CN108777905A - A kind of application method of the brightness regulation lamp based on button power supply - Google Patents
A kind of application method of the brightness regulation lamp based on button power supply Download PDFInfo
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- CN108777905A CN108777905A CN201810603133.6A CN201810603133A CN108777905A CN 108777905 A CN108777905 A CN 108777905A CN 201810603133 A CN201810603133 A CN 201810603133A CN 108777905 A CN108777905 A CN 108777905A
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- resistance
- light source
- triode
- brightness
- power supply
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of application methods of the brightness regulation lamp based on button power supply, brightness regulation lamp includes button power supply, brightness detection control circuit, brightness regulating circuit, the output end of the button power supply is connected with brightness detection control circuit, and the output end of brightness detection control circuit is connected with brightness regulating circuit.The present invention is using superimposed current and the control mode for being superimposed light source, light source around brightness regulation lamp is detected, realize the brightness of the light source automatically generated, it can be realized simultaneously without expensive microcontroller or processor, cost is relatively low, and the configuration of button power supply makes the present apparatus be convenient for carrying and move, and in addition button power supply is also convenient for changing.
Description
Technical field
The present invention relates to projection field more particularly to a kind of application methods of the brightness regulation lamp based on button power supply.
Background technology
Projection lamp, also known as imaging lamp are a kind of electrical equipments that can be projected image or word on ground or wall.It throws
Shadow lamp can be imaged on any picture in a manner of light on any lighttight medium (attached on floor on such as indoor ceiling
On close wall), the existing dynamic effect of picture of projection, it is easy to which the eye for attracting common people builds warm reconciliation to interior
Gas is put forth energy, while also can be the newest design of businessman, and newest sales promotion information, newest commodity are presented to common people.Such as give exhibition and
LOGO pictures are played by promotion producer, or give each room flap valve trade mark in hotel, or to coffee shop and the Condom of bar class
It is projected out various characteristics picture on the ground or on wall, or various figures are got to advocate company to brand shop.However it is existing
The projection lamp of technology is all single brightness, the light luminance projected can not be adjusted so that drop shadow effect is not
It is good.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of brightness regulation lamps based on button power supply
Application method.
The purpose of the present invention is achieved through the following technical solutions：A kind of brightness regulation lamp based on button power supply
Application method, brightness regulation lamp include button power supply, brightness detection control circuit, brightness regulating circuit, the button power supply
Output end and brightness detection control circuit connect, the output end that brightness detects control circuit is connected with brightness regulating circuit；
The brightness detection control circuit includes resistance R2, resistance R3, resistance R4, resistance R5, triode Q1 and photo resistance
The power output end of RL, button power supply are connect with the emitter of one end of resistance R3, one end of resistance R2 and triode Q1 respectively,
The other end of resistance R3 is connect with one end of resistance R5 and brightness regulating circuit respectively, the other end and triode of resistance R5
The collector of Q1 connects, and the other end of resistance R2 is connect with one end of the base stage of triode Q1 and resistance R4 respectively, resistance R4
Other end connect with one end of photo resistance RL, the other end of photo resistance RL ground connection；
The brightness regulating circuit includes first light source L1s, second light source L2s, resistance R6, resistance R7, resistance R8, resistance
R9, resistance R10, triode Q2 and triode Q3, the other end of resistance R3 respectively with one end of first light source L1s, resistance R9
One end, first light source L2s one end connection, the other end of first light source L1s connect with resistance R6, other the one of resistance R6
End is connect with one end of one end of resistance R7 and resistance R8 respectively, the other end ground connection of resistance R7, the other end of resistance R8
It is connect with the base stage of triode Q2, resistance R9 other ends connect with the base stage of the collector of triode Q2 and triode Q3 respectively
It connects, the emitter of triode Q2 is grounded by resistance R10, and the other end of second light source L2s connects with the collector of triode Q3
It connects, the emitter ground connection of triode Q3；Wherein, the brightness of first light source L1s is more than the brightness of second light source L2s；
The method includes：
The output current that the current output terminal of button power supply is exported to brightness regulating circuit is superimposed to obtain by the electric current of two branches,
Wherein one first branch for being routed through resistance R3 obtains, and the second branch that an other routing includes photo resistance RL obtains,
When light around brightness regulation lamp is stronger, the resistance value of photo resistance RL becomes smaller so that and the electric current that the branch generates increases, from
And the electric current of superposition is increased；And the light around projection arrangement it is weaker when, the resistance value of photo resistance RL becomes larger so that should
The electric current that branch generates reduces, so that the electric current of superposition reduces；
Brightness regulating circuit is used to detect the size of current of control circuit input to first light source L1s and second light source according to brightness
The light source that L2s superpositions generate carries out bright adjusting, specifically：（1）When light around brightness regulation lamp is stronger, examined from brightness
The size of current for surveying control circuit input is larger, to first light source L1s, resistance R9 and second light source L2s is at this time high electricity
Pressure, since the resistance value of resistance R9 is more than the resistance value of resistance R6, resistance R7, resistance R8 and resistance R10, the voltage of first light source L1s
By branching to the branch of the branch and resistance R7 of resistance R8 after first light source L1s, wherein since resistance R7 is grounded so that first
Light source L1s is opened and is shone, and the collector and emitter short circuit of triode Q2 at this time so that resistance R9's branches to Q2
The voltage of collector is more than the voltage of triode Q3 base stages so that the collector of triode Q3 is opened a way with emitter, and further
So that second light source L2s does not work；（2）During light around brightness regulation lamp weakens gradually, brightness detection control
The superimposed current that circuit generates also reduces gradually, and the voltage of triode Q2 base stages is not high voltage, and triode Q2 is worked normally, this
When triode Q3 base stages voltage be not low-voltage, triode Q3 also works normally, at this time first light source L1s and second light source
L2s is opened and is shone, and since the voltage of input reduces, and the brightness of second light source L2s is bright less than first light source L1s
Degree, the light source of superposition also slowly reduce brightness；（3）Light around brightness regulation lamp is weaker so that the voltage generated is less than
When the operating voltage of first light source L1s, first light source L1s does not work, while the voltage of triode Q2 base stages is also low-voltage, with
The voltage of the base stage of triode Q3 is opposite high voltage, and triode Q2 does not work, and triode Q3 collector and emitters are short
Road so that the electric current inputted from brightness detection control circuit only flows to second light source L2s, and second light source L2s works, simultaneously
Since the voltage of input reduces, the light source of superposition also slowly reduce brightness.
Further, the triode Q1 is PNP type triode, and triode Q2 and triode Q3 are NPN type triode.
Further, the brightness regulation lamp further includes external shell, and the photo resistance RL is set to external shell
On one of body side.
Further, first light source L1s and second light source L2s are connected in series by multiple light sources L.
Further, the button power supply provides 3.3V voltages.
Further, it is additionally provided with key switch between the button power supply and brightness detection control circuit
button。
The beneficial effects of the invention are as follows：The present invention is using superimposed current and the control mode for being superimposed light source, to brightness regulation
Light source around lamp is detected, and realizes the brightness of the light source automatically generated, while without expensive microcontroller or processor
Can be realized, cost is relatively low, and the configuration of button power supply make this brightness regulation lamp be applied to projection advertisement when be convenient for carrying
With movement, in addition button power supply be also convenient for changing.
Description of the drawings
Fig. 1 is circuit connection diagram of the present invention.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1, a kind of application method of the brightness regulation lamp based on button power supply, including button power supply, brightness inspection
Control circuit, brightness regulating circuit are surveyed, the output end of the button power supply is connected with brightness detection control circuit, brightness detection
The output end of control circuit is connected with brightness regulating circuit；
The brightness detection control circuit includes resistance R2, resistance R3, resistance R4, resistance R5, triode Q1 and photo resistance
The voltage output end of RL, button power supply are connect with the emitter of one end of resistance R3, one end of resistance R2 and triode Q1 respectively,
The other end of resistance R3 is connect with one end of resistance R5 and brightness regulating circuit respectively, the other end and triode of resistance R5
The collector of Q1 connects, and the other end of resistance R2 is connect with one end of the base stage of triode Q1 and resistance R4 respectively, resistance R4
Other end connect with one end of photo resistance RL, the other end of photo resistance RL ground connection；
The brightness regulating circuit includes first light source L1s, second light source L2s, resistance R6, resistance R7, resistance R8, resistance
The resistance value of R9, resistance R10, triode Q2 and triode Q3, resistance R9 are more than resistance R6, resistance R7, resistance R8 and resistance R10
Resistance value；The other end of resistance R3 connects with one end of one end of first light source L1s, one end of resistance R9, first light source L2s respectively
Connect, the other end of first light source L1s is connect with resistance R6, the other end of resistance R6 respectively with one end of resistance R7 and resistance
One end of R8 connects, and the other end ground connection of resistance R7, the other end of resistance R8 is connect with the base stage of triode Q2, resistance R9
Other end is connect with the base stage of the collector of triode Q2 and triode Q3 respectively, and the emitter of triode Q2 passes through resistance
R10 is grounded, and the other end of second light source L2s is connect with the collector of triode Q3, the emitter ground connection of triode Q3；Its
In, the brightness of first light source L1s is more than the brightness of second light source L2s（Under the voltage of identical normal range (NR)）.First light source L1s's
Operating voltage is more than the operating voltage of second light source L2s, and accordingly, the conducting voltage of triode Q2 is more than the conducting of triode Q3
Voltage.
The use principle of the present invention is as follows：
The current output terminal of button power supply（It is exported to brightness regulating circuit）Output current be superimposed by the electric current of two branches
It arrives, wherein the first branch for being routed through resistance R3 obtains, and the second branch that an other routing includes photo resistance RL obtains
It arrives, the light around brightness regulation lamp is stronger（Ambient enviroment is relatively bright）When, the resistance value of photo resistance RL becomes smaller so that the branch
The electric current that road generates increases, so that the electric current of superposition increases；And the light around brightness regulation lamp is weaker（Ambient enviroment
It is darker）When, the resistance value of photo resistance RL becomes larger so that the electric current that the branch generates reduces（It can be down to ignoring）, to
So that the electric current of superposition reduces.
Brightness regulating circuit is used to detect the size of current of control circuit input to first light source L1s and second according to brightness
The light source that light source L2s superpositions generate carries out bright adjusting, specifically：（1）When light around brightness regulation lamp is stronger, from bright
The size of current of degree detection control circuit input is larger, is to first light source L1s, resistance R9 and second light source L2s at this time
High voltage, since the resistance value of resistance R9 is more than the resistance value of resistance R6, resistance R7, resistance R8 and resistance R10, first light source L1s's
Voltage is by branching to the branch of the branch and resistance R7 of resistance R8 after first light source L1s, wherein making since resistance R7 is grounded
First light source L1s is opened and is shone, and the collector and emitter short circuit of triode Q2 at this time so that the shunting of resistance R9
It is more than the voltage of triode Q3 base stages to the voltage of Q2 collectors so that the collector of triode Q3 is opened a way with emitter, is gone forward side by side
One step makes second light source L2s not work.（2）During light around brightness regulation lamp weakens gradually, brightness detection
The superimposed current that control circuit generates also reduces gradually, and the voltage of triode Q2 base stages is not high voltage, the normal works of triode Q2
Make, the voltage of triode Q3 base stages is not low-voltage at this time, and triode Q3 is also worked normally, at this time first light source L1s and second
Light source L2s is opened and is shone, and since the voltage of input reduces, and the brightness of second light source L2s is less than first light source L1s
Brightness, the light source of superposition also slowly reduce brightness；（3）Light around brightness regulation lamp is weaker so that the voltage generated
When operating voltage less than first light source L1s, first light source L1s does not work, while the voltage of triode Q2 base stages is also low electricity
Pressure, the voltage with the base stage of triode Q3 is opposite high voltage, and triode Q2 does not work, and triode Q3 collectors and transmitting
Extremely short road so that the electric current inputted from brightness detection control circuit only flows to second light source L2s, and second light source L2s works,
Simultaneously because the voltage of input reduces, the light source of superposition（The brightness that first light source L1s is generated almost is considered as not have）?
Slowly reduce brightness.
Preferably, in the above-described embodiments, the first light source L1s is the light source for slightly having yellow light, described second
Light source L2s is white light source so that is generated with coloured light in the case of becoming clear around brightness regulation lamp so that is used
Person sees clearer.
Preferably, in the present embodiment, as shown in Figure 1, the triode Q1 be PNP type triode, triode Q2 and
Triode Q3 is NPN type triode.
Preferably, in the present embodiment, the brightness regulation lamp further includes external shell, and the photo resistance RL is set
It is placed on one of external shell side.
Preferably, in the present embodiment, first light source L1s and second light source L2s are connected in series by multiple light sources L, are made
The light source effect that must be generated is more preferable.
Preferably, in the present embodiment, the button power supply provides 3.3V voltages.
Preferably, in the present embodiment, the button power supply and brightness detection control circuit between be additionally provided with by
Key switch button.Key switch button is used to open and close the voltage of button power supply offer, when user needs to open
When brightness regulation lamp, key switch button is just pressed.
The present invention is described by embodiment, but is not limited the invention, with reference to description of the invention, institute
Other variations of disclosed embodiment, are such as readily apparent that the professional person of this field, such variation should belong to
Within the scope of the claims in the present invention limit.
Claims (6)
1. a kind of application method of the brightness regulation lamp based on button power supply, it is characterised in that：Brightness regulation lamp includes button electricity
Source, brightness detection control circuit, brightness regulating circuit, the output end of the button power supply and brightness detection control circuit connect
It connects, the output end of brightness detection control circuit is connected with brightness regulating circuit；
The brightness detection control circuit includes resistance R2, resistance R3, resistance R4, resistance R5, triode Q1 and photo resistance
The power output end of RL, button power supply are connect with the emitter of one end of resistance R3, one end of resistance R2 and triode Q1 respectively,
The other end of resistance R3 is connect with one end of resistance R5 and brightness regulating circuit respectively, the other end and triode of resistance R5
The collector of Q1 connects, and the other end of resistance R2 is connect with one end of the base stage of triode Q1 and resistance R4 respectively, resistance R4
Other end connect with one end of photo resistance RL, the other end of photo resistance RL ground connection；
The brightness regulating circuit includes first light source L1s, second light source L2s, resistance R6, resistance R7, resistance R8, resistance
The resistance value of R9, resistance R10, triode Q2 and triode Q3, resistance R9 are more than resistance R6, resistance R7, resistance R8 and resistance R10
Resistance value；The other end of resistance R3 connects with one end of one end of first light source L1s, one end of resistance R9, first light source L2s respectively
Connect, the other end of first light source L1s is connect with resistance R6, the other end of resistance R6 respectively with one end of resistance R7 and resistance
One end of R8 connects, and the other end ground connection of resistance R7, the other end of resistance R8 is connect with the base stage of triode Q2, resistance R9
Other end is connect with the base stage of the collector of triode Q2 and triode Q3 respectively, and the emitter of triode Q2 passes through resistance
R10 is grounded, and the other end of second light source L2s is connect with the collector of triode Q3, the emitter ground connection of triode Q3；Its
In, the brightness of first light source L1s is more than the brightness of second light source L2s；
The method includes：
The output current that the current output terminal of button power supply is exported to brightness regulating circuit is superimposed to obtain by the electric current of two branches,
Wherein one first branch for being routed through resistance R3 obtains, and the second branch that an other routing includes photo resistance RL obtains,
When light around brightness regulation lamp is stronger, the resistance value of photo resistance RL becomes smaller so that and the electric current that the branch generates increases, from
And the electric current of superposition is increased；And the light around projection arrangement it is weaker when, the resistance value of photo resistance RL becomes larger so that should
The electric current that branch generates reduces, so that the electric current of superposition reduces；
Brightness regulating circuit is used to detect the size of current of control circuit input to first light source L1s and second light source according to brightness
The light source that L2s superpositions generate carries out bright adjusting, specifically：（1）When light around brightness regulation lamp is stronger, examined from brightness
The size of current for surveying control circuit input is larger, to first light source L1s, resistance R9 and second light source L2s is at this time high electricity
Pressure, since the resistance value of resistance R9 is more than the resistance value of resistance R6, resistance R7, resistance R8 and resistance R10, the voltage of first light source L1s
By branching to the branch of the branch and resistance R7 of resistance R8 after first light source L1s, wherein since resistance R7 is grounded so that first
Light source L1s is opened and is shone, and the collector and emitter short circuit of triode Q2 at this time so that resistance R9's branches to Q2
The voltage of collector is more than the voltage of triode Q3 base stages so that the collector of triode Q3 is opened a way with emitter, and further
So that second light source L2s does not work；（2）During light around brightness regulation lamp weakens gradually, brightness detection control
The superimposed current that circuit generates also reduces gradually, and the voltage of triode Q2 base stages is not high voltage, and triode Q2 is worked normally, this
When triode Q3 base stages voltage be not low-voltage, triode Q3 also works normally, at this time first light source L1s and second light source
L2s is opened and is shone, and since the voltage of input reduces, and the brightness of second light source L2s is bright less than first light source L1s
Degree, the light source of superposition also slowly reduce brightness；（3）Light around brightness regulation lamp is weaker so that the voltage generated is less than
When the operating voltage of first light source L1s, first light source L1s does not work, while the voltage of triode Q2 base stages is also low-voltage, with
The voltage of the base stage of triode Q3 is opposite high voltage, and triode Q2 does not work, and triode Q3 collector and emitters are short
Road so that the electric current inputted from brightness detection control circuit only flows to second light source L2s, and second light source L2s works, simultaneously
Since the voltage of input reduces, the light source of superposition also slowly reduce brightness.
2. a kind of application method of brightness regulation lamp based on button power supply according to claim 1, it is characterised in that：Institute
The triode Q1 stated is PNP type triode, and triode Q2 and triode Q3 are NPN type triode.
3. a kind of application method of brightness regulation lamp based on button power supply according to claim 1, it is characterised in that：Institute
The brightness regulation lamp stated further includes external shell, and the photo resistance RL is set on one of external shell side.
4. a kind of application method of brightness regulation lamp based on button power supply according to claim 1, it is characterised in that：The
One light source L1s and second light source L2s are connected in series by multiple light sources L.
5. a kind of application method of brightness regulation lamp based on button power supply according to claim 1, it is characterised in that：Institute
The button power supply stated provides 3.3V voltages.
6. a kind of application method of brightness regulation lamp based on button power supply according to claim 1, it is characterised in that：?
It is additionally provided with key switch button between the button power supply and brightness detection control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603133.6A CN108777905A (en) | 2018-06-12 | 2018-06-12 | A kind of application method of the brightness regulation lamp based on button power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603133.6A CN108777905A (en) | 2018-06-12 | 2018-06-12 | A kind of application method of the brightness regulation lamp based on button power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108777905A true CN108777905A (en) | 2018-11-09 |
Family
ID=64026045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810603133.6A Withdrawn CN108777905A (en) | 2018-06-12 | 2018-06-12 | A kind of application method of the brightness regulation lamp based on button power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108777905A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112750404A (en) * | 2019-10-30 | 2021-05-04 | 深圳Tcl数字技术有限公司 | Brightness adjusting circuit, method and display device of indicator light and backlight |
-
2018
- 2018-06-12 CN CN201810603133.6A patent/CN108777905A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112750404A (en) * | 2019-10-30 | 2021-05-04 | 深圳Tcl数字技术有限公司 | Brightness adjusting circuit, method and display device of indicator light and backlight |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181109 |
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| WW01 | Invention patent application withdrawn after publication |