CN106061034A - LED street lamp capable of following intensity changes of ambient light - Google Patents
LED street lamp capable of following intensity changes of ambient light Download PDFInfo
- Publication number
- CN106061034A CN106061034A CN201610573058.4A CN201610573058A CN106061034A CN 106061034 A CN106061034 A CN 106061034A CN 201610573058 A CN201610573058 A CN 201610573058A CN 106061034 A CN106061034 A CN 106061034A
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- China
- Prior art keywords
- street lamp
- resistance
- led
- positive pole
- connection circuit
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention provides an LED street lamp capable of following intensity changes of ambient light, which is characterized by comprising a 12 V DC power supply, an ambient light intensity detection circuit, a detection signal composite amplifying circuit, and an LED power driving circuit. According to the LED street lamp capable of following intensity changes of the ambient light, a photosensitive mode is adopted for control, the original integrated control is converted into decentralized control for the street lamps. When the ambient light is weak or dark, a light-change street lamp is automatically lightened, and the brightness is automatically adjusted. According to the light intensity conditions of the road environment, for example, in the case of cloudy rainy days or fog and haze days or fog days and other environmental factors, the street lamp is automatically turned on, and simultaneously, the brightness of the street lamp is automatically adjusted. In addition, the power consumption of the street lamp is reduced, the service life of the light-change street lamp is prolonged, the maintenance cost is reduced, the lamp replacement rate is reduced, and an intelligent control mode is provided for lamps in municipal roads.
Description
Technical field
The invention belongs to electronic technology and lighting technical field, be the LED about the change of a kind of tracking environmental light intensity
Street lamp.
Background technology
Town road street lamp has arrived the time of regulation, and whole city is opened simultaneously or simultaneously closes off, for some section because being subject to
Building or the impact of shade tree, need to open in advance street lamp, and some section or square ambient light are relatively more abundant, thus can be slow
Any opens street lamp, and conventional road lamp does not have selective work characteristics, and its mode of operation is street lamp or all light, or
Entirely go out, have no option.
The LED street lamp of tracking environmental light intensity of the present invention change takes photosensitive mode to control, and street lamp was by originally
Whole centralized Control, be changed into dispersion and each control.When the illumination of ambient light is more weak or at dark, darkening street lamp will be certainly
Moving and light, brightness simultaneously can be automatically adjusted.It can be according to the light intensity situation of road environment, such as: run into overcast and rainy or haze
My god, or when playing the environmental factorss such as greasy weather, this street lamp can automatically open up, and the most automatically adjusts the brightness of street lamp.Additionally, it helps
In reducing the power consumption of street lamp, extending the effects such as the service life of darkening street lamp, minimizing maintenance cost, reduction light fixture turnover rate,
This street lamp is that town road street lamp provides a kind of intelligentized control method pattern simultaneously.
The LED street lamp of tracking environmental light intensity of the present invention change has that circuit is simple, working stability, performance can
Leaning on, circuit only uses a small amount of common discrete component, and cost of manufacture only needs tens yuan, is suitable for factory's batch exploitation.
The LED street lamp of tracking environmental light intensity of the present invention described further below change is involved in implementation process
And necessity, guardian technique content.
Summary of the invention
Goal of the invention and beneficial effect: the LED street lamp of tracking environmental light intensity of the present invention change is taked photosensitive
Mode controls, and street lamp, by original whole centralized Control, is changed into dispersion and each controls.When the illumination of ambient light is more weak or sky
Time black, darkening street lamp will be lighted automatically, and brightness simultaneously can be automatically adjusted.It can according to the light intensity situation of road environment,
As: run into overcast and rainy or haze sky, or when playing the environmental factorss such as greasy weather, this street lamp can automatically open up, automatically adjust road simultaneously
The brightness of lamp.Additionally, it contributes to reducing the power consumption of street lamp, extending the service life of darkening street lamp, minimizing maintenance cost, fall
Low light fixture turnover rates etc. act on, and this street lamp is that town road street lamp provides a kind of intelligentized control method pattern simultaneously.
The LED street lamp of tracking environmental light intensity of the present invention change has that circuit is simple, working stability, performance can
Leaning on, circuit only uses a small amount of common discrete component, and cost of manufacture only needs tens yuan, is suitable for factory's batch exploitation.
Circuit operation principle: the LED street lamp of tracking environmental light intensity change is by 1 NPN type triode VT1 and 1 PNP
Type audion VT2 forms composite amplifier, and its luminous sensitivity is regulated by linear potentiometer RP.In NPN type triode VT1
Indirect 1 photoconductive resistance RG of base stage and circuit ground GND, makeup ring environmental light power testing circuit, become for light intensity
Change detection automatically.The high and low level that it is exported by the colelctor electrode of PNP type triode VT2 is by load resistance R2, current-limiting resistance R3
Whether control the conducting of enhancement mode N-channel field effect transistor VT3, make highlighted white LED 1～LED16 light or
Extinguish.
Time by day, owing to ambient light is brighter, when photoconductive resistance RG light is irradiated, its resistance is less, makes NPN type three pole
The base voltage of pipe VT1 is constant at relatively electronegative potential, so compound being put by what NPN type triode VT1, PNP type triode VT2 formed
Big circuit quits work, and now NPN type triode VT1, PNP type triode VT2 and enhancement mode N-channel field effect transistor VT3 are all cut
Only, highlighted white LED 1～LED16 is made not work without electricity.
When ambient light is dark or to night, photoconductive resistance RG makes resistance increase because of unglazed irradiation, loses NPN
The control ability of type audion VT1 base stage.So, the compound amplification being made up of NPN type triode VT1, PNP type triode VT2
Circuit is started working, and the colelctor electrode in PNP type triode VT2 exports between high period, by enhancement mode N-channel field effect transistor VT3
Drive highlighted white LED 1～LED16 luminous.During the colelctor electrode output low level of PNP type triode VT2,
Because of the cut-off of enhancement mode N-channel field effect transistor VT3, highlighted white LED 1～LED16 extinguishes without electricity.
In the case of ambient light difference, the resistance of photoconductive resistance RG changes therewith, enhancement mode N-channel field effect transistor
VT3 show as conducting or half on or off consecutive variations the most therewith, the conduction amount of enhancement mode N-channel field effect transistor VT3 also with
Change, thus cause the luminosity of bright white light-emitting diode LED1～LED12 also to follow synchronization to change.
Technical characteristic: the LED street lamp of tracking environmental light intensity change, it includes that 12V DC source, ambient light are strong and weak
Testing circuit, detection signal composite amplifier, LED power drive circuit, it is characterised in that:
Ambient light power testing circuit: it is made up of linear potentiometer RP, resistance R1 and photoconductive resistance RG, NPN type three
One end of the base stage connecting resistance R1 of pole pipe VT1 and one end of photoconductive resistance RG, the other end of resistance R1 connects linear potentiometer RP's
One end, the other end of linear potentiometer RP and movable end connection circuit positive pole VCC thereof, the other end connection circuit ground of photoconductive resistance RG
GND；
Detection signal composite amplifier: it is made up of NPN type triode VT1, PNP type triode VT2 and resistance R2,
The colelctor electrode of NPN type triode VT1 connects the base stage of PNP type triode VT2, the emitter stage connection circuit ground of NPN type triode VT1
GND, the emitter stage connection circuit positive pole VCC of PNP type triode VT2, the colelctor electrode of PNP type triode VT2 connects electricity by resistance R2
Ground, road GND；
LED power drive circuit: it is by resistance R3, enhancement mode N-channel field effect transistor VT3 and highlighted white light-emitting diode
LED1～LED16 forms, and the colelctor electrode of PNP type triode VT2 connects the grid of enhancement mode N-channel field effect transistor VT3 by resistance R3
Pole, the source electrode connection circuit ground GND of enhancement mode N-channel field effect transistor VT3, the drain electrode of enhancement mode N-channel field effect transistor VT3 connects highlighted
The negative pole of white light-emitting diode LED4, the negative pole of highlighted white LED 8, highlighted white LED 12
Negative pole and the negative pole of highlighted white LED 16, highlighted white LED 1～LED4 mutually contacts, high
Brilliant white LED 5～LED8 mutually contacts, highlighted white LED 9～LED12 is mutually contacted, highlighted
White light-emitting diode LED13～LED16 mutually contacts, the positive pole, highlighted white luminous of highlighted white LED 1
The positive pole of diode (LED) 5, the positive pole of highlighted white LED 9 and the positive pole of highlighted white LED 13
Connection circuit positive pole VCC；
The positive pole connection circuit positive pole VCC of 12V DC source, the negative pole connection circuit ground GND of 12V DC source.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit work of one embodiment of LED street lamp of the tracking environmental light intensity change that the present invention provides
Schematic diagram.
Detailed description of the invention
The LED street lamp circuit fundamental diagram changed according to the tracking environmental light intensity shown in accompanying drawing 1 and accompanying drawing explanation,
And according to annexation between components and parts in each several part circuit described in summary of the invention, and the components and parts described in embodiment
Technical parameter requires and circuit production main points carry out enforcement and can realize the present invention, is correlated with the present invention below in conjunction with embodiment
Technology is further described.
The technical parameter of components and parts and selection requirement thereof
RG is photoconductive resistance, and the technical parameter of photoconductive resistance is light resistance≤6K Ω, dark resistance >=1M Ω；
VT1 is NPN type triode, and the model of selection is 2SC9013 or 3DG12, it is desirable to β >=100；VT2 is positive-negative-positive three pole
Pipe, the model of selection is 2SC9015 or 3DG21, it is desirable to β >=100；
VT3 is enhancement mode N-channel field effect transistor, and the model of selection is IRFZ30；
RP is linear potentiometer, and the resistance of use is 220K Ω；
The resistance of resistance R1 is 18K Ω；Resistance R2 resistance is 62K Ω；Resistance R3 resistance is 330K Ω；
LED1～LED16 is highlighted white light-emitting diode, selects white luminous two poles of diameter ￠ 8 high-power and high-luminance
Pipe；
DC is 12V DC source, it is recommended to use output services electric current >=3A, 12V D.C. regulated power supply.
Circuit production main points and circuit debugging
Tracking environmental light intensity change LED street lamp shell select appropriately sized plastic housing, on housing face-plate with
The corresponding position of sensitive surface of photoconductive resistance RG reserves photographic hole, in order to make ambient light testing circuit normally work, but photosensitive
Hole necessarily can not be disturbed and misoperation by the light of LED street lamp voluntarily；
When circuit debugging, first cover the sensitive surface of photoconductive resistance RG by one piece of paperboard, in order to simulate night and half-light
Environment.Now, composite amplifier should be started working, and is driven highlighted white luminous two by enhancement mode N-channel field effect transistor VT3
Pole pipe LED1～LED16 electrified light emitting；
Then, the paperboard on occlusion removal photoconductive resistance RG, now, composite amplifier should quit work, because strengthening
Type N-channel field effect transistor VT3 is ended, and highlighted white LED 1～LED16 extinguishes because of dead electricity, and ambient light is described
Testing circuit is working properly, and whole circuit can normally use；
Enhancement mode N-channel field effect transistor VT3 in the on-state, the source electrode of enhancement mode N-channel field effect transistor VT3 and drain electrode
Between pressure drop the least, its pressure drop is the most negligible, thus drive power the biggest；If feeling highlighted white light-emitting diode luminance not
Enough, can the connected mode of light emitting diode on accompanying drawing 1 circuit fundamental diagram to specifications, suitably increase highlighted white and send out
The quantity of optical diode.
The circuit components layout of the present invention, circuit structure design, its shape of outward appearance and size thereof etc. are the most no
It is the key technology of the present invention, is not claimed technology contents, because not affecting specific implementation process of the present invention,
Therefore illustrate the most one by one.
Claims (1)
1. a LED street lamp for tracking environmental light intensity change, it includes 12V DC source, ambient light power detection electricity
Road, detection signal composite amplifier, LED power drive circuit, it is characterised in that:
Described ambient light power testing circuit is made up of linear potentiometer RP, resistance R1 and photoconductive resistance RG, NPN type three pole
One end of the base stage connecting resistance R1 of pipe VT1 and one end of photoconductive resistance RG, the other end of resistance R1 meets the one of linear potentiometer RP
End, the other end of linear potentiometer RP and movable end connection circuit positive pole VCC thereof, the other end connection circuit ground GND of photoconductive resistance RG；
Described detection signal composite amplifier is made up of NPN type triode VT1, PNP type triode VT2 and resistance R2, NPN
The colelctor electrode of type audion VT1 connects the base stage of PNP type triode VT2, the emitter stage connection circuit ground GND of NPN type triode VT1,
The emitter stage connection circuit positive pole VCC of PNP type triode VT2, the colelctor electrode of PNP type triode VT2 is by resistance R2 connection circuit ground
GND；
Described LED power drive circuit is by resistance R3, enhancement mode N-channel field effect transistor VT3 and highlighted white light-emitting diode
LED1～LED16 forms, and the colelctor electrode of PNP type triode VT2 connects the grid of enhancement mode N-channel field effect transistor VT3 by resistance R3
Pole, the source electrode connection circuit ground GND of enhancement mode N-channel field effect transistor VT3, the drain electrode of enhancement mode N-channel field effect transistor VT3 connects highlighted
The negative pole of white light-emitting diode LED4, the negative pole of highlighted white LED 8, highlighted white LED 12
Negative pole and the negative pole of highlighted white LED 16, highlighted white LED 1～LED4 mutually contacts, high
Brilliant white LED 5～LED8 mutually contacts, highlighted white LED 9～LED12 is mutually contacted, highlighted
White light-emitting diode LED13～LED16 mutually contacts, the positive pole, highlighted white luminous of highlighted white LED 1
The positive pole of diode (LED) 5, the positive pole of highlighted white LED 9 and the positive pole of highlighted white LED 13
Connection circuit positive pole VCC；
The positive pole connection circuit positive pole VCC of described 12V DC source, the negative pole connection circuit ground GND of 12V DC source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610573058.4A CN106061034A (en) | 2016-07-18 | 2016-07-18 | LED street lamp capable of following intensity changes of ambient light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610573058.4A CN106061034A (en) | 2016-07-18 | 2016-07-18 | LED street lamp capable of following intensity changes of ambient light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106061034A true CN106061034A (en) | 2016-10-26 |
Family
ID=57188441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610573058.4A Pending CN106061034A (en) | 2016-07-18 | 2016-07-18 | LED street lamp capable of following intensity changes of ambient light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106061034A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172001A (en) * | 2018-02-18 | 2018-06-15 | 周云侠 | Become LED traffic signal lamp according to ambient light |
| CN111853641A (en) * | 2020-08-05 | 2020-10-30 | 启奥光电科技(扬州)有限公司 | LED street lamp with adjustable illumination range |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105101582A (en) * | 2015-09-17 | 2015-11-25 | 黄月华 | Light-controlled light-emitting diode (LED) night lamp |
| CN204968185U (en) * | 2015-09-17 | 2016-01-13 | 黄月华 | Little night -light of light -operated LED |
-
2016
- 2016-07-18 CN CN201610573058.4A patent/CN106061034A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105101582A (en) * | 2015-09-17 | 2015-11-25 | 黄月华 | Light-controlled light-emitting diode (LED) night lamp |
| CN204968185U (en) * | 2015-09-17 | 2016-01-13 | 黄月华 | Little night -light of light -operated LED |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172001A (en) * | 2018-02-18 | 2018-06-15 | 周云侠 | Become LED traffic signal lamp according to ambient light |
| CN111853641A (en) * | 2020-08-05 | 2020-10-30 | 启奥光电科技(扬州)有限公司 | LED street lamp with adjustable illumination range |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161026 |
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| WD01 | Invention patent application deemed withdrawn after publication |