CN206164946U - Lamps and lanterns light modulation control circuit and lamps and lanterns - Google Patents
Lamps and lanterns light modulation control circuit and lamps and lanterns Download PDFInfo
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- CN206164946U CN206164946U CN201621088844.7U CN201621088844U CN206164946U CN 206164946 U CN206164946 U CN 206164946U CN 201621088844 U CN201621088844 U CN 201621088844U CN 206164946 U CN206164946 U CN 206164946U
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Abstract
The utility model provides a lamps and lanterns light modulation control circuit and lamps and lanterns, these lamps and lanterns light modulation control circuit includes operational amplifier, the photo resistance, first resistance, the vehicle charging control system further comprises a second resistor, third resistance, a first diode, controllable accurate steady voltage source and opto -coupler, operational amplifier includes first inverting input end, non inverting input end and first output, first inverting input end is connected to the supply circuit's of lamps and lanterns cathode output, the first end of photo resistance is connected to non inverting input end, the first end of first resistance and the first end of second resistance, the second end of photo resistance and the second termination ground of first resistance, the negative pole and the control end in controllable accurate steady voltage source are connected to the second end of second resistance, the negative pole in controllable accurate steady voltage source passes through the supply circuit's of third ohmic connection to lamps and lanterns positive output end, the plus earth in controllable accurate steady voltage source, first output is connected to the negative pole of opto -coupler through first diode, the positive pole of opto -coupler meets reference voltage, the PWM module of lamps and lanterns is connected to the collecting electrode of opto -coupler, duty cycle with the PWM signal of adjusting output.
Description
Technical field
The utility model is related to a kind of light fixture control technology field, especially a kind of lamp light-regulating control circuit and light fixture.
Background technology
Desk lamp used in everyday, typically by manual controlling changing desk lamp luminous flux, desk lamp cannot be logical according to ambient light
The size of amount carrys out adjustable desk lamp luminous flux, it is impossible to meets well in people's daily life and dims demand.Therefore, needing one kind badly can
With according to the size of ambient light fluxes come the desk lamp of adjustable desk lamp luminous flux.
Utility model content
The purpose of this utility model is to provide lamp light-regulating control circuit, can be adjusted according to the size of ambient light fluxes
Section desk lamp luminous flux.
Another object of the present utility model is to provide using the light fixture of above-mentioned adjusting control circuit.
To achieve these goals, the utility model embodiment provides following technical scheme：
The utility model embodiment provides a kind of lamp light-regulating control circuit, for adjusting the brightness of light fixture, including computing
Amplifier, photo resistance, first resistor, second resistance, 3rd resistor, the first diode, controllable accurate source of stable pressure and optocoupler, institute
Operational amplifier is stated including the first inverting input, the first in-phase input end and the first output end, first inverting input
The cathode output end of the power supply circuits of the light fixture is connected to, first in-phase input end connects the first of the photo resistance
The first end of end, the first end of the first resistor and the second resistance, the second end of the photo resistance and described first
The second end ground connection of resistance, the second end of the second resistance connects the negative electrode and control end of the controllable accurate source of stable pressure, institute
State controllable accurate source of stable pressure negative electrode be connected to by the 3rd resistor light fixture power supply circuits cathode output end, institute
The plus earth of controllable accurate source of stable pressure is stated, first output end is connected to the moon of the optocoupler by first diode
Pole, the anode of the optocoupler connects reference voltage, and the colelctor electrode of the optocoupler connects the PWM module of the light fixture, the optocoupler
Grounded emitter, to adjust the dutycycle of the pwm signal of the PWM module output.
Wherein, also including the first electric capacity, the 6th resistance, first output end passes sequentially through first electric capacity and described
6th resistance is connected to first inverting input.
Wherein, also including the 4th resistance and the 7th resistance, first inverting input is connected to by the 7th resistance
The cathode output end of the power supply circuits of the light fixture, first inverting input passes through the 4th resistance eutral grounding.
Wherein, also including the 5th resistance, the 8th resistance and the second diode, the operational amplifier also includes that second is anti-phase
Input, the second in-phase input end and the second output end, second inverting input is connected to institute by the 8th resistance
The cathode output end of the power supply circuits of light fixture is stated, second inverting input is by the 5th resistance eutral grounding, second homophase
Input connects the negative electrode and control end of the controllable accurate source of stable pressure, and second output end is connected by second diode
It is connected to the negative electrode of optocoupler.
Wherein, also including the second electric capacity and the 9th resistance, second output end passes sequentially through second electric capacity and institute
State the 9th resistance and be connected to second inverting input.
Wherein, operational amplifier model LM358.
Wherein, model PC817B of the optocoupler.
Wherein, also including the tenth resistance, the tenth resistant series are between the optocoupler negative electrode and anode.
The utility model also provides a kind of light fixture, using the lamp light-regulating control circuit described in above-mentioned any one.
The utility model embodiment has the advantage that or beneficial effect：
Lamp light-regulating control circuit can automatically adjust light fixture according to the light intensity of surrounding environment in the utility model
Electrical current value, so as to adjust the luminous flux (brightness) of light fixture, eliminates the trouble for being manually adjusted light fixture luminous flux.
Description of the drawings
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the lamp light-regulating control circuit that the utility model embodiment is provided.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not before creative work is made
The all other embodiment for being obtained is put, the scope of the utility model protection is belonged to.
Additionally, the explanation of following embodiment is with reference to additional diagram, may be used to implement to illustrate the utility model
Specific embodiment.The direction term being previously mentioned in the utility model, for example, " on ", D score, "front", "rear", "left", "right",
" interior ", " outward ", " side " etc., are only the directions with reference to annexed drawings, therefore, the direction term for using is in order to more preferable, more clear
Chu's ground explanation and understand the utility model, rather than indicate or infer the device or element of indication must have specific orientation,
With specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or detachably connected, Huo Zheyi
The connection of body ground；Can be mechanically connected；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in this practicality
Concrete meaning in new.
Additionally, in description of the present utility model, unless otherwise stated, " multiple " are meant that two or more.
If occurring the term of " operation " in this specification, it refers not only to independent operation, when cannot clearly distinguish with other operations,
As long as can realize that the effect desired by the operation is then also included within this term.In addition, the number represented with "～" in this specification
Value scope refers to the scope that the numerical value recorded before and after "～" is included as minimum of a value and maximum.In the accompanying drawings,
Structure is similar or identical to be indicated by the same numeral.
Refer to Fig. 1, a kind of lamp light-regulating control circuit that Fig. 1 is provided for embodiment of the present utility model.Lamp light-regulating
Control circuit controls the output current virtual value of power supply circuits 10, so as to adjust light fixture luminous flux (i.e. brightness).The utility model
Light fixture can need to automatically adjust the light fixture of luminous flux for desk lamp, street lamp etc..Lamp light-regulating control circuit includes operation amplifier
Device U1, photo resistance Ra, first resistor R1, second resistance R2,3rd resistor R3, the first diode D1, controllable accurate source of stable pressure
U2 and optocoupler U3.Under the irradiation of high light, its resistance can reduce rapidly photo resistance Ra.Controllable accurate source of stable pressure U2 is used to provide
Stable voltage.Preferably, the controllable accurate source of stable pressure U2 can select TL431 models.The operational amplifier U1 includes
First inverting input, the first in-phase input end, the first output end, first inverting input is connected to the confession of the light fixture
The cathode output end DC- of circuit 10, first in-phase input end connect the first end of the photo resistance Ra, described first
The first end of resistance R1 and the second resistance R2 first end, second end of the photo resistance Ra and first resistor R1
Second end is grounded, and the second end of second resistance R2 connects the negative electrode and control end of the controllable accurate source of stable pressure U2, described
The negative electrode of controllable accurate source of stable pressure U2 is connected to the cathode output end DC+ of power circuit 10 by 3rd resistor R3, described
The plus earth of controllable accurate source of stable pressure U2, first output end is connected to the moon of the optocoupler U3 by the first diode D1
Pole, the anode of the optocoupler U3 connects reference voltage.The reference voltage can be provided by power supply circuits 10, the collection of the optocoupler U3
Electrode connects PWM (Pulse Width Modulation, the pulse width modulation) module (not shown) of the light fixture, described
The grounded emitter of optocoupler, to adjust the dutycycle of the pwm signal of the PWM module output.The PWM module changes output
The dutycycle of pwm signal is so as to changing the current effective value of the power supply circuits of the light fixture.
It is understood that the operational amplifier U1 also includes power end and earth terminal, the power end connection reference
Voltage, earth terminal grounding connection.
Specifically, under the stable environment of light intensity, photo resistance Ra resistances are permanent big, the first in-phase input end for light fixture
Voltage stabilization, the voltage of the first inverting input is also stable, and the voltage of the first output end output of operational amplifier U1 is also stable,
The electric current that optocoupler U3 is flowed into Jing after the first diode D2 is also stable, and the output duty cycle of optocoupler U3 control PWM modules is constant
Pwm signal, so as to control the power rating of the cathode output end DC+ of power supply circuits 10 and cathode output end DC- outputs, electric current has
Valid value is constant, and now lamp luminescence intensity is specified, and the specified light fixture of luminous flux is most bright.
When light fixture local environment gradually brightens, photo resistance Ra resistances are little by changing to greatly, now operational amplifier U1
The voltage of the first in-phase input end decline, the voltage of first inverting input of operational amplifier U1 is more than the first homophase input
The voltage at end, the voltage of the output end output of operational amplifier U1 also declines, and the electricity of optocoupler U3 is flowed into Jing after the first diode D2
Rheology is big, and the dutycycle of the pwm signal of the output of optocoupler U3 control PWM modules diminishes, defeated so as to control the positive pole of power supply circuits 10
Go out to hold the power output of DC+ and cathode output end DC- outputs to diminish, current effective value reduces, and the first of operational amplifier U1 is anti-
The voltage of phase input reduces, lamp luminescence intensity step-down.Until the first inverting input and the first in-phase input end electricity
When pressing identical, lamp brightness keeps constant.
When light fixture local environment by it is bright dimmed when, photo resistance Ra resistances by it is little change to it is big, the whole circuit course of work with
Said process is conversely, here is omitted.
It is understood that lamp light-regulating control circuit response speed is Microsecond grade in the utility model, will not be to people
Use cause discomfort impact.
Lamp light-regulating control circuit can automatically adjust light fixture according to the light intensity of surrounding environment in the utility model
Electrical current value, so as to adjust the luminous flux of light fixture, eliminates the trouble for being manually adjusted light fixture luminous flux.
Optionally, model PC817B of the optocoupler U2.
Optionally, lamp light-regulating control circuit also includes the 8th resistance R8, the 5th resistance R5 and the second diode D2, described
Operational amplifier U1 is two-way operational amplifier, optionally, operational amplifier U2 models LM358.Operational amplifier U1
Also include the second inverting input, the second in-phase input end and the second output end, second inverting input is by described the
Eight resistance R8 are connected to the cathode output end DC+, and second inverting input is grounded by the 5th resistance R5, and described second
In-phase input end connects the negative electrode and control end of the controllable accurate source of stable pressure U2, and second output end passes through the described 2nd 2
Pole pipe D2 is connected to the negative electrode of optocoupler U3.
It is understood that the 8th resistance R8, the 5th resistance R5, the second diode D2 and operational amplifier U2
The second inverting input, between the second in-phase input end and the second output end be collectively forming mu balanced circuit so that positive pole is exported
The magnitude of voltage of end DC+ and cathode output end DC- outputs keeps constant.
Optionally, lamp light-regulating control circuit also includes the first electric capacity C1, the 6th resistance R6, and first output end is successively
First inverting input is connected to after the first electric capacity C1 and the 6th resistance R6.First electric capacity C1 and the 6th resistance
R6 collectively constitutes feedback circuit so that first inverting input can be slowly varying, it is to avoid first inverting input
Voltage rises or falls too fast, generation interference.
Optionally, lamp light-regulating control circuit also includes the 7th resistance R7 and the 4th resistance R4, first anti-phase input
Hold by the 7th resistance R7 be connected to the cathode output end DC- of the power supply circuits 10, first inverting input passes through
Institute's the 4th resistance R4 ground connection.
Optionally, lamp light-regulating control circuit also include the second electric capacity C2 and the 9th resistance R9, second output end according to
It is secondary that second inverting input is connected to by the second electric capacity C2 and the 9th resistance R9.
Optionally, lamp light-regulating control circuit also includes that the tenth resistance R10, the tenth resistance R10 are series at the light
Between coupling negative electrode and anode.
The present invention also provides a kind of light fixture, and the light fixture includes the lamp light-regulating control described in above-mentioned any one embodiment
Circuit.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or feature that the embodiment or example are described
In being contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term
It is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Embodiments described above, does not constitute the restriction to the technical scheme protection domain.It is any in above-mentioned enforcement
Modification, equivalent and improvement made within the spirit and principle of mode etc., should be included in the protection model of the technical scheme
Within enclosing.
Claims (9)
1. a kind of lamp light-regulating control circuit, for adjusting the brightness of light fixture, it is characterised in that including operational amplifier, photosensitive
Resistance, first resistor, second resistance, 3rd resistor, the first diode, controllable accurate source of stable pressure and optocoupler, the operation amplifier
Device includes the first inverting input, the first in-phase input end and the first output end, and first inverting input is connected to described
The cathode output end of the power supply circuits of light fixture, first in-phase input end connect the first end of the photo resistance, described the
The first end of the first end of one resistance and the second resistance, the second end of the photo resistance and the second of the first resistor
End ground connection, the second end of the second resistance connects the negative electrode and control end of the controllable accurate source of stable pressure, the controllable accurate
The negative electrode of source of stable pressure is connected to the cathode output end of the power supply circuits of the light fixture, the controllable accurate by the 3rd resistor
The plus earth of source of stable pressure, first output end is connected to the negative electrode of the optocoupler, the light by first diode
The anode of coupling connects reference voltage, and the colelctor electrode of the optocoupler connects the PWM module of the light fixture, and the emitter stage of the optocoupler connects
Ground, to adjust the dutycycle of the pwm signal of the PWM module output.
2. lamp light-regulating control circuit as claimed in claim 1, it is characterised in that also including the first electric capacity, the 6th resistance, institute
State that the first output end passes sequentially through first electric capacity and the 6th resistance is connected to first inverting input.
3. lamp light-regulating control circuit as claimed in claim 1, it is characterised in that also including the 4th resistance and the 7th resistance,
First inverting input by the 7th resistance be connected to the light fixture power supply circuits cathode output end, described first
Inverting input passes through the 4th resistance eutral grounding.
4. lamp light-regulating control circuit as claimed in claim 1, it is characterised in that also including the 5th resistance, the 8th resistance and
Second diode, the operational amplifier also includes the second inverting input, the second in-phase input end and the second output end, described
Second inverting input is connected to the cathode output end of the power supply circuits of the light fixture by the 8th resistance, and described second is anti-
Phase input connects the negative electrode of the controllable accurate source of stable pressure and control by the 5th resistance eutral grounding, second in-phase input end
End, second output end is connected to the negative electrode of optocoupler by second diode.
5. lamp light-regulating control circuit as claimed in claim 4, it is characterised in that also including the second electric capacity and the 9th resistance,
Second output end passes sequentially through second electric capacity and the 9th resistance is connected to second inverting input.
6. lamp light-regulating control circuit as claimed in claim 4, it is characterised in that operational amplifier model LM358.
7. lamp light-regulating control circuit as claimed in claim 1, it is characterised in that model PC817B of the optocoupler.
8. lamp light-regulating control circuit as claimed in claim 1, it is characterised in that also including the tenth resistance, the described tenth is electric
Resistance is series between the optocoupler negative electrode and anode.
9. a kind of light fixture, it is characterised in that including the lamp light-regulating control circuit described in claim 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621088844.7U CN206164946U (en) | 2016-09-28 | 2016-09-28 | Lamps and lanterns light modulation control circuit and lamps and lanterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621088844.7U CN206164946U (en) | 2016-09-28 | 2016-09-28 | Lamps and lanterns light modulation control circuit and lamps and lanterns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164946U true CN206164946U (en) | 2017-05-10 |
Family
ID=58652109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621088844.7U Active CN206164946U (en) | 2016-09-28 | 2016-09-28 | Lamps and lanterns light modulation control circuit and lamps and lanterns |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206164946U (en) |
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2016
- 2016-09-28 CN CN201621088844.7U patent/CN206164946U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180706 Address after: 518000 Sanbai Industrial Park, Xiao Bai Mang, Nanshan District, Shenzhen, Guangdong Patentee after: Processing Technology Co., Ltd. Address before: 516000 Hongyang (International) industrial manufacturing city, Luoyang Town, Boluo County, Huizhou, Guangdong, China Patentee before: Huizhou Maoshuo Energy Technology Co.,Ltd. |