CN104507239A - General energy-saving LED (light-emitting diode) drive power supply device - Google Patents
General energy-saving LED (light-emitting diode) drive power supply device Download PDFInfo
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- CN104507239A CN104507239A CN201510006250.0A CN201510006250A CN104507239A CN 104507239 A CN104507239 A CN 104507239A CN 201510006250 A CN201510006250 A CN 201510006250A CN 104507239 A CN104507239 A CN 104507239A
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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
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Abstract
The invention discloses a general energy-saving LED (light-emitting diode) drive power supply device. An independent circulating control unit is arranged, so that the voltage precision can be controlled within an extremely small range, the voltage distortion can be effectively restrained; a steady-current control unit is arranged, so that the linear continuity of the current is kept; an emulation power calculating unit is arranged for performing emulation calculating on output drive power, so that the output power can be supplemented and corrected; the whole circuit is strong in interference resistance, stable in output, and has a relatively high electrical energy utilization rate.
Description
Technical field
The present invention relates to field of LED drive, particularly relate to a kind of general-purpose energy-saving LED drive power device.
Background technology
Along with the development of human civilization, lighting apparatus enters in daily life already, traditional lighting source mainly contains incandescent lamp, fluorescent lamp, electricity-saving lamp etc., this type of lighting source technology comparative maturity all, but this type of lighting source exists, and the life-span is short, energy consumption is high, luminous efficiency is low, even some also can bring pollution, sending out a novel illumination light source is future trend.
LED is as new type light source, its main advantage compared with conventional light source has: volume is little, power consumption is little, it is little to generate heat, life-span length, fast response time, safety, environmental protection, current LED has not only been successfully applied to some general occasion illumination, and the demand that its special advantage is as high in luminous intensity, long service life, environmental protection can meet special occasions, along with the exhaustion day by day of resource, LED illumination will replace the lighting source that traditional lighting becomes main flow.
Current LED mainly adopts Alternating Current Power Supply, obtains constant electric current and voltage power to LED through converter, however this mode not only power factor (PF) is lower, and the distortion that can not effectively suppress input to bring; And light modulation is mainly by changing the electric current flowing through LED, and under different current conditions, luminous wavelength is different, and affect luminous efficiency, therefore such circuit exists the shortcomings such as antijamming capability is weak, output stability is poor, output accuracy is on the low side, power factor (PF) is low.
Summary of the invention
The object of the invention is to be achieved through the following technical solutions.
According to the embodiment of the present invention, propose a kind of general-purpose energy-saving LED drive power device, described LED drive power comprises: switch transition unit, driving switch power subsystem, independent loops control unit, analog photoelectricity isolated location, stabilized current power supply output unit, voltage detection unit, current detecting unit, simulated power computing unit, current stabilization control unit and pulse-width modulation light regulon; Wherein,
Described switch transition unit connects and is connected to stabilized current power supply output unit, the output of switch transition unit connects driving switch power subsystem, the output of driving switch power subsystem connects independent loops control unit respectively, analog photoelectricity isolated location, current stabilization control unit, pulse-width modulation light regulon, the output of analog photoelectricity isolated location is by independent loops control unit connecting valve converting unit, the output of described stabilized current power supply output unit also connects voltage detection unit and current detecting unit respectively, described voltage detection unit is connected simulated power computing unit with the output of current detecting unit, the output connecting valve converting unit of described simulated power computing unit, pulse-width modulation light regulon is connected to stabilized current power supply output unit by current stabilization control unit.
According to the embodiment of the present invention, before described switch transition unit, be also provided with EMI filter unit, DC converting unit, described EMI filter unit, DC converting unit connecting valve converting unit successively.
According to the embodiment of the present invention, be also provided with wireless transmit/receive units, described wireless transmit/receive units connects pulse-width modulation light regulon.
According to the embodiment of the present invention, alternating current outputs to switch transition unit after EMI filter unit and DC converting unit, the driving switch power subsystem output voltage detected is passed through analog photoelectricity Isolation input to independent loops control unit by analog photoelectricity isolated location, driving switch power subsystem gives independent loops control unit respectively, analog photoelectricity isolated location, current stabilization control unit, pulse-width modulation light regulon is powered, independent loops control unit control switch converting unit exports expects voltage, current stabilization control unit controls stabilized current power supply output unit and exports expectation electric current, pulse-width modulation light regulon receives the remote control light modulating signal that wireless transmit/receive units receives, and by current stabilization control unit, Dimming operation is carried out to described LED, described voltage detection unit and current detecting unit detect output voltage and the electric current of stabilized current power supply output unit respectively, described simulated power computing unit calculates the driving power of emulation according to the electric current and voltage detected, and this Simulation drive performance number is sent to switch transition unit, power output is corrected.
According to the embodiment of the present invention, described independent loops control unit comprises linear scale integral adjustment circuit, amplifying circuit, adder circuit, initializing circuit, comparison circuit, reset-set circuits for triggering, and described independent loops control unit obtains reference voltage signal by electric resistance partial pressure from driving switch power subsystem.
General-purpose energy-saving LED drive power device of the present invention, is provided with independent loops control unit, voltage accuracy can be controlled, in minimum scope, effectively can suppress voltage distortion; Current stabilization control unit is set, electric current can be made to maintain linear continuum; Simulated power computing unit is set, simulation calculation is carried out to output driving power, can revise power output; Whole circuit anti-interference ability is strong, and stable output, has higher utilization rate of electrical.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Figure 1 show the general-purpose energy-saving LED drive power apparatus structure schematic diagram according to embodiment of the present invention;
Figure 2 illustrate the switch transition element circuit schematic diagram according to embodiment of the present invention;
Figure 3 show the independent loops control unit circuit theory diagrams according to embodiment of the present invention;
Fig. 4 illustrate the current stabilization control unit circuit theory diagrams according to embodiment of the present invention;
Fig. 5 illustrate the EMI filter unit circuit theory diagrams according to embodiment of the present invention;
Figure 6 show the pulse-width modulation light regulon circuit theory diagrams according to embodiment of the present invention
Figure 7 show the analog photoelectricity isolated location circuit theory diagrams according to embodiment of the present invention;
Fig. 8 illustrate the voltage detection unit circuit theory diagrams according to embodiment of the present invention;
Figure 9 show the current detecting unit circuit theory diagrams according to embodiment of the present invention;
Figure 10 show the simulated power computing unit circuit theory diagrams according to embodiment of the present invention.
Embodiment
Below with reference to accompanying drawings illustrative embodiments of the present disclosure is described in more detail.Although show illustrative embodiments of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the execution mode of setting forth here.On the contrary, provide these execution modes to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
According to the embodiment of the present invention, a kind of general-purpose energy-saving LED drive power device is proposed, as shown in Figure 1, described LED drive power comprises: EMI filter unit, DC converting unit, switch transition unit, driving switch power subsystem, independent loops control unit, analog photoelectricity isolated location, stabilized current power supply output unit, voltage detection unit, current detecting unit, simulated power computing unit, current stabilization control unit, pulse-width modulation light regulon and wireless transmit/receive units; Wherein,
Described EMI filter unit, DC converting unit, switch transition unit connects successively and is connected to stabilized current power supply output unit, the output of switch transition unit connects driving switch power subsystem, the output of driving switch power subsystem connects independent loops control unit respectively, analog photoelectricity isolated location, current stabilization control unit, pulse-width modulation light regulon, the output of analog photoelectricity isolated location is by independent loops control unit connecting valve converting unit, the output of described stabilized current power supply output unit also connects voltage detection unit and current detecting unit respectively, described voltage detection unit is connected simulated power computing unit with the output of current detecting unit, the output connecting valve converting unit of described simulated power computing unit, pulse-width modulation light regulon is connected to stabilized current power supply output unit by current stabilization control unit, described wireless transmit/receive units connects pulse-width modulation light regulon, wherein, alternating current outputs to switch transition unit after EMI filter unit and DC converting unit, the driving switch power subsystem output voltage detected is passed through analog photoelectricity Isolation input to independent loops control unit by analog photoelectricity isolated location, driving switch power subsystem gives independent loops control unit respectively, analog photoelectricity isolated location, current stabilization control unit, pulse-width modulation light regulon is powered, independent loops control unit control switch converting unit exports expects voltage, current stabilization control unit controls stabilized current power supply output unit and exports expectation electric current, pulse-width modulation light regulon receives the remote control light modulating signal that wireless transmit/receive units receives, and by current stabilization control unit, Dimming operation is carried out to described LED, described voltage detection unit and current detecting unit detect output voltage and the electric current of stabilized current power supply output unit respectively, described simulated power computing unit calculates the driving power of emulation according to the electric current and voltage detected, and this Simulation drive performance number is sent to switch transition unit, power output is corrected.
As shown in Figure 2, described switch transition unit comprises chip U1, field-effect transistor VT, transformer T, winding L a, winding L b, winding L c, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, electric capacity C15, electric capacity C16, electric capacity C17, electric capacity C18, electric capacity C19, electric capacity C20, diode D5, diode D6, diode D7, diode D8, diode D9, diode D10, inductance L 3, inductance L 4, the pin one of described chip U1 and one end of electric capacity C4, a detection as switch transition unit after one end connection of resistance R1 returns input V1, and pin two is connected with one end of resistance R2, the other end of the 9th pin and resistance R1, one end of resistance R3, one end of electric capacity C5 connects, and pin 7 is connected with one end of resistance R4, the other end of pin 5 and resistance R4, one end of electric capacity C6 connects, and pin 6 is connected with one end of resistance R5, and pin 8 is connected with the positive pole of electric capacity C7, pin one 3 and pin one 5, one end of resistance R6, the positive pole of electric capacity C8, power supply is connect, the other end of pin one 6 and resistance R2 after one end connection of inductance L 3, one end of electric capacity C9 connects, and pin one 1 is connected with one end of resistance R7, one end of pin one 0 and electric capacity C10, one end of resistance R8 connects, one end of pin one 2 and resistance R9, the other end of electric capacity C10, the negative pole of electric capacity C8, the other end of electric capacity C9, the negative pole of electric capacity C7, the other end of resistance R5, the other end of electric capacity C6, the other end of electric capacity C5, one end of electric capacity C11 connects rear ground connection, and other pins are all built on stilts, the other end of inductance L 3 is connected with one end of the negative pole of diode D5, electric capacity C12, transformer is made up of three windings, one end of winding La and the positive pole of diode D6, one end of resistance R10, one end of electric capacity C13, the other end of resistance R6, be connected with the output of DC converting unit after the other end connection of electric capacity C11, the other end of winding La and the positive pole of diode D7, the drain electrode of field-effect transistor VT connects, one end of winding Lb is connected with the positive pole of diode D8, the other end of winding Lb and the negative pole of electric capacity C14, one end of electric capacity C15, the negative pole of electric capacity C16, the negative pole of electric capacity C17, one end of electric capacity C18, an output interface J4 as switch transition unit after one end connection of electric capacity C19 connects, one end of winding Lc is connected with the positive pole of diode D9, the other end of winding Lc and the negative pole of electric capacity C20, the other end of electric capacity C12, the other end of electric capacity C19, the negative pole of diode D10 connects rear ground connection, the grid of field-effect transistor VT is connected with the other end of resistance R7, as an output V2 of switch transition unit after source electrode is connected with the other end of resistance R8, the other end of resistance R9, one end of the negative pole of diode D8 and the positive pole of electric capacity C14, electric capacity C15, the positive pole of electric capacity C16, one end of inductance L 4 are connected, an output interface J5 as switch transition unit after the other end of inductance L 4 is connected with the other end of the positive pole of electric capacity C17, electric capacity C18 connects, as another output V3 of switch transition unit after the negative pole of diode D9 is connected with the positive pole of the positive pole of electric capacity C20, diode D5, one end of resistance R11, the other end of resistance R11 is connected with the positive pole of diode D10.
Described stabilized current power supply output unit comprises Hall current-sensing circuit CHB-25NP/SP5, break-make triode Q1, load D4, energy storage inductor L3, Schottky diode D5 form, and inductance L 3 and Schottky diode D5 are the effects playing afterflow at break-make triode Q1 blocking interval.Hall current-sensing circuit CHB-25NP/SP5 detects current precision within 0.8%, and the size accurately can measuring output current turns back in current stabilization control unit, realizes output current and control circuit isolation simultaneously.
Described independent loops control unit comprises linear scale integral adjustment circuit, N1/N2 times of amplifying circuit (N1/N2 is transformer voltage input side voltage outlet side turn ratio), adder circuit, initializing circuit, comparison circuit, reset-set circuits for triggering, wherein linear scale integral adjustment circuit, N1/N2 times of amplifying circuit, adder circuit is by amplifier and peripheral circuit composition thereof, initializing circuit is by amplifier, reset switch and peripheral circuit and composition, comparison circuit is made up of comparator, reset-set circuits for triggering are made up of reset-set flip-flop and clock pulse generator.Independent loops control unit obtains reference voltage signal by electric resistance partial pressure from driving switch power subsystem.As shown in Figure 3, the voltage of independent loops control unit is connected with resistance R16 with 3 pins of amplifier U1A respectively with reference to after end Vref series resistor R18, ground connection GND1 after the other end series capacitance C10 of resistance R16, 2 pins of amplifier U1A are received after return voltage VC1 series resistor R19, 2 pin contact resistance R23 of amplifier, 1 pin of amplifier U1A is received after resistance R23 series capacitance C12, 1 pin of amplifier U1A is connected with 5 pins of amplifier U1B, 6 pins of amplifier U1B are connected with one end of resistance R24 and pass through resistance R30 ground connection GND1, 7 pins of another termination amplifier U1B of resistance R24, 7 pins of amplifier U1B are connected to 10 pins of amplifier U1C by resistance R15, 10 pins of amplifier U1C are by resistance R14 ground connection GND1, input electric cur-rent measure end IS-1 receives 10 pins of amplifier U1C by resistance R20, 9 pins of amplifier U1C are by resistance R29 ground connection GND1, the two ends of resistance R28 connect 8 of amplifier U1C respectively, 9 pins, 8 pins of amplifier U1C receive 12 pins of amplifier U1D by resistance R21, 12 pin ground connection GND1, 12 of amplifier U1D is connected to after resistance R17 series capacitance C11 is in parallel with reset switch S1 again, 14 pins, resistance R26, 14 pins of a termination amplifier U1D after R27 series connection, other end ground connection GND1, resistance R26, the link of R27 is connected to 13 ends of amplifier U1D, 14 pins of amplifier U1D are connected to 3 pins of comparator U2A by resistance R22, 7 pins of amplifier U1B are connected to 2 pins of comparator U2A by resistance R25, 1 pin of comparator U2A connects the RN end of reset-set flip-flop, the SN terminated clock pulse signal of reset-set flip-flop, the QN end of reset-set flip-flop receives the reset terminal of reset switch S1, the Q end of reset-set flip-flop is connected to the grid of break-make triode Q1.Independent loops control unit is connected with the current sampling resistor of switch transition unit, samples to the input current of switch converting unit, and according to sampled signal adjustment control signal.Independent loops control unit is sampled to output voltage by analog photoelectricity isolated location, and according to sampled signal adjustment control signal.Independent loops control unit control switch converting unit, effectively can suppress input skew, improve precision and the response speed of output voltage, by sampling input current signal and output voltage signal, according to expecting that voltage signal obtains controlling the signal of break-make triode Q1 break-make, when input voltage exists distortion, can the mean value of output voltage be made to equal reference value in a switch periods, suppress input skew.
Described independent loops control unit controls output voltage, voltage accuracy can be controlled within 1%, when distortion appears in input terminal voltage, can output voltage be made to equal voltage reference value in a switch periods, effectively suppress input voltage to distort the impact brought.
Described current stabilization control unit comprises subtraction circuit, linear scale integral adjustment circuit, proportion adjustment circuit, comparison circuit, a NAND gate and a photoelectric isolating circuit.Wherein subtraction circuit, linear scale integral adjustment electricity routing amplifier and peripheral circuit composition thereof, proportion adjustment electricity routing amplifier, amplitude limiter and peripheral circuit composition, comparison circuit is made up of comparator, triangular-wave generator and peripheral circuit.Described current stabilization control unit obtains from driving switch power subsystem the size exporting reference current by electric resistance partial pressure.As shown in Figure 4, the expectation load current end IS-O* of current stabilization control unit is connected to 3 pins of amplifier U4A by resistance R33,3 pins of amplifier U4A are by resistance R39 ground connection GND3,2 pins of amplifier U4A are connected to 8 pins of amplifier U4C by resistance R37,1,2 pins being connected in parallel on amplifier U4A of resistance R41.1 pin of amplifier U4A receives 5 pins of amplifier U4B by resistance R35, one end ground connection GND3 after resistance R32 series capacitance C13, the other end receives 5 pins of amplifier U4B, load current IS-O connects 6 pins of amplifier U4B by resistance R38, 6 of amplifier U4B is parallel to after electric capacity C14 series resistance R46, 7 pins, 7 pins of amplifier U4B are by resistance R31 ground connection GND3, 10 pins of amplifier U4C are received by resistance R34, receive the input of integration amplitude limiter JF1 simultaneously, the output of integration amplitude limiter JF1 receives 9 pins of amplifier U4C by resistance R40, 8 pins of amplifier U4C are received by resistance R45, 3 pins of comparator U7A are received by resistance R36, 2 pins of a termination comparator U7A after resistance R42 connects with triangular-wave generator SJ1, other end ground connection GND3, 1 pin of comparator U7A receives the B end of NAND gate U5, pulse-width modulation input receives the A end of NAND gate U5, the output Y of NAND gate U5 receives the light-emitting diode negative pole end of photoelectric isolating circuit U6 by resistance R44, the positive terminal ground connection GND3 of light-emitting diode, second driving switch power supply VCC2 connects the collector electrode of triode by resistance R43, collector electrode exports the grid being connected to break-make triode Q2, grounded emitter GND2.
Current stabilization control unit adopts anti-saturation controller, and anti-saturation can effectively prevent from occurring saturation integral phenomenon in control procedure, makes controller maintain linear continuum, reaches constant output current, improve the object of control precision.Current stabilization control unit adopts conditioning technology anti-saturation algorithm, makes the electric current of stabilized current power supply output unit maintain linear continuum, reduces overshoot, improve control precision, make system have good dynamic quality and stable state accuracy, improve the precision of output current.
As shown in Figure 5, the ac input end ACI+ of EMI filter unit receives the left upper end of common mode choke T2 after shock resistance resistance RT1, ac input end ACI-receives the lower-left end of common mode choke T1 through fuse-link F1, is parallel to left upper end and the lower-left end of common mode choke T2 after piezo-resistance R47 safe electric capacity C15 in parallel again.Ac output end ACO+ and ac output end ACO-is connected respectively to after the upper right side of common mode choke T2 and bottom righthand side safe electric capacity C16 in parallel.
Described pulse-width modulation light regulon comprises 555 timers, resistance R51, R53, variable resistor R52, diode D13, D14, electric capacity C17, C18, by the duty ratio regulating the size of variable resistor R52 to get final product regulation output pulse, reaches the object of light modulation.As shown in Figure 6, 3rd driving switch power supply VCC3 receives 4 of 555 timer U11 respectively, one end of 8 pins and resistance R51, the other end of resistance R51 receives one end of variable resistance R52, the other end of variable resistance R52 receives the negative pole of diode D14, the intermediate ends of variable resistance R52 receives 7 pins of 555 timers and the positive pole of diode D13, the negative pole of diode D13 and the positive pole of diode D14 receive 6 of 555 timers, one end of 2 pins and electric capacity C18, the other end ground connection GND3 of electric capacity C18, 5 pins of the one termination 555 timer U11 of electric capacity C17, other end ground connection GND3, the 1 pin ground connection GND3 of 555 timer U11, 3 pins connect pulse-width modulation output.
Described analog photoelectricity isolated location comprises linear photoelectric isolation circuit HCNR201, input resistance R50, feedback resistance R48, voltage stabilizing adjusting resistance R49, is held by the output voltage detected through the VC1 of analog photoelectricity Isolation input to independent loops control unit.As shown in Figure 7, detect voltage Vin and receive 2 pins of amplifier U8A and 3 pins of photoelectric isolating circuit U9 by resistance R50, the 3 pin ground connection GND2 of amplifier U8A, 1 pin receives 1 pin of photoelectric isolating circuit U9 by resistance R49,4, the 5 pin ground connection GND2 of photoelectric isolating circuit U9,2 pins meet VCC2,7,8 pins are unsettled, 6 pins receive 2 pins of amplifier U10A, 1 pin that 2 pins of amplifier U10A receive amplifier U10A by resistance R48 exports return voltage VC1, the 3 pin ground connection GND1 of amplifier U10A.
Detect voltage Vin and turn back to independent loops control unit after photoelectric isolating circuit U9 isolates, main circuit and control circuit are effectively isolated.In practical operation, photoelectric isolating circuit can simultaneously make R50 and R48 resistance equal in design process, can realize the size isolation such as input and output.
As shown in Figure 8, described voltage detection unit comprises resistance R12, resistance R13, slip variable resistance Rx; One end of resistance R12 is connected with one end of slip variable resistance Rx, other end ground connection, the other end of slip variable resistance Rx is connected with one end of resistance R13, sliding end as the output of voltage detection unit, the other end of resistance R13 is connected with the output of stabilized current power supply output unit.
As shown in Figure 9, described current detecting unit comprises amplifier U2, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, electric capacity C21, electric capacity C22, electric capacity C23, inductance L 5; The pin one of amplifier U2 is connected with one end of one end of resistance R14, resistance R15, one end of electric capacity C21, pin two is connected with one end of resistance R16, the other end of pin 3 and resistance R15, the other end of electric capacity C21, one end of resistance R17 are connected, pin 4 ground connection, pin 5 is connected with the other end of resistance R14, one end of pin 6 and resistance R18, one end of resistance R19, one end of electric capacity C22 are connected, as the output of current detecting unit after pin 7 is connected with the other end of resistance R18, the other end of electric capacity C22, pin 8 is connected with power supply; The other end of resistance R16 is connected with one end of one end of resistance R20, electric capacity C23, one end of inductance L 5; The other end of resistance R20 is connected rear ground connection with the other end of electric capacity C23; The other end of resistance R19, the equal ground connection of the other end of resistance R17; The other end of inductance L 5 is connected with the output of stabilized current power supply output unit.
As shown in Figure 10, described simulated power computing unit comprises emulation and to be multiplied circuit U 3, resistance R21, resistance R22, resistance R23; Emulate the pin one of circuit U 3 that is multiplied to be connected with the output of current detecting unit, ground connection after pin two is connected with one end of pin 4, pin 5, resistance R21, pin 3 is connected with the output of voltage detection unit, the other end of pin 6 and resistance R21, one end of resistance R22, one end of resistance R23 are connected, pin 7 is connected with the other end of resistance R23, and pin 8 is connected with power supply; The other end of resistance R22 returns input V1 be connected with one of switch transition unit.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (5)
1. a general-purpose energy-saving LED drive power device, described LED drive power comprises: switch transition unit, driving switch power subsystem, independent loops control unit, analog photoelectricity isolated location, stabilized current power supply output unit, voltage detection unit, current detecting unit, simulated power computing unit, current stabilization control unit and pulse-width modulation light regulon; Wherein,
Described switch transition unit connects and is connected to stabilized current power supply output unit, the output of switch transition unit connects driving switch power subsystem, the output of driving switch power subsystem connects independent loops control unit respectively, analog photoelectricity isolated location, current stabilization control unit, pulse-width modulation light regulon, the output of analog photoelectricity isolated location is by independent loops control unit connecting valve converting unit, the output of described stabilized current power supply output unit also connects voltage detection unit and current detecting unit respectively, described voltage detection unit is connected simulated power computing unit with the output of current detecting unit, the output connecting valve converting unit of described simulated power computing unit, pulse-width modulation light regulon is connected to stabilized current power supply output unit by current stabilization control unit.
2. a device as claimed in claim 1, was also provided with EMI filter unit and DC converting unit before described switch transition unit, described EMI filter unit, DC converting unit connecting valve converting unit successively.
3. a device as claimed in claim 2, is also provided with wireless transmit/receive units, and described wireless transmit/receive units connects pulse-width modulation light regulon.
4. a device as claimed in claim 3, alternating current outputs to switch transition unit after EMI filter unit and DC converting unit, the driving switch power subsystem output voltage detected is passed through analog photoelectricity Isolation input to independent loops control unit by analog photoelectricity isolated location, driving switch power subsystem gives independent loops control unit respectively, analog photoelectricity isolated location, current stabilization control unit, pulse-width modulation light regulon is powered, independent loops control unit control switch converting unit exports expects voltage, current stabilization control unit controls stabilized current power supply output unit and exports expectation electric current, pulse-width modulation light regulon receives the remote control light modulating signal that wireless transmit/receive units receives, and by current stabilization control unit, Dimming operation is carried out to described LED, described voltage detection unit and current detecting unit detect output voltage and the electric current of stabilized current power supply output unit respectively, described simulated power computing unit calculates the driving power of emulation according to the electric current and voltage detected, and this Simulation drive performance number is sent to switch transition unit, power output is corrected.
5. a device as claimed in claim 4, described independent loops control unit comprises linear scale integral adjustment circuit, amplifying circuit, adder circuit, initializing circuit, comparison circuit, reset-set circuits for triggering, and described independent loops control unit obtains reference voltage signal by electric resistance partial pressure from driving switch power subsystem.
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| CN105764184A (en) * | 2016-03-17 | 2016-07-13 | 宁波市江东精诚自动化设备有限公司 | Wireless intelligent dimming switch |
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| CN102202450A (en) * | 2011-07-11 | 2011-09-28 | 江南大学 | Light-adjustable high-power LED driving power supply |
| CN203015238U (en) * | 2013-01-04 | 2013-06-19 | 电子科技大学中山学院 | Off-line LED driving power supply |
| CN203942687U (en) * | 2014-07-03 | 2014-11-12 | 苏州鸿益丰光电有限公司 | A kind of isolated form constant-current dimming circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105764184A (en) * | 2016-03-17 | 2016-07-13 | 宁波市江东精诚自动化设备有限公司 | Wireless intelligent dimming switch |
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Application publication date: 20150408 |