CN201039569Y - Sine wave packing electronic light adjuster - Google Patents
Sine wave packing electronic light adjuster Download PDFInfo
- Publication number
- CN201039569Y CN201039569Y CNU2007201465571U CN200720146557U CN201039569Y CN 201039569 Y CN201039569 Y CN 201039569Y CN U2007201465571 U CNU2007201465571 U CN U2007201465571U CN 200720146557 U CN200720146557 U CN 200720146557U CN 201039569 Y CN201039569 Y CN 201039569Y
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- signal processor
- electronic light
- light modulator
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Abstract
The utility model discloses a sine wave envelop electronic dimmer which comprises a signal processor, a phase testing circuit and an output filter circuit, as well as chopper power switches Q1 and Q2 which are controlled by the signal processor, and an afterflow circuit which consists of chopper power switches Q3, Q4, D1 and D2, wherein, after being connected with the afterflow circuit in series, the chopper power switches Q1 and Q2 are connected with both ends of the power supply. The output filter circuit is connected with the two ends of the afterflow circuit in parallel, and the phase testing circuit is connected between the power supply and the signal processor; in addition, the utility model also comprises a current testing circuit, the input end of which is connected between the chopper power switches Q1 and Q2, and the output end of the current testing circuit is connected with the signal processor. The utility model has the advantages that the dimmer can be accessed with the loads with different types.
Description
Technical field
The utility model relates to electronic light modulator, is specifically related to a kind of sinusoidal wave envelope electronic light modulator.
Background technology
The mode of electronic dimming switch roughly has following several at present:
(1), carries out the forward position with bidirectional triode thyristor and trigger phase modulation;
(2), carry out the back along triggering phase modulation with metal-oxide-semiconductor or IGBT pipe;
(3), carry out pressure regulation with autotransformer or ring-shaped transformer;
More than first, second kind dimming mode, all can not carry out light modulation, especially present pandemic electricity-saving lamp or fluorescent lamp to all loads.Its main cause is that phase modulation formula light modulation equipment is difficult to output and reaches the voltage that capacitive load requires, thereby causes in the light modulation process electricity-saving lamp or fluorescent lamp work is undesired or damage.And the third since adopt be that Industrial Frequency Transformer efficient is low, volume big and heavy, and be difficult for realizing high power factor and miniaturization.
The utility model content
The purpose of this utility model is, overcomes deficiency of the prior art, and a kind of sinusoidal wave envelope electronic light modulator that inserts dissimilar loads is provided.
The purpose of this utility model is achieved by following technical proposals: construct a kind of sinusoidal wave envelope electronic light modulator, comprise signal processor, phase detecting circuit, output filter circuit, and the copped wave power switch Q1 that is subjected to signal processor control, Q2 and freewheeling circuit, described copped wave power switch Q1, Q2 and the two ends that are connected on power supply after freewheeling circuit is connected in series, described output filter circuit is attempted by the freewheeling circuit two ends, described phase detecting circuit is connected between power supply and the signal processor, comprises that also input is connected copped wave power switch Q1, output connects the current detection circuit of signal processor between the Q2.
Described current detection circuit comprises resistance R 1, the R2 that is serially connected between copped wave power switch Q1, the Q2, resistance R 1, R2 middle ground, and resistance R 1, R2 two termination current detection circuits, current detection circuit connects signal processor.
The copped wave power switch Q1 of institute, Q2 are connected with signal processor by drive circuit respectively with freewheeling circuit.
Described copped wave power switch Q1, Q2 are MOS or IGBT pipe.
Described freewheeling circuit manages Q3, Q4 by MOS or IGBT and diode D1, D2 form, and the negative electrode of diode D1 connects the Q3 anode, and the anode of diode D1 connects the Q3 negative electrode, and the negative electrode of diode D2 connects the Q4 negative electrode, and the anode of diode D2 connects the Q4 anode.
Output filter circuit is made up of inductance L F1, capacitor C F.
The utlity model has following advantage: detect by the electric current of current detection circuit to circuit, detected signal is input to signal processor, signal processor to each cycle detection to signal can adjust after analyzing to the duty ratio in each cycle, and the method for cycle-by-cycle current limiting produces adjustable voltage in addition, reaching the purpose of circuit light modulation, thereby can insert dissimilar loads.
Description of drawings
Fig. 1 is the basic circuit schematic diagram of the sinusoidal wave envelope electronic light modulator of the utility model;
Fig. 2 is circuit input voltage waveform figure;
Fig. 3 is a high-frequency PWM ripple signal graph;
Fig. 4 is an inductance L F1 input oscillogram;
Fig. 5 is the sine voltage oscillogram of exporting after LF1, CF filtering;
Fig. 6 is the sinusoidal wave envelope electronic light modulator of a utility model three-wire system winding diagram;
Fig. 7 is the sinusoidal wave envelope electronic light modulator of a utility model four-wire system winding diagram
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
With reference to Fig. 1. after this circuit energized, after signal processor receives control signal 13, just input AC is carried out phase-detection by phase detecting circuit at once, when civil power enters positive half cycle (L〉N), signal processor is given in pulse of phase detecting circuit output, signal processor is exported two paths of signals simultaneously, one the tunnel is that high-frequency PWM ripple signal 5 is to drive circuit 1, by drive circuit 1 output 7 grids, the positive half cycle of power supply is carried out copped wave again by control to power MOS pipe Q1 to metal-oxide-semiconductor Q1.Another road output afterflow signal 4 is to drive circuit 2, and again by the grid of drive circuit 2 outputs 12 to IGBT pipe Q4, IGBT manages that Q4 is in conducting state always and is the circuit afterflow by diode D1 between the power supply positive half period.
Loop during the conducting of the positive half cycle high-frequency PWM of power supply: internal body diodes-inductance L F1-load and the capacitor C F-power supply input N IN of power supply input L IN-MOS pipe Q1-MOS pipe Q2;
Continuous current circuit when the positive half cycle high-frequency PWM of power supply ends: inductance L F1-load and capacitor C F-IGBT pipe Q4-diode D1.
When civil power entered negative half period (N〉L), signal processor turn-offed high-frequency PWM ripple signal 5 and the afterflow signal 4 of keeping positive half cycle work immediately.Export two paths of signals simultaneously, the one tunnel is that high-frequency PWM ripple signal 6 arrives drive circuit 1, by drive circuit 1 output 8 grids to metal-oxide-semiconductor Q2, by the control to power MOS pipe Q2 the positive half cycle of power supply is carried out copped wave again.Another road output afterflow signal 3 is to drive circuit 2, again by the grid of drive circuit 2 outputs 11 to IGBT pipe Q3, power-between the half period IGBT manage that Q3 is in conducting state always and be the circuit afterflow by diode D2.
Loop during the conducting of power-half cycle high-frequency PWM: internal body diodes-power supply input L IN of power supply input N IN-load and capacitor C F-inductance L F1-MOS pipe Q2-MOS pipe Q1;
Continuous current circuit when power-half cycle high-frequency PWM ends: load and capacitor C F-inductance L F1-IGBT manages Q3-diode D2.
Fig. 2 to Fig. 5 is the circuit working oscillogram.
For avoiding supply voltage constantly to raise with positive half cycle or negative half period curve, LF1 is owing to have little time by the freewheeling circuit afterflow, make the electric current that flows through the load two ends increase and cause LF1 to enter the magnetic saturation state, then can cause main circuit copped wave power MOS pipe Q1, Q2, freewheeling circuit IGBT manages Q3, Q4, with diode D1, D2, inductance L F1 heating or damage, current detection circuit can detect the electric current of circuit, detected signal is input to signal processor, signal processor to each cycle detection to signal can adjust after analyzing to the duty ratio in each cycle, both signal processor turn-offed high-frequency PWM ripple signal when electric circuit inspection arrives over-current phenomenon avoidance, repeated said process when the high-frequency PWM ripple signal of next cycle arrives.With adjustable duty ratio of fixed cycle, and the method for cycle-by-cycle current limiting produces adjustable voltage in addition, to reach the purpose of circuit light modulation.
Testing circuit by R1, R2 to detecting by inductive current, and by signal processor to each cycle detection to signal carry out the rate of rise and time constant analysis, situation of change by inductive current is judged the situation of load, makes control by signal processor at the situation of load.
Dimmer can also carry out the minimum voltage restriction according to loading condition, method for limiting has automatically and manual two kinds, when adopting automated manner: judge the situation of load by the situation of change of inductive current, (MCU) makes restriction at the situation of load by signal processor; In the time of manually: by limiting by key assignments.
For adapting to different installation environments, the mode of connection of the utility model circuit has following two kinds;
With reference to Fig. 6, three-wire system: promptly " N " line and load circuit are shared;
With reference to Fig. 7, four-wire system: promptly two advance the scene 2 input and output separately.
Claims (6)
1. sinusoidal wave envelope electronic light modulator, it is characterized in that, comprise signal processor, phase detecting circuit, output filter circuit, and the copped wave power switch Q1 that is subjected to signal processor control, Q2 and by Q3, Q4, D1, the freewheeling circuit that D2 forms, described copped wave power switch Q1, Q2 and the two ends that are connected on power supply after freewheeling circuit is connected in series, described output filter circuit is attempted by the freewheeling circuit two ends, described phase detecting circuit is connected between power supply and the signal processor, comprises that also input is connected copped wave power switch Q1, output connects the current detection circuit of signal processor between the Q2.
2. sinusoidal wave envelope electronic light modulator according to claim 1, it is characterized in that, described current detection circuit comprises resistance R 1, the R2 that is serially connected between copped wave power switch Q1, the Q2, resistance R 1, R2 middle ground, resistance R 1, R2 two termination current detection circuits, current detection circuit connects signal processor.
3. sinusoidal wave envelope electronic light modulator according to claim 1 is characterized in that, the copped wave power switch Q1 of institute, Q2 are connected with signal processor by drive circuit respectively with freewheeling circuit.
4. according to claim 1 to 3 any described sinusoidal wave envelope electronic light modulator, it is characterized in that described copped wave power switch Q1, Q2 are MOS or IGBT pipe.
5. sinusoidal wave envelope electronic light modulator according to claim 1, it is characterized in that, described freewheeling circuit manages Q3, Q4 by MOS or IGBT and diode D1, D2 form, the negative electrode of diode D1 connects the Q3 anode, the anode of diode D1 connects the Q3 negative electrode, the negative electrode of diode D2 connects the Q4 negative electrode, and the anode of diode D2 connects the Q4 anode.
6. sinusoidal wave envelope electronic light modulator according to claim 1 is characterized in that output filter circuit is made up of inductance L F1, capacitor C F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201465571U CN201039569Y (en) | 2007-05-07 | 2007-05-07 | Sine wave packing electronic light adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201465571U CN201039569Y (en) | 2007-05-07 | 2007-05-07 | Sine wave packing electronic light adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201039569Y true CN201039569Y (en) | 2008-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201465571U Expired - Fee Related CN201039569Y (en) | 2007-05-07 | 2007-05-07 | Sine wave packing electronic light adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201039569Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102458014A (en) * | 2010-10-28 | 2012-05-16 | 英飞特电子（杭州）有限公司 | Light source control method, device and system |
| CN106959533A (en) * | 2017-04-24 | 2017-07-18 | 苏州工业职业技术学院 | A kind of drive device of dimming glass |
-
2007
- 2007-05-07 CN CNU2007201465571U patent/CN201039569Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102458014A (en) * | 2010-10-28 | 2012-05-16 | 英飞特电子（杭州）有限公司 | Light source control method, device and system |
| CN102458014B (en) * | 2010-10-28 | 2014-08-20 | 英飞特电子（杭州）股份有限公司 | Light source control method, device and system |
| CN106959533A (en) * | 2017-04-24 | 2017-07-18 | 苏州工业职业技术学院 | A kind of drive device of dimming glass |
| CN106959533B (en) * | 2017-04-24 | 2019-10-01 | 苏州工业职业技术学院 | A kind of driving device of dimming glass |
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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: 20080319 |