CN109309993A - Circuit light adjusting circuit for intelligent lighting - Google Patents
Circuit light adjusting circuit for intelligent lighting Download PDFInfo
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- CN109309993A CN109309993A CN201811367563.9A CN201811367563A CN109309993A CN 109309993 A CN109309993 A CN 109309993A CN 201811367563 A CN201811367563 A CN 201811367563A CN 109309993 A CN109309993 A CN 109309993A
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- 238000005286 illumination Methods 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000007540 photo-reduction reaction Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses a kind of circuit light adjusting circuits for intelligent lighting, are connected between input power and LED illumination System, including voltage monitoring unit, light modulation micro control unit and pwm signal turn electric current dimming unit；The voltage monitoring unit, for monitoring the input voltage of the input power；The light modulation micro control unit, for controlling the pwm signal that the pwm signal turns electric current dimming unit according to the output of the changing value of the input voltage；The pwm signal turns electric current dimming unit, for the input current according to pwm signal adjustment load in the LED illumination System.Circuit light adjusting circuit of the invention, circuit light modulation is carried out suitable for the LED module to intelligent illuminating system, it applies also for carrying out circuit light with the LED module in region in intelligent illuminating system, and dimming process and equal photoreduction process are not influenced by input power fluctuation, realize constant-current source light modulation, light.
Description
Technical field
The invention belongs to intelligent lighting technical fields, and in particular to a kind of circuit light adjusting circuit for intelligent lighting.
Background technique
With the rapid development of electronic technology, LED lamp product gradually moves towards intelligent, to realize economize on electricity, scene light
The purpose of control, the LED lamp with dimming function is using more and more extensive.
Currently, a kind of widely used LED light regulating technology is PWM technology, it is insensitive to high frequency flicker using human eye
And the induction accumulation characteristics to brightness, the light on and off of LED light source are controlled by pwm signal, adjust the duty ratio of pwm signal to adjust
The lighting time of whole LED light source, when the duty ratio of pwm signal becomes larger, the time that LED light source is lighted in one cycle becomes
Long, the brightness that human eye perceives becomes larger；Conversely, LED light source is lighted in one cycle when the duty ratio of pwm signal becomes smaller
Time shorten, the brightness that human eye perceives becomes smaller, with this come realize light modulation.
Existing light regulating technology, since the required precision of light modulation is not high, or since current technology constrains, so that after light modulation
It loads the electric current on LED module to be easy to be influenced by input power fluctuation, restricts light regulating technology and develop to higher precision direction.
On the other hand, in the light modulation of the circuit of electric system, multiple LED modules in a region are connected on input power
On, after powering on, with the access of load, the electric current of each LED module can be sequentially reduced in same area, be caused in a region
On the one hand the brightness irregularities of each LED module influence illuminating effect, on the other hand influence the service life of LED module.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of circuit light adjusting circuit, which is suitable for intelligence
The LED module of energy lighting system carries out circuit light modulation, applies also for carrying out in intelligent illuminating system with the LED module in region
Circuit light, and dimming process and equal photoreduction process are not influenced by input power fluctuation, realize constant-current source light modulation, light.
In order to solve the above-mentioned technical problems, the present invention provides a kind of circuit light adjusting circuit for intelligent lighting, connections
Between input power and LED illumination System, including voltage monitoring unit, light modulation micro control unit and pwm signal turn electric current light modulation
Unit；
The voltage monitoring unit, for monitoring the input voltage of the input power；
The light modulation micro control unit turns electricity for controlling the pwm signal according to the output of the changing value of the input voltage
Flow the pwm signal of dimming unit；
The pwm signal turns electric current dimming unit, for being loaded according to pwm signal adjustment in the LED illumination system
Input current on system.
In a preferred embodiment of the present invention, further comprise the pwm signal turn electric current dimming unit include PWM light modulation
Chip U1, five R5 of resistance, six R6 of resistance, metal-oxide-semiconductor Q4；
After the gate output end GATE of the grid connection PWM light modulation chip U1 of the metal-oxide-semiconductor Q4, drain electrode connection inductance L
LED illumination System is connected, source electrode connects the chip select terminal CS of connection PWM light modulation chip U1 after six R6 of resistance；
The source electrode of the metal-oxide-semiconductor Q4 is grounded after being also connected with five R5 of resistance, and source electrode is also connected with the LED control of light modulation micro control unit
End LEDV processed；
The reference end REF connection light modulation micro control unit of the PWM light modulation chip U1.
In a preferred embodiment of the present invention, further comprise the pwm signal turn electric current dimming unit further include integral
Circuit, the integrating circuit are connected between the reference end REF and light modulation micro control unit of PWM light modulation chip U1, and being used for will be described
The pwm signal of light modulation micro control unit output exports after being converted into voltage signal to the reference end REF of PWM light modulation chip U1；
The integrating circuit includes three R3 of resistance, two C2 of four R4 of resistance, one C1 of capacitor and capacitor；Three R3 of resistance and electricity
Four R4 are hindered to be connected between the reference end REF and power end VCC of PWM light modulation chip U1；One one end C1 of capacitor ground connection, the other end
Connect the node B between resistance four R4 and REF；Two one end C2 of capacitor ground connection, the other end connect three R3 of resistance and four R4 of resistance
Between node A.
It further comprise that turn electric current dimming unit further include three poles to the pwm signal in a preferred embodiment of the present invention
Three Q3 of pipe；The PWM output end of connection light modulation micro control unit, collector after the base stage connection base resistance Rb3 of three Q3 of triode
Ground connection, emitter connect the power end VCC of connection PWM light modulation chip U1 after emitter resistance Re3.
In a preferred embodiment of the present invention, further comprise the pwm signal turn electric current dimming unit further include starting
Circuit, the start-up circuit are connected between the input power and PWM light modulation chip U1；The start-up circuit includes triode
Two Q2, voltage-stabiliser tube TVS；The input power is connected after the collector connection collector resistance Rc2 of two Q2 of triode, is sent out
Emitter-base bandgap grading connects the power input VIN of PWM light modulation chip U1, and emitter is also grounded；Its base stage connects the negative of voltage-stabiliser tube TVS
Pole, the cathode of voltage-stabiliser tube TVS are also connected with the input power, the plus earth of voltage-stabiliser tube TVS.
It further comprise that the light modulation micro control unit includes light modulation start-up circuit, institute in a preferred embodiment of the present invention
It states light modulation start-up circuit and accesses the input power for controlling LED illumination System, or control disconnects LED illumination System and defeated
Enter in power supply；
The light modulation start-up circuit includes one Q1 of relay K and triode, and relay K has normally opened contact K1, normally opened touching
Point K1 is connected between LED illumination System and input power；DC power supply is connected after one Q1 collector connection relay K of triode
VDD, emitter ground connection, base stage are connected to the start end ON for dimming micro control unit after connecting base resistance Rb1.
It further comprise the voltage monitoring unit include one R1 of resistance and resistance two in a preferred embodiment of the present invention
R2, one R1 of resistance and two R2 of resistance are connected between input power and ground, and the voltage acquisition end LV of the light modulation micro control unit connects
Node C between two R2 of one R1 of connecting resistance and resistance.
In a preferred embodiment of the present invention, further comprise one Q1 of triode be NPN type triode, triode two
Q2 is NPN type triode, and three Q3 of triode is PNP type triode.
In a preferred embodiment of the present invention, further comprise the metal-oxide-semiconductor be N-type metal-oxide-semiconductor.
It further comprise the model MV1011 of the PWM light modulation chip U1 in a preferred embodiment of the present invention.
Beneficial effects of the present invention: circuit light adjusting circuit of the invention, suitable for the LED module to intelligent illuminating system into
The light modulation of row circuit applies also for carrying out the equal light in circuit with the LED module in region in intelligent illuminating system, and dimming process and
Equal photoreduction process is not influenced by input power fluctuation, realizes constant-current source light modulation, light.
Detailed description of the invention
Fig. 1 is the circuit diagram of circuit light adjusting circuit in the preferred embodiment of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, present embodiment discloses a kind of circuit light adjusting circuit, suitable for the LED mould to intelligent illuminating system
Block carries out circuit light modulation, applies also for carrying out circuit light with the LED module in region in intelligent illuminating system.The circuit tune
Optical circuit is connected between input power and LED illumination System, including voltage monitoring unit, light modulation micro control unit and pwm signal
Turn electric current dimming unit；
Above-mentioned voltage monitoring unit, for monitoring the input voltage of above-mentioned input power；Specifically, above-mentioned voltage monitoring list
Member includes two R2 of one R1 of resistance and resistance, and one R1 of resistance and two R2 of resistance are connected between input power and ground, and above-mentioned light modulation is micro-
Control the node C between one R1 and two R2 of resistance of voltage acquisition end LV connection resistance of unit.
Above-mentioned light modulation micro control unit turns electricity for controlling above-mentioned pwm signal according to the output of the changing value of above-mentioned input voltage
Flow the pwm signal of dimming unit；
Above-mentioned pwm signal turns electric current dimming unit, for being loaded according to the adjustment of above-mentioned pwm signal in above-mentioned LED illumination system
Input current on system.
Specifically, in 5S after system electrification voltage monitoring unit acquisition input power input voltage V1, power on rear 5S
Interior, the load of rear end starts not yet, and the input voltage V1 of input power is maximum value at this time, is ginseng with this maximum voltage value
Value is examined, circuit light modulation and circuit light are carried out to LED illumination System.
In 5S after system electrification, reference pwm signal of the light modulation micro control unit according to input voltage Vi output light modulation, PWM
Signal, which will turn electric current dimming unit, to be converted into reference voltage signal Vref with reference to pwm signal, and store.
The input voltage Vi of input power is periodically monitored after system electrification 5S, above-mentioned light modulation micro control unit is according to input electricity
The difference of pressure Vi and input voltage V1 changes to export the pwm signal for controlling above-mentioned pwm signal and turning electric current dimming unit.Above-mentioned tune
Input current of the light micro control unit according to pwm signal adjustment load in above-mentioned LED illumination System.
Specifically, above-mentioned pwm signal turn electric current dimming unit include PWM light modulation chip U1, integrating circuit, five R5 of resistance,
Six R6 of resistance, metal-oxide-semiconductor Q4, three Q3 of triode.In the present embodiment technical solution, PWM dims the preferred model MV1011 of chip U1,
Three Q3 of triode is it is preferable to use PNP type triode, and it is preferable to use N-type metal-oxide-semiconductors by metal-oxide-semiconductor Q4.
After the gate output end GATE of the grid connection PWM light modulation chip U1 of above-mentioned metal-oxide-semiconductor Q4, drain electrode connection inductance L
LED illumination System is connected, source electrode connects the chip select terminal CS of connection PWM light modulation chip U1 after six R6 of resistance；Above-mentioned metal-oxide-semiconductor Q4's
Source electrode is grounded after being also connected with five R5 of resistance, and source electrode is also connected with the LED control terminal LEDV of light modulation micro control unit；Above-mentioned PWM light modulation
The above-mentioned light modulation micro control unit of reference end REF connection of chip U1.
Above-mentioned integrating circuit be connected to PWM light modulation chip U1 reference end REF and light modulation micro control unit between, for by
It states after the pwm signal that light modulation micro control unit exports is converted into voltage signal and exports to the reference end REF of PWM light modulation chip U1；On
Stating integrating circuit includes three R3 of resistance, two C2 of four R4 of resistance, one C1 of capacitor and capacitor；Above-mentioned three R3 of resistance and four R4 of resistance series connection
Between the reference end REF and power end VCC of PWM light modulation chip U1；One one end C1 of capacitor ground connection, the other end connect resistance four
Node B between R4 and REF；Two one end C2 of capacitor ground connection, the other end connect the node between three R3 of resistance and four R4 of resistance
A。
The PWM output end of connection light modulation micro control unit, collection after the base stage connection base resistance Rb3 of above-mentioned three Q3 of triode
Electrode ground connection, emitter connect the power end VCC of connection PWM light modulation chip U1 after emitter resistance Re3.
Pwm signal of the invention turns the pwm signal that electric current dimming unit will dim micro control unit output by integrating circuit
It is converted into voltage signal, PWM dims chip U1 and determines according to the difference of voltage signal and reference voltage signal Vref after conversion
The pwm signal of output control transistor Q4, the duty ratio for controlling the pwm signal of transistor Q4 is bigger, loads in LED illumination System
On input current it is bigger, the brightness of LED illumination System is bigger；Conversely, the brightness of LED illumination System is smaller.
In the prior art, light adjusting system includes the Buck converter group for dimming micro control unit and being controlled by light modulation micro control unit
At, light modulation micro control unit output pwm signal controls Buck converter, so that the output circuit of Buck converter changes, into
And load is adjusted in the size of current of LED illumination System, this dimming mode, electricity of the load in LED illumination System after light modulation
The influence that fluid capacitance is fluctuated vulnerable to input supply voltage, light modulation precision is poor, and is easy to influence the service life of LED illumination System.
In circuit light adjusting circuit of the invention, the pwm signal of light modulation micro control unit output is converted into electricity by integrating circuit
Pressure signal, which is exported, dims chip U1 to PWM, wherein powers on the reference voltage signal Vref in 5S and is stored in PWM light modulation chip U1
Interior, the PWM that type selecting is MV1011 dims chip U1, and the current value of chip select terminal CS is related to reference voltage signal Vref, integral
The reference end REF of the voltage signal connection MV1011 of circuit conversion, MV1011 is according to the received voltage signal of reference end REF and its
The current signal of chip select terminal CS determines the pwm signal of the conducting dutycycle of control N-type metal-oxide-semiconductor Q4.It is designed with this, regardless of input electricity
Whether source voltage is stirred, and is the constant current value after light modulation by current value of the N-type metal-oxide-semiconductor Q4 load in LED illumination System.
As a further improvement of the present invention, above-mentioned light modulation micro control unit includes light modulation start-up circuit, above-mentioned light modulation starting
Circuit accesses above-mentioned input power for controlling LED illumination System, or control disconnects in LED illumination System and input power；
Specifically, above-mentioned light modulation start-up circuit includes one Q1 of relay K and triode, and in the present embodiment technical solution, above-mentioned triode
It is preferable to use NPN type triode, there is relay K one Q1 normally opened contact K1, normally opened contact K1 to be connected on LED illumination System and defeated
Enter between power supply；DC power supply VDD, emitter ground connection are connected after one Q1 collector connection relay K of triode, base stage connects
The start end ON for dimming micro control unit is connected to after meeting base resistance Rb1.
When dimming the start end ON output high level of micro control unit, one Q1 of triode conducting, the normally open contact K1 of relay
It closes, LED illumination System accesses above-mentioned input power；Conversely, one Q1 of triode is closed when start end ON exports low level, after
The normally open contact K1 of electric appliance is disconnected, and LED illumination System and input power disconnect.Come soft start or the light modulation of soft closing circuit with this
Circuit.
Further, it further includes start-up circuit that above-mentioned pwm signal, which turns electric current dimming unit, and above-mentioned start-up circuit is connected to
It states between input power and PWM light modulation chip U1；Above-mentioned start-up circuit includes two Q2 of triode, voltage-stabiliser tube TVS, the present embodiment skill
In art scheme, it is preferable to use NPN type triodes by above-mentioned two Q2 of triode；The collector connection collector electricity of above-mentioned two Q2 of triode
Above-mentioned input power is connected after resistance Rc2, emitter connects the power input VIN of PWM light modulation chip U1, and emitter also connects
Ground；Its base stage connects the cathode of voltage-stabiliser tube TVS, and the cathode of voltage-stabiliser tube TVS is also connected with above-mentioned input power, and voltage-stabiliser tube TVS is just
Pole ground connection.After light modulation start-up circuit soft start circuit light adjusting circuit, two Q2 of triode conducting, PWM dims chip U1 and enters
Operating mode；Otherwise PWM light modulation chip U1 enters low-power consumption mode, and the Working mould of soft start PWM light modulation chip U1 is conducive to this
Formula.
On the other hand, after light modulation voltage-stabiliser tube TVS starts circuit light adjusting circuit, the transmitting of two Q2 of triode is extremely stable defeated
The voltage of 100V out, it is ensured that PWM dims chip U1 and stablizes starting.
More than, elaborate that circuit light adjusting circuit of the present invention is applied to the circuit light modulation of LED module in intelligent illuminating system, this
The circuit light adjusting circuit of invention be applied to intelligent illuminating system in LED module circuit light when, hardware configuration is same as above, and its work
Make principle also ibid to describe, specifically implements difference and be that dimming micro control unit and PWM dims the specific programming of chip U1 not
Together.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of circuit light adjusting circuit for intelligent lighting, is connected between input power and LED illumination System, feature exists
In: turn electric current dimming unit including voltage monitoring unit, light modulation micro control unit and pwm signal；
The voltage monitoring unit, for monitoring the input voltage of the input power；
The light modulation micro control unit turns electric current tune for controlling the pwm signal according to the output of the changing value of the input voltage
The pwm signal of light unit；
The pwm signal turns electric current dimming unit, for being loaded according to pwm signal adjustment in the LED illumination System
Input current.
2. being used for the circuit light adjusting circuit of intelligent lighting as described in claim 1, it is characterised in that: the pwm signal turns electricity
Stream dimming unit includes PWM light modulation chip (U1), resistance five (R5), resistance six (R6), metal-oxide-semiconductor (Q4)；
The gate output end (GATE) of grid connection PWM light modulation chip (U1) of the metal-oxide-semiconductor (Q4), drain electrode connection inductance
(L) LED illumination System is connected afterwards, and source electrode connects the chip select terminal (CS) that resistance six (R6) connects PWM light modulation chip (U1) afterwards；
The source electrode of the metal-oxide-semiconductor (Q4) is also connected with resistance five (R5) and is grounded afterwards, and source electrode is also connected with the LED control of light modulation micro control unit
End (LEDV) processed；
The reference end (REF) of PWM light modulation chip (U1) connects the light modulation micro control unit.
3. being used for the circuit light adjusting circuit of intelligent lighting as claimed in claim 2, it is characterised in that: the pwm signal turns electricity
Flowing dimming unit further includes integrating circuit, and the integrating circuit is connected to reference end (REF) and the light modulation of PWM light modulation chip (U1)
Between micro control unit, dimmed for the pwm signal of the light modulation micro control unit output to be converted into exporting after voltage signal to PWM
The reference end (REF) of chip (U1)；
The integrating circuit includes resistance three (R3), resistance four (R4), capacitor one (C1) and capacitor two (C2)；The resistance three
(R3) it is connected between the reference end (REF) and power end (VCC) of PWM light modulation chip (U1) with resistance four (R4)；Capacitor one
(C1) one end is grounded, and the other end connects the node B between resistance four (R4) and (REF)；The one end (C2) of capacitor two ground connection is another
One end connects the node A between resistance three (R3) and resistance four (R4).
4. being used for the circuit light adjusting circuit of intelligent lighting as claimed in claim 2, it is characterised in that: the pwm signal turns electricity
It flows dimming unit triode three (Q3)；Connection dims micro control unit afterwards for base stage connection base resistance (Rb3) of triode three (Q3)
PWM output end, grounded collector, emitter connect emitter resistance (Re3) afterwards connect PWM light modulation chip (U1) electricity
Source (VCC).
5. being used for the circuit light adjusting circuit of intelligent lighting as claimed in claim 2, it is characterised in that: the pwm signal turns electricity
Flowing dimming unit further includes start-up circuit, and the start-up circuit is connected between the input power and PWM light modulation chip (U1)；
The start-up circuit includes triode two (Q2), voltage-stabiliser tube (TVS)；The collector connection collector electricity of the triode two (Q2)
Resistance (Rc2) connects the input power afterwards, and emitter connects the power input (VIN) of PWM light modulation chip (U1), transmitting
Pole is also grounded；Its base stage connects the cathode of voltage-stabiliser tube (TVS), and the cathode of voltage-stabiliser tube (TVS) is also connected with the input power, pressure stabilizing
Manage the plus earth of (TVS).
6. being used for the circuit light adjusting circuit of intelligent lighting as described in claim 1, it is characterised in that: the light modulation micro control unit
Including dimming start-up circuit, the light modulation start-up circuit accesses the input power, or control for controlling LED illumination System
It disconnects in LED illumination System and input power；
The light modulation start-up circuit includes relay (K) and triode one (Q1), and relay (K) has normally opened contact (K1), often
Contact (K1) is opened to be connected between LED illumination System and input power；Connect after triode one (Q1) collector connection relay (K)
It connects DC power supply (VDD), emitter ground connection is connected to opening for light modulation micro control unit after base stage connection base resistance (Rb1)
Moved end (ON).
7. being used for the circuit light adjusting circuit of intelligent lighting as described in claim 1, it is characterised in that: the voltage monitoring unit
Including resistance one (R1) and resistance two (R2), resistance one (R1) and resistance two (R2) are connected between input power and ground, described
Dim the node C between voltage acquisition end (LV) connection resistance one (R1) of micro control unit and resistance two (R2).
8. being used for the circuit light adjusting circuit of intelligent lighting as claimed in claim 6, it is characterised in that: the triode one (Q1)
For NPN type triode, triode two (Q2) is NPN type triode, triode three (Q3) PNP type triode.
9. being used for the circuit light adjusting circuit of intelligent lighting as claimed in claim 2, it is characterised in that: the metal-oxide-semiconductor is N-type
Metal-oxide-semiconductor.
10. being used for the circuit light adjusting circuit of intelligent lighting as claimed in claim 2, it is characterised in that: the PWM dims chip
(U1) model MV1011.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811367563.9A CN109309993B (en) | 2018-11-16 | 2018-11-16 | Loop dimming circuit for intelligent illumination |
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|---|---|---|---|
| CN201811367563.9A CN109309993B (en) | 2018-11-16 | 2018-11-16 | Loop dimming circuit for intelligent illumination |
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| CN109309993B CN109309993B (en) | 2024-02-27 |
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