CN105722270B - The connection in series-parallel mixing color lamp device controlled based on power line edge signal - Google Patents
The connection in series-parallel mixing color lamp device controlled based on power line edge signal Download PDFInfo
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- CN105722270B CN105722270B CN201610074198.7A CN201610074198A CN105722270B CN 105722270 B CN105722270 B CN 105722270B CN 201610074198 A CN201610074198 A CN 201610074198A CN 105722270 B CN105722270 B CN 105722270B
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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]
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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
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- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The invention provides the connection in series-parallel mixing color lamp device controlled based on power line edge signal, including edge signal generator, for generating edge signal and exporting described edge signal loading on the power line；Some LED modules, each LED modules include a LED color lamps group and the edge signal for being exported according to power line drives the LED driver of the LED color lamp groups；Some LED modules are connected to the power line by connection in series-parallel hybrid mode.The present invention is by controlling the break-make of dc source to produce edge signal, it is possible to achieve the colored control of the seven of the LED of up to more than 2000, and with low cost.Extremely abundant decorative effect can be realized by being programmed by MCU.
Description
Technical field
The present invention relates to LED control technology fields, and in particular to a kind of connection in series-parallel controlled based on power line edge signal
Mix color lamp device.
Background technology
Light emitting diode (Light Emitting Diode, LED) has luminous efficiency height, reliability height, long lifespan etc.
Remarkable advantage, is particularly suitable for application to LED decorative illumination.LED Christmas lamps it is general by plurality of LEDs by series, parallel mode or
Connection in series-parallel hybrid mode be coupled, be the primary decoration product in the red-letter days such as Christmas Day, Easter, be also it is celebrating, amusement, nightscape lighting
Brightening decorative product, with wide market.
Generally, LED parallel ways due to electric current it is big, wire equivalent resistance consumes larger voltage, causes parallel connection side
Formula is not suitable for a fairly large number of LED of connection, such as more than 1000 LED application.
It is general to use connection in series-parallel mixed mode in order to realize the more LED of quantity application, and by controlling on/off real
Now flash.When supply voltage is 36V or 60V, current LED strip product in parallel all can not be realized only by power line and ground wire
Seven colored changes.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of connection in series-parallel mixing controlled based on power line edge signal
Color lamp device.
A kind of connection in series-parallel mixing color lamp device controlled based on power line edge signal, including：
Edge signal generator, for generating edge signal and exporting described edge signal loading on the power line；
Some LED modules, each LED modules include a LED color lamps group and the edge for being exported according to power line is believed
Number drive the LED driver of the LED color lamp groups；
Some LED modules are connected to the power line by connection in series-parallel hybrid mode.
Generate edge signal by edge signal generator and be loaded onto on power line and export, be on the one hand LED driver
Power supply, in addition, the edge signal of power line output is also used as the control signal of LED driver, only passes through power line and ground
Line is just flashed, color saltus step, gradually blast, color be gradually dimmed and running lamp and other effects for color, can greatly reduce institute
Need the quantity of line.
LED can be connected in series between the LED modules of series system connection.Can also be LED modules in actual applications
Connection in series-parallel mixing between LED.The connection in series-parallel mixing color lamp device based on the control of power line edge signal of the present invention is not only
Suitable for the connection in series-parallel Hybrid connections between LED modules, the connection in series-parallel between LED modules and LED and between LED is also applied for
Hybrid connections.
Described edge signal generator includes the first gate-controlled switch and pressure control circuit, first gate-controlled switch
Input connects a dc source, and output terminates power line, and the control signal output of the pressure control circuit and first can
The control end of control switch is connected to control the break-make of the first gate-controlled switch to generate edge signal and load on the power line.
By the break-make for controlling the first gate-controlled switch, you can form edge signal, and be loaded onto on power line.In the present invention
When the first gate-controlled switch is turned on, the edge signal loaded on power line is high level, when the first gate-controlled switch disconnects, power supply
The edge signal loaded on line is low level.
Preferably, the direct current power source voltage is more than 5V.Further, the direct current power source voltage be usually 12V, 24V,
36V or 60V.
Preferably, the first gate-controlled switch is P-channel field-effect transistor (PEFT) pipe, source electrode connects the dc source, drain electrode connection institute
Power line is stated, grid connects the control signal output of the pressure control circuit.
When P-channel field-effect transistor (PEFT) pipe source voltage and grid voltage difference are more than P-channel field-effect transistor (PEFT) pipe conduction threshold, P-channel
Effect pipe is turned on；When P-channel field-effect transistor (PEFT) pipe source voltage and grid voltage difference are more than P-channel field-effect transistor (PEFT) pipe breakdown voltage, P ditches
Road FET is breakdown.
Pressure control circuit of the present invention provides control signal, by controlling P-channel field-effect transistor (PEFT) tube grid voltage, realizes
As the break-make control of the P-channel field-effect transistor (PEFT) pipe of the first gate-controlled switch, and cause the P-channel field-effect transistor (PEFT) as the first gate-controlled switch
Pipe is not breakdown.
Controllable opened preferably, the pressure control circuit includes microprocessor, first resistor, second resistance and second
Close, wherein：
The microprocessor is used to export intermediate control signal, the microprocessor potential minimum end connection ground；
The input of second gate-controlled switch connects through the first resistor and the second resistance being sequentially connected in series
It is connected with the dc source, output end connection ground, control end is connected with the microprocessor；
At the series connection of the first resistor and the second resistance as the control signal output of pressure control circuit with
Output control signal.
Further, to reduce cost, described microprocessor can be single-chip microcomputer.
When the intermediate control signal that microprocessor is exported is high level, the conducting of the second gate-controlled switch, the second gate-controlled switch
Equivalent resistance be approximately equal to 0, the control signal output voltage of pressure control circuit is by first resistor and second resistance ratio
It is determined that, the difference of the control signal output voltage of pressure control circuit and the P-channel field-effect transistor (PEFT) tube grid voltage is more than the P
Channel field-effect pipe on state threshold voltage, the P-channel field-effect transistor (PEFT) pipe conducting；
Conversely, when the intermediate control signal that microprocessor is exported is low level, the second gate-controlled switch cut-off, second
The equivalent resistance of gate-controlled switch is approximately equal to infinity, P-channel field-effect transistor (PEFT) pipe source voltage and institute as the first gate-controlled switch
The difference for stating P-channel field-effect transistor (PEFT) tube grid voltage is less than the P-channel field-effect transistor (PEFT) pipe on state threshold voltage, the P-channel field-effect transistor (PEFT)
Pipe ends.
As another implementation of pressure control circuit, the pressure control circuit includes microprocessor, voltage stabilizing
Circuit, wherein：Voltage of the circuit output end of pressure-stabilizing output less than the dc source current potential；The microprocessor, which is used to export, to be controlled
Signal processed, its potential minimum end connects the circuit output end of pressure-stabilizing, and feeder ear connects the dc source, exports the control
The microprocessor output pin of signal as pressure control circuit control signal output.
Voltage difference should be such that microprocessor can normal work between mu balanced circuit voltage and dc source in the present invention
The voltage of work.
When the microprocessor output pin for exporting the control signal exports logical zero, the control signal is exported
Microprocessor output pin current potential is equal with circuit output end of pressure-stabilizing current potential, the P-channel field-effect transistor (PEFT) pipe source electrode of the first gate-controlled switch
The difference of voltage and the P-channel field-effect transistor (PEFT) tube grid voltage is more than P-channel field-effect transistor (PEFT) pipe on state threshold voltage, the P-channel
Effect pipe is turned on；When the microprocessor output pin for exporting the control signal exports logical one, the control signal is exported
Microprocessor output pin current potential it is equal with microprocessor power supply terminal potential, the P-channel field-effect transistor (PEFT) Guan Yuan of the first gate-controlled switch
The difference of pole tension and the P-channel field-effect transistor (PEFT) tube grid voltage is less than P-channel field-effect transistor (PEFT) pipe on state threshold voltage, the P-channel
FET ends.
To improve power line upper edge signal high level to low level switch speed, also gone here and there between the power line and ground
Pull-down circuit is connected to, the break-make of pull-down circuit is changeable, and in the control signal by making the edge signal loaded on power line
Turned on when switching to low level from high level, conversely, then disconnecting.
When the control that the source voltage of the P-channel field-effect transistor (PEFT) pipe of the first gate-controlled switch is exported with pressure control circuit in the present invention
When signal voltage difference processed is more than P-channel field-effect transistor (PEFT) pipe on state threshold voltage, the first gate-controlled switch is turned on, the side loaded on power line
It is high level along signal；Now, if (i.e. control signal is added by making on power line for the control signal switching of pressure control circuit output
The edge signal of load switches to low level from high level), the control that P-channel field-effect transistor (PEFT) pipe source voltage is exported with pressure control circuit
When signal voltage difference processed is less than P-channel field-effect transistor (PEFT) pipe on state threshold voltage, the first gate-controlled switch disconnects, the side loaded on power line
It is changed into low level along signal.Further, the 3rd gate-controlled switch is turned on, and power line is turned on by pull-down circuit with ground, repid discharge,
The edge signal on power line is set to be pulled low to low level rapidly by high level.
Preferably, the pull-down circuit is the 3rd gate-controlled switch, wherein：
The input of 3rd gate-controlled switch connects the power line, and output end is connected describedly, and control end is connected with second
Circuit is controlled, the second control circuit is opposite with the logic level of the output signal of first control circuit.
As a kind of implementation, the control end of the first gate-controlled switch and the 3rd gate-controlled switch is connected to the microprocessor
Different output pins, and the logic level of the output of two output pins is opposite.
As another implementation, the intermediate control signal of the output of first control circuit is negated and (connects and has taken
Circnit NOT) after be connected to the control end of the 3rd gate-controlled switch.
Preferably, being also associated with current-limiting resistance between the 3rd gate-controlled switch input and the power line.
Preferably, second gate-controlled switch, the control end of the 3rd gate-controlled switch connect pull down resistor respectively.
To ensure that gate-controlled switch has a higher response speed, described the second gate-controlled switch, the 3rd gate-controlled switch can be with
Realized using FET.Preferably, the second described gate-controlled switch, the 3rd FET of the gate-controlled switch based on N-channel
Realize, its source electrode drains as output end, grid is used as control end as input.
Preferably, the LED driver includes：
Edging trigger arithmetic element, carries out computing, and export operation result by the triggering of power line edge signal；
Charhing unit, power supply electrical level is provided for the edge signal that is inputted according to power line for edging trigger arithmetic element,
Charge, discharged when edge signal is low level when edge signal is high level；
Initialization unit, for being initialized according to described power supply electrical level to edging trigger arithmetic element.
The practical function of edging trigger arithmetic element is to carry out count operation, arithmetic fortune by edge signal triggering in the present invention
Calculation, logical operation or shift operation, or complete to be combined by computings such as count operation, arithmetical operation, logical operation, shift operations
Computing.Edging trigger arithmetic element operation result is used to generate LED drive signal.
The computing of the edging trigger arithmetic element of the LED driver of different LED modules can be different, further difference LED
The operation result of the edging trigger arithmetic element of the LED driver of module can be different.
Preferably, described edging trigger arithmetic element is edge counting unit, for the edge inputted to power line
The edge of signal is counted, and exports count results.
Described edge counting unit includes several triggers, and count results are exported with the output end of trigger.
Preferably, described trigger is d type flip flop.
Preferably, described edge counting unit includes the d type flip flop of several series connection, with the output end of d type flip flop
Count results are exported, wherein：
The clock signal input terminal of first d type flip flop is connected with power line, in two neighboring d type flip flop, and latter D is touched
The clock signal input terminal of hair device is connected with the inverse output terminal of previous d type flip flop；
The reset terminal of each d type flip flop is connected with initialization unit, and each d type flip flop inverse output terminal connects with triggering end
Connect.
Do not make specified otherwise in the present invention, first d type flip flop refers to according to the corresponding D of lowest order in edge counting unit
Trigger.Using the d type flip flop of relative low level as previous in two neighboring d type flip flop, high-order d type flip flop is as rear relatively
One.
The d type flip flop is the basic circuit of sequence circuit, and output end includes positive output end and inverse output terminal, reversely
Output end logical value is equal to positive output end logical value and negated；When reset terminal is significant level, positive output end is logical zero, when
Positive output end is logic 1 when set end is significant level, when clock signal input terminal is effective edge edge and reset terminal and set
Positive output end logical value is equal to triggering end logical value when being all inactive level at end, and otherwise output end logical value is constant.
D type flip flop effective edge edge can be rising edge, or trailing edge, select according to demand.
Described charhing unit includes asymmetrical circuit element, and the anode voltage of the asymmetrical circuit element is higher than cathode voltage
When it is conductive, cathode voltage ends when being higher than anode voltage.The anode of the asymmetrical circuit element is connected with power line, and negative electrode passes through
One energy-storage travelling wave tube is grounded, and the negative electrode that described charhing unit passes through asymmetrical circuit element is edging trigger arithmetic element and initialization
Unit provides power supply electrical level.Asymmetrical circuit element can be that individual devices or having for multiple devices composition are unidirectionally led
The circuit of electrical characteristics.
Further preferably, described LED driver also includes LED drive circuit, the input of described LED drive circuit
It is connected with the output end of edging trigger arithmetic element, output end is with corresponding LED connections to drive corresponding LED.
The LED color lamps group includes n LED, relative to n output end of the LED driver, the LED color lamps group
It is a kind of connected mode in A (n, n) number of permutations with connected mode.During connection, n LED anode is commonly connected to described
The power end of LED modules, the LED of n different colours negative electrode is connected to n output end of the LED driver.
The power end of the LED modules is the LED modules anode, and the ground terminal of the LED modules is cloudy for the LED modules
Pole.Mu balanced circuit, such as Opposite direction connection voltage-regulator diode can also be connected between LED modules anode and LED module negative electrodes.
The negative electrode of n LED in the LED color lamps group is connected to n output pin of correspondence LED driver, power line
The span of the operation result of edging trigger arithmetic element is 0~(2 in the LED driver of edge signal triggeringn- 1), pass through
Loading power line edge signal controls each LED color lamps group to realize 2nPatterns of change is planted, further, by controlling each edge to believe
The length of high level time obtains the patterns of change of edge signal interval time corresponding speed after number.
Further, in operation result scope 0~(2n- 1) several values K is selected in0、K1、...、Ku, u is whole more than 0
Number, and corresponding maintenance high level time D is set0、D1、...、Du, the corresponding color mode collection of operation result is combined into { L0、
L1、...、Lu, repetition quickly loads several edge signals so that LED driver computing within the human eye unresolvable short time
As a result it is K0Maintain high level time D0, LED driver operation result be K1Maintain high level time D1, remaining each computing knot
Fruit is held time, and LED driver operation result is KuMaintain high level time Du, realize through the above way color
Lamp group correspondence LED driver operation result is K0、K1、...、KuCorresponding color mode saltus step, further, by setting edge
High level time D after signal0、D1、...、DuLength obtains the color mode change of edge signal interval time corresponding speed.
Further, in operation result scope 0~(2n- 1) selective value K ini, i is to be less than or equal to 2 more than 0n- 1 integer, and set
Put corresponding maintenance high level time Di, corresponding color mode collection is combined into Li, repeat fast within the human eye unresolvable short time
Speed loads several edge signals and causes LED driver operation result to be KiMaintain high level time Di, then quickly load some
Individual edge signal causes LED driver operation result to be KjMaintain high level time Dj.Visually obtain by DiAnd DjRatio pair
Answer the color mode L of brightnessij.Further, as LED driver operation result KjEqual to 0 and maintain high level time D0, work as DiWith
D0Ratio is gradually ascending with the time, obtains color mode LiBy secretly to bright effect.Further, D is worked asiAnd D0Ratio is at any time
Between it is gradually descending, obtain color mode LiBy bright to dark effect.Further, by changing DiAnd D0Ratio with the time by
Arrive greatly small and then changing from small to big, it is possible to achieve effect is dodged in breathing.Further, D0Time is longer, DiTime is shorter, it is possible to achieve
Quick-fried sudden strain of a muscle effect.By changing DiAnd D0The mode that ratio is changed over time, it is possible to achieve a variety of bright light effects.
Further, color mode changes from L0→L1→..→LuLED color lamps group, color mode change is from L1→L2
→...→Lu→L0Color lamp group, color mode change is from L2→L3→...→Lu→L0→L1LED color lamps group ..., color
Patterns of change is from Lu→L0→L1→...→Lu-1LED color lamp groups flowing water effect is obtained in visual effect, further, pass through
Set and high level time D is maintained after edge signal0、D1、...、DuLength obtains the flowing water of edge signal interval time corresponding speed
Effect.
The connection in series-parallel hybrid mode is connected in parallel on the power line and the ground wire including Q LED strip joint group, and Q is more than 0
Integer, the LED modules quantity of each LED strip joint group can be different.As connection in series-parallel hybrid mode includes Q0、Q1、...、
QserIndividual LED strip joint group, each LED strip joint group is to that should have NUMQ0、NUMQ1、...、NUMQserThe individual LED modules, NUMQ0、
NUMQ1、...、NUMQserFor the integer more than 0, NUMQ0、NUMQ1、...、NUMQserIt can be not mutually equal.
The LED strip joint group is connected several LED and joint group, and the LED modules quantity of each LED and joint group can be different.
Such as P LED of LED strip joint group series connection and joint group, P LED parallel connection group is respectively PARR0、PARR1、...、PARRP.Preferably,
PARR0Negative electrode connection ground wire, anode connection PARR1Negative electrode, PARR1Anode connect the negative electrode of next LED and joint group,
The like, last LED and joint group PARRPThe described power line of anode connection, form described LED strip joint group.P
The LED modules quantity of each LED and joint group can be different in LED and joint group.Preferably, each LED in P LED and joint group
And the LED module quantity of joint group is equal.
The LED and joint group several LED modules in parallel, each LED module anode link together, LED module negative electrodes
Link together.
Preferably, the microprocessor obtains supply voltage by mu balanced circuit from the dc source.
Compared with prior art, the present invention controls the break-make of the dc source more than 5V by pressure control circuit, produces
Edge signal, realizes the connection in series-parallel mixing color lamp controlled based on power line edge signal, it is possible to achieve up to more than 2000
LED control, it is and with low cost.Extremely abundant decorative effect can be realized by being programmed by MCU.
Brief description of the drawings
Fig. 1 is the connection in series-parallel mixing color lamp device controlled based on power line edge signal of the present embodiment；
Fig. 2 is LED connected mode schematic diagrams in the LED modules of the present embodiment, wherein (a), (b), (c) represent difference respectively
Connected mode；
Fig. 3 is the structured flowchart of the LED driver of the present embodiment；
Fig. 4 is the circuit theory diagrams of the edging trigger arithmetic element of the present embodiment；
Fig. 5 is the circuit theory diagrams of the charhing unit of the present embodiment；
Fig. 6 is the circuit theory diagrams of the initialization unit of the present embodiment；
The timing diagram for the arithmetic operating apparatus that Fig. 7 triggers for the power line edge signal of the present embodiment.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Such as Fig. 1 and as shown in Fig. 2 the connection in series-parallel mixing color lamp dress controlled based on power line edge signal of the present embodiment
Put, including：
Edge signal generator, for generating edge signal and exporting described edge signal loading on the power line；
Some LED modules, each LED modules include a LED color lamps group and the edge for being exported according to power line is believed
Number drive the LED driver of the LED color lamp groups；
12 LED modules, respectively M are had in the present embodiment11、M12、M13、M14、M21、M22、M23、M24、M25、M26、M27、
M28, all LED modules are connected to power line by connection in series-parallel hybrid mode.
Edge signal generator includes the first gate-controlled switch and pressure control circuit, and the input of the first gate-controlled switch is connected
One dc source, output termination power line, the control signal output of institute's pressure control circuit and the control of the first gate-controlled switch
End is connected to control the break-make (i.e. conducting is with disconnecting) of the first gate-controlled switch to generate edge signal and load on the power line.
First gate-controlled switch of the present embodiment is P-channel field-effect transistor (PEFT) pipe CJ2301 (P1), and its source electrode is straight as input termination
Power supply (+18V power supplys) is flowed, drain electrode is connected as output end with power line, and grid is defeated with pressure control circuit as control end
Go out end (i.e. control signal output) connection.
Pressure control circuit includes：Microprocessor, first resistor, second resistance and the second gate-controlled switch, wherein：
Microprocessor is used to export intermediate control signal, microprocessor potential minimum end connection ground；
Microprocessor is EM78P153S type single-chip microcomputers, its pin 9 output intermediate control signal in the present embodiment.Pin 11
For grounding pin, pin 4 is supply input pin.
Supply voltage needed for EM78P153S type single-chip microcomputers is 5V, to avoid setting up 5V dc source, directly using voltage stabilizing
Circuit, is reduced to 5V by 18V DC voltage and is powered for single-chip microcomputer.
The present embodiment mu balanced circuit includes divider resistance R6 and voltage-regulator diode D1, divider resistance R6 one end connection direct current
Power supply (+18V power supplys), other end connection voltage-regulator diode D1 negative electrode is powered as voltage output end for single-chip microcomputer, voltage stabilizing two
The anode connection ground of pole pipe (D1), voltage-regulator diode D1 negative electrode is also grounded by electric capacity C1.
The input of second gate-controlled switch connects through the first resistor R1 and second resistance R2 and direct current being sequentially connected in series
Source is connected, and output end connection ground, control end is connected the intermediate control signal of the output to receive microprocessor with microprocessor；
As the control signal output of pressure control circuit to export at first resistor R1 and second resistance R2 series connection
Control signal.
Second gate-controlled switch is CJ2302 type N-channel FET N1, and its source electrode is used as output as input, drain electrode
End, grid is used as control end.
The input of second gate-controlled switch connects through the first resistor R1 and second resistance R2 and direct current being sequentially connected in series
Source connection, output end connection ground, control end and microprocessor, which connect the middle control exported to receive the pin 9 of microprocessor, to be believed
Number；
As the control signal output of pressure control circuit to export at first resistor R1 and second resistance R2 series connection
Control signal.
When the pin 9 of microprocessor exports high level, the second gate-controlled switch is turned on, FET P1 source voltages and grid
The difference of pole tension is more than the edge signal loaded on P-channel field-effect transistor (PEFT) pipe on state threshold voltage, FET P1 conductings, power line
For high level；
When one output pin of microprocessor is low level, the second gate-controlled switch cut-off, FET P1 source electrodes
The difference of voltage and grid voltage is less than what is loaded on P-channel field-effect transistor (PEFT) pipe on state threshold voltage, FET P1 cut-offs, power line
Edge signal is low level.
Low level speed is switched to by high level to improve the edge signal loaded on power line, between power line and ground
Pull-down circuit is also serially connected with, pull-down circuit is the 3rd gate-controlled switch.
The input of 3rd gate-controlled switch connects the power line, and output end is connected describedly, and control end is connected with second
Circuit is controlled, second control circuit is opposite with the logic level of intermediate control signal.
Current-limiting resistance is also associated between 3rd gate-controlled switch input and the power line.
The 3rd gate-controlled switch is CJ2302 type N-channel FET N2 in the present embodiment, and its source electrode is used as input, drain electrode
As output end, grid is used as control end.
Conveniently, second control circuit and the 3rd control circuit use chip microcontroller, by FET N2 grid
Pole connects the pin 8 of EM78P153S single-chip microcomputers.
When the pin 9 of EM78P153S single-chip microcomputers is output as high level, led as the first gate-controlled switch FET P1
Logical, now, the output low level of pin 8 of EM78P153S single-chip microcomputers is ended, electricity as the FET N2 of the 3rd gate-controlled switch
The edge signal loaded on the line of source is down for high level.
Now, if the pin 9 of EM78P153S single-chip microcomputers is output as low level, it is used as the first gate-controlled switch field-effect
Pipe P1 ends, now, the output high level of pin 8 of EM78P153S single-chip microcomputers, is led as the FET N2 of the 3rd gate-controlled switch
Logical, power line is discharged by the 3rd gate-controlled switch to ground, rapidly by the edge signal loaded on power line down for low level.
It can be seen that, the break-make of pull-down circuit is changeable, and in control signal by making the edge signal that the first gate-controlled switch is exported
Turned on when switching to low level for high level, conversely, then disconnecting.
The present embodiment as between the FET N1 of the second gate-controlled switch grid and ground connect pull down resistor R4, as
Pull down resistor R5 is connected between the FET N2 of 3rd gate-controlled switch grid and ground.
As shown in figure 3, the LED driver of the present embodiment includes：
Edging trigger arithmetic element, carries out computing, and export operation result by the triggering of power line edge signal；
Charhing unit, power supply electrical level is provided for the edge signal that is inputted according to power line for edging trigger arithmetic element,
Charge, discharged when edge signal is low level when edge signal is high level；
Initialization unit, for being initialized according to described power supply electrical level to edging trigger arithmetic element；
And LED drive circuit, for the corresponding driving of operation result output exported according to edging trigger arithmetic element
Signal is to drive corresponding LED color lamps group.The present embodiment LED drive circuit is 3 NMOS tubes, and each NMOS tube grid correspondence connects
The output end of edging trigger arithmetic element is connected on, the source electrode of each NMOS tube connects the ground of LED driver, the drain electrode of each NMOS tube
It is connected to the output end of LED driver.
Fig. 4 is the edging trigger arithmetic element of the present embodiment, including 3 d type flip flops in parallel and 3 arithmetical logics
Unit, operation result is exported with the output end of each d type flip flop.
D type flip flop in the present embodiment is that the rising edge clock resetted with low level triggers d type flip flop, respectively the first D
Trigger F1, the second d type flip flop F2 and 3d flip-flop F3, corresponding positive output end is respectively Q1, Q2 and Q3, corresponding
Operation result is followed successively by Q1, Q2, Q3 from low to high.The triggering end of each d type flip flop respectively with ALU corresponding positions
Output end is connected, i.e. D1, which connects C1, D2 and connects C2, D3, connects C3.
The reset terminal (including RD1, RD2 and RD3) of each d type flip flop is connected with the output end of initialization unit, by first
Beginningization unit carries out initially putting number to d type flip flop.
Clock signal input terminal (including CK1, CK2 and CK3) is connected with power line, and the edge signal inputted by power line is touched
Hair carries out arithmetical operation.
Edging trigger arithmetic element is three adders, the A group inputs of the edging trigger arithmetic element in the present embodiment
A1, A2 and A3 are followed successively by from low to high, and B group inputs are followed successively by B1, B2 and B3 from low to high, and output end is followed successively by from low to high
C1, C2 and C3.Output end of the A groups input of ALU respectively with the d type flip flop of corresponding positions be connected (i.e. Q1 connect A1,
Q2 meets A2, Q3 and meets A3).The external Schema control constant of B group inputs.Schema control constant can be put according to user's request
Number.
Fig. 5 is the physical circuit of the charhing unit of the present embodiment, includes diode D, diode D anode and power line company
Connect, negative electrode is grounded that (charging capacitor is the metal-oxide-semiconductor equivalent capacity of source and drain short circuit, equivalent electric in the present embodiment by an energy-storage travelling wave tube C
The size of appearance is 0.2 μ F).The negative electrode that whole charhing unit passes through diode D is edging trigger arithmetic element and initialization unit
Power supply electrical level is provided.
Fig. 6 is the circuit theory diagrams of initialization unit, including four metal-oxide-semiconductors, respectively p-channel metal-oxide-semiconductor T1, p-channel MOS
Pipe T2, n-channel metal-oxide-semiconductor T3 and n-channel metal-oxide-semiconductor T4, the first phase inverter V1, the second phase inverter V2.Specific annexation is as follows：
Metal-oxide-semiconductor T1 source electrode and drain electrode are connected to the negative electrode of diode D1 in charhing unit, the leakage of grid and metal-oxide-semiconductor T3
Pole is connected, and metal-oxide-semiconductor T3 grid is connected with metal-oxide-semiconductor T1 source electrode, metal-oxide-semiconductor T3 source grounds.Metal-oxide-semiconductor T2 grid and source electrode point
It is not connected with metal-oxide-semiconductor T1 grid and source electrode, (size of current-limiting resistance is in the present embodiment after the current-limiting resistance R of drain series one
500 Ω), be connected with metal-oxide-semiconductor T4 grid, and metal-oxide-semiconductor T4 drain electrode and source electrode respectively with metal-oxide-semiconductor T3 source electrode and be connected.
Metal-oxide-semiconductor T4 grid connects the first phase inverter V1 inputs, and the first phase inverter V1 output end connection second is anti-phase
Device V2 inputs, the second phase inverter V2 output exports multiple as the output end of initialization unit to edging trigger arithmetic element
Position signal.
The operation principle of the arithmetic operating apparatus of the power line edge signal triggering of the present embodiment is as follows：
When the arithmetic unit upper electricity, the power supply electrical level that charhing unit is provided is low level, now initialization unit and
Edging trigger arithmetic element electricity shortage, whole arithmetic unit is unable to computing.
When electricity on arithmetic unit, and when edge signal is high level, the energy-storage travelling wave tube C in charhing unit is electrically charged.
In the case of high level lasting time is sufficiently long, power supply electrical level is high level, initialization unit and edge by low level upset
Arithmetic element is triggered by normal power supply.
Now, the metal-oxide-semiconductor T3 conductings in initialization unit, turn on metal-oxide-semiconductor T2, therefore, and charhing unit can pass through limit
Leakage resistance R charges to the metal-oxide-semiconductor T4 as electric capacity.In to metal-oxide-semiconductor T4 charging processes, the voltage of metal-oxide-semiconductor T4 grids gradually increases
Greatly, initialization is completed after being charged to and reaching so that the reset signal that the second phase inverter V2 is exported is overturn to high level by low level.
Second phase inverter V2 output end is connected with the reset terminal of each d type flip flop in edging trigger arithmetic element, when
When second phase inverter V2 exports low level, each d type flip flop is resetted, i.e., edging trigger arithmetic element is reset.
Fig. 7 is edge signal, initialization unit and the three adder B group inputs of power line input in the present embodiment
Schema control constant operation result when being Binary Zero 01 time diagram, wherein operation result is using three d type flip flops
The output signal of positive output end is represented.After power supply electrifying, logical zero, i.e. computing knot are reset in three d type flip flops of T time
Fruit resets.At the rising edge E1 of edge signal, operation result is Binary Zero 01；Rise on the power line along E2, operation result is
Binary Zero 10；Rise on the power line along E3, operation result is Binary Zero 11；Rise on the power line along E4, operation result is two
System 100；Rise on the power line along E5, operation result is binary one 01；Rise on the power line along E6, operation result enters for two
System 110；Rise on the power line along E7, operation result is binary one 11；Rise on the power line along E8, arithmetic unit overflows, computing
As a result it is Binary Zero 00, the operation result of edging trigger arithmetic element takes in the LED driver of power line edge signal triggering
It is 0~(2 to be worth scope3-1)。
In the present embodiment, the edging trigger arithmetic element computing in the same manner of the LED driver of all LED modules.
The present embodiment includes several LED modules, and each LED modules include a LED color lamps group and for according to power supply
The LED driver of the edge signal driving LED colored lantern group of line output.
Each LED color lamps group includes the LED of 3 different colours, respectively feux rouges, green glow and blue streak in the present embodiment.
The present embodiment is connected in parallel on the power line and the ground wire including 2 LED strip joint groups.
First LED strip joint group includes 4 LED modules, respectively M11、M12、M13、M14, 4 LED of the first LED strip joint group
Parallel connection group includes a LED module respectively, and 4 LED parallel connection groups of the first LED strip joint group are respectively M11、M12、M13、M14, M11's
Negative electrode connection ground, anode connection M12Negative electrode, M12Anode connection M13Negative electrode, M13Anode connects M14Negative electrode, M14Anode is connected
Power line.
Second LED strip joint group includes 8 LED modules, respectively M21、M22、M23、M24、M25、M26、M27、M28；2nd LED
Series connection group includes 4 LED modules, is respectively：M21、M22Parallel connection constitutes the first of the second LED strip joint group and joint group, M21Anode
And M22Anode be connected to become the second LED strip joint group first and joint group anode, M21Negative electrode and M22Negative electrode be connected to become
Second LED strip joint group first and joint group negative electrode；M23、M24Parallel connection constitutes the second of the second LED strip joint group and joint group, M23's
Anode and M24Anode be connected to become the second LED strip joint group second and joint group anode, M23Negative electrode and M24Negative electrode connection
Second and the negative electrode of joint group as the second LED strip joint group；M25、M26Parallel connection constitutes the 3rd of the second LED strip joint group and joint group,
M25Anode and M26Anode be connected to become the second LED strip joint group the 3rd and joint group anode, M25Negative electrode and M26Negative electrode
It is connected to become the 3rd of the second LED strip joint group the and the negative electrode of joint group；M27、M28Parallel connection constitutes the 4th parallel connection of the second LED strip joint group
Group, M27Anode and M28Anode be connected to become the second LED strip joint group the 4th and joint group anode, M27Negative electrode and M28's
Negative electrode is connected to become the 4th of the second LED strip joint group the and the negative electrode of joint group.First and the negative electrode of joint group of the second LED strip joint group connect
Ground, the first of the second LED strip joint group and the negative electrode of the second simultaneously joint group of anode and the second LED strip joint group of joint group be connected, second
Simultaneously the anode of joint group is connected the second of LED strip joint group with the negative electrode of the 3rd of the second LED strip joint group and joint group, the second LED strip connection
Simultaneously the anode of joint group is connected the 3rd of group with the negative electrode of the 4th of the second LED strip joint group and joint group, and the 4th of the second LED strip joint group the
And the anode connection power line of joint group.
LED connected mode is as shown in Fig. 2 wherein as shown in (a) in the LED modules of each in the present embodiment, LED modules
M11、M12、M13、M14Three output end little-endians of LED driver connect red-light LED (i.e. R in figure), green glow respectively
LED (i.e. G in figure) and blue streak LED (i.e. B in figure)；As shown in (b), LED modules M21、M23、M25、M27In LED driver
Three output end little-endians connect blue streak LED, red-light LED and green light LED respectively；As shown in (c), LED modules M22、
M24、M26、M28Three output end little-endians of LED driver connect green light LED, blue streak LED and red-light LED respectively.
After power supply electrifying, logical zero is reset in three d type flip flops of T time, i.e. edging trigger arithmetic element is output as
Zero, each LED in all LED modules is dark.LED to light situation as follows：
At the rising edge E1 of edge signal, operation result is Binary Zero 01, LED modules M11、M12、M13、M14Middle feux rouges
LED is bright, LED modules M21、M23、M25、M27Middle blue streak LED is bright, LED modules M22、M24、M26、M28Middle green light LED is bright；
Rise on the power line along E2, operation result is Binary Zero 10, LED modules M11、M12、M13、M14Middle green light LED is bright,
LED modules M21、M23、M25、M27Middle red-light LED is bright, LED modules M22、M24、M26、M28Middle blue streak LED is bright；
Rise on the power line along E3, operation result is Binary Zero 11, LED modules M11、M12、M13、M14Middle red-light LED and green
Light LED is bright, LED modules M21、M23、M25、M27Middle red-light LED and blue streak LED is bright, LED modules M22、M24、M26、M28Middle blue led
It is bright with green light LED；
Rise on the power line along E4, operation result is binary one 00, LED modules M22、M24、M26、M28Middle blue streak LED is bright,
LED modules M21、M23、M25、M27Middle green light LED is bright, LED modules M21、M23、M25、M27Middle red-light LED is bright；
Rise on the power line along E5, operation result is binary one 01, LED modules M11、M12、M13、M14Middle red-light LED and orchid
Light LED is bright, LED modules M11、M12、M13、M14Middle green light LED and blue streak LED is bright, LED modules M22、M24、M26、M28Middle red-light LED
It is bright with green light LED；
Rise on the power line along E6, operation result is binary one 10, LED modules M11、M12、M13、M14Middle blue streak LED and green
Light LED is bright, LED modules M21、M23、M25、M27Middle green light LED, red-light LED are bright, LED modules M21、M23、M25、M27Middle red-light LED
It is bright with blue streak LED；
Rise on the power line along E7, operation result is red-light LED, green light LED, orchid in binary one 11, all LED modules
Light LED is bright；
Rise on the power line along E8, arithmetic unit overflows, operation result is Binary Zero 00, the feux rouges of all LED modules
LED, green light LED, blue streak LED are dark.
The LED color lamps device of the present embodiment generates edge signal when realizing color light control by edge signal generator
And be loaded onto on power line, to light the LED of corresponding color in LED groups, realize different color lamp effects.
By controlled loading edge signal on the power line control each color lamp group realize it is red, green, blue, red it is green, red it is blue,
It is green blue, red green blue, complete dark, that is, 7 kinds of colored, complete dark 8 kinds of color modes altogether.After each rising edge in control figure 7
High level hold time as 1 second, so that it may obtain the interval 7 colored saltus steps of 1 second.Change the height electricity after each rising edge in Fig. 7
It is flat to hold time, it is possible to obtain seven colored saltus steps of corresponding speed.
For example：1,2,4 are selected in operation result scope 0~7, and it is all 1 second to set corresponding high level to hold time,
The corresponding color mode collection of operation result is combined into { red, green, orchid } in the present embodiment.Zero is output as in edging trigger arithmetic element,
LED modules M11Three LED all in the state of dark, loading low level time is 100ns as shown in Figure 7 rising edge E1, LED
Driver operation result is 1 maintenance high level time 1 second；Load the rising edge E2 that low level time is 100ns, LED driver
Operation result is 2 maintenance high level time 1 second；Load the rising edge E that low level time is 100ns3, LED driver computing knot
Fruit is 3, maintains high level time 100ns, the rising edge E that loading low level time is 100ns4, LED driver operation result is
4 maintain high level time 1 second.By the above-mentioned means, because human eye can not be differentiated to the short time, (i.e. the persistence of vision of human eye is imitated
Should), the present embodiment LED modules M11Obtain red, green, the three color saltus steps of 1 second color interval time of three kinds of blue.Further,
By the three color saltus steps for setting high level time length acquisition edge signal interval time corresponding speed after edge signal.
Realize through the above way LED driver operation result successively from 1 → 2 → 4 saltus step, LED color lamp groups M11、M12、
M13、M14Color mode changes from red → green → blue, color lamp group M21、M23、M25、M27Color mode changes from orchid → red → green, LED
Color lamp group M22、M24、M26、M28Color mode change is from green → blue → red, and whole lamp string obtains red, blue, green three in visual effect
The flowing water effect of color.Further, by setting high level time length after edge signal to obtain edge signal interval time correspondence
The flowing water effect of speed.To ensure in calculating process, initialization unit and edging trigger arithmetic element being capable of normal power supplies, edge
When low level duration is necessarily less than that energy-storage travelling wave tube C is discharged to low level electric discharge by high level in charhing unit in signal
It is long.
Further, since the one-way conduction effect of diode, charging capacitor will not carry out back discharge to power line during electric discharge.
The LED driver of the present embodiment inputs edge signal merely with power line, triggers computing by edge signal, makes control
Driver element driving completion LED processed seven colorful light-emittings, seven color combinations saltus steps, flowing water effect, it is not necessary to special signal wire
Transmit control signal.Compared with prior art, the present invention controls the break-make of the dc source more than 5V by pressure control circuit,
Produce edge signal, it is possible to achieve the colored control of the seven of the LED of up to more than 2000, and it is with low cost.Can by MCU programmings
To realize extremely abundant decorative effect.
Technical scheme and beneficial effect are described in detail above-described embodiment, Ying Li
Solution is to the foregoing is only presently most preferred embodiment of the invention, is not intended to limit the invention, all principle models in the present invention
Interior done any modification, supplement and equivalent substitution etc. are enclosed, be should be included in the scope of the protection.
Claims (8)
1. a kind of connection in series-parallel mixing color lamp device controlled based on power line edge signal, it is characterised in that including：
Edge signal generator, for generating edge signal and exporting described edge signal loading on the power line；It is described
Edge signal generator includes the first gate-controlled switch and pressure control circuit, and the input of the first gate-controlled switch connects a direct current
Source, the output termination power line, the control signal output of pressure control circuit is connected with the control end of the first gate-controlled switch
For control the first gate-controlled switch break-make with generate edge signal and load on the power line；
Some LED modules, each LED modules include a LED color lamps group and the edge signal for being exported according to power line drives
Move the LED driver of the LED color lamp groups；
Some LED modules are connected to the power line by connection in series-parallel hybrid mode；
The pressure control circuit includes microprocessor, first resistor, second resistance and the second gate-controlled switch, wherein：
The microprocessor is used to export intermediate control signal, microprocessor potential minimum end connection ground；
The input of second gate-controlled switch connects through the first resistor being sequentially connected in series and second resistance is connected with dc source, defeated
Go out end connection ground, control end is connected the intermediate control signal of the output to receive microprocessor with microprocessor；
As the control signal output of pressure control circuit with output control signal at the series connection of first resistor and second resistance.
2. the connection in series-parallel mixing color lamp device as claimed in claim 1 controlled based on power line edge signal, it is characterised in that
The direct current power source voltage is more than 5V.
3. the connection in series-parallel mixing color lamp device as claimed in claim 2 controlled based on power line edge signal, it is characterised in that
First gate-controlled switch is P-channel field-effect transistor (PEFT) pipe, and source electrode connects the dc source, the drain electrode connection power line, grid
Connect the control signal output of the pressure control circuit.
4. the connection in series-parallel mixing color lamp dress controlled based on power line edge signal as described in any one in claims 1 to 3
Put, it is characterised in that pull-down circuit is also serially connected between the power line and ground, the break-make of pull-down circuit is changeable, and in institute
State when control signal switches to low level by the edge signal for making to load on power line from high level and turn on, conversely, then disconnecting.
5. the connection in series-parallel mixing color lamp device as claimed in claim 4 controlled based on power line edge signal, it is characterised in that
The pull-down circuit is the 3rd gate-controlled switch, wherein：
The input of 3rd gate-controlled switch connects the power line, and output end connection ground, control end is connected with second control circuit,
Second control circuit is opposite with the logic level of intermediate control signal.
6. the connection in series-parallel mixing color lamp device as claimed in claim 4 controlled based on power line edge signal, it is characterised in that
The pressure control circuit includes microprocessor, mu balanced circuit, wherein：
Mu balanced circuit voltage input end connects the dc source, for exporting the voltage less than the dc source current potential；
The microprocessor is used for output control signal, and its feeder ear connects the dc source, and the connection of potential minimum end is described
Circuit output end of pressure-stabilizing.
7. the connection in series-parallel mixing color lamp device as claimed in claim 6 controlled based on power line edge signal, it is characterised in that
LED can be connected in series between the LED modules of series system connection.
8. the connection in series-parallel mixing color lamp device as claimed in claim 7 controlled based on power line edge signal, it is characterised in that
The LED driver includes：
Edging trigger arithmetic element, carries out computing, and export operation result by the edge signal triggering from the power line；
Charhing unit, provides power supply electrical level for edging trigger arithmetic element for the edge signal that is inputted according to power line, works as institute
The edge signal stated charges when being high level, is discharged when edge signal is low level；
Initialization unit, for being initialized according to described power supply electrical level to edging trigger arithmetic element.
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| CN108567401B (en) * | 2017-03-07 | 2022-01-14 | 郭岳荣 | Multispectral switching optical fiber lighting laryngoscope |
| CN107241827B (en) * | 2017-06-07 | 2023-09-12 | 欧普照明股份有限公司 | Switching circuit |
| CN110730536B (en) * | 2019-11-01 | 2021-11-19 | 杭州昀芯光电科技有限公司 | Colour lamp device controlled by power line edge signal |
| CN112105114B (en) * | 2020-08-03 | 2023-03-21 | 江苏彩汇芯电子科技有限公司 | Lamp bead chip set and control method thereof, and colored lamp device and control method thereof |
| US11737185B2 (en) * | 2020-08-19 | 2023-08-22 | Jiangsu Caihuixin Electronic Technology Co., Ltd. | LED control system using modulated signal |
| CN114364096A (en) * | 2021-12-29 | 2022-04-15 | 杭州昀芯光电科技有限公司 | Bidirectional luminous power line pulse signal trigger light source, lamp string and control device thereof |
| CN116782454A (en) * | 2022-03-08 | 2023-09-19 | 杭州昀芯光电科技有限公司 | Bidirectional light-emitting power line pulse signal trigger lamp beads |
| CN114867150A (en) * | 2022-05-30 | 2022-08-05 | 杭州昀芯光电科技有限公司 | Series-parallel power line pulse signal triggering operation bidirectional colored lamp |
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Effective date of registration: 20180522 Address after: 310012 1 unit 401-1, Wen Yi Xi Road 998, Wuchang Street, Yuhang District, Hangzhou, Zhejiang, China 401-1 Patentee after: Hangzhou Yun core Photoelectric Technology Co. Ltd. Address before: 310027 No. 38, Zhejiang Road, Hangzhou, Zhejiang, Xihu District Patentee before: Luo Xiaohua |