CN202617453U - Light-emitting diode (LED) lamp for adjusting color temperature by utilizing pulsation width modulation (PWM) controller - Google Patents
Light-emitting diode (LED) lamp for adjusting color temperature by utilizing pulsation width modulation (PWM) controller Download PDFInfo
- Publication number
- CN202617453U CN202617453U CN2012202562940U CN201220256294U CN202617453U CN 202617453 U CN202617453 U CN 202617453U CN 2012202562940 U CN2012202562940 U CN 2012202562940U CN 201220256294 U CN201220256294 U CN 201220256294U CN 202617453 U CN202617453 U CN 202617453U
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- led lamp
- pwm controller
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- pwm
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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
Abstract
The utility model discloses a light-emitting diode (LED) lamp for adjusting color temperature by utilizing a pulsation width modulation (PWM) controller. The LED lamp comprises a switching signal sampling circuit, a master control circuit, a PWM controller and an LED lamp for illumination, wherein the switching signal sampling circuit detects a switching turn-off signal in a circuit and generates a clock signal; the master control circuit receives the clock signal, generates at least three pulsation signals and respectively outputs the signals to the PWM controller; the PWM controller outputs different current signals and adjusts the brightness of the LED lamp according to the pulsation signals transmitted by the master control circuit; the switching signal sampling circuit is connected with the master control circuit; the master control circuit is connected with the PWM controller; and the PWM controller is connected with and controls the LED lamp. The LED lamp has a simple structure; by adoption of the PWM dimming technology, the light source stability is high, and the safety coefficient is high; and meanwhile, the color temperature of the LED lamp is adjusted.
Description
Technical field
The utility model relates to lighting field, particularly a kind of LED lamp that utilizes the PWM controller to regulate colour temperature.
Background technology
The LED illuminating lamp has advantages such as high light efficiency, long-life, environmental protection, also is a main trend that substitutes conventional light source.The external dimmer mode of LED is divided into usually: direct current light modulation and PWM light modulation.Because it is photochromic constant that the PWM light modulation has, and advantage such as good stability during low-light level, thereby widely adopted by those skilled in the art of the present technique.
Yet; Great majority only are to utilize the PWM light regulating technology that the brightness of light is regulated in the prior art; Special light sources environment such as, club indoor for some, bar then need be installed the light source of a plurality of different colour temperatures, and can not utilize same light source that colour temperature is effectively regulated.
Summary of the invention
To the problems referred to above, the purpose of the utility model is: propose the LED lamp that a kind of PWM of utilization controller is regulated colour temperature, realize the brightness of same light source and the adjusting of colour temperature.
The utility model solves the technical scheme that its technical problem adopted:
A kind of LED lamp that utilizes the PWM controller to regulate colour temperature comprises:
The switching signal sample circuit through the cut-off signals of switch in the testing circuit, and produces a clock signal;
Governor circuit, receive clock signal and generation at least three road pulse signals export the PWM controller respectively to;
The PWM controller transmits the brightness that the different current signal of pulse signal output is regulated the LED lamp according to governor circuit;
The LED lamp that is used to throw light on;
Said switching signal sample circuit connects governor circuit, and governor circuit connects the PWM controller again, and the PWM controller connects and control LED lamp
The particular circuit configurations of said switching signal sample circuit is: switch signal generator one end connects power supply; The other end connects the input voltage rectification circuit; The input voltage rectification circuit other end connects sampling network Rf; The sampling network Rf other end connects the input of comparator U1, and another input of comparator U1 connects benchmark Vd, and the output of comparator U1 is connected to governor circuit.
Said governor circuit comprises a single-chip microcomputer, and the input of single-chip microcomputer is connected with the output of comparator U1, and three outputs of single-chip microcomputer are connected to the PWM controller respectively.
Said PWM controller output end is connected to the LED lamp.
Said LED lamp comprises ruddiness, blue light and green glow.
Said LED lamp all is encapsulated in the glass lamp shade.
The beneficial effect of the utility model is: the utlity model has simple in structurely, and adopt the PWM light regulating technology, light source stability is good, and coefficient of safety is high, simultaneously, has also realized the adjusting to LED light color temperature.
Description of drawings
Fig. 1 is the utility model operation principle flow chart;
Fig. 2 is the utility model circuit diagram.
Embodiment
Combine accompanying drawing that the utility model is done further detailed explanation now.
As shown in Figure 1: a kind of LED lamp that utilizes the PWM controller to regulate colour temperature, comprising: the switching signal sample circuit through the cut-off signals of switch in the testing circuit, and produces a clock signal; Governor circuit, the receive clock signal also produces 3 road pulse signals and exports 3 PWM controllers respectively to; The PWM controller transmits the brightness that the different current signal of pulse signal output is regulated the LED lamp according to governor circuit; The LED lamp that is used to throw light on; Said switching signal sample circuit connects governor circuit, and governor circuit connects the PWM controller again, and the PWM controller connects and control LED lamp; The particular circuit configurations of said switching signal sample circuit is: switch signal generator one end connects power supply; The other end connects the input voltage rectification circuit; The input voltage rectification circuit other end connects sampling network Rf; The sampling network Rf other end connects the input of comparator U1, and another input of comparator U1 connects benchmark Vd, and the output of comparator U1 is connected to governor circuit.Said governor circuit comprises a single-chip microcomputer, and the input of single-chip microcomputer is connected with the output of comparator U1, and three outputs of single-chip microcomputer are connected to the PWM controller respectively.Said PWM controller output end is connected to the LED lamp.Said LED lamp comprises ruddiness, blue light and green glow.Said LED lamp all is encapsulated in the glass lamp shade.
In conjunction with accompanying drawing 2, the course of work of the utility model under the brief account.
After powering on; Switch signal generator sends switching signal, will reflect that through sampling network Rf the signal of input switch action is delivered to the comparator U1 that samples, and reflects the clock signal of input switch action through the relatively generation with sampling benchmark Vd; And deliver to single-chip microcomputer; Through the single-chip microcomputer analysis different pulse control signal is sent to the PWM controller then, controls the brightness value of the LED of R, G, three kinds of colors of B then by the PWM controller respectively, make it after colour mixture, to obtain different color temperature values.For example, when low, colour temperature presents white light at atmospheric visibility, and when atmospheric visibility was medium, colour temperature was positive white light; When visibility was high, colour temperature was cold white light at atmosphere.
The above-described preferred embodiment of utilizing specifies the utility model, and the scope of unrestricted the utility model.Those skilled in the art can be through after reading the utility model; Make trickle change and adjustment; For example: increase or reduce the quantity of LED lamp, adopt different classes of single-chip microcomputer, increase the replacement schemes such as quantity in PWM controller loop; Will the can yet be regarded as main idea place of the utility model does not also break away from the spirit and the scope of the utility model.
Claims (6)
1. a LED lamp that utilizes the PWM controller to regulate colour temperature is characterized in that, comprising:
The switching signal sample circuit through the cut-off signals of switch in the testing circuit, and produces a clock signal;
Governor circuit, receive clock signal and generation at least three road pulse signals export the PWM controller respectively to;
The PWM controller transmits the brightness that the different current signal of pulse signal output is regulated the LED lamp according to governor circuit;
The LED lamp that is used to throw light on;
Said switching signal sample circuit connects governor circuit, and governor circuit connects the PWM controller again, and the PWM controller connects and control LED lamp.
2. a kind of LED lamp that utilizes the PWM controller to regulate colour temperature as claimed in claim 1; It is characterized in that the particular circuit configurations of said switching signal sample circuit is: switch signal generator one end connects power supply, and the other end connects the input voltage rectification circuit; The input voltage rectification circuit other end connects sampling network Rf; The sampling network Rf other end connects the input of comparator U1, and another input of comparator U1 connects benchmark Vd, and the output of comparator U1 is connected to governor circuit.
3. a kind of LED lamp that utilizes the PWM controller to regulate colour temperature as claimed in claim 1; It is characterized in that; Said governor circuit comprises a single-chip microcomputer, and the input of single-chip microcomputer is connected with the output of comparator U1, and three outputs of single-chip microcomputer are connected to the PWM controller respectively.
4. a kind of LED lamp that utilizes the PWM controller to regulate colour temperature as claimed in claim 1 is characterized in that said PWM controller is divided at least 3 groups, and every group of output all connects the some LED lamps of control.
5. a kind of LED lamp that utilizes the PWM controller to regulate colour temperature as claimed in claim 1 is characterized in that said LED lamp comprises the LED lamp of ruddiness, blue light and three kinds of primary colors of green glow.
6. a kind of LED lamp that utilizes the PWM controller to regulate colour temperature as claimed in claim 5 is characterized in that said LED lamp all is encapsulated in the glass lamp shade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202562940U CN202617453U (en) | 2012-06-01 | 2012-06-01 | Light-emitting diode (LED) lamp for adjusting color temperature by utilizing pulsation width modulation (PWM) controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202562940U CN202617453U (en) | 2012-06-01 | 2012-06-01 | Light-emitting diode (LED) lamp for adjusting color temperature by utilizing pulsation width modulation (PWM) controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202617453U true CN202617453U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202562940U Expired - Fee Related CN202617453U (en) | 2012-06-01 | 2012-06-01 | Light-emitting diode (LED) lamp for adjusting color temperature by utilizing pulsation width modulation (PWM) controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202617453U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740560A (en) * | 2012-06-01 | 2012-10-17 | 浙江中怿光电有限公司 | LED (Light Emitting Diode) lamp adjusting color temperature by adopting (PWM Pulse-Width Modulation) controller |
| CN107295720A (en) * | 2017-08-01 | 2017-10-24 | 深圳市莱福德光电有限公司 | Intelligent LED lamp light modulating device, system and method |
-
2012
- 2012-06-01 CN CN2012202562940U patent/CN202617453U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740560A (en) * | 2012-06-01 | 2012-10-17 | 浙江中怿光电有限公司 | LED (Light Emitting Diode) lamp adjusting color temperature by adopting (PWM Pulse-Width Modulation) controller |
| CN107295720A (en) * | 2017-08-01 | 2017-10-24 | 深圳市莱福德光电有限公司 | Intelligent LED lamp light modulating device, system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20140601 |