CN201750591U - Self-adaptive light emitting diode (LED) drive power supply - Google Patents
Self-adaptive light emitting diode (LED) drive power supply Download PDFInfo
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- CN201750591U CN201750591U CN2010202174861U CN201020217486U CN201750591U CN 201750591 U CN201750591 U CN 201750591U CN 2010202174861 U CN2010202174861 U CN 2010202174861U CN 201020217486 U CN201020217486 U CN 201020217486U CN 201750591 U CN201750591 U CN 201750591U
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Abstract
The utility model discloses a self-adaptive LED drive power supply which comprises an input filtration and rectification unit which is connected with the input end of the power supply, a power factor correction (PFC) unit which is connected with the output end of the input filtration and rectification unit, a voltage conversion unit which is connected with the output end of the PFC unit, and an output unit which is connected with the output end of the voltage conversion unit, wherein the output end of the output unit is connected with an LED lamp. The self-adaptive LED drive power supply additionally comprises a digital signal processor (DSP) main control chip unit and an isolation drive unit. The DSP main control chip unit sends out a pulse width modulation (PWM) signal to control the isolation drive unit and further to control the voltage conversion of the voltage conversion unit. Since the DSP main control chip unit is used for conducting intelligent management to the entire digital LED drive circuit, the utility model has the advantages that the optimum configuration of the long-service-life power supply and an LED load is realized, the optical efficiency is improved to the utmost extent, the energy is saved, the intelligence is very high, and the problem caused by the inconsistency of the LED itself in LED application is thoroughly solved.
Description
Technical field
The utility model relates to a kind of driving power, particularly a kind of adaptive LED driving power.
Background technology
High brightness light emitting diode LED is just becoming the green illumination light source of a new generation with plurality of advantages such as its energy-saving and environmental protection, efficient, long-lives.Manufacturing high efficiency, low cost, High Power Factor, long-life driving power are to guarantee LED luminescent quality and overall performance and promote the key that the LED industry develops rapidly.
At present, normal lighting occasion in the civil power input, the normal employing comprises the circuit that adapter and driver two parts come driving LED to light, and the function of adapter is to realize that input power factor proofreaies and correct (PFC) and AC/DC conversion (AC-DC), for the back grade provides burning voltage.Driver is made up of the LED special driving chip, for the steady operation of high-brightness LED provides constant current.Two-stage type LED driving power can guarantee the luminescent quality of LED preferably, but has shortcomings such as device is many, volume is big, the life-span is short.
Hat Deco skill company releases a power management IC, and its power source design can not have capacitor at the AC input.But the defective of this type of technology is to be output as pulse current, will cause the LED stroboscopic, to the generation harmful effect of LED lamp pearl life-span.
The whole world leading supplier of high voltage integrated circuit Power Integrations company releases the method for designing of a efficiency up to 92% LED street lamp application power supply.HiperPLC power-supply controller of electric based on company designs, it has been integrated into single being integrated in the circuit simultaneously with power factor correction (PFC) and resonance (LLC) controlled function, realization is simple and have cost-benefit circuit design, but this technology lacks the intelligent controlled function to led chip.
LED is the same in theory, and all be the luminous diode of energy, and in fact the electrical property of all LED all is discrepant: the production technology of each producer is inconsistent, even differs greatly, and the technology of the different time of same producer all is discrepant exactly; The purity requirement of semi-conducting material of producing light-emitting diode simultaneously is very high, the purity of the semiconductor source material that different manufacturers uses is discrepant, this just makes the luminous intensity of LED and drive current is incomplete same, perhaps differ greatly, and the difference of anti-overcurrent capability and heating is also just natural different; Because packaging technology and encapsulating material is different, make that whole heat-sinking capability is different.Be not difficult to find out that thus there is the very big difference between the individuality in the LED light-emitting diode, if each lamp is only used a LED, that is fine control, and is the real long-life, and for example the power supply indicator on television set, the DVD is exactly like this; And when making lighting with LED, not not just with single LED, but with a plurality of, or thousands of LED up to a hundred line up the array place in circuit, moreover the brightness that needs is not that indicator light can be accomplished just, and electric current big, little brightness all will weaken, and the life-span is had a greatly reduced quality, just do not broken down even cause in dispatching from the factory; Because of the otherness of LED always exists, the Lian Luzhong that forms at a plurality of LED, when several breaking down, normally short circuit can make the electric current increase and damages other LED.The consequence that inconsistency that Here it is is brought also is one of factor of restriction LED industry development.
In sum, because single led light source is low-voltage, constant current driving element, its luminous intensity is by the size of current decision of flowing through LED, electric current is crossed the decay that can cause LED light by force, electric current is crossed the weak luminous intensity that can influence LED, and therefore, the driving of LED need provide constant-current supply, fail safe to guarantee that great power LED uses reaches desirable luminous intensity simultaneously.In addition, at the LED lighting field, embody energy-conservation and feature of long life, it is most important to choose the LED driving power, does not have the coupling of good driving power, and the advantage of LED illumination can't be brought into play.Therefore realize the LED driving power to the self adaptation of led chip and the long-life of intelligent management and driving power, solve LED use in because the defective that the inconsistency of himself causes is a technical problem of being badly in need of solution at present.
The utility model content
The purpose of this utility model is to solve the technical problem that aforementioned prior art exists, a kind of adaptive LED driving power is provided, it can realize self adaptation and the intellectualized management of LED driving power to led chip, solve LED use in because the defective that the inconsistency of himself causes, the lifting of indexs such as promotion LED light efficiency, life-span, reliability.
The technical scheme that realizes the utility model purpose is a kind of adaptive LED driving power, comprising: the input filter rectification unit that links to each other with power input; The PFC unit that links to each other with input filter rectification unit output; The voltage transformation module that links to each other with PCF unit output; The output unit that links to each other with the voltage transformation module output; The output of described output unit links to each other with the LED light fixture; Also comprise DSP main control chip unit and isolation drive unit; Described DSP main control chip unit sends the PWM pulse-width signal and controls described isolation drive unit, controls the voltage transitions of voltage transformation module then.
The electric capacity that adopts in the described input filter rectification unit is nonpolarity solid electric capacity; The electric capacity that adopts in the described output unit is the macromolecular solid body capacitance.
Transformer in the described voltage transformation module is integrated transformer.
Described integrated transformer is that high-power outputting inductance and main transformer magnetic are synthetic; The employing multi-layer PCB board is a winding; Embed FERRITE CORE in the copper strips, copper strips is divided into two sections, respectively as the primary outlet bag and the high-power outputting inductance line bag of integrated transformer.
Described DSP main control chip unit adopts fuzzy prediction algorithm routine control technology, and the chip model of employing is 56F8323.
Described input filter rectification unit provides working power for DSP main control chip unit; The self feeding that described voltage transformation module produces through the accessory power supply unit for DSP main control chip unit provide work required keep power supply.
The adaptive LED driving power also comprises the current feedback unit; Described output unit feeds back to DSP main control chip unit by the current feedback unit with the current signal of circuit.
The adaptive LED driving power also comprises temperature detecting unit and voltage-current characteristic detecting unit; Described temperature detecting unit comprises the temperature-detecting device on the fin that is arranged on the LED light fixture, and this temperature-detecting device feeds back to DSP main control chip unit with the temperature data that detects; Described voltage-current characteristic detecting unit feeds back to DSP main control chip unit with the voltage-current characteristic data of detected LED light fixture.
The adaptive LED driving power also comprises the driven in synchronism unit; Described DSP main control chip unit sends the PWM pulse-width signal and controls described driven in synchronism unit, controls output unit then.
The adaptive LED driving power also comprises and the two-way PC communication interface unit that is connected in DSP main control chip unit, is used for the adaptive LED driving power is carried out remote monitoring.
After having adopted technique scheme, the utlity model has following good effect: (1) the utility model adopts DSP main control chip unit that whole digital LED drive circuit is carried out intelligent management, adopt the prediction algorithm program control technology simultaneously, reach the control of adaptive fuzzy briliancy, realize the best configuration of long-life power supply and LED load, farthest improve light efficiency, energy savings; Adopt the fuzzy prediction algorithm, realize detecting real-time, the LED lamp pearl life-span is carried out early warning, realize the telemanagement of net connection from now on led chip.Thereby to the drive current of the LED of different LED wicks, an order and different model, driving voltage can both reach best matching effect; Can determine electric current, voltage and automatic heat management automatically according to loading condition; User-friendly for operation, do not need to customize specification especially, easy to use; Controllability is strong, and the entire work process curve connects by network, and monitoring in real time comes into plain view the operator, and is very intelligent, has thoroughly solved the problem of bringing owing to the inconsistency of himself during LED uses.
(2) existing water-soluble electric capacity can freeze at low temperatures, and influence is used, so the utility model adopts nonpolarity solid electric capacity to substitute the common electrical electrolysis condenser in input filter rectification unit; In the output filter circuit of output unit, the macromolecular solid body capacitance has improved the output current precision, greatly reduces output ripple, prolongs power source life, guarantees to reach 100,000 hours useful life.
(3) the utility model adopts integrated transformer, make the driving power miniaturization, employing is winding with the PCB layout, owing to be that wiring is positive conductor, the high-frequency current in planar conductor also can be tending towards the edge away from the center and flow whole conductors but electric current is still flowed through, skin effect can reduce greatly, and can reach very big current density, because the little loss of iron core is low, can access higher efficient again.Therefore can make that adaptive LED driving power volume of the present utility model is little, energy consumption is low, good stability, guarantee the consistency of producing in enormous quantities.
(4) the utility model is controlled each detecting unit by DSP main control chip unit, can carry out early warning to the life-span and the fault of led chip, be fit to large-area illuminations such as network management LED street lamp, supermarket, production site, as long as just fault can be found at once, reach the purpose of telemanagement by computer.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the structural representation of the integrated transformer of voltage transformation module of the present utility model.
Label is in the accompanying drawing:
Input filter rectification unit 1, PFC unit 2, voltage transformation module 3, output unit 4, LED light fixture 5, DSP main control chip unit 6, isolation drive unit 7, current feedback unit 8, temperature detecting unit 9, voltage-current characteristic detecting unit 10, driven in synchronism unit 11, PC communication interface unit 12, accessory power supply unit 13.
Embodiment
(embodiment 1)
See Fig. 1, the adaptive LED driving power of present embodiment comprises: input filter rectification unit 1, PCF unit 2, voltage transformation module 3, output unit 4, DSP main control chip unit 6, isolation drive unit 7, current feedback unit 8, temperature detecting unit 9, voltage-current characteristic detecting unit 10, driven in synchronism unit 11, PC communication interface unit 12 and accessory power supply unit 13.
Input filter rectification unit 1 links to each other with power input.PFC unit 2 links to each other with input filter rectification unit 1 output.Voltage transformation module 3 links to each other with PCF unit 2 outputs.Output unit 4 links to each other with voltage transformation module 3 outputs.The output of output unit 4 links to each other with LED light fixture 5.DSP main control chip unit 6 sends the PWM pulse-width signal and controls described isolation drive unit 7, controls the voltage transitions of voltage transformation module 3 then.Input filter rectification unit 1 provides working power for DSP main control chip unit 6.The self feeding that voltage transformation module 3 produces through accessory power supply unit 13 for DSP main control chip unit 6 provide work required keep power supply.Output unit 4 feeds back to DSP main control chip unit 6 by current feedback unit 8 with the current signal of circuit.Temperature detecting unit 9 comprises the temperature-detecting device on the fin that is arranged on LED light fixture 5, this temperature-detecting device feeds back to DSP main control chip unit 6 with the temperature data that detects, thereby make DSP main control chip unit 6 can grasp the temperature rise of LED light fixture 5 in real time, reasonably to regulate and control.Whether voltage-current characteristic detecting unit 10 feeds back to DSP main control chip unit 6 with the voltage-current characteristic data of detected LED light fixture 5, thereby make 6 each LED light fixture 5 brightness of energy real-time judge of DSP main control chip unit consistent.DSP main control chip unit 6 sends the PWM pulse-width signal and controls described driven in synchronism unit 11, controls output unit 4 then.PC communication interface unit 12 and 6 two-way connections of DSP main control chip unit are used for the adaptive LED driving power is carried out remote monitoring.
In order to improve the useful life of adaptive LED driving power, the electric capacity that adopts in the input filter rectification unit 1 is nonpolarity solid electric capacity; The electric capacity that adopts in the output unit 4 is the macromolecular solid body capacitance.
In order to make the miniaturization of adaptive LED driving power, the transformer in the voltage transformation module 3 is integrated transformer.Specifically see shown in Figure 2ly, integrated transformer is that high-power outputting inductance and main transformer magnetic are synthetic; The employing multi-layer PCB board is a winding; Embed FERRITE CORE in the copper strips, copper strips is divided into two sections, respectively as the primary outlet bag and the high-power outputting inductance line bag of integrated transformer.
DSP main control chip unit 6 adopts fuzzy prediction algorithm routine control technology, and the chip model of employing is 56F8323.By the prediction algorithm control technology of DSP, realize the adjusting of fuzzy self-adaption briliancy, make the adaptive LED driving power can reach the cooperation of the best automatically with different led chips; Automatically regulate current/voltage, make LED light efficiency maximum, and realize light modulation, long-life, thereby solve a series of defectives that cause owing to inconsistency single led in the led array.By fuzzy prediction algorithm controls technology, therefore need not know the Mathematical Modeling of controlled device or process.For uncertain system, as controlling effectively with non linear system over time.Present non-linearly as the glow current of LED and the variation between the temperature, and common constant-current circuit can't carry out detecting real-time, just drives and can't optimize, and the life-span can be affected.And after the employing fuzzy control, the electric current of wick, voltage, temperature, life-span are carried out detecting real-time, reach the optimization of driving and load, can also carry out early warning to the life-span and the fault of led chip, as long as just fault can be found at once, reach the purpose of telemanagement by computer.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. an adaptive LED driving power comprises: the input filter rectification unit (1) that links to each other with power input; The PFC unit (2) that links to each other with input filter rectification unit (1) output; The voltage transformation module (3) that links to each other with PCF unit (2) output; The output unit (4) that links to each other with voltage transformation module (3) output; The output of described output unit (4) links to each other with LED light fixture (5); It is characterized in that: also comprise DSP main control chip unit (6) and isolation drive unit (7); Described DSP main control chip unit (6) sends the PWM pulse-width signal and controls described isolation drive unit (7), controls the voltage transitions of voltage transformation module (3) then.
2. a kind of adaptive LED driving power according to claim 1 is characterized in that: the electric capacity that adopts in the described input filter rectification unit (1) is nonpolarity solid electric capacity; The electric capacity that adopts in the described output unit (4) is the macromolecular solid body capacitance.
3. a kind of adaptive LED driving power according to claim 2 is characterized in that: the transformer in the described voltage transformation module (3) is integrated transformer.
4. a kind of adaptive LED driving power according to claim 3 is characterized in that: described integrated transformer is that high-power outputting inductance and main transformer magnetic are synthetic; The employing multi-layer PCB board is a winding; Embed FERRITE CORE in the copper strips, copper strips is divided into two sections, respectively as the primary outlet bag and the high-power outputting inductance line bag of integrated transformer.
5. a kind of adaptive LED driving power according to claim 4 is characterized in that: the chip model that described DSP main control chip unit (6) adopts is 56F8323.
6. a kind of adaptive LED driving power according to claim 5 is characterized in that: described input filter rectification unit (1) provides working power for DSP main control chip unit (6); The self feeding that described voltage transformation module (3) produces through accessory power supply unit (13) for DSP main control chip unit (6) provide work required keep power supply.
7. a kind of adaptive LED driving power according to claim 6 is characterized in that: also comprise current feedback unit (8); Described output unit (4) feeds back to DSP main control chip unit (6) by current feedback unit (8) with the current signal of circuit.
8. a kind of adaptive LED driving power according to claim 7 is characterized in that: also comprise temperature detecting unit (9) and voltage-current characteristic detecting unit (10); Described temperature detecting unit (9) comprises the temperature-detecting device on the fin that is arranged on LED light fixture (5), and this temperature-detecting device feeds back to DSP main control chip unit (6) with the temperature data that detects; Described voltage-current characteristic detecting unit (10) feeds back to DSP main control chip unit (6) with the voltage-current characteristic data of detected LED light fixture (5).
9. a kind of adaptive LED driving power according to claim 8 is characterized in that: also comprise driven in synchronism unit (11); Described DSP main control chip unit (6) sends the PWM pulse-width signal and controls described driven in synchronism unit (11), controls output unit (4) then.
10. a kind of adaptive LED driving power according to claim 9 is characterized in that: also comprise and the two-way PC communication interface unit (12) that is connected in DSP main control chip unit (6), be used for the adaptive LED driving power is carried out remote monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202174861U CN201750591U (en) | 2010-06-07 | 2010-06-07 | Self-adaptive light emitting diode (LED) drive power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202174861U CN201750591U (en) | 2010-06-07 | 2010-06-07 | Self-adaptive light emitting diode (LED) drive power supply |
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| CN201750591U true CN201750591U (en) | 2011-02-16 |
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| CN2010202174861U Expired - Fee Related CN201750591U (en) | 2010-06-07 | 2010-06-07 | Self-adaptive light emitting diode (LED) drive power supply |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271443A (en) * | 2010-06-07 | 2011-12-07 | 常州丰泰机电工程有限公司 | Self-adapting LED (light-emitting diode) driving power supply |
| CN102820003A (en) * | 2011-06-09 | 2012-12-12 | 四川柏狮光电技术有限公司 | Intelligent power supply system of high power light emitting diode (LED) display screen module |
| CN102819993A (en) * | 2011-06-09 | 2012-12-12 | 四川柏狮光电技术有限公司 | Power supply system of low power consumption light-emitting diode (LED) display module |
| CN104159373A (en) * | 2014-08-15 | 2014-11-19 | 北京博尚信科技有限公司 | LED energy-saving lamp based on adaptive variable circuit and circuit control method thereof |
| CN105898929A (en) * | 2016-05-27 | 2016-08-24 | 合肥工业大学 | Self-adaptive control device and self-adaptive control method for LED electric light source based on optimal light effect |
| CN108363312A (en) * | 2017-12-26 | 2018-08-03 | 铜陵迈维电子科技有限公司 | A kind of LED drive power controller of remote on-line monitoring |
-
2010
- 2010-06-07 CN CN2010202174861U patent/CN201750591U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271443A (en) * | 2010-06-07 | 2011-12-07 | 常州丰泰机电工程有限公司 | Self-adapting LED (light-emitting diode) driving power supply |
| CN102820003A (en) * | 2011-06-09 | 2012-12-12 | 四川柏狮光电技术有限公司 | Intelligent power supply system of high power light emitting diode (LED) display screen module |
| CN102819993A (en) * | 2011-06-09 | 2012-12-12 | 四川柏狮光电技术有限公司 | Power supply system of low power consumption light-emitting diode (LED) display module |
| CN102820003B (en) * | 2011-06-09 | 2015-06-03 | 四川柏狮光电技术有限公司 | Intelligent power supply system of high power light emitting diode (LED) display screen module |
| CN104159373A (en) * | 2014-08-15 | 2014-11-19 | 北京博尚信科技有限公司 | LED energy-saving lamp based on adaptive variable circuit and circuit control method thereof |
| CN104159373B (en) * | 2014-08-15 | 2015-09-16 | 北京博尚信科技有限公司 | Based on LED electricity-saving lamp and the circuit control method thereof of self-adapting changeable circuit |
| CN105898929A (en) * | 2016-05-27 | 2016-08-24 | 合肥工业大学 | Self-adaptive control device and self-adaptive control method for LED electric light source based on optimal light effect |
| CN108363312A (en) * | 2017-12-26 | 2018-08-03 | 铜陵迈维电子科技有限公司 | A kind of LED drive power controller of remote on-line monitoring |
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