CN103228083B - A kind of intelligent dimming LED drive power - Google Patents
A kind of intelligent dimming LED drive power Download PDFInfo
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- CN103228083B CN103228083B CN201310147702.8A CN201310147702A CN103228083B CN 103228083 B CN103228083 B CN 103228083B CN 201310147702 A CN201310147702 A CN 201310147702A CN 103228083 B CN103228083 B CN 103228083B
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- 238000005286 illumination Methods 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The present invention relates to a kind of intelligent dimming LED drive power, comprise pre-process circuit, rear class DC/DC constant-current drive circuit, Single-chip Controlling center, light sensor, infrared sensor and LED illumination source, the input of described pre-process circuit is connected with external power supply, the output of described pre-process circuit is connected with the input of described rear class DC/DC constant-current drive circuit, the output of described rear class DC/DC constant-current drive circuit is connected with the power interface of described LED illumination source, the output of described light sensor and infrared sensor is connected with the input at described Single-chip Controlling center, the output at described Single-chip Controlling center is connected with the power end of AC/DC conversion circuit in the PWM control pin of DC/DC constant current chip in described rear class DC/DC constant-current drive circuit and described pre-process circuit respectively.Adopt the present invention can the intensity of illumination of adjustment LED illumination source, simultaneously can intelligence closedown or open described LED illumination source.
Description
Technical field
The invention belongs to lighting technical field, relate to a kind of LED drive power, be specifically related to a kind of intelligent dimming LED drive power.
Background technology
Along with the development of society, the requirement of people to lighting of home is more and more stricter, indoor LED intelligent illumination system is a kind of development trend, existing LED dimming mode has Direct Plug-In light modulation and infrared light modulation, certain lead-in wire is had between Direct Plug-In dimmer and LED illumination fluorescent tube, not only cabling is complicated, and cost is high and have certain energy loss.Although infrared light modulation avoids routing problem, its light modulation is apart from limited and need external control board manually to send dim signal, and light modulation precision is not high.Artificial adjustment light intensity does not generally reach optimal illumination state, so existing dimming mode is both not convenient, not environmentally intelligent again.
Summary of the invention
The object of the present invention is to provide a kind of intelligent dimming LED drive power that can overcome traditional LED intelligent illumination system cabling complexity, high in cost of production defect.
For achieving the above object, intelligent dimming LED drive power of the present invention, comprises pre-process circuit, rear class DC/DC constant-current drive circuit, Single-chip Controlling center, light sensor, infrared sensor and LED illumination source, the input of described pre-process circuit is connected with external power supply, the output of described pre-process circuit is connected with the input of described rear class DC/DC constant-current drive circuit, the output of described rear class DC/DC constant-current drive circuit is connected with the power interface of described LED illumination source, the output of described light sensor and infrared sensor is connected with the input at described Single-chip Controlling center, the output at described Single-chip Controlling center is connected with the power end of AC/DC conversion circuit in the PWM control pin of DC/DC constant current chip in described rear class DC/DC constant-current drive circuit and described pre-process circuit respectively.
Described pre-process circuit comprises EMI filter circuit, PFC control circuit and AC/DC conversion circuit; Described EMI filter circuit accesses the input current of described external power supply, and described input current is input in the input of described rear class DC/DC constant-current drive circuit after described EMI filter circuit filtering, PFC control circuit correcting power factors and AC/DC conversion circuit AC-DC conversion.
The output of described AC/DC conversion circuit is also connected with auxiliary power supply circuit, and the output of described auxiliary power supply circuit is connected with the power interface of described Single-chip Controlling center, rear class DC/DC constant-current drive circuit, light sensor and infrared sensor respectively.
The control end of described rear class DC/DC constant-current drive circuit is also connected with thermal-shutdown circuit and overcurrent-overvoltage protecting circuit.
Described DC/DC constant current chip is BP2808 chip.
Describedly comprise the power factor for correcting described input current with treatment circuit and described input current be converted to the NCP1607 chip of direct current.
Intracardiacly in described Single-chip Controlling be provided with 80C51 single-chip microcomputer
The present invention has following beneficial effect:
Intelligent dimming LED drive power of the present invention is provided with light sensor, Single-chip Controlling center and rear class DC/DC constant-current drive circuit, the brightness of illumination of the described LED illumination source of adjustment that can be intelligent, simultaneously, by described infrared sensor real-time judge whether have people in illumination range, and realize the closedown of intelligence by Single-chip Controlling center and described pre-process circuit or open described LED illumination source, cabling is simple, low cost of manufacture, can reduce the loss of electric energy greatly simultaneously.
Accompanying drawing explanation
Fig. 1 is the theory diagram of described intelligent dimming LED drive power;
Fig. 2 is the circuit theory diagrams of pre-process circuit 1 in described intelligent dimming LED drive power;
Fig. 3 is the circuit theory diagrams of rear class DC/DC constant-current drive circuit 2 in described intelligent dimming LED drive power.
Wherein: 1 be pre-process circuit, 2 be rear class DC/DC constant-current drive circuit, 3 be LED illumination source, 4 be auxiliary power supply circuit, 5 be Single-chip Controlling center, 6 be infrared sensor, 7 be light sensor, 8 be thermal-shutdown circuit, 9 for overcurrent-overvoltage protecting circuit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
With reference to figure 1, intelligence dimming LED (Light Emitting Diode) driving power of the present invention comprises pre-process circuit 1, rear class DC/DC constant-current drive circuit 2, Single-chip Controlling center 5, auxiliary power supply circuit 4, light sensor 7, LED illumination source 3, 80C51 single-chip microcomputer is provided with in described Single-chip Controlling center 5, described pre-process circuit 1 comprises EMI filter circuit, PFC control circuit and AC/DC conversion circuit, the input of described EMI filter circuit is connected with external power supply, the output of described EMI filter circuit is connected with the input of described PFC control circuit, the output of described PFC control circuit is connected with the input of described AC/DC conversion circuit, the output of described AC/DC conversion circuit is connected with the input of described rear class DC/DC constant-current drive circuit 2 and the input of auxiliary power supply circuit 4, described PFC control circuit corrects the power factor of described input current by NCP1607 chip, described input current is converted to direct current by described NCP1607 chip by described AC/DC conversion circuit, the output of described rear class DC/DC constant-current drive circuit 2 is connected with the power interface of described LED illumination source 3, DC/DC constant current chip is provided with in described rear class DC/DC constant-current drive circuit 2, described DC/DC constant current chip is BP2808 chip.The output of described light sensor 7 and described infrared sensor 6 is connected with the input at described Single-chip Controlling center 5, the output at described Single-chip Controlling center 5 is connected with the Vcc pin position of NCP1607 chip in the PWM control pin of BP2808 chip in described rear class DC/DC constant-current drive circuit 2 and described AC/DC conversion circuit respectively, and the output of described auxiliary power supply circuit 4 is connected with the power interface of described Single-chip Controlling center 5, light sensor 7, infrared sensor 6 and rear class DC/DC constant-current drive circuit 2 respectively.In addition, the control end of described rear class DC/DC constant-current drive circuit 2 is also connected with thermal-shutdown circuit 8 and overcurrent-overvoltage protecting circuit 9.
Concrete operations of the present invention are as follows:
The intensity of illumination automatically opening or closing LED illumination source 3 described in described LED illumination source 3 and adjustment can be realized by intelligent dimming LED drive power of the present invention, specific as follows:
With reference to figure 2, input current is input in described pre-process circuit 1 by the input of EMI filter circuit by described external power supply, and described input current is input in described rear class DC/DC constant-current drive circuit 2 after described EMI filter circuit filtering, PFC control circuit correcting power factors and AC/DC conversion circuit AC-DC conversion.In addition; when described rear class DC/DC constant-current drive circuit 2 temperature is too high; described thermal-shutdown circuit 8 can cut off the power supply of described rear class DC/DC constant-current drive circuit 2; when the overtension of described rear class DC/DC constant-current drive circuit 2 or electric current too high time, described overcurrent-overvoltage protecting circuit 9 can cut off the power supply of described rear class DC/DC constant-current drive circuit 2.
With reference to figure 3, input current is converted to direct current by described AC/DC conversion circuit, and the input current after conversion is input to the input of described rear class DC/DC constant-current drive circuit 2, first described input current is converted to continuous current by described rear class DC/DC constant-current drive circuit 2, and the PWM ripple of described Single-chip Controlling center 5 output is received by the PWM control pin of BP2808 chip in described rear class DC/DC constant-current drive circuit 2, described BP2808 chip receives described PWM ripple, and according to described PWM ripple, described continuous current is divided into the electric current that many level constant are constant, wherein, the electric current of each grade is constant, the change of described continuous current is floated and is less than 5%.
Whether user is had in the illumination range that described infrared sensor 6 detects described LED illumination source 3, when described illumination range does not have user, described outer red transducer 6 produces the first variable signal, and is input in described Single-chip Controlling center 5 by described first variable signal by D/A converter; When described illumination range has user, described infrared sensor 6 produces the second variable signal, and is forwarded in described Single-chip Controlling center 5 by described second variable signal.Described Single-chip Controlling center 5 receives described first variable signal, and when described Single-chip Controlling center 5 does not receive described second variable signal in Preset Time, a low level control signal can be produced, described low level control signal is forwarded on the Vcc pin position of NCP1607 chip in described AC/DC conversion circuit by A/D converter simultaneously, when the Vcc pin position described low level control signal of input of described NCP1607 chip, described NCP1607 chip quits work, thus described rear class DC/DC constant-current drive circuit 2 is quit work, and then close described LED illumination source 3.In addition, when described Single-chip Controlling center 5 receives the second variable signal, and when described monolithic control centre does not receive described first variable signal within the time of presetting, the control signal of a high level can be produced, and by A/D converter, the control signal of described high level is forwarded on the Vcc pin position of NCP1607 chip in described AC/DC conversion circuit, when the control signal of the Vcc pin position input high level of described NCP1607 chip, described AC/DC conversion circuit normally works, thus described rear class DC/DC constant-current drive circuit 2 is normally worked, described rear class DC/DC constant-current drive circuit 2 can drive described LED illumination source 3 normally to work.In addition, when described Single-chip Controlling center 5 receives described first variable signal, and when described Single-chip Controlling center 5 receives described second variable signal within the time of presetting, then do not produce described low level control signal; When described Single-chip Controlling center 5 receives described second variable signal, and when described Single-chip Controlling center 5 receives described first variable signal within the time of presetting, then do not produce the control signal of described high level.
Simultaneously, the illumination intensity information of described light sensor 7 Real-time Collection external environment, and by D/A converter, described illumination intensity information is forwarded to described Single-chip Controlling center 5, described Single-chip Controlling center 5 is according to large young pathbreaker's intensity of illumination of intensity of illumination multiple grade respectively, the corresponding PWM ripple of each intensity of illumination grade simultaneously, described Single-chip Controlling center 5 receives described illumination intensity information, current light strength grade is obtained according to described illumination intensity information, and generate the PWM ripple corresponding to described current light strength grade, finally described PWM ripple is forwarded to the PWM control pin of BP2808 chip in described rear class DC/DC constant-current drive circuit 2 by A/D converter, described rear class DC/DC constant-current drive circuit 2 produces the electric current corresponding with described PWM ripple grade according to described PWM ripple, and described electric current is input in described LED illumination source 3, described LED illumination source 3 can show the intensity of illumination corresponding with the intensity of illumination of current outside environment.
Claims (2)
1. an intelligent dimming LED drive power, it is characterized in that, comprise pre-process circuit (1), rear class DC/DC constant-current drive circuit (2), Single-chip Controlling center (5), light sensor (7), infrared sensor (6) and LED illumination source (3);
The input of described pre-process circuit (1) is connected with external power supply, the output of described pre-process circuit (1) is connected with the input of described rear class DC/DC constant-current drive circuit (2), the output of described rear class DC/DC constant-current drive circuit (2) is connected with the power interface of described LED illumination source (3), the output of described light sensor (7) and infrared sensor (6) is connected with the input of described Single-chip Controlling center (5), the output of described Single-chip Controlling center (5) is connected with the PWM control pin of DC/DC constant current chip in described rear class DC/DC constant-current drive circuit (2) and the power end of the middle AC/DC conversion circuit of described pre-process circuit (1) respectively,
The control end of described rear class DC/DC constant-current drive circuit (2) is also connected with thermal-shutdown circuit (8) and overcurrent-overvoltage protecting circuit (9); Described pre-process circuit (1) comprises EMI filter circuit, PFC control circuit and AC/DC conversion circuit; Described EMI filter circuit accesses the input current of described external power supply, and described input current is input in the input of described rear class DC/DC constant-current drive circuit (2) after described EMI filter circuit filtering, PFC control circuit correcting power factors and AC/DC conversion circuit AC-DC conversion; 80C51 single-chip microcomputer is provided with in described Single-chip Controlling center (5);
Input current is input in described pre-process circuit (1) by the input of EMI filter circuit by described external power supply, and described input current is input in described rear class DC/DC constant-current drive circuit (2) after described EMI filter circuit filtering, PFC control circuit correcting power factors and AC/DC conversion circuit AC-DC conversion; In addition, when described rear class DC/DC constant-current drive circuit (2) temperature is too high, described thermal-shutdown circuit (8) can cut off the power supply of described rear class DC/DC constant-current drive circuit (2), when the overtension of described rear class DC/DC constant-current drive circuit (2) or electric current too high time, described overcurrent-overvoltage protecting circuit (9) can cut off the power supply of described rear class DC/DC constant-current drive circuit (2); The output of described AC/DC conversion circuit is also connected with auxiliary power supply circuit (4), and the output of described auxiliary power supply circuit (4) is connected with the power interface of described Single-chip Controlling center (5), rear class DC/DC constant-current drive circuit (2), light sensor (7) and infrared sensor (6) respectively; Described pre-process circuit (1) comprises the power factor for correcting described input current and described input current is converted to the NCP1607 chip of direct current.
2. intelligent dimming LED drive power according to claim 1, is characterized in that, described DC/DC constant current chip is BP2808 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310147702.8A CN103228083B (en) | 2013-04-25 | 2013-04-25 | A kind of intelligent dimming LED drive power |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310147702.8A CN103228083B (en) | 2013-04-25 | 2013-04-25 | A kind of intelligent dimming LED drive power |
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| CN103228083A CN103228083A (en) | 2013-07-31 |
| CN103228083B true CN103228083B (en) | 2016-04-06 |
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| CN201310147702.8A Active CN103228083B (en) | 2013-04-25 | 2013-04-25 | A kind of intelligent dimming LED drive power |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103619093A (en) * | 2013-10-29 | 2014-03-05 | 汤志新 | A LED integrated light source |
| CN104486889B (en) * | 2014-12-26 | 2017-05-03 | 深圳万润科技股份有限公司 | Control method of photosensitive LED lamp |
| CN106524081A (en) * | 2016-11-16 | 2017-03-22 | 南京东晖光电有限公司 | LED matrix illumination drive and control system |
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| CN101969725A (en) * | 2010-10-11 | 2011-02-09 | 复旦大学 | Intelligent general light-emitting diode (LED) street lamp illuminating power supply system |
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| CN202209547U (en) * | 2011-08-17 | 2012-05-02 | 深圳市华彩光电有限公司 | Novel energy-saving LED daylight lamp |
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2013
- 2013-04-25 CN CN201310147702.8A patent/CN103228083B/en active Active
Patent Citations (5)
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|---|---|---|---|---|
| EP0859453A2 (en) * | 1997-02-14 | 1998-08-19 | Switched Reluctance Drives Limited | Power supply circuit for a control circuit |
| CN101969725A (en) * | 2010-10-11 | 2011-02-09 | 复旦大学 | Intelligent general light-emitting diode (LED) street lamp illuminating power supply system |
| CN202077124U (en) * | 2011-05-31 | 2011-12-14 | 深圳创维－Rgb电子有限公司 | Television and standby control circuit thereof |
| CN202209547U (en) * | 2011-08-17 | 2012-05-02 | 深圳市华彩光电有限公司 | Novel energy-saving LED daylight lamp |
| CN202455601U (en) * | 2011-12-26 | 2012-09-26 | 浙江加兰节能科技股份有限公司 | Intelligent light-controlled LED (Light Emitting Diode) lighting device |
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Inventor after: He Xiang Inventor after: Li Huali Inventor before: Shi Yongsheng Inventor before: Gao Danyang Inventor before: Zhang Jianfei Inventor before: Ning Qingju |
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Effective date of registration: 20170605 Address after: 528415 Guangdong Province Road Jucheng Zhongshan City Xiaolan Town, No. 56 two floor Patentee after: ZHONGSHAN NIUBAO ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 710021 Shaanxi province Xi'an Weiyang University Park No. 1 Patentee before: SHAANXI University OF SCIENCE & TECHNOLOGY |
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Address after: 528415 Building A, Baocheng Road, Xiaolan Town, Zhongshan City, Guangdong Province Patentee after: ZHONGSHAN NIUBAO ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 528415 Guangdong Province Road Jucheng Zhongshan City Xiaolan Town, No. 56 two floor Patentee before: ZHONGSHAN NIUBAO ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Address after: Floor 7-9, Building 1, No. 7, Baofeng Baocheng Road, Xiaolan Town, Zhongshan City, Guangdong Province, 528415 Patentee after: Guangdong Niubao Power Technology Co.,Ltd. Address before: 528415 building a, No.8 Baocheng Road, Xiaolan Town, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN NIUBAO ELECTRONIC TECHNOLOGY Co.,Ltd. |
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