN 202410091210 A CN202410091210 A CN 202410091210A CN 117641650 B CN117641650 B CN 117641650B
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- 238000005286 illumination Methods 0.000 title claims abstract description 28
- 230000033228 biological regulation Effects 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 43
- 238000001514 detection method Methods 0.000 claims description 8
- 230000011664 signaling Effects 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 description 11
- 230000005669 field effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/155—Coordinated control of two or more light sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a color mixing control circuit for LED illumination, which relates to the technical field of LEDs and comprises a power supply processing module, a power supply control module and a power supply control module, wherein the power supply processing module is used for rectifying, filtering, stabilizing voltage and inverting; the intelligent control module is used for signal receiving and module control; the constant current driving module is used for multipath current sharing constant current regulation and rectification; the first LED adjusting module is used for lighting, adjusting independent color temperature and adjusting the color temperature simultaneously with the second LED adjusting module; the second LED adjusting module is used for lighting, adjusting independent color temperature and adjusting the color temperature simultaneously with the first LED adjusting module; and the mode control module is used for triggering the first passage control module and the second passage control module to control the first LED adjusting module and the second LED adjusting module to carry out series color temperature adjustment. The color mixing control circuit for LED illumination improves the power density of driving electric energy, can automatically switch the serial-parallel illumination states, avoids color temperature difference during equal color temperature adjustment, and improves illumination precision.
Description
Technical Field
The invention relates to the technical field of LEDs, in particular to a color mixing control circuit for LED illumination.
Background
Along with the high-speed development of LED technology, the LED module becomes novel green illumination product, the LED module is all far ahead than traditional illumination product in the technical performance aspect such as luminous mechanism, energy-conservation, environmental protection, current LED module can be by a plurality of LED lamps through parallelly connected form constitution, and adopt relevant microcontroller to carry out independent dimming and the color modulation control to parallelly connected LED module, but current LED module can't be according to required color mixing mode, automatic change self series-parallel connection state, when carrying out equal colour temperature adjustment to parallelly connected form LED lamp, the colour temperature difference appears owing to microcontroller output pulse signal's difference easily, reduce the illuminating effect of LED module, and when driving the LED lamp, the drive electric energy power density who leads to the LED lamp easily drops, reduce the work efficiency of LED module, therefore wait to improve.
Disclosure of Invention
The embodiment of the invention provides a color mixing control circuit for LED illumination, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A color mixing control circuit for LED illumination, comprising: the LED driving circuit comprises a power supply processing module, an intelligent control module, a constant current driving module, a first LED adjusting module, a second LED adjusting module, a mode control module, a first passage control module and a second passage control module;
The power supply processing module is connected with the intelligent control module and used for accessing alternating current electric energy, receiving a first pulse signal output by the intelligent control module, rectifying, filtering and stabilizing voltage regulation processing the alternating current electric energy, receiving a second pulse signal output by the intelligent control module, inverting the processed electric energy and outputting the first electric energy;
The intelligent control module is connected with the first LED adjusting module, the second LED adjusting module, the constant current driving module and the mode control module, is used for outputting a first pulse signal and a second pulse signal and controlling the voltage stabilization adjustment and inversion adjustment work of the power supply processing module, is used for outputting a third pulse signal and adjusting the electric energy output by the constant current driving module, is used for outputting a first control signal and controlling the signal transmission work of the mode control module, is used for outputting a first adjusting signal and a second adjusting signal and respectively and independently adjusting the color temperature of the first LED adjusting module and the second LED adjusting module, is used for outputting a third adjusting signal and simultaneously adjusting the color temperature of the first LED adjusting module and the second LED adjusting module, and is used for receiving a first detecting signal output by the first LED adjusting module and a second detecting signal output by the second LED adjusting module and adjusting the duty ratio of the third pulse signal, the first adjusting signal, the second adjusting signal and the third adjusting signal;
the constant current driving module is connected with the power supply processing module and is used for receiving first electric energy, receiving third pulse signals, carrying out multipath current sharing constant current regulation and rectification processing on the input first electric energy and outputting second electric energy and third electric energy respectively;
The first LED adjusting module is connected with the constant current driving module, is used for being connected with the first LED lamp, is used for receiving second electric energy and carrying out LED illumination work, is used for receiving a first adjusting signal and independently adjusting the color temperature of the first LED lamp, is used for receiving a third adjusting signal and adjusting the color temperature of the first LED lamp, and is used for carrying out current detection on the first LED lamp and outputting a first detecting signal;
The second LED adjusting module is connected with the constant current driving module, is used for being connected with the second LED lamp, is used for receiving third electric energy and carrying out LED illumination work, is used for receiving a second adjusting signal and independently adjusting the color temperature of the second LED lamp, is used for receiving the third adjusting signal and adjusting the color temperature of the second LED lamp, and is used for carrying out current detection on the second LED lamp and outputting a second detecting signal;
The mode control module is connected with the first path control module and the second path control module, and is used for receiving the first control signal, transmitting the third pulse signal to the first path control module, carrying out reverse phase processing on the transmitted third pulse signal, outputting a fourth pulse signal and transmitting the fourth pulse signal to the second path control module;
The first channel control module is connected with the second LED adjusting module and the first LED adjusting module and is used for receiving the third pulse signal transmitted by the mode control module and controlling the first LED adjusting module and the second LED adjusting module to carry out serial illumination and stopping the independent color temperature adjusting work of the first LED adjusting module;
a second path control module; and the first LED adjusting module is connected with the second LED adjusting module and used for receiving a fourth pulse signal and controlling the second LED adjusting module and the first LED adjusting module to carry out series illumination and stopping the independent color temperature adjusting work of the second LED adjusting module.
As still further aspects of the invention: the power supply processing module comprises a power supply interface, a voltage processing device, a first power tube, a second power tube and a first transformer; the intelligent control module comprises a first controller;
Preferably, the first end of the power interface is connected with the input end of the voltage processing device, the control end of the voltage processing device, the grid electrode of the first power tube and the grid electrode of the second power tube are respectively connected with the IO4 end, the IO2 end and the IO1 end of the first controller, the drain electrode of the first power tube and the drain electrode of the second power tube are respectively connected with the first end and the second end of the primary side of the first transformer, the output end of the voltage processing device is connected with the third end of the primary side of the first transformer, and the second end of the power interface, the grounding end of the voltage processing device, the source electrode of the first power tube and the source electrode of the second power tube are grounded.
As still further aspects of the invention: the constant current driving module comprises a first capacitor, a second capacitor, a third power tube, a first inductor, a second inductor, a first diode, a second diode, a third diode and a fourth diode;
Preferably, the drain electrode of the third power tube is connected with the first end of the secondary side of the first transformer and the first end of the second capacitor through the first capacitor, the second end of the second capacitor is connected with the source electrode of the third power tube and the cathode of the first diode and is connected with the anode of the third diode through the first inductor, the anode of the fourth diode is connected with the cathode of the second diode and the second end of the secondary side of the first transformer through the second inductor, the cathode of the third diode and the cathode of the fourth diode are respectively connected with the first LED adjusting module and the second LED adjusting module, the anode of the first diode and the anode of the second diode are grounded, and the grid electrode of the third power tube is connected with the IO3 end of the first controller.
As still further aspects of the invention: the first LED adjusting module comprises a third capacitor, a first LED lamp interface, a fourth power tube and a second resistor;
Preferably, the first end of the first LED lamp interface is connected with the cathode of the third diode and grounded through the third capacitor, the second end of the first LED lamp interface is connected with the drain electrode of the fourth power tube, the source electrode of the fourth power tube is connected with the IO11 end of the first controller and grounded through the second resistor, and the grid electrode of the fourth power tube is connected with the IO7 end and the IO8 end of the first controller.
As still further aspects of the invention: the second LED adjusting module comprises a fourth capacitor, a second LED lamp interface, a fifth power tube and a first resistor;
Preferably, the first end of the second LED lamp interface is connected with the cathode of the fourth diode and grounded through the fourth capacitor, the second end of the second LED lamp interface is connected with the drain electrode of the fifth power tube, the source electrode of the fifth power tube is connected with the IO10 end of the first controller and grounded through the first resistor, and the grid electrode of the fifth power tube is connected with the IO6 end and the IO9 end of the first controller.
As still further aspects of the invention: the mode control module comprises a first analog switch and a first inverter;
Preferably, the IN end and the CTRL end of the first analog switch are respectively connected with the IO3 end and the IO5 end of the first controller, the OUT end of the first analog switch is connected with the first path control module and the input end of the first inverter, and the output end of the first inverter is connected with the second path control module.
As still further aspects of the invention: the first path control module comprises a sixth power tube and a first switching tube;
Preferably, the drain electrode of the sixth power tube is connected with the second end of the first LED lamp interface, the source electrode of the sixth power tube is connected with the first end of the second LED lamp interface, the grid electrode of the sixth power tube is connected with the base electrode of the first switch tube and the OUT end of the first analog switch, the emitter electrode of the first switch tube is grounded, and the collector electrode of the first switch tube is connected with the grid electrode of the fourth power tube.
As still further aspects of the invention: the second path control module comprises a seventh power tube and a second switching tube;
preferably, a source electrode of the seventh power tube is connected with the first end of the first LED lamp interface, a drain electrode of the seventh power tube is connected with the second end of the second LED lamp interface, a grid electrode of the seventh power tube is connected with a base electrode of the second switching tube and an output end of the first inverter, an emitter electrode of the second switching tube is grounded, and a collector electrode of the second switching tube is connected with a grid electrode of the fifth power tube.
Compared with the prior art, the invention has the beneficial effects that: the intelligent control module is matched with the power supply processing module and the constant current driving module to provide current-sharing constant current electric energy for the first LED adjusting module and the second LED adjusting module, the driving electric energy power density is improved, the first LED adjusting module and the second LED adjusting module are used for conducting parallel lighting work, at the moment, the intelligent control module can respectively and independently adjust the color temperature of the first LED adjusting module and the color temperature of the second adjusting module, different color temperature control is achieved, when equal color temperature adjustment is needed, the mode control module controls the first path control module and the second path control module to conduct path switching, then serial lighting work of the first LED adjusting module and the second LED adjusting module is completed, color temperature difference caused by signal difference is avoided, and LED lighting precision is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a color mixing control circuit for LED lighting according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of a color mixing control circuit for LED illumination according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a connection of a mode control module according to an embodiment of the present invention.
Fig. 4 is a circuit diagram of a connection of a second path control module according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In one embodiment, referring to fig. 1, a color mixing control circuit for LED illumination includes: the LED power supply comprises a power supply processing module 1, an intelligent control module 2, a constant current driving module 3, a first LED adjusting module 4, a second LED adjusting module 5, a mode control module 6, a first passage control module 7 and a second passage control module 8;
the power supply processing module 1 is connected with the intelligent control module 2 and is used for accessing alternating current electric energy, receiving a first pulse signal output by the intelligent control module 2, rectifying, filtering and stabilizing voltage regulation processing the alternating current electric energy, receiving a second pulse signal output by the intelligent control module 2, inverting the processed electric energy and outputting the first electric energy;
The intelligent control module 2 is connected with the first LED adjusting module 4, the second LED adjusting module 5, the constant current driving module 3 and the mode control module 6, and is used for outputting a first pulse signal and a second pulse signal and controlling the voltage stabilizing adjustment and the inversion adjustment work of the power supply processing module 1, outputting a third pulse signal and adjusting the electric energy output by the constant current driving module 3, outputting a first control signal and controlling the signal transmission work of the mode control module 6, outputting a first adjusting signal and a second adjusting signal and respectively and independently adjusting the color temperature of the first LED adjusting module 4 and the second LED adjusting module 5, outputting a third adjusting signal and simultaneously adjusting the color temperature of the first LED adjusting module 4 and the second adjusting module 5, and receiving a first detecting signal output by the first LED adjusting module 4 and a second detecting signal output by the second LED adjusting module 5 and adjusting the duty ratio of the third pulse signal, the first adjusting signal, the second adjusting signal and the third adjusting signal;
the constant current driving module 3 is connected with the power supply processing module 1 and is used for receiving first electric energy, receiving third pulse signals, carrying out multipath current sharing constant current regulation and rectification processing on the input first electric energy and outputting second electric energy and third electric energy respectively;
The first LED adjusting module 4 is connected with the constant current driving module 3, is used for being connected with the first LED lamp, is used for receiving the second electric energy and carrying out LED illumination work, is used for receiving the first adjusting signal and independently adjusting the color temperature of the first LED lamp, is used for receiving the third adjusting signal and adjusting the color temperature of the first LED lamp, and is used for carrying out current detection on the first LED lamp and outputting a first detecting signal;
The second LED adjusting module 5 is connected with the constant current driving module 3, is used for being connected with the second LED lamp, is used for receiving third electric energy and carrying out LED illumination work, is used for receiving a second adjusting signal and independently adjusting the color temperature of the second LED lamp, is used for receiving the third adjusting signal and adjusting the color temperature of the second LED lamp, and is used for carrying out current detection on the second LED lamp and outputting a second detecting signal;
the mode control module 6 is connected with the first path control module 7 and the second path control module 8, and is used for receiving the first control signal and transmitting a third pulse signal to the first path control module 7, and is used for carrying out reverse phase processing on the transmitted third pulse signal and outputting a fourth pulse signal, and is used for transmitting the fourth pulse signal to the second path control module 8;
The first path control module 7 is connected with the second LED adjusting module 5 and the first LED adjusting module 4, and is used for receiving the third pulse signal transmitted by the mode control module 6 and controlling the first LED adjusting module 4 and the second LED adjusting module 5 to perform serial illumination, and is used for stopping the independent color temperature adjusting work of the first LED adjusting module 4;
A second path control module 8; and the LED control module is connected with the second LED control module 5 and the first LED control module 4, and is used for receiving a fourth pulse signal and controlling the second LED control module 5 and the first LED control module 4 to carry out series illumination and stopping the independent color temperature control work of the second LED control module 5.
In a specific embodiment, the power processing module 1 may adopt a power processing circuit composed of a power interface, a power tube, a voltage processing device, etc., and may access ac power and perform rectifying filtering, voltage stabilizing adjustment and inversion adjustment processing on the ac power; the intelligent control module 2 can adopt a micro-control circuit, integrates a plurality of components such as an arithmetic unit, a controller, a memory, an input/output unit and the like, and realizes the functions of signal processing, data storage, module control, timing control and the like; the constant current driving module 3 can adopt a constant current driving circuit composed of a capacitor, a power tube, an inductor, a diode and the like, and is controlled by the intelligent control module 2 to realize multipath current sharing constant current power supply; the first LED adjusting module 4 may adopt a first LED adjusting circuit composed of a first LED lamp interface, a power tube, a resistor, etc., and may be connected with a first LED lamp, and adjust the color temperature of the first LED lamp, and perform current detection on the first LED lamp; the second LED adjusting module 5 may adopt a second LED adjusting circuit composed of a second LED lamp interface, a power tube, a resistor, etc., and may be connected with a second LED lamp, and adjust the color temperature of the second LED lamp, and perform current detection on the second LED lamp; the mode control module 6 can adopt a mode control circuit consisting of an analog switch and an inverter, and can transmit a third pulse signal output by the intelligent control module 2 and perform inversion processing on the third pulse signal when the same color temperature adjustment is required; the first channel control module 7 can adopt a first channel control circuit formed by a power tube and a triode to control the serial connection work of the first LED adjusting module 4 and the second LED adjusting module 5 and stop the independent color temperature adjusting work of the first LED adjusting module 4; the second path control module 8 may adopt a second path control circuit composed of a power tube and a triode, and control the series connection operation of the second LED adjustment module 5 and the first LED adjustment module 4, and stop the independent color temperature adjustment operation of the second LED adjustment module 5.
In another embodiment, referring to fig. 1, 2, 3 and 4, the power processing module 1 includes a power interface, a voltage processing device, a first power tube Q1, a second power tube Q2 and a first transformer B1; the intelligent control module 2 comprises a first controller U1;
Specifically, the first end of the power interface is connected with the input end of the voltage processing device, the control end of the voltage processing device, the grid electrode of the first power tube Q1 and the grid electrode of the second power tube Q2 are respectively connected with the IO4 end, the IO2 end and the IO1 end of the first controller U1, the drain electrode of the first power tube Q1 and the drain electrode of the second power tube Q2 are respectively connected with the first end and the second end of the primary side of the first transformer B1, the output end of the voltage processing device is connected with the third end of the primary side of the first transformer B1, and the second end of the power interface, the grounding end of the voltage processing device, the source electrode of the first power tube Q1 and the source electrode of the second power tube Q2 are grounded.
In a specific embodiment, the voltage processing device can be composed of a rectifier, a filter and a Boost circuit, so as to realize rectifying filtering and voltage stabilizing adjustment; the first power tube Q1 and the second power tube Q2 can be N-channel field effect tubes, and are matched with the first transformer B1 to carry out inversion adjustment; the first controller U1 can be an STM32 singlechip.
Further, the constant current driving module 3 includes a first capacitor C1, a second capacitor C2, a third power tube Q3, a first inductor L1, a second inductor L2, a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4;
Specifically, the drain electrode of the third power tube Q3 is connected to the first end of the secondary side of the first transformer B1 and the first end of the second capacitor C2 through the first capacitor C1, the second end of the second capacitor C2 is connected to the source electrode of the third power tube Q3 and the cathode of the first diode D1 and is connected to the anode of the third diode D3 through the first inductor L1, the anode of the fourth diode D4 is connected to the cathode of the second diode D2 and the second end of the secondary side of the first transformer B1 through the second inductor L2, the cathode of the third diode D3 and the cathode of the fourth diode D4 are respectively connected to the first LED adjustment module 4 and the second LED adjustment module 5, the anode of the first diode D1 and the anode of the second diode D2 are grounded, and the gate electrode of the third power tube Q3 is connected to the IO3 end of the first controller U1.
In a specific embodiment, the third power transistor Q3 may be an N-channel field effect transistor, and is matched with the first capacitor C1, the first inductor L1, the second diode D2 and the third diode D3 to supply power to the first LED adjustment module 4, and matched with the first capacitor C1, the second capacitor C2, the second inductor L2, the fourth diode D4 and the first diode D1 to supply power to the second LED adjustment module 5.
Further, the first LED adjustment module 4 includes a third capacitor C3, a first LED lamp interface, a fourth power tube Q4, and a second resistor R2;
Specifically, a first end of the first LED lamp interface is connected to a cathode of the third diode D3 and grounded through the third capacitor C3, a second end of the first LED lamp interface is connected to a drain electrode of the fourth power tube Q4, a source electrode of the fourth power tube Q4 is connected to an IO11 end of the first controller U1 and grounded through the second resistor R2, and a gate electrode of the fourth power tube Q4 is connected to an IO7 end and an IO8 end of the first controller U1.
In a specific embodiment, the first end and the second end of the first LED lamp interface are respectively connected to the anode and the cathode of the first LED lamp; the third capacitor C3 performs filtering, energy storage and discharging; the fourth power tube Q4 can be an N-channel field effect tube; the second resistor R2 is used as a current sampling resistor.
Further, the second LED adjustment module 5 includes a fourth capacitor C4, a second LED lamp interface, a fifth power tube Q5, and a first resistor R1;
specifically, a first end of the second LED lamp interface is connected to the cathode of the fourth diode D4 and grounded through the fourth capacitor C4, a second end of the second LED lamp interface is connected to the drain of the fifth power tube Q5, a source of the fifth power tube Q5 is connected to the IO10 end of the first controller U1 and grounded through the first resistor R1, and a gate of the fifth power tube Q5 is connected to the IO6 end and the IO9 end of the first controller U1.
In a specific embodiment, the first end and the second end of the second LED lamp interface are respectively connected to the anode and the cathode of the second LED lamp; the fourth capacitor C4 performs filtering, energy storage and discharging; the fifth power tube Q5 can be an N-channel field effect tube; the first resistor R1 is used as a current sampling resistor; the duty ratio of the pulse signals output by the IO9 end of the first controller U1 and the IO8 end of the first controller U1 is the same.
Further, the mode control module 6 includes a first analog switch U2 and a first inverter U3;
Specifically, the IN end and the CTRL end of the first analog switch U2 are respectively connected to the IO3 end and the IO5 end of the first controller U1, the OUT end of the first analog switch U2 is connected to the first path control module 7 and the input end of the first inverter U3, and the output end of the first inverter U3 is connected to the second path control module 8.
In a specific embodiment, the first analog switch U2 may be a CD4066 chip; the first inverter U3 may be a not gate logic chip.
Further, the first path control module 7 includes a sixth power tube Q6 and a first switching tube VT1;
Specifically, the drain electrode of the sixth power tube Q6 is connected to the second end of the first LED lamp interface, the source electrode of the sixth power tube Q6 is connected to the first end of the second LED lamp interface, the gate electrode of the sixth power tube Q6 is connected to the base electrode of the first switch tube VT1 and the OUT end of the first analog switch U2, the emitter electrode of the first switch tube VT1 is grounded, and the collector electrode of the first switch tube VT1 is connected to the gate electrode of the fourth power tube Q4.
In a specific embodiment, the sixth power tube Q6 may be an N-channel field effect tube, so as to control the serial connection of the first LED lamp interface and the second LED lamp interface; the first switching transistor VT1 may be an NPN transistor, which controls the turn-off of the fourth power transistor Q4.
Further, the second path control module 8 includes a seventh power transistor Q7 and a second switching transistor VT2;
Specifically, a source electrode of the seventh power tube Q7 is connected to the first end of the first LED lamp interface, a drain electrode of the seventh power tube Q7 is connected to the second end of the second LED lamp interface, a gate electrode of the seventh power tube Q7 is connected to a base electrode of the second switch tube VT2 and an output end of the first inverter U3, an emitter electrode of the second switch tube VT2 is grounded, and a collector electrode of the second switch tube VT2 is connected to a gate electrode of the fifth power tube Q5.
In a specific embodiment, the seventh power tube Q7 may be an N-channel field effect tube, so as to control the serial connection between the second LED lamp interface and the first LED lamp interface; the second switching transistor VT2 may be an NPN transistor, which controls the turn-off of the fifth power transistor Q5.
IN the color mixing control circuit for LED illumination, the power supply interface is connected with alternating current electric energy, the voltage processing device is used for rectifying and filtering, the first controller U1 is used for controlling the voltage processing device to carry OUT voltage stabilizing adjustment, the IO1 end and the IO2 end of the first controller U1 are used for outputting pulse signals with 50 percent of duty ratio and controlling the conduction states of the first power tube Q1 and the second power tube Q2, inversion adjustment is realized, the IO3 end of the first controller U1 is used for controlling the conduction state of the third power tube Q3, when the third power tube Q3 is conducted, the second capacitor C2 and the first capacitor C1 store energy, the third power tube Q3 is matched with the first capacitor C1, the first inductor L1 and the third diode D3 to supply power for the first LED lamp interface, the first LED lamp interface is connected with the first LED lamp and matched with the fourth power tube Q4, the second resistor R2 and the second diode D2 to form a loop, the third capacitor C3 stores energy, at this time, the conduction degree of the fourth power tube Q4 can be independently regulated through the IO7 end of the first controller U1, then the independent color temperature regulation of the first LED lamp is completed, when the first controller U1 controls the third power tube Q3 to cut off, the third capacitor C3 supplies power to the first LED lamp, meanwhile, the electric energy stored by the first capacitor C1 and the second capacitor C2 is transmitted to the second LED lamp interface through the second inductor L2 and the fourth diode D4, the second LED lamp interface is connected with the second LED lamp, a loop is formed by the fifth power tube Q5, the first resistor R1 and the first diode D1, the fourth capacitor C4 stores energy, the IO6 end of the first controller U1 regulates the conduction degree of the fifth power tube Q5, the independent color temperature of the second LED lamp is regulated, when the equal color temperature regulation is needed, the IO5 end of the first controller U1 outputs a high-level first control signal to trigger the IN end and the OUT end of the first analog switch U2, the third pulse signal output by the first controller U1 is transmitted to the sixth power tube Q6 and the first switch tube VT1, and is transmitted to the seventh power tube Q7 and the second switch tube VT2 after being processed in an inverting way by the first inverter U3, so that when the third power tube Q3 is conducted, the sixth power tube Q6 and the first switch tube VT1 are conducted, the first LED lamp interface is connected in series with the second LED lamp interface, electric energy is input into the first LED lamp interface, the conduction of the fifth power tube Q5 is controlled by the IO9 end of the first controller U1, the color temperature adjustment of the first LED lamp and the second LED lamp is realized, when the third power tube Q3 is cut off, the seventh power tube Q7 and the second switch tube VT2 are conducted, the second LED lamp interface is connected in series with the first LED lamp interface, the conduction of the fourth power tube Q4 is controlled by the IO8 end of the first controller U1, the color temperature adjustment of the first LED lamp and the second LED lamp is realized, and the electric energy stored by the third capacitor C3 and the fourth capacitor C4 can compensate the first LED lamp interface and the second LED lamp interface.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the embodiments are to be considered in all respects as illustrative and not restrictive.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. A color mixing control circuit for LED illumination is characterized in that,
The color mixing control circuit for LED illumination comprises: the LED driving circuit comprises a power supply processing module, an intelligent control module, a constant current driving module, a first LED adjusting module, a second LED adjusting module, a mode control module, a first passage control module and a second passage control module;
The power supply processing module is connected with the intelligent control module and used for accessing alternating current electric energy, receiving a first pulse signal output by the intelligent control module, rectifying, filtering and stabilizing voltage regulation processing the alternating current electric energy, receiving a second pulse signal output by the intelligent control module, inverting the processed electric energy and outputting the first electric energy;
The intelligent control module is connected with the first LED adjusting module, the second LED adjusting module, the constant current driving module and the mode control module, is used for outputting a first pulse signal and a second pulse signal and controlling voltage stabilization adjustment and inversion adjustment work of the power supply processing module, is used for outputting a third pulse signal and adjusting electric energy output by the constant current driving module, is used for outputting a first control signal and controlling signal transmission work of the mode control module, is used for outputting a first adjusting signal and a second adjusting signal and respectively and independently adjusting color temperatures of the first LED adjusting module and the second LED adjusting module, is used for outputting a third adjusting signal and simultaneously adjusting the color temperatures of the first LED adjusting module and the second LED adjusting module, and is used for receiving a first detecting signal output by the first LED adjusting module and a second detecting signal output by the second LED adjusting module and adjusting duty ratio of the third pulse signal, the first adjusting signal, the second adjusting signal and the third adjusting signal;
The constant current driving module is connected with the power supply processing module and is used for receiving first electric energy, receiving third pulse signals, carrying out multipath current sharing constant current regulation and rectification processing on the input first electric energy and outputting second electric energy and third electric energy respectively;
The first LED adjusting module is connected with the constant current driving module, is used for being connected with the first LED lamp, is used for receiving second electric energy and carrying out LED illumination work, is used for receiving a first adjusting signal and independently adjusting the color temperature of the first LED lamp, is used for receiving a third adjusting signal and adjusting the color temperature of the first LED lamp, and is used for carrying out current detection on the first LED lamp and outputting a first detecting signal;
The second LED adjusting module is connected with the constant current driving module, is used for being connected with the second LED lamp, is used for receiving third electric energy and carrying out LED illumination work, is used for receiving a second adjusting signal and independently adjusting the color temperature of the second LED lamp, is used for receiving the third adjusting signal and adjusting the color temperature of the second LED lamp, and is used for carrying out current detection on the second LED lamp and outputting a second detecting signal;
The mode control module is connected with the first path control module and the second path control module, and is used for receiving a first control signal, transmitting a third pulse signal to the first path control module, carrying out reverse phase processing on the transmitted third pulse signal, outputting a fourth pulse signal and transmitting the fourth pulse signal to the second path control module;
the first path control module is connected with the second LED adjusting module and the first LED adjusting module and used for controlling the first LED adjusting module and the second LED adjusting module to carry out serial illumination when equal color temperature adjustment is needed and a third pulse signal transmitted by the mode control module is received, and the first path control module is used for stopping independent color temperature adjustment work of the first LED adjusting module;
The second path control module; the first LED adjusting module is connected with the first LED adjusting module, and is used for controlling the first LED adjusting module to carry out series illumination when the same color temperature adjustment is needed and a fourth pulse signal is received, and stopping the independent color temperature adjustment work of the first LED adjusting module;
the intelligent control module comprises a first processor; the constant current driving module comprises a third diode and a fourth diode;
The first LED adjusting module comprises a third capacitor, a first LED lamp interface, a fourth power tube and a second resistor;
The first end of the first LED lamp interface is connected with the cathode of the third diode and grounded through the third capacitor, the second end of the first LED lamp interface is connected with the drain electrode of the fourth power tube, the source electrode of the fourth power tube is connected with the IO11 end of the first controller and grounded through the second resistor, and the grid electrode of the fourth power tube is connected with the IO7 end and the IO8 end of the first controller;
the second LED adjusting module comprises a fourth capacitor, a second LED lamp interface, a fifth power tube and a first resistor;
the first end of the second LED lamp interface is connected with the cathode of the fourth diode and grounded through a fourth capacitor, the second end of the second LED lamp interface is connected with the drain electrode of a fifth power tube, the source electrode of the fifth power tube is connected with the IO10 end of the first controller and grounded through a first resistor, and the grid electrode of the fifth power tube is connected with the IO6 end and the IO9 end of the first controller;
The mode control module comprises a first analog switch and a first inverter;
The IN end and the CTRL end of the first analog switch are respectively connected with the IO3 end and the IO5 end of the first controller, the OUT end of the first analog switch is connected with the first path control module and the input end of the first inverter, and the output end of the first inverter is connected with the second path control module;
The first path control module comprises a sixth power tube and a first switch tube;
The drain electrode of the sixth power tube is connected with the second end of the first LED lamp interface, the source electrode of the sixth power tube is connected with the first end of the second LED lamp interface, the grid electrode of the sixth power tube is connected with the base electrode of the first switch tube and the OUT end of the first analog switch, the emitter electrode of the first switch tube is grounded, and the collector electrode of the first switch tube is connected with the grid electrode of the fourth power tube;
the second path control module comprises a seventh power tube and a second switching tube;
The source electrode of the seventh power tube is connected with the first end of the first LED lamp interface, the drain electrode of the seventh power tube is connected with the second end of the second LED lamp interface, the grid electrode of the seventh power tube is connected with the base electrode of the second switching tube and the output end of the first inverter, the emitter electrode of the second switching tube is grounded, and the collector electrode of the second switching tube is connected with the grid electrode of the fifth power tube.
2. The LED lighting color mixing control circuit of claim 1, wherein the power processing module comprises a power interface, a voltage processing device, a first power tube, a second power tube, and a first transformer; the intelligent control module comprises a first controller;
The first end of the power interface is connected with the input end of the voltage processing device, the control end of the voltage processing device, the grid electrode of the first power tube and the grid electrode of the second power tube are respectively connected with the IO4 end, the IO2 end and the IO1 end of the first controller, the drain electrode of the first power tube and the drain electrode of the second power tube are respectively connected with the first end and the second end of the primary side of the first transformer, the output end of the voltage processing device is connected with the third end of the primary side of the first transformer, and the second end of the power interface, the grounding end of the voltage processing device, the source electrode of the first power tube and the source electrode of the second power tube are grounded.
3. The LED lighting color mixing control circuit of claim 2, wherein the constant current driving module further comprises a first capacitor, a second capacitor, a third power tube, a first inductor, a second inductor, a first diode, and a second diode;
the drain electrode of the third power tube is connected with the first end of the secondary side of the first transformer and the first end of the second capacitor through the first capacitor, the second end of the second capacitor is connected with the source electrode of the third power tube and the cathode of the first diode and is connected with the anode of the third diode through the first inductor, the anode of the fourth diode is connected with the cathode of the second diode and the second end of the secondary side of the first transformer through the second inductor, the cathode of the third diode and the cathode of the fourth diode are respectively connected with the first LED adjusting module and the second LED adjusting module, the anode of the first diode and the anode of the second diode are grounded, and the grid electrode of the third power tube is connected with the IO3 end of the first controller.
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