CN111615244A - Intelligent dimming type LED driving power supply - Google Patents
Intelligent dimming type LED driving power supply Download PDFInfo
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- CN111615244A CN111615244A CN202010468082.8A CN202010468082A CN111615244A CN 111615244 A CN111615244 A CN 111615244A CN 202010468082 A CN202010468082 A CN 202010468082A CN 111615244 A CN111615244 A CN 111615244A
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- 230000008569 process Effects 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 2
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- 230000004075 alteration Effects 0.000 description 1
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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
- H05B45/34—Voltage stabilisation; Maintaining constant voltage
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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]
- H05B45/10—Controlling the intensity of the light
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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]
- H05B45/20—Controlling the colour of the light
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an intelligent dimming LED driving power supply which comprises a motherboard circuit and an embedded system circuit, wherein the motherboard circuit comprises a pin header 2, a rectifier BD1, a transformer T1, a constant voltage driving chip IC1, a pin header 3, a driving controller IC2 and a pin header 1, the embedded system circuit comprises a main control chip U1, a photoelectric coupler U3 and a chip U2, and the input end of the rectifier BD1 is connected with the input end of the pin header 2. This intelligence light modulation type LED drive power supply has following advantage: firstly, the color temperature in the dimming process is constant, and the change of the color cannot be caused; secondly, a nonlinear curve light modulation suitable for human eye characteristics is provided by a single chip microcomputer embedded system according to human eye characteristics, and natural transition is achieved; and thirdly, linear optocouplers are used for isolation, so that the load of a control signal of each power supply is reduced to 5 milliamperes, and one-to-many centralized control and safety isolation are realized.
Description
Technical Field
The invention relates to the technical field of LED driving power supplies, in particular to an intelligent dimming type LED driving power supply.
Background
In the prior art, a Direct Current (DC) 0-10V voltage is used as a control signal of an LED driving power supply, and the output current is linearly regulated in proportion according to the control voltage of 0-10, so that the following defects can occur due to the technical limitation: 1, the dimming process can cause a severe color temperature shift, and the transition from dark to bright can be perceived by the human eye as "yellow" to "white". 2, the brightness change of the light of human eyes is a nonlinear characteristic, so that a linearly changed current is not suitable for the actual feeling of human eyes, and the comfort level is greatly reduced. 3, because the load current is relatively large, the prior art is difficult to realize that one controller can control a plurality of power supplies in a centralized way.
Based on the defects, the intelligent dimming type LED driving power supply is provided.
Disclosure of Invention
The invention aims to provide an intelligent dimming type LED driving power supply, which has constant color temperature in the dimming process, does not cause color change, can provide nonlinear curve dimming suitable for human eye characteristics, is in natural transition, realizes one-to-many centralized control and safety isolation, and solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an intelligent dimming LED driving power supply comprises a motherboard circuit and an embedded system circuit, wherein the motherboard circuit comprises a pin header TER2, a rectifier BD1, a transformer T1, a constant voltage driver IC1, a pin header TER3, a driving controller IC2 and a pin header TER1, the embedded system circuit comprises a main control chip U1, a photoelectric coupler U3 and a chip U2, the input end of the rectifier BD1 is connected with the input end of the pin header 2, the output end of the rectifier BD1 is connected with the input end of the transformer T1, the No. 2 terminal of the transformer T1 is connected to the input end of the constant voltage driver IC1, and the output end of the constant voltage driver IC1 is connected to the No. 4 terminal of the transformer T1; the input end of the pin header 3 is connected to the output end of the pin header 2, the output end of the pin header 3 is connected to the input end of a driving controller IC2, the input end of the driving controller IC2 is connected to the output end of a transformer T1, and the output end of a driving controller IC2 is connected to the input end of the pin header 1; the output end of the pin header 1 is connected to the power input end of the main control chip U1, the output end of the main control chip U1 is connected to the input end of the photoelectric coupler U3 and the input end of the chip U2, and the output end of the photoelectric coupler U3 and the output end of the chip U2 are connected to the input end of the pin header 4.
Preferably, the rectifier BD1 is model MB 10S.
Preferably, the constant voltage driver IC1 is of the type MP 24894.
Preferably, the drive controller is of the type MP 24894.
Preferably, the model of the main control chip U1 is STM8S103 XPXX.
Preferably, the model number of the photocoupler U3 is 817A.
Preferably, the model of the chip U2 is 78L05SOT 89.
Compared with the prior art, the invention has the following beneficial effects:
this intelligence light modulation type LED drive power supply has following advantage: firstly, the color temperature in the dimming process is constant, and the change of the color cannot be caused; secondly, a nonlinear curve dimming suitable for human eye characteristics can be provided according to the human eye characteristics, and natural transition is achieved; and thirdly, linear optocouplers are used for isolation, so that the load of a control signal of each power supply is reduced to 5 milliamperes, and one-to-many centralized control and safety isolation are realized.
Drawings
FIG. 1 is a schematic diagram of a motherboard circuit of the present invention;
FIG. 2 is a circuit diagram of an embedded system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an intelligent dimming LED driving power supply includes a motherboard circuit and an embedded system circuit, the motherboard circuit includes a pin header 2, a rectifier BD1, a transformer T1, a constant voltage driver IC1, a pin header 3, a driving controller IC2, and a pin header 1, the model of the rectifier BD1 is MB10S, the model of the constant voltage driver IC1 is MP24894, the model of the drive controller is MP24894, the embedded system circuit comprises a main control chip U1, a photoelectric coupler U3 and a chip U2, the model of the main control chip U1 is STM8S103XPXX, the model of the photoelectric coupler U3 is 817A, the model of the chip U2 is 78L05SOT89, the input end of the photoelectric coupler U3 rectifier BD1 is connected with the input end of the pin header 2, the output end of the rectifier BD1 is connected with the input end of the transformer T1, the No. 2 terminal of the transformer T1 is connected to the input end of the constant voltage driver IC1, and the output end of the constant voltage driver IC1 is connected to the No. 4 terminal of the transformer T1; the input end of a photoelectric coupler U3 pin header 3 is connected to the output end of a pin header TER2, the output end of the pin header TER3 is connected to the input end of a driving controller IC2, the input end of the driving controller IC2 is connected to the output end of a transformer T1, and the output end of the driving controller IC2 is connected to the input end of the pin header 1; the output end of a photoelectric coupler U3 pin header 1 is connected to the power input end of a main control chip U1, the output end of the main control chip U1 is connected to the input end of the photoelectric coupler U3 and the input end of a chip U2, and the output end of the photoelectric coupler U3 and the output end of the chip U2 are connected to the input end of the pin header 4.
The intelligent dimming LED driving power supply adopts a two-stage power supply structure, namely a first-stage power supply formed by connecting a pin arrangement TER2, a rectifier BD1, a transformer T1 and a constant voltage driver IC1, a second-stage power supply formed by connecting a pin arrangement TER3, a driving controller IC2 and a pin arrangement TER1, wherein the first-stage power supply provides a constant voltage power supply with PFC (power factor correction), the first-stage power supply supplies power for a main control chip U1 of an embedded system circuit and supplies power for the second-stage power supply, and the second-stage power supply precisely controls the output average current according to a control signal provided by the main control chip U1; the main control chip U1 is a 0-10V control circuit board, and carries out photoelectric isolation on 0-10V control signals through a photoelectric coupler U3, the main control chip U1 carries out quantitative sampling on the control signals, and carries out operation on the control signals to obtain the percentage of nonlinear dimming, outputs 10-bit pulse width modulation signals to a secondary power supply chip, isolates and digitalizes the 0-10V control signals, and uses an embedded system circuit to provide a set of nonlinear control signals suitable for human eyes.
To sum up, this intelligence light modulation type LED drive power supply has following advantage: firstly, the color temperature in the dimming process is constant, and the change of the color cannot be caused; secondly, a nonlinear curve dimming suitable for human eye characteristics can be provided according to the human eye characteristics, and natural transition is achieved; and thirdly, linear optocouplers are used for isolation, so that the load of a control signal of each power supply is reduced to 5 milliamperes, and one-to-many centralized control and safety isolation are realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an intelligence light modulation type LED drive power supply, includes motherboard circuit and embedded system circuit, its characterized in that: the motherboard circuit comprises a pin header TER2, a rectifier BD1, a transformer T1, a constant voltage driver IC1, a pin header TER3, a drive controller IC2 and a pin header TER1, the embedded system circuit comprises a main control chip U1, a photoelectric coupler U3 and a chip U2, the input end of the rectifier BD1 is connected with the input end of the pin header 2, the output end of the rectifier BD1 is connected with the input end of the transformer T1, a No. 2 terminal of the transformer T1 is connected to the input end of the constant voltage driver IC1, and the output end of the constant voltage driver IC1 is connected to a No. 4 terminal of the transformer T1; the input end of the pin header 3 is connected to the output end of the pin header 2, the output end of the pin header 3 is connected to the input end of a driving controller IC2, the input end of the driving controller IC2 is connected to the output end of a transformer T1, and the output end of a driving controller IC2 is connected to the input end of the pin header 1; the output end of the pin header 1 is connected to the power input end of the main control chip U1, the output end of the main control chip U1 is connected to the input end of the photoelectric coupler U3 and the input end of the chip U2, and the output end of the photoelectric coupler U3 and the output end of the chip U2 are connected to the input end of the pin header 4.
2. The intelligent dimming LED driving power supply according to claim 1, characterized in that: the rectifier BD1 is model MB 10S.
3. The intelligent dimming LED driving power supply according to claim 1, characterized in that: the constant voltage driver IC1 is model MP 24894.
4. The intelligent dimming LED driving power supply according to claim 1, characterized in that: the model number of the driving controller is MP 24894.
5. The intelligent dimming LED driving power supply according to claim 1, characterized in that: the model of the main control chip U1 is STM8S103 XPXX.
6. The intelligent dimming LED driving power supply according to claim 1, characterized in that: the model number of the photoelectric coupler U3 is 817A.
7. The intelligent dimming LED driving power supply according to claim 1, characterized in that: the model number of the chip U2 is 78L05SOT 89.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468082.8A CN111615244A (en) | 2020-05-28 | 2020-05-28 | Intelligent dimming type LED driving power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468082.8A CN111615244A (en) | 2020-05-28 | 2020-05-28 | Intelligent dimming type LED driving power supply |
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| CN111615244A true CN111615244A (en) | 2020-09-01 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202454137U (en) * | 2012-01-19 | 2012-09-26 | 西北工业大学 | Electrician technique and electronic technique comprehensive experiment box |
| CN102821522A (en) * | 2012-08-16 | 2012-12-12 | 电子科技大学 | LLC (Logical Link Control) resonant constant-current driving power supply for LED (Light-Emitting Diode) street lamp |
| CN104582189A (en) * | 2015-01-15 | 2015-04-29 | 魏泽科 | Intelligent light dimming and color adjusting LED isolation drive circuit |
| KR20160029344A (en) * | 2014-09-05 | 2016-03-15 | 서울반도체 주식회사 | Led lighting device |
| CN105828485A (en) * | 2016-05-25 | 2016-08-03 | 成都白描网络科技有限公司 | Overheating protection type constant-voltage driving power supply for white-light LEDs |
| CN211959627U (en) * | 2020-05-28 | 2020-11-17 | 浙江正普电力设备有限公司 | Intelligent dimming type LED driving power supply |
-
2020
- 2020-05-28 CN CN202010468082.8A patent/CN111615244A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202454137U (en) * | 2012-01-19 | 2012-09-26 | 西北工业大学 | Electrician technique and electronic technique comprehensive experiment box |
| CN102821522A (en) * | 2012-08-16 | 2012-12-12 | 电子科技大学 | LLC (Logical Link Control) resonant constant-current driving power supply for LED (Light-Emitting Diode) street lamp |
| KR20160029344A (en) * | 2014-09-05 | 2016-03-15 | 서울반도체 주식회사 | Led lighting device |
| CN104582189A (en) * | 2015-01-15 | 2015-04-29 | 魏泽科 | Intelligent light dimming and color adjusting LED isolation drive circuit |
| CN105828485A (en) * | 2016-05-25 | 2016-08-03 | 成都白描网络科技有限公司 | Overheating protection type constant-voltage driving power supply for white-light LEDs |
| CN211959627U (en) * | 2020-05-28 | 2020-11-17 | 浙江正普电力设备有限公司 | Intelligent dimming type LED driving power supply |
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