CN203608428U - Four-in-one light modulation circuit of LED driving power supply - Google Patents
Four-in-one light modulation circuit of LED driving power supply Download PDFInfo
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- CN203608428U CN203608428U CN201320815615.0U CN201320815615U CN203608428U CN 203608428 U CN203608428 U CN 203608428U CN 201320815615 U CN201320815615 U CN 201320815615U CN 203608428 U CN203608428 U CN 203608428U
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- light modulation
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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 utility model relates to a four-in-one light modulation circuit of an LED driving power supply, belonging to the field of LED illumination control. The four-in-one light modulation circuit comprises a single-chip microcomputer and a light modulation signal interface capable of receiving resistance light modulation signals, voltage light modulation signals and PWM light modulation signals. The light modulation signal interface is connected with the single-chip microcomputer, a resistor power supply circuit which can supply power to a resistor when the light modulation signal interface receives the resistance light modulation signals is connected between the single-chip microcomputer and the light modulation interface, and the single-chip microcomputer is also connected with a timing light modulation circuit which can provide timing light modulation signals when the light modulation interface does not receive any of the resistance light modulation signals, voltage light modulation signals and PWM light modulation signals. The four-in-one light modulation circuit has the advantages that an external signal input port automatically identifies four light modulation states without artificial intervention, an external resistor of a timing port automatically selects timing modes, identification is completely intelligent, the structure is simple, the cost performance and production efficiency are high, and use is convenient.
Description
Technical field
The utility model belongs to LED illumination control field, relates to a kind of LED driving power four-in-one light adjusting circuit.
Background technology
Due to remarkable advantages such as LED illumination has efficiently, energy-saving and environmental protection, fast response time, vibration resistances, be the energy saving and environment friendly new generation of green lighting source of development low-carbon economy, in the application that replaces incandescent lamp and electricity-saving lamp, be trend of the times; Along with global climate transition and continuous surging energy prices, illumination series products field is proposed to the requirement of secondary energy-saving, LED illumination substitutes as the upgrading of incandescent lamp and electricity-saving lamp and the illumination of other class, also must be in its driving power integrated various dimming functions that can compatible former conventional lamp, and the feature driving with LED illumination, embodies its exclusive novel dimming mode.The power supply in prior art with dimming function uses analog circuit to realize dimming function more, only with wherein one or both functions of compatible resistance/voltage/PWM dimming function, can not comprehensive, indiscriminate, simple compatibility all light-modulating modes and new light modulation demand timing.So, must develop and design there is adjustable resistance light modulation, the simple and reliable light adjusting circuit of the light modulation of 0-10V direct voltage, PWM impulse width modulation and light adjusting and timing dimming function, thereby realize the secondary energy-saving of LED illumination, have more market value.
For prior art is improved, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of LED power supply four-in-one light adjusting circuit [application number: CN201310059718.3], comprise intelligent control circuit, resistance voltage PWM light modulation port, dividing potential drop and linearity circuit, 2.5V reference circuit, voltage-stabilized power supply circuit, rc filter circuit, electric current amplifies and voltage follower circuit, light modulation output control terminal mouth, it is characterized in that: intelligent control circuit and resistance voltage unidirectional connection of PWM light modulation port, dividing potential drop and linearity circuit pass through rc filter circuit, electric current amplifies and voltage follower circuit is connected to light modulation output control terminal mouth, voltage-stabilized power supply circuit respectively with light modulation output control terminal mouth, 2.5V reference circuit connects, 2.5V reference circuit, resistance voltage PWM light modulation port unidirectional dividing potential drop and the linearity circuit of being connected to respectively.
Although such scheme has solved the deficiencies in the prior art to a certain extent, three kinds of functions of compatible resistance/voltage/PWM dimming function, but it does not have the timing dimming circuit of timing dimming function, can not realize the secondary energy-saving of LED illumination, integrally adjusting light circuit complexity, cost is high, is difficult for promoting poor practicability.
Summary of the invention
The purpose of this utility model is for the problems referred to above, a kind of compatible resistance/voltage/PWM dimming function is provided and has the LED driving power four-in-one light adjusting circuit of the function of timing dimming.
For achieving the above object, the utility model has adopted following technical proposal: this LED driving power four-in-one light adjusting circuit, comprise single-chip microcomputer and can receive resistance dim signal, the dim signal interface of voltage dim signal and PWM dim signal, described dim signal interface is connected with single-chip microcomputer, between described single-chip microcomputer and dim signal interface, being connected with can be to the resistance power supply circuits of resistance power supply in the time that dim signal interface receives resistance dim signal, on described single-chip microcomputer, be also connected with and do not receive resistance dim signal when dim signal interface, the timing dimming circuit of timing dimming signal can be provided when any one dim signal in voltage dim signal and PWM dim signal.This four-in-one light adjusting circuit uses the dimming mode of single chip circuit, adopts the perfection of a dim signal interface to realize the input signal of resistance/voltage/PWM dimming function, and makes the linear corresponding dim signal of output current of LED driving power; If dim signal interface no signal, single-chip microcomputer enters timing mode automatically, searches for the level of another timed ports, according to the height of level, carries out timing controlled, and whole circuit is simple, and production efficiency is high.
In above-mentioned LED driving power four-in-one light adjusting circuit, on described single-chip microcomputer, be connected with linear voltage stabilization filter circuit, described linear voltage stabilization filter circuit is connected with LED driving power.Linear voltage stabilization filter circuit provides stable 0-10V voltage for LED driving power.
In above-mentioned LED driving power four-in-one light adjusting circuit, on described LED driving power, be also connected with switching circuit, described switching circuit is connected with single-chip microcomputer by one-level integrating circuit.Integral compensation in elimination and the FEEDBACK CONTROL of one-level integrating circuit amplifying circuit offset voltage, makes power supply signal stable.
In above-mentioned LED driving power four-in-one light adjusting circuit, described dim signal interface is connected with single-chip microcomputer by second order product parallel circuit.Integral compensation in elimination and the FEEDBACK CONTROL of second order product parallel circuit amplifying circuit offset voltage, stablizes the dim signal receiving.
In above-mentioned LED driving power four-in-one light adjusting circuit, described resistance is variable resistor.
Compared with prior art, the advantage of this LED driving power four-in-one light adjusting circuit is: by external signal input port prosthetic intervention four kinds of dimming state of identification automatically, and automatically select timing mode by the outer meeting resistance of timed ports, complete intelligent identification, simple in structure, cost performance and production efficiency are high, easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram that the utility model provides.
Fig. 2 is the concrete implementing circuit figure that the utility model provides.
In figure, single-chip microcomputer 1, dim signal interface 2, resistance power supply circuits 3, timing dimming circuit 4, linear voltage stabilization filter circuit 5, LED driving power 6, switching circuit 7, one-level integrating circuit 8, second order product parallel circuit 9.
Embodiment
As shown in Figure 1-2, this LED driving power four-in-one light adjusting circuit, comprise single-chip microcomputer 1 and can receive resistance dim signal, the dim signal interface 2 of voltage dim signal and PWM dim signal, dim signal interface 2 is connected with single-chip microcomputer 1, between single-chip microcomputer 1 and dim signal interface 2, being connected with can be to the resistance power supply circuits 3 of resistance power supply in the time that dim signal interface 2 receives resistance dim signal, on single-chip microcomputer 1, be also connected with and do not receive resistance dim signal when dim signal interface 2, the timing dimming circuit 4 of timing dimming signal can be provided when any one dim signal in voltage dim signal and PWM dim signal.This four-in-one light adjusting circuit uses the dimming mode of single-chip microcomputer 1 circuit, adopts dim signal interface 2 perfections to realize the input signal of resistance/voltage/PWM dimming function, and makes the linear corresponding dim signal of output current of driving power; If dim signal interface 2 no signals, single-chip microcomputer enters timing mode automatically, searches for the level of another timed ports, according to the height of level, carries out timing controlled, and whole circuit is simple, and production efficiency is high.
On single-chip microcomputer 1, be connected with linear voltage stabilization filter circuit 5, linear voltage stabilization filter circuit 5 is connected with LED driving power 6, and linear voltage stabilization filter circuit 5 provides stable 0-10V voltage for LED driving power 6.On LED driving power 6, be also connected with switching circuit 7, as further improvement, switching circuit 7 is connected with single-chip microcomputer 1 by one-level integrating circuit 8, and the integral compensation in elimination and the FEEDBACK CONTROL of one-level integrating circuit 8 amplifying circuit offset voltages makes power supply signal stable.As further improvement, dim signal interface 2 is connected with single-chip microcomputer 1 by second order product parallel circuit 9, integral compensation in elimination and the FEEDBACK CONTROL of second order product parallel circuit 9 amplifying circuit offset voltages, stablizes the dim signal receiving, and wherein resistance is variable resistor.
Principle of the present utility model:
The first, LED driving power 6 starts, and provides accessory power supply to switching circuit 7, and by linear voltage stabilization filter circuit 5, the voltage of stable output offers single-chip microcomputer 1, and single-chip microcomputer 1 starts self check, opens dim signal interface 2 and gathers dim signal.The second, the voltage of input and pwm signal are level and smooth through two-stage integration circuit, input single-chip microcomputer 1; If access dim signal is resistance, single-chip microcomputer 1 opening resistor power supply circuits 3, are converted to level signal input single-chip microcomputer 1 by resistance signal, complete the identification of three kinds of input signals.The 3rd, the level signal that single-chip microcomputer 1 receives, is output as pwm signal by single-chip microcomputer 1, is output as voltage signal through second order product parallel circuit 9, offers LED driving power 6 as reference signal.The 4th, if single-chip microcomputer 1 does not collect level signal, automatically jump to timing mode, according to the level value gathering, the concrete state of setting timing carries out timing controlled.The 5th, if single-chip microcomputer 1 does not collect level signal yet, single-chip microcomputer 1 enters without dim signal pattern, and output LED driving power 6 master reference level, make LED driving power 6 enter reset condition, by maximum constant current mode output services.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as single-chip microcomputer 1, dim signal interface 2, resistance power supply circuits 3, timing dimming circuit 4, linear voltage stabilization filter circuit 5, LED driving power 6, switching circuit 7, one-level integrating circuit 8, second order product parallel circuit 9 herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (5)
1. a LED driving power four-in-one light adjusting circuit, it is characterized in that, this light adjusting circuit comprises single-chip microcomputer (1) and can receive resistance dim signal, the dim signal interface (2) of voltage dim signal and PWM dim signal, described dim signal interface (2) is connected with single-chip microcomputer (1), between described single-chip microcomputer (1) and dim signal interface (2), being connected with can be to the resistance power supply circuits (3) of resistance power supply in the time that dim signal interface (2) receives resistance dim signal, on described single-chip microcomputer (1), be also connected with and do not receive resistance dim signal when dim signal interface (2), the timing dimming circuit (4) of timing dimming signal can be provided when any one dim signal in voltage dim signal and PWM dim signal.
2. LED driving power four-in-one light adjusting circuit according to claim 1, is characterized in that, on described single-chip microcomputer (1), is connected with linear voltage stabilization filter circuit (5), and described linear voltage stabilization filter circuit (5) is connected with LED driving power (6).
3. LED driving power four-in-one light adjusting circuit according to claim 2, it is characterized in that, on described LED driving power (6), be also connected with switching circuit (7), described switching circuit (7) is connected with single-chip microcomputer (1) by one-level integrating circuit (8).
4. according to the LED driving power four-in-one light adjusting circuit described in claim 1 or 2 or 3, it is characterized in that, described dim signal interface (2) is connected with single-chip microcomputer (1) by second order product parallel circuit (9).
5. LED driving power four-in-one light adjusting circuit according to claim 4, is characterized in that, described resistance is variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320815615.0U CN203608428U (en) | 2013-12-07 | 2013-12-07 | Four-in-one light modulation circuit of LED driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320815615.0U CN203608428U (en) | 2013-12-07 | 2013-12-07 | Four-in-one light modulation circuit of LED driving power supply |
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| Publication Number | Publication Date |
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| CN203608428U true CN203608428U (en) | 2014-05-21 |
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| CN201320815615.0U Expired - Fee Related CN203608428U (en) | 2013-12-07 | 2013-12-07 | Four-in-one light modulation circuit of LED driving power supply |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837247A (en) * | 2015-05-07 | 2015-08-12 | 成都东旭节能科技有限公司 | Four-in-one LED power supply linear dimming control circuit |
| CN106714371A (en) * | 2016-12-19 | 2017-05-24 | 惠州Tcl照明电器有限公司 | PWM (Pulse Width Modulation) isolating and light-dimming circuit, LED (Light Emitting Diode) light-dimming drive power supply and PWM isolating and light-dimming method |
| CN108093545A (en) * | 2017-12-15 | 2018-05-29 | 中国电子科技集团公司第四十研究所 | A kind of infrared polarizing light therapeutic equipment halogen lamp drive circuit |
| US10390400B1 (en) | 2015-12-03 | 2019-08-20 | Heartland, Inc. | Soft start circuitry for LED lighting devices with simultaneous dimming capability |
-
2013
- 2013-12-07 CN CN201320815615.0U patent/CN203608428U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837247A (en) * | 2015-05-07 | 2015-08-12 | 成都东旭节能科技有限公司 | Four-in-one LED power supply linear dimming control circuit |
| US10390400B1 (en) | 2015-12-03 | 2019-08-20 | Heartland, Inc. | Soft start circuitry for LED lighting devices with simultaneous dimming capability |
| CN106714371A (en) * | 2016-12-19 | 2017-05-24 | 惠州Tcl照明电器有限公司 | PWM (Pulse Width Modulation) isolating and light-dimming circuit, LED (Light Emitting Diode) light-dimming drive power supply and PWM isolating and light-dimming method |
| CN108093545A (en) * | 2017-12-15 | 2018-05-29 | 中国电子科技集团公司第四十研究所 | A kind of infrared polarizing light therapeutic equipment halogen lamp drive circuit |
| CN108093545B (en) * | 2017-12-15 | 2019-08-30 | 中国电子科技集团公司第四十一研究所 | A kind of infrared polarizing light therapeutic equipment halogen lamp drive circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20191207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |