CN104837251B - A kind of wall controlled LED lamp list live wire light adjusting circuit - Google Patents
A kind of wall controlled LED lamp list live wire light adjusting circuit Download PDFInfo
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- CN104837251B CN104837251B CN201510229150.4A CN201510229150A CN104837251B CN 104837251 B CN104837251 B CN 104837251B CN 201510229150 A CN201510229150 A CN 201510229150A CN 104837251 B CN104837251 B CN 104837251B
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Abstract
A kind of wall controlled LED lamp list live wire light adjusting circuit, it is made up of wall control switch element, LED regulation driver element, wherein, wall control switch element includes single fire-wire power module, single chip control module, phase shift drive module, zero passage detection module, the given module of brightness, and LED regulation driver element includes single-chip microcomputer adjustment module, LED drive module.When brightness changes, wall control switch element sends brightness control signal by controlling the voltage waveform of single fire wire output end output, and LED adjusts driver element and receives brightness control signal by single-chip microcomputer adjustment module and control LED brightness.The LED 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
Technical field
The present invention relates to a kind of illuminator technology, especially a kind of wall controlled LED lamp list live wire light adjusting circuit.
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.
Using PWM（Pulsewidth modulation）Dimming mode controls LED brightness, can avoid voltage regulating mode and adjust current system band
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 pass through remote control pair
LED carries out having 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
Device quantity is more, and management trouble, cost is also higher.
Two be to use digital control technology.For example, using DALI（The 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 pair
The circuit that wall controlled LED lamp is dimmed.
To reach above-mentioned purpose, the present invention is adopted the technical scheme that：A kind of wall controlled LED lamp list live wire light adjusting circuit, by
Wall control switch element, LED regulation driver element composition, it is defeated that the wall control switch element is provided with single live wire input, single live wire
Go out end, single live wire input is connected to AC power live wire；LED regulation driver element provided with live wire input,
Zero line input, wherein, the live wire input is connected to single fire wire output end of wall control switch element, the zero line input
It is connected to AC power zero line；The AC power is single-phase 220V alternating currents.
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.
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 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 LED according to brightness Setting signal
Lamp regulation driver element is powered, and sends brightness control signal to LED regulation driver element.
The LED regulation driver element is made up of single-chip microcomputer adjustment module, LED drive module.
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.
Single fire-wire power module by single live wire voltage-stablizer MP-6V-02S and its peripheral cell diode D1, electric capacity C1,
Electric capacity C2, inductance L1, inductance L2, and low-dropout regulator HT7333 and its peripheral cell electric capacity C3, electric capacity C4 composition.
The brightness gives module and uses BCD rotary encoders.
The phase shift drive module exports optocoupler MOC3023, resistance R1, resistance R2, electricity by bidirectional thyristor V1, controllable silicon
Hinder R3 compositions.
The zero passage detection module is made up of diode D2, resistance R4, resistance R5, voltage-stabiliser tube DW1.
The single chip control module includes control single chip computer, crystal oscillator XT1；The control single chip computer model
MSP430G2553.The regulation single-chip microcomputer model MSP430G2553.
The wall control switch element sends brightness control signal by the voltage waveform for controlling single fire wire output end to export；
The LED regulation driver element receives brightness control signal by single-chip microcomputer adjustment module and controls brightness；The brilliance control
Signal is made up of guiding 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；Guide wave
The complete cycle that shape can also be not turned on by one, immediately one completely turn on positive half-wave composition.
In the data waveform, the quantity table of the continuous single-phase half-sinusoid with specific phase shifting angle of brightness degree
Show；In data waveform, brightness degree can also represent the difference in carry counting system system with the single-phase half-sinusoid of different phase shifting angles
Symbol, the single-phase half-sinusoid composition data waveform of continuous different phase shifting angles, carry counting system number corresponding with data waveform
According to expression brightness degree.
The beneficial effects of the invention are as follows, LED brightness is controlled using single live wire mode, without remote control, without control line,
Without laying power line again, it is possible to achieve the replacement upgrading of general lighting lamp；LED brightness regulation is adjusted using knob assembly
Section, meets operating habit；Brightness control signal on single live wire is only to be sent in short-term when changing brightness, is not resulted in
Flashed during LED brightness regulation；Turned off the light function with single-fire-wire electronic switch.
Brief description of the drawings
Fig. 1 is system architecture diagram.
Fig. 2 is wall control switch element structure chart.
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 figure for sending ternary values 21.
Fig. 6 is the waveform example figure for sending ternary values 10.
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.
Embodiments of the invention structure by wall control switch element and LED as shown in figure 1, adjust driver element series connection group
Into.Wall control switch element list live wire AC enters, and single live wire AC1 goes out.LED regulation driver element live wire AC1 enters, and zero line N goes out.
The structure of wall control switch element by single fire-wire power module, single chip control module, phase shift as shown in Fig. 2 driven
Module, zero passage detection module, brightness give module composition.Single fire-wire power module has single live wire OFF state current-taking function, also has
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 brightness Setting signal to single chip control module.Single chip control module is according to brightness Setting signal, control phase shift driving mould
Block is powered to LED regulation driver element, and sends brightness control signal to LED regulation driver element.
The embodiment circuit of wall control switch element 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 HT7333.
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 MOC3023.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.
It is BCD rotary encoder SW1 that brightness, which gives module, and output BCD encodes 0000-1001, wherein, BCD codings
0001-1001 represents brightness 1-9, when BCD is encoded to 0000, represents and extinguishes LED.
Brightness, which gives module, to carry out partial pressure to DC supply VDD using potentiometer, and output area is in 0-
3.3V brightness given voltage.The brightness given voltage for the 0-3.3V that potentiometer is exported is divided into 10 intervals, minimum electricity
Coding 0000 between nip with BCD rotary encoders SW1 is corresponding, the interval coding with BCD rotary encoders SW1 of ceiling voltage
1001 correspondences.
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 P1.1
Go out, the BCD codings that brightness gives module are inputted from P2.4-P2. 1.If brightness gives module and uses potentiometer, potentiometer
Output voltage be connected to control single chip computer U4 analog voltage inputs A0（P1.0）.Control single chip computer U4 is by reading P2.4-
P2. the BCD codings of 1 input, or carry out A/D conversions to the brightness given voltage that analog voltage input A0 is inputted, are obtained
Brightness Setting signal 0-9.
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 and immediately data waveform composition；The negative half-wave that is not turned on by one of guiding waveform, immediately one completely turn 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.
In data waveform, brightness degree is represented with the quantity of the continuous single-phase half-sinusoid with specific phase shifting angle；Number
According in waveform, brightness degree can also represent the distinct symbols in carry counting system system with the single-phase half-sinusoid of different phase shifting angles,
The single-phase half-sinusoid composition data waveform of continuous different phase shifting angles, carry counting system data corresponding with data waveform are represented
Brightness degree.
In embodiments of the present invention, data waveform is made up of the phase shift waveform of a cycle, and it is phase shifting angle β to bear half-wave1, just
Half-wave is phase shifting angle β0；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.
Brightness control signal has 9 grades of different brightness from low to high, is made up of 2 ternary brightness datas；9 grades from low to high
The corresponding 2 ternary brightness datas of different brightness are 00,01,10,11,02,20,12,21,22；Phase shifting angle β1Enter for 2 three
A high position for brightness data processed, 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 =45 °, α1 =90 °, α0 = 135° 。
As shown in Figure 4.
As shown in Fig. 5 the waveform example figure of ternary brightness data 21 is sent, wherein, Fig. 5（a）Exported for single live wire
Hold the brightness control signal voltage waveform of AC1 outputs, Fig. 5（b）For zero cross signal voltage waveform, Fig. 5（c）For brightness control signal
Voltage waveform, Fig. 5 after negative halfwave rectifier shaping（d）For 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 is in whole negative half-wave output zero cross signal, and zero cross signal is just
Pulse, as shown in the pulse 1 in Fig. 5, the width of pulse 1 is close to 10ms.Single chip control module is sent in the falling edge of pulse 1
One trigger pulse no more than 10ms, the ensuing positive half-wave conductings of control bidirectional thyristor V1；Simultaneously by the decline of pulse 1
It is phase shifting angle β along as zero passage time zero, after 10ms1Zero crossing, be phase shifting angle β after 20 ms0Zero crossing.In Fig. 5, bear
Half-wave phase shifting angle β1Value be α2, voltage waveform is pulse 2 after negative halfwave rectifier shaping accordingly；Positive half-wave phase shifting angle β0Value
For α1, voltage waveform is pulse 3 after corresponding positive half-wave rectification shaping；The corresponding 2 ternarys brightness number of brightness control signal
According to being 21.
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.Example is as shown in fig. 6, Fig. 6（a）For single fire wire output end AC1
The brightness control signal voltage waveform of output, Fig. 6（b）For zero cross signal voltage waveform, Fig. 6（c）For brightness control signal negative half
Voltage waveform, Fig. 6 after ripple rectification shaping（d）For voltage waveform after brightness control signal positive half-wave rectification shaping.Pulse in Fig. 6
4 be zero cross signal positive pulse, and its width is close to 10ms.Single chip control module sends one in the falling edge of pulse 4 and not surpassed
Cross 10 ms trigger pulse, the ensuing positive half-wave conductings of control bidirectional thyristor V1；Simultaneously using the trailing edge of pulse 4 as
It is phase shifting angle β after zero passage time zero, 10ms1Zero crossing, be phase shifting angle β after 20 ms0Zero crossing.In Fig. 6, bear half-wave and move
Phase angle beta1Value be α1, voltage waveform is pulse 5 after negative halfwave rectifier shaping accordingly；Positive half-wave phase shifting angle β0Value be α0, phase
Voltage waveform is pulse 6 after the positive half-wave rectification shaping answered；Corresponding 2 ternary values of brightness control signal are 10.
2 ternary brightness data corresponding brightness Setting signal 1-9, the order of brightness from low to high is followed successively by 00,01,
10、11、02、20、12、21、22.The reason for using the order is that brightness increase, the virtual value of brightness control signal voltage increases
Greatly, it is ensured that sending brightness control signal does not influence the present intensity of LED.
When brightness Setting signal is 0, single chip control module stops output trigger signal, bidirectional thyristor V1 shut-offs, LED
Lamp extinguishes, and single fire wire output end AC1 flows 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, goes to step C；Otherwise step B is gone to；
Step B, sends a brightness control signal；
Step C, judges whether brightness Setting signal changes, and brightness Setting signal changes, return to step A；It is bright
Degree Setting signal does not change, return to step C.
When wall control switch element does not send brightness control signal, when LED is in illuminating state, single fire wire output end AC1
The voltage waveform of output is continuous whole single-phase sine wave.
LED adjusts structure of driving unit as shown in figure 8, being made up of single-chip microcomputer adjustment module, LED drive module, monolithic
The ac input end of machine adjustment module and LED drive module is connected to live wire input AC1, zero line input 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 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
Ripple waveform such as Fig. 5（c）, Fig. 6（c）It is shown；Diode D7, resistance R7, voltage-stabiliser tube DW3 composition positive half-wave rectification shaping circuits, surely
The positive half-wave waveform obtained on pressure pipe DW3 such as Fig. 5（d）, Fig. 6（d）It is shown.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, compare input 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.
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 drives
Dynamic device U6 drive end GATE；Resistance R10 one end is connected to LED driver U6 frequency of oscillation control end RT, the other end and connected
With being connected 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；Have
Brightness control signal, goes to step 3；
Step 3, receives brightness control signal, obtains ternary brightness data；
Step 4, 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, nearly 10 ms 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）With Fig. 5（b）The correspondence position of pulse 1
Negative half-wave pulse missing, such as Fig. 6（c）With Fig. 6（b）The negative half-wave pulse missing of the correspondence position of pulse 7.Single-chip microcomputer adjustment module is sentenced
Break and the waveform of negative halfwave rectifier shaping circuit output and there is negative half-wave pulse to lack, and ensuing positive half-wave rectification shaping circuit
The positive half-wave waveform of output is complete, and corresponding positive half-wave pulse is the pulse 2 in Fig. 5, or the pulse 8 in Fig. 6, you can judged
Go out on single live wire to have the guiding waveform of brightness control signal.
Brightness control signal is received, ternary brightness data is obtained, method bears leading for half-wave for measurement data waveform successively
The angle of flow of current flow angle and positive half-wave, calculating obtains negative half-wave phase shifting angle β1With positive half-wave phase shifting angle β0Afterwards, reconvert is bright into ternary
Degrees of data.The width of pulse 5 bears pulse 3 in the angle of flow of half-wave, Fig. 5 for data waveform in the width of pulse 2, Fig. 6 in Fig. 5
The width of pulse 6 is the angle of flow of data waveform positive half-wave in width, Fig. 6.Phase shifting angle is 180 °, Huo Zhewei with angle of flow sum
Time 10ms.Negative half-wave phase shifting angle β1, positive half-wave phase shifting angle β0Select and phase shifting angle α respectively2、α1、α0In immediate one, come
Correspondence trit code value 2,1,0 is determined respectively.
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；LED regulation driver element live wire AC1
Enter, 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, the method for the invention is still
It is so 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 electricity again
Source line；
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. there is function of turning off the light.
Claims (10)
1. a kind of wall controlled LED lamp list live wire light adjusting circuit, is made up of, the wall wall control switch element, LED regulation driver element
Control switch element and be provided with single live wire input, single fire wire output end, single live wire input is connected to AC power live wire；Institute
State LED regulation driver element and be provided with live wire input, zero line input, wherein, the live wire input is connected to wall control and opened
Single fire wire output end of unit is closed, the zero line input is connected to AC power zero line；The AC power is single-phase 220V
Alternating current；It is characterized in that：
The wall control switch element is by single fire-wire power module, single chip control module, phase shift drive module, zero passage detection mould
Block, brightness give module composition；
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 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 control phase shift drive module and adjusted to LED according to brightness Setting signal
Section driver element is powered, and sends brightness control signal to LED regulation driver element；
The LED regulation driver element is made up of single-chip microcomputer adjustment module, LED drive module；
The LED drive module is provided with ac input end and LED drive end, wherein, ac input end is connected to LED regulation
The live wire input and zero line input of driver element, LED drive end are 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
The live wire input and zero line input of driver element are adjusted, PWM brightness regulated signal output ends are connected to LED drive module
PWM brightness regulated signal inputs；The positive half-wave rectification shaping circuit and negative halfwave rectifier shaping circuit are defeated to live wire respectively
The alternating voltage for entering end input carries out positive half-wave rectification shaping and negative halfwave rectifier shaping；The positive half-wave rectification shaping circuit
Output, the output of negative halfwave rectifier shaping circuit are respectively connecting to adjust the different pulse capture input of single-chip microcomputer；
The wall control switch element sends brightness control signal by the voltage waveform for controlling single fire wire output end to export；It is described
LED adjusts driver element and receives brightness control signal by single-chip microcomputer adjustment module and control brightness.
2. wall controlled LED lamp list live wire light adjusting circuit according to claim 1, it is characterised in that：Single fire-wire power mould
Block by single live wire voltage-stablizer MP-6V-02S and its peripheral cell diode D1, electric capacity C1, electric capacity C2, inductance L1, inductance L2, with
And low-dropout regulator HT7333 and its peripheral cell electric capacity C3, electric capacity C4 composition；
Single live wire input is the simulation of wall control switch element, is connected to single live wire voltage-stablizer MP-6V-02S exchange
Voltage common terminal；Electric capacity C1 two ends are respectively connecting to single live wire voltage-stablizer MP-6V-02S filter capacitor input and exchanged
Voltage common terminal；Single live wire voltage-stablizer MP-6V-02S VD ground terminal 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 compositions half
Ripple current rectifying and wave filtering circuit, the input of halfwave rectifier filter circuit is connected to single fire wire output end, output and is connected to single live wire voltage stabilizing
Device MP-6V-02S high direct voltage input；Single live wire voltage-stablizer MP-6V-02S is additionally provided with DC voltage output end, alternating current
Pressure side；
The input of the low-dropout regulator HT7333 is connected to single live wire voltage-stablizer MP-6V-02S direct voltage output
End, output end output DC supply；Single live wire voltage-stablizer MP-6V-02S ground terminal is connected to the numeral of wall control switch element
Ground；Electric capacity C3, electric capacity C4 are respectively low-dropout regulator HT7333 input voltage, output voltage filter capacitor.
3. wall controlled LED lamp list live wire light adjusting circuit according to claim 1, it is characterised in that：The brightness gives module
Using BCD rotary encoders.
4. wall controlled LED lamp list live wire light adjusting circuit according to claim 2, it is characterised in that：The phase shift drive module
It is made up of bidirectional thyristor V1, controllable silicon output optocoupler MOC3023, resistance R1, resistance R2, resistance R3；
Two anode taps of the bidirectional thyristor V1 are respectively connecting to single fire wire output end and single live wire voltage-stablizer MP-6V-02S
Alternating current pressure side；Resistance R1 is connected in parallel on bidirectional thyristor V1 two anode taps；Controllable silicon output optocoupler MOC3053 output
Controllable silicon is connected with resistance R2, and its series arm is connected to the bidirectional thyristor V1 first anode and control pole；Controllable silicon is exported
Optocoupler MOC3053 input light emitting diode is connected with resistance R3, and its series arm one end is connected to DC supply VDD,
Other end is trigger signal input.
5. wall controlled LED lamp list live wire light adjusting circuit according to claim 2, it is characterised in that：The zero passage detection module
It is made up of diode D2, resistance R4, resistance R5, voltage-stabiliser tube DW1；
The two ends of the resistance R4 are respectively connecting to diode D2 negative electrodes and voltage-stabiliser tube DW1 negative electrodes；Diode D2 anodes are connected to
Single fire wire output end；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
End；Zero cross signal is exported from voltage-stabiliser tube DW1 negative electrodes.
6. wall controlled LED lamp list live wire light adjusting circuit according to claim 1, it is characterised in that：The single-chip microcomputer controls mould
Block includes control single chip computer, crystal oscillator XT1；The control single chip computer model MSP430G2553.
7. wall controlled LED lamp list live wire light adjusting circuit according to claim 1, it is characterised in that：The regulation monolithic type
Number be MSP430G2553.
8. wall controlled LED lamp list live wire light adjusting circuit according to claim 1, it is characterised in that：The brightness control signal
It is made up of guiding waveform and data waveform.
9. wall controlled LED lamp list live wire light adjusting circuit according to claim 8, it is characterised in that：The guiding waveform is by one
The individual negative half-wave being not turned on, immediately one completely turn on positive half-wave composition；It is complete that guiding waveform can also be not turned on by one
Complete cycle ripple, immediately one completely turn on positive half-wave composition.
10. wall controlled LED lamp list live wire light adjusting circuit according to claim 8, it is characterised in that：In the data waveform,
Brightness degree is represented with the quantity of the continuous single-phase half-sinusoid with specific phase shifting angle；In data waveform, brightness degree
The distinct symbols in carry counting system system can be represented with the single-phase half-sinusoid of different phase shifting angles, the list of continuous different phase shifting angles
Phase half-sinusoid composition data waveform, carry counting system data corresponding with data waveform represent brightness degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510229150.4A CN104837251B (en) | 2015-05-08 | 2015-05-08 | A kind of wall controlled LED lamp list live wire light adjusting circuit |
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| CN201510229150.4A CN104837251B (en) | 2015-05-08 | 2015-05-08 | A kind of wall controlled LED lamp list live wire light adjusting circuit |
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| CN104837251A CN104837251A (en) | 2015-08-12 |
| CN104837251B true CN104837251B (en) | 2017-09-29 |
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| CN109819568B (en) * | 2019-03-29 | 2024-02-13 | 广州腾龙健康实业股份有限公司 | Multi-level corresponding multi-channel signal transmission system based on two lines |
| CN111511063A (en) * | 2020-06-19 | 2020-08-07 | 夏欣怡 | L ED illumination governing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5821704A (en) * | 1995-04-28 | 1998-10-13 | The Genlyte Group Incorporated | Single wire, multiple phase remote dimming system |
| CN101917799A (en) * | 2010-07-29 | 2010-12-15 | 广州市聚晖电子科技有限公司 | Single-fire-wire electronic switch and control method thereof |
| CN201937885U (en) * | 2010-09-17 | 2011-08-17 | 英飞特电子（杭州）有限公司 | Three-line dimmer |
| SG11201401954UA (en) * | 2011-11-03 | 2014-05-29 | Schneider Electric South East Asia Hq Pte Ltd | Dimmer arrangement |
| CN103079319B (en) * | 2013-01-24 | 2015-10-14 | 福建侨汇电子科技有限公司 | A kind of Single-wire-system radio-frequency light modulator based on microcontroller |
| CN103281849B (en) * | 2013-06-26 | 2015-01-07 | 湖南工业大学 | Light-adjusting device and method of LED illuminating lamp |
| CN104427682A (en) * | 2013-08-22 | 2015-03-18 | 安提亚科技股份有限公司 | On-line digital dimmer, LED lighting device, dimming device and dimming method |
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