CN108966459A - A kind of intelligent dimming control circuit and system - Google Patents
A kind of intelligent dimming control circuit and system Download PDFInfo
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- CN108966459A CN108966459A CN201810847689.XA CN201810847689A CN108966459A CN 108966459 A CN108966459 A CN 108966459A CN 201810847689 A CN201810847689 A CN 201810847689A CN 108966459 A CN108966459 A CN 108966459A
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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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- 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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- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
In a kind of intelligent dimming control circuit provided in an embodiment of the present invention, the intelligent dimming control circuit and AC power source, first display device and the connection of the second display device, the first d. c. voltage signal and the second d. c. voltage signal powered respectively to the first display device and the second display device are converted to by the direct current signal that power conversion module exports rectification module, control module is according to the first constant-current driven module and second the first feedback signal of constant-current driven module and the second feedback signal output voltage adjustment signal so that the first d. c. voltage signal and the second d. c. voltage signal is adjusted in power conversion module, it realizes by being powered and dimming in lamps and lanterns of the adjusting control circuit to different voltages, it solves in existing light application, a set of lighting control circuit can only the lamps and lanterns to single voltage individually controlled System output, so that the problem of increasing design cost in the application scenarios of multiple lamps and lanterns.
Description
Technical field
The invention belongs to lighting technical field more particularly to a kind of intelligent dimming control circuits and system.
Background technique
Tunable optical lamps and lanterns can provide different lighting demands as a kind of emerging product for people, in existing LED intelligence
In illuminator, generallys use assorted lamp bead and form lamp group, assorted lamp bead shows that different light is imitated according to different instructions
Fruit.
However, a set of lighting control circuit can only carry out the lamps and lanterns of single voltage independent in the application of existing light
Control output, so that increasing design cost in the application scenarios of multiple lamps and lanterns.
Summary of the invention
The present invention provides a kind of intelligent dimming control circuit and system, solves in existing light application, a set of light
Control circuit can only carry out individually control output to the lamps and lanterns of single voltage, so that increasing in the application scenarios of multiple lamps and lanterns
The problem of design cost.
The embodiment of the invention provides a kind of intelligent dimming control circuits, with AC power source, the first display device and
The connection of two display devices, the intelligent dimming control circuit includes: to connect with AC power source, for exporting to the AC power source
AC signal rectified, and export the rectification module of direct current signal；With the rectification module, first display device with
And second display device connection, for receiving the direct current signal, and export the to power to first display device
The power conversion module of one d. c. voltage signal and the second d. c. voltage signal to second display device power supply；With it is described
The connection of first display device, is sampled for the output signal to first display device and is obtained the first sampled signal,
The first constant-current driven module of the first feedback signal is exported according to first sampled signal；Connect with second display device
It connects, the second sampled signal is sampled and obtained for the output signal to second display device, adopted according to described second
Sample signal exports the second constant-current driven module of the second feedback signal；And with first constant-current driven module, described second
Constant-current driven module and power conversion module connection, for according to first feedback signal and/or the second feedback letter
Number to the power conversion module send voltage adjustment signal control module.
The embodiment of the present invention also proposed a kind of intelligent dimming control system, and the intelligent dimming control system includes exchange
Power supply, the first display device, the second display device and intelligent dimming control circuit as described in any one of the above embodiments.
Optionally, first display device includes feux rouges lamp group, green light lamp group and blue light lamp group；The feux rouges lamp group
First end, the first end of the first end of the green light lamp group and the blue light lamp group and the power conversion module
One DC voltage signal output end connects altogether, the first input of the second end of the feux rouges lamp group and first constant-current driven module
End connection, the green light lamp group connect with the second input terminal of first constant-current driven module, the blue light lamp group with it is described
The third input terminal of first constant-current driven module connects；
Second display device includes: white light lamp group and yellow light lamp group；The first end of the white light lamp group and the Huang
The first end of light lamp group is connect with the second d. c. voltage signal output end of the power conversion module, and the of the white light lamp group
Two ends are connect with the first input end of second constant-current driven module, the second end of the yellow light lamp group and second constant current
Second input terminal of drive module connects.
In a kind of intelligent dimming control circuit provided in an embodiment of the present invention, the intelligent dimming control circuit with exchange
Power supply, the first display device and the connection of the second display device, the alternating current that AC power source is exported by rectification module into
Row rectification obtains direct current signal, and power conversion module receives direct current signal and carries out being converted to the first direct current to the direct current signal
Voltage signal and the second d. c. voltage signal respectively power to the first display device and the second display device, and the first constant current drives mould
Block and the second constant-current driven module obtain the first feedback according to the signal that the first display device and the second display device export respectively
Signal and the second feedback signal, control module according to the first feedback signal and the second feedback signal output voltage adjustment signal so that
The first d. c. voltage signal and the second d. c. voltage signal is adjusted in power conversion module, realizes by brightness adjustment control
Circuit is powered and dims to the lamps and lanterns of different voltages, solves in existing light application, a set of lighting control circuit is only
The lamps and lanterns of single voltage can be carried out with individually control output, so that increasing design cost in the application scenarios of multiple lamps and lanterns
Problem.
Detailed description of the invention
Fig. 1 is a kind of modular structure schematic diagram of intelligent dimming control circuit provided in an embodiment of the present invention；
Fig. 2 is the first electrical block diagram of the first constant-current driven module provided in an embodiment of the present invention；
Fig. 3 is the first electrical block diagram of the second constant-current driven module provided in an embodiment of the present invention；
Fig. 4 is the second circuit structural schematic diagram of the first constant-current driven module provided in an embodiment of the present invention；
Fig. 5 is the second circuit structural schematic diagram of the second constant-current driven module provided in an embodiment of the present invention；
Fig. 6 is the electrical block diagram of the first sample detecting unit in the embodiment of the present invention；
Fig. 7 is the electrical block diagram of the second sample detecting unit in the embodiment of the present invention；
Fig. 8 is the electrical block diagram of the third sample detecting unit in the embodiment of the present invention；
Fig. 9 is the electrical block diagram of the 4th sample detecting unit in the embodiment of the present invention；
Figure 10 is the electrical block diagram of the 5th sample detecting unit in the embodiment of the present invention；
Figure 11 is the structural schematic diagram of the first register cell in the embodiment of the present invention；
Figure 12 is the structural schematic diagram of the second register cell in the embodiment of the present invention；
Figure 13 is the cellular construction schematic diagram of the power conversion module in the embodiment of the present invention；
Figure 14 is the electrical block diagram of the signal decomposition unit in the embodiment of the present invention；
Figure 15 is the electrical block diagram of the pulsewidth modulation converting unit in the embodiment of the present invention；
Figure 16 is that the signal decomposition unit in the embodiment of the present invention carries out signal to the voltage adjustment signal that input terminal inputs
The signal graph of decomposition；
Figure 17 is the electrical block diagram of the pwm switch unit in the embodiment of the present invention；
Figure 18 is the electrical block diagram of the control module in the embodiment of the present invention；
Figure 19 is the electrical block diagram of the first display device and the second display device in the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.Meanwhile in the description of the present invention, term " first ", " second " etc. are only used for distinguishing description, without
It can be interpreted as indication or suggestion relative importance.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " instruction is described special
Sign, entirety, step, operation, the presence of element and/or component, but be not precluded one or more of the other feature, entirety, step,
Operation, the presence or addition of element, component and/or its set.
It is also understood that mesh of the term used in this present specification merely for the sake of description specific embodiment
And be not intended to limit the application.As present specification and it is used in the attached claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singular, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in present specification and the appended claims is
Refer to any combination and all possible combinations of one or more of associated item listed, and including these combinations.
In order to illustrate the above-mentioned technical solution of the application, the following is a description of specific embodiments.
Fig. 1 is a kind of first modular structure schematic diagram of intelligent dimming control circuit provided in an embodiment of the present invention, such as Fig. 1
It is shown, one of the present embodiment intelligent dimming control circuit and AC power source 10, the first display device 410 and the second display
Device 420 connects, which includes: to connect with AC power source 10, for being rectified to the AC signal of input,
And export the rectification module 20 of direct current signal；Connect with rectification module 20, the first display device 410 and the second display device 420
It connects, for receiving direct current signal, and exports the first d. c. voltage signal for power to the first display device 410 and be used for pair
The power conversion module 30 of second d. c. voltage signal of the second display device 420 power supply；It is connect with the first display device 410,
The first sampled signal is sampled and obtained for the output signal to the first display device 410, according to first sampled signal
Export the first constant-current driven module 551 of the first feedback signal；It is connect with the second display device 420, for being filled to the second display
It sets 420 and is sampled and obtained the second sampled signal, driven according to the second constant current that the second sampled signal exports the second feedback signal
Dynamic model block 552；And it is connect with the first constant-current driven module 551, the second constant-current driven module 552 and power conversion module 30
Connection, for sending voltage adjustment signal to power conversion module 30 according to the first feedback signal and/or the second feedback signal
Control module 30.
In the present embodiment, the direct current signal that power conversion module 30 exports rectification module 20 carries out processing output first
D. c. voltage signal and the second d. c. voltage signal are respectively powered the first display device 410 and the second display device 420,
First constant-current driven module 551 samples each lamp group in the first display device 410, and according to the signal of sampling to control
Molding block 60 exports the first feedback signal, and the second constant-current driven module 552 carries out each lamp group in the second display device 420
Sampling, and the second feedback signal is started to control module 60 according to the signal of sampling, control module 60 is according to the first feedback signal
It feeds back with second to power conversion module 30 and sends first direct current of the voltage adjustment signal to control power conversion module to output
Voltage signal and the second d. c. voltage signal are adjusted.
As an embodiment of the present invention, control module 60 is also used to send to the first constant-current driven module 551 for controlling
First pulse-width modulation control signal of the opening and closing of each lamp group in the first display device 410 and for first show
The first logic control signal that the output voltage of each lamp group in device 410 is sampled and detected, and to the second constant current
Drive module 552 sends the second pulsewidth modulation of the opening and closing for controlling each lamp group in the second display device 420
Control signal and the second logic for being sampled and being detected for the output voltage to each lamp group in the second display device 420
Control signal.
As an embodiment of the present invention, in the present embodiment, the first d. c. voltage signal that power conversion module 30 exports
For low-voltage dc signal, the second d. c. voltage signal that power conversion module 30 exports is high-voltage dc signal, can satisfy height
The power supply of lamp group and low pressure lamp group is pressed to need.
As an embodiment of the present invention, Fig. 2 is the first electricity of the first constant-current driven module 551 provided in an embodiment of the present invention
Line structure schematic diagram, as shown in Fig. 2, in the present embodiment, the first constant-current driven module 551 include: the first operational amplifier U1,
Second operational amplifier U2, third operational amplifier U3, first switch tube M1, second switch M2, third switching tube M3, first
Resistance unit 501, second resistance unit 502,3rd resistor unit 503；And the first pulsewidth modulation control with control module 60
Signal output end connection processed, for exporting the first pulse-width signal, the second pulsewidth tune according to the first pulse-width modulation control signal
The pulse width modulation controlled unit 511 of signal processed and third pulse-width signal.Specifically, the electric current of first switch tube M1 inputs
End is connect as the first input end of constant-current driven module 551 with the first output end OUT1 of the first display device 410, and second opens
The current input terminal of pipe M2 is closed as the second input terminal of constant-current driven module 551 and the second output of the first display device 410
Hold OUT2 connection, third input terminal and first of the current input terminal of third switching tube M3 as the first constant-current driven module 551
The third output end OUT3 connection of display device 410, the output of the control terminal of first switch tube M1 and the first operational amplifier U1
End connection, the control terminal of second switch M2 are connect with the output end of second operational amplifier U2, the control of third switching tube M3
End connect with the output end of third operational amplifier U3, the second input terminal of the first operational amplifier U1, first switch tube M1
The first end of current output terminal and first resistor unit 501 connects altogether, the second end ground connection of first resistor unit 501, the second fortune
The first end for calculating the second input terminal of amplifier U2, the current output terminal of second switch M2 and second resistance unit 502 is total
It connects, the second end of second resistance unit 502 ground connection, the electricity of the second input terminal of third operational amplifier U3, third switching tube M3
The first end of stream output end and 3rd resistor unit 503 connects altogether, the second end ground connection of 3rd resistor unit 503, the first operation
The first input end of amplifier U1 is connect with the first output end of pulse width modulation controlled unit 511, second operational amplifier U2's
First input end is connect with the second output terminal of pulse width modulation controlled unit 511, the first input end of third operational amplifier U3
It is connect with the third input terminal of pulse width modulation controlled unit 511.
As an embodiment of the present invention, operational amplifier, switching tube and the resistance list in the first constant-current driven module 551
The number of member is determined according to the number of the lamp group in the first display device 410.
As an embodiment of the present invention, first resistor unit 501, second resistance unit 502,3rd resistor unit 503 can
To be resistance, in the present embodiment, first resistor unit 501, second resistance unit 502,3rd resistor unit 503 are respectively
Resistance R1, resistance R2 and resistance R3, first end of the resistance R1 first end as first resistor unit 501, the second of resistance R1
Hold the second end as first resistor unit 501, first end of the first end of resistance R2 as second resistance unit 502, resistance
Second end of the second end of R2 as second resistance unit 502, the first end of resistance R3 as 3rd resistor unit 503 first
End, second end of the second end of resistance R3 as 3rd resistor unit 503.
As an embodiment of the present invention, first switch tube M1, second switch M2 and third switching tube M3 are N-type
Metal-oxide-semiconductor, specifically, control of the grid of N-type metal-oxide-semiconductor as first switch tube M1, second switch M2 and third switching tube M3
End processed, N-type metal-oxide-semiconductor drain as first switch tube M1, second switch M2 and the current input terminal of third switching tube M3,
The source electrode of N-type metal-oxide-semiconductor is as first switch tube M1, second switch M2 and the current output terminal of third switching tube M3.
As an embodiment of the present invention, Fig. 3 is the second electricity of the second constant-current driven module 552 provided in an embodiment of the present invention
Line structure schematic diagram, as shown in figure 3, the second constant-current driven module 552 includes: four-operational amplifier U4, the 5th operation amplifier
Device U5, the 4th switching tube M4, the 5th switching tube M5, the 4th resistance unit 504, the 5th resistance unit 505；And and control module
60 the second pulse-width modulation control signal output end connection, for exporting the 4th pulsewidth tune according to the second pulse-width modulation control signal
Second pulse width modulation controlled unit 512 of signal processed, the 5th pulse-width signal；Specifically, the electric current of the 4th switching tube M4 is defeated
Enter first input end of the end as the second constant-current driven module 552, the current input terminal of the 5th switching tube M5 is as the second constant current
Second input terminal of drive module 552, the control terminal of the 4th switching tube M4 are connect with the output end of four-operational amplifier U4, the
The control terminal of five switching tube M5 is connect with the output end of the 5th operational amplifier U5, the second input of four-operational amplifier U4
The first end at end, the current output terminal of the 4th switching tube M4 and the 4th resistance unit 504 connects altogether, the 4th resistance unit 504
Second end ground connection, the current output terminal and the 5th resistance of the second input terminal of the 5th operational amplifier U5, the 5th switching tube M5
The first end of unit 505 connects altogether, the second end ground connection of the 5th resistance unit 505, the first input end of four-operational amplifier U4
It is connect with the first output end of the second pulse width modulation controlled unit 512, the first input end and second of the 5th operational amplifier U5
The second output terminal of pulse width modulation controlled unit 512 connects.
As an embodiment of the present invention, the 4th switching tube M4 and the 5th switching tube M5 is N-type metal-oxide-semiconductor, specifically, N-type
Control terminal of the grid of metal-oxide-semiconductor as the 4th switching tube M4 and the 5th switching tube M5, the drain electrode of N-type metal-oxide-semiconductor is as the 4th switch
The current input terminal of pipe M4 and the 5th switching tube M5, the source electrode of N-type metal-oxide-semiconductor is as the 4th switching tube M4's and the 5th switching tube M5
Current output terminal.
As an embodiment of the present invention, as shown in figure 3, the 4th resistance unit 504, the 5th resistance unit 505 are respectively electricity
R4, resistance R5 are hindered, first end of the resistance R4 first end as the 4th resistance unit 504, the second end of resistance R4 is as the 4th electricity
The second end of unit 504 is hindered, the second end of first end of the first end of resistance R5 as the 5th resistance unit 505, resistance R5 is made
For the second end of the 5th resistance unit 505.
As an embodiment of the present invention, Fig. 4 is the second electricity of the first constant-current driven module 551 provided in an embodiment of the present invention
Line structure schematic diagram, as shown in figure 4, in the present embodiment, the first constant-current driven module 551 further include: with control module 60
The connection of first logic control signal output end, the enabled control of logic control signal output first for being exported according to control module 60
Signal processed, second make to can control signal, third makes to can control signal and the 4th makes the first logic control list that can control signal
Member 520；It is connect with the first output end of the first logic control element 520, it is defeated for first to the first constant-current driven module 551
Enter end and carry out signal sampling to obtain the first sampled signal, and makes to can control signal output the according to the first sampled signal and first
First sample detecting unit 521 of one logical signal and the first data-signal；With the second output of the first logic control element 520
End connection carries out signal sampling for the second input terminal to the first constant-current driven module 551 and obtains the second sampled signal, and root
Make the second sampling inspection that can control signal the second logical signal of output and the second data-signal according to the second sampled signal and second
Survey unit 522；It is connect with the third output end of the first logic control element 520, for the first constant-current driven module 551
Three input terminals carry out signal sampling and obtain third sampled signal, and according to third sampled signal and third make to can control signal defeated
The third sample detecting unit 523 of third logical signal and third data-signal out；And respectively with the first sample detecting unit
521, the second sample detecting unit 522, third sample detecting unit 523 connect, for according to the first logical signal, the first data
Signal, the second logical signal, the second data-signal, third logical signal, third data-signal, the 4th logical signal and the 4th
Data-signal exports the first register cell 530 of the first feedback signal.
As an embodiment of the present invention, the sample detecting unit that the first constant-current driven module 551 in the present embodiment includes
It can be determined according to the lamp group number in the first display device 410.
As an embodiment of the present invention, Fig. 5 is the second electricity of the second constant-current driven module 552 provided in an embodiment of the present invention
Line structure schematic diagram, as shown in figure 5, in the present embodiment, the second constant-current driven module 552 includes: with control module 60
The connection of two logic control signal output ends makes for making to can control signal and the 5th according to the second logic control signal output the 4th
It can control the second logic control element 524 of signal；Connect with the first output end of the second logic control element 524, for pair
The first input end of second constant-current driven module 552 carries out signal sampling and obtains the 4th sampled signal, and is believed according to the 4th sampling
Number and the 4th make to can control the 4th sample detecting unit 525 that signal exports the 4th logical signal and the 4th data-signal；With
The second output terminal of second logic control element 524 connects, and carries out for the second input terminal to the second constant-current driven module 552
Signal sampling obtains the 5th sampled signal, and is made to can control signal output the 5th logic letter according to the 5th sampled signal and the 5th
Number and the 5th data-signal the 5th sample detecting unit 526；And it is sampled respectively with the 4th sample detecting unit 525 and the 5th
Detection unit 526 connects, for being believed according to the 4th logical signal, the 4th data-signal, the 5th logical signal and the 5th data
Number output the second feedback signal the first register cell 530.
As an embodiment of the present invention, Fig. 6 is the circuit structure of the first sample detecting unit 521 in the embodiment of the present invention
Schematic diagram, as shown in fig. 6, in the present embodiment, the first sample detecting unit 521 includes: the 11st comparator U11, the 12nd
Comparator U12, the first XOR gate XOR1, first and door AND1, the 11st tri-state gate T11 and the 12nd tri-state gate T11.Specifically
, the first input end of the 11st comparator U11, the first input end of the 12nd comparator U12 and the first display device 410
The first output end OUT1 connect altogether, the second input terminal of the 11st comparator U11 and the 11st preset reference voltage source V11 connect
It connects, the second input terminal of the 12nd comparator U12 is connect with the 12nd preset reference voltage source V12, the 11st comparator U11's
Output end, the first input end of the first XOR gate XOR1, first connect altogether with the first input end of door AND1, the 12nd comparator
The output end of U12, the second input terminal of the first XOR gate XOR1 and first and the second input terminal of door AND1 connect altogether, and first is different
Or the output end of door XOR1 is connect with the input terminal of the 11st tri-state gate T11, the output end and the 12nd of first and door AND1
The input terminal of state door T12 connects, and the control terminal of the 11st tri-state gate T11 and the control terminal of the 12nd tri-state gate T12 connect work altogether
For the first enabled control signal input of the first sample detecting unit 521 and the first output of the first logic control element 520
Hold CH1 connection, the output end of the 11st tri-state gate T11 as the first sample detecting unit 521 logical signal output end with post
First logic signal input end OUT1_CHG connection of storage unit 530, the output end of the 12nd tri-state gate T12 are adopted as first
The logical signal output end of sample detection unit 521 is connect with the first data signal input OUT1_DIR of register cell 530.
As an embodiment of the present invention, Fig. 7 is the circuit structure of the second sample detecting unit 522 in the embodiment of the present invention
Schematic diagram, as shown in fig. 7, in the present embodiment, the second sample detecting unit 522 includes: the 21st comparator U21, second
12 comparator U22, the second XOR gate XOR2, second and door AND2, the 21st tri-state gate T21 and the 22nd tri-state gate
T22.Specifically, the first input end of the first input end of the 21st comparator U21, the 22nd comparator U22 and
The second output terminal OUT2 of one display device 410 connects altogether, and the second input terminal of the 21st comparator U21 and the 22nd is preset
Reference voltage source V21 connection, the second input terminal of the 22nd comparator U12 and the 22nd preset reference voltage source V22 connect
Connect, the output end of the 21st comparator U21, the first input end of the second XOR gate XOR2, second with it is the first of door AND2 defeated
Enter end to connect altogether, the output end of the 22nd comparator U22, the second input terminal of the second XOR gate XOR2 and second and door AND2
The second input terminal connect altogether, the output end of the second XOR gate XOR2 is connect with the input terminal of the 21st tri-state gate T21, second with
The output end of door AND2 is connect with the input terminal of the 22nd tri-state gate T22, the control terminal of the 21st tri-state gate T21 and the
The control terminal of 22 tri-state gate T22 connect altogether the first enabled control signal input as the second sample detecting unit 522 with
The second output terminal CH2 connection of first logic control element 520, the output end of the 21st tri-state gate T21 is as the second sampling
Second logic signal input end OUT2_CHG of the logical signal output end of detection unit 521 and the first register cell 530 connects
It connects, the output end of the 22nd tri-state gate T22 is deposited as the data signal output of the second sample detecting unit 522 and first
Second data signal input OUT2_DIR connection of device unit 530.
As an embodiment of the present invention, Fig. 8 is the circuit structure of the third sample detecting unit 523 in the embodiment of the present invention
Schematic diagram, as shown in figure 8, in the present embodiment, third sample detecting unit 523 includes: the 31st comparator U31, third
12 comparator U32, third XOR gate XOR3, third and door AND3, the 31st tri-state gate T31 and the 32nd tri-state gate
T32.Specifically, the first input end of the first input end of the 31st comparator U31, the 32nd comparator U32 and
The third output end OUT3 of one display device 410 connects altogether, and the second input terminal of the 31st comparator U31 and the 32nd is preset
Reference voltage source V31 connection, the second input terminal of the 32nd comparator U32 and the 32nd preset reference voltage source V32 connect
Connect, the output end of the 31st comparator U31, the first input end of third XOR gate XOR3, third and door AND3 it is first defeated
Enter end to connect altogether, the output end of the 32nd comparator U32, the second input terminal of third XOR gate XOR3 and third and door AND3
The second input terminal connect altogether, the output end of third XOR gate XOR3 is connect with the input terminal of the 31st tri-state gate T31, third with
The output end of door AND3 is connect with the input terminal of the 32nd tri-state gate T32, the control terminal of the 31st tri-state gate T31 and the
The control terminal of 32 tri-state gate T32 connect altogether the first enabled control signal input as third sample detecting unit 523 with
The output end of the third output end CH3 connection of first logic control element 520, the 31st tri-state gate T31 is sampled as third
The third logic signal input end OUT3_CHG of the logical signal output end of detection unit 523 and the first register cell 530 connects
It connects, the output end of the 32nd tri-state gate T32 is deposited as the data signal output of third sample detecting unit 523 and first
The third data signal input OUT3_DIR connection of device unit 530.
As an embodiment of the present invention, Fig. 9 is the circuit structure of the 4th sample detecting unit 524 in the embodiment of the present invention
Schematic diagram, as shown in figure 9, in the present embodiment, the 4th sample detecting unit 524 includes: the 41st comparator U41, the 4th
12 comparator U42, the 4th XOR gate XOR4, the 4th and door AND4, the 41st tri-state gate T41 and the 42nd tri-state gate
T42.Specifically, the first input end of the first input end of the 41st comparator U41, the 42nd comparator U42 and
First output end OUT4 of two display devices 420 connects altogether, and the second input terminal of the 41st comparator U41 and the 42nd is preset
Reference voltage source V41 connection, the second input terminal of the 42nd comparator U42 and the 42nd preset reference voltage source V42 connect
Connect, the output end of the 41st comparator U41, the first input end of the 4th XOR gate XOR4, the 4th with it is the first of door AND4 defeated
Enter end to connect altogether, the output end of the 42nd comparator U42, the second input terminal of the 4th XOR gate XOR4 and the 4th and door AND4
The second input terminal connect altogether, the output end of the 4th XOR gate XOR4 is connect with the input terminal of the 41st tri-state gate T41, the 4th with
The output end of door AND4 is connect with the input terminal of the 42nd tri-state gate T42, the control terminal of the 41st tri-state gate T41 and the
The control terminal of 42 tri-state gate T42 connect altogether the first enabled control signal input as the 4th sample detecting unit 524 with
First output end CH4 connection of the second logic control element 524, the output end of the 41st tri-state gate T41 is as the 4th sampling
First logic signal input end OUT4_CHG of the logical signal output end of detection unit 524 and the second register cell 540 connects
It connects, the output end of the 42nd tri-state gate T42 is deposited as the data signal output of the 4th sample detecting unit 524 and second
First data signal input OUT4_DIR connection of device unit 540.
Figure 10 is the electrical block diagram of the 5th sample detecting unit in the embodiment of the present invention, as shown in Figure 10,
In the present embodiment, the 5th sample detecting unit 525 includes: the 51st comparator U51, the 52nd comparator U52, the 5th different
Or door XOR5, the 5th and door AND5, the 51st tri-state gate T51 and the 52nd tri-state gate T52.Specifically, the 51st
The second of the first input end of comparator U51, the first input end of the 52nd comparator U52 and the second display device 420
Output end OUT5 connects altogether, and the second input terminal of the 51st comparator U51 is connect with the 52nd preset reference voltage source V51,
The second input terminal of 52nd comparator U52 is connect with the 52nd preset reference voltage source V52, the 51st comparator
The output end of U51, the first input end of the 5th XOR gate XOR5, the 5th connect altogether with the first input end of door AND5, and the 52nd
The output end of comparator U52, the second input terminal of the 5th XOR gate XOR5 and the 5th and the second input terminal of door AND5 connect altogether,
The output end of 5th XOR gate XOR5 is connect with the input terminal of the 51st tri-state gate T51, the 5th with the output end of door AND5 with
The input terminal of 52nd tri-state gate T52 connects, the control terminal and the 52nd tri-state gate T52 of the 51st tri-state gate T51
Control terminal connect altogether as the 5th sample detecting unit 524 the first enabled control signal input and the second logic control element
524 second output terminal CH5 connection, logic of the output end of the 51st tri-state gate T51 as the 5th sample detecting unit 526
Signal output end is connect with the second logic signal input end OUT4_CHG of the second register cell 540, the 52nd tri-state gate
The output end of T52 is as the data signal output of the 5th sample detecting unit 526 and the second number of the second register cell 540
According to signal input part OUT4_DIR connection.
As an embodiment of the present invention, Figure 11 is the structural representation of the first register cell 530 in the embodiment of the present invention
Figure, as shown in figure 11, in the present embodiment, the first register cell 530 include: first or door OR1, second or door OR2 and
First register 531.Specifically, the first input end of first or door OR1 is believed as the first logic of the first register cell 530
The second input terminal of number input terminal OUT1_CHG, first or door OR1 are defeated as the second logical signal of the first register cell 530
Enter and holds OUT2_CHG, third logic signal input end of the third input terminal of first or door OR1 as the first register cell 530
First data signal input of the first input end of OUT3_CHG, second or door OR2 as the first register cell 530
Second data signal input of the second input terminal of OUT1_DIR, second or door OR2 as the first register cell 530
Third data signal input of the third input terminal of OUT2_DIR, second or door OR2 as the first register cell 530
OUT3_DIR, the output end of first or door OR1 are connect with the first input end of the first register 531, the output of second or door OR2
End is connect with the second input terminal of the first register 531, and the output end of the first register 531 is as the first register cell 530
Output end for export the first feedback signal.
As an embodiment of the present invention, Figure 12 is the structural schematic diagram of the second register cell in the embodiment of the present invention,
As shown in figure 12, in the present embodiment, the second register cell 540 includes: third or door OR3, the 4th or door OR4 and second
Register 541.Specifically, the first input end of third or door OR3 are defeated as the first logical signal of the second register cell 540
Enter and holds OUT4_CHG, second logic signal input end of the second input terminal of third or door OR3 as the second register cell 540
First data signal input of the first input end of OUT5_CHG, the 4th or door OR4 as the second register cell 540
Second data signal input of the second input terminal of OUT4_DIR, the 4th or door OR4 as the second register cell 540
OUT5_DIR, the output end of the 4th or door OR4 are connect with the first input end of the second register 541, the output of the 5th or door OR5
End is connect with the second input terminal of the second register 541, and the output end of register 541 is as the defeated of the second register cell 540
Outlet is for exporting the second feedback signal.
In the present embodiment, the logical signal Ch1 of the first output end CH1 output of logic control element 520 is for being connected
The first input end OUT1, the 11st preset reference voltage source V11 of constant-current driven module 50 and the 12nd preset reference voltage source
V12 is the reference voltage built in the first sample detecting unit 521, wherein the 11st preset reference voltage source V11 is greater than the tenth
Two preset reference voltage source V12.It is preset when the voltage that the first input end OUT1 of constant-current driven module 50 is inputted is greater than the 11st
When reference voltage source V11 and the 12nd preset reference voltage source V12, at this point, the first input end OUT1 of constant-current driven module 50
Electric current be in constant current state, and the voltage of the port is in superpressure state, it is therefore desirable to reduce the defeated of power conversion module 50
Voltage out, at this point, the OUT1_CHG signal that the logical signal output end of the first sample detecting unit 521 exports is 1, the first sampling
Detection unit 521 data signal output output OUT1_DIR signal be 1, register 531 to received signal at
Reason is reduced the feedback signal of voltage, the voltage adjustment letter which is depressured after being handled by control module 60
Number, the voltage adjustment signal that power conversion module 30 receives decompression carries out decompression processing to the d. c. voltage signal of output.When
The voltage of the first input end OUT1 input of constant-current driven module 50 is pre- lower than the 11st preset reference voltage source V11 and the 12nd
If when reference voltage source V12, at this point, the electric current of the first input end OUT1 of constant-current driven module 50 is in non-constant current state, and
The voltage of the port is in low-pressure state, it is therefore desirable to the output voltage of hoisting power conversion module 30, at this point, the first sampling inspection
The OUT1_CHG signal for surveying the logical signal output end output of unit 521 is 1, the data-signal of the first sample detecting unit 521
The OUT1_DIR signal of output end output is 0, and register 531 handle to received signal the feedback letter for the voltage that gets a promotion
Number, the voltage adjustment signal which is boosted after being handled by control module 60, power conversion module 30 receives
The voltage adjustment signal of promotion carries out boosting processing to the d. c. voltage signal of output.When the first input of constant-current driven module 50
Hold the voltage of OUT1 input lower than the 11st preset reference voltage source V11 and when being greater than the 12nd preset reference voltage source V12, this
When, the electric current of the first input end OUT1 of constant-current driven module 50 is in constant current state, at this point, the first sample detecting unit 521
The OUT1_CHG signal of logical signal output end output be 0, the data signal output of the first sample detecting unit 521 exports
OUT1_DIR signal can be ignored, register 531 is handled to obtain output to received signal and keeps the anti-of voltage
Feedback signal, the feedback signal are maintained after being handled by control module 60 and export constant voltage adjustment signal, i.e. function at this time
The voltage that rate conversion module 30 exports does not need the DC voltage letter exported to power conversion module 30 in predetermined voltage range
It number is adjusted.
In the present embodiment, the working principle and first of the second sample detecting unit 522 and third sample detecting unit 523
The working principle of sample detecting unit 521 is identical, and details are not described herein.
As an embodiment of the present invention, Figure 13 is the cellular construction signal of the power conversion module 30 in the embodiment of the present invention
Figure, as shown in figure 13, the power conversion module 30 in the present embodiment includes: to connect with constant-current driven module 50, for feedback
Signal carries out signal decomposition operation, and exports the signal decomposition unit 310 of the first time delayed signal and the second time delayed signal；With letter
Number decomposition unit 310 connects, for the pulsewidth according to the first time delayed signal and the second time delayed signal output pulse width modulated signal
Modulation conversion unit 320；And connect with pulsewidth modulation converting unit 320, for according to pulse-width signal and direct current signal
Export the pwm switch unit 330 of the first d. c. voltage signal and the second d. c. voltage signal.
As an embodiment of the present invention, Figure 14 is that the circuit structure of the signal decomposition unit 310 in the embodiment of the present invention shows
It is intended to, as shown in figure 14, in the present embodiment, signal decomposition unit 310 includes: the first signal delay device the 311, the 310th
Three comparator U313 and second signal delayer 312, specifically, the input terminal of the first signal delay device 311, the 310th
The second input terminal of three comparator U313 connects altogether to be connect as the input terminal S1 of signal decomposition unit 310 with control module 60, is used
In the voltage adjustment signal for receiving the output of control module 60, the output end of the first signal delay device 311 and the 313rd ratio
First input end connection compared with device U313, the output end of the 313rd comparator U313 is as signal decomposition unit 310
First output end S2 export the first postpones signal, the output end of the 313rd comparator U313 also with second signal delayer
312 input terminal connection, second output terminal S3 of the output end S3 of second signal delayer 312 as signal decomposition unit 310
Export the second postpones signal.
As an embodiment of the present invention, Figure 15 is the circuit knot of the pulsewidth modulation converting unit 320 in the embodiment of the present invention
Structure schematic diagram, as shown in figure 15, in the present embodiment, pulsewidth modulation converting unit 320 includes: first the 323, first electricity of constant-current source
It is opened flat and closes K1, second electrical level switch K2, third level switch K3, the first signal buffer 321, second signal buffer 322, the
One capacitor C1, the second capacitor C2, third capacitor C3 and the 20th comparator U20.Specifically, the first of the first level switch K1
End is connect with the first end of the first constant-current source 323, second end, first end, the third of first capacitor C1 of the first level switch K1
The input terminal of level switch K3 and the first signal buffer 321 connects altogether, the output end of the first signal buffer 321 and the second electricity
It is opened flat the first end connection for closing K2, the second end of second electrical level switch K2, the first end of the second capacitor C2 and second signal are slow
The input terminal for rushing device 322 connects altogether, the second end of the first constant-current source 323, the second end of first capacitor C1, third level switch K3
The second end of second end, the second end of the second capacitor C2 and third capacitor C3 be connected to altogether ground, second signal buffer 322 it is defeated
Outlet is connect with the second input terminal of the 20th comparator U20, and the output end of the 20th comparator U20 is converted as pulsewidth modulation
The output end of unit 320.
In the present embodiment, Figure 16 is that signal decomposition unit 310 carries out letter to the input terminal S1 voltage adjustment signal inputted
Number signal graph decomposed, wherein pulsewidth width means need the signal that adjusts, and as shown in figure 16, voltage adjustment signal passes through first
Signal delay device 311 is delayed, and the delay time of the first signal delay device 311 is t1, and the signal after delay reaches the 300th
The first input end of 13 comparator U313, the first input end be comparator normal phase input end, then with comparator
The signal of negative-phase input input is compared to obtain the first postpones signal, and the first postpones signal passes through second signal delayer
312 are delayed to obtain the second postpones signal, and 312 time of second signal delayer is t2.
As an embodiment of the present invention, pulsewidth modulation converting unit 320 postpones the voltage adjustment signal received, first
Signal and the second postpones signal are converted to pulse-width signal, and the pulse-width signal is for controlling pwm switch unit
In pwm switch, specifically, when signal decomposition unit 310 the received voltage adjustment signal of input terminal S1 be high level
When, which controls the first level switch K1 and closes, and the first constant-current source 323 charges to first capacitor C1, the
Voltage linear at the second end A of one level switch K1 rises, and when voltage adjustment signal is low level signal, the first level is opened
It closes K1 to disconnect, at this point, the second postpones signal increases position high level signal, which controls second electrical level switch K2 and close
It closes, the second capacitor C2 charging, the voltage at the second end A of the first level switch K1 is Va, and the second postpones signal is reduced to low level
Signal, when third postpones signal is high level, first capacitor C1 electric discharge.
As an embodiment of the present invention, Figure 17 is the circuit knot of the pwm switch unit 330 in the embodiment of the present invention
Structure schematic diagram, as shown in figure 17, the pwm switch unit 330 in the present embodiment include: pwm switch 331, first
Transformer T1, the 4th diode D4, the 5th diode D5, the 5th capacitor C5 and the 6th capacitor C6.Specifically, the first transformer
The first input end of T1 is connect with the output end of rectification module 20, and the first end of pwm switch 331 and pulsewidth modulation are converted
The output end of unit 320 connects, and the second end of pwm switch 331 is connect with the second input terminal of the first transformer T1, the
The first cathode output end of one transformer T1 is connect with the anode of the 4th diode D4, the cathode of the 4th diode D4 and the 5th electricity
The first end for holding C5 connects the first d. c. voltage signal output end as power conversion module 30 altogether, and the second of the first transformer T1
Cathode output end is connect with the anode of the 5th diode D5, and the first end of the cathode and the 6th capacitor C6 of the 5th diode D5 connects altogether
As the second d. c. voltage signal output end of power conversion module 30, the first cathode output end of the first transformer T1, the 5th
The second end of the second end of capacitor C5, the second cathode output end of the first transformer T1 and the 6th capacitor C6 is connected to ground altogether.
As an embodiment of the present invention, Figure 18 is the electrical block diagram of the control module 60 in the embodiment of the present invention,
As shown in figure 18, in the present embodiment, control module 60 includes communication unit 610 and microprocessor unit 620, microprocessor
Unit 620 receives the manipulation instruction that user sends by communication unit 610, and according to the manipulation instruction to power conversion module 30
And constant-current driven module sends and adjusts control signal.
In the present embodiment, communication unit 610 can be bluetooth or signal antenna.Microprocessor unit 620 can be
Central processing unit (Central Processing Unit, CPU), which can also be other general processors, number
Signal processor (Digital Signal Processor, DSP), specific integrated circuit (Application Specific
Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA)
Either other programmable logic device, discrete gate or transistor logic, discrete hardware components etc..Microprocessor unit
620 for sending the first pulse-width signal and the second pulse-width signal to constant-current driven module 50 to control the first display dress
Set the opening and closing of 410 and the second lamp group in display device 420, and the first feedback exported according to constant-current driven module 50
Signal and the second feedback signal obtain voltage adjustment signal, and the voltage adjustment signal is sent to power conversion module 30 to adjust
Save the first d. c. voltage signal and the second d. c. voltage signal of power conversion module output.
As an embodiment of the present invention, a kind of adjustable dimming control system of voltage, the light modulation are proposed in the present embodiment
Control system includes display device 40 and the adjusting control circuit such as any of the above-described embodiment.
As an embodiment of the present invention, Figure 19 is the first display device 410 and the second display dress in the embodiment of the present invention
Set 420 electrical block diagram, as shown in figure 19, the first display device 410 in the present embodiment include feux rouges lamp group 401,
Green light lamp group 402, blue light lamp group 403；The first end of feux rouges lamp group 401, the first end of green light lamp group 402 and blue light lamp group
403 first end and the first d. c. voltage signal output end of power conversion module 30 connect altogether, the second of feux rouges lamp group 401
End is connect with the first input end of constant-current driven module 50, and the second input terminal of green light lamp group 402 and constant-current driven module 50 connects
It connects, blue light lamp group 403 is connect with the third input terminal of constant-current driven module 50.
As shown in figure 19, the second display device 420 includes white light lamp group 404 and yellow light lamp group 405；White light lamp group 404
First end is connect with the second d. c. voltage signal output end of power conversion module 30, the first end and power of yellow light lamp group 405
Second d. c. voltage signal output end of conversion module 30 connects, the second end of white light lamp group 404 and the second constant-current driven module
552 first input end connection, the second end of yellow light lamp group 405 are connect with the second input terminal of the second constant-current driven module 552.
In the present embodiment, by inputting lower to feux rouges lamp group 401, green light lamp group 402 and blue light lamp group 403
One d. c. voltage signal inputs higher second d. c. voltage signal to white light lamp group 404, utilizes feux rouges lamp group 401, green light lamp
Group 402 and the lamp bead characteristic different from white light lamp group 404 of blue light lamp group 403, the power-efficient of raising display device 40, when white
Light lamp group 404 is as main light source in use, setting high voltage signal, increase white light lamp group 404 for the second d. c. voltage signal
Driving voltage, allow user to make full use of the characteristics of luminescence of white light, increase the cost performance of display device 40.
In the present embodiment, in order to can driving voltage to each lamp group be freely combined and apply according to user, can will
First switch tube M1, second switch M2, third switching tube M3 and the 4th switching tube M4 in constant-current driven module are set as
High-voltage MOS pipe avoids burning out constant-current driven module 50 when to lamp group using high drive.
In a kind of intelligent dimming control circuit provided in an embodiment of the present invention, the intelligent dimming control circuit with exchange
Power supply, the first display device and the connection of the second display device, the alternating current that AC power source is exported by rectification module into
Row rectification obtains direct current signal, and power conversion module receives direct current signal and carries out being converted to the first direct current to the direct current signal
Voltage signal and the second d. c. voltage signal respectively power to the first display device and the second display device, and the first constant current drives mould
Block and the second constant-current driven module obtain the first feedback according to the signal that the first display device and the second display device export respectively
Signal and the second feedback signal, control module according to the first feedback signal and the second feedback signal output voltage adjustment signal so that
The first d. c. voltage signal and the second d. c. voltage signal is adjusted in power conversion module, realizes by brightness adjustment control
Circuit is powered and dims to the lamps and lanterns of different voltages, solves in existing light application, a set of lighting control circuit is only
The lamps and lanterns of single voltage can be carried out with individually control output, so that increasing design cost in the application scenarios of multiple lamps and lanterns
Problem.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of intelligent dimming control circuit is connect, feature with AC power source, the first display device and the second display device
It is, the intelligent dimming control circuit includes:
It is connect with AC power source, for rectifying to the AC signal of input, and exports the rectification module of direct current signal；
It is connect with the rectification module, first display device and second display device, for receiving the direct current
Signal, and export the first d. c. voltage signal for powering to first display device and filled for being shown to described second
Set the power conversion module of the second d. c. voltage signal of power supply；
It is connect with first display device, sampled for the output signal to first display device and obtains first
Sampled signal exports the first constant-current driven module of the first feedback signal according to first sampled signal；
It is connect with second display device, sampled for the output signal to second display device and obtains second
Sampled signal exports the second constant-current driven module of the second feedback signal according to second sampled signal；And
It connect, is used for first constant-current driven module, second constant-current driven module and the power conversion module
The control of voltage adjustment signal is sent to the power conversion module according to first feedback signal and/or the second feedback signal
Module.
2. intelligent dimming control circuit as described in claim 1, which is characterized in that first constant-current driven module includes:
First operational amplifier, second operational amplifier, third operational amplifier, first switch tube, second switch, third switch
Pipe, first resistor unit, second resistance unit, 3rd resistor unit；And
It is connect with the first pulse-width modulation control signal output end of the control module, for what is exported according to the control module
First pulse-width modulation control signal exports the first pulse-width signal, the second pulse-width signal and third pulse-width signal
The first pulse width modulation controlled unit；
First input end of the current input terminal of the first switch tube as the constant-current driven module, the second switch
Second input terminal of the current input terminal as the constant-current driven module, the current input terminal of the third switching tube is as institute
State the third input terminal of constant-current driven module, the output end of the control terminal of the first switch tube and first operational amplifier
Connection, the control terminal of the second switch are connect with the output end of the second operational amplifier, the third switching tube
Control terminal is connect with the output end of the third operational amplifier, the second input terminal of first operational amplifier, described
The first end of the current output terminal of one switching tube and the first resistor unit connects altogether, the second end of the first resistor unit
Ground connection, the second input terminal of the second operational amplifier, the current output terminal of the second switch and second electricity
The first end of resistance unit connects altogether, the second end ground connection of the second resistance unit, the second input of the third operational amplifier
The first end at end, the current output terminal of the third switching tube and the 3rd resistor unit connects altogether, the 3rd resistor list
The second end ground connection of member, the first of the first input end of first operational amplifier and the first pulse width modulation controlled unit
The second output terminal of output end connection, the first input end of the second operational amplifier and the pulse width modulation controlled unit connects
It connects, the first input end of the third operational amplifier is connect with the third input terminal of the pulse width modulation controlled unit.
3. intelligent dimming control circuit as described in claim 1, which is characterized in that second constant-current driven module includes:
Four-operational amplifier, the 5th operational amplifier, the 4th switching tube, the 5th switching tube, the 4th resistance unit, the 5th resistance list
Member；And
It is connect with the second pulse-width modulation control signal output end of the control module, for according to the second pulsewidth modulation control
Signal processed exports the second pulse width modulation controlled unit of the 4th pulse-width signal, the 5th pulse-width signal；
First input end of the current input terminal of 4th switching tube as second constant-current driven module, the described 5th opens
Close second input terminal of the current input terminal as second constant-current driven module of pipe, the control terminal of the 4th switching tube with
The output end of the four-operational amplifier connects, and the control terminal of the 5th switching tube is defeated with the 5th operational amplifier
Outlet connection, the second input terminal of the four-operational amplifier, the current output terminal of the 4th switching tube and described the
The first end of four resistance units connects altogether, the second end ground connection of the 4th resistance unit, and the second of the 5th operational amplifier
The first end of input terminal, the current output terminal of the 5th switching tube and the 5th resistance unit connects altogether, the 5th electricity
Hinder the second end ground connection of unit, the first input end of the four-operational amplifier and the second pulse width modulation controlled unit
The connection of first output end, the first input end of the 5th operational amplifier and the second of the second pulse width modulation controlled unit
Output end connection.
4. intelligent dimming control circuit as claimed in claim 3, which is characterized in that first constant-current driven module also wraps
It includes:
It is connect with the first logic control signal output end of the control module, first for being exported according to the control module
Logic control signal output first makes to can control signal, second makes to can control signal and third and make can control signal first to patrol
Collect control unit；
It is connect with the first output end of first logic control element, it is defeated for first to first constant-current driven module
Enter end progress signal sampling and obtain the first sampled signal, and makes to can control letter according to first sampled signal and described first
Number output the first logical signal and the first data-signal the first sample detecting unit；
It is connect with the second output terminal of the logic control element, for the second input terminal to first constant-current driven module
It carries out signal sampling and obtains the second sampled signal, and according to second sampled signal and described second make to can control signal defeated
Second sample detecting unit of the second logical signal and the second data-signal out；
It is connect with the third output end of the logic control element, for the third input terminal to first constant-current driven module
It carries out signal sampling and obtains third sampled signal, and according to the third sampled signal and the third make to can control signal defeated
The third sample detecting unit of third logical signal and third data-signal out；And
Connect respectively with the first sample detecting unit, the second sample detecting unit and the third sample detecting unit
It connects, for being believed according to first logical signal, first data-signal, second logical signal, second data
Number, the third logical signal and the third data-signal export the first register cell of first feedback signal.
5. intelligent dimming control circuit as claimed in claim 4, which is characterized in that the first sample detecting unit includes:
11st comparator, the 12nd comparator, the first XOR gate, first and door, the 11st tri-state gate and the 12nd tri-state gate；
The first input end of 11st comparator, the first input end of the 12nd comparator and the display device
The first output end connect altogether, the second input terminal of the 11st comparator is connect with the 11st preset reference voltage source, described
Second input terminal of the 12nd comparator is connect with the 12nd preset reference voltage source, the output end of the 11st comparator,
The first input end of first XOR gate, described first connect altogether with the first input end of door, the 12nd comparator it is defeated
Outlet, the second input terminal of first XOR gate and described first and the second input terminal of door connect altogether, first exclusive or
The output end of door is connect with the input terminal of the 11st tri-state gate, the described first output end with door and the 12nd tri-state
The input terminal connection of door, the control terminal of the 11st tri-state gate and the control terminal of the 12nd tri-state gate are connect altogether as institute
The first enabled control signal input of the first sample detecting unit is stated, the output end of the 11st tri-state gate is as described
The logical signal output end of one sample detecting unit, the output end of the 12nd tri-state gate is as the first sample detecting list
The data signal output of member.
6. intelligent dimming control circuit as described in claim 1, which is characterized in that the power conversion module includes:
It is connect with the constant-current driven module, for carrying out signal decomposition operation to the voltage adjustment signal, and exports first
The signal decomposition unit of time delayed signal and the second time delayed signal；
It is connect with the signal decomposition unit, for according to first time delayed signal and the second time delayed signal output pulse width tune
The pulsewidth modulation converting unit of signal processed；And
It is connect with the pulsewidth modulation converting unit, for according to the pulse-width signal and the DC signal output
The pwm switch unit of first d. c. voltage signal and second d. c. voltage signal.
7. intelligent dimming control circuit as claimed in claim 6, which is characterized in that the pulsewidth modulation converting unit includes:
First constant-current source, the first level switch, second electrical level switch, third level switch, the first signal buffer, second signal buffering
Device, first capacitor, the second capacitor, third capacitor and the 20th comparator；
The first end of first level switch is connect with the first end of first constant-current source, and the of first level switch
Two ends, the first end of the first capacitor, the third level switch and first signal buffer input terminal connect altogether,
The output end of first signal buffer is connect with the first end that the second electrical level switchs, and the of second electrical level switch
The input terminal at two ends, the first end of second capacitor and the second signal buffer connects altogether, first constant-current source
Second end, the second end of the first capacitor, the second end of the third level switch, the second end of second capacitor and
The second end of the third capacitor is connected to ground altogether, and the of the output end of the second signal buffer and the 20th comparator
The connection of two input terminals, output end of the output end of the 20th comparator as the pulsewidth modulation converting unit.
8. intelligent dimming control circuit as claimed in claim 6, which is characterized in that the pwm switch unit includes:
Pwm switch, the first transformer, the 4th diode, the 5th diode, the 5th capacitor and the 6th capacitor；
The first input end of first transformer is connect with the output end of the rectification module, and the of the pwm switch
One end is connect with the output end of the pulsewidth modulation converting unit, the second end of the pwm switch and first transformation
Second input terminal of device connects, and the first cathode output end of first transformer is connect with the anode of the 4th diode,
The cathode of 4th diode and the first end of the 5th capacitor connect the first direct current as the power conversion module altogether
Voltage signal output end, the second cathode output end of first transformer is connect with the anode of the 5th diode, described
The first end of the cathode of 5th diode and the 6th capacitor connects the second DC voltage as the power conversion module altogether
Signal output end, the first cathode output end of first transformer, the second end of the 5th capacitor, first transformer
The second cathode output end and the second end of the 6th capacitor be connected to ground altogether.
9. a kind of intelligent dimming control system, which is characterized in that the intelligent dimming control system includes AC power source, first aobvious
Showing device, the second display device and intelligent dimming control circuit as claimed in any one of claims 1 to 8.
10. intelligent dimming control system as claimed in claim 9, which is characterized in that first display device includes feux rouges
Lamp group, green light lamp group and blue light lamp group；
The first end of the feux rouges lamp group, the first end of the first end of the green light lamp group and the blue light lamp group and described
First d. c. voltage signal output end of power conversion module connects altogether, and the second end of the feux rouges lamp group and first constant current are driven
The first input end of dynamic model block connects, and the green light lamp group is connect with the second input terminal of first constant-current driven module, institute
Blue light lamp group is stated to connect with the third input terminal of first constant-current driven module；
Second display device includes: white light lamp group and yellow light lamp group；
Second direct current of the first end of the first end of the white light lamp group and the yellow light lamp group and the power conversion module
Signal output end connection is pressed, the second end of the white light lamp group is connect with the first input end of second constant-current driven module,
The second end of the yellow light lamp group is connect with the second input terminal of second constant-current driven module.
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| CN201810847689.XA CN108966459B (en) | 2018-07-27 | 2018-07-27 | Intelligent dimming control circuit and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109960303A (en) * | 2019-04-30 | 2019-07-02 | 深圳市明微电子股份有限公司 | A kind of self-adaption constant flow control device |
| CN111417237A (en) * | 2020-04-23 | 2020-07-14 | 洪阳伟业光电科技(苏州)有限公司 | Indoor direct-current health-care lighting intelligent control system |
| CN117134312A (en) * | 2023-10-26 | 2023-11-28 | 深圳清大电子科技有限公司 | Power supply circuit of display screen |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110234115A1 (en) * | 2010-03-23 | 2011-09-29 | Takayuki Shimizu | Led drive circuit, led illumination fixture, led illumination device, and led illumination system |
| CN102612232A (en) * | 2012-03-23 | 2012-07-25 | 上海信耀电子有限公司 | Driving control system with multiple LED (light emitting diode) loads for automobile |
| CN102645948A (en) * | 2012-04-23 | 2012-08-22 | 电子科技大学 | Adjustable constant-current source |
| US20130162150A1 (en) * | 2010-09-24 | 2013-06-27 | Sharp Kabushiki Kaisha | Integrated circuit for illumination device, and illumination device |
| CN104768269A (en) * | 2014-01-02 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Locomotive lamp driving circuit with lighting and signals |
| CN105979662A (en) * | 2016-07-06 | 2016-09-28 | 深圳市明微电子股份有限公司 | LED constant current drive circuit and LED lighting device |
| CN106132025A (en) * | 2016-08-15 | 2016-11-16 | 深圳市富满电子集团股份有限公司 | A kind of LED constant current driving chip, device and LED |
| CN106211449A (en) * | 2016-07-22 | 2016-12-07 | 上海顿格电子贸易有限公司 | A kind of circuit of LED of three-stage dimming |
| CN106535390A (en) * | 2016-10-09 | 2017-03-22 | 深圳创维－Rgb电子有限公司 | Constant current driving power supply and display equipment |
-
2018
- 2018-07-27 CN CN201810847689.XA patent/CN108966459B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110234115A1 (en) * | 2010-03-23 | 2011-09-29 | Takayuki Shimizu | Led drive circuit, led illumination fixture, led illumination device, and led illumination system |
| US20130162150A1 (en) * | 2010-09-24 | 2013-06-27 | Sharp Kabushiki Kaisha | Integrated circuit for illumination device, and illumination device |
| CN102612232A (en) * | 2012-03-23 | 2012-07-25 | 上海信耀电子有限公司 | Driving control system with multiple LED (light emitting diode) loads for automobile |
| CN102645948A (en) * | 2012-04-23 | 2012-08-22 | 电子科技大学 | Adjustable constant-current source |
| CN104768269A (en) * | 2014-01-02 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Locomotive lamp driving circuit with lighting and signals |
| CN105979662A (en) * | 2016-07-06 | 2016-09-28 | 深圳市明微电子股份有限公司 | LED constant current drive circuit and LED lighting device |
| CN106211449A (en) * | 2016-07-22 | 2016-12-07 | 上海顿格电子贸易有限公司 | A kind of circuit of LED of three-stage dimming |
| CN106132025A (en) * | 2016-08-15 | 2016-11-16 | 深圳市富满电子集团股份有限公司 | A kind of LED constant current driving chip, device and LED |
| CN106535390A (en) * | 2016-10-09 | 2017-03-22 | 深圳创维－Rgb电子有限公司 | Constant current driving power supply and display equipment |
Non-Patent Citations (3)
| Title |
|---|
| SHIH-CHANG HSIA: "High-power led dimming driver with multi-level current for smart street lighting system", 《2013 22ND ITC SPECIALIST SEMINAR ON ENERGY EFFICIENT AND GREEN NETWORKING (SSEEGN)》 * |
| 冯玲玲: "一种具有线性调光功能的LED驱动芯片的设计", 《万方数据库》 * |
| 潘超: "交流直接驱动的可调光大功率LED照明系统的设计", 《照明工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109960303A (en) * | 2019-04-30 | 2019-07-02 | 深圳市明微电子股份有限公司 | A kind of self-adaption constant flow control device |
| CN111417237A (en) * | 2020-04-23 | 2020-07-14 | 洪阳伟业光电科技(苏州)有限公司 | Indoor direct-current health-care lighting intelligent control system |
| CN117134312A (en) * | 2023-10-26 | 2023-11-28 | 深圳清大电子科技有限公司 | Power supply circuit of display screen |
| CN117134312B (en) * | 2023-10-26 | 2024-03-26 | 深圳清大电子科技有限公司 | Power supply circuit of display screen |
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