CN107295730A - A kind of method that single live wire sends the brightness control signal of the multiple LEDs of control - Google Patents
A kind of method that single live wire sends the brightness control signal of the multiple LEDs of control Download PDFInfo
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- 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
A kind of method that single live wire sends the brightness control signal of the multiple LEDs of control, the wall control switch element realization that module is constituted is given by single fire-wire power module, single chip control module, phase shift drive module, zero passage detection module, brightness, the brightness of multiple LEDs can be adjusted with independent control.When brightness changes, wall control switch element send it is being controlled using phase-shifting trigger, by guiding waveform, address waveform and data sets of waveforms into brightness control signal, brightness control signal includes 2 ternary address code data and 2 ternary brightness datas.When not sending brightness control signal, the voltage waveform on single live wire is continuous whole single-phase sine wave.The wall controlled LED lamp light-dimming method is without remote control, without individually laying control line, without laying power line again, it is possible to achieve the replacement upgrading of general lighting lamp.
Description
Present patent application is divisional application, and original bill Application No. 201510229100.6, the applying date is on May 8th, 2015,
A kind of method of entitled single multiple LED brightness of live wire far distance controlled.
Technical field
The present invention relates to a kind of lighting lamp control technology, especially a kind of single live wire sends the brightness of the multiple LEDs of control
The method of control signal.
Background technology
Due to the nonlinear characteristic of LED, the brightness of LED can not be realized by the way of regulation voltage.
When the brightness of LED is adjusted using controllable constant-current source, the change of operating current can bring the chromatogram of LED inclined
Move, meanwhile, LED load current also becomes very low under low-light level, can increase the reduction of controllable constant-current source efficiency and temperature rise, be lost
Power consumption on driving chip is bigger, so that the life-span of constant-current source and LED/light source can be damaged.
LED brightness is controlled using PWM (pulsewidth modulation) dimming mode, voltage regulating mode can be avoided and current system band is adjusted
The problem of coming.Conventional LED light-dimming method has three kinds at present：
One is to use remote control control.LED control circuit is equipped with remote control device, can be by remote control to LED
Progress has level light modulation either stepless dimming, and it has the disadvantage that a LED needs to be equipped with a remote control, causes remote control quantity
Many, management trouble, cost is also higher.
Two be to use digital control technology.For example, using DALI (lighting interface of digital address) technology, DALI systems
Software can be separately addressed to the single or multiple LED lamps on same forceful electric power loop or different circuit, pass through DALI systems
Software to single lamp or arbitrary lamp group accurately dim and switch controlling.Program advanced technology, but cost is very high, system
In addition to needing to lay power line, in addition it is also necessary to lay control line.
Three be using single live wire switch on and off control technology.For example, using NU102 special chips, you can utilize common wall
Face switchs the switch motion within the defined time, realizes the brightness regulation of LED.But this method can only provide 4 grades of LEDs
Brightness is adjusted, and switch motion has time requirement.
The content of the invention
The purpose of the present invention aims to provide one kind in the case where not changing existing illuminating line wiring, utilizes single live wire to send out
The method for sending the brightness control signal dimmed to multiple LEDs.
To reach above-mentioned purpose, the present invention is adopted the technical scheme that：A kind of single live wire sends the bright of the multiple LEDs of control
The method of control signal is spent, is realized by wall control switch element, the brightness for controlling K LED, K is, more than or equal to 1, to be less than
Integer equal to 9；The wall control switch element is provided with single live wire input, single fire wire output end；Single live wire input connects
It is connected to AC power live wire；The brightness of K LED adjusts driver element control by K LED respectively, and LED regulation driving is single
Member is provided with live wire input, zero line input；The live wire input of the K LED regulation driver element is connected to wall control
Single fire wire output end of switch element, zero line input are connected to AC power zero line；The AC power is single-phase 220V
Alternating current.
The wall control switch element is by single fire-wire power module, single chip control module, phase shift drive module, zero passage detection
Module, brightness give module composition.
The LED regulation driver element is made up of single-chip microcomputer adjustment module, LED drive module.
The wall control switch element sends brightness control signal by the voltage waveform for controlling single fire wire output end to export,
Its method is,
Step A, judges whether to close LED, is to close LED, into LED state is closed, go to step D；Otherwise it is
Non- closing LED state, goes to step B；
Step B, determines the address code and brightness degree of brightness control signal；
Step C, sends a brightness control signal；
Step D, judges whether brightness Setting signal changes, and brightness Setting signal changes, return to step A；Brightness is given
Determine signal not change, return to step C.
The maintenance does not send brightness control signal state, and when being in closing LED state, single fire wire output end flows through
Micro-current；The maintenance does not send brightness control signal state, and when being in non-closing LED state, single fire wire output end is defeated
The voltage waveform gone out is continuous whole single-phase sine wave.
It is described to send a brightness control signal, including sequentially send guiding waveform, address waveform and data waveform.
The negative half-wave that is not turned on by one of guiding waveform, immediately the positive half-wave composition that completely turns on；It is described to draw
The complete cycle that guided wave shape can also be not turned on by one, immediately one completely turn on positive half-wave composition.
The address waveform is made up of the phase shift waveform of a cycle, and it is phase shifting angle γ to bear half-wave1, positive half-wave is phase shifting angle
γ0。
The data waveform is made up of the phase shift waveform of a cycle, and it is phase shifting angle β to bear half-wave1, positive half-wave is phase shifting angle β
0。
The phase shifting angle γ1, phase shifting angle γ0, phase shifting angle β1, phase shifting angle β0Value can be respectively phase shifting angle α2、α1、α0In
One, phase shifting angle α2、α1、α0Trit code value 2,1,0 is corresponded to respectively.The phase shifting angle α2、α1、α0Meet α2<α1<α0's
Relation, representative value is α2=30 °, α1=60 °, α0=90 °.
The LED regulation driver element can carry out address code setting, and address code is represented by 2 ternary datas.
The brightness degree of the LED is represented by 2 ternary brightness datas.
The LED regulation driver element receives brightness control signal by single-chip microcomputer adjustment module and controls brightness, its side
Method is,
Step one, initialize, it is original intensity to control LED；
Step 2, judges whether there is brightness control signal on single live wire；There is no brightness control signal, return to step two；There is brightness
Control signal, goes to step 3；
Step 3, receives brightness control signal, obtains 2 ternary address codes and 2 ternary brightness datas；
Step 4, determines whether target LED；It is not target LED, return to step two；It is target LED, goes to step
Five；
Step 5, changes LED brightness, return to step two.
Described to judge whether there is brightness control signal on single live wire, method is to judge whether there is brilliance control letter on single live wire
Number guiding waveform.
The reception brightness control signal, obtains 2 ternary address codes and 2 ternary brightness datas, and method is side
Method is measurement address waveform, the negative half-wave angle of flow, the positive half-wave angle of flow of data waveform successively, and calculating obtains negative half-wave phase shifting angle
After positive half-wave phase shifting angle, reconvert is into 2 ternary address codes and 2 ternary brightness datas.
It is described to determine whether target LED, method be judge 2 ternary address codes receiving whether with this LED
2 ternary address codes of lamp regulation driver element setting are consistent；It is consistent, is target LED；It is inconsistent, it is not mesh
Mark LED.
The change LED brightness, the PWM for being connected to LED regulation driver element by the change of single-chip microcomputer adjustment module is bright
The dutycycle for spending Regulate signal is realized.
The phase shifting angle β1For a high position for 2 ternary brightness datas, phase shifting angle β0For the low of 2 ternary brightness datas
Position；The phase shifting angle γ1For a high position for 2 ternary address codes, phase shifting angle γ0For the low level of 2 ternary address codes.
The brightness degree of the LED is represented by 2 ternary brightness datas, specifically, brightness degree is brightness respectively
1-9, brightness 1-9 are corresponding with 2 ternary brightness datas 00,01,02,10,11,12,20,21,22 successively.
Described to send guiding waveform, method is that single chip control module stops trigger signal output at random, waits zero passage inspection
Survey the zero cross signal of module output；A trigger pulse for being no more than 10ms is sent in the falling edge of zero cross signal.
The zero cross signal is produced after single chip control module stops trigger signal output at random, is negative with AC power
Half-wave correspondence and width close to 10ms positive pulse.
When the LED is in closed mode, single chip control module stops output trigger signal.
Single fire-wire power module has single live wire OFF state current-taking function and ON state current-taking function, for being switched to wall control
Unit provides working power.
The zero passage detection module is halfwave rectifier bleeder circuit, can detect the zero cross signal of the AC power, and
It is supplied to single chip control module.
The brightness, which gives module, can provide K brightness Setting signal to single chip control module.
The phase shift drive module is that bidirectional thyristor exchanges phase-shift circuit.
The single chip control module sends trigger signal and controls phase shift drive module to K according to brightness Setting signal
LED regulation driver element is powered, and sends brightness control signal to K LED regulation driver element.
The LED drive module is provided with ac input end and LED drive end, wherein, ac input end is connected to LED
The live wire input and zero line input of driver element are adjusted, LED drive end is connected to LED.
The LED drive module is additionally provided with PWM brightness regulated signal inputs.
The single-chip microcomputer adjustment module includes regulation single-chip microcomputer, positive half-wave rectification shaping circuit, negative halfwave rectifier shaping
Circuit and regulator rectifier circuit, provided with ac input end, PWM brightness regulated signal output ends；The ac input end is connected to
LED adjusts the live wire input and zero line input of driver element, and PWM brightness regulated signal output ends are connected to LED drivings
The PWM brightness regulated signal inputs of module；The positive half-wave rectification shaping circuit and negative halfwave rectifier shaping circuit are right respectively
The alternating voltage of live wire input input carries out positive half-wave rectification shaping and negative halfwave rectifier shaping；The positive half-wave rectification shaping
The output for exporting, bearing halfwave rectifier shaping circuit of circuit is respectively connecting to adjust the different pulse capture input of single-chip microcomputer.
The guiding waveform for judging whether to have brightness control signal on single live wire, method is the negative halfwave rectifier shaping of judgement
The waveform of circuit output has negative half-wave pulse to lack, and the positive half-wave waveform of ensuing positive half-wave rectification shaping circuit output is complete
It is whole.
The beneficial effects of the invention are as follows control multiple LED brightness, without remote control, without control using single live wire mode
Line processed, without laying power line again, it is possible to achieve replacement upgrading and the transformation of general lighting lamp；LED brightness regulation is total to
Divide 9 grades, adjusted using knob assembly, meet operating habit；Brightness control signal on single live wire is only when changing brightness
Sent in short-term, when not sending brightness control signal, the voltage waveform of single fire wire output end output is continuous whole single-phase
Sine wave, without harmonic wave；Turned off the light function with single-fire-wire electronic switch.
Brief description of the drawings
Fig. 1 is system embodiment structured flowchart.
Fig. 2 is wall control switch element example structure figure.
Fig. 3 is wall control switch element embodiment circuit diagram.
Fig. 4 is the corresponding α angles schematic diagram of ternary.
Fig. 5 is the waveform example Fig. 1 for sending a brightness control signal.
Fig. 6 is the waveform example Fig. 2 for sending a brightness control signal.
Fig. 7 is brightness control signal sending control method.
Fig. 8 is LED regulation structure of driving unit figure.
Fig. 9 is single-chip microcomputer adjustment module embodiment circuit diagram.
Figure 10 is LED drive module embodiment circuit diagram.
Figure 11 is brilliance control adjusting method.
Embodiment
Below by accompanying drawing and the present invention is described in further detail in conjunction with the embodiments, but embodiments of the present invention
Not limited to this.
Realize that the device of the inventive method is made up of wall control switch element and multiple LEDs regulation driver element.Wall control is opened
Close unit list live wire AC to enter, single live wire AC1 goes out.After multiple LED regulation driver elements are in parallel, live wire AC1 enters, and zero line N goes out.Have
The embodiment of the device of 4 LED regulation driver elements is as shown in figure 1,4 LED regulation driver elements are respectively 1-4#
LED adjusts driver element, and the brightness of 4 LEDs is controlled to adjust respectively；If necessary to increase LED regulation driver element, increase
Plus LED regulation driver element and 1-4#LED lamps to adjust driver element in parallel.
Wall control switch element example structure is as shown in Fig. 2 by single fire-wire power module, single chip control module, phase shift
Drive module, zero passage detection module, brightness give module composition.Single fire-wire power module has single live wire OFF state current-taking function,
Also there is ON state current-taking function, for providing working power to wall control switch element.
The AC power zero cross signal of zero passage detection module detection is fed to single chip control module, and brightness gives module and carried
For all LEDs brightness Setting signal to single chip control module.Single chip control module is according to brightness Setting signal, control
Phase shift drive module is powered to all LEDs regulation driver element, and sends brilliance control to all LEDs regulation driver element
Signal.
The embodiment circuit of the wall control switch element of 4 LED regulation driver elements of control is as shown in Figure 3.
Single fire-wire power module is by single live wire voltage-stablizer U1 and its peripheral cell diode D1, electric capacity C1, electric capacity C2, inductance
L1, inductance L2, and low-dropout regulator U2 and its peripheral cell electric capacity C3, electric capacity C4 composition.Single live wire voltage-stablizer U1 type
Number be MP-6V-02S, low-dropout regulator U2 model HT7233.
Single live wire input AC is the simulation of wall control switch element, and the alternating voltage for being connected to single live wire voltage-stablizer U1 is public
COM is held altogether；The filter capacitor input FIL and alternating voltage that electric capacity C1 two ends are respectively connecting to single live wire voltage-stablizer U1 are public
Hold COM；Single live wire voltage-stablizer U1 VD GND ends be wall control switch element digitally, inductance L2 two ends
Be respectively connecting to wall control switch element digitally with simulation ground；Diode D1, inductance L1 and electric capacity C2 composition halfwave rectifier filters
Wave circuit, the input of halfwave rectifier filter circuit is connected to single fire wire output end AC1, output and is connected to single live wire voltage-stablizer U1's
High direct voltage input HDC.Single live wire voltage-stablizer U1 is additionally provided with DC voltage output end VCC, alternating current pressure side AC.
Low-dropout regulator U2 input VIN is connected to single live wire voltage-stablizer U1 DC voltage output end VCC, output
Hold VOUT outputs+3.3V DC supply VDD；Single live wire voltage-stablizer U1 ground terminal GND is connected to wall control switch element
Digitally；Electric capacity C3, electric capacity C4 are respectively low-dropout regulator U2 input voltage, output voltage filter capacitor.
Phase shift drive module is that bidirectional thyristor exchanges phase-shift circuit, by bidirectional thyristor V1, controllable silicon export optocoupler U3,
Resistance R1, resistance R2, resistance R3 compositions, controllable silicon output optocoupler U3 model MOC3053.Bidirectional thyristor V1 two sun
Extremely it is respectively connecting to single fire wire output end AC1 and single live wire voltage-stablizer U1 alternating current pressure side AC；Resistance R1 is connected in parallel on two-way
IGCT V1 two anode taps；Controllable silicon output optocoupler U3 output controllable silicon is connected with resistance R2, the connection of its series arm
To bidirectional thyristor the V1 first anode and control pole；Controllable silicon output optocoupler U3 input light emitting diode is gone here and there with resistance R3
Connection, its series arm one end is connected to DC supply VDD, and other end is trigger signal input.
Zero passage detection module is halfwave rectifier bleeder circuit, by diode D2, resistance R4, resistance R5, voltage-stabiliser tube DW1 groups
Into.Resistance R4 two ends are respectively connecting to diode D2 negative electrodes and voltage-stabiliser tube DW1 negative electrodes；Diode D2 anodes are connected to single live wire
Output terminals A C1；Voltage-stabiliser tube DW1 anodes are with being connected to the simulation of wall control switch element；Resistance R5 is connected in parallel on voltage-stabiliser tube DW1 two ends.
Zero cross signal is exported from voltage-stabiliser tube DW1 negative electrodes.
The brightness of embodiment, which gives module, can provide 4 brightness Setting signals to single chip control module, control 4
The brightness of LED.The brightness of embodiment gives module and is made up of 4 BCD rotary encoders SW1-SW4, and 1-4# is controlled respectively
The brightness of LED.The BCD codings of BCD rotary encoders output are 0000-1001, wherein, BCD codings 0001-1001 is represented
Brightness 1-9, when BCD is encoded to 0000, represents brightness 1.Connected after the BCD coding output ends of 4 BCD rotary encoders are in parallel
To the coding input end of single chip control module；The common port of each BCD rotary encoders is connected to single chip control module
Coding input control end.
Brightness, which gives module, to carry out partial pressure to DC supply VDD using multiple potentiometers, and output area exists
0-3.3V brightness given voltage.The brightness given voltage for the 0-3.3V that potentiometer is exported is divided into 10 intervals, most
Coding 0000 between low-voltage area with BCD rotary encoders is corresponding, the interval coding 1001 with BCD rotary encoders of ceiling voltage
Correspondence.
Single chip control module includes control single chip computer U4, crystal oscillator XT1.Control single chip computer U4 model is
MSP430G2553.Zero cross signal is inputted from control single chip computer U4 P2.0, and trigger signal is defeated from control single chip computer U4 P1.0
Go out, coding input end is P2.4-P2.1, coding input control end includes 4 control terminal P1.4-P1.1, and 4 are controlled respectively
BCD rotary encoders SW1-SW4 BCD coding inputs.
If brightness gives module and uses potentiometer, the output voltage of 4 potentiometers is connected to the 4 of control single chip computer U4
Individual analog voltage input.
Single chip control module effectively, sequentially inputs 4 per 1 in secondary control coding input control end P1.4-P1.1
BCD rotary encoders SW1-SW4 BCD codings are simultaneously read from coding input end P2.4-P2.1.In embodiment illustrated in fig. 3, compile
Code input control end P1.4-P1.1 is that low level is effective, for example, controlling P1.1 to be low level, P1.4-P1.2 is high level,
Then from coding input end P2.4-P2.1 input be BCD rotary encoders SW1 BCD coding, what is accordingly read is 1#LED lamps
Brightness Setting signal.
If brightness gives module and uses potentiometer, the given electricity of brightness inputted respectively to each analog voltage input
Pressure carries out A/D conversions, obtains the brightness Setting signal of 4 LEDs.
Wall control switch element sends brightness control signal by the voltage waveform for controlling single fire wire output end AC1 to export,
When wall control switch element maintains not sending brightness control signal state, single chip control module persistently exports low level triggering letter
Number, bidirectional thyristor V1 constant conductions in addition to zero crossing, the voltage waveform of single fire wire output end AC1 outputs is continuous whole list
Phase sine wave.
When wall control switch element needs to send a brightness control signal, the waveform of a brightness control signal is by guiding
Waveform+address waveform+data waveform composition；The negative half-wave that guiding waveform is not turned on by one, immediately one completely turns on just
Half wave component；The complete cycle that can also be not turned on by one of guiding waveform, immediately the positive half-wave composition that completely turns on.
Address waveform is made up of the phase shift waveform of a cycle, and it is phase shifting angle γ to bear half-wave1, positive half-wave is phase shifting angle γ0；
Phase shifting angle γ1, phase shifting angle γ0Value can be respectively phase shifting angle α2、α1、α0In one, phase shifting angle α2、α1、α0Three are corresponded to respectively
System number value 2,1,0.Address waveforms stands are address codes that LED adjusts driver element, and address code is by 2 ternarys
Location data composition, can at most control 9 LED regulation driver elements.1-9#LED lamps regulation driver element is corresponded in order
2 ternary address codes be 00,01,02,10,11,12,20,21,22.
Data waveform is made up of the phase shift waveform of a cycle, and it is phase shifting angle β to bear half-wave1, positive half-wave is phase shifting angle β0；Move
Phase angle beta1, phase shifting angle β0Value can be respectively phase shifting angle α2、α1、α0In one, phase shifting angle α2、α1、α0Ternary is corresponded to respectively
Digital value 2,1,0.Each LED has 9 grades of different brightness degrees from low to high, i.e. brightness 1-9, by 2 ternary brightness numbers
According to expression；2 ternary brightness datas corresponding with brightness 1-9 are 00,01,02,10,11,12,20,21,22 successively；Phase shift
Angle beta1For a high position for 2 ternary brightness datas, phase shifting angle β0For the low level of 2 ternary brightness datas.
Phase shifting angle α2、α1、α0Meet α2<α1<α0Relation, representative value takes α2=30 °, α1=60 °, α0=90 °, such as Fig. 4 institutes
Show.Phase shifting angle α2、α1、α0Can also value α2=0 °, α1=45 °, α0=90 °, or value α2=0 °, α1=30 °, α0=
60°。
As shown in Fig. 5 waveform example Fig. 1 of a brightness control signal is sent, wherein, Fig. 5 (a) is that single live wire is defeated
The brightness control signal voltage waveform for going out to hold AC1 to export, Fig. 5 (b) is zero cross signal voltage waveform, and Fig. 5 (c) believes for brilliance control
Voltage waveform after number negative halfwave rectifier shaping, Fig. 5 (d) is voltage waveform after brightness control signal positive half-wave rectification shaping.
When single fire wire output end AC1 exports continuous whole single-phase sine wave, single fire wire output end AC1 is inputted with single live wire
The voltage difference very little between AC is held, zero passage detection module will not export zero cross signal, and zero cross signal is maintained low level state.
It is random to stop trigger signal output when single chip control module needs to send a brightness control signal.Work as stopping
When at the time of output trigger signal during AC power positive half-wave, positive half-wave bidirectional thyristor V1 has been turned on, next
Negative half-wave bidirectional thyristor V1 be not turned on, zero passage detection module in whole negative half-wave output zero cross signal, zero cross signal for pair
AC power is answered to bear the positive pulse of half-wave, as shown in the pulse 1 in Fig. 5, the width of pulse 1 is close to 10ms.Single chip control module
A trigger pulse for being no more than 10ms is sent in the falling edge of pulse 1, the ensuing positive half-waves of bidirectional thyristor V1 are controlled
Conducting；It is phase shifting angle γ simultaneously using the falling edge of pulse 1 as zero passage time zero, after 10ms1Zero crossing, be after 20ms
Phase shifting angle γ0Zero crossing, be phase shifting angle β after 30ms1Zero crossing, be phase shifting angle β after 40ms0Zero crossing.In Fig. 5 (a),
Waveform 2-5 corresponding is phase shifting angle γ respectively1, phase shifting angle γ0, phase shifting angle β1, phase shifting angle β0；Phase shifting angle γ1Value be α0, move
Phase angle γ0Value be α1, the address code of representative is 01, and corresponding LED regulation driver element is 2#；Phase shifting angle β1Value be α1,
Phase shifting angle β0Value be α2, the corresponding 2 ternary brightness datas of brightness control signal are 12；Transmitted brightness control signal
It is meant that：The brightness degree for controlling 2#LED lamps is brightness 6.
When single chip control module needs to send a brightness control signal, it is random at the time of stop trigger signal output
When during the negative half-wave of AC power, the negative half-wave bidirectional thyristor V1 has been turned on, ensuing positive half-wave bidirectional thyristor V1
It is not turned on, but because zero passage detection module uses halfwave rectifier, positive half-wave bidirectional thyristor V1 is not turned on, will not also made
Zero detection module exports zero cross signal；Until negative half-wave bidirectional thyristor V1 next is not turned on, zero passage detection module exists
Entirely negative half-wave exports zero cross signal, and zero cross signal is positive pulse.Waveform example Fig. 2 of a brightness control signal is sent as schemed
Shown in 6, Fig. 6 (a) is the brightness control signal voltage waveform of single fire wire output end AC1 outputs, and Fig. 6 (b) is zero cross signal voltage
Waveform, Fig. 6 (c) is that brightness control signal bears voltage waveform after halfwave rectifier shaping, and Fig. 6 (d) is brightness control signal positive half-wave
Voltage waveform after rectification shaping.Pulse 11 in Fig. 6 is zero cross signal positive pulse, and its width is close to 10ms.Single-chip microcomputer controls mould
Block sends a trigger pulse for being no more than 10ms, control bidirectional thyristor V1 ensuing just half in the falling edge of pulse 11
Waveguide is led to；It is phase shifting angle γ simultaneously using the falling edge of pulse 11 as zero passage time zero, after 10ms1Zero crossing, 20ms
It is phase shifting angle γ afterwards0Zero crossing, be phase shifting angle β after 30ms1Zero crossing, be phase shifting angle β after 40ms0Zero crossing.Fig. 6 (a)
In, waveform 12-15 corresponding is phase shifting angle γ respectively1, phase shifting angle γ0, phase shifting angle β1, phase shifting angle β0；Phase shifting angle γ1Value be
α0, phase shifting angle γ0Value be α1, the address code of representative is 01, and corresponding LED regulation driver element is 2#；Phase shifting angle β1Value
For α0, phase shifting angle β0Value be α2, the corresponding 2 ternary brightness datas of brightness control signal are 02；Transmitted brilliance control
Signal is meant that：The brightness degree for controlling 2#LED lamps is brightness 3.
When the BCD of all BCD rotary encoders outputs is encoded to 0000, single chip control module stops output triggering letter
Number, bidirectional thyristor V1 shut-offs close all LEDs, single fire wire output end AC1 flows only through micro-current.
Fig. 7 is brightness control signal sending control method, is realized by the program in single chip control module, its method
It is：
Step A, judges whether to close LED, is to close LED, into LED state is closed, go to step D；Otherwise it is
Non- closing LED state, goes to step B；
Step B, determines the address code and brightness degree of brightness control signal；
Step C, sends a brightness control signal；
Step D, judges whether brightness Setting signal changes, and brightness Setting signal changes, return to step A；Brightness is given
Determine signal not change, return to step C.
When wall control switch element does not send brightness control signal, the voltage waveform of single fire wire output end AC1 outputs is company
Continue complete single-phase sine wave.
When determining brightness control signal, first determine whether be the corresponding LED of which address code brightness Setting signal occur
Change, address code is determined, it is then determined that its brightness degree.If the brightness Setting signal of the corresponding LED of multiple address codes
Change, then first handle one of them, send a brightness control signal；There is untreated complete can be returned again in step D
Step A is returned, handles successively and sends brightness control signal.
When judging whether brightness Setting signal changes, as long as there is more than 1, the given letter of the brightness comprising 1 LED
Number change, then it is assumed that brightness Setting signal changes.
The structure of all LED regulation driver elements is all identical, as shown in figure 8, being driven by single-chip microcomputer adjustment module, LED
It is defeated that the ac input end of module composition, single-chip microcomputer adjustment module and LED drive module is connected to live wire input AC1, zero line
Enter to hold N.
LED drive module is used to drive LED to light, all LED driving moulds provided with PWM brightness regulated signal inputs
Block is suitable for the present invention.
Single-chip microcomputer adjustment module is provided with PWM brightness regulated signals output end and is connected to the PWM brightness tune of LED drive module
Save signal input part.
The embodiment circuit of single-chip microcomputer adjustment module is as shown in Figure 9.
In embodiment illustrated in fig. 9, single-chip microcomputer adjustment module is by regulation single-chip microcomputer U5, diode D3, diode D4, diode
D5, diode D6, diode D7, diode D8, voltage-stabiliser tube DW2, voltage-stabiliser tube DW3, voltage-stabiliser tube DW4, resistance R6, resistance R7, electricity
Hinder R8, electric capacity C5, crystal oscillator XT2, BCD toggle switch SW compositions.
Diode D3, diode D4 negative electrodes, diode D5, diode D6, electric capacity C5, resistance R6, voltage-stabiliser tube DW2 compositions are whole
Mu balanced circuit is flowed, power supply is provided to regulation single-chip microcomputer U5.
Negative half obtained on diode D8, resistance R8, the negative halfwave rectifier shaping circuit of voltage-stabiliser tube DW4 compositions, voltage-stabiliser tube DW4
Shown in ripple waveform such as Fig. 5 (c), Fig. 6 (c)；Diode D7, resistance R7, voltage-stabiliser tube DW3 composition positive half-wave rectification shaping circuits, surely
Shown in the positive half-wave waveform obtained on pressure pipe DW3 such as Fig. 5 (d), Fig. 6 (d).Positive half-wave rectification shaping circuit and negative halfwave rectifier are whole
Shape circuit carries out positive half-wave rectification shaping and negative halfwave rectifier shaping to the alternating voltage that live wire input AC1 is inputted respectively.Just
The output for exporting, bearing halfwave rectifier shaping circuit of halfwave rectifier shaping circuit is respectively connecting to adjust single-chip microcomputer U5 seizure ratio
Compared with input P2.0, P2.1.
Single-chip microcomputer U5 model MSP430G2553 are adjusted, its PWM output end P1.2 is that the PWM brightness regulated signals are defeated
Go out end.Adjust single-chip microcomputer U5 power supply negative input end VSS with being connected to common reference.
BCD toggle switch SW is connected in the address code setting input of single-chip microcomputer adjustment module, embodiment illustrated in fig. 9,
Address code sets P2.2-P2.5 of the input to adjust single-chip microcomputer U5.BCD toggle switch SW is used to set LED regulation driving
The address code of unit；When the BCD coding ranges of BCD toggle switch SW outputs are 0001-1001, corresponding LED is adjusted in order
The numbering for saving driver element is 1-9#, and corresponding 2 ternary address codes are 00,01,02,10,11,12,20,21,22；BCD
When the BCD of toggle switch SW outputs is encoded to 0000, LED regulation driver element will close LED, stop receiving brightness control
Signal processed.In embodiment illustrated in fig. 9, the BCD of BCD toggle switch SW outputs is encoded to 0001, represents this LED adjusting driving
Unit is set as that 1#LED lamps adjust driver element, and 2 ternary address codes of respective settings are 00.
LED drive module is used to drive LED to light, and the LED drive module provided with PWM brightness regulated signal inputs is all
Go for the present invention, be only one of embodiment circuit shown in Figure 10.
In Figure 10, LED drive module is by LED driver U6, diode D9, diode D10, diode D11, diode
D12, electric capacity C6, electric capacity C7, electric capacity C8, inductance L3, fast recovery diode D13, switching tube VD, resistance R9, resistance R10 compositions.
LED driver U6 model HV9910.
In Figure 10, diode D9, diode D10, diode D11, diode D12 composition single phase bridge type rectifier circus.It is single
2 ac input ends of phase bridge rectifier are respectively connecting to live wire input AC1, zero line input N, direct current output negative terminal
With being connected to common reference, direct current output anode is connected to electric capacity C6 positive poles, electric capacity C7 one end, LED driver U6 power supply
Input VIN, inductance L3 one end, fast recovery diode D13 negative electrodes.LED driver U6 ground input GND is connected to public
Reference ground.Electric capacity C6 negative poles, the electric capacity C7 other end are with being connected to common reference.Fast recovery diode D13 anodes and switching tube
As the negative polarity connection end LED- of high-powered LED lamp after VD drain electrode connection, inductance L3 other end is as high-power
The positive polarity connection end LED+ of LED.Switching tube VD source electrode after the client links of resistance R9 mono- with being connected to the LED driver U6
LED current test side CS；The resistance R9 other end is with being connected to common reference.Switching tube VD grid is connected to LED drivings
Device U6 drive end GATE；Resistance R10 one end is connected to LED driver U6 frequency of oscillation control end RT, other end connection
To common reference.Electric capacity C8 positive poles are connected to LED driver U6 control voltage output end VDD and linear current control end
LD, negative pole are with being connected to common reference.LED driver U6 enable control end PWM_D inputs for the PWM brightness regulated signals
End.
LED adjusts driver element and receives brightness control signal by single-chip microcomputer adjustment module and control brightness, such as Figure 11 institutes
Show, its method is,
Step one, initialize, it is original intensity to control LED；
Step 2, judges whether there is brightness control signal on single live wire；There is no brightness control signal, return to step two；There is brightness
Control signal, goes to step 3；
Step 3, receives brightness control signal, obtains 2 ternary address codes and 2 ternary brightness datas；
Step 4, determines whether target LED；It is not target LED, return to step two；It is target LED, goes to step
Five；
Step 5, changes LED brightness, return to step two.
Original intensity could be arranged to any one in 9 grades of different brightness, for example, being set to brightness 1.
Judge whether there is brightness control signal on single live wire, method is to judge whether there is brightness control signal on single live wire
Guide waveform.Under normal circumstances, the voltage waveform of live wire input AC1 inputs is continuous whole single-phase sine wave, bears half-wave
The waveform of rectification shaping circuit output is cycle 20ms, the nearly 10ms of pulse width square wave.Wall control switch element is sent once
During brightness control signal, its guiding waveform causes the missing of a negative half-wave, such as Fig. 5 (c) and the correspondence position of Fig. 5 (b) pulses 1
Negative half-wave pulse missing, such as Fig. 6 (c) and the correspondence position of Fig. 6 (b) pulses 11 negative half-wave pulse is lacked.Single-chip microcomputer adjustment module
Judging the waveform of negative halfwave rectifier shaping circuit output has negative half-wave pulse to lack, and ensuing positive half-wave rectification shaping electricity
The positive half-wave waveform of road output is complete, and corresponding positive half-wave pulse is the pulse 6 in Fig. 5, or the pulse 16 in Fig. 6, you can
Judge the guiding waveform for having brightness control signal on single live wire.
Brightness control signal is received, 2 ternary address codes and 2 ternary brightness datas are obtained, method is to survey successively
Measure address waveform, data waveform and bear the angle of flow of half-wave and the angle of flow of positive half-wave, calculating obtains negative half-wave phase shifting angle and just half
After ripple phase shifting angle, reconvert is into 2 ternary address codes and 2 ternary brightness datas.In Fig. 5 in the width of pulse 7, Fig. 6
The width of pulse 17 is that the width of pulse 18 in the width of pulse 8 in the angle of flow that address waveform bears half-wave, Fig. 5, Fig. 6 is address
The angle of flow of waveform positive half-wave；The width of pulse 19 bears the conducting of half-wave for data waveform in the width of pulse 9, Fig. 6 in Fig. 5
The width of pulse 20 is the angle of flow of data waveform positive half-wave in the width of pulse 10, Fig. 6 in angle, Fig. 5.Phase shifting angle and the angle of flow
Sum is 180 °, or is time 10ms.Negative half-wave phase shifting angle γ1And β1, positive half-wave phase shifting angle γ0And β0Selection is with moving respectively
Phase angle α2、α1、α0In immediate one, to determine correspondence trit code value 2,1,0 respectively.
Determine whether target LED, method is to judge whether the 2 ternary address codes received are adjusted with this LED
2 ternary address codes of section driver element setting are consistent；It is consistent, is target LED；It is inconsistent, it is not target LED
Lamp.
Change LED brightness, the PWM brightness regulations letter that LED driver U6 enables control end PWM_D is connected to by changing
Number dutycycle realize.
In Fig. 1, wall control switch element is that single live wire AC enters, and single live wire AC1 goes out；All LED regulation driver element fire
Line AC1 enters, and zero line N goes out.From the point of view of anti-interference, the live wire AC in Fig. 1 and zero line N positions are exchanged, it is of the present invention
Method is still effective, and antijamming capability is stronger.
The method of the invention has following features：
1. LED brightness is controlled using single live wire mode, without remote control, without control line, without laying power line again；
2. LED brightness regulation is divided into 9 grades, is adjusted using knob assembly, meets operating habit；
3. the brightness control signal on single live wire is only to be sent in short-term when changing brightness；
4. the brightness of most 9 LEDs can individually be controlled using single live wire.
Claims (10)
1. a kind of method that single live wire sends the brightness control signal of the multiple LEDs of control, it is characterised in that：
Module group is given by single fire-wire power module, single chip control module, phase shift drive module, zero passage detection module, brightness
Into wall control switch element realize；
The wall control switch element is provided with single live wire input, single fire wire output end, is exported by controlling single fire wire output end
Voltage waveform sends brightness control signal；
The brightness control signal by guiding waveform, address waveform and data sets of waveforms into.
2. the method that single live wire according to claim 1 sends the brightness control signal of the multiple LEDs of control, its feature exists
In：
Single fire-wire power module has single live wire OFF state current-taking function and ON state current-taking function, for wall control switch element
Working power is provided；
The zero passage detection module is halfwave rectifier bleeder circuit, can detect the zero cross signal of the AC power, and provide
To single chip control module；
The brightness, which gives module, can provide the brightness Setting signal of K LED to single chip control module；The K is big
In equal to 1, the integer less than or equal to 9；
The phase shift drive module is that bidirectional thyristor exchanges phase-shift circuit；
The single chip control module sends trigger signal control phase shift drive module and sends brightness control according to brightness Setting signal
Signal processed.
3. the method that single live wire according to claim 1 or 2 sends the brightness control signal of the multiple LEDs of control, it is special
Levy and be：
Method is,
Step A, judges whether to close LED, is to close LED, into LED state is closed, go to step D；Otherwise it is
Non- closing LED state, goes to step B；
Step B, determines the address code and brightness degree of brightness control signal；
Step C, sends a brightness control signal；
Step D, judges whether brightness Setting signal changes, and brightness Setting signal changes, return to step A；Brightness is given
Determine signal not change, maintenance does not send brightness control signal state, return to step D；
The maintenance does not send brightness control signal state, and when being in closing LED state, single fire wire output end flows through micro- electricity
Stream；The maintenance does not send brightness control signal state, when being in non-closing LED state, single fire wire output end output
Voltage waveform is continuous whole single-phase sine wave；
It is described to send a brightness control signal, including guiding waveform, address waveform and the data waveform that order is sent；
The negative half-wave that is not turned on by one of guiding waveform, immediately the positive half-wave composition that completely turns on；The guide wave
The complete cycle that shape can also be not turned on by one, immediately one completely turn on positive half-wave composition；
The address waveform is made up of the phase shift waveform of a cycle, and it is phase shifting angle γ to bear half-wave1, positive half-wave is phase shifting angle γ0；
The data waveform is made up of the phase shift waveform of a cycle, and it is phase shifting angle β to bear half-wave1, positive half-wave is phase shifting angle β0；
The phase shifting angle γ1, phase shifting angle γ0, phase shifting angle β1, phase shifting angle β0Value can be respectively phase shifting angle α2、α1、α0In one
It is individual, phase shifting angle α2、α1、α0Trit code value 2,1,0 is corresponded to respectively.
4. the method that single live wire according to claim 3 sends the brightness control signal of the multiple LEDs of control, its feature exists
In：The phase shifting angle β1For a high position for 2 ternary brightness datas, phase shifting angle β0For the low level of 2 ternary brightness datas；Institute
State phase shifting angle γ1For a high position for 2 ternary address codes, phase shifting angle γ0For the low level of 2 ternary address codes.
5. the method that single live wire according to claim 4 sends the brightness control signal of the multiple LEDs of control, its feature exists
In：The phase shifting angle α2、α1、α0Meet α2<α1<α0Relation.
6. the method that single live wire according to claim 5 sends the brightness control signal of the multiple LEDs of control, its feature exists
In：The phase shifting angle α2=30 °, α1=60 °, α0=90 °.
7. the method that single live wire according to claim 3 sends the brightness control signal of the multiple LEDs of control, its feature exists
In：The brightness degree of the LED represents by 2 ternary brightness datas, specifically, brightness degree is brightness 1 respectively to bright
Degree 9, brightness 1 to brightness 9 is corresponding with 2 ternary brightness datas 00,01,02,10,11,12,20,21,22 successively.
8. the method that single live wire according to claim 3 sends the brightness control signal of the multiple LEDs of control, its feature exists
In：Described to send guiding waveform, method is that single chip control module stops trigger signal output at random, waits zero passage detection mould
The zero cross signal of block output；A trigger pulse for being no more than 10ms is sent in the falling edge of zero cross signal.
9. the method that single live wire according to claim 8 sends the brightness control signal of the multiple LEDs of control, its feature exists
In：The zero cross signal is produced after single chip control module stops trigger signal output at random, is to bear half-wave with AC power
Positive pulse of the corresponding and width close to 10ms.
10. single live wire according to claim 3 sends the method for the brightness control signal of the multiple LEDs of control, its feature
It is：Into when closing LED state, single chip control module stops output trigger signal.
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| CN107479429A (en) * | 2016-06-08 | 2017-12-15 | 蒂尼电源株式会社 | Exchange the control device of illumination, motor, solenoid or heater that single line connects |
| CN110418456B (en) * | 2019-06-26 | 2023-12-05 | 江门市蓬江区天利新科技有限公司 | Processing method for amplitude modulation type signal based on power line transmission and LED module |
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| CN108633138A (en) | 2018-10-09 |
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