CN110278638A - LED light source alternative expression luminescent system and its method are controlled by pwm signal - Google Patents
LED light source alternative expression luminescent system and its method are controlled by pwm signal Download PDFInfo
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- CN110278638A CN110278638A CN201910673130.4A CN201910673130A CN110278638A CN 110278638 A CN110278638 A CN 110278638A CN 201910673130 A CN201910673130 A CN 201910673130A CN 110278638 A CN110278638 A CN 110278638A
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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]
Abstract
The present invention is a kind of by pwm signal control LED light source alternative expression luminescent system and its method, the system includes power supply module, the LED light source group module luminous for alternative expression and the driving power management module to shine for controlling LED light source group module alternative expression, the power supply module is electrically connected with driving power management module, and the driving power management module is electrically connected with LED light source group module.The driven management to LED light source group module is realized by driving power management module, LED light source group module alternative expression is enable to shine, and the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realizes the induction to the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
Description
Technical field
The invention belongs to the LED fields, in particular to by pwm signal control LED light source alternative expression luminescent system and its
Method.
Background technique
With the development of society, LED energy-saving lamp has welcome unprecedented development, as the investment and continuous innovation of research and development change
Into LED power-saving technology is increasingly mature.
During Fisheries Development, the shoal of fish is lured often through light realization, but how to design adaptation fishery
Illumination and the requirement of brightening illuminating product are current fishery problems to be solved.Using time delay, it is bright to generate different time sections
Light generates the color that do not share the same light,
Summary of the invention
To solve the above problems, a kind of the purpose of the present invention is to provide brightness adjustable, color changeable, to shoal of fish inductivity
LED light source alternative expression luminescent system and its method are preferably controlled by pwm signal.
That it is another object of the present invention to provide a kind of structures is simple, performance is stable, production cost is low, makes convenient for promoting
LED light source alternative expression luminescent system and its method are controlled by pwm signal.
To achieve the above object, first technical solution of the invention is as follows.
LED light source alternative expression luminescent system is controlled by pwm signal the present invention provides a kind of, which includes power supply mould
Block, the LED light source group module luminous for alternative expression and the driving power pipe to shine for controlling LED light source group module alternative expression
Module is managed, the power supply module is electrically connected with driving power management module, the driving power management module and LED light source group mould
Block electrical connection.It is realized by driving power management module to the driven management of LED light source group module, enables LED light source group module
Enough alternative expression shines, and the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realization pair
The induction of the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
Further, the driving power management module includes main control chip, the concrete model of the main control chip are as follows:
L1050, the main control chip are set as more than one.L1050 is the preferable choosing for driving LED light source group module alternative expression luminous
It selects.
Further, the LED light source group module includes one group or more LED light source, and LED light source is using R is red, G is green, B is blue
Three kinds of color mixing are assembled, and LED light source, which shines, the combinational circuit of five sections of partial pressure output, drive this per main control chip all the way
Group LED light source distributes two sections in adjacent main control chip driving LED light source group, and LED light source intersects cloth in physical area
It sets, and is single energization in circuit drives.By that this group of LED light source will be driven to distribute two sections to phase per main control chip all the way
In adjacent main control chip driving LED light source group and LED light source is using R is red, G is green, the mixing of B blue three-color is assembled, makes every
The LED light source of same group of same color of main control chip driving can be realized mashed up with the progress of other LED light source group colors all the way, from
And have the LED light source color connected on every piece of circuit board all R is red, G is green, B blue three-color.
Further, the driving power management module further includes time base circuit unit and counter unit, base when described
Circuit unit is electrically connected with counter unit, and the main control chip is set as three, and the main control chip is and counter unit
Electrical connection, the time base circuit unit includes NE555 time base circuit, is provided with the 57th on the NE555 time base circuit
Capacitor, the end THRES of the NE555 time base circuit and the common end at the end TRIG are electrically connected with the 57th capacitor, the NE555
The end GND of time base circuit is electrically connected with the 57th capacitor, and the OUT terminal of the NE555 time base circuit is electrically connected with counter unit
It connects.The generation and supply that the pulse of this circuit sequence is realized by the design of time base circuit unit, are produced by time base circuit unit
Raw time sequential pulse drive counter unit work, is worked by counter unit and drives main control chip work, and then realization pair
The brightness adjustment control of LED light source group module.When 57th capacitor discharges, the OUT terminal release high level of NE555 time base circuit is to meter
Realize the generation of time sequential pulse and the supply to counter unit in the receiving end of number device unit.
Further, the counter unit includes CD4024 chip, when the end CP of the CD4024 chip is with NE555
The OUT terminal of base circuit is electrically connected, and is provided with output end Q1-Q7 on the CD4024 chip；When the end CP of CD4024 chip receives
When to high level, the output end Q1-Q7 of CD4024 chip is sequentially output high level, and according to the output end Q1- of CD4024 chip
The sequence of Q7, CD4024 trigger circuit are divided into first group, second group, third group, and three groups are respectively sequentially output with high level, three components
It is not electrically connected with the end DIM of three main control chips.Counter unit receives phase after the time sequential pulse that time base circuit unit provides
The Q1-Q7 output end of Ying Ben counter unit is sequentially output high point and puts down, and is sequentially output the three of high level by the way that Q1-Q7 to be divided into
Group exports and three groups are electrically connected the function of realizing three main control chips and successively receive electric signal with three main control chips respectively, is
Three main control chips successively drive LED light source group module alternative expression to shine and do basis.
Further, described first group include output end Q1, Q4 and Q7 and respectively with the 24th diode, the 25th
It is electrically connected after diode and the electrical connection of the 26th diode with the end DIM of first main control chip, described second group includes defeated
Outlet Q3 and Q5 and the DIM after being electrically connected respectively with the 27th diode and the 28th diode with second main control chip
End electrical connection, the third group include output end Q2 and Q6 and are electrically connected respectively with the 29th diode and the 30th diode
It is electrically connected afterwards with the end DIM of third main control chip.By the electrical connection of every group of output end and corresponding diode, make every component
Not Chan Sheng a pwm signal, and because every group of output end generate high level signal there are the time difference, make the PWM of every group of generation
There are time difference, every group of pwm signals to be successively separately connected three main control chips for signal, makes three intermittent drivings of main control chip
The LED light source of LED light source group module makes LED light source jump formula shine；This function is 0~5V level active mode when realizing,
NE555 time base circuit and CD4024 trigger circuit are that 0~5V level exports.
LED light source alternative expression luminescent system is controlled by pwm signal the present invention provides a kind of, which includes power supply mould
Block, the LED light source group module luminous for alternative expression and the driving power pipe to shine for controlling LED light source group module alternative expression
Module is managed, the power supply module is electrically connected with driving power management module, the driving power management module and LED light source group mould
Block electrical connection.It is realized by driving power management module to the driven management of LED light source group module, enables LED light source group module
Enough alternative expression shines, and the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realization pair
The induction of the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
To achieve the above object, second technical solution of the invention is as follows.
LED light source alternative expression luminescent system is controlled by pwm signal the present invention also provides a kind of, which includes power supply
Module, the LED light source group module luminous for alternative expression and the driving power to shine for controlling LED light source group module alternative expression
Management module, the power supply module are electrically connected with driving power management module, the driving power management module and LED light source group
Module electrical connection.It is realized by driving power management module to the driven management of LED light source group module, makes LED light source group module
Can alternative expression shine, the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realizes
Induction to the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
Further, the driving power management module includes main control chip, the concrete model of the main control chip are as follows:
L1050, the main control chip are set as more than one.L1050 is the preferable choosing for driving LED light source group module alternative expression luminous
It selects.
Further, the LED light source group module includes one group or more LED light source, and LED light source is using R is red, G is green, B is blue
Three kinds of color mixing are assembled, and LED light source, which shines, the combinational circuit of five sections of partial pressure output, drive this per main control chip all the way
Group LED light source distributes two sections in adjacent main control chip driving LED light source group, and LED light source intersects cloth in physical area
It sets, and is single energization in circuit drives.By that this group of LED light source will be driven to distribute two sections to phase per main control chip all the way
In adjacent main control chip driving LED light source group and LED light source is using R is red, G is green, the mixing of B blue three-color is assembled, makes every
The LED light source of same group of same color of main control chip driving can be realized mashed up with the progress of other LED light source group colors all the way, from
And have the LED light source color connected on every piece of circuit board all R is red, G is green, B blue three-color.
Further, the driving power management module further includes time base circuit unit and counter unit, base when described
Circuit unit is electrically connected with counter unit, and the main control chip is set as three, and the main control chip is and counter unit
Electrical connection, the time base circuit unit includes NE555 time base circuit, is provided with the 57th on the NE555 time base circuit
Capacitor, the end THRES of the NE555 time base circuit and the common end at the end TRIG are electrically connected with the 57th capacitor, the NE555
The end GND of time base circuit is electrically connected with the 57th capacitor, and the OUT terminal of the NE555 time base circuit is electrically connected with counter unit
It connects.The generation and supply that the pulse of this circuit sequence is realized by the design of time base circuit unit, are produced by time base circuit unit
Raw time sequential pulse drive counter unit work, is worked by counter unit and drives main control chip work, and then realization pair
The brightness adjustment control of LED light source group module.When 57th capacitor discharges, the OUT terminal release high level of NE555 time base circuit is to meter
Realize the generation of time sequential pulse and the supply to counter unit in the receiving end of number device unit.
Further, the counter unit includes CD4024 chip, when the end CP of the CD4024 chip is with NE555
The OUT terminal of base circuit is electrically connected, and is provided with output end Q1-Q7 on the CD4024 chip；When the end CP of CD4024 chip receives
When to high level, the output end Q1-Q7 of CD4024 chip is sequentially output high level, and according to the output end Q1- of CD4024 chip
The sequence of Q7, CD4024 trigger circuit are divided into first group, second group, third group, and three groups are respectively sequentially output with high level, three components
It is not electrically connected with the end DIM of main control chip.Counter unit accordingly exists after receiving the time sequential pulse that time base circuit unit provides
The Q1-Q7 output end of this counter unit is sequentially output that high point is flat, by Q1-Q7 is divided into be sequentially output three groups of high level it is defeated
Out and three groups are electrically connected the function of realizing three main control chips and successively receive electric signal with three main control chips respectively, are three
Main control chip successively drives LED light source group module alternative expression to shine and does basis.
Further, the driving power management module further includes amplifier unit, and the amplifier unit includes
There is MAX4477 chip, MAX4477 chip is electrically connected with counter unit, the end the DIM electricity of MAX4477 chip and main control chip
Connection.
Further, described first group include Q1, Q4 and Q7 and respectively with the 74th resistance, the 76th resistance and
The electrical connection of 78 resistance, the 74th resistance, the common end of the 76th resistance and the 78th resistance with first
The end LA+ of MAX4477 chip is electrically connected, described second group include Q3 and Q5 and respectively with the 102nd resistance and the 100th
The electrical connection of three resistance, the common end of the 102nd resistance and the 103rd resistance and second MAX4477 chip
The electrical connection of the end LA+, the third group includes Q2 and Q6 and is electrically connected respectively with the 90th resistance and the 92nd resistance, and described the
The common end of 90 resistance and the 92nd resistance is electrically connected with the end LA+ of third MAX4477 chip, the MAX4477 core
The end LA+ and the end LA- of piece are comparison circuit, the end IB+ of the MAX4477 chip and the 83rd resistance and the 86th resistance
Electrical connection, the end IB- of the MAX4477 chip is electrically connected with the 61st capacitor and the 85th resistance.Base when each NE555
When the 57th capacitor of circuit discharges, after the high potential input CD4024 chip circuit that the OUT terminal of NE555 time base circuit generates,
What CD4024 chip was sequentially output is sequentially assigned to output end Q1-Q7, is sequentially output high potential to the end LA+ of MAX4477 chip
Triggering, in MAX4477 chip control circuit, the end IB+ and the end IB- generate frequency of oscillation as 500Hz, and the change of frequency of oscillation can
Depending on being changed by the 61st capacitor at the end IB- and the 85th resistance, changes capacitance size, MAX4477 chip can be made
Output PWM frequency and change, the frequency for reaching each MAX4477 chip control circuit in this way is different (200Hz-500Hz),
The input port DIM per main control chip driving circuit all the way is set to be connected to pwm signal timing different, it is gentle to flash when making light source luminescent
Excessively, bright gentle flickering reaches the variation of 256 primary colours of LED light source (RGB), generates the long photochromic flickering alternating of progress of Different lightwave
Luminous fade effect.
LED light source alternative expression luminescent system is controlled by pwm signal the present invention also provides a kind of, which includes power supply
Module, the LED light source group module luminous for alternative expression and the driving power to shine for controlling LED light source group module alternative expression
Management module, the power supply module are electrically connected with driving power management module, the driving power management module and LED light source group
Module electrical connection.It is realized by driving power management module to the driven management of LED light source group module, makes LED light source group module
Can alternative expression shine, the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realizes
Induction to the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
To achieve the above object, third technical solution of the invention is as follows.
LED light source alternative expression luminescent system is controlled by pwm signal the present invention also provides a kind of, which includes power supply
Module, the LED light source group module luminous for alternative expression and the driving power to shine for controlling LED light source group module alternative expression
Management module, the power supply module are electrically connected with driving power management module, the driving power management module and LED light source group
Module electrical connection.It is realized by driving power management module to the driven management of LED light source group module, makes LED light source group module
Can alternative expression shine, the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realizes
Induction to the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
Further, the driving power management module includes main control chip, the concrete model of the main control chip are as follows:
L1050, the main control chip are set as more than one.L1050 is the preferable choosing for driving LED light source group module alternative expression luminous
It selects.
Further, the LED light source group module includes one group or more LED light source, and LED light source is using R is red, G is green, B is blue
Three kinds of color mixing are assembled, and LED light source, which shines, the combinational circuit of five sections of partial pressure output, drive this per main control chip all the way
Group LED light source distributes two sections in adjacent main control chip driving LED light source group, and LED light source intersects cloth in physical area
It sets, and is single energization in circuit drives.By that this group of LED light source will be driven to distribute two sections to phase per main control chip all the way
In adjacent main control chip driving LED light source group and LED light source is using R is red, G is green, the mixing of B blue three-color is assembled, makes every
The LED light source of same group of same color of main control chip driving can be realized mashed up with the progress of other LED light source group colors all the way, from
And have the LED light source color connected on every piece of circuit board all R is red, G is green, B blue three-color.
Further, the 23rd resistance, the 24th resistance and are additionally provided in the driving power management module
25 resistance, the 23rd resistance, the 24th resistance and the 25th resistance are connected latter end and main control chip
The electrical connection of the end VCC, the other end are electrically connected with the end GND, common end and the master control of the 24th resistance and the 25th resistance
The end DIM of chip is electrically connected, and the end VCC of main control chip divides a reference potential 2.5V through R23, R24 and R25 at this time.Work as electricity
Road functionally when driving L1050 power management chip, needs itself circuit without external PWM signal (0~5V level) at this time
The end VCC divides reference potential 2.5V or so, the LED light source group that R is red in every piece of driving plate, G is green, B is blue through R23, R24, R25
White light is synthesized, brightness setting is 50%, and when control circuit is debugged, standard value DIM mouthfuls of voltage of definition is higher, and the brightness of output is got over
It is high.
LED light source alternative expression luminescent method is controlled by pwm signal the present invention also provides a kind of, which is characterized in that should
The specific implementation step of method is as follows:
S1: by LED light source group module realize every group of LED light source using R is red, G is green, the mixing of B blue three-color is assembled,
LED light source is set to intersect in physical area arrangement；
S2: the driven management to LED light source is realized by driving power management module, when driving power management module has
When pwm signal inputs, then the step of carrying out S3；When driving power management module does not have pwm signal input, then carry out S10's
Step；
S3: when LED light source jumps color-changing light-emitting, then the step of carrying out S4；When LED light source gradient color shines, then carry out
The step of S7；
S4: driving power management module includes time base circuit unit, counter unit and main control chip, passes through time base circuit
The time sequential pulse that unit generates drives counter unit work, is worked by counter unit and drives main control chip work, in turn
Main control chip realizes the brightness adjustment control to LED light source group module；
S5: wherein main control chip includes L1050 chip and main control chip is set as three, and wherein time base circuit unit includes
NE555 time base circuit, three main control chips are electrically connected with one group of LED light source respectively, and counter unit includes CD4024 chip, will
7 output ends of CD4024 chip are divided into three groups, i.e. Q1, Q4, Q7 is one group, and Q3, Q5 are one group, and Q2, Q6 are one group, will
Three groups of the output end of CD4024 chip are connect with three main control chips respectively；
Driving power management module includes time base circuit unit, counter unit and main control chip, at that time base circuit unit
When generating time sequential pulse drive counter unit work, 7 output end Q1-Q7 of counter unit are sequentially output high level, i.e.,
Three groups of the output end of CD4024 chip are sequentially output high level, and then every group of output end is made successively to drive main control chip, and three
Main control chip successively drives LED light source to shine, and LED light source is made the jump of different color occur；
S6: driving power management module includes time base circuit unit, counter unit, main control chip and amplifier unit,
Counter unit work is driven by the time sequential pulse that time base circuit unit generates, is worked by counter unit and drives amplifier
Unit generates pwm signal, and the pwm signal driving main control chip of the output end output of amplifier unit is realized to LED light source group mould
The brightness adjustment control of block；
S7: wherein main control chip includes L1050 chip and main control chip is set as three, and wherein time base circuit unit includes
NE555 time base circuit, counter unit include CD4024 chip, and amplifier unit includes MAX4477 chip and amplifier unit
Three are set as, three main control chips are electrically connected with one group of LED light source respectively, and 7 output ends of CD4024 chip are divided into three
Group, i.e. Q1, Q4, Q7 are first group, and Q3, Q5 are second group, and Q2, Q6 are third group, by the three of 7 output ends of CD4024 chip
Group is connect with three MAX4477 chips respectively；Wherein first group of the output end of CD4024 chip is respectively and on MAX4477 chip
The 74th resistance, the 76th resistance and the electrical connection of the 78th resistance, the 74th resistance, the 76th resistance and the
The common end of 78 resistance is electrically connected with the end LA+ of first MAX4477 chip, second group respectively with the 102nd resistance
It is electrically connected with the 103rd resistance, the common end and second MAX4477 of the 102nd resistance and the 103rd resistance
The end LA+ of chip is electrically connected, and third component is not electrically connected with the 90th resistance and the 92nd resistance, the 90th resistance and the 9th
The common end of 12 resistance is electrically connected with the end LA+ of third MAX4477 chip, and the end LA+ and the end LA- of MAX4477 chip are
The end IB+ of comparison circuit, MAX4477 chip is electrically connected with the 83rd resistance and the 86th resistance, MAX4477 chip
The end IB- is electrically connected with the 61st capacitor and the 85th resistance；
Driving power management module includes time base circuit unit, counter unit, main control chip and amplifier unit, at that time
When base circuit unit generates time sequential pulse drive counter unit work, 7 output end Q1-Q7 of counter unit are sequentially output
High level, i.e. the three of the output end of CD4024 chip group are sequentially output high level, and then every group of output end is made successively to drive correspondence
MAX4477 chip, it is 500Hz that the end IB+ and the end IB- on MAX4477 chip, which generate frequency of oscillation, and the change of frequency of oscillation can
Depending on being changed by the 61st capacitor at the end IB- and the 85th resistance, changes capacitance size, MAX4477 chip can be made
Output PWM frequency and change, the frequency for reaching each MAX4477 chip control circuit in this way is different (200Hz-500Hz),
The input port DIM per main control chip driving circuit all the way is set to be connected to pwm signal timing different, it is gentle to flash when making light source luminescent
Excessively, bright gentle flickering reaches the variation of 256 primary colours of LED light source (RGB), generates the long photochromic flickering alternating of progress of Different lightwave
Luminous fade effect；
S8: driving power management module includes main control chip, and main control chip includes L1050 chip, is arranged on main control chip
There are the 23rd resistance, the 24th resistance and the 25th resistance, the 23rd resistance, the 24th resistance and second
15 resistance latter end of connecting is electrically connected with the end VCC of main control chip, and the other end is electrically connected with the end GND, the 24th electricity
Resistance and the common end of the 25th resistance and the end DIM of main control chip are electrically connected, and the end VCC of main control chip is through R23, R24 at this time
A reference potential 2.5V is divided with R25.Drive the L1050 electric when there is no external PWM signal (0~5V level) in circuit function
When source control chip, need itself end circuit VCC through R23 at this time, R24, R25 divide reference potential 2.5V or so, and every piece
The LED light source that R is red in driving plate, G is green, B is blue is combined into white light, and brightness setting is 50%, when control circuit is debugged, defines standard
DIM mouthfuls of voltages of value are higher, and the brightness of output is higher.
In conclusion the present invention is a kind of by pwm signal control LED light source alternative expression luminescent system, which includes
Power supply module, the LED light source group module luminous for alternative expression and the driving to shine for controlling LED light source group module alternative expression
Power management module, the power supply module are electrically connected with driving power management module, the driving power management module and LED light
The electrical connection of source group module.It is realized by driving power management module to the driven management of LED light source group module, makes LED light source group
Module can alternative expression shine, the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably
Realize the induction to the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
Detailed description of the invention
Fig. 1 is the circuit distribution map of pwm signal control LED light source alternative expression luminescent system of the invention.
Fig. 2 is the time base circuit unit and counter list of pwm signal control LED light source alternative expression luminescent system of the invention
First operation schematic diagram.
Fig. 3 is the LED light source group function structure chart of pwm signal control LED light source alternative expression luminescent system of the invention.
LED light source group module light-emitting junction composition when Fig. 4 is no pwm signal of the invention input.
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.
To achieve the above object, first technical solution of the invention is as follows.
LED light source alternative expression luminescent system is controlled by pwm signal the present invention provides a kind of, which includes power supply mould
Block, the LED light source group module luminous for alternative expression and the driving power pipe to shine for controlling LED light source group module alternative expression
Module is managed, the power supply module is electrically connected with driving power management module, the driving power management module and LED light source group mould
Block electrical connection.It is realized by driving power management module to the driven management of LED light source group module, enables LED light source group module
Enough alternative expression shines, and the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realization pair
The induction of the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
In the present embodiment, the driving power management module includes main control chip, the particular type of the main control chip
Number are as follows: L1050, the main control chip are set as more than one.L1050 be drive LED light source group module alternative expression shine compared with
Good selection.
In the present embodiment, the LED light source group module include one group or more LED light source, LED light source using R is red, G is green,
The mixing of B blue three-color is assembled, and LED light source, which shines, the combinational circuit of five sections of partial pressure output, drives per main control chip all the way
It moves this group of two sections of LED light source distribution to drive in LED light source group to adjacent main control chip, LED light source is mutually handed in physical area
Fork arrangement, and be single energization in circuit drives.By that this group of LED light source will be driven to distribute two sections per main control chip all the way
In to adjacent main control chip driving LED light source group and LED light source is using R is red, G is green, the mixing of B blue three-color is assembled,
Making can be realized per the LED light source of same group of same color of the driving of main control chip all the way is mixed with other LED light source group colors
It takes, so that the LED light source color connected on every piece of circuit board be made all to have, R is red, G is green, B blue three-color.
In the present embodiment, the driving power management module further includes time base circuit unit and counter unit, described
Time base circuit unit is electrically connected with counter unit, and the main control chip is set as three, and the main control chip is and counter
Unit electrical connection, the time base circuit unit includes NE555 time base circuit, is provided with the 5th on the NE555 time base circuit
17 capacitors, the end THRES of the NE555 time base circuit and the common end at the end TRIG are electrically connected with the 57th capacitor, described
The end GND of NE555 time base circuit is electrically connected with the 57th capacitor, the OUT terminal and counter unit of the NE555 time base circuit
Electrical connection.The generation and supply that the pulse of this circuit sequence is realized by the design of time base circuit unit, pass through time base circuit list
The time sequential pulse that member generates drives counter unit work, is worked by counter unit and drives main control chip work, Jin Ershi
Now to the brightness adjustment control of LED light source group module.When 57th capacitor discharges, the OUT terminal of NE555 time base circuit discharges high level
The generation of time sequential pulse is realized to the receiving end of counter unit and to the supply of counter unit.
In the present embodiment, the counter unit includes CD4024 chip, the end CP of the CD4024 chip with
The OUT terminal of NE555 time base circuit is electrically connected, and is provided with output end Q1-Q7 on the CD4024 chip；As the CP of CD4024 chip
When termination receives high level, the output end Q1-Q7 of CD4024 chip is sequentially output high level, and according to the output of CD4024 chip
The sequence of Q1-Q7 is held, CD4024 trigger circuit is divided into first group, second group, third group, and three groups are respectively sequentially output with high level,
Three groups are electrically connected with the end DIM of three main control chips respectively.Counter unit receives the when serial vein of time base circuit unit offer
High point accordingly is sequentially output in the Q1-Q7 output end of this counter unit after punching to put down, and is sequentially output high electricity by the way that Q1-Q7 to be divided into
Flat three groups of outputs and three groups are electrically connected with three main control chips respectively and realize three main control chips and successively receive electric signal
Function successively drives LED light source group module alternative expression to shine and does basis for three main control chips.
In the present embodiment, described first group include output end Q1, Q4 and Q7 and respectively with the 24th diode, second
It is electrically connected after 15 diodes and the electrical connection of the 26th diode with the end DIM of first main control chip, second group of packet
After including output end Q3 and Q5 and being electrically connected respectively with the 27th diode and the 28th diode with second main control chip
The end DIM electrical connection, the third group include output end Q2 and Q6 and respectively with the 29th diode and the 30th diode
It is electrically connected after electrical connection with the end DIM of third main control chip.By the electrical connection of every group of output end and corresponding diode, make
Every group generates a pwm signal respectively, and because the high level signal of every group of output end generation makes every group of generation there are the time difference
Pwm signal there are the time difference, every group of pwm signal is successively separately connected three main control chips, keeps three main control chips intermittent
The LED light source for driving LED light source group module makes LED light source jump formula shine；This function is 0~5V level active mould when realizing
Formula, NE555 time base circuit and CD4024 trigger circuit are that 0~5V level exports.
To achieve the above object, second technical solution of the invention is as follows.
LED light source alternative expression luminescent system is controlled by pwm signal the present invention also provides a kind of, which includes power supply
Module, the LED light source group module luminous for alternative expression and the driving power to shine for controlling LED light source group module alternative expression
Management module, the power supply module are electrically connected with driving power management module, the driving power management module and LED light source group
Module electrical connection.It is realized by driving power management module to the driven management of LED light source group module, makes LED light source group module
Can alternative expression shine, the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realizes
Induction to the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
In the present embodiment, the driving power management module includes main control chip, the particular type of the main control chip
Number are as follows: L1050, the main control chip are set as more than one.L1050 be drive LED light source group module alternative expression shine compared with
Good selection.
In the present embodiment, the LED light source group module include one group or more LED light source, LED light source using R is red, G is green,
The mixing of B blue three-color is assembled, and LED light source, which shines, the combinational circuit of five sections of partial pressure output, drives per main control chip all the way
It moves this group of two sections of LED light source distribution to drive in LED light source group to adjacent main control chip, LED light source is mutually handed in physical area
Fork arrangement, and be single energization in circuit drives.By that this group of LED light source will be driven to distribute two sections per main control chip all the way
In to adjacent main control chip driving LED light source group and LED light source is using R is red, G is green, the mixing of B blue three-color is assembled,
Making can be realized per the LED light source of same group of same color of the driving of main control chip all the way is mixed with other LED light source group colors
It takes, so that the LED light source color connected on every piece of circuit board be made all to have, R is red, G is green, B blue three-color.
In the present embodiment, the driving power management module further includes time base circuit unit and counter unit, described
Time base circuit unit is electrically connected with counter unit, and the main control chip is set as three, and the main control chip is and counter
Unit electrical connection, the time base circuit unit includes NE555 time base circuit, is provided with the 5th on the NE555 time base circuit
17 capacitors, the end THRES of the NE555 time base circuit and the common end at the end TRIG are electrically connected with the 57th capacitor, described
The end GND of NE555 time base circuit is electrically connected with the 57th capacitor, the OUT terminal and counter unit of the NE555 time base circuit
Electrical connection.The generation and supply that the pulse of this circuit sequence is realized by the design of time base circuit unit, pass through time base circuit list
The time sequential pulse that member generates drives counter unit work, is worked by counter unit and drives main control chip work, Jin Ershi
Now to the brightness adjustment control of LED light source group module.When 57th capacitor discharges, the OUT terminal of NE555 time base circuit discharges high level
The generation of time sequential pulse is realized to the receiving end of counter unit and to the supply of counter unit.
In the present embodiment, the counter unit includes CD4024 chip, the end CP of the CD4024 chip with
The OUT terminal of NE555 time base circuit is electrically connected, and is provided with output end Q1-Q7 on the CD4024 chip；As the CP of CD4024 chip
When termination receives high level, the output end Q1-Q7 of CD4024 chip is sequentially output high level, and according to the output of CD4024 chip
The sequence of Q1-Q7 is held, CD4024 trigger circuit is divided into first group, second group, third group, and three groups are respectively sequentially output with high level,
Three groups are electrically connected with the end DIM of main control chip respectively.After counter unit receives the time sequential pulse of time base circuit unit offer
High point accordingly is sequentially output in the Q1-Q7 output end of this counter unit to put down, and is sequentially output high level by the way that Q1-Q7 to be divided into
Three groups of outputs and three groups are electrically connected the function of realizing three main control chips and successively receive electric signal with three main control chips respectively,
It successively drives LED light source group module alternative expression to shine for three main control chips and does basis.
In the present embodiment, the driving power management module further includes amplifier unit, the amplifier unit
It include MAX4477 chip, MAX4477 chip is electrically connected with counter unit, the DIM of MAX4477 chip and main control chip
End electrical connection.
In the present embodiment, described first group include Q1, Q4 and Q7 and respectively with the 74th resistance, the 76th resistance
It is electrically connected with the 78th resistance, the 74th resistance, the common end of the 76th resistance and the 78th resistance and the
The end the LA+ electrical connection of one MAX4477 chip, described second group include Q3 and Q5 and respectively with the 102nd resistance and first
The electrical connection of 103 resistance, the common end and second MAX4477 core of the 102nd resistance and the 103rd resistance
The end LA+ of piece is electrically connected, and the third group includes Q2 and Q6 and is electrically connected respectively with the 90th resistance and the 92nd resistance, institute
The common end for stating the 90th resistance and the 92nd resistance is electrically connected with the end LA+ of third MAX4477 chip, described
The end LA+ and the end LA- of MAX4477 chip are comparison circuit, the end IB+ of the MAX4477 chip and the 83rd resistance and the
The electrical connection of 86 resistance, the end IB- of the MAX4477 chip is electrically connected with the 61st capacitor and the 85th resistance.Often
When secondary the 57th capacitor of NE555 time base circuit discharges, the high potential that the OUT terminal of NE555 time base circuit generates inputs CD4024
After chip circuit, what CD4024 chip was sequentially output is sequentially assigned to output end Q1-Q7, is sequentially output high potential to MAX4477
The end LA+ of chip is triggered, and in MAX4477 chip control circuit, the end IB+ and the end IB- generate frequency of oscillation as 500Hz, is vibrated
Depending on the change of frequency can be changed by the 61st capacitor at the end IB- and the 85th resistance, changes capacitance size, can make
The output PWM frequency of MAX4477 chip and change, the frequency for reaching each MAX4477 chip control circuit in this way is different
(200Hz-500Hz) makes the input port DIM per main control chip driving circuit all the way be connected to pwm signal timing different, sends out light source
Light time, gentle flashing is excessive, and bright gentle flickering reaches the variation of 256 primary colours of LED light source (RGB), generates the long progress of Different lightwave
The fade effect that photochromic flickering alternately shines.
To achieve the above object, third technical solution of the invention is as follows.
LED light source alternative expression luminescent system is controlled by pwm signal the present invention also provides a kind of, which includes power supply
Module, the LED light source group module luminous for alternative expression and the driving power to shine for controlling LED light source group module alternative expression
Management module, the power supply module are electrically connected with driving power management module, the driving power management module and LED light source group
Module electrical connection.It is realized by driving power management module to the driven management of LED light source group module, makes LED light source group module
Can alternative expression shine, the alternative expression of the LED light source group module, which shines, adapts to the requirement of different shoal of fish phototaxis, preferably realizes
Induction to the shoal of fish.Power supply module, which is realized, supplies the electric energy of entire circuit.
In the present embodiment, the driving power management module includes main control chip, the particular type of the main control chip
Number are as follows: L1050, the main control chip are set as more than one.L1050 be drive LED light source group module alternative expression shine compared with
Good selection.
In the present embodiment, the LED light source group module include one group or more LED light source, LED light source using R is red, G is green,
The mixing of B blue three-color is assembled, and LED light source, which shines, the combinational circuit of five sections of partial pressure output, drives per main control chip all the way
It moves this group of two sections of LED light source distribution to drive in LED light source group to adjacent main control chip, LED light source is mutually handed in physical area
Fork arrangement, and be single energization in circuit drives.By that this group of LED light source will be driven to distribute two sections per main control chip all the way
In to adjacent main control chip driving LED light source group and LED light source is using R is red, G is green, the mixing of B blue three-color is assembled,
Making can be realized per the LED light source of same group of same color of the driving of main control chip all the way is mixed with other LED light source group colors
It takes, so that the LED light source color connected on every piece of circuit board be made all to have, R is red, G is green, B blue three-color.
In the present embodiment, the 23rd resistance, the 24th resistance are additionally provided in the driving power management module
With the 25th resistance, the 23rd resistance, the 24th resistance and the latter end of the 25th resistance series connection and master control core
The end VCC of piece is electrically connected, and the other end is electrically connected with the end GND, the common end of the 24th resistance and the 25th resistance and
The end DIM of main control chip is electrically connected, and the end VCC of main control chip divides a reference potential 2.5V through R23, R24 and R25 at this time.
When not having external PWM signal (0~5V level) to drive L1050 power management chip in circuit function, itself is needed at this time
The end circuit VCC divides reference potential 2.5V or so, the LED light that R is red in every piece of driving plate, G is green, B is blue through R23, R24, R25
Source is combined into white light, and brightness setting is 50%, and when control circuit is debugged, standard value DIM mouthfuls of voltage of definition is higher, the brightness of output
It is higher.
LED light source alternative expression luminescent method, the specific reality of this method are controlled by pwm signal the present invention also provides a kind of
Apply that steps are as follows:
S1: by LED light source group module realize every group of LED light source using R is red, G is green, the mixing of B blue three-color is assembled,
LED light source is set to intersect in physical area arrangement；
S2: the driven management to LED light source is realized by driving power management module, when driving power management module has
When pwm signal inputs, then the step of carrying out S3；When driving power management module does not have pwm signal input, then carry out S10's
Step；
S3: when LED light source jumps color-changing light-emitting, then the step of carrying out S4；When LED light source gradient color shines, then carry out
The step of S7；
S4: driving power management module includes time base circuit unit, counter unit and main control chip, passes through time base circuit
The time sequential pulse that unit generates drives counter unit work, is worked by counter unit and drives main control chip work, in turn
Main control chip realizes the brightness adjustment control to LED light source group module；
S5: wherein main control chip includes L1050 chip and main control chip is set as three, and wherein time base circuit unit includes
NE555 time base circuit, three main control chips are electrically connected with one group of LED light source respectively, and counter unit includes CD4024 chip, will
7 output ends of CD4024 chip are divided into three groups, i.e. Q1, Q4, Q7 is one group, and Q3, Q5 are one group, and Q2, Q6 are one group, will
Three groups of the output end of CD4024 chip are connect with three main control chips respectively；
Driving power management module includes time base circuit unit, counter unit and main control chip, at that time base circuit unit
When generating time sequential pulse drive counter unit work, 7 output end Q1-Q7 of counter unit are sequentially output high level, i.e.,
Three groups of the output end of CD4024 chip are sequentially output high level, and then every group of output end is made successively to drive main control chip, and three
Main control chip successively drives LED light source to shine, and LED light source is made the jump of different color occur；
S6: driving power management module includes time base circuit unit, counter unit, main control chip and amplifier unit,
Counter unit work is driven by the time sequential pulse that time base circuit unit generates, is worked by counter unit and drives amplifier
Unit generates pwm signal, and the pwm signal driving main control chip of the output end output of amplifier unit is realized to LED light source group mould
The brightness adjustment control of block；
S7: wherein main control chip includes L1050 chip and main control chip is set as three, and wherein time base circuit unit includes
NE555 time base circuit, counter unit include CD4024 chip, and amplifier unit includes MAX4477 chip and amplifier unit
Three are set as, three main control chips are electrically connected with one group of LED light source respectively, and 7 output ends of CD4024 chip are divided into three
Group, i.e. Q1, Q4, Q7 are first group, and Q3, Q5 are second group, and Q2, Q6 are third group, by the three of 7 output ends of CD4024 chip
Group is connect with three MAX4477 chips respectively；Wherein first group of the output end of CD4024 chip is respectively and on MAX4477 chip
The 74th resistance, the 76th resistance and the electrical connection of the 78th resistance, the 74th resistance, the 76th resistance and the
The common end of 78 resistance is electrically connected with the end LA+ of first MAX4477 chip, second group respectively with the 102nd resistance
It is electrically connected with the 103rd resistance, the common end and second MAX4477 of the 102nd resistance and the 103rd resistance
The end LA+ of chip is electrically connected, and third component is not electrically connected with the 90th resistance and the 92nd resistance, the 90th resistance and the 9th
The common end of 12 resistance is electrically connected with the end LA+ of third MAX4477 chip, and the end LA+ and the end LA- of MAX4477 chip are
The end IB+ of comparison circuit, MAX4477 chip is electrically connected with the 83rd resistance and the 86th resistance, MAX4477 chip
The end IB- is electrically connected with the 61st capacitor and the 85th resistance；
Driving power management module includes time base circuit unit, counter unit, main control chip and amplifier unit, at that time
When base circuit unit generates time sequential pulse drive counter unit work, 7 output end Q1-Q7 of counter unit are sequentially output
High level, i.e. the three of the output end of CD4024 chip group are sequentially output high level, and then every group of output end is made successively to drive correspondence
MAX4477 chip, it is 500Hz that the end IB+ and the end IB- on MAX4477 chip, which generate frequency of oscillation, and the change of frequency of oscillation can
Depending on being changed by the 61st capacitor at the end IB- and the 85th resistance, changes capacitance size, MAX4477 chip can be made
Output PWM frequency and change, the frequency for reaching each MAX4477 chip control circuit in this way is different (200Hz-500Hz),
The input port DIM per main control chip driving circuit all the way is set to be connected to pwm signal timing different, it is gentle to flash when making light source luminescent
Excessively, bright gentle flickering reaches the variation of 256 primary colours of LED light source (RGB), generates the long photochromic flickering alternating of progress of Different lightwave
Luminous fade effect；
S8: driving power management module includes main control chip, and main control chip includes L1050 chip, is arranged on main control chip
There are the 23rd resistance, the 24th resistance and the 25th resistance, the 23rd resistance, the 24th resistance and second
15 resistance latter end of connecting is electrically connected with the end VCC of main control chip, and the other end is electrically connected with the end GND, the 24th electricity
Resistance and the common end of the 25th resistance and the end DIM of main control chip are electrically connected, and the end VCC of main control chip is through R23, R24 at this time
A reference potential 2.5V is divided with R25.Drive the L1050 electric when there is no external PWM signal (0~5V level) in circuit function
When source control chip, need itself end circuit VCC through R23 at this time, R24, R25 divide reference potential 2.5V or so, and every piece
The LED light source that R is red in driving plate, G is green, B is blue is combined into white light, and brightness setting is 50%, when control circuit is debugged, defines standard
DIM mouthfuls of voltages of value are higher, and the brightness of output is higher.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of control LED light source alternative expression luminescent system by pwm signal, which includes power supply module, for alternative expression
Luminous LED light source group module and the driving power management module to shine for controlling LED light source group module alternative expression, the confession
Electric module is electrically connected with driving power management module, and the driving power management module is electrically connected with LED light source group module.
2. as described in claim 1 control LED light source alternative expression luminescent system by pwm signal, which is characterized in that the drive
Dynamic power management module includes main control chip, the concrete model of the main control chip are as follows: L1050, the main control chip setting
For more than one.
3. as claimed in claim 2 control LED light source alternative expression luminescent system by pwm signal, which is characterized in that described
LED light source group module include one group or more LED light source, LED light source using R is red, G is green, B blue three-color mixing it is assembled,
LED light source, which shines, the combinational circuit of five sections of partial pressure output, this group of LED light source is driven to distribute two sections to phase per main control chip all the way
In adjacent main control chip driving LED light source group, LED light source intersects arrangement in physical area, and is singly in circuit drives
One energization.
4. as claimed in claim 3 control LED light source alternative expression luminescent system by pwm signal, which is characterized in that the drive
Dynamic power management module further includes time base circuit unit and counter unit, and the time base circuit unit is electrically connected with counter unit
Connect, the main control chip is set as three, and the main control chip is electrically connected with counter unit, the main control chip respectively with
One group of LED light source electrical connection, the time base circuit unit includes NE555 time base circuit, is arranged on the NE555 time base circuit
There is the 57th capacitor, the end THRES of the NE555 time base circuit and the common end at the end TRIG are electrically connected with the 57th capacitor
It connects, the end GND of the NE555 time base circuit is electrically connected with the 57th capacitor, the OUT terminal and meter of the NE555 time base circuit
Number device unit electrical connection.
5. as claimed in claim 4 control LED light source alternative expression luminescent system by pwm signal, which is characterized in that the meter
Number device unit includes CD4024 chip, and the end CP of the CD4024 chip is electrically connected with the OUT terminal of NE555 time base circuit, institute
It states and is provided with output end Q1-Q7 on CD4024 chip；When the CP of CD4024 chip termination receives high level, CD4024 chip
Output end Q1-Q7 is sequentially output high level, and the sequence of the output end Q1-Q7 according to CD4024 chip, CD4024 trigger circuit
It is divided into first group, second group, third group, three groups are respectively sequentially output with high level, and three groups are electrically connected with the end DIM of main control chip respectively
It connects.
6. passing through pwm signal control LED light source alternative expression luminescent system as claimed in claim 5, which is characterized in that described the
One group includes Q1, Q4 and Q7 and is electrically connected respectively with the 24th diode, the 25th diode and the 26th diode
Be electrically connected afterwards with the end DIM of first main control chip, described second group include Q3 and Q5 and respectively with the 27th diode and
It is electrically connected after the electrical connection of 28th diode with the end DIM of second main control chip, the third group includes Q2 and Q6 and divides
It is electrically connected after not being electrically connected with the 29th diode and the 30th diode with the end DIM of third main control chip.
7. as claimed in claim 5 control LED light source alternative expression luminescent system by pwm signal, which is characterized in that the institute
Stating driving power management module further includes amplifier unit, and the amplifier unit includes MAX4477 chip, MAX4477 core
Piece is electrically connected with counter unit, and MAX4477 chip is electrically connected with the end DIM of main control chip.
8. passing through pwm signal control LED light source alternative expression luminescent system as claimed in claim 7, which is characterized in that described the
One group include Q1, Q4 and Q7 and respectively with the 74th resistance, the 76th resistance and the electrical connection of the 78th resistance, described the
The end LA+ of 74 resistance, the common end and first MAX4477 chip of the 76th resistance and the 78th resistance is electrically connected
It connects, described second group includes Q3 and Q5 and be electrically connected respectively with the 102nd resistance and the 103rd resistance, described first
The common end of 102 resistance and the 103rd resistance is electrically connected with the end LA+ of second MAX4477 chip, the third group
It is electrically connected including Q2 and Q6 and respectively with the 90th resistance and the 92nd resistance, the 90th resistance and the 92nd resistance
Common end be electrically connected with the end LA+ of third MAX4477 chip, the end LA+ and the end LA- of the MAX4477 chip are to compare
The end I B+ of circuit, the MAX4477 chip is electrically connected with the 83rd resistance and the 86th resistance, the MAX4477 core
The end IB- of piece is electrically connected with the 61st capacitor and the 85th resistance.
9. as claimed in claim 3 control LED light source alternative expression luminescent system by pwm signal, which is characterized in that the drive
It moves and is additionally provided with the 23rd resistance, the 24th resistance and the 25th resistance on power management module, the described 23rd
Resistance, the 24th resistance and the 25th resistance latter end of connecting are electrically connected with the end VCC of main control chip, the other end and GND
End electrical connection, the 24th resistance and the common end of the 25th resistance and the end DIM of main control chip are electrically connected, lead at this time
The end VCC for controlling chip divides a reference potential 2.5V through R23, R24 and R25.
10. a kind of control LED light source alternative expression luminescent method by pwm signal, which is characterized in that the specific implementation of this method walks
It is rapid as follows:
S1: realize that every group of LED light source using R is red, G is green, the mixing of B blue three-color is assembled, makes by LED light source group module
LED light source intersects arrangement in physical area；
S2: the driven management to LED light source is realized by driving power management module, when driving power management module has PWM letter
When number input, then the step of carrying out S3；When driving power management module does not have pwm signal input, then the step of carrying out S8；
S3: when LED light source jumps color-changing light-emitting, then the step of carrying out S4；When LED light source gradient color shines, then carry out S6's
Step；
S4: driving power management module includes time base circuit unit, counter unit and main control chip, passes through time base circuit unit
The time sequential pulse of generation drives counter unit work, is worked by counter unit and drives main control chip work, and then master control
Chip realizes the brightness adjustment control to LED light source group module；
S5: wherein main control chip includes L1050 chip and main control chip is set as three, and wherein time base circuit unit includes
NE555 time base circuit, three main control chips are electrically connected with one group of LED light source respectively, and counter unit includes CD4024 chip, will
7 output ends of CD4024 chip are divided into three groups, i.e. Q1, Q4, Q7 is one group, and Q3, Q5 are one group, and Q2, Q6 are one group, will
Three groups of the output end of CD4024 chip are connect with three main control chips respectively；
S6: driving power management module includes time base circuit unit, counter unit, main control chip and amplifier unit, is passed through
The time sequential pulse that time base circuit unit generates drives counter unit work, is worked by counter unit and drives amplifier unit
Pwm signal is generated, the pwm signal driving main control chip of the output end output of amplifier unit is realized to LED light source group module
Brightness adjustment control；
S7: wherein main control chip includes L1050 chip and main control chip is set as three, and wherein time base circuit unit includes
NE555 time base circuit, counter unit include CD4024 chip, and amplifier unit includes MAX4477 chip and amplifier unit
Three are set as, three main control chips are electrically connected with one group of LED light source respectively, and 7 output ends of CD4024 chip are divided into three
Group, i.e. Q1, Q4, Q7 are first group, and Q3, Q5 are second group, and Q2, Q6 are third group, by the three of 7 output ends of CD4024 chip
Group is connect with three MAX4477 chips respectively；Wherein first group of the output end of CD4024 chip is respectively and on MAX4477 chip
The 74th resistance, the 76th resistance and the electrical connection of the 78th resistance, the 74th resistance, the 76th resistance and the
The common end of 78 resistance is electrically connected with the end LA+ of first MAX4477 chip, second group respectively with the 102nd resistance
It is electrically connected with the 103rd resistance, the common end and second MAX4477 of the 102nd resistance and the 103rd resistance
The end LA+ of chip is electrically connected, and third component is not electrically connected with the 90th resistance and the 92nd resistance, the 90th resistance and the 9th
The common end of 12 resistance is electrically connected with the end LA+ of third MAX4477 chip, and the end LA+ and the end LA- of MAX4477 chip are
The end IB+ of comparison circuit, MAX4477 chip is electrically connected with the 83rd resistance and the 86th resistance, MAX4477 chip
The end IB- is electrically connected with the 61st capacitor and the 85th resistance；
S8: driving power management module includes main control chip, and main control chip includes L1050 chip, and is provided on main control chip
23 resistance, the 24th resistance and the 25th resistance, the 23rd resistance, the 24th resistance and the 25th
Resistance latter end of connecting is electrically connected with the end VCC of main control chip, and the other end is electrically connected with the end GND, the 24th resistance and
The common end of 25th resistance is electrically connected with the end DIM of main control chip, and the end VCC of main control chip is through R23, R24 and R25 at this time
Divide a reference potential 2.5V.
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| CN113808547A (en) * | 2021-09-26 | 2021-12-17 | Tcl华星光电技术有限公司 | Light emitting device driving circuit, backlight module and display panel |
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