CN203554760U - Bimodal light modulation circuit and illumination equipment - Google Patents
Bimodal light modulation circuit and illumination equipment Download PDFInfo
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- CN203554760U CN203554760U CN201320691474.6U CN201320691474U CN203554760U CN 203554760 U CN203554760 U CN 203554760U CN 201320691474 U CN201320691474 U CN 201320691474U CN 203554760 U CN203554760 U CN 203554760U
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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 discloses a bimodal light modulation circuit and illumination equipment. The bimodal light modulation circuit comprises a light modulation signal input end, a voltage division circuit, a switching circuit and a controller, wherein one end of the voltage division circuit is connected with a dc power supply via a switching path of the switching circuit, the other end of the voltage division circuit is grounded, a voltage division node of the voltage division circuit is connected with the light modulation signal input end; and the controller sample a level at the voltage division node of the voltage division circuit, generates a switching control signal and outputs the switching control signal to the control end of the switching circuit. The bimodal light modulation circuit of the utility model combines a resistive light modulation mode with a level light modulation mode, the two light modulation modes share one circuit, and only one light modulation signal input end exists, thereby effectively avoiding the problem that light modulation signal input ends are connected for mistake in different light modulation modes, simplifying the design, saving the cost, and providing convenience for use. When the bimodal light modulation circuit is applied to the illumination equipment, the illumination equipment can be adjusted conveniently according to requirements, and satisfied illumination effect can be reached.
Description
Technical field
The utility model belongs to lighting control technique field, specifically, and the lighting apparatus that relates to a kind of adjusting control circuit for lighting source and adopt described adjusting control circuit design.
Background technology
LED has the advantages such as luminous efficiency is high, energy consumption is low, the life-span is long, and has good dimming behavior, and range of application is more and more wider.
The dimming function of LED illumination applies dim signal to its power supply and realizes.The generation of dim signal has several different methods, wherein resistance and level are two kinds of the most common methods, by the size of adjusting resistance values or the size of level magnitude, change the size of the dim signal that is applied to power supply, thereby realize the adjusting to LED brightness of illumination.
At present, LED illumination generally only provides a kind of dimming mode, and the fewer of multiple dimming mode is provided.For the circuit that multiple dimming mode can be provided simultaneously, current design is all for various dimming modes, independently light adjusting circuit to be set separately in LED lighting circuit, just causes thus circuit design very complicated, and cost increases.And, due to the LED lighting circuit of the multiple dimming mode of this support, when actual light modulation, meeting choice for use a kind of dimming mode wherein, the corresponding light adjusting circuit of another dimming mode, by idle, has caused the serious waste of hardware resource thus.
Summary of the invention
The purpose of this utility model is to provide a kind of dual-mode FM optical circuit, has realized the support of circuit kit to two kinds of dimming modes, has solved the lighting circuit complex structural designs of the multiple dimming mode of existing support, the problem of serious waste of resources.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A dual-mode FM optical circuit, comprises dim signal input, bleeder circuit, switching circuit and controller; One end of described bleeder circuit connects DC power supply by the switch ways of switching circuit, other end ground connection, and the dividing potential drop node of bleeder circuit connects described dim signal input; The level of the dividing potential drop Nodes of described controller sampling bleeder circuit, and generate the control end that switch controlling signal exports described switching circuit to.
Further, described bleeder circuit comprises a plurality of dividing potential drop nodes, and described dim signal input is connected the different dividing potential drop nodes of bleeder circuit with controller.
Preferably, include and connect successively three divider resistances in described bleeder circuit, the first divider resistance connects described switching circuit, and the second divider resistance is connected between the first divider resistance and the 3rd divider resistance; Described dim signal input comprises two terminals, and one of them terminal connects the intermediate node of the first divider resistance and the second divider resistance, another terminal ground connection; Described controller connects the intermediate node of the second divider resistance and the 3rd divider resistance.
In order to prevent that level signal when dim signal input access from damaging controller when excessive, in described dual-mode FM optical circuit, be also provided with voltage clamp circuit, described voltage clamp circuit is connected bleeder circuit port with controller is connected.
Further, in described voltage clamp circuit, include two forward diodes of series connection; Wherein, the negative electrode of the first diode connects another DC power supply, the plus earth of the second diode, and the intermediate node of two diodes is connected with the port that described controller is connected bleeder circuit.
As a kind of preferred circuit, set up form, in described switching circuit, be provided with a NPN type triode and a positive-negative-positive triode, the base stage of described NPN type triode receives the switch controlling signal of controller output, grounded emitter, collector electrode connects the base stage of positive-negative-positive triode, and is connected with described DC power supply; The emitter of described positive-negative-positive triode connects described DC power supply, and collector electrode connects described bleeder circuit.
Preferably, the base stage of described NPN type triode connects described controller by the current-limiting resistance of series connection, receives the switch controlling signal of controller output; The base stage of described positive-negative-positive triode connects the collector electrode of NPN type triode by a resistance, by another one resistance, connect described DC power supply.
Preferably, described controller is single-chip microcomputer, utilizes described bleeder circuit and the switching circuit of the corresponding connection of two ports of single-chip microcomputer.
Further, at described dim signal input, access the resistance of different resistances or the level signal of different amplitudes.
Based on above-mentioned dual-mode FM optical circuit, the utility model has also proposed a kind of lighting apparatus that adopts described dual-mode FM optical circuit, described lighting apparatus comprises illuminating lamp, connects power supply circuits and the dual-mode FM optical circuit of illuminating lamp, and described dual-mode FM optical circuit comprises dim signal input, bleeder circuit, switching circuit and controller; One end of described bleeder circuit connects DC power supply by the switch ways of switching circuit, other end ground connection, and the dividing potential drop node of bleeder circuit connects described dim signal input; The level of the dividing potential drop Nodes of described controller sampling bleeder circuit, and generate the control end that switch controlling signal exports described switching circuit to; Controller in described dual-mode FM optical circuit outputs control signals to described power supply circuits, and the power supply size that exports illuminating lamp by changing power supply circuits to is carried out the brightness of adjusting illuminating lamp.
Compared with prior art, advantage of the present utility model and good effect are: dual-mode FM optical circuit of the present utility model unites two into one resistance light-modulating mode and level light-modulating mode, two kinds of light-modulating modes share same circuit, and dim signal input only has one, effectively avoided the problem of dim signal input wrong under different light-modulating modes, simplified design, provide cost savings, improved the flexibility of product, convenient for users, improved the competitiveness of product.Be applied in lighting apparatus, can to lighting apparatus, be regulated easily according to demand, thereby reached satisfied illuminating effect.
Read by reference to the accompanying drawings after the detailed description of the utility model execution mode, other feature of the present utility model and advantage will become clearer.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of embodiment of the dual-mode FM optical circuit that proposes of the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
The utility model, for the lighting apparatus with light modulation demand, has proposed a kind of dual-mode FM optical circuit, by resistance light-modulating mode and level light-modulating mode are united two into one, shares same circuit, has reached simplified design, cost-effective object.
Below in conjunction with Fig. 1, by a specific embodiment, physical circuit design of the present utility model and operation principle are described in detail.
Embodiment mono-, shown in Figure 1, the dual-mode FM optical circuit of the present embodiment is mainly comprised of dim signal input, bleeder circuit, switching circuit and controller, wherein, one end of described bleeder circuit connects DC power supply V1 by the switch ways of switching circuit, the other end connects ground, and the dividing potential drop node of bleeder circuit connects described dim signal input.The level of the dividing potential drop Nodes of described controller sampling bleeder circuit, and generate according to different level the control end that different switch controlling signals exports described switching circuit to.
In the present embodiment, described controller is preferably single-chip microcomputer, utilize the port A of single-chip microcomputer to be connected described switching circuit and bleeder circuit with port B correspondence, the port B of described single-chip microcomputer connects the dividing potential drop node of bleeder circuit, the level of sampling dividing potential drop Nodes, single-chip microcomputer generates switch controlling signal according to the level of sampling, and by port A, transfers to the control end of switching circuit, the break-make of control switch circuit.
Preferably, described bleeder circuit includes a plurality of dividing potential drop nodes, and dim signal input and single-chip microcomputer are connected respectively the different dividing potential drop nodes of bleeder circuit.
A kind of preferred design as the present embodiment, three divider resistance R1, R5 and R6 that described bleeder circuit preferably connects successively form, shown in Figure 1, the first divider resistance R1 connects described switching circuit, and the second divider resistance R5 is connected between the first divider resistance R1 and the 3rd divider resistance R6.Described dim signal input comprises terminal DIM+ and terminal DIM-, and wherein terminal DIM+ connects the intermediate node of the first divider resistance R1 and the second divider resistance R5, and terminal DIM-connects ground; The port B of described single-chip microcomputer connects the intermediate node of the second divider resistance R5 and the 3rd divider resistance R6.
What described dim signal input accessed is the resistance of different resistances or the level signal of different amplitudes.In order to prevent that level signal when dim signal input access from damaging single-chip microcomputer when excessive, in described dual-mode FM optical circuit, be also provided with voltage clamp circuit, described voltage clamp circuit is connected with the port B of single-chip microcomputer.Preferably, in described voltage clamp circuit, include two forward diode D1 and the diode D2 of series connection; Wherein, the negative electrode of the first diode D1 connects DC power supply V2, the plus earth of the second diode D2, and the first diode D1 and the intermediate node of the second diode D2 and the port B of described single-chip microcomputer are connected.When the level signal of dim signal input access is excessive, the intermediate node of the second divider resistance R5 and the 3rd divider resistance R6 and the pressure reduction of DC power supply V2 are greater than the conducting voltage of the first diode D1, the first diode D1 forward conduction, the voltage at the first diode D1 two ends is clamped at a fixed value, and (germanium tube is about 0.3V, silicone tube is about 0.7V), the magnitude of voltage of the intermediate node of the second divider resistance R5 and the 3rd divider resistance R6 is clamped at a fixed value, also the magnitude of voltage of the intermediate node of the second divider resistance R5 and the 3rd divider resistance R6 is the conduction voltage drop sum of DC power supply V2 and the first diode D1.When dim signal input input be negative voltage time, the second diode D2 forward conduction, the voltage at the second diode D2 two ends is clamped at a fixed value, and the magnitude of voltage of the intermediate node of the second divider resistance R5 and the 3rd divider resistance R6 is poor with the conduction voltage drop of the second diode D2 systematically.
A kind of preferred design as the present embodiment, in described switching circuit, be provided with a NPN type triode Q2 and a positive-negative-positive triode Q1, the base stage of described NPN type triode Q2 receives the switch controlling signal of single-chip microcomputer output, grounded emitter, collector electrode connects the base stage of positive-negative-positive triode Q1, and is connected with described DC power supply V1; The emitter of described positive-negative-positive triode Q1 connects described DC power supply V1, and collector electrode connects described bleeder circuit.Preferably, the base stage of described NPN type triode Q2 connects described single-chip microcomputer by the current-limiting resistance R4 of series connection, receives the switch controlling signal of single-chip microcomputer output; The base stage of described positive-negative-positive triode Q1 connects the collector electrode of NPN type triode Q2 by resistance R 3, by resistance R 2, connect described DC power supply V1.
When the port A of described single-chip microcomputer output low level, NPN type triode Q2 and positive-negative-positive triode Q1 cut-off; When port A output high level, the ground level voltage of NPN type triode Q2 is drawn high, and enters conducting state, thereby the ground level voltage of positive-negative-positive triode Q1 is dragged down, therefore positive-negative-positive triode Q1 conducting, thus make DC power supply V1 transfer to bleeder circuit by the switch ways of positive-negative-positive triode Q1.
Certainly, described switching circuit also can adopt one or more triodes of other types, or the controllable switch element such as field effect transistor, controllable silicon carries out the specific design of circuit, the present embodiment be not limited in above for example.
Described dual-mode FM optical circuit is applied in lighting apparatus, described lighting apparatus comprises illuminating lamp, connects power supply circuits and the described dual-mode FM optical circuit of illuminating lamp, the single-chip microcomputer of described dual-mode FM optical circuit generates control signal and outputs to described power supply circuits, and the power supply size that exports illuminating lamp by changing power supply circuits to is carried out the brightness of adjusting illuminating lamp.
In the present embodiment, described dim signal input access is the resistance of different resistances or the level signal of different amplitudes.When dim signal input access be resistance R X time, it is the intermediate node of resistance R X mono-termination the first divider resistance R1 and the second divider resistance R5, other end ground connection, the port B of described single-chip microcomputer gather the second divider resistance R5 and the 3rd divider resistance R6 intermediate node voltage and transfer to single-chip microcomputer.Because the port A of single-chip microcomputer initial state when the light adjusting circuit electrifying startup is low level, so NPN type triode Q2 and positive-negative-positive triode Q1 be in cut-off state, and DC power supply V1 is not transferred to bleeder circuit, so the voltage that single-chip microcomputer samples is 0.Single-chip Controlling port A exports high level, after port A output high level, NPN type triode Q2 and positive-negative-positive triode Q1 conducting, thereby DC power supply V1 can transfer to bleeder circuit, transfer to successively the first divider resistance R1, the second divider resistance R5 and the 3rd divider resistance R6, the voltage that single-chip microcomputer samples is not 0, now port A is high level, single-chip microcomputer generates control signal and exports described power supply circuits to according to the magnitude of voltage sampling, change the power supply size that power supply circuits export illuminating lamp to, the brightness of adjusting illuminating lamp.
When dim signal input access be level signal time, level signal transfers to the second divider resistance R5 and the 3rd divider resistance R6 successively, it is not 0 that the port B of single-chip microcomputer samples voltage, now port A remains on initial state, for low level, single-chip microcomputer generates control signal and exports described power supply circuits to according to the magnitude of voltage sampling, and changes the power supply size that power supply circuits export illuminating lamp to, the brightness of adjusting illuminating lamp.
Certainly; the above is only a kind of preferred implementation of the present utility model, for those skilled in the art, is not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1. a dual-mode FM optical circuit, is characterized in that: comprise dim signal input, bleeder circuit, switching circuit and controller; One end of described bleeder circuit connects DC power supply by the switch ways of switching circuit, other end ground connection, and the dividing potential drop node of bleeder circuit connects described dim signal input; The level of the dividing potential drop Nodes of described controller sampling bleeder circuit, and generate the control end that switch controlling signal exports described switching circuit to.
2. dual-mode FM optical circuit according to claim 1, is characterized in that: described bleeder circuit comprises a plurality of dividing potential drop nodes, and described dim signal input is connected the different dividing potential drop nodes of bleeder circuit with controller.
3. dual-mode FM optical circuit according to claim 2, it is characterized in that: in described bleeder circuit, include and connect successively three divider resistances, the first divider resistance connects described switching circuit, and the second divider resistance is connected between the first divider resistance and the 3rd divider resistance; Described dim signal input comprises two terminals, and one of them terminal connects the intermediate node of the first divider resistance and the second divider resistance, another terminal ground connection; Described controller connects the intermediate node of the second divider resistance and the 3rd divider resistance.
4. according to the dual-mode FM optical circuit described in any one in claims 1 to 3, it is characterized in that: in described dual-mode FM optical circuit, be also provided with voltage clamp circuit, described voltage clamp circuit is connected bleeder circuit port with controller is connected.
5. dual-mode FM optical circuit according to claim 4, is characterized in that: in described voltage clamp circuit, include two forward diodes of series connection; Wherein, the negative electrode of the first diode connects another DC power supply, the plus earth of the second diode, and the intermediate node of two diodes is connected with the port that described controller is connected bleeder circuit.
6. according to the dual-mode FM optical circuit described in any one in claims 1 to 3, it is characterized in that: in described switching circuit, be provided with a NPN type triode and a positive-negative-positive triode, the base stage of described NPN type triode receives the switch controlling signal of controller output, grounded emitter, collector electrode connects the base stage of positive-negative-positive triode, and is connected with described DC power supply; The emitter of described positive-negative-positive triode connects described DC power supply, and collector electrode connects described bleeder circuit.
7. dual-mode FM optical circuit according to claim 6, is characterized in that: the base stage of described NPN type triode connects described controller by the current-limiting resistance of series connection, receives the switch controlling signal of controller output; The base stage of described positive-negative-positive triode connects the collector electrode of NPN type triode by a resistance, by another one resistance, connect described DC power supply.
8. according to the dual-mode FM optical circuit described in any one in claims 1 to 3, it is characterized in that: described controller is single-chip microcomputer, utilize described bleeder circuit and the switching circuit of the corresponding connection of two ports of single-chip microcomputer.
9. according to the dual-mode FM optical circuit described in any one in claims 1 to 3, it is characterized in that: at described dim signal input, access the resistance of different resistances or the level signal of different amplitudes.
10. a lighting apparatus, the power supply circuits and the light adjusting circuit that comprise illuminating lamp, connection illuminating lamp, it is characterized in that: described light adjusting circuit is dual-mode FM optical circuit as claimed in any one of claims 1-9 wherein, controller in described dual-mode FM optical circuit outputs control signals to described power supply circuits, and the power supply size that exports illuminating lamp by changing power supply circuits to is carried out the brightness of adjusting illuminating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691474.6U CN203554760U (en) | 2013-11-05 | 2013-11-05 | Bimodal light modulation circuit and illumination equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691474.6U CN203554760U (en) | 2013-11-05 | 2013-11-05 | Bimodal light modulation circuit and illumination equipment |
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| CN203554760U true CN203554760U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320691474.6U Expired - Fee Related CN203554760U (en) | 2013-11-05 | 2013-11-05 | Bimodal light modulation circuit and illumination equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211474A (en) * | 2016-08-26 | 2016-12-07 | 合肥惠科金扬科技有限公司 | The light adjusting circuit of the multiple dimming mode of a kind of compatibility and display device |
| CN106793279A (en) * | 2016-12-13 | 2017-05-31 | 四川长虹电子部品有限公司 | A kind of adjustable constant current output power module and implementation method |
-
2013
- 2013-11-05 CN CN201320691474.6U patent/CN203554760U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211474A (en) * | 2016-08-26 | 2016-12-07 | 合肥惠科金扬科技有限公司 | The light adjusting circuit of the multiple dimming mode of a kind of compatibility and display device |
| CN106211474B (en) * | 2016-08-26 | 2018-04-17 | 合肥惠科金扬科技有限公司 | A kind of light adjusting circuit and display device of a variety of dimming modes of compatibility |
| CN106793279A (en) * | 2016-12-13 | 2017-05-31 | 四川长虹电子部品有限公司 | A kind of adjustable constant current output power module and implementation method |
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| Date | Code | Title | Description |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20171105 |