CN107896403A - A kind of LED power - Google Patents
A kind of LED power Download PDFInfo
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- CN107896403A CN107896403A CN201711383622.7A CN201711383622A CN107896403A CN 107896403 A CN107896403 A CN 107896403A CN 201711383622 A CN201711383622 A CN 201711383622A CN 107896403 A CN107896403 A CN 107896403A
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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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- 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]
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Abstract
The present invention relates to a kind of LED power, powered by the way that three live wires of three-phase alternating current are changed into any one live wire and zero line for the first switch that three-phase phase is adjusted to power-switching circuit, equilibrium is converted to two-phase alternating current between realizing three phase network phase, it is not required to distribution box three-phase electricity and is converted to two-phase electricity, reduce user cost and installation difficulty, the DALI signals of input are converted to by light modulation by the second chip and switching signal exports, the light modulation of input and switching signal are converted to stable pwm signal and exported by the first chip, pwm signal passes through current rectifying and wave filtering circuit respectively, colour temperature adjusts circui and power-sensing circuit are realized stable without fluctuation, DALI intelligent controls, the function of adjustable color and power adjustable.
Description
Technical field
The present invention relates to lighting technical field, and in particular to a kind of LED power.
Background technology
LED illumination has energy-efficient, and securely and reliably, installation is simple, powerful, it is environmentally friendly the advantages that and obtained the whole world
Various countries widely popularize popularization, and LED illumination is widely used in public place and domestic lighting, are a kind of green healthy eyeshield light
Source, the requirement of client is more next high at present, and function also requires more and more, and such as large-scale luxury stores requires the multiple productions of bar shaped panel light
Product are seamlessly connected, low harmony wave, stable without fluctuation, are integrated DALI intelligent controls, adjustable color, power adjustable etc., are realized circuit ratio
It is more complicated cumbersome, and existing product can not provide it is a kind of by low harmony wave, without stroboscopic, DALI controls, adjustable color and power
The adjustable multifunctional efficient LED switch power supply being integrated in one.
The content of the invention
The technical problems to be solved by the invention are：There is provided it is a kind of stable without fluctuation, DALI intelligent controls, adjustable color with
And the multifunctional efficient LED switch power supply that power adjustable is integrated in one.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of LED power, including first switch,
Second switch, the 3rd switch, power-switching circuit, the first chip, the second chip, the first triode, transformer, rectifying and wave-filtering electricity
Road, colour temperature adjusts circui and power-sensing circuit；
The input of the first switch is connected with three-phase alternating current input, the output end of the first switch and the electricity
The input of power-switching circuit is connected, and the first switch is used to be converted to two-phase to three-phase alternating current input progress phase adjusted
Exchange electricity output；
The output end of the power-switching circuit is connected with the first chip and the second chip respectively, for by two-phase alternating current
Input is converted to the first chip and the dc source needed for the second chip；
The input of second chip is connected with the input of DALI signals, output end and the one or three pole of first chip
The grid of pipe is connected, and the source electrode of first triode is connected with the input of power-sensing circuit, first triode
Drain electrode is connected with the input of transformer, and first triode is used to produce switching current signal according to pwm signal, will switch
Current signal is transferred to power-sensing circuit and transformer respectively；
The first output end and the second output end of the power-sensing circuit respectively with the second input of the first chip and
The input of second switch is connected, and the output end of the second switch is connected with the 3rd input of the first chip, the power
Detection circuit is used to switching current signal being converted to current signal transfer to the first chip, and according to required power output
Size and the switching for controlling second switch；
The output end of the transformer is connected with the input of current rectifying and wave filtering circuit, the output end of the current rectifying and wave filtering circuit
It is connected with the input of the 3rd switch, the output end of the 3rd switch is connected with colour temperature adjusts circui；The transformer is used for
Switching current signal is converted into direct voltage output to current rectifying and wave filtering circuit；The current rectifying and wave filtering circuit is used to suppress input
The ripple current of DC voltage；
First chip is used to being converted to the light modulation of input and switching signal into stable pwm signal output；
The output end of second chip is connected with the first input end of the first chip, for the DALI signals of input to be turned
It is changed to light modulation and switching signal output.
The beneficial effects of the present invention are：By for the first switch that three-phase phase is adjusted by three of three-phase alternating current
Live wire is changed into any one live wire and zero line and powered to power-switching circuit, is not required to distribution box three-phase electricity and is converted to two-phase electricity, real
Equilibrium is converted to two-phase alternating current between having showed three phase network phase, reduces user cost and installation difficulty, will by the second chip
The DALI signals of input are converted to light modulation and switching signal output, and the first chip is converted to the light modulation of input and switching signal surely
Fixed pwm signal output, pwm signal are realized steady by current rectifying and wave filtering circuit, colour temperature adjusts circui and power-sensing circuit respectively
The fixed function without fluctuation, DALI intelligent controls, adjustable color and power adjustable, of the invention reliable and stable, cost is low and benefit
It is high.
Brief description of the drawings
Fig. 1 is the schematic diagram according to a kind of LED power of the present invention；
Fig. 2 is a kind of power-switching circuit of LED power and the circuit diagram of the first chip according to the present invention；
Fig. 3 is the circuit according to a kind of the first triode of LED power of the present invention, transformer and current rectifying and wave filtering circuit
Figure；
Fig. 4 is the circuit diagram according to a kind of the second chip of LED power of the present invention；
Label declaration：
1st, first switch；2nd, second switch；3rd, the 3rd switch；4th, power-switching circuit；
5th, the first chip；6th, the second chip；7th, the first triode；8th, transformer；
9th, current rectifying and wave filtering circuit；10th, colour temperature adjusts circui；11st, power-sensing circuit.
Embodiment
To describe the technology contents of the present invention, the objects and the effects in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：Equilibrium is converted to two between realizing three phase network phase by phase adjusted switch
Cross streams electricity, DALI signals are converted into light modulation and switching signal exports, stable PWM is converted to by light modulation and switching signal
Signal output, pwm signal are realized stable without ripple by current rectifying and wave filtering circuit, colour temperature adjusts circui and power-sensing circuit respectively
The function of dynamic, DALI intelligent controls, adjustable color and power adjustable.
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are refer to,
A kind of LED power, including first switch 1, second switch the 2, the 3rd switch 3, power-switching circuit 4, the first chip
5th, the second chip 6, the first triode 7, transformer 8, current rectifying and wave filtering circuit 9, colour temperature adjusts circui 10 and power-sensing circuit 11；
The input of the input of the first switch 1 and three-phase alternating current is connected, the output end of the first switch 1 with it is described
The input of power-switching circuit 4 is connected, and the first switch 1 is used to be converted to three-phase alternating current input progress phase adjusted
Two-phase alternating current exports；
The output end of the power-switching circuit 4 is connected with the first chip 5 and the second chip 6 respectively, for two to be intersected
Stream electricity input is converted to the first chip 5 and the dc source needed for the second chip 6；
The input of second chip 6 is connected with the input of DALI signals, output end and the first core of second chip 6
The first input end of piece 5 is connected, and the output end of first chip 5 is connected with the grid of the first triode 7, the one or three pole
The source electrode of pipe 7 is connected with the input of power-sensing circuit 11, the drain electrode of first triode 7 and the input of transformer 8
It is connected, first triode 7 is used for the pwm signal according to caused by the first chip 5 and produces switching current signal, by switching current
Signal is transferred to power-sensing circuit 11 and transformer 8 respectively；
The first output end and the second output end of the power-sensing circuit 11 the second input with the first chip 5 respectively
It is connected with the input of second switch 2, the output end of the second switch 2 is connected with the 3rd input of the first chip 5, described
Power-sensing circuit 11 is used to switching current signal being converted to current signal transfer to the first chip 5, and according to required
Power output size and control the switching of second switch 2；
The output end of the transformer 8 is connected with the input of current rectifying and wave filtering circuit 9, the current rectifying and wave filtering circuit 9 it is defeated
The input for going out end with the 3rd switch 3 is connected, and the output end of the 3rd switch 3 is connected with colour temperature adjusts circui 10；The change
Depressor 8 is used to switching current signal being converted to direct voltage output to current rectifying and wave filtering circuit 9；The current rectifying and wave filtering circuit 9 is used
In the ripple current for the DC voltage for suppressing input；
First chip 5 is used to being converted to the light modulation of input and switching signal into stable pwm signal output；
Second chip 6 is used to the DALI signals of input being converted to light modulation and switching signal exports.
It was found from foregoing description, the beneficial effects of the present invention are：Will by the first switch adjusted for three-phase phase
Three live wires of three-phase alternating current are changed into any one live wire and zero line and powered to power-switching circuit, are not required to distribution box three-phase electricity
Two-phase electricity is converted to, equilibrium between three phase network phase is realized and is converted to two-phase alternating current, reduce user cost and installation difficulty,
The DALI signals of input are converted to by light modulation by the second chip and switching signal exports, the first chip is by the light modulation of input and opens
OFF signal is converted to stable pwm signal output, and pwm signal passes through current rectifying and wave filtering circuit, colour temperature adjusts circui and power respectively
The stable function without fluctuation, DALI intelligent controls, adjustable color and power adjustable of circuit realiration is detected, the present invention is stable can
Lean on, cost is low and high efficiency.
Further, the first switch is phase change-over switch.
Seen from the above description, three live wires of three-phase alternating current are changed into by any one live wire by phase change-over switch
Power-switching circuit power supply is given with zero line, distribution box three-phase electricity is not required to and is converted to two-phase electricity, realize between three phase network phase
Weighing apparatus is converted to two-phase alternating current, reduces user cost and installation difficulty.
Further, in addition to for drive the first triode drive circuit, the drive circuit include first resistor,
Second resistance, 3rd resistor and the first diode, one end of the first resistor are connected with the first chip, the first resistor
The other end is connected with one end of second resistance and the negative terminal of the first diode respectively, the other end of second resistance and with the one or three pole
The grid of pipe is connected, and the anode of the first diode is connected with one end of 3rd resistor, and the second resistance and the first diode are simultaneously
Connection, the other end of the 3rd resistor are connected with the source electrode of the first triode.
Seen from the above description, the drive circuit is used to drive the first triode so that the first triode produces switch
Electric current.
Further, the power-sensing circuit includes the detection resistance of multi-channel parallel.
Seen from the above description, the detection resistance of multi-channel parallel is passed through, it is possible to achieve the output of different capacity.
Further, the current rectifying and wave filtering circuit includes the second diode, the 3rd diode, the four or two pole being sequentially connected
Pipe and the 5th diode, in addition to the 4th resistance, the 5th resistance, the 6th resistance, the first electric capacity, the second electric capacity and the two or three pole
Pipe, one end of first electric capacity are connected with transformer, and the other end of first electric capacity is connected with the second diode, and the five or two
One end of pole pipe is connected with one end of the second electric capacity and one end of the 6th resistance respectively, the other end and transformation of second electric capacity
Device is connected, and the other end of the 6th resistance is connected with the grid of the second triode, one end of the 6th resistance and the 4th electricity
One end of resistance is connected, and the other end of the 4th resistance is connected with one end of the 5th resistance, the other end of the 5th resistance with
The drain electrode of second triode is connected.
Seen from the above description, the current rectifying and wave filtering circuit is used for the ripple current for suppressing the DC voltage of input.
Further, the colour temperature adjusts circui includes multichannel different colours and the LED of parallel connection.
Seen from the above description, multichannel different colours and the LED of parallel connection can realize the output of different-colour.
Fig. 1-Fig. 4 is refer to, embodiments of the invention one are：
In the present embodiment, mark, a kind of LED power, including first switch SW1, second switch as shown in Fig. 2-Fig. 4
It is SW2, the 3rd switch SW3, power-switching circuit 4, the first chip U1, the second chip U2, the first triode Q2, transformer T1, whole
Flow filter circuit 9, colour temperature adjusts circui 10 and power-sensing circuit 11；
The input of the input of the first switch SW1 and three-phase alternating current is connected, the output end of the first switch SW1 and
The input of the power-switching circuit 4 is connected, and the first switch SW1 is phase change-over switch, and the first switch SW1 is used
Two-phase alternating current output is converted in inputting progress phase adjusted to three-phase alternating current；
The output end of the power-switching circuit 4 is connected with the first chip U1 and the second chip U2 respectively, for by two-phase
Alternating current input is converted to the dc source needed for the first chip U1 and the second chip U2；
The input of the second chip U2 is connected with the input of DALI signals, the output end and first of the second chip U2
Chip U1 first input end is connected, and the output end of the first chip U1 is connected with the first triode Q2 grid, and described
One triode Q2 source electrode is connected with the input of power-sensing circuit 11, drain electrode and the transformer T1 of the first triode Q2
Input be connected, the first triode Q2 be used for according to caused by the first chip U1 pwm signal produce switching current signal,
Switching current signal is transferred to power-sensing circuit 11 and transformer T1 respectively；
After the protection circuit that R31 and ZNR5 is formed, the constant-current circuit being made up of Q4 and Q5 produces the input of DALI signals
After raw constant current signal, constant current signal is provided to optocoupler SIC2 by D14, the constant current signal is entered by optocoupler SIC2 by R12
Second chip U2 processing, the second chip U2 processing produce light modulation and switching signal, and light modulation and switching signal are sent out by the second chip U2
Go out, be transferred to the first chip U1, the stable pwm signal triode of secondary control first again is produced by the first chip U1 internal arithmetics
Q2 produces stable output.
The second input with the first chip U1 respectively of the first output end and the second output end of the power-sensing circuit 11
End is connected with second switch SW2 input, the output end of the second switch SW2 and the first chip U1 the 3rd input phase
Even, the power-sensing circuit 11 is used to switching current signal being converted to current signal transfer to the first chip U1, Yi Jigen
Second switch SW2 switching is controlled according to required power output size；
The output end of the transformer T1 is connected with the input of current rectifying and wave filtering circuit 9, the current rectifying and wave filtering circuit 9 it is defeated
The input for going out end with the 3rd switch SW3 is connected, and the output end of the 3rd switch SW3 is connected with colour temperature adjusts circui 10；Institute
Transformer T1 is stated to be used to switching current signal being converted to direct voltage output to current rectifying and wave filtering circuit 9；The rectifying and wave-filtering electricity
Road 9 is used for the ripple current for suppressing the DC voltage of input；
The first chip U1 is used to being converted to the light modulation of input and switching signal into stable pwm signal output；
The second chip U2 is used to the DALI signals of input being converted to light modulation and switching signal exports；
Also include being used for the drive circuit for driving the first triode Q2, the drive circuit includes first resistor R25, second
Resistance R26,3rd resistor R27 and the first diode D22, one end of the first resistor R25 is connected with the first chip U1, described
The first resistor R25 other end is connected with second resistance R26 one end and the first diode D22 negative terminal respectively, second resistance
The R26 other end is connected with the grid with the first triode Q2, the first diode D22 anode and 3rd resistor R27 one end
It is connected, the second resistance R26 and the first diode D22 are in parallel, the other end of the 3rd resistor R27 and the first triode Q2
Source electrode be connected；
Power-switching circuit 4 provides stable direct-current working volts, the first core to the first chip U1 by starting resistance R4
Pwm signal is produced after piece U1 work, pwm signal passes through first resistor R25, second resistance R26,3rd resistor R27 and first
Diode D22 forms the first triode Q2 drive circuit, and the first triode Q2, which starts working, produces switching current, the switch
Electric current flows through first via detection resistance R15 by Q2 and obtains current signal, and the current signal enters the first chip U1 by R16,
First chip U1 produces the stable output of the first triode of secondary control Q2 generations again of stable pwm signal by internal arithmetic, if needing
Increase power output, then can be obtained by adjusting the second tunnel detection resistance R17 of change-over switch SW2 connections after increasing output
Current signal enters the first chip U1, the first chip U1 by R16 and produces stable pwm signal secondary control again by internal arithmetic
First triode Q2 produces stable output, if also needing to increase power output, can connect the by adjusting change-over switch SW2
Three tunnel detection resistance R14, obtain increasing the current signal after power output, the current signal enters the first chip by R16
U1, the first chip U1 produce the stable output of the first triode of secondary control Q2 generations again of stable pwm signal by internal arithmetic.
The power-sensing circuit includes the detection resistance of multi-channel parallel, in fig. 2, has three tunnel detection resistances, is respectively
R15, R14 and R17；
The current rectifying and wave filtering circuit includes the second diode D6, the 3rd diode D7, the 4th diode D8 being sequentially connected
With the 5th diode D9, in addition to the 4th resistance R34, the 5th resistance R35, the 6th resistance R6, the first electric capacity C5, the second electric capacity C8
With the second triode Q3, one end of the first electric capacity C5 is connected with transformer T1, the other end of the first electric capacity C5 and
Two diode D6 are connected, the 5th diode D9 one end respectively with the second electric capacity C8 one end and the 6th resistance R6 one end phase
Even, the other end of the second electric capacity C8 is connected with transformer T1, the other end and the second triode Q3 of the 6th resistance R6
Grid be connected, one end of the 6th resistance R6 is connected with one end of the 4th resistance R34, the 4th resistance R34 it is another
End is connected with the 5th resistance R35 one end, and the other end of the 5th resistance R35 is connected with the second triode Q3 drain electrode；
The colour temperature adjusts circui includes multichannel different colours and LED, such as Fig. 3 of parallel connection, and the present invention uses 3 paths of LEDs, point
Wei not LED+, LEDY- and LEDW-.
In summary, a kind of LED power provided by the invention, by for the first switch that three-phase phase is adjusted by three-phase
Three live wires of alternating current are changed into any one live wire and zero line and powered to power-switching circuit, are not required to the conversion of distribution box three-phase electricity
For two-phase electricity, realize equilibrium between three phase network phase and be converted to two-phase alternating current, reduce user cost and installation difficulty, pass through
The DALI signals of input are converted to second chip into light modulation and switching signal exports, and the first chip believes the light modulation of input and switch
Stable pwm signal output number is converted to, pwm signal passes through current rectifying and wave filtering circuit, colour temperature adjusts circui and power detection respectively
The stable function without fluctuation, DALI intelligent controls, adjustable color and power adjustable of circuit realiration, the present invention is reliable and stable, into
This low and high efficiency.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (6)
1. a kind of LED power, it is characterised in that including first switch, second switch, third switch, power-switching circuit, first
Chip, the second chip, the first triode, transformer, current rectifying and wave filtering circuit, colour temperature adjusts circui and power-sensing circuit；
The input of the first switch is connected with three-phase alternating current input, and the output end of the first switch turns with the power supply
The input for changing circuit is connected, and the first switch is used to be converted to two cross streams to three-phase alternating current input progress phase adjusted
Electricity output；
The output end of the power-switching circuit is connected with the first chip and the second chip respectively, for two-phase alternating current to be inputted
Be converted to the first chip and the dc source needed for the second chip；
The input of second chip is connected with the input of DALI signals, output end and the first triode of first chip
Grid is connected, and the source electrode of first triode is connected with the input of power-sensing circuit, the drain electrode of first triode
It is connected with the input of transformer, first triode is used to produce switching current signal according to pwm signal, by switching current
Signal is transferred to power-sensing circuit and transformer respectively；
The first output end and the second output end of the power-sensing circuit respectively with the second input of the first chip and second
The input of switch is connected, and the output end of the second switch is connected with the 3rd input of the first chip, the power detection
Circuit is used to switching current signal being converted to current signal transfer to the first chip, and according to required power output size
And control the switching of second switch；
The output end of the transformer is connected with the input of current rectifying and wave filtering circuit, the output end of the current rectifying and wave filtering circuit and the
The input of three switches is connected, and the output end of the 3rd switch is connected with colour temperature adjusts circui；The transformer is used to open
Close current signal and be converted to direct voltage output to current rectifying and wave filtering circuit；The current rectifying and wave filtering circuit is used for the direct current for suppressing input
The ripple current of voltage；
First chip is used to being converted to the light modulation of input and switching signal into stable pwm signal output；
The output end of second chip is connected with the first input end of the first chip, for the DALI signals of input to be converted to
Light modulation and switching signal output.
2. a kind of LED power according to claim 1, it is characterised in that the first switch is phase change-over switch.
3. a kind of LED power according to claim 1, it is characterised in that also include being used for the drive for driving the first triode
Dynamic circuit, the drive circuit include first resistor, second resistance, 3rd resistor and the first diode, the first resistor
One end is connected with the first chip, the other end of the first resistor respectively with one end of second resistance and the negative terminal of the first diode
It is connected, the other end of second resistance is connected with the grid with the first triode, the anode of the first diode and the one of 3rd resistor
End is connected, the second resistance and the first diodes in parallel, the source electrode phase of the other end of the 3rd resistor and the first triode
Even.
4. a kind of LED power according to claim 1, it is characterised in that the power-sensing circuit includes multi-channel parallel
Detection resistance.
5. a kind of LED power according to claim 1, it is characterised in that the current rectifying and wave filtering circuit includes being sequentially connected
The second diode, the 3rd diode, the 4th diode and the 5th diode, in addition to the 4th resistance, the 5th resistance, the 6th electricity
Resistance, the first electric capacity, the second electric capacity and the second triode, one end of first electric capacity are connected with transformer, first electric capacity
The other end be connected with the second diode, one end of the 5th diode respectively with one end of the second electric capacity and one end of the 6th resistance
It is connected, the other end of second electric capacity is connected with transformer, the other end of the 6th resistance and the grid of the second triode
It is connected, one end of the 6th resistance is connected with one end of the 4th resistance, the other end of the 4th resistance and the 5th resistance
One end is connected, and the other end of the 5th resistance is connected with the drain electrode of the second triode.
6. a kind of LED power according to claim 1, it is characterised in that it is different that the colour temperature adjusts circui includes multichannel
Color and the LED of parallel connection.
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| US20170105272A1 (en) * | 2014-03-27 | 2017-04-13 | Gooee Limited | Communication module |
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