CN105282898A - LED solar simulator drive circuit control method and system - Google Patents
LED solar simulator drive circuit control method and system Download PDFInfo
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- CN105282898A CN105282898A CN201410241654.3A CN201410241654A CN105282898A CN 105282898 A CN105282898 A CN 105282898A CN 201410241654 A CN201410241654 A CN 201410241654A CN 105282898 A CN105282898 A CN 105282898A
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Abstract
The invention relates to a drive circuit control method and system of a solar simulator with high-power LED acting as light sources. Irradiation intensity of a local area can be conveniently controlled by adopting a single LED individual control method in view of the light source characteristic of LED array light sources of an LED solar simulator. Besides, a current-stabilizing driving method is adopted in LED driving in combination of the electrical characteristic of inconsistency of turn-on voltage between LED so that inconsistency of turn-on voltage can be overcome, and the stable and consistent light output effect of the LED can be achieved. A current-stabilizing drive circuit comprises an AC-DC switching power supply, an LM317 three-terminal voltage-stabilizing tube, a precision adjustable resistor and a heat radiator. The method is simple in circuit design, low in production cost and great in current stabilization effect.
Description
Technical field
The present invention relates to LED solar simulator light source drived control method and a kind of LED drive circuit.
Background technology
In lighting technical field, because LED has the clear superiorities such as luminous efficiency is high, energy-conservation, the life-span is long, be widely used on various illuminations, in recent years, utilize great power LED to make solar simulator to become a reality, but solar simulator has very high requirement to irradiation evenness and radiation stability, domestic not yet have personnel to carry out deep research to this, at the light source utilizing LED as simulator, its drive method, also someone designs drive pattern.The existing stabilized current power supply in market is subject to the restriction of simulator high request and cannot directly uses.
Therefore, how removing the light source of control simulation device, realize irradiation evenness and the radiation stability of LED solar simulator high request, is the most crucial part of LED solar simulator.
Summary of the invention
Main purpose of the present invention is to provide a kind of driving method of LED solar simulator and the high stabilized current driving circuit of a kind of stability, is intended to the irradiation evenness and the radiation stability that realize LED solar simulator high request.
The present invention proposes a kind of LED solar simulator light source driving method: adopt LED mono-control model, namely a stabilized current power supply controls a LEDs.The mode one_to_one corresponding of flow straightener antenna array control LED light source array is utilized to realize the Current Control of all light sources of LED solar simulator.
The flow straightener that the present invention adopts comprises AC-DC Switching Power Supply, LM317 three-terminal voltage-stabilizing pipe, accurate adjustable resistance and radiator.Magnitude of voltage required in circuit is obtained by AC-DC Switching Power Supply, switched power output connects LM317 voltage input end, an accurate adjustable resistance in parallel between LM317 voltage-regulation end and voltage output end, be connected in circuit finally by voltage output end, by adjusting accurate adjustable resistance, reach the driving current value of demand.In addition for ensureing that LM317 is operated in suitable temperature, adding radiator at LM317 and ensureing heat radiation.The circuit design of the design is simple, and control effects is good, and steady flow result is good.
Accompanying drawing explanation
Fig. 1 is LED solar simulator array of source drive circuit schematic diagram.
Fig. 2 is the operation principle thing intention of single current stabilization circuit.
Embodiment
LED solar simulator control method realizes: design one side (or two-sided) LED aluminum base plate, realize single LEDs control circuit, line design does not have Uniform provisions, can realize single LEDs and control.In LED solar simulator controls, according to the light situation of LED solar simulator on effective irradiation face, the LED drive current value (by adjusting the resistance of accurate adjustable resistance) of suitable adjustment corresponding region, cuts down or strengthens the light intensity value in this region, realize the Uniform Irradiation on irradiation face.LED controls meticulousr, more accurate for the uniformity adjustment on irradiation face.
The realization of LED drive circuit.The LED stabilized current driving circuit that the design realizes comprises AC-DC Switching Power Supply, LM317 three-terminal voltage-stabilizing pipe, accurate adjustable resistance and radiator.Magnitude of voltage required in circuit is obtained by AC-DC Switching Power Supply, switched power output connects LM317 voltage input end, an accurate adjustable resistance in parallel between LM317 voltage-regulation end and voltage output end, be connected in circuit finally by voltage output end, by adjusting accurate adjustable resistance, reach the driving current value of demand.Between the voltage-regulation end of LM317 and voltage output end exist a reference voltage 1.25V, in drive circuit electric current be defined as I=1.25V/R, R is the accurate adjustable resistance be connected in parallel between voltage-regulation end and voltage output end.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, the methods such as every the present invention of utilization or structure realize LED solar simulator control circui, all in the protection range of this patent.
Claims (4)
1.LED solar simulator drive circuit control method and system, is characterized in that: LED solar simulator light source adopts LED array light source structure, and the driving of light source adopts every LEDs to adopt the method controlled separately, drives and adopts current stabilization to drive.
2. drive circuit comprises AC-DC Switching Power Supply, LM317 three-terminal voltage-stabilizing pipe, accurate adjustable resistance and radiator.
3. according to claim 1, LED solar simulator light source adopts the control method of single control model, and the method for any few number LED co-controlling is all within protection range.
4. LED drive circuit according to claim 1, is characterized in that, stabilized current power supply comprises AC-DC Switching Power Supply, LM317 three-terminal voltage-stabilizing pipe, accurate adjustable resistance and radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241654.3A CN105282898A (en) | 2014-06-03 | 2014-06-03 | LED solar simulator drive circuit control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241654.3A CN105282898A (en) | 2014-06-03 | 2014-06-03 | LED solar simulator drive circuit control method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105282898A true CN105282898A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410241654.3A Pending CN105282898A (en) | 2014-06-03 | 2014-06-03 | LED solar simulator drive circuit control method and system |
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| Country | Link |
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| CN (1) | CN105282898A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916803A (en) * | 2018-08-15 | 2018-11-30 | 华域视觉科技(上海)有限公司 | A kind of headlamp mould group and automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290340A (en) * | 2008-04-29 | 2008-10-22 | 李果华 | LED solar simulator |
| CN201180948Y (en) * | 2008-04-07 | 2009-01-14 | 王会军 | Energy-saving lamp |
| CN202649261U (en) * | 2012-04-13 | 2013-01-02 | 彩虹集团公司 | Reliability testing circuit |
| CN202791553U (en) * | 2012-10-10 | 2013-03-13 | 浙江农林大学 | Red, blue, far-red and ultraviolet integrated high-power LED (Light Emitting Diode) light supplement lamp |
| CN103531065A (en) * | 2013-10-24 | 2014-01-22 | 浙江农林大学 | Colorimetric light source device based on tricolor LED |
-
2014
- 2014-06-03 CN CN201410241654.3A patent/CN105282898A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201180948Y (en) * | 2008-04-07 | 2009-01-14 | 王会军 | Energy-saving lamp |
| CN101290340A (en) * | 2008-04-29 | 2008-10-22 | 李果华 | LED solar simulator |
| CN202649261U (en) * | 2012-04-13 | 2013-01-02 | 彩虹集团公司 | Reliability testing circuit |
| CN202791553U (en) * | 2012-10-10 | 2013-03-13 | 浙江农林大学 | Red, blue, far-red and ultraviolet integrated high-power LED (Light Emitting Diode) light supplement lamp |
| CN103531065A (en) * | 2013-10-24 | 2014-01-22 | 浙江农林大学 | Colorimetric light source device based on tricolor LED |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916803A (en) * | 2018-08-15 | 2018-11-30 | 华域视觉科技(上海)有限公司 | A kind of headlamp mould group and automobile |
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Application publication date: 20160127 |
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| WD01 | Invention patent application deemed withdrawn after publication |