CN202077238U - LED drive circuit and LED lamp - Google Patents
LED drive circuit and LED lamp Download PDFInfo
- Publication number
- CN202077238U CN202077238U CN2011201639067U CN201120163906U CN202077238U CN 202077238 U CN202077238 U CN 202077238U CN 2011201639067 U CN2011201639067 U CN 2011201639067U CN 201120163906 U CN201120163906 U CN 201120163906U CN 202077238 U CN202077238 U CN 202077238U
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- led
- drive circuit
- led drive
- chip microcomputer
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model is applicable to the technical field of illumination, and provides an LED drive circuit and an LED lamp. The LED drive circuit comprises a constant current circuit unit for providing constant current for the LED, an illumination transducer for detecting the illumination of the surrounding environment of the LED, and a single chip respectively connected with the constant current circuit unit and the illumination transducer. When the illumination detected by the illumination transducer exceeds the preset threshold, the single chip can be used for regulating the switch duty ratio of the constant current circuit unit and the intensity of the constant current, and controlling the illumination of the LED surrounding environment within the threshold through the constant current circuit unit, the illumination transducer and the single chip, thus guaranteeing to provide comfortable and stable illumination environment however the surrounding environment changes.
Description
Technical field
The utility model belongs to lighting technical field, relates in particular to a kind of led drive circuit and LED light fixture.
Background technology
LED is owing to have advantages such as volume is little, energy-conservation, long service life, become main trend in the development of light fixture industry, becomes the perfect light source that replaces conventional light source.
In the prior art, the common LED lamp tool brightness of environment around brightens suddenly or during deepening, can not automatically the LED light fixture be dimmed or lighten, and can't provide a comfortable stable lighting environment to the user.
The utility model content
The purpose of the utility model embodiment is to provide a kind of led drive circuit, be intended to solve the common LED lamp tool around the brightness of environment brighten suddenly or during deepening, can not automatically the LED light fixture be dimmed or lighten, the problem of a comfortable stable lighting environment can't be provided to the user.
The utility model embodiment is achieved in that a kind of led drive circuit, comprising:
The constant-current circuit unit of constant current is provided to LED;
Detect the illuminance transducer of the brightness value of LED surrounding environment;
The single-chip microcomputer that is connected respectively with described constant-current circuit unit and illuminance transducer.
The utility model embodiment also provides a kind of LED light fixture, and described light fixture comprises led drive circuit, and described led drive circuit comprises:
Provide constant current constant-current circuit unit to LED;
Detect the illuminance transducer of the brightness value of LED surrounding environment;
The single-chip microcomputer that is connected respectively with described constant-current circuit unit and illuminance transducer.
Further, described led drive circuit also comprises:
The luminance sensor that is connected with described single-chip microcomputer; And/or
The humidity sensor that is connected with described single-chip microcomputer.
Further, described led drive circuit also comprises:
The display unit that is connected with described single-chip microcomputer.
Further again, described led drive circuit also comprises:
What be connected with described single-chip microcomputer is provided with the unit.
Further again, described led drive circuit also comprises:
The communication unit that is connected with described single-chip microcomputer.
The utility model embodiment compared with prior art, beneficial effect is: by constant-current circuit unit, illuminance transducer and single-chip microcomputer, can be when the detected brightness value of illuminance transducer surpasses default illumination threshold value, regulate the duty cycle of switching of constant-current circuit unit by single-chip microcomputer, regulate the size of constant current, the brightness value of control LED surrounding environment is in the scope of illumination threshold value, thereby assurance can both provide a comfortable stable lighting environment no matter how surrounding environment changes.
Description of drawings
Fig. 1 is the theory diagram of the led drive circuit that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Among the utility model embodiment, by constant-current circuit unit, illuminance transducer and single-chip microcomputer, can be when the detected brightness value of illuminance transducer surpasses default illumination threshold value, regulate the duty cycle of switching of constant-current circuit unit by single-chip microcomputer, regulate the size of constant current, the brightness value of control LED surrounding environment is in the scope of illumination threshold value, thereby assurance can both provide a comfortable stable lighting environment no matter how surrounding environment changes.
The embodiment that the utility model embodiment provides is as follows:
A kind of led drive circuit comprises:
The constant-current circuit unit of constant current is provided to LED;
Detect the illuminance transducer of the brightness value of LED surrounding environment;
The single-chip microcomputer that is connected respectively with described constant-current circuit unit and illuminance transducer.
A kind of LED light fixture, described light fixture comprises led drive circuit, described led drive circuit comprises:
The constant-current circuit unit of constant current is provided to LED;
Detect the illuminance transducer of the brightness value of LED surrounding environment;
The single-chip microcomputer that is connected respectively with described constant-current circuit unit and illuminance transducer.
Below in conjunction with specific embodiment realization of the present utility model is described in detail:
See also Fig. 1, the utility model embodiment provides a kind of led drive circuit, comprising:
Constant-current circuit unit 5 is used for providing constant current to LED12;
Illuminance transducer 7 is used to detect the brightness value of LED12 surrounding environment;
The single-chip microcomputer 6 that is connected respectively with constant-current circuit unit 5 and illuminance transducer 7, be used for when illuminance transducer 7 detected brightness values surpass default illumination threshold value, then regulate the duty cycle of switching of constant-current circuit unit 5, regulate the size of constant current, the brightness value of control LED12 surrounding environment is in the scope of illumination threshold value.
Illustrate as follows:
For example, the light fixture that comprises a plurality of LED12 is operate as normal by day, it is cloudy suddenly to have spent a period of time, the light deepening, at this moment, the brightness value of illuminance transducer 7 detected LED12 surrounding environment descends, single-chip microcomputer 6 is just at illuminance transducer 7 detected brightness values during less than default illumination threshold value, regulate the duty cycle of switching of constant-current circuit 5, make constant-current circuit unit 5 that a bigger constant current is provided, improve the brightness value of LED12 surrounding environment.On the contrary, when weather is cleared up suddenly by the moon, the brightness value of illuminance transducer 7 detected LED12 surrounding environment rises, single-chip microcomputer 6 is just at illuminance transducer 7 detected brightness values during greater than default illumination threshold value, regulate the duty cycle of switching of constant-current circuit 5, make constant-current circuit unit 5 that a less constant current is provided, reduce the brightness value of LED12 surrounding environment.Thereby,, the brightness value of LED12 surrounding environment is remained in the stable illumination threshold range always no matter how external environment changes.
In the utility model embodiment, illuminance transducer 7 is arranged near the LED 12.
In the utility model embodiment, led drive circuit also comprises:
The display unit 10 that is connected with single-chip microcomputer 6 is used for display message.
In the utility model embodiment, led drive circuit also comprises:
The luminance sensor 8 that is connected with single-chip microcomputer 6 is used to detect the brightness value of user surrounding environment; And/or
The humidity sensor 9 that is connected with single-chip microcomputer 6 is used for the humidity value of testing environment.
In the utility model embodiment, single-chip microcomputer 6 also comprises:
The A/D converting unit is connected with luminance sensor 8, humidity sensor 9 respectively, is used for respectively luminance sensor 8, humidity sensor 9 detected analog signal conversion being become digital signal, to be shown by display unit 10.
Brightness and humidity by display unit 10 demonstration operational environments can make things convenient for the user to check.
In the utility model embodiment, led drive circuit also comprises:
What be connected with single-chip microcomputer 6 is provided with the unit, is used for default illumination threshold value.
In the utility model embodiment, led drive circuit also comprises:
The communication unit 11 that is connected with single-chip microcomputer 6 is used for and the data terminal communication.
Data terminal is specifically as follows portable terminal or computer.
In the utility model embodiment, led drive circuit also comprises:
Chuan Jie EMC filter unit 1, rectification unit 2, APFC (Active Power Factor Correction, Active Power Factor Correction) unit 3 and DC-DC (dc-dc conversion) unit 4 successively;
Described DC-DC unit 4 is connected in series with described constant-current circuit unit 5.
In embodiment of the present utility model, EMC filter unit 1 is used for the interference of filtering input current, sine wave output.Can suppress interference that led drive circuit itself produces and the interference of resisting electrical network by EMC filter unit 1.
DC-DC unit 4 is used for the voltage of APFC unit 3 outputs is changed into stable low pressure, supplies with constant-current circuit unit 5.
In the utility model embodiment, EMC filter unit 1, rectification unit 2, APFC unit 3, DC-DC unit 4 and constant-current circuit unit 5 are available circuit or device, and its detailed structure repeats no more.
The utility model embodiment also provides a kind of LED light fixture, and described LED light fixture comprises above-mentioned led drive circuit.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. a led drive circuit is characterized in that, comprising:
The constant-current circuit unit of constant current is provided to LED;
Detect the illuminance transducer of the brightness value of LED surrounding environment;
The single-chip microcomputer that is connected respectively with described constant-current circuit unit and illuminance transducer.
2. led drive circuit as claimed in claim 1 is characterized in that, described led drive circuit also comprises:
The luminance sensor that is connected with described single-chip microcomputer; And/or
The humidity sensor that is connected with described single-chip microcomputer.
3. led drive circuit as claimed in claim 1 or 2 is characterized in that, described led drive circuit also comprises:
The display unit that is connected with described single-chip microcomputer.
4. led drive circuit as claimed in claim 1 is characterized in that, described led drive circuit also comprises:
What be connected with described single-chip microcomputer is provided with the unit.
5. led drive circuit as claimed in claim 1 is characterized in that, described led drive circuit also comprises:
The communication unit that is connected with described single-chip microcomputer.
6. a LED light fixture is characterized in that, described light fixture comprises led drive circuit, and described led drive circuit comprises:
Provide constant current constant-current circuit unit to LED;
Detect the illuminance transducer of the brightness value of LED surrounding environment;
The single-chip microcomputer that is connected respectively with described constant-current circuit unit and illuminance transducer.
7. LED light fixture as claimed in claim 6 is characterized in that, described led drive circuit also comprises:
The luminance sensor that is connected with described single-chip microcomputer; And/or
The humidity sensor that is connected with described single-chip microcomputer.
8. as claim 6 or 7 described LED light fixtures, it is characterized in that described led drive circuit also comprises:
The display unit that is connected with described single-chip microcomputer.
9. LED light fixture as claimed in claim 6 is characterized in that, described led drive circuit also comprises:
What be connected with described single-chip microcomputer is provided with the unit.
10. LED light fixture as claimed in claim 6 is characterized in that, described led drive circuit also comprises:
The communication unit that is connected with described single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201639067U CN202077238U (en) | 2011-05-20 | 2011-05-20 | LED drive circuit and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201639067U CN202077238U (en) | 2011-05-20 | 2011-05-20 | LED drive circuit and LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202077238U true CN202077238U (en) | 2011-12-14 |
Family
ID=45115312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201639067U Expired - Fee Related CN202077238U (en) | 2011-05-20 | 2011-05-20 | LED drive circuit and LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202077238U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869157A (en) * | 2012-09-06 | 2013-01-09 | 安顺市安银科技有限公司 | Method for setting color of LED (light-emitting diode) lamp by on-off encoding of power supply switch |
| CN103179713A (en) * | 2011-12-20 | 2013-06-26 | 常熟卓辉光电科技有限公司 | Large-power light-emitting diode (LED) drive circuit |
| CN112576998A (en) * | 2020-12-11 | 2021-03-30 | 深圳市海洋王照明工程有限公司 | Portable working lamp |
-
2011
- 2011-05-20 CN CN2011201639067U patent/CN202077238U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103179713A (en) * | 2011-12-20 | 2013-06-26 | 常熟卓辉光电科技有限公司 | Large-power light-emitting diode (LED) drive circuit |
| CN102869157A (en) * | 2012-09-06 | 2013-01-09 | 安顺市安银科技有限公司 | Method for setting color of LED (light-emitting diode) lamp by on-off encoding of power supply switch |
| CN112576998A (en) * | 2020-12-11 | 2021-03-30 | 深圳市海洋王照明工程有限公司 | Portable working lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20190520 |