CN107509278A - A kind of LED drive power - Google Patents
A kind of LED drive power Download PDFInfo
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- CN107509278A CN107509278A CN201710861556.3A CN201710861556A CN107509278A CN 107509278 A CN107509278 A CN 107509278A CN 201710861556 A CN201710861556 A CN 201710861556A CN 107509278 A CN107509278 A CN 107509278A
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- 239000003086 colorant Substances 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims description 33
- 239000003990 capacitor Substances 0.000 claims description 25
- 239000004065 semiconductor Substances 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 241000023320 Luma <angiosperm> Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The present invention discloses a kind of LED drive power, and the LED drive power includes：LED drive circuit, LED light group is connected to, drives LED light group to light for the alternating current of input to be converted into direct current, LED light group includes the LED string of at least two string different-colours；Signal deteching circuit, 0 10V light modulators are connected to, for detecting the change of 0 10V dimmer voltages, when the voltage of 0 10V light modulators is more than first threshold voltage, send dim signal to adjusting control circuit；When the voltage for detecting 0 10V light modulators is less than second threshold voltage and returns to more than second threshold voltage in preset time, sends toning signal and give toning control circuit；Adjusting control circuit, for being output to the electric current of LED light group according to dim signal control LED drive circuit；Toning control circuit, for the light on and off according to LED string in toning signal control LED light group.LED drive power provided by the invention realizes the light modulation toning function of LED lamp using the original 0 10V light modulators of circuit, greatlys save cost.
Description
Technical field
The present invention relates to technical field of LED illumination, more particularly to a kind of LED drive power.
Background technology
At present, LED lamp because having the advantages that energy-saving and environmental protection, service life is long and is gradually approved by consumer, LED
The original electricity-saving lamp of tool replacement, fluorescent lamp are also more and more common, in North America and European market due to substantial amounts of band 0-10V light modulations before
The presence of the electricity-saving lamp, fluorescent lamp of function, it result in the LED lamp of many outlet Europe and North America market now and be required for compatibility
0-10V dimming functions, so directly change light fixture, it is possible to utilize original 0-10V light modulators.
And with advances in technology, the improvement of people's living standards, requirement of the people to illuminator also more and more higher, no
Brightness only to requiring light can be adjusted, and color, colour temperature also to light etc. propose higher requirement, i.e., not only to dim
Also to mix colours.The scheme of light modulation toning can synchronously be realized in the market mainly WIFI and 2.4G, and both schemes are all adopted
Realized with the mode of remote control, and either 2.4G or WIFI must increase corresponding transmitting and receiving module, WIFI
Mode, which also needs to the peripheral gateways such as increase router, to be realized, it is impossible to directly utilize original already installed 0-10V light modulations
Device, cause cost very expensive, can not spread to domestic lighting on a large scale up at present.
The content of the invention
The technical problems to be solved by the invention are to propose that one kind can utilize the original 0-10V light modulators of circuit to realize
The LED drive power of LED lamp light modulation toning function.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of LED drive power, the LED drive power include：
One LED drive circuit, a LED light group is connected to, institute is driven for the alternating current of input to be converted into direct current
State LED light group to light, the LED light group includes the LED string of at least two string different-colours；
One signal deteching circuit, 0-10V light modulators are connected to, for detecting the change of 0-10V dimmer voltages, work as 0-
When the voltage of 10V light modulators is more than first threshold voltage, dim signal is sent to adjusting control circuit；When detect 0-10V adjust
When the voltage of light device is less than second threshold voltage and returned in preset time more than the second threshold voltage, toning is sent
Signal gives toning control circuit；
One adjusting control circuit, is connected to signal deteching circuit and LED drive circuit, for according to the dim signal control
LED drive circuit processed is output to the electric current of LED light group, so as to control the luminous intensity of LED light group；
One toning control circuit, is connected to signal deteching circuit, LED drive circuit and LED light group, for according to the tune
Chrominance signal controls the light on and off of LED string in the LED light group, so as to control the colour temperature of LED light group.
Wherein, the toning control circuit includes a MCU U6 and at least double switch circuit, a MCU U6 input is drawn
Pin connects the output end of signal deteching circuit, and MCU U6 output pin is correspondingly connected each via an on-off circuit
One LED string.
Wherein, the on-off circuit includes a photoelectrical coupler, a metal-oxide-semiconductor, first resistor, second resistance and the 3rd electricity
Resistance, one end connection MCU U6 of a first resistor output pin, the other end connection photoelectric coupling of the first resistor
The positive pole of the light emitting diode of device, the negative pole ground connection of the light emitting diode of photoelectrical coupler, one end connection of the second resistance
The positive pole OUT+ of LED drive circuit power output end, the phototriode of another termination photoelectrical coupler of the second resistance
Colelctor electrode, the emitter stage of the phototriode of photoelectrical coupler connect the metal-oxide-semiconductor grid and the 3rd resistor one
End, the negative pole of the drain electrode one LED string of connection of the metal-oxide-semiconductor, the source electrode of the metal-oxide-semiconductor connect the another of the 3rd resistor
One end and the negative pole OUT- of LED drive circuit power output end；The positive pole connection LED drive circuit power supply of wherein LED string is defeated
Go out the positive pole OUT+ at end.
Wherein, the on-off circuit also includes the 4th resistance and a filter capacitor, one end connection MOS of the 4th resistance
The drain electrode of pipe, one end of the other end connection filter capacitor of the 4th resistance, the other end connection LED drive circuit electricity of filter capacitor
The negative pole OUT- of source output terminal.
Wherein, the toning control circuit also includes resistance R57, resistance R63 and voltage-stabiliser tube ZD1, and the one of the resistance R57
The output end of end connection signal deteching circuit, the other end of the resistance R57 connect one end and the voltage-stabiliser tube of the resistance R63
ZD1 negative pole, a resistance R63 other end connection MCU U6 input pin, the plus earth of the voltage-stabiliser tube ZD1.
Wherein, the LED drive power also includes a mu balanced circuit, the mu balanced circuit include resistance R59, resistance R60,
Voltage-stabiliser tube ZD2, voltage-stabiliser tube ZD3, triode Q5 and electrochemical capacitor E6, the resistance R59 one end resistance R60 one end connection electricity
Source VCC, the other end connection voltage-stabiliser tube ZD2 of resistance 60 negative pole, voltage-stabiliser tube ZD2 positive pole connecting triode Q5 colelctor electrode,
Triode Q5 base stage connection resistance R59 one end and voltage-stabiliser tube ZD3 negative pole, the emitter stage connection power vd D of triode and
Electrochemical capacitor E6 positive pole, voltage-stabiliser tube ZD3 positive pole and electrochemical capacitor E6 negative pole ground connection.
Wherein, the model SH79F084A of the MCU U6.
Wherein, the model EL817 of photoelectrical coupler, the model 11A/100V of metal-oxide-semiconductor, first in the on-off circuit
Resistance is 1K Ω, second resistance is 20K Ω, 3rd resistor is 10K Ω, the 4th resistance is 10K Ω, the model of filter capacitor
221/1KV。
Wherein, resistance R57 is 82K Ω in the toning control circuit, resistance R63 is 1K and voltage-stabiliser tube ZD1 is 5.1V.
Wherein, resistance R59 is 0.82K Ω in the mu balanced circuit, resistance R60 is 0.82K Ω, voltage-stabiliser tube ZD2 be 5.6V,
Voltage-stabiliser tube ZD3 is 5.6V, triode Q5 model 3904, electrochemical capacitor E6 model 22UF/50V.
Compared with prior art, beneficial effects of the present invention are：It is original that LED drive power provided by the invention is based on circuit
0-10V light modulators, by increase signal deteching circuit and toning control circuit, according to the change of the voltage of 0-10V light modulators
The regulation of LED colour temperatures is realized in the light on and off of the string LED strings of control at least two, to realize the light modulation toning function of LED lamp, this hair
It is bright to increase any wiring, traditional electricity-saving lamp, fluorescent lamp be directly replaced with to LED is double-colored or polychrome light fixture can be realized
The light modulation toning of LED lamp, greatlys save wiring cost.
Brief description of the drawings
Fig. 1 is a kind of circuit block diagram for LED drive power that the specific embodiment of the invention provides.
Fig. 2 is a kind of circuit diagram for toning control circuit that the specific embodiment of the invention provides.
Fig. 3 is a kind of circuit diagram for mu balanced circuit that the specific embodiment of the invention provides.
Embodiment
For make present invention solves the technical problem that, the technical scheme that uses and the technique effect that reaches it is clearer, below
The technical scheme of the embodiment of the present invention will be described in further detail with reference to accompanying drawing, it is clear that described embodiment is only
It is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art exist
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
1~3 pair of LED drive power provided in an embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.Please
With reference to figure 1, it is a kind of circuit block diagram of the LED drive power provided in the specific embodiment of the invention, as shown in figure 1,
In some embodiments, the LED drive power 10 includes：One LED drive circuit 101, a LED light group 12 is connected to, for will be defeated
The alternating current entered is converted into direct current and drives the LED light group 12 luminous, and it is not homochromy that the LED light group 12 includes at least two strings
Temperature LED string (including the first string LED string 121, second go here and there LED string 122 ... and N strings LED string 12N, wherein N
≥2)；One signal deteching circuit 103, is connected to 0-10V light modulators 11, for detecting the change of the voltage of 0-10V light modulators 11, when
When the voltage of 0-10V light modulators 11 is more than first threshold voltage, dim signal is sent to adjusting control circuit 102；When detecting
The voltage of 0-10V light modulators 11 is less than second threshold voltage and returned in preset time more than the second threshold voltage
When, send toning signal and give toning control circuit 104；One adjusting control circuit 102, is connected to signal deteching circuit 103 and LED
Drive circuit 101, for being output to the electric current of LED light group 12 according to dim signal control LED drive circuit 101, so as to
Control the luminous intensity of LED light group 12；One toning control circuit 104, is connected to signal deteching circuit 103, LED drive circuit
101 and LED light group 12, for controlling the light on and off of LED string in the LED light group 12 according to the toning signal, so as to control
The colour temperature of LED light group 12.
In the present embodiment, first threshold voltage 1V, when signal deteching circuit 103 detects 0-10V light modulators 11
When voltage is more than 1V, continue to adjust the voltage (voltage of 0-10V light modulators is more than 1V) of 0-10V light modulators 11, signal detection electricity
Road 103 sends dim signal to adjusting control circuit so that adjusting control circuit 102 controls LED drive circuit 101 to be output to LED
The electric current of lamp group 12, it is achieved thereby that the control to the luminous intensity of LED light group 12.LED light group 12 is included extremely in the present embodiment
Less go here and there different-colour LED string (121-12N), if such as including two groups of colour temperatures be respectively 6000K the 1st string LED string and
3000K the 2nd string LED string, second threshold voltage 1V, preset time 3S, if MCU U6 acquiescences are open-minded under normal circumstances
1st string LED string (the metal-oxide-semiconductor Q3 for opening accompanying drawing 2), the light that now LED light group is sent is 6000K white lights；When signal detection electricity
When road 103 detects that the voltage of 0-10V light modulators 11 is less than 1V and more than 1V is returned in 3S, the 1st string LED string is closed,
The 2nd string LED string is opened, the 1st string LED string does not light, and the 2nd string LED string lights, and the light that now LED light group is sent is
3000K gold-tinted；When signal deteching circuit 103 detects the voltage of 0-10V light modulators 11 less than 1V again and recovers in 3S
During to more than 1V, the 1st string LED string is opened, the 1st string LED string and the 2nd string LED string are luminous, and now LED light group is sent
The 4500K similar sunshine that is mixed to get for 6000K+3000K of light；When signal deteching circuit 103 detects 0-10V again
The voltage of light modulator 11 is less than 1V and when more than 1V is returned in 3S, closes the 2nd string LED string, the 1st string LED string is luminous,
2nd string LED string do not light, the light that now LED string is sent be 6000K white light, with this realize 6000K → 3000K →
The circulation of different-colour between 4500K → 6000K.The present embodiment is by controlling the light on and off of two colour contamination temperature LED strings to realize
The switching of 6000K white lights, 3000K gold-tinteds and 45000K similar to the different-colour between sunshine.Similarly, it is if different including 3 strings
The LED string of colour temperature, toning control circuit then include 3 path switching circuits, three go here and there different-colours LED string (such as lamp string A, B,
C) then there are 7 kinds of various combinations so as to obtain 7 kinds of different colour temperatures, A, B, C, A+B, A+C, B+C, A+B+C, more multigroup different-colour
LED string, then obtain more kinds of different colour temperatures, trigger signal turned to the change of the voltage of 0-10V light modulators 11, when detecting
The voltage of 0-10V light modulators 11 is less than second threshold voltage and returned in preset time more than the second threshold voltage,
The light on and off of different-colour LED string are controlled, realize the control to LED light group colour temperature.At the same time the function of dimming is also synchronous real
It is existing, if lighting the state of any one colour temperature on this basis, light modulator both end voltage is adjusted to≤1V, dimmed after 3S
Device does not have any action, then MCU can remember current state, after adjusting light modulator both end voltage >=1V next time, or before
Color temperature mode, colour temperature switching will not be carried out.
The LED drive power that the present embodiment provides is based on the original 0-10V light modulators of circuit, by increasing signal detection electricity
Road and toning control circuit, realized according to the light on and off of the string LED string of change control at least two of the voltage of 0-10V light modulators
The regulation of LED colour temperatures, to realize the light modulation toning function of LED lamp, the present invention need not increase any wiring, directly by tradition
Electricity-saving lamp, fluorescent lamp is replaced with that LED is double-colored or polychrome light fixture can realize the light modulation toning of LED lamp, greatly save and connect
Line cost.
In certain embodiments, control circuit 104 of mixing colours includes a MCU U6 and at least double switch circuit 1041, MCU
The output end of U6 input pin connection signal deteching circuit, MCU U6 output pin is each via an on-off circuit
And correspondingly connected LED string.The toning signal that MCU U6 are sent according to signal deteching circuit 103 is sent by output pin
Signal controls the closing and conducting of the on-off circuit 1041, that is, controls the light on and off of LED string, is connected per path switching circuit 1041
An one MCU U6 output pin, per path switching circuit 1041, independently of each other, often string LED series winding connects an on-off circuit 1041,
So as to realize that MCU U6 to every control for going out of string LED cross luma, that is, realize the control to the overall light emission color temperature of total LED light group
System.
Fig. 2 is a kind of circuit diagram for toning control circuit that the specific embodiment of the invention provides, as shown in Fig. 2 one
In a little embodiments, the on-off circuit 1041 includes a photoelectrical coupler, a metal-oxide-semiconductor, first resistor, second resistance and the 3rd
Resistance, one end connection MCU U6 of a first resistor output pin, the other end connection photoelectricity coupling of the first resistor
The positive pole of the light emitting diode of clutch, the negative pole ground connection of the light emitting diode of photoelectrical coupler, one end of the second resistance connects
Connect the positive pole OUT+ of LED drive circuit power output end, photosensitive three pole of another termination photoelectrical coupler of the second resistance
The colelctor electrode of pipe, the emitter stage of the phototriode of photoelectrical coupler connect the grid of the metal-oxide-semiconductor and the 3rd resistor
One end, the negative pole of the drain electrode one LED string of connection of the metal-oxide-semiconductor, the source electrode of the metal-oxide-semiconductor connect the 3rd resistor
The negative pole OUT- of the other end and LED drive circuit power output end；The wherein positive pole connection LED drive circuit power supply of LED string
The positive pole OUT+ of output end.
As shown in Fig. 2 opened as an embodiment, MCU U6 model SH79F084A, toning control circuit including two-way
Powered-down road 1041, corresponding LED light group include the 1st string LED string and the 2nd string LED string, and a path switching circuit 1041 includes light
Electric coupler U4, a metal-oxide-semiconductor Q3, first resistor R61, second resistance R50 and 3rd resistor R54, metal-oxide-semiconductor Q3 drain electrode connect
The negative pole of 1st string LED string, a first resistor R61 one end connection MCU U6 output pin (pin 3)；Another way switch
Circuit 1041 includes photoelectrical coupler U5, a metal-oxide-semiconductor Q4, first resistor R62, second resistance R51 and 3rd resistor R56, MOS
The negative pole of the pipe Q4 string LED string of drain electrode connection the 2nd, a first resistor R62 one end connection MCU U6 output pin (pin
2)。
As shown in Fig. 2 on-off circuit 1041 also includes the 4th resistance and a filter capacitor, one end of the 4th resistance connects
Connect the drain electrode of metal-oxide-semiconductor, one end of the other end connection filter capacitor of the 4th resistance, the other end connection LED drivings of filter capacitor
The negative pole OUT- of circuit power output end.As shown in Fig. 2 the 4th resistance is R52, filter capacitor in a path switching circuit 1041
For C22, the 4th resistance R52 one end connection metal-oxide-semiconductor Q3 drain electrode；In another path switching circuit 1041 the 4th resistance be R55,
Filter capacitor is C19, and the 4th resistance R55 one end connects metal-oxide-semiconductor Q4 drain electrode.The 4th resistance and filter in on-off circuit 1041
Ripple electric capacity C19 plays a part of electromagnetic compatibility.
As shown in Fig. 2 toning control circuit 104 also includes resistance R57, resistance R63 and voltage-stabiliser tube ZD1, the resistance R57
One end connection signal deteching circuit output end, the other end of the resistance R57 connects one end and the voltage stabilizing of the resistance R63
Pipe ZD1 negative pole, a resistance R63 other end connection MCU U6 input pin (pin 10), the positive pole of the voltage-stabiliser tube ZD1
Ground connection.As one embodiment, resistance R57 is 82K Ω in detection circuit, resistance R63 is 1K and voltage-stabiliser tube ZD1 is 5.1V.
As one embodiment, the model EL817 of photoelectrical coupler (U4, U5) in on-off circuit 1041, metal-oxide-semiconductor (Q3,
Q4 model 11A/100V), first resistor (R61, R62) are 1K Ω, second resistance (R50, R51) is 20K Ω, 3rd resistor
(R54, R56) is 10K Ω, the 4th resistance (R52, R55) is 10K Ω, the model 221/1KV of filter capacitor (C22, C19).
In certain embodiments, MCU U6 power pins (pin 16) connection power vd D, electric capacity C20 one end and electricity
Hold C21 one end, the electric capacity C20 other end and electric capacity C21 other end ground connection, the grounding pin ground connection of the MCU U6.
In certain embodiments, LED drive power also includes a mu balanced circuit, and the mu balanced circuit includes resistance R59, electricity
Hinder R60, voltage-stabiliser tube ZD2, voltage-stabiliser tube ZD3, triode Q5 and electrochemical capacitor E6, the resistance R59 one end resistance R60 one end
Connect power supply VCC, the other end connection voltage-stabiliser tube ZD2 of resistance 60 negative pole, voltage-stabiliser tube ZD2 positive pole connecting triode Q5 collection
Electrode, triode Q5 base stage connection resistance R59 one end and voltage-stabiliser tube ZD3 negative pole, the emitter stage connection power supply of triode
VDD and electrochemical capacitor E6 positive pole, voltage-stabiliser tube ZD3 positive pole and electrochemical capacitor E6 negative pole ground connection, wherein power supply VCC is by LED
Drive circuit provides, and mu balanced circuit is used to being converted to the VCC of LED drive circuit output into the power vd D for MCU U6 power supplies.Make
For one embodiment, resistance R59 is 0.82K Ω in mu balanced circuit, resistance R60 is 0.82K Ω, voltage-stabiliser tube ZD2 is 5.6V, voltage stabilizing
Pipe ZD3 is 5.6V, triode Q5 model 3904, electrochemical capacitor E6 model 22UF/50V.
The LED drive power that the specific embodiment of the invention provides is based on original 0-10V light modulators on circuit, passes through improvement
Traditional 0-10V dimming arrangements, directly realize that LED lamp light modulation is adjusted using the already installed 0-10V light modulators of terminal client
Traditional electricity-saving lamp, fluorescent lamp are directly replaced with that LED is double-colored or polychrome light fixture by the function of color, client, it is not necessary to increase
It is any be wired as it is original realize light modulation toning, and be able to can be customized according to the demand of client the switching between random color and
Brightness regulation by increase signal deteching circuit and toning control circuit, according to the change of the voltage of 0-10V light modulators control to
The regulation of LED colour temperatures is realized in the light on and off of few LED light group, and the light modulation that LED lamp is realized using original 0-10 light modulators mixed colours
Function, it is cost-effective.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel would not require any inventive effort the other embodiments that can associate the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of LED drive power, the LED drive power includes：
One LED drive circuit, a LED light group is connected to, the LED is driven for the alternating current of input to be converted into direct current
Lamp group lights, and the LED light group includes the LED string of at least two string different-colours；
One signal deteching circuit, 0-10V light modulators are connected to, for detecting the change of 0-10V dimmer voltages, when 0-10V is adjusted
When the voltage of light device is more than first threshold voltage, dim signal is sent to adjusting control circuit；When detecting 0-10V light modulators
Voltage is less than second threshold voltage and when being returned in preset time more than the second threshold voltage, send toning signal to
Toning control circuit；
One adjusting control circuit, the signal deteching circuit and LED drive circuit are connected to, for according to the dim signal control
LED drive circuit processed is output to the electric current of LED light group, so as to control the luminous intensity of LED light group；
One toning control circuit, is connected to the signal deteching circuit, LED drive circuit and LED light group, for according to the tune
Chrominance signal controls the light on and off of LED string in the LED light group, so as to control the colour temperature of LED light group.
2. a kind of LED drive power according to claim 1, it is characterised in that the toning control circuit includes a MCU
U6 and at least double switch circuit, the output end of MCU U6 input pin connection signal deteching circuit, MCU U6 output
Pin correspondingly connected LED string each via an on-off circuit.
3. a kind of LED drive power according to claim 2, it is characterised in that the on-off circuit includes a photoelectricity coupling
Clutch, a metal-oxide-semiconductor, first resistor, second resistance and 3rd resistor, the one of one end connection MCU U6 of the first resistor are defeated
Go out pin, the positive pole of the light emitting diode of the other end connection photoelectrical coupler of the first resistor, photoelectrical coupler lights
The negative pole ground connection of diode, the positive pole OUT+ of one end connection LED drive circuit power output end of the second resistance, described the
The colelctor electrode of the phototriode of another termination photoelectrical coupler of two resistance, the emitter stage of the phototriode of photoelectrical coupler
The grid of the metal-oxide-semiconductor and one end of the 3rd resistor are connected, the drain electrode one LED string of connection of the metal-oxide-semiconductor is born
Pole, the source electrode of the metal-oxide-semiconductor connect the other end of the 3rd resistor and the negative pole OUT- of LED drive circuit power output end；
The wherein positive pole OUT+ of the positive pole connection LED drive circuit power output end of LED string.
4. a kind of LED drive power according to claim 3, it is characterised in that the on-off circuit also includes the 4th electricity
Resistance and a filter capacitor, the drain electrode of one end connection metal-oxide-semiconductor of the 4th resistance, the other end connection filter capacitor of the 4th resistance
One end, filter capacitor the other end connection LED drive circuit power output end negative pole OUT-.
5. a kind of LED drive power according to claim 2, it is characterised in that the toning control circuit also includes electricity
Hinder the output end of R57, resistance R63 and voltage-stabiliser tube ZD1, the resistance R57 one end connection signal deteching circuit, the resistance
The R57 other end connects one end of the resistance R63 and voltage-stabiliser tube ZD1 negative pole, resistance R63 other end connection MCU U6's
One input pin, the plus earth of the voltage-stabiliser tube ZD1.
6. a kind of LED drive power according to claim 1, it is characterised in that it is steady that the LED drive power also includes one
Volt circuit, the mu balanced circuit include resistance R59, resistance R60, voltage-stabiliser tube ZD2, voltage-stabiliser tube ZD3, triode Q5 and electrochemical capacitor
E6, the resistance R59 one end resistance R60 one end connection power supply VCC, the other end connection voltage-stabiliser tube ZD2's of resistance 60 is negative
Pole, voltage-stabiliser tube ZD2 positive pole connecting triode Q5 colelctor electrode, triode Q5 base stage connection resistance R59 one end and voltage stabilizing
Pipe ZD3 negative pole, the emitter stage connection power vd D and electrochemical capacitor E6 of triode positive pole, voltage-stabiliser tube ZD3 positive pole and electrolysis
Electric capacity E6 negative pole ground connection.
A kind of 7. LED drive power according to claim 2, it is characterised in that the model of the MCU U6
SH79F084A。
A kind of 8. LED drive power according to claim 4, it is characterised in that photoelectrical coupler in the on-off circuit
Model EL817, the model 11A/100V of metal-oxide-semiconductor, first resistor be 1K Ω, second resistance is 20K Ω, 3rd resistor is
10K Ω, the 4th resistance are 10K Ω, the model 221/1KV of filter capacitor.
A kind of 9. LED drive power according to claim 5, it is characterised in that resistance R57 in the toning control circuit
For 82K Ω, resistance R63 be 1K and voltage-stabiliser tube ZD1 is 5.1V.
10. a kind of LED drive power according to claim 6, it is characterised in that resistance R59 is in the mu balanced circuit
0.82K Ω, resistance R60 are 0.82K Ω, voltage-stabiliser tube ZD2 is 5.6V, voltage-stabiliser tube ZD3 is 5.6V, triode Q5 model
3904th, electrochemical capacitor E6 model 22UF/50V.
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| CN109462915A (en) * | 2018-11-24 | 2019-03-12 | 巨尔(上海)光电照明有限公司 | The LED lamp panel and its adjusting method of adjustable color temperature |
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| CN110730535A (en) * | 2019-10-25 | 2020-01-24 | 厦门阳光恩耐照明有限公司 | Module and method for switching color temperature through dimming |
| CN112351549A (en) * | 2020-11-24 | 2021-02-09 | 莱昊(上海)光电科技有限公司 | Device and method for carrying out digital communication with LED lamp through 0-10V dimming interface |
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