CN107396503A - Method for sending LED lamp brightness control signal through single live wire - Google Patents
Method for sending LED lamp brightness control signal through single live wire Download PDFInfo
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- CN107396503A CN107396503A CN201710790580.2A CN201710790580A CN107396503A CN 107396503 A CN107396503 A CN 107396503A CN 201710790580 A CN201710790580 A CN 201710790580A CN 107396503 A CN107396503 A CN 107396503A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
A method for sending LED lamp brightness control signals through a single live wire is achieved through a brightness wall control unit which is composed of a single live wire power supply module, a rectification phase-shifting driving module, a waveform sampling and shaping module, a single-chip microcomputer control module, a trigger control module and a brightness setting module. When the brightness needs to be adjusted, the brightness wall control unit controls and changes the phase shift angle of the single-live-wire output voltage waveform to send a brightness control signal, and in the brightness control signal, the brightness grade is represented by the number of continuous single-phase sine half waves with specific phase shift angles. The brightness adjustment of the LED lamp is realized by an LED lamp single live wire dimming circuit consisting of a brightness wall control unit and a brightness adjustment driving unit, and the brightness adjustment driving unit changes according to the brightness level in the brightness control signal. When the brightness wall control unit sends out the brightness control signal, the single live wire output end continuously outputs the half-wave quantity of the same phase shift angle as the brightness grade of the brightness control signal. The method can be used for replacing and upgrading the common single-live-wire control illuminating lamp.
Description
Present patent application is divisional application, and original bill Application No. 201510229502.6, the applying date is on May 8th, 2015,
A kind of entitled LED wall controlled dimming method.
Technical field
The present invention relates to a kind of lighting lamp control technology, especially a kind of single live wire sends LED brightness control signal
Method.
Background technology
Due to the nonlinear characteristic of LED, the brightness of LED can not be realized by the way of voltage is adjusted.
During using controllable constant-current source to adjust the brightness of LED, 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 as to damage the life-span of constant-current source and LED light source.
LED brightness is controlled using PWM (pulsewidth modulation) dimming mode, voltage regulating mode can be avoided and adjust current system band
The problem of coming.Currently used LED light-dimming method has three kinds：
First, use remote control control.LED control circuit is equipped with remote control device, can be by remote control to LED
Level light modulation either stepless dimming is carried out, its shortcoming is that a LED needs to be equipped with a remote control, causes remote control quantity
More, management bothers, and cost is also higher.
Second, 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 accurately dim and switch controlling to single lamp or arbitrary lamp group.Program advanced technology, but cost is very high, system
In addition to needing to lay power line, it is also necessary to lay control line.
Third, use 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
Adjust brightness, and the requirement of switch motion having time.
The content of the invention
The purpose of the present invention is intended in the case of not changing existing illuminating line wiring, there is provided one kind is sent using single live wire
The method of LED brightness control signal.
To reach above-mentioned purpose, the inventive method is realized by brightness wall control unit.
The LED list live wire that the brightness regulation of LED is made up of brightness wall control unit and brightness regulation driver element dims
Circuit realiration.The brightness wall control unit is provided with single live wire input, single fire wire output end, and single live wire input is connected to
AC power live wire；The brightness regulation driver element is provided with live wire input, zero line input, wherein, the live wire input
End is connected to single fire wire output end of brightness wall control unit, and the zero line input is connected to AC power zero line；The exchange
Power supply is single-phase 220V alternating currents.
The brightness wall control unit sends brightness control by controlling the phase shifting angle of single fire wire output end output voltage waveforms
Signal processed, brightness control signal share brightness 1-N, altogether N number of brightness degree；N is the integer more than or equal to 2.N representative value is
8。
It is described send brightness control signal method be：
Step A, the brightness degree of brightness control signal is set as brightness 1；
Step B, send a brightness control signal；
Step C, judges whether brightness changes, and brightness changes, return to step B；Brightness does not change, and maintains not
Send brightness control signal state, return to step C.
The maintenance does not send brightness control signal state, and single fire wire output end exports positive and negative half-wave phase shifting angle all for α's
Single-phase half-sinusoid.
Described to send a brightness control signal, single continuous K half-wave output phase shifting angle of fire wire output end is all the single-phase of β
Half-sinusoid, the brightness degree of the brightness control signal sent is brightness K；K is more than or equal to the 1, integer less than or equal to N.
The phase shifting angle β is more than phase shifting angle α.Phase shifting angle α=4 °, phase shifting angle β=30 °.
The brightness regulation driver element receives brightness control signal by luminance signal receiving module and to adjust LED bright
Degree, its method are：
Step 1, the brightness degree of brightness control signal is set as brightness 1；
Step 2, adjust LED luminance；
Step 3, judge whether there is brightness control signal on single live wire；There is no brightness control signal, return to step three；There is brightness
Control signal, go to step 4；
Step 4, brightness control signal is received, determines brightness degree；
Step 5, return to step two.
Described to judge whether there is brightness control signal on single live wire, method is to judge whether live wire input has the phase shifting angle to be
β single-phase half-sinusoid；The reception brightness control signal, determines brightness degree, and method is to judge continuous phase shifting angle for β
The number of single-phase half-sinusoid, there is the single-phase half-sinusoid that continuous K phase shifting angle is β, and the brightness degree of brightness control signal is
Brightness K.
The phase shifting angle is that β single-phase half-sinusoid takes phase shift sampling pulse triggering mode；Single fire wire output end
Export positive and negative half-wave phase shifting angle and all take uninterrupted triggering mode for α single-phase half-sinusoid.
Described to take phase shift sampling pulse triggering mode, the initial time of its trigger pulse is after phase shift sampling pulse.
Described to take uninterrupted triggering mode, method is that trigger signal remains effective always.
The brightness wall control unit is by single fire-wire power module, rectification phase shift drive module, waveform sampling Shaping Module, list
Piece machine control module, trigger control module, brightness give module composition.
The single chip control module is wall control single-chip minimum system, and there is brightness Setting signal input, phase shift to take
Sample pulse input end, trigger signal output end.
The rectification phase shift drive module is that unidirectional thyristor exchanges phase switcher circuit, by unidirectional thyristor and single-phase bridge
Formula rectification circuit forms；2 ac input ends of single phase bridge type rectifier circu are respectively single live wire input, the output of single live wire
End；The rectification output plus terminal of single phase bridge type rectifier circu is full-wave rectification end, and rectification output negative terminal is publicly；Unidirectional thyristor
Anode, negative electrode be respectively connecting to full-wave rectification end, publicly.
Single fire-wire power module is DC/DC mu balanced circuits, and input is connected to full-wave rectification end, and output end output is single
Live wire controls power supply to be powered to single chip control module；The DC/DC mu balanced circuits have the control source characteristic of wide scope.
The waveform sampling Shaping Module is resistor voltage divider circuit, and input is connected to full-wave rectification end, output end output
Phase shift sampling pulse；Phase shift sampling pulse is by voltage-stabiliser tube amplitude limit and is connected to single chip control module.
The brightness gives module output brightness Setting signal and delivers to single chip control module.
The trigger signal input of the trigger control module is connected to single chip control module, and output end is connected to unidirectionally
IGCT control pole.
The brightness regulation driver element is driven by single-phase rectifier power module of voltage regulation, luminance signal receiving module, brightness
Module forms.
The single-phase rectifier power module of voltage regulation is made up of single-phase transformer, single-phase rectifier bridge circuit, filter regulator circuit；
Single-phase transformer input is connected to live wire input, zero line input；Single-phase transformer output end is connected to single-phase rectification bridge
Circuit AC input；Single-phase rectification bridge circuit rectifies output plus terminal is DC supply, negative terminal is reference ground；Filtering voltage regulation
Circuit input end is connected to DC supply；Filter regulator circuit output end output regulation dc source receives to luminance signal
Module for power supply.
The luminance signal receiving module is made up of regulation single-chip minimum system, luminance signal sampling shaping circuit.
The regulation single-chip minimum system is provided with pulse capture input and pwm pulse output end.
The luminance signal sampling shaping circuit is made up of full-wave rectifying circuit, voltage-stabiliser tube amplitude limiter circuit；Full-wave rectification electricity
Road input is connected to single-phase transformer output end；Voltage-stabiliser tube amplitude limiter circuit input be connected to full-wave rectifying circuit output end,
Output end is connected to the pulse capture input of regulation single-chip minimum system.
The LED drive module is provided with direct-flow input end, LED drive end, PWM brightness regulated signal inputs；LED drives
The direct-flow input end of dynamic model block is connected to DC supply, and PWM brightness regulated signal inputs are connected to regulation single-chip microcomputer most
The pwm pulse output end of mini system, LED drive end are connected to LED.
The invention has the advantages that LED brightness control signal is sent using single live wire mode, without remote control, nothing
Control line is needed, without laying power line again, it is possible to achieve the replacement upgrading of general lighting lamp；LED brightness can basis
Need to be divided into any grade；Brightness control signal is sent only when changing brightness using low-angle phase shift system, continuous output
The half-wave quantity of identical phase shifting angle is the brightness degree of brightness control signal, and the time is short, LED will not be caused to flash.
Brief description of the drawings
Fig. 1 is the LED list live wire light adjusting circuit structured flowchart of brightness wall control unit and brightness regulation driver element composition.
Fig. 2 is brightness wall control cellular construction figure.
Fig. 3 is brightness wall control unit embodiment circuit diagram.
Fig. 4 is waveform example when brightness wall control unit maintains not sending brightness control signal state.
Fig. 5 is waveform example when brightness wall control unit sends brightness control signal.
Fig. 6 is to send brightness control signal flow chart.
Fig. 7 is brightness control signal sending control method.
Fig. 8 is brightness regulation structure of driving unit figure.
Fig. 9 is brightness regulation drive unit embodiment.
Figure 10 is brightness control signal method of reseptance.
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.
Brightness wall control unit and brightness regulation driver element composition LED list live wire light adjusting circuit structure as shown in figure 1,
Brightness wall control unit is connected with brightness regulation driver element, and brightness wall control unit list live wire L enters, and single live wire L1 goes out；Brightness regulation
Driver element live wire L1 enters, and zero line N goes out.
The structure of brightness wall control unit by single fire-wire power module, rectification phase shift drive module, waveform as shown in Fig. 2 taken
Sample Shaping Module, single chip control module, trigger control module, brightness give module composition.
Brightness wall control unit embodiment circuit is as shown in Figure 3.
Rectification phase shift drive module is that unidirectional thyristor exchanges phase switcher circuit, by diode D01, diode D02, two
Pole pipe D03, diode D04, unidirectional thyristor V01 compositions.Diode D01, diode D02, diode D03, diode D04 groups
Into single phase bridge type rectifier circu, its 2 ac input ends are respectively single live wire input L, single fire wire output end L1.Single-phase bridge
The rectification output plus terminal of rectification circuit is full-wave rectification end A, and rectification output negative terminal is publicly.Unidirectional thyristor V01 anode,
Negative electrode is respectively connecting to full-wave rectification end A, publicly.
Single fire-wire power module is DC/DC mu balanced circuits.In Fig. 3 embodiments, single fire-wire power module is by DC/DC voltage-stablizers
U1, three terminal regulator U2, resistance R1, diode D1, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4 compositions, DC/DC voltage-stablizers U1
Model be that DY10, three terminal regulator U2 model are HT7133.Electric capacity C1, resistance R1, electric capacity C2 composition π type filter circuits；π
The input of type filter circuit is connected to diode D1 negative electrodes, output is connected to DC/DC voltage-stablizer U1 inputs；Diode D1 anodes
It is connected to full-wave rectification end A；Three terminal regulator U2 inputs are connected to DC/DC voltage-stablizer U1 output ends, output end is single live wire
Control power vd D；Electric capacity C3 is DC/DC voltage-stablizers U1 output filter capacitor, and the output that electric capacity C4 is three terminal regulator U2 is filtered
Ripple electric capacity.
HT7133 output+3.3V voltages.If DC/DC voltage-stablizers U1 output voltage meets the confession of single chip control module
Electricity requires that three terminal regulator U2 can be omitted.DC/DC voltage-stablizers U1 is also an option that other have the control source of wide scope special
The DC/DC voltage-stablizers of property.
Waveform sampling Shaping Module is resistor voltage divider circuit.In Fig. 3 embodiments, waveform sampling Shaping Module by resistance R01,
Resistance R02, voltage-stabiliser tube DW01 are formed.Resistance R01, resistance R02 series connection tie-point are output end, export phase shift sampling pulse；Electricity
The other end for hindering R01 is input, is connected to full-wave rectification end A.Voltage-stabiliser tube DW01 is connected in parallel on resistance R02 both ends, to phase shift
Sampling pulse carries out amplitude limit.
In Fig. 3 embodiments, trigger control module is by triode V1, voltage-stabiliser tube DW1, resistance R2, resistance R3, resistance R4, electricity
Hinder R5 compositions；Voltage-stabiliser tube DW1 anodes are connected to after triode V1 collector series resistances R2, voltage-stabiliser tube DW1 negative electrodes are connected to entirely
Ripple rectifier terminal A；Triode V1 emitter stages are connected to publicly through resistance R3；Triode V1 base stages are respectively connecting to resistance R4, electricity
Hinder R5 one end；Resistance R4 other end is connected to publicly；Triode V1 transmittings extremely trigger signal output end, is connected to
Unidirectional thyristor V01 control poles；Resistance R5 other end is trigger signal input.
In Fig. 3 embodiments, brightness gives module and uses pulse potential device WP.Pulse potential device WP common port COM connections
To publicly.When pulse potential device WP rotates, its pulse output end SL, pulse output end SR output phases differ 90 ° of pulse.
Single chip control module is wall control single-chip minimum system.In Fig. 3 embodiments, wall control single-chip minimum system is by wall
Single-chip microcomputer U3, crystal oscillator XT1 composition are controlled, wall control single-chip microcomputer U3 model is MSP430G2553.In Fig. 3 embodiments, wall control
Single-chip microcomputer U3 P2.0, P2.1 is brightness Setting signal input, be respectively connecting to pulse potential device WP pulse output end SL,
Pulse output end SR；P2.2 is phase shift sampling pulse input, and it is resistor voltage divider circuit to be connected to waveform sampling Shaping Module.Figure
In 3 embodiments, the phase shift sampling pulse output end of waveform sampling Shaping Module；P1.1 is trigger signal output end, is connected to tactile
Send out the trigger signal input of control module.
Brightness wall control unit sends brilliance control by controlling the phase shifting angle of single fire wire output end L1 output voltage waveforms
Signal.In brightness control signal, brightness degree is represented with the quantity of the continuous single-phase half-sinusoid with specific phase shifting angle；It is bright
Spend control signal and share brightness 1-N, altogether N number of brightness；N is integer more than or equal to 2, representative value 8.
Brightness control signal is only in rotary pulsed potentiometer WP, and ability is by brightness wall control in the case of having brightness Setting signal
Unit control is sent.When brightness wall control unit maintains not sending brightness control signal state, uninterrupted triggering mode is taken, it is touched
Signal and remain effective always, i.e., single chip control module continuously sends out continual trigger signal, and brightness wall control unit respectively closes
Key point waveform is as shown in Figure 4.
During AC power zero passage, unidirectional thyristor V01 shut-offs.After AC power zero passage, although single chip control module is held
Supervention goes out continual trigger signal, but only when full-wave rectification end A voltage is more than voltage-stabiliser tube DW1 voltage stabilizing value, triode
V1 is just turned on, and unidirectional thyristor V01 can just be triggered conducting.Therefore, single fire wire output end L1 alternating voltage waveform such as Fig. 4
(a) shown in, each half-wave triggering and conducting at a phase shifting angle α.Full-wave rectification end A voltage waveform such as Fig. 4 (b) institutes
Show.Full-wave rectification end A voltage waveform is narrow voltage pulse, and its impulse amplitude is determined by voltage-stabiliser tube DW1 voltage stabilizing value, and it is acted on
It is to provide ON state supply voltage for single fire-wire power module.It is defeated because DC/DC voltage-stablizers DY10 is in 12V DC control source
Going out voltage still can be in more than 5.8V, and voltage-stabiliser tube DW1 voltage stabilizing value is more than 12V.When voltage-stabiliser tube DW1 voltage stabilizing value takes 20V,
Phase shifting angle α=4 °.
Waveform example is as shown in Figure 5 when brightness wall control unit sends brightness control signal.What Fig. 5 was sent is the bright of brightness 3
Spend control signal.
Single chip control module sends the flow of a brightness control signal as shown in fig. 6, step is as follows：
Step 1, stop sending trigger signal；
Step 2, wait and receive phase shift sampling pulse；
Step 3, trigger signal is sent, waits phase shift sampling pulse to disappear；
Step 4, if brightness control signal has not been sent, step 1 is gone to；Otherwise the transmission of brightness control signal is terminated, into dimension
Hold and do not send brightness control signal state.
After single chip control module stops sending trigger signal, next AC power zero crossing, unidirectional thyristor V01
Shut-off.After zero passage, even if reaching at phase shifting angle α, because without trigger signal, unidirectional thyristor V01 is still off, full-wave rectification
End A voltage persistently rises.Resistance R01, resistance R02 intrinsic standoff ratio, move arrival in reasonable selection waveform sampling Shaping Module
When at phase angle beta, the phase shift sampling pulse that full-wave rectification end A voltage is risen to after making partial pressure becomes high level from low level.It is single
After piece machine control module receives the phase shift sample-pulse signal of high level, trigger signal is sent, unidirectional thyristor V01 is turned on,
Phase shift sampling pulse disappears, and is changed into low level.If brightness control signal is brightness K, the process of repetition just now K times, brightness control
Signal processed is sent completely.Phase shifting angle β representative values are 30 °, if the high-level threshold of phase shift sampling pulse is 1.5V, then resistance R01
Value is 100 times of resistance R02.Send a brightness control signal, single continuous K half-wave output phase shifting angles of fire wire output end L1
All it is β single-phase half-sinusoid, the brightness control signal sent is brightness K；K is more than or equal to the 1, integer less than or equal to N.Move
Phase angle beta is more than phase shifting angle α.
The brightness control signal sent shown in Fig. 5 is brightness 3, and Fig. 5 (a) is the friendship of single fire wire output end L1 in transmission process
Voltage waveform is flowed, Fig. 5 (b) is the voltage waveform of full-wave rectification end A in transmission process.Fig. 5 (c) is that phase shift samples in transmission process
The pulse schematic diagram of pulse, when drawing Fig. 5 (c), idealization processing has all been done in pulse 1, pulse 2, pulse 3, i.e., signal is less than height
Make low level processing during level threshold, make high level processing during higher than high-level threshold.
Brightness wall control unit send brightness control signal method as shown in fig. 7, comprises：
Step A, the brightness degree of brightness control signal is set as brightness 1；
Step B, send a brightness control signal；
Step C, judges whether brightness changes, and brightness changes, return to step B；Brightness does not change, and maintains not
Send brightness control signal state, return to step C.
The structure of brightness regulation driver element by single-phase rectifier power module of voltage regulation, luminance signal as shown in figure 8, receive mould
Block, brightness drive module composition.
Single-phase rectifier power module of voltage regulation is made up of single-phase transformer, single-phase rectifier bridge circuit, filter regulator circuit；It is single-phase
Transformer inputs are connected to live wire input L1, zero line input N；Single-phase transformer output end is connected to single-phase rectification bridge electricity
Road ac input end；Single-phase rectification bridge circuit rectifies output plus terminal is DC supply, negative terminal is reference ground；Filtering voltage regulation electricity
Road input is connected to DC supply；Filter regulator circuit output regulation dc source, is supplied to luminance signal receiving module
Electricity.
Luminance signal receiving module is made up of regulation single-chip minimum system, luminance signal sampling shaping circuit, and regulation is single
Piece machine minimum system is provided with pulse capture input and pwm pulse output end.
Luminance signal sampling shaping circuit is made up of full-wave rectifying circuit, voltage-stabiliser tube amplitude limiter circuit；Full-wave rectifying circuit is defeated
Enter end and be connected to single-phase transformer output end.Voltage-stabiliser tube amplitude limiter circuit input is connected to full-wave rectifying circuit output end, output
End is connected to the pulse capture input of single-chip minimum system.
LED drive module is provided with direct-flow input end, LED drive end, PWM brightness regulated signal inputs.LED drives mould
The direct-flow input end of block is connected to DC supply, and PWM brightness regulated signal inputs are connected to the PWM arteries and veins of regulation single-chip microcomputer
Output end is rushed, LED drive end is connected to LED.
Brightness regulation drive unit embodiment is as shown in Figure 9.
In embodiment illustrated in fig. 9, single-phase rectifier power module of voltage regulation is by single-phase transformer TC, diode D05, diode
D06, diode D07, diode D08, electric capacity C5, resistance R03, voltage-stabiliser tube DW02 compositions.Wherein, diode D05, diode
D06, diode D07, diode D08 composition single-phase rectifier bridge circuits, electric capacity C5, resistance R03, voltage-stabiliser tube DW02 composition filtering are steady
Volt circuit.Electric capacity C5 obtains DC supply VIN to single-phase rectification bridge output filtering, and regulation direct current is exported on voltage-stabiliser tube DW02
Power supply VCC.
In embodiment illustrated in fig. 9, luminance signal receiving module is by regulation single-chip microcomputer U4, crystal oscillator XT2, diode
D09, diode D10, resistance R6, resistance R7, voltage-stabiliser tube DW2 compositions.Wherein, single-chip microcomputer U4, crystal oscillator XT2 composition are adjusted
Single-chip minimum system, regulation single-chip microcomputer U4 P2.0 is pulse capture input, and P1.2 is pwm pulse output end.Diode
D09, diode D10 form full-wave rectifying circuit, and diode D09, that diode D10 anode is respectively connecting to single-phase transformer is defeated
Go out and hold L2, N2, it is full-wave rectifying circuit output end that negative electrode, which is coupled,.Resistance R6, resistance R7, voltage-stabiliser tube DW2 composition voltage-stabiliser tube amplitude limits
Circuit.Resistance R6 one end is coupled for voltage-stabiliser tube amplitude limiter circuit output end with voltage-stabiliser tube DW2 negative electrodes and is connected to regulation single-chip microcomputer
U4 pulse capture input.Resistance R6 other end is voltage-stabiliser tube amplitude limiter circuit input and is connected to full-wave rectifying circuit
Output end.Voltage-stabiliser tube DW2 anodes are connected to reference ground, and resistance R7 is connected in parallel on voltage-stabiliser tube DW2 both ends.
The model for adjusting single-chip microcomputer U4 is MSP430G2553.Wall control single-chip microcomputer U3, regulation single-chip microcomputer U4 are also an option that it
The low-power scm of his MSP430 series.
In embodiment illustrated in fig. 9, brightness drive module by LED constant-current driver U5, inductance LG, resistance R8, recover two soon
Pole pipe D2 is formed, the model PT4115 of LED constant-current driver.Resistance R8 both ends are respectively connecting to LED constant-current driver U5
Power voltage terminal VIN, output current induction end SEN；Fast recovery diode D2 negative electrodes are connected to LED constant-current driver U5 electricity
Source voltage end VIN, anode are connected to LED constant-current driver U5 output switching terminal SW；Inductance LG one end is connected to LED constant current
Driver U5 output switching terminal SW；LED constant-current driver U5 output current induction end SEN and inductance LG other ends be
LED drive end；LED constant-current driver U5 power voltage terminal VIN is the direct-flow input end of LED drive module；LED constant current is driven
Dynamic device U5 brightness adjustment control end DIM is PWM brightness regulated signal inputs.
Brightness regulation driver element receives brightness control signal and adjusting brightness of LED lamps by luminance signal receiving module, its
Method is：
Step 1, the brightness degree of brightness control signal is set as brightness 1；
Step 2, adjust LED luminance；
Step 3, judge whether there is brightness control signal on single live wire；There is no brightness control signal, return to step three；There is brightness
Control signal, go to step 4；
Step 4, receive brightness control signal；
Step 5, return to step two.
Judge whether there is brightness control signal on single live wire, method is that to judge whether live wire input L1 has phase shifting angle be β
Single-phase half-sinusoid；Brightness control signal is received, method is to judge of the continuous phase shifting angle for β single-phase half-sinusoid
Number, there is the single-phase half-sinusoid that continuous K phase shifting angle is β, brightness control signal is brightness K.Luminance signal sampling shaping circuit
Alternating voltage on live wire input L1 is converted into square wave, as shown in Fig. 5 (d).Phase shifting angle α, phase shifting angle β and Fig. 5 (d) institutes
The negative pulse shown is corresponding, wherein phase shifting angle α respective pulses 4, pulse 8, pulse 9, is the negative pulse of narrower width；β pairs of phase shifting angle
Pulse 5, pulse 6, pulse 7 are answered, is the negative pulse of wider width.Luminance signal receiving module only needs differentiation to deliver to regulation monolithic
The width of machine minimum system pulse capture input negative pulse, you can judge whether live wire input L1 has list of the phase shifting angle for β
Phase half-sinusoid；The quantity for the single-phase half-sinusoid that phase shifting angle is β is calculated, brightness control signal can be obtained.
In Fig. 5, in the positive half-wave of AC power at the time of single chip control module the 1st time stops sending trigger signal, because
This, the single-phase half-sinusoid that upper 1st phase shifting angle of live wire input L1 is β is negative half-wave.Due to single chip control module the 1st time
Stopping is random at the time of send trigger signal, so, may also be in alternating current at the time of stopping sending trigger signal for the 1st time
The negative half-wave in source, now, upper 1st phase shifting angle of live wire input L1 are that β single-phase half-sinusoid is changed into positive half-wave.Due to brightness
Sample of signal shaping circuit is reconverted into square wave, therefore, the 1st is moved to the alternating voltage elder generation rectification on live wire input L1
Phase angle is that β single-phase half-sinusoid is positive half-wave, or negative half-wave, does not influence brightness regulation driver element to brightness control signal
Judgement and reception.
Claims (8)
1. a kind of method that single live wire sends LED brightness control signal, is realized by brightness wall control unit, it is characterised in that：
The brightness wall control unit includes single fire-wire power module, rectification phase shift drive module, waveform sampling Shaping Module, monolithic
Machine control module, trigger control module, brightness give module, provided with single live wire input and single fire wire output end；Single fire
Line input is connected to AC power live wire；The brightness wall control unit is by controlling single fire wire output end output voltage waveforms
Phase shifting angle sends brightness control signal.
2. the method that single live wire according to claim 1 sends LED brightness control signal, it is characterised in that：It is described bright
Spend control signal and share brightness 1-N, altogether N number of brightness degree；N is the integer more than or equal to 2；
It is described send brightness control signal method be：
Step A, the brightness degree of brightness control signal is set as brightness 1；
Step B, send a brightness control signal；
Step C, judges whether brightness changes, and brightness changes, return to step B；Brightness does not change, and maintains not
Send brightness control signal state, return to step C；
The maintenance does not send brightness control signal state, and it is all the single-phase of α that single fire wire output end, which exports positive and negative half-wave phase shifting angle,
Half-sinusoid；
Described to send a brightness control signal, single continuous K half-wave output phase shifting angle of fire wire output end is all β single-phase sine
Half-wave, the brightness degree of the brightness control signal sent is brightness K；K is more than or equal to the 1, integer less than or equal to N；
The phase shifting angle β is more than phase shifting angle α.
3. the method that single live wire according to claim 2 sends LED brightness control signal, it is characterised in that：The shifting
Phase angle is that β single-phase half-sinusoid takes phase shift sampling pulse triggering mode；Single fire wire output end exports positive and negative half-wave and moved
Phase angle all takes uninterrupted triggering mode for α single-phase half-sinusoid.
4. the method that single live wire according to claim 3 sends LED brightness control signal, it is characterised in that：It is described to adopt
Phase shift sampling pulse triggering mode is taken, the initial time of its trigger pulse is after phase shift sampling pulse.
5. the method that single live wire according to claim 3 sends LED brightness control signal, it is characterised in that：It is described to adopt
Uninterrupted triggering mode is taken, method is that trigger signal remains effective always.
6. the method that single live wire according to claim 2 sends LED brightness control signal, it is characterised in that：The shifting
Phase angle α=4 °, phase shifting angle β=30 °.
7. the method that single live wire according to claim 2 sends LED brightness control signal, it is characterised in that：Described N etc.
In 8.
8. the method that single live wire according to claim 1 sends LED brightness control signal, it is characterised in that：The list
Piece machine control module is wall control single-chip minimum system, has brightness Setting signal input, phase shift sampling pulse input, touches
Signalling output end；
The rectification phase shift drive module is that unidirectional thyristor exchanges phase switcher circuit, whole by unidirectional thyristor and single-phase bridge
Current circuit forms；2 ac input ends of single phase bridge type rectifier circu are respectively single live wire input, single fire wire output end；It is single
The rectification output plus terminal of phase bridge rectifier is full-wave rectification end, and rectification output negative terminal is publicly；The sun of unidirectional thyristor
Pole, negative electrode are respectively connecting to full-wave rectification end, publicly；
Single fire-wire power module is DC/DC mu balanced circuits, and input is connected to full-wave rectification end, and output end exports single live wire
Power supply is controlled to be powered to single chip control module；The DC/DC mu balanced circuits have the control source characteristic of wide scope；
The waveform sampling Shaping Module is resistor voltage divider circuit, and input is connected to full-wave rectification end, output end output phase shift
Sampling pulse；Phase shift sampling pulse is by voltage-stabiliser tube amplitude limit and is connected to single chip control module；
The brightness gives module output brightness Setting signal and delivers to single chip control module；
The trigger signal input of the trigger control module is connected to single chip control module, and output end is connected to unidirectional brilliant lock
Pipe control pole.
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| CN201710790580.2A CN107396503B (en) | 2015-05-08 | 2015-05-08 | Method for sending LED lamp brightness control signal through single live wire |
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| CN201510229502.6A CN104837257A (en) | 2015-05-08 | 2015-05-08 | Wall-controlled dimming method for LED lamp |
| CN201710790580.2A CN107396503B (en) | 2015-05-08 | 2015-05-08 | Method for sending LED lamp brightness control signal through single live wire |
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| CN201811144265.3A Active CN109195257B (en) | 2015-05-08 | 2015-05-08 | Wall-controlled dimming method for LED lamp |
| CN201710790580.2A Active CN107396503B (en) | 2015-05-08 | 2015-05-08 | Method for sending LED lamp brightness control signal through single live wire |
| CN201811144135.XA Active CN109195256B (en) | 2015-05-08 | 2015-05-08 | Method for controlling phase shifting angle on single live wire |
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| Publication number | Publication date |
|---|---|
| CN107396503B (en) | 2020-06-09 |
| CN104837257A (en) | 2015-08-12 |
| CN109195257B (en) | 2020-09-04 |
| CN109195257A (en) | 2019-01-11 |
| CN109195256B (en) | 2020-09-04 |
| CN109195256A (en) | 2019-01-11 |
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