CN104994649A - Light modulation control circuit - Google Patents
Light modulation control circuit Download PDFInfo
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- CN104994649A CN104994649A CN201510400165.2A CN201510400165A CN104994649A CN 104994649 A CN104994649 A CN 104994649A CN 201510400165 A CN201510400165 A CN 201510400165A CN 104994649 A CN104994649 A CN 104994649A
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Abstract
The invention relates to a light modulation control circuit comprising a photoelectric coupler, an inverter, a decoupling capacitor, a current-limiting resistor R4, an external thyristor, a capacitor C1, a current-limiting resistor R1, a resistor R2, and a resistor R3. The external thyristor is a bidirectional thyristor. One input terminal of the photoelectric coupler is connected with an output terminal of the inverter, the other input terminal is connected with a power supply by the current-limiting resistor R4; one output terminal is connected with an anode of the external thyristor by the current-limiting resistor R1; and the other output terminal is connected with the resistor R3 and a gate pole of the external thyristor. One end of the resistor R3 is connected with the gate pole of the external thyristor Q1 and the other end is connected with a cathode of the gate pole of the external thyristor. The resistor R2 and the capacitor C1 are connected in series between the anode and the cathode of the external thyristor Q1. One end of the decoupling capacitor is connected with the power supply and the other end is grounded. According to the invention, the light fixture power is adjusted based on the on/off time ratio of the zero-crossing trigger thyristor; and the number of times of full-wave passing of the voltage is changed instead of changing the voltage waveform, so that no pollution is caused on the power grid.
Description
Technical field
The present invention relates to lighting control technology field, particularly, relate to a kind of adjusting control circuit.
Background technology
Along with the raising of people's quality of life, light fixture has been not merely indoor base lighting instrument, and be a kind of practical artwork of building decoration, after family has light fixture miscellaneous, they are carefully arranged in pairs or groups together, reach the needs that optimal atmosphere effect is high-quality life, the main still manual form of control of current light, control all light fixtures one by one, so not only trouble but also inefficiency, do not meet the standard of modern comfortable life yet.In addition, along with the growth of people's environmental protection ideas, the demand of people is also become in time according to the daylighting situation adjustment lamp brightness in family.
Therefore, design one and can control the requirement that the intelligent lighting system of light had both met the comfortable life of people easily, there is again the advantage of low-carbon environment-friendly.Within the system, adjusting control circuit is its very important circuit.Traditional light-dimming method all adopts phase-shifting trigger thyristor, the angle of flow controlling thyristor controls power output, not only sync detection circuit is complicated, and high order harmonic component interference can be produced instantaneously at turn on thyristors, cause grid voltage waveform to distort, affect the normal work of other power consumption equipments and communication system.
Summary of the invention
Object of the present invention is just the shortcoming and defect overcoming above-mentioned prior art, provides a kind of adjusting control circuit, and this adjusting control circuit can not cause line voltage to distort.
The present invention's adopted technical scheme that solves the problem is:
A kind of adjusting control circuit, comprises photoelectrical coupler U1, inverter U2, decoupling capacitor C2, current-limiting resistance R4, outside thyristor Q1, electric capacity C1, current-limiting resistance R1, resistance R2, resistance R3; Described outside thyristor Q1 is bidirectional thyristor; Input of described photoelectrical coupler U1 connects the output of inverter U2, another input connects by current-limiting resistance R4 power Vcc, output to connect the anode of outside thyristor Q1, another output contact resistance R3 and outside thyristor Q1 simultaneously gate pole by current-limiting resistance R1; The negative electrode that described resistance R3 one end connects the gate pole of outside thyristor Q1, the other end connects outside thyristor Q1; Between the anode that described resistance R2 and electric capacity C1 is connected on outside thyristor Q1 and negative electrode; Described decoupling capacitor C2 one end connects power Vcc, other end ground connection.
As a further improvement on the present invention, described photoelectrical coupler U1 comprises light-emitting diode D1, zero cross detection circuit and inner thyristor Q2; Described inner thyristor Q2 is photosensitive bidirectional thyristor; The output that positive pole connects current-limiting resistance R4, negative pole connects inverter U2 of described light-emitting diode D1; The gate pole of described inner thyristor Q2 is connected zero cross detection circuit with negative electrode, anode connects current-limiting resistance R1.
Preferably, described photoelectrical coupler U1 adopts the photoelectrical coupler of MOC3041 model.
Preferably, the resistance of described current-limiting resistance R4 is 100 Ω, and the resistance of described current-limiting resistance R1 is 400 Ω.
Preferably, the resistance of described resistance R2 is 39 Ω, and the resistance of described resistance R3 is 330 Ω, and the capacitance of described electric capacity C1 is 0.01 μ F.
To sum up, the invention has the beneficial effects as follows: the present invention adopts the time ratios of zero cross fired turn on thyristors and shutoff to regulate the power of light fixture, do not change the waveform of voltage due to zero cross fired and only change the number of times that electrical voltage full-wave passes through, can not pollute electrical network.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, a kind of adjusting control circuit, comprises photoelectrical coupler U1, inverter U2, decoupling capacitor C2, current-limiting resistance R4, outside thyristor Q1, electric capacity C1, current-limiting resistance R1, resistance R2, resistance R3; Described outside thyristor Q1 is bidirectional thyristor; Input of described photoelectrical coupler U1 connects the output of inverter U2, another input connects by current-limiting resistance R4 power Vcc, output to connect the anode A of outside thyristor Q1, another output contact resistance R3 and outside thyristor Q1 simultaneously gate pole G by current-limiting resistance R1; The negative electrode K that described resistance R3 one end connects the gate pole G of outside thyristor Q1, the other end connects outside thyristor Q1; Between the anode A that described resistance R2 and electric capacity C1 is connected on outside thyristor Q1 and negative electrode K; Described decoupling capacitor C2 one end connects power Vcc, other end ground connection.Inverter U2 generally connects single-chip microcomputer, according to control conducting or the closedown photoelectrical coupler U1 of single-chip microcomputer.During use, between the anode A that load and light fixture are also connected to outside thyristor Q1 and negative electrode K.
Described photoelectrical coupler U1 comprises light-emitting diode D1, zero cross detection circuit and inner thyristor Q2; Described inner thyristor Q2 is photosensitive bidirectional thyristor; The output that positive pole connects current-limiting resistance R4, negative pole connects inverter U2 of described light-emitting diode D1; The gate pole G that the gate pole G of described inner thyristor Q2 is connected zero cross detection circuit with negative electrode K, anode A connects current-limiting resistance R1, negative electrode K also contact resistance R3 and outside thyristor Q1 simultaneously.In the present embodiment, zero cross detection circuit adopts zero cross detection circuit conventional in this area, repeats no more its concrete structure and principle in the present embodiment.
Described photoelectrical coupler U1 adopts the photoelectrical coupler of MOC3041 model.The resistance of described current-limiting resistance R4 is 100 Ω, and the resistance of described current-limiting resistance R1 is 400 Ω.The resistance of described resistance R2 is 39 Ω, and the resistance of described resistance R3 is 330 Ω, and the capacitance of described electric capacity C1 is 0.01 μ F.
MOC3041 inside is containing zero cross detection circuit, when the electric current of the positive pole input 15mA of light-emitting diode, the inner negative electrode of thyristor Q2 and the voltage of anode little over zero time, inner thyristor Q2 conducting, trigger external thyristor Q1 conducting, when the positive pole input current of MOC3041 light-emitting diode is 0, inner thyristor Q2 turns off, thus outside thyristor Q1 also turns off.The present invention adopts the time ratios of zero cross fired turn on thyristors and shutoff to regulate the power of light fixture, does not change the waveform of voltage and only changes the number of times that electrical voltage full-wave passes through, can not pollute electrical network due to zero cross fired.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (5)
1. an adjusting control circuit, is characterized in that, comprises photoelectrical coupler U1, inverter U2, decoupling capacitor C2, current-limiting resistance R4, outside thyristor Q1, electric capacity C1, current-limiting resistance R1, resistance R2, resistance R3; Described outside thyristor Q1 is bidirectional thyristor;
Input of described photoelectrical coupler U1 connects the output of inverter U2, another input connects by current-limiting resistance R4 power Vcc, output to connect the anode of outside thyristor Q1, another output contact resistance R3 and outside thyristor Q1 simultaneously gate pole by current-limiting resistance R1;
The negative electrode that described resistance R3 one end connects the gate pole of outside thyristor Q1, the other end connects outside thyristor Q1;
Between the anode that described resistance R2 and electric capacity C1 is connected on outside thyristor Q1 and negative electrode;
Described decoupling capacitor C2 one end connects power Vcc, other end ground connection.
2. a kind of adjusting control circuit according to claim 1, is characterized in that, described photoelectrical coupler U1 comprises light-emitting diode D1, zero cross detection circuit and inner thyristor Q2; Described inner thyristor Q2 is photosensitive bidirectional thyristor; The output that positive pole connects current-limiting resistance R4, negative pole connects inverter U2 of described light-emitting diode D1; The gate pole of described inner thyristor Q2 is connected zero cross detection circuit with negative electrode, anode connects current-limiting resistance R1.
3. a kind of adjusting control circuit according to claim 1 and 2, is characterized in that, described photoelectrical coupler U1 adopts the photoelectrical coupler of MOC3041 model.
4. a kind of adjusting control circuit according to claim 1 and 2, is characterized in that, the resistance of described current-limiting resistance R4 is 100 Ω, and the resistance of described current-limiting resistance R1 is 400 Ω.
5. a kind of adjusting control circuit according to claim 1 and 2, is characterized in that, the resistance of described resistance R2 is 39 Ω, and the resistance of described resistance R3 is 330 Ω, and the capacitance of described electric capacity C1 is 0.01 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400165.2A CN104994649A (en) | 2015-07-10 | 2015-07-10 | Light modulation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400165.2A CN104994649A (en) | 2015-07-10 | 2015-07-10 | Light modulation control circuit |
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| CN104994649A true CN104994649A (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510400165.2A Pending CN104994649A (en) | 2015-07-10 | 2015-07-10 | Light modulation control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851944A (en) * | 2017-03-23 | 2017-06-13 | 成都零智慧科技有限公司 | A kind of intelligent light-controlled system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110132828A (en) * | 2010-06-03 | 2011-12-09 | 주식회사 유니룩스 | An inrush current limit circuit for led converter |
| CN202143266U (en) * | 2011-07-12 | 2012-02-08 | 科博达技术有限公司 | Led light constant current circuit |
-
2015
- 2015-07-10 CN CN201510400165.2A patent/CN104994649A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110132828A (en) * | 2010-06-03 | 2011-12-09 | 주식회사 유니룩스 | An inrush current limit circuit for led converter |
| CN202143266U (en) * | 2011-07-12 | 2012-02-08 | 科博达技术有限公司 | Led light constant current circuit |
Non-Patent Citations (1)
| Title |
|---|
| 井冈山大学: "光传感器ISL29004在智能照明控制系统中的应用", 《中电网》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851944A (en) * | 2017-03-23 | 2017-06-13 | 成都零智慧科技有限公司 | A kind of intelligent light-controlled system |
| CN106851944B (en) * | 2017-03-23 | 2023-04-18 | 成都零一智慧科技有限公司 | Intelligent light control system |
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Application publication date: 20151021 |
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| RJ01 | Rejection of invention patent application after publication |