CN104427686A - Lamp and control circuit thereof - Google Patents
Lamp and control circuit thereof Download PDFInfo
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- CN104427686A CN104427686A CN201310373068.XA CN201310373068A CN104427686A CN 104427686 A CN104427686 A CN 104427686A CN 201310373068 A CN201310373068 A CN 201310373068A CN 104427686 A CN104427686 A CN 104427686A
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- switch
- resistance
- controller
- control circuit
- light source
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Abstract
The invention provides a control circuit and is applied to a lamp to control the brightness of a light source unit in the lamp. The control circuit is characterized in that the control circuit includes a controller, a first light adjusting switch, a second light adjusting switch and a switch control unit, wherein the first light adjusting switch and the second light adjusting switch are connected with the controller, and the switch control unit is connected between the controller and the light source unit; when the first light adjusting switch is switched off, the controller outputs first PWM signals to the switch control unit so as to make the switch control unit control the light source unit to emit light with first brightness; and when the second light adjusting switch is switched off, the controller outputs second PWM signals to the switch control unit so as to make the switch control unit control the light source unit to emit light with second brightness. With the control circuit of the invention adopted, brightness control on the light source unit can be realized. The invention also provides a lamp.
Description
Technical field
The present invention relates to lighting field, particularly relate to a kind of light fixture and control circuit thereof.
Background technology
At present, be all adopt the control mode namely opened and namely close at the light source of the light fixture of indoor, various place.Namely when the light source switch of described light fixture closes, the light source of described light fixture is luminous immediately, and described light source is luminous with its high-high brightness.When the light source switch of described light fixture disconnects, the light source of described light fixture stops luminescence immediately.Therefore when the light source switch of described light fixture opens and closes, user needs to adjust self and sharply changes to adapt to ambient light the impact produced its vision.
Summary of the invention
The object of the present invention is to provide a kind of light fixture and control circuit thereof, to control the brightness of the light source cell in light fixture, thus self adapt to ambient light without the need to user and sharply change by adjusting the impact that its vision is produced.
In order to solve the problems of the technologies described above, the invention provides a kind of control circuit, be applied in light fixture to control the brightness of the light source cell in light fixture, described control circuit comprises controller, first dimmer switch, second dimmer switch and switch control unit, first and second dimmer switch described is connected to described controller, described switch control unit is connected between described controller and described light source cell, when described first dimmer switch closes, described controller exports the first pwm signal to described switch control unit, described light source cell is controlled with the first Intensity LEDs to make described switch control unit, when described second dimmer switch closes, described controller exports the second pwm signal to described switch control unit, described light source cell is controlled with the second Intensity LEDs to make described switch control unit.
Wherein, described first dimmer switch is connected to the first pin of described controller, described second dimmer switch is connected to the second pin of described controller, described switch control unit comprises the first triode, second switch pipe, first resistance, second resistance, 3rd resistance and the 4th resistance, first and second resistance described is connected to the 3rd of described controller the between pin and ground, described 3rd and the 4th resistance is connected to the 4th of described controller the between pin and ground, the control end of described first triode is connected to the node between first and second resistance described, the first end of described first switching tube receives direct voltage, second end of described first switching tube is connected to described light source cell, the control end of described second triode is connected to the node between the described 3rd and the 4th resistance, the first end of described second switch pipe receives described direct voltage, second end of described second switch pipe is connected to described light source cell, when described first dimmer switch closes, 3rd pin of described controller exports the control end of described first pwm signal to described first switching tube, to make described light source cell with the first Intensity LEDs, when described second dimmer switch closes, 4th pin of described controller exports the control end of described second pwm signal to described second switch pipe, to make described light source cell with the second Intensity LEDs.
Wherein, described control circuit also comprises the 5th resistance and the 6th resistance, the first end of described first dimmer switch is connected to the first pin of described controller by described 5th resistance, second end ground connection of described first dimmer switch, the first end of described second dimmer switch is connected to the second pin of described controller, the second end ground connection of described second dimmer switch by described 6th resistance.
Wherein, described control circuit also comprises power supply unit, and described power supply unit is used for providing described direct voltage for the first end of first and second switching tube described.
Wherein, described power supply unit comprises battery and pressurizer, the positive pole of described battery is connected to the input of described pressurizer, the minus earth of described battery, the earth terminal ground connection of described pressurizer, the output of described pressurizer is connected to the first end of first and second switching tube described, to provide stable described direct voltage to the first end of first and second switching tube described.
Wherein, described power supply unit also comprises the first electric capacity and the second electric capacity, between the input that described first electric capacity is connected to described pressurizer and ground, between the output that described second electric capacity is connected to described pressurizer and ground.
Wherein, described control circuit also comprises alarm unit, 5th pin of described controller is connected to the positive pole of described battery, to detect the electricity of described battery, described alarm unit is connected to the 6th pin of described controller, when the electricity that described controller detects described battery is lower than default electricity, described controller controls described alarm unit and reports to the police.
Wherein, described alarm unit comprises the 7th resistance, the 8th resistance, the 3rd switching tube and alarm, described 7th and the 8th resistant series is connected to the 6th of described controller the between pin and ground, the control end of described 3rd switching tube is connected on the node between the described 7th and the 8th resistance, the first end of described 3rd switching tube is connected to the output of described pressurizer, second end of described 3rd switching tube is connected to the power end of described alarm, the earth terminal ground connection of described alarm.
Wherein, the described first to the 3rd switching tube is NPN type switching tube, and the control end of the described first to the 3rd switching tube, first end and the second end are respectively base stage, collector electrode and emitter.
The present invention also provides a kind of light fixture, and comprise light source cell and be connected to the above-mentioned control circuit of described light source cell, above-mentioned control circuit controls the brightness of described light source cell.
Light fixture of the present invention comprises described control circuit, described control circuit is used for controlling the brightness of described light source cell, described control circuit comprises controller, first dimmer switch, second dimmer switch and switch control unit, first and second dimmer switch described is connected to described controller, described switch control unit is connected between described controller and described light source cell, when described first dimmer switch closes, described controller exports the first pwm signal to described switch control unit, described light source cell is controlled with the first Intensity LEDs to make described switch control unit, when described second dimmer switch closes, described controller exports the second pwm signal to described switch control unit, described light source cell is controlled with the second Intensity LEDs to make described switch control unit.Present invention achieves and achieve brilliance control to described light source cell by described control circuit.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in execution mode below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the block diagram of the first better embodiment of light fixture of the present invention;
Fig. 2 is the circuit diagram of Fig. 1;
Fig. 3 is the block diagram of the second better embodiment of light fixture of the present invention;
Fig. 4 is the circuit diagram of Fig. 3.
Embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.
Refer to Fig. 1, the invention provides a kind of light fixture 100.Described light fixture 100 comprises light source cell 40 and is connected to the control circuit 20 of described light source cell 40.Described control circuit 20 is for controlling the brightness of the light source cell 40 in described light fixture 100.
Described control circuit 20 comprises controller 21, first dimmer switch 22, second dimmer switch 23 and switch control unit 24.First and second dimmer switch 22 and 23 described is connected to described controller 21.Described switch control unit 24 is connected between described controller 21 and described light source cell 40.When described first dimmer switch 22 closes, described controller 21 exports the first pwm signal to described switch control unit 24, controls described light source cell 40 with the first Intensity LEDs to make described switch control unit 24.When described second dimmer switch 23 closes, described controller 21 exports the second pwm signal to described switch control unit 24, controls described light source cell 40 with the second Intensity LEDs to make described switch control unit 24.
Please continue to refer to Fig. 2, particularly, described controller 21 comprises the first pin, the second pin, the 3rd pin and the 4th pin.Described first dimmer switch 22 is connected to the first pin of described controller 21.Described second dimmer switch 23 is connected to the second pin of described controller 21.Described switch control unit 24 comprises the first triode Q1, second switch pipe Q2, the first resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4.Described first and second resistance R1 and R2 is connected to the 3rd of described controller 21 the between pin and ground.Described 3rd and the 4th resistance R3 and R4 is connected to the 4th of described controller 21 the between pin and ground.The control end of described first triode Q1 is connected to the node between described first and second resistance R1 and R2.The first end of described first switching tube Q1 receives direct voltage.Second end of described first switching tube Q1 is connected to described light source cell 40.The control end of described second triode Q2 is connected to the node between the described 3rd and the 4th resistance R3 and R4.The first end of described second switch pipe Q2 receives described direct voltage.Second end of described second switch pipe Q2 is connected to described light source cell 40.When described first dimmer switch 22 closes, the 3rd pin of described controller 21 exports the control end of described first pwm signal to described first switching tube Q1, to make described light source cell 40 with the first Intensity LEDs.When described second dimmer switch 23 closes, the 4th pin of described controller 21 exports the control end of described second pwm signal to described second switch pipe Q2, to make described light source cell 40 with the second Intensity LEDs.
Further, described control circuit 20 also comprises the 5th resistance R5 and the 6th resistance R6.The first end of described first dimmer switch 22 is connected to the first pin of described controller 21 by described 5th resistance R5.Second end ground connection of described first dimmer switch 22.The first end of described second dimmer switch 23 is connected to the second pin of described controller 21 by described 6th resistance R6.Second end ground connection of described second dimmer switch 23.
Described light source cell 40 comprises the first light-emitting diode D1 and the second light-emitting diode D2.The anode of described first light-emitting diode D1 is connected to second end of described first switching tube Q1.The minus earth of described first light-emitting diode D1.The anode of described second light-emitting diode D2 is connected to second end of described second triode Q2.The minus earth of described second light-emitting diode D2.
Please continue to refer to Fig. 3 and Fig. 4, the present invention second better embodiment provides a kind of light fixture.The light fixture that described second better embodiment provides is similar to the light fixture 100 that described second better embodiment provides, and both differences are: in the second better embodiment, and described control circuit also comprises power supply unit 25.Described power supply unit 25 is for providing described direct voltage for the first end of described first and second switching tube Q1 and Q2.
Described power supply unit 25 comprises battery B and pressurizer Z.The positive pole of described battery B is connected to the input of described pressurizer Z.The minus earth of described battery B.The earth terminal ground connection of described pressurizer Z.The output of described pressurizer Z is connected to the first end of described first and second switching tube Q1 and Q2, to provide stable described direct voltage to the first end of described first and second switching tube Q1 and Q2.
Further, described power supply unit 2 also comprises the first electric capacity C1 and the second electric capacity C2.Between the input that described first electric capacity C1 is connected to described pressurizer Z and ground.Between the output that described second electric capacity C2 is connected to described pressurizer Z and ground.
Described control circuit also comprises alarm unit 26.Described controller 21 also comprises the 5th pin and the 6th pin.5th pin of described controller 21 is connected to the positive pole of described battery B, to detect the electricity of described battery B.Described alarm unit 26 is connected to the 6th pin of described controller 21.When the electricity that described controller 21 detects described battery B is lower than default electricity, described controller 21 controls described alarm unit 26 and reports to the police.
Particularly, described alarm unit 26 comprises the 7th resistance R7, the 8th resistance R8, the 3rd switching tube Q3 and alarm Y.Described 7th and the 8th resistance R7 and R8 is connected to the 6th of described controller 21 the between pin and ground.The control end of described 3rd switching tube Q3 is connected on the node between the described 7th and the 8th resistance R7 and R8.The first end of described 3rd switching tube Q3 is connected to the output of described pressurizer Z.Second end of described 3rd switching tube Q3 is connected to the power end of described alarm Y.The earth terminal ground connection of described alarm Y.
In the above-described embodiment, the described first to the 3rd switching tube Q1-Q3 is NPN type triode.The control end of the described first to the 3rd switching tube Q1-Q3, first end and the second end are respectively the base stage of NPN type triode, collector electrode and emitter.In other embodiments, the described first to the 3rd switching tube Q1-Q3 also can change as required.
Light fixture 100 of the present invention comprises described control circuit 20.Described control circuit 20 comprises controller 21, first dimmer switch 22, second dimmer switch 23 and switch control unit 24.First and second dimmer switch 22 and 23 described is connected to described controller 21.Described switch control unit 24 is connected between described controller 21 and described light source cell 40.When described first dimmer switch 22 closes, described controller 21 exports the first pwm signal to described switch control unit 24, controls described light source cell 40 with the first Intensity LEDs to make described switch control unit 24.When described second dimmer switch 23 closes, described controller 21 exports the second pwm signal to described switch control unit 24, controls described light source cell 40 with the second Intensity LEDs to make described switch control unit 24.Light fixture 100 of the present invention achieves the brilliance control to described light source cell 40 by described control circuit 20, and namely when described first dimmer switch 22 closes, described light source cell 40 is with the first Intensity LEDs.When described second dimmer switch 23 closes, described light source cell 40 is with the second Intensity LEDs.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a control circuit, be applied in light fixture to control the brightness of the light source cell in light fixture, it is characterized in that: described control circuit comprises controller, first dimmer switch, second dimmer switch and switch control unit, first and second dimmer switch described is connected to described controller, described switch control unit is connected between described controller and described light source cell, when described first dimmer switch closes, described controller exports the first pwm signal to described switch control unit, described light source cell is controlled with the first Intensity LEDs to make described switch control unit, when described second dimmer switch closes, described controller exports the second pwm signal to described switch control unit, described light source cell is controlled with the second Intensity LEDs to make described switch control unit.
2. control circuit according to claim 1, it is characterized in that, described first dimmer switch is connected to the first pin of described controller, described second dimmer switch is connected to the second pin of described controller, described switch control unit comprises the first triode, second switch pipe, first resistance, second resistance, 3rd resistance and the 4th resistance, first and second resistance described is connected to the 3rd of described controller the between pin and ground, described 3rd and the 4th resistance is connected to the 4th of described controller the between pin and ground, the control end of described first triode is connected to the node between first and second resistance described, the first end of described first switching tube receives direct voltage, second end of described first switching tube is connected to described light source cell, the control end of described second triode is connected to the node between the described 3rd and the 4th resistance, the first end of described second switch pipe receives described direct voltage, second end of described second switch pipe is connected to described light source cell, when described first dimmer switch closes, 3rd pin of described controller exports the control end of described first pwm signal to described first switching tube, to make described light source cell with the first Intensity LEDs, when described second dimmer switch closes, 4th pin of described controller exports the control end of described second pwm signal to described second switch pipe, to make described light source cell with the second Intensity LEDs.
3. control circuit according to claim 2, it is characterized in that, described control circuit also comprises the 5th resistance and the 6th resistance, the first end of described first dimmer switch is connected to the first pin of described controller by described 5th resistance, second end ground connection of described first dimmer switch, the first end of described second dimmer switch is connected to the second pin of described controller, the second end ground connection of described second dimmer switch by described 6th resistance.
4. control circuit according to claim 2, is characterized in that, described control circuit also comprises power supply unit, and described power supply unit is used for providing described direct voltage for the first end of first and second switching tube described.
5. control circuit according to claim 4, it is characterized in that, described power supply unit comprises battery and pressurizer, the positive pole of described battery is connected to the input of described pressurizer, the minus earth of described battery, the earth terminal ground connection of described pressurizer, the output of described pressurizer is connected to the first end of first and second switching tube described, to provide stable described direct voltage to the first end of first and second switching tube described.
6. control circuit according to claim 5, it is characterized in that, described power supply unit also comprises the first electric capacity and the second electric capacity, between the input that described first electric capacity is connected to described pressurizer and ground, between the output that described second electric capacity is connected to described pressurizer and ground.
7. control circuit according to claim 5, it is characterized in that, described control circuit also comprises alarm unit, 5th pin of described controller is connected to the positive pole of described battery, to detect the electricity of described battery, described alarm unit is connected to the 6th pin of described controller, and when the electricity that described controller detects described battery is lower than default electricity, described controller controls described alarm unit and reports to the police.
8. control circuit according to claim 7, it is characterized in that, described alarm unit comprises the 7th resistance, the 8th resistance, the 3rd switching tube and alarm, described 7th and the 8th resistant series is connected to the 6th of described controller the between pin and ground, the control end of described 3rd switching tube is connected on the node between the described 7th and the 8th resistance, the first end of described 3rd switching tube is connected to the output of described pressurizer, second end of described 3rd switching tube is connected to the power end of described alarm, the earth terminal ground connection of described alarm.
9. control circuit according to claim 8, is characterized in that, the described first to the 3rd switching tube is NPN type switching tube, and the control end of the described first to the 3rd switching tube, first end and the second end are respectively base stage, collector electrode and emitter.
10. a light fixture, comprises light source cell and is connected to the control circuit as described in any one of claim 1-9 of described light source cell, to control the brightness of described light source cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310373068.XA CN104427686A (en) | 2013-08-23 | 2013-08-23 | Lamp and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310373068.XA CN104427686A (en) | 2013-08-23 | 2013-08-23 | Lamp and control circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104427686A true CN104427686A (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310373068.XA Pending CN104427686A (en) | 2013-08-23 | 2013-08-23 | Lamp and control circuit thereof |
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| CN (1) | CN104427686A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105357815A (en) * | 2015-09-16 | 2016-02-24 | 彭洲龙 | LED (light emitting diode) table lamp |
| WO2019029388A1 (en) * | 2017-08-10 | 2019-02-14 | 京东方科技集团股份有限公司 | Display device and brightness adjustment method thereof |
| CN114025448A (en) * | 2021-12-02 | 2022-02-08 | 深圳市源立信照明科技有限公司 | Flat lamp circuit and control method thereof |
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| US8305008B2 (en) * | 2010-05-19 | 2012-11-06 | Chen-Sheng Yang | Constant-current controller for LED light string |
| CN102811524A (en) * | 2011-05-31 | 2012-12-05 | 海洋王照明科技股份有限公司 | LED lamp and control circuit thereof |
| CN102811527A (en) * | 2011-05-31 | 2012-12-05 | 海洋王照明科技股份有限公司 | LED frequency-variable marker lamp and control circuit and control method of marker lamp |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8305008B2 (en) * | 2010-05-19 | 2012-11-06 | Chen-Sheng Yang | Constant-current controller for LED light string |
| CN102724785A (en) * | 2011-03-29 | 2012-10-10 | 鸿富锦精密工业（深圳）有限公司 | Control circuit |
| CN102811524A (en) * | 2011-05-31 | 2012-12-05 | 海洋王照明科技股份有限公司 | LED lamp and control circuit thereof |
| CN102811527A (en) * | 2011-05-31 | 2012-12-05 | 海洋王照明科技股份有限公司 | LED frequency-variable marker lamp and control circuit and control method of marker lamp |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105357815A (en) * | 2015-09-16 | 2016-02-24 | 彭洲龙 | LED (light emitting diode) table lamp |
| WO2019029388A1 (en) * | 2017-08-10 | 2019-02-14 | 京东方科技集团股份有限公司 | Display device and brightness adjustment method thereof |
| CN114025448A (en) * | 2021-12-02 | 2022-02-08 | 深圳市源立信照明科技有限公司 | Flat lamp circuit and control method thereof |
| CN114025448B (en) * | 2021-12-02 | 2023-10-20 | 深圳市源立信照明科技有限公司 | Flat lamp circuit and control method thereof |
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