CN105682288A - LED lighting system capable of automatically adjusting brightness - Google Patents
LED lighting system capable of automatically adjusting brightness Download PDFInfo
- Publication number
- CN105682288A CN105682288A CN201610072599.9A CN201610072599A CN105682288A CN 105682288 A CN105682288 A CN 105682288A CN 201610072599 A CN201610072599 A CN 201610072599A CN 105682288 A CN105682288 A CN 105682288A
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- brightness
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- temperature
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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]
- H05B45/40—Details of LED load circuits
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Abstract
The invention discloses an LED lighting system capable of automatically adjusting the brightness. The LED lighting system comprises a constant-voltage source, a constant-current source, an LED light source, an ambient light brightness detection unit and an ambient light brightness signal conversion unit, wherein the constant-voltage source, the constant-current source and the LED light source are sequentially connected with one another; the ambient light brightness detection unit is used for detecting the external ambient light brightness and converting the external ambient light brightness into an ambient light brightness sampling signal for outputting; the ambient light brightness signal conversion unit is used for receiving the ambient light brightness sampling signal, converting the ambient light brightness sampling signal into a brightness adjusting signal and transmitting the brightness adjusting signal to the constant-current source; and the constant-current source is used for receiving the brightness adjusting signal to adjust the brightness of the LED light source. Through arrangement of the ambient light brightness detection unit for detecting the external ambient light brightness and converting the external ambient light brightness into the ambient light brightness sampling signal and the ambient light brightness signal conversion unit for receiving the ambient light brightness sampling signal, converting the ambient light brightness sampling signal into the brightness adjusting signal and transmitting the brightness adjusting signal to the constant-current source to adjust the brightness of the LED light source, automatic brightness adjustment of the LED lighting system is achieved; resources are saved; and use is convenient.
Description
Technical field
The present invention relates to lighting technical field, it is more particularly related to the LED illumination System of a kind of automatic brightness adjustment.
Background technology
LED has energy-conservation and life-span length characteristic, is increasingly widely used in the activities such as life, industrial and agricultural production, for instance the LED street lamp etc. in the conventional LED desk lamp in bedroom or study, road traffic system.
Having the LED illumination System of LED in use, ambient light difference is bigger, it may be possible to the illumination at night, it is also possible to dusk light starts the floor light died down. Conventional LED illumination System, LED brightness is comparatively fixing, uses when illumination at night or light die down floor light, and LED brightness will not be different along with the difference of ambient light. The bright dark degree of LED illumination System is fixed identical, uses in different lighting environments, causes the waste of resource or brightness of illumination undesirable and injure vision.
Summary of the invention
For the weak point existed in above-mentioned technology, the present invention provides the LED illumination System of a kind of automatic brightness adjustment, by being provided with detection environmental light brightness and being converted into the environmental light brightness detection unit of environmental light brightness sampled signal and receive described environmental light brightness sampled signal and convert brightness to and regulate signal be delivered to constant-current source to regulate the environmental light brightness signal conversion unit of LED light source brightness, realize the automatic brightness adjustment of LED illumination System, economize on resources, easy to use.
In order to realize these purposes according to the present invention and further advantage, the present invention is achieved through the following technical solutions:
The LED illumination System of the automatic brightness adjustment of the present invention, it includes the constant pressure source, constant-current source and the LED light source that are sequentially connected with, and the alternating voltage of input is converted to direct voltage output to described constant-current source by described constant pressure source, it is characterised in that also include:
Environmental light brightness detection unit, it detects extraneous environmental light brightness and is converted into the output of environmental light brightness sampled signal;
Environmental light brightness signal conversion unit, it receives described environmental light brightness sampled signal and converts brightness adjustment signal to and be delivered to described constant-current source; Constant-current source receives described brightness and regulates the brightness of LED light source described in Signal Regulation.
Preferably, the first switch being turned on and off described environmental light brightness signal conversion unit is also included.
Preferably, described environmental light brightness detection unit includes the photoconductive resistance of detection external environment brightness.
Preferably, the communication mode between described environmental light brightness detection unit and described environmental light brightness signal conversion unit is wired or wireless.
Preferably, also include: temperature detecting unit and temperature signal converting unit;
Wherein, described constant-current source includes the first constant-current source and the second constant-current source; Described LED light source includes the LED cold light source being connected with described first constant-current source and the LED warm light source being connected with described second constant-current source;
Temperature that the detection of described temperature detecting unit is extraneous is also converted into temperature collection signal and flows to described temperature signal converting unit, and described temperature signal converting unit receives described temperature collection signal and converts temperature to and regulate signal; Described temperature is regulated signal and is delivered to described first constant-current source and described second constant-current source respectively by described temperature signal converting unit.
Preferably, the second switch being turned on and off described temperature signal converting unit is also included.
Preferably, described temperature signal converting unit output temperature regulates the pattern of signal is PWM.
Preferably, described temperature detecting unit is provided with the accurate thermoelectricity occasionally critesistor of detection ambient temperature.
Preferably, the communication mode between described temperature detecting unit and described temperature signal converting unit is wired or wireless.
The present invention at least includes following beneficial effect:
1) LED illumination System provided by the invention, by being provided with detection environmental light brightness and being converted into the environmental light brightness detection unit of environmental light brightness sampled signal and receive environmental light brightness sampled signal and convert brightness to and regulate signal be delivered to constant-current source to regulate the environmental light brightness signal conversion unit of LED light source brightness, realize the automatic brightness adjustment of LED illumination System, economize on resources, easy to use;
2) LED illumination System includes being turned on and off the first switch of environmental light brightness signal conversion unit, by being turned on and off the first switch of environmental light brightness signal conversion unit, it is possible to whether adopting the LED illumination System of automatic brightness adjustment to select;
3) environmental light brightness detection unit includes the photoconductive resistance of detection external environment brightness, and environmental light brightness is converted to the environmental light brightness sampled signal output of the signal of telecommunication by photoconductive resistance by optical signal, and highly sensitive, cost is low, easy-to-use;
4) communication mode between environmental light brightness detection unit and environmental light brightness signal conversion unit is wired or wireless. Wired or wireless communication mode, detecting the communication between unit and environmental light brightness signal conversion unit for environmental light brightness provides communication pattern the most widely to select;
5) LED illumination System also includes temperature detecting unit and temperature signal converting unit, and constant-current source includes the first constant-current source and the second constant-current source; LED light source includes the LED cold light source being connected with the first constant-current source and the LED warm light source being connected with the second constant-current source; Temperature that temperature detecting unit detection is extraneous is also converted into temperature collection signal and flows to temperature signal converting unit, and temperature signal converting unit receives temperature collection signal and converts temperature to and regulate signal and be delivered to the first constant-current source to regulate LED cold light source and to be delivered to the second constant-current source to regulate LED warm light source;
6) whether LED illumination System includes the second switch that is turned on and off temperature signal converting unit, by being turned on and off environmental light brightness signal conversion unit second switch, it is possible to adopting the LED illumination System of temperature automatic adjustment to select;
7) temperature signal converting unit output temperature regulates the pattern of signal is PWM, and PWM mode output temperature regulates signal, and control is simple, flexible, dynamic response is good;
8) temperature detecting unit is provided with the accurate thermoelectricity occasionally critesistor of detection ambient temperature, and accurate thermoelectricity occasionally critesistor is highly sensitive to variation of ambient temperature, and good stability, overload capacity are strong, and volume is little, easy-to-use;
9) communication mode between temperature detecting unit and temperature signal converting unit is wired or wireless. Wired or wireless communication mode, provides communication pattern the most widely to select for the communication between temperature detecting unit and temperature signal converting unit.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part is also by by being understood by those skilled in the art the research of the present invention and practice.
Accompanying drawing explanation
Fig. 1 is the structural representation of the LED illumination System of automatic brightness adjustment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, to make those skilled in the art can implement according to this with reference to description word.
Should be appreciated that used herein such as " have ", " comprising " and " including " term is not precluded from existence or the interpolation of other elements one or more or its combination.
The present invention provides the LED illumination System of a kind of automatic brightness adjustment, it includes the constant pressure source 10, constant-current source 20 and the LED light source 30 that are sequentially connected with, constant pressure source 10 converts the alternating voltage of input to direct voltage output to constant-current source 20, provides input energy for constant-current source 20. The LED illumination System of automatic brightness adjustment also includes environmental light brightness detection unit 40 and environmental light brightness signal conversion unit 50, and environmental light brightness detection unit 40 detects the environmental light brightness in the external world and is converted into the output of environmental light brightness sampled signal; Environmental light brightness signal conversion unit 50 receives environmental light brightness sampled signal and converts brightness adjustment signal to and be delivered to constant-current source 20; Constant-current source 20 receives brightness and regulates the brightness of Signal Regulation LED light source 30.
In embodiment of the present invention, by being provided with detection environmental light brightness and being converted into the environmental light brightness detection unit 40 of environmental light brightness sampled signal and receive environmental light brightness sampled signal and convert brightness to and regulate signal and be delivered to constant-current source 20 to regulate the environmental light brightness signal conversion unit 50 of LED light source 30 brightness, realize the automatic brightness adjustment of LED illumination System, economize on resources, easy to use.
In above-mentioned embodiment, constant pressure source 10 adopts the constant pressure source of High Power Factor, and the constant pressure source of High Power Factor is when in input ac voltage gamut, output loading is not less than 30%, and its PF value is not less than 0.9, thus the loss of voltage reduced in electric power system, reduce the electric energy loss of system.
As another embodiment of the invention, also include the first switch being turned on and off environmental light brightness signal conversion unit 50. By being turned on and off the first switch of environmental light brightness signal conversion unit 50, it is possible to whether adopting the LED illumination System of automatic brightness adjustment to select. Highly preferred embodiment, the first switch is installed in environmental light brightness signal conversion unit 50, it is simple to quickly response is turned on and off the action of environmental light brightness signal conversion unit 50.
As another embodiment of the invention, environmental light brightness detection unit 40 includes the photoconductive resistance of detection external environment brightness. Environmental light brightness is converted to the environmental light brightness sampled signal output of the signal of telecommunication by photoconductive resistance by optical signal, and highly sensitive, cost is low, easy-to-use.
As another embodiment of the invention, the communication mode between environmental light brightness detection unit 40 and environmental light brightness signal conversion unit 50 is wired or wireless. Wired or wireless communication mode, detecting the communication between unit 40 and environmental light brightness signal conversion unit 50 for environmental light brightness provides communication pattern the most widely to select. As the preferred embodiment of the present invention, the communication mode between environmental light brightness detection unit 40 and environmental light brightness signal conversion unit 50 is Wifi or mobile data communicate, and uses general, communication convenience.
As another embodiment of the invention, the LED illumination System of automatic brightness adjustment also includes: temperature detecting unit 60 and temperature signal converting unit 70; Constant-current source 20 includes the first constant-current source 21 and the second constant-current source 22; LED light source 30 includes the LED cold light source 31 being connected with the first constant-current source 21 and the LED warm light source 32 being connected with the second constant-current source 22; Temperature detecting unit 60 detects the temperature in the external world and is converted into temperature collection signal and flows to temperature signal converting unit 70, and temperature signal converting unit 70 receives temperature collection signal and converts temperature to and regulate signal; Temperature is regulated signal and is delivered to the first constant-current source 21 respectively to regulate LED cold light source 31, to be delivered to the second constant-current source 22 to regulate LED warm light source 32 by temperature signal converting unit 70.
Wherein, LED cold light source 31 is as the principal light source of LED illumination System, the luminous flux of more than 75% is provided, ensure enough illumination requirement, only in the temperature within LED cold light source 31 higher than when system set point temperature, just can by luminance reduction, to reduce the temperature of LED cold light source 31, it is ensured that LED cold light source 31 trouble free service. Time usual LED cold light source 31 internal temperature is higher than 55 degrees Celsius, starts to reduce the operating current of LED cold light source 31, time lamp interior temperature reaches 70 degree, complete switch off the operating current of LED cold light source. LED warm light source 32 is the secondary light source of LED illumination System, plays the effect regulating colour temperature; Carry out fine adjustment by exporting the output electric current of the second constant-current source 22 of current adjustment, and in the temperature range set, the colour temperature of LED illumination System is accurately regulated, has reached comfortable lighting requirement.
As another embodiment of the invention, the LED illumination System of automatic brightness adjustment also includes the second switch being turned on and off temperature signal converting unit 70. By being turned on and off the second switch of temperature signal converting unit 70, it is possible to whether adopting the LED illumination System of temperature automatic adjustment to select. Highly preferred embodiment, second switch is installed in temperature signal converting unit 70, it is simple to quickly response is turned on and off the action of temperature signal converting unit 70.
As another embodiment of the invention, it is PWM (PulseWidthModulation, pulse width modulation) that temperature signal converting unit 70 output temperature regulates the pattern of signal. PWM mode output temperature regulates signal, and control is simple, flexible, dynamic response is good.
As another embodiment of the invention, temperature detecting unit 60 is provided with the accurate thermoelectricity occasionally critesistor of detection ambient temperature.Accurate thermoelectricity occasionally critesistor is highly sensitive to variation of ambient temperature, and good stability, overload capacity are strong, and volume is little, easy-to-use.
As another embodiment of the invention, the communication mode between temperature detecting unit 60 and temperature signal converting unit 70 is wired or wireless. Wired or wireless communication mode, provides communication pattern the most widely to select for the communication between temperature detecting unit 60 and temperature signal converting unit 70. As the preferred embodiment of the present invention, the communication mode between temperature detecting unit 60 and temperature signal converting unit 70 is Wifi or mobile data communicate, and uses general, communication convenience.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed utilization. It can be applied to various applicable the field of the invention completely. Other amendment it is easily achieved for those skilled in the art. Therefore, under the general concept limited without departing substantially from claim and equivalency range, the present invention is not limited to specific details and shown here as the legend with description.
Claims (9)
1. a LED illumination System for automatic brightness adjustment, it includes the constant pressure source, constant-current source and the LED light source that are sequentially connected with, and the alternating voltage of input is converted to direct voltage output to described constant-current source by described constant pressure source, it is characterised in that also include:
Environmental light brightness detection unit, it detects extraneous environmental light brightness and is converted into the output of environmental light brightness sampled signal;
Environmental light brightness signal conversion unit, it receives described environmental light brightness sampled signal and converts brightness adjustment signal to and be delivered to described constant-current source; Constant-current source receives described brightness and regulates the brightness of LED light source described in Signal Regulation.
2. the LED illumination System of automatic brightness adjustment as claimed in claim 1, it is characterised in that also include the first switch being turned on and off described environmental light brightness signal conversion unit.
3. the LED illumination System of automatic brightness adjustment as claimed in claim 1, it is characterised in that described environmental light brightness detection unit includes the photoconductive resistance of detection external environment brightness.
4. the LED illumination System of automatic brightness adjustment as claimed in claim 1, it is characterised in that the communication mode between described environmental light brightness detection unit and described environmental light brightness signal conversion unit is wired or wireless.
5. the LED illumination System of automatic brightness adjustment as claimed in claim 1, it is characterised in that also include: temperature detecting unit and temperature signal converting unit;
Wherein, described constant-current source includes the first constant-current source and the second constant-current source; Described LED light source includes the LED cold light source being connected with described first constant-current source and the LED warm light source being connected with described second constant-current source;
Temperature that the detection of described temperature detecting unit is extraneous is also converted into temperature collection signal and flows to described temperature signal converting unit, and described temperature signal converting unit receives described temperature collection signal and converts temperature to and regulate signal; Described temperature is regulated signal and is delivered to described first constant-current source and described second constant-current source respectively by described temperature signal converting unit.
6. the LED illumination System of automatic brightness adjustment as claimed in claim 5, it is characterised in that also include the second switch being turned on and off described temperature signal converting unit.
7. the LED illumination System of the automatic brightness adjustment as described in claim 5 or 6, it is characterised in that it is PWM that described temperature signal converting unit output temperature regulates the pattern of signal.
8. the LED illumination System of the automatic brightness adjustment as described in claim 5 or 6, it is characterised in that described temperature detecting unit is provided with the accurate thermoelectricity occasionally critesistor of detection ambient temperature.
9. the LED illumination System of the automatic brightness adjustment as described in claim 5 or 6, it is characterised in that the communication mode between described temperature detecting unit and described temperature signal converting unit is wired or wireless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072599.9A CN105682288A (en) | 2016-02-02 | 2016-02-02 | LED lighting system capable of automatically adjusting brightness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072599.9A CN105682288A (en) | 2016-02-02 | 2016-02-02 | LED lighting system capable of automatically adjusting brightness |
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| CN105682288A true CN105682288A (en) | 2016-06-15 |
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| CN201610072599.9A Pending CN105682288A (en) | 2016-02-02 | 2016-02-02 | LED lighting system capable of automatically adjusting brightness |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211501A (en) * | 2016-06-27 | 2016-12-07 | 北京小米移动软件有限公司 | Light adjusting method and device |
| CN106385479A (en) * | 2016-10-26 | 2017-02-08 | 上海传英信息技术有限公司 | Method and device for automatically adjusting brightness of button lamp |
| CN114025448A (en) * | 2021-12-02 | 2022-02-08 | 深圳市源立信照明科技有限公司 | Flat lamp circuit and control method thereof |
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| CN103327699A (en) * | 2013-07-05 | 2013-09-25 | 中国计量学院 | Multi-parameter linkage-control-based intelligent LED (Light Emitting Diode) lamp for plant growth |
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Patent Citations (5)
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| CN102014560A (en) * | 2010-11-24 | 2011-04-13 | 四川省桑瑞光辉标识***股份有限公司 | Adaptive light emitting diode (LED) illumination device and control method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211501A (en) * | 2016-06-27 | 2016-12-07 | 北京小米移动软件有限公司 | Light adjusting method and device |
| CN106385479A (en) * | 2016-10-26 | 2017-02-08 | 上海传英信息技术有限公司 | Method and device for automatically adjusting brightness of button lamp |
| CN114025448A (en) * | 2021-12-02 | 2022-02-08 | 深圳市源立信照明科技有限公司 | Flat lamp circuit and control method thereof |
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Application publication date: 20160615 |