CN103079310B - Dimming control circuit for spotlight - Google Patents
Dimming control circuit for spotlight Download PDFInfo
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- CN103079310B CN103079310B CN201210575983.2A CN201210575983A CN103079310B CN 103079310 B CN103079310 B CN 103079310B CN 201210575983 A CN201210575983 A CN 201210575983A CN 103079310 B CN103079310 B CN 103079310B
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Abstract
The invention discloses a dimming control circuit for a spotlight, comprising a detection circuit, a singlechip microcomputer, a dimming circuit and a power supply circuit. The power supply circuit is used for supplying power to the singlechip microcomputer and the dimming circuit, the power supply circuit comprises a solar cell panel and a storage battery, and the solar cell panel charges the storage battery. The detection circuit is used for detecting the output voltage of the solar cell panel and switching on or off the dimming circuit according to the output voltage. The singlechip microcomputer is used for controlling the dimming circuit to regulate the brightness and flicker frequency of a first LED (light emitting diode) light source when the dimming circuit is switched on by the detection circuit. According to the dimming control circuit for the spotlight, the detection circuit detects the output voltage of the solar cell panel to judge that the environment is a light environment or a dark environment, and the detection circuit is enabled not to actuate mistakenly and not to be interfered. The singlechip microcomputer is adopted to control the dimming circuit, so that the purpose of regulating the flicker frequency and brightness of the first LED light source are realized, and the spotlight has multiple lighting modes. Besides, no adjusting resistors are used for dimming, and electric energy is saved.
Description
Technical field
The present invention relates to field of light fittings, particularly relate to a kind of spotlight light modulation control circuit.
Background technology
Traditional shot-light has light control functionality, adopts photo resistance perception ambient lighting in the control circuit of shot-light, to close shot-light or light shot-light under bright environment in dark surrounds.But photo resistance is comparatively responsive to illumination, is easily disturbed, easily close or overdue bright shot-light by mistake.In addition, the adjustment of the brightness of traditional shot-light is typically employed in the control circuit of shot-light and connects adjustable resistance to realize, adjustable resistance can cause waste of energy, improve the energy consumption of shot-light, and, adopt adjustable resistance only can realize the adjustment of shot-light brightness, the lamp light mode of attainable shot-light is comparatively single, is unfavorable for the popularization in market.
Summary of the invention
Based on this, be necessary easily to be disturbed for traditional shot-light control circuit, energy consumption be comparatively large and can realize the comparatively single problem of lamp light mode, provide a kind of and be not easily interfered, energy consumption is less and attainable lamp light mode is more spotlight light modulation control circuit.
A kind of spotlight light modulation control circuit, comprises testing circuit, single-chip microcomputer, light adjusting circuit and power supply circuits,
Described power supply circuits are used for powering for described single-chip microcomputer and described light adjusting circuit, and described power supply circuits comprise solar panel and storage battery, and described solar panel is described charge in batteries;
Described testing circuit is for detecting the output voltage of described solar panel and opening according to described output voltage or turn off described light adjusting circuit;
Described single-chip microcomputer is used for controlling brightness and the flicker frequency that described light adjusting circuit regulates the first LED light source when described testing circuit opens described light adjusting circuit.
Wherein in an embodiment, described power supply circuits also comprise the first diode, the positive pole of described first diode is connected with the positive pole of described solar panel, the negative pole of described first diode connects the positive pole of described storage battery, the negative pole of described solar panel and the negative pole of described storage battery ground connection respectively
Described testing circuit comprises the first resistance, the second resistance and the first triode, the positive pole of solar panel described in one termination of described first resistance, the other end connects one end of described second resistance and the base stage of described first triode respectively, the other end of described second resistance and the emitter of described first triode ground connection respectively;
Described light adjusting circuit comprises the second diode, second triode, 3rd resistance, 4th resistance and the first metal-oxide-semiconductor, the collector electrode of described first triode connects the negative pole of described second diode respectively, the collector electrode of described second triode and one end of described 3rd resistance, the positive pole of described second diode and the base stage of described second triode connect one end of described 4th resistance respectively, the other end of described 4th resistance is connected with described single-chip microcomputer, the grounded emitter of described second triode, the grid of the first metal-oxide-semiconductor described in another termination of described 3rd resistance, the source ground of described first metal-oxide-semiconductor, the drain electrode of described first metal-oxide-semiconductor connects the positive pole of described storage battery by described first LED light source.
Wherein in an embodiment, also comprise illumination control circuit, described illumination control circuit comprises the 5th resistance, the 6th resistance, the 3rd triode and the second metal-oxide-semiconductor, and described testing circuit also comprises the 7th resistance, the 8th resistance and the 4th triode,
The positive pole of solar panel described in one termination of described 7th resistance, the other end connects one end of described 8th resistance and the base stage of described 4th triode respectively, the other end of described 8th resistance and the emitter of described 4th triode ground connection respectively, the collector electrode of described 4th triode connects one end of described 5th resistance respectively, one end of described 6th resistance and the collector electrode of described 3rd triode, the positive pole of storage battery described in another termination of described 5th resistance, the grid of the second metal-oxide-semiconductor described in another termination of described 6th resistance, the grounded emitter of described 3rd triode, the base stage of described 3rd triode is connected with described single-chip microcomputer, the source ground of described second metal-oxide-semiconductor, the drain electrode of described second metal-oxide-semiconductor connects the positive pole of described storage battery by the second LED light source.
Wherein in an embodiment, also comprise signal receiving circuit, described signal receiving circuit is for receiving remote controller output signal and described output signal being sent to described single-chip microcomputer.
Above-mentioned spotlight light modulation control circuit, the output voltage being detected solar panel by testing circuit judges photoenvironment or dark surrounds, due to solar panel be subject to short time illumination be produce voltage faint, can not make testing circuit produce misoperation, can not be interfered.Adopt Single-chip Controlling light adjusting circuit, the object of adjustment first LED light source ED1 flicker frequency and brightness can be reached, shot-light can be made to have multiple lamp light mode.In addition, without the need to using adjustable resistance light modulation, electric energy has been saved.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of the spotlight light modulation control circuit of an embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, in one embodiment, a kind of spotlight light modulation control circuit, comprises testing circuit 110, single-chip microcomputer 120, light adjusting circuit 130 and power supply circuits 140.Power supply circuits 140 are for powering for single-chip microcomputer 120 and light adjusting circuit 130, and power supply circuits 140 comprise solar panel SR and storage battery BT, and solar panel SR is that storage battery BT charges.Testing circuit 110 is for detecting the output voltage of solar panel SR and opening according to this output voltage or turn off light adjusting circuit 130.Single-chip microcomputer 120 is for controlling brightness and the flicker frequency that light adjusting circuit 130 regulates the first LED light source ED1 when testing circuit 110 opens light adjusting circuit 130.The model of single-chip microcomputer 120 is PIC12F629.
In the particular embodiment, power supply circuits 140 also comprise the first diode D1, the positive pole of the first diode D1 is connected with the positive pole of solar panel SR, and the negative pole of the first diode D1 connects the positive pole of storage battery BT, the negative pole of solar panel SR and the negative pole of storage battery BT ground connection respectively.Under photoenvironment, transform light energy is become electric energy by solar panel SR, the positive pole output voltage of solar panel SR is charged by the first diode D1 accumulators BT, until when the output voltage of storage battery BT is more than or equal to the output voltage of solar panel SR, solar panel SR stops charging to storage battery BT.When intensity of illumination weakens, the output voltage of solar panel SR is less, and the first diode D1 can prevent storage battery BT to the reversed charge of solar panel SR.
Testing circuit 110 comprises the first resistance R1, the second resistance R2 and the first triode Q1, the positive pole of the one termination solar panel SR of the first resistance R1, the other end connects one end of the second resistance R2 and the base stage of the first triode Q1 respectively, the other end of the second resistance R2 and the emitter of the first triode Q1 ground connection respectively.Under photoenvironment, the positive pole of solar panel SR exports positive voltage, and is delivered to the base stage of the first triode through the first resistance R1.Along with the increase of intensity of illumination, the value of the positive voltage that the positive pole of solar panel SR exports along with increase, when increase to be equal to or greater than the first voltage threshold time, the first triode Q1 conducting, the grounded collector of the first triode.The size of the first voltage threshold can be adjusted by the resistance adjusting the first resistance RI and/or the second resistance R2.Otherwise under dark surrounds, the magnitude of voltage of solar panel SR Non voltage output or output is less than the first voltage threshold, and the first triode Q1 is in off state.First triode Q1 is NPN pipe.
Light adjusting circuit 130 comprises the second diode D2, the second triode Q2, the 3rd resistance R3, the 4th resistance R4 and the first metal-oxide-semiconductor M1, the collector electrode of the first triode Q1 connects one end of the negative pole of the second diode D2, the collector electrode of the second triode Q2 and the 3rd resistance R3 respectively, the positive pole of the second diode D2 and the base stage of the second triode Q2 connect one end of the 4th resistance R4 respectively, the other end of the 4th resistance R4 is connected with single-chip microcomputer 120, and in the present embodiment, the other end of the 4th resistance R4 is connected with the pin 5 of single-chip microcomputer 120.The grounded emitter of the second triode Q2, the grid of another termination first metal-oxide-semiconductor M1 of the 3rd resistance R3, the source ground of the first metal-oxide-semiconductor M1, the drain electrode of the first metal-oxide-semiconductor M1 connects the positive pole of storage battery BT by the first LED light source.First metal-oxide-semiconductor is N slot field-effect transistor.Under photoenvironment, the grounded collector of the first triode Q1, therefore, the grid of the first metal-oxide-semiconductor is low level, and the first metal-oxide-semiconductor is in off state, and no matter single-chip microcomputer 120 exports high level or low level, the grid of the first metal-oxide-semiconductor is always low level, therefore, light adjusting circuit 130 is now in off state, cannot carry out light modulation.Under dark surrounds, first triode Q1 is in off state, single-chip microcomputer 120 exports PWM(Pulse WidthModulation, pulse width modulating signal) signal, can be adjusted the brightness of the first LED light source by adjustment pwm signal duty ratio, the duty ratio of pwm signal is larger, and the brightness of the first LED light source ED1 is higher, otherwise the brightness of the first LED light source ED1 is lower.The flicker frequency of the first LED light source ED1 can be adjusted by the frequency adjusting pwm signal, make the first LED light source ED1 have multiple lamp light mode.Wherein, the second triode Q2 is PNP pipe.
In the particular embodiment, spotlight light modulation control circuit also comprises illumination control circuit 150.Illumination control circuit 150, for lighting or close the second LED light source ED2, makes the second LED light source ED2 be in normal bright state or normally off.Illumination control circuit 150 comprises the 5th resistance R5, the 6th resistance R6, the 3rd triode Q3 and the second metal-oxide-semiconductor M2, and testing circuit 110 also comprises the 7th resistance R7, the 8th resistance R8 and the 4th triode Q4.The positive pole of the one termination solar panel SR of the 7th resistance R7, the other end connects one end of the 8th resistance R8 and the base stage of the 4th triode Q4 respectively, the other end of the 8th resistance R8 and the emitter of the 4th triode Q4 ground connection respectively, the collector electrode of the 4th triode Q4 connects one end of the 5th resistance R5 respectively, one end of 6th resistance R6 and the collector electrode of the 3rd triode Q3, the positive pole of another termination storage battery BT of the 5th resistance R5, the grid of another termination second metal-oxide-semiconductor M2 of the 6th resistance R6, the grounded emitter of the 3rd triode Q3, the base stage of the 3rd triode Q3 is connected with single-chip microcomputer 120, in the present embodiment, the base stage of the 3rd triode Q3 is connected with the pin 6 of single-chip microcomputer 120.The source ground of the second metal-oxide-semiconductor M2, the drain electrode of the second metal-oxide-semiconductor M2 connects the positive pole of storage battery BT by another LED light source.In photoenvironment, the positive pole of solar panel SR exports positive voltage, when the value of the positive voltage exported is greater than the second voltage threshold, 4th triode Q4 conducting, the grounded collector of the 4th triode Q4, the therefore grounded-grid of the second metal-oxide-semiconductor, second metal-oxide-semiconductor M2 is in off state, second LED light source ED2 is in OFF state, and no matter the pin 6 of single-chip microcomputer 120 exports the flat or low level of high point, all cannot light the second LED light source ED2.The value of the second voltage threshold can be adjusted by the resistance adjusting the 7th resistance R7 and/or the 8th resistance R8.Otherwise, under dark surrounds, the voltage of solar panel SR Non voltage output or output is less than the second voltage threshold, 4th triode Q4 turns off, now, if when the pin 6 of single-chip microcomputer 120 exports high level, 3rd triode Q3 conducting, the grounded collector of the 3rd triode Q3, the second metal-oxide-semiconductor M2 is in off state, and the second LED light source ED2 extinguishes; If pin 6 output low level of book single-chip microcomputer, the 3rd triode Q3 turns off, and the grid of the second metal-oxide-semiconductor M2 connects the positive pole of storage battery BT by the 5th resistance R5, and the grid of the second metal-oxide-semiconductor M2 is high level, and the second metal-oxide-semiconductor M2 conducting, the second LED light source ED2 is lit.
In the particular embodiment, spotlight light modulation control circuit also comprises signal receiving circuit 160.Signal receiving circuit 160 is for receiving remote controller output signal and this output signal being sent to single-chip microcomputer 120.Signal receiving circuit 160 comprises the second electric capacity C2, the 3rd electric capacity C3 and receiving circuit P.One end of second electric capacity C2, one end of the 3rd electric capacity C3 and the pin Vcc of receiving circuit P connect one end of the 9th resistance R9 respectively, the positive pole of another termination storage battery BT of the 9th resistance R9.The other end of the second electric capacity C2 and the other end of the 3rd electric capacity C3 ground connection respectively.Two pin data of receiving circuit P all connect the pin 4 of single-chip microcomputer 120, the pin GND ground connection of receiving circuit P.One end that 9th resistance R9 is connected with the second electric capacity C2 is also connected the positive pole of the negative pole of voltage stabilizing didoe D3, the pin 1 of single-chip microcomputer 120 and two indicator lights ED3, ED4 respectively, the positive pole of voltage stabilizing didoe D3 and the pin 8 of single-chip microcomputer 120 ground connection respectively.The negative pole of two indicator lights ED3, ED4 connects pin 2, the pin 3 of single-chip microcomputer 120 respectively by the tenth resistance R10 and the 11 resistance R11.Between the pin 1 and pin 8 of single-chip microcomputer 120, be also connected in series the first electric capacity C1, the pin 7 of single-chip microcomputer 120 is unsettled, does not define.
But photo resistance is comparatively responsive to illumination, is easily disturbed, easily close or overdue bright shot-light by mistake.In addition, the adjustment of the brightness of traditional shot-light is typically employed in the control circuit of shot-light and connects adjustable resistance to realize, adjustable resistance can cause waste of energy, improve the energy consumption of shot-light, and, adopt adjustable resistance only can realize the adjustment of shot-light brightness, the lamp light mode of attainable shot-light is comparatively single, is unfavorable for the popularization in market.
Above-mentioned spotlight light modulation control circuit, the output voltage being detected solar panel SR by testing circuit 110 judges photoenvironment or dark surrounds, that the voltage that produces is faint and be less than the first voltage threshold because solar panel SR is subject to short time illumination, testing circuit 110 can not be made to produce misoperation, can not be interfered.Adopt single-chip microcomputer 120 output pwm signal to control light adjusting circuit 130, by regulating frequency and the duty ratio of pwm signal, the object of adjustment first LED light source ED1 flicker frequency and brightness can be reached, shot-light can be made to have multiple lamp light mode.In addition, without the need to using adjustable resistance light modulation, electric energy has been saved.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (3)
1. a spotlight light modulation control circuit, is characterized in that, comprises testing circuit, single-chip microcomputer, light adjusting circuit and power supply circuits,
Described power supply circuits are used for powering for described single-chip microcomputer and described light adjusting circuit, described power supply circuits comprise solar panel, storage battery and the first diode, the positive pole of described first diode is connected with the positive pole of described solar panel, the negative pole of described first diode connects the positive pole of described storage battery, the negative pole of described solar panel and the negative pole of described storage battery ground connection respectively, described solar panel is described charge in batteries;
Described testing circuit is for detecting the output voltage of described solar panel and opening according to described output voltage or turn off described light adjusting circuit; Described testing circuit comprises the first resistance, the second resistance and the first triode, the positive pole of solar panel described in one termination of described first resistance, the other end connects one end of described second resistance and the base stage of described first triode respectively, the other end of described second resistance and the emitter of described first triode ground connection respectively;
Described single-chip microcomputer is used for controlling brightness and the flicker frequency that described light adjusting circuit regulates the first LED light source when described testing circuit opens described light adjusting circuit, described light adjusting circuit comprises the second diode, second triode, 3rd resistance, 4th resistance and the first metal-oxide-semiconductor, the collector electrode of described first triode connects the negative pole of described second diode respectively, the collector electrode of described second triode and one end of described 3rd resistance, the positive pole of described second diode and the base stage of described second triode connect one end of described 4th resistance respectively, the other end of described 4th resistance is connected with described single-chip microcomputer, the grounded emitter of described second triode, the grid of the first metal-oxide-semiconductor described in another termination of described 3rd resistance, the source ground of described first metal-oxide-semiconductor, the drain electrode of described first metal-oxide-semiconductor connects the positive pole of described storage battery by described first LED light source.
2. spotlight light modulation control circuit according to claim 1, it is characterized in that, also comprise illumination control circuit, described illumination control circuit comprises the 5th resistance, the 6th resistance, the 3rd triode and the second metal-oxide-semiconductor, described testing circuit also comprises the 7th resistance, the 8th resistance and the 4th triode
The positive pole of solar panel described in one termination of described 7th resistance, the other end connects one end of described 8th resistance and the base stage of described 4th triode respectively, the other end of described 8th resistance and the emitter of described 4th triode ground connection respectively, the collector electrode of described 4th triode connects one end of described 5th resistance respectively, one end of described 6th resistance and the collector electrode of described 3rd triode, the positive pole of storage battery described in another termination of described 5th resistance, the grid of the second metal-oxide-semiconductor described in another termination of described 6th resistance, the grounded emitter of described 3rd triode, the base stage of described 3rd triode is connected with described single-chip microcomputer, the source ground of described second metal-oxide-semiconductor, the drain electrode of described second metal-oxide-semiconductor connects the positive pole of described storage battery by the second LED light source.
3. spotlight light modulation control circuit according to claim 1, is characterized in that, also comprise signal receiving circuit, and described signal receiving circuit is for receiving remote controller output signal and described output signal being sent to described single-chip microcomputer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210575983.2A CN103079310B (en) | 2012-12-26 | 2012-12-26 | Dimming control circuit for spotlight |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575983.2A CN103079310B (en) | 2012-12-26 | 2012-12-26 | Dimming control circuit for spotlight |
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| CN103079310A CN103079310A (en) | 2013-05-01 |
| CN103079310B true CN103079310B (en) | 2015-02-04 |
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| CN201210575983.2A Active CN103079310B (en) | 2012-12-26 | 2012-12-26 | Dimming control circuit for spotlight |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522123A (en) * | 2016-11-01 | 2017-03-22 | 上海亚明照明有限公司 | Solar energy road cone |
| CN109539044A (en) * | 2018-12-20 | 2019-03-29 | 武汉钟码科技有限公司 | Household intelligent LED shot-light and its light modulation platform |
| CN109673083B (en) * | 2018-12-27 | 2022-04-05 | 赛特威尔电子股份有限公司 | Night disturbance-free control method and circuit and smoke alarm |
| CN110798934A (en) * | 2019-11-08 | 2020-02-14 | 湖南烁光照明工程有限公司 | Centralized power supply brightening system |
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| CN1738506A (en) * | 2005-04-19 | 2006-02-22 | 杨青山 | Novel lighting method and device |
| CN201491324U (en) * | 2009-03-05 | 2010-05-26 | 张文龙 | Controlling device for adjusting light of solar LED lamp |
| CN201557307U (en) * | 2009-11-20 | 2010-08-18 | 四川新力光源有限公司 | solar controller |
| CN202026508U (en) * | 2011-04-08 | 2011-11-02 | 杭州佑国光电科技有限公司 | Solar energy controller |
| CN203027555U (en) * | 2012-12-26 | 2013-06-26 | 浙江明烁电子科技有限公司 | Lighting adjustment control circuit of spotlight |
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2012
- 2012-12-26 CN CN201210575983.2A patent/CN103079310B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1738506A (en) * | 2005-04-19 | 2006-02-22 | 杨青山 | Novel lighting method and device |
| CN201491324U (en) * | 2009-03-05 | 2010-05-26 | 张文龙 | Controlling device for adjusting light of solar LED lamp |
| CN201557307U (en) * | 2009-11-20 | 2010-08-18 | 四川新力光源有限公司 | solar controller |
| CN202026508U (en) * | 2011-04-08 | 2011-11-02 | 杭州佑国光电科技有限公司 | Solar energy controller |
| CN203027555U (en) * | 2012-12-26 | 2013-06-26 | 浙江明烁电子科技有限公司 | Lighting adjustment control circuit of spotlight |
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| CN103079310A (en) | 2013-05-01 |
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