CN103079310A - Dimming control circuit for spotlight - Google Patents
Dimming control circuit for spotlight Download PDFInfo
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- CN103079310A CN103079310A CN2012105759832A CN201210575983A CN103079310A CN 103079310 A CN103079310 A CN 103079310A CN 2012105759832 A CN2012105759832 A CN 2012105759832A CN 201210575983 A CN201210575983 A CN 201210575983A CN 103079310 A CN103079310 A CN 103079310A
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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, easily is disturbed, and easily mistake is closed or overdue bright shot-light.In addition, the adjustment of the brightness of traditional shot-light usually employing connection adjustable resistance in the control circuit of shot-light realizes, adjustable resistance can cause waste of energy, improved 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 for traditional shot-light control circuit easily be disturbed, energy consumption is large and can realize the problem that lamp light mode is comparatively single, the spotlight light modulation control circuit that provide a kind of and be difficult for being interfered, energy consumption is less and attainable lamp light mode is more.
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 to described single-chip microcomputer and the power supply of 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 light adjusting circuit is opened or turn-offed to described testing circuit for detection of the output voltage of described solar panel and according to described output voltage;
Described single-chip microcomputer is used for controlling brightness and the flicker frequency that described light adjusting circuit is regulated the first led light source when described testing circuit is opened described light adjusting circuit.
Therein among embodiment, described power supply circuits also comprise the first diode, the positive pole of described the first diode links to each other with the positive pole of described solar panel, the negative pole of described the 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 be ground connection respectively
Described testing circuit comprises the first resistance, the second resistance and the first triode, the positive pole of the described solar panel of one termination of described the first resistance, the other end connects respectively the base stage of an end and described first triode of described the second resistance, and the emitter of the other end of described the second resistance and described the first triode is ground connection respectively;
Described light adjusting circuit comprises the second diode, the second triode, the 3rd resistance, the 4th resistance and the first metal-oxide-semiconductor, the collector electrode of described the first triode connects respectively the negative pole of described the second diode, one end of the collector electrode of described the second triode and described the 3rd resistance, the base stage of the positive pole of described the second diode and described the second triode connects respectively an end of described the 4th resistance, the other end of described the 4th resistance links to each other with described single-chip microcomputer, the grounded emitter of described the second triode, the grid of described first metal-oxide-semiconductor of another termination of described the 3rd resistance, the source ground of described the first metal-oxide-semiconductor, the drain electrode of described the first metal-oxide-semiconductor connect the positive pole of described storage battery by described the first led light source.
Among embodiment, also comprise illumination control circuit therein, 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 the described solar panel of one termination of described the 7th resistance, the other end connects respectively the base stage of an end and described the 4th triode of described the 8th resistance, the emitter of the other end of described the 8th resistance and described the 4th triode is ground connection respectively, the collector electrode of described the 4th triode connects respectively an end of described the 5th resistance, one end of described the 6th resistance and the collector electrode of described the 3rd triode, the positive pole of the described storage battery of another termination of described the 5th resistance, the grid of described second metal-oxide-semiconductor of another termination of described the 6th resistance, the grounded emitter of described the 3rd triode, the base stage of described the 3rd triode links to each other with described single-chip microcomputer, the source ground of described the second metal-oxide-semiconductor, the drain electrode of described the second metal-oxide-semiconductor connect the positive pole of described storage battery by the second led light source.
Among embodiment, also comprise signal receiving circuit therein, described signal receiving circuit is used for receiving the remote controller output signal and described output signal is sent to described single-chip microcomputer.
Above-mentioned spotlight light modulation control circuit, detect the output voltage of solar panel by testing circuit and judge photoenvironment or dark surrounds, because it is that the voltage that produces is faint that solar panel is subject to short time illumination, can not make testing circuit produce misoperation, can not be interfered.Adopt the Single-chip Controlling light adjusting circuit, can reach the purpose of regulating the first led light source ED1 flicker frequency and brightness, can make shot-light have a plurality of lamp light modes.In addition, need not to use the adjustable resistance light modulation, saved electric energy.
Description of drawings
Fig. 1 is the electrical schematic diagram of the spotlight light modulation control circuit of an embodiment.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
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 used to single-chip microcomputer 120 and light adjusting circuit 130 power supplies, and power supply circuits 140 comprise solar panel SR and storage battery BT, and solar panel SR is storage battery BT charging.Light adjusting circuit 130 is opened or turn-offed to testing circuit 110 for detection of the output voltage of solar panel SR and according to this output voltage.Single-chip microcomputer 120 is used for brightness and the flicker frequency that control light adjusting circuit 130 is regulated the first led light source ED1 when testing circuit 110 is opened light adjusting circuit 130.The model of single-chip microcomputer 120 is PIC12F629.
In specific embodiment, power supply circuits 140 also comprise the first diode D1, the positive pole of the first diode D1 links to each other 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, and the negative pole of the negative pole of solar panel SR and storage battery BT is ground connection respectively.Under photoenvironment, solar panel SR becomes electric energy with transform light energy, the anodal output voltage of solar panel SR is by the first diode D1 accumulators BT charging, until the output voltage of storage battery BT is during more than or equal to the output voltage of solar panel SR, solar panel SR stops storage battery BT is charged.When intensity of illumination weakened, the output voltage of solar panel SR was less, and the first diode D1 can prevent that storage battery BT is to the reversed charge of solar panel SR.
Light adjusting circuit 130 comprises the second diode D2, the second triode Q2, the 3rd resistance R 3, the 4th resistance R 4 and the first metal-oxide-semiconductor M1, the collector electrode of the first triode Q1 connects respectively the negative pole of the second diode D2, the collector electrode of the second triode Q2 and an end of the 3rd resistance R 3, the base stage of the positive pole of the second diode D2 and the second triode Q2 connects respectively an end of the 4th resistance R 4, the other end of the 4th resistance R 4 links to each other with single-chip microcomputer 120, and the other end of the 4th resistance R 4 links to each other with the pin 5 of single-chip microcomputer 120 in the present embodiment.The grounded emitter of the second triode Q2, the grid of another termination first metal-oxide-semiconductor M1 of the 3rd resistance R 3, 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.The first metal-oxide-semiconductor is the 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 is exported high level or low levels, the grid of the first metal-oxide-semiconductor is always low level, therefore, the light adjusting circuit 130 of this moment is in off state, can't carry out light modulation.Under dark surrounds, the first triode Q1 is in off state, single-chip microcomputer 120 output PWM(Pulse WidthModulation, pulse width modulating signal) signal, can adjust the brightness of the first led light source by adjusting the 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.Can adjust the flicker frequency of the first led light source ED1 by the frequency of adjusting pwm signal, make the first led light source ED1 have a plurality of lamp light modes.Wherein, the second triode Q2 is the PNP pipe.
In specific embodiment, the spotlight light modulation control circuit also comprises illumination control circuit 150.Illumination control circuit 150 is used 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 R 5, the 6th resistance R 6, the 3rd triode Q3 and the second metal-oxide-semiconductor M2, and testing circuit 110 also comprises the 7th resistance R 7, the 8th resistance R 8 and the 4th triode Q4.The positive pole of one termination solar panel SR of the 7th resistance R 7, the other end connects respectively the base stage of an end and the 4th triode Q4 of the 8th resistance R 8, the emitter of the other end of the 8th resistance R 8 and the 4th triode Q4 is ground connection respectively, the collector electrode of the 4th triode Q4 connects respectively an end of the 5th resistance R 5, one end of the 6th resistance R 6 and the collector electrode of the 3rd triode Q3, the positive pole of another termination storage battery BT of the 5th resistance R 5, the grid of another termination second metal-oxide-semiconductor M2 of the 6th resistance R 6, the grounded emitter of the 3rd triode Q3, the base stage of the 3rd triode Q3 links to each other with single-chip microcomputer 120, in the present embodiment, the base stage of the 3rd triode Q3 links to each other 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 connect the positive pole of storage battery BT by another led light source.In photoenvironment, the positive pole output positive voltage of solar panel SR, in the value of positive voltage of output during greater than the second voltage threshold value, the 4th triode Q4 conducting, the grounded collector of the 4th triode Q4, the therefore grounded-grid of the second metal-oxide-semiconductor, the second metal-oxide-semiconductor M2 is in off state, the second led light source ED2 is in and extinguishes state, and no matter flat the or low level of the high point of pin 6 outputs of single-chip microcomputer 120 all can't be lighted the second led light source ED2.Can adjust the value of second voltage threshold value by the resistance of adjusting the 7th resistance R 7 and/or the 8th resistance R 8.Otherwise, under dark surrounds, the voltage of solar panel SR Non voltage output or output is less than the second voltage threshold value, the 4th triode Q4 turn-offs, at this moment, if when the pin of single-chip microcomputer 120 6 is exported high level, the 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 levels of book single-chip microcomputer, the 3rd triode Q3 turn-offs, and the grid of the second metal-oxide-semiconductor M2 connects the positive pole of storage battery BT by the 5th resistance R 5, and the grid of the second metal-oxide-semiconductor M2 is high level, the second metal-oxide-semiconductor M2 conducting, and the second led light source ED2 is lit.
In specific embodiment, the spotlight light modulation control circuit also comprises signal receiving circuit 160.Signal receiving circuit 160 is used for receiving the remote controller output signal and this output signal being sent to single-chip microcomputer 120.Signal receiving circuit 160 comprises the second capacitor C 2, the 3rd capacitor C 3 and receiving circuit P.One end of one end of the second capacitor C 2, the 3rd capacitor C 3 and the pin Vcc of receiving circuit P connect respectively an end of the 9th resistance R 9, the positive pole of another termination storage battery BT of the 9th resistance R 9.The other end of the other end of the second capacitor C 2 and the 3rd capacitor C 3 is 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.The 9th resistance R 9 also is connected respectively the negative pole of voltage stabilizing didoe D3, the pin 1 of single-chip microcomputer 120 and the positive pole of two indicator light ED3, ED4 with the end that the second capacitor C 2 links to each other, and the pin 8 of the positive pole of voltage stabilizing didoe D3 and single-chip microcomputer 120 is ground connection respectively.The negative pole of two indicator light ED3, ED4 connects respectively pin 2, the pin 3 of single-chip microcomputer 120 by the tenth resistance R 10 and the 11 resistance R 11.Also be connected in series the first capacitor C 1 between the pin 1 of single-chip microcomputer 120 and pin 8, the pin 7 of single-chip microcomputer 120 is unsettled, does not do definition.
But photo resistance is comparatively responsive to illumination, easily is disturbed, and easily mistake is closed or overdue bright shot-light.In addition, the adjustment of the brightness of traditional shot-light usually employing connection adjustable resistance in the control circuit of shot-light realizes, adjustable resistance can cause waste of energy, improved 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, judge photoenvironment or dark surrounds by the output voltage that testing circuit 110 detects solar panel SR, because it is that the voltage that produces is faint and less than the first voltage threshold that solar panel SR is subject to short time illumination, can not make testing circuit 110 produce misoperation, can not be interfered.Adopt single-chip microcomputer 120 output pwm signals control light adjusting circuit 130, by regulating frequency and the duty ratio of pwm signal, can reach the purpose of regulating the first led light source ED1 flicker frequency and brightness, can make shot-light have a plurality of lamp light modes.In addition, need not to use the adjustable resistance light modulation, saved electric energy.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.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 (4)
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 to described single-chip microcomputer and the power supply of 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 light adjusting circuit is opened or turn-offed to described testing circuit for detection of the output voltage of described solar panel and according to described output voltage;
Described single-chip microcomputer is used for controlling brightness and the flicker frequency that described light adjusting circuit is regulated the first led light source when described testing circuit is opened described light adjusting circuit.
2. spotlight light modulation control circuit according to claim 1, it is characterized in that, described power supply circuits also comprise the first diode, the positive pole of described the first diode links to each other with the positive pole of described solar panel, the negative pole of described the 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 be ground connection respectively
Described testing circuit comprises the first resistance, the second resistance and the first triode, the positive pole of the described solar panel of one termination of described the first resistance, the other end connects respectively the base stage of an end and described first triode of described the second resistance, and the emitter of the other end of described the second resistance and described the first triode is ground connection respectively;
Described light adjusting circuit comprises the second diode, the second triode, the 3rd resistance, the 4th resistance and the first metal-oxide-semiconductor, the collector electrode of described the first triode connects respectively the negative pole of described the second diode, one end of the collector electrode of described the second triode and described the 3rd resistance, the base stage of the positive pole of described the second diode and described the second triode connects respectively an end of described the 4th resistance, the other end of described the 4th resistance links to each other with described single-chip microcomputer, the grounded emitter of described the second triode, the grid of described first metal-oxide-semiconductor of another termination of described the 3rd resistance, the source ground of described the first metal-oxide-semiconductor, the drain electrode of described the first metal-oxide-semiconductor connect the positive pole of described storage battery by described the first led light source.
3. 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 the described solar panel of one termination of described the 7th resistance, the other end connects respectively the base stage of an end and described the 4th triode of described the 8th resistance, the emitter of the other end of described the 8th resistance and described the 4th triode is ground connection respectively, the collector electrode of described the 4th triode connects respectively an end of described the 5th resistance, one end of described the 6th resistance and the collector electrode of described the 3rd triode, the positive pole of the described storage battery of another termination of described the 5th resistance, the grid of described second metal-oxide-semiconductor of another termination of described the 6th resistance, the grounded emitter of described the 3rd triode, the base stage of described the 3rd triode links to each other with described single-chip microcomputer, the source ground of described the second metal-oxide-semiconductor, the drain electrode of described the second metal-oxide-semiconductor connect the positive pole of described storage battery by the second led light source.
4. spotlight light modulation control circuit according to claim 1 is characterized in that, also comprises signal receiving circuit, and described signal receiving circuit is used for receiving the remote controller output signal and described output signal is sent to described single-chip microcomputer.
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CN201210575983.2A CN103079310B (en) | 2012-12-26 | 2012-12-26 | Dimming control circuit for spotlight |
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CN201210575983.2A CN103079310B (en) | 2012-12-26 | 2012-12-26 | Dimming control circuit for spotlight |
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CN103079310B CN103079310B (en) | 2015-02-04 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
CN109673083A (en) * | 2018-12-27 | 2019-04-23 | 赛特威尔电子股份有限公司 | A kind of night non-disturbance control method, 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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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
CN109673083A (en) * | 2018-12-27 | 2019-04-23 | 赛特威尔电子股份有限公司 | A kind of night non-disturbance control method, circuit and smoke alarm |
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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