CN104968113B - Apparatus of remotely adjusting the brightness of multiple LED lamps through controllable rectification waves - Google Patents
Apparatus of remotely adjusting the brightness of multiple LED lamps through controllable rectification waves Download PDFInfo
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- CN104968113B CN104968113B CN201510387057.6A CN201510387057A CN104968113B CN 104968113 B CN104968113 B CN 104968113B CN 201510387057 A CN201510387057 A CN 201510387057A CN 104968113 B CN104968113 B CN 104968113B
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Abstract
Provided is an apparatus of remotely adjusting the brightness of multiple LED lamps through controllable rectification waves. The apparatus comprises a rectification control unit and multiple LED lamp brightness adjusting units. The rectification control unit includes a transformer, a control power supply module, a controllable rectification module, a zero-crossing detection module, a single-chip microcomputer control module, a trigger control module, and a brightness giving module. A single-phase 220V AC power supply is input, a controllable rectification voltage with the effective voltage value lower than 220V is output, and a brightness control signal formed by a guide wave, an address wave and a brightness wave is sent in the controllable rectification voltage. Each LED lamp brightness adjusting unit includes an adjusting power supply module, a waveform sampling module, a single-chip microcomputer adjusting module, an address setting module and an LED driving module. The brightness of LED lamps is controlled on the basis of the brightness control signal in the controllable rectification voltage. The apparatus does not need a remote controller, a control line needs not to be laid additionally, a single-phase power line is directly utilized to transmit the brightness control signal, and the brightness of multiple LED lamps can be separately adjusted in a remote manner.
Description
Technical field
The present invention relates to a kind of lighting technology, especially a kind of controlled rectification ripple to adjust multiple LEDs at a distance bright
The device of degree.
Background technology
Due to the nonlinear characteristic of LED, the brightness of LED can not be realized using adjusting by the way of voltage.
When the brightness of LED is adjusted using controllable constant-current source, the change of operating current can bring the chromatograph of LED inclined
Move, meanwhile, LED load current also becomes very low under low-light level, increases can the reduction of controllable constant-current source efficiency and temperature rise, is 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 current system band is adjusted
The problem come.At present conventional LED light-dimming method has three kinds：
One is to adopt remote control control.LED control circuit is equipped with remote control device, can pass through remote control pair
LED has carried out level light modulation or 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 is to adopt digital control technology.For example, using DALI (lighting interface of digital address) technology, DALI systems
Software same forceful electric power loop or the single or multiple LED lamps on different circuit can be carried out it is separately addressed, by DALI systems
Software is accurately dimmed and on-off control to single lamp or arbitrary lamp group.Program advanced technology, but cost is very high, system
In addition to needing to lay electric lines of force, in addition it is also necessary to lay control line.
Three is using single live wire switch on and off control technology.For example, using NU102 special chips, you can using common wall
Face switchs the switch motion within the time of regulation, realizes the brightness regulation of LED.But the 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 increasing control signal wire and not using remote control, utilizes
Single phase poaer supply line realizes that controlled rectification ripple adjusts at a distance the device of multiple LED brightness.
To reach above-mentioned purpose, the present invention is adopted the technical scheme that：
A kind of controlled rectification ripple adjusts at a distance the device of multiple LED brightness, by Commutation control unit and m LED
Brightness adjusting unit is constituted, and m is the integer more than or equal to 2.
The Commutation control unit be provided with phase line input terminal, zero line input terminal, the first controlled rectification lead-out terminal,
Two controlled rectification lead-out terminals；The phase line input terminal, zero line input terminal input single-phase 220V alternating current power supplys；Described first
Controlled rectification lead-out terminal, the second controlled rectification lead-out terminal output controlled rectification voltage.
The LED brightness adjusting unit is provided with the first controlled rectification input terminal, the second controlled rectification input terminal, institute
State the first controlled rectification input terminal, the second controlled rectification input terminal and be respectively connecting to the first controllable whole of Commutation control unit
Stream lead-out terminal, the second controlled rectification lead-out terminal.
The Commutation control unit is by transformator, control power module, controllable rectifier module, zero passage detection module, monolithic
Machine control module, trigger control module, the given module composition of brightness.
Two input terminals of the transformator are respectively phase line input terminal, zero line input terminal, two lead-out terminals
Respectively the first ac terminal, the second ac terminal；First ac terminal, the second ac terminal export the second alternating current
Source.
The control power module is by power supply single-phase rectification bridge is controlled and the first filter regulator circuit is constituted, and output first is straight
Stream working power；It is described control power supply single-phase rectification bridge two ac input ends be respectively connecting to the first ac terminal, second
Ac terminal；The rectification negative polarity end for controlling power supply single-phase rectification bridge is for publicly.
The controllable rectifier module is by rectifier bridge UR1, bidirectional thyristor V1, bidirectional thyristor V2, bidirectional thyristor V3, double
To IGCT V4 compositions；2 ac input ends of the rectifier bridge UR1 are respectively connecting to the first ac terminal and the second exchange end
Son, rectification output plus terminal is connected to the second plate of bidirectional thyristor V3, and rectification output negative terminal is connected to bidirectional thyristor V4's
Second plate；It is controllable whole first to be connected to after the first anode of bidirectional thyristor V1 is in parallel with the first anode of bidirectional thyristor V3
Stream lead-out terminal；The second plate of bidirectional thyristor V1 is connected to the first ac terminal；The first anode of bidirectional thyristor V2 with
The second controlled rectification lead-out terminal is connected to after the first anode parallel connection of bidirectional thyristor V4；The second plate of bidirectional thyristor V2
It is connected to the second ac terminal.
The trigger control module is provided with exchange control signal, rectification control signal；The exchange control signal
When the AC controling signal of input is effective, trigger when trigger control module control bidirectional thyristor V1 and bidirectional thyristor V2 zero passages
Conducting；When the AC controling signal of the exchange control signal input is invalid, trigger control module control bidirectional thyristor V1
End with after bidirectional thyristor V2 zero passages；When the rectification control signal of the rectification control signal input is effective, triggering control
Module controls triggering and conducting when bidirectional thyristor V3 and bidirectional thyristor V4 zero passages；The rectification of the rectification control signal input
When control signal is invalid, end after trigger control module control bidirectional thyristor V3 and bidirectional thyristor V4 zero passages.
The zero passage detection module is provided with zero passage voltage input, zero-crossing pulse outfan；The zero passage voltage input
Two terminals be respectively connecting to the first ac terminal and the second ac terminal；The zero passage arteries and veins of the zero-crossing pulse outfan output
Punching is positive pulse；The zero-crossing pulse is corresponding with the second alternating current power supply positive half-wave；The width of the zero-crossing pulse is handed over less than second
Stream power supply positive half-wave width；It is higher than the second ac terminal current potential that the second alternating current power supply positive half-wave is the first ac terminal current potential
The second alternating current power supply half-wave.
The given module of the brightness is provided with brightness Setting signal outfan output brightness Setting signal；The given letter of the brightness
Number include and the one-to-one brightness degree signal of m LED brightness adjusting unit.
The single chip control module includes brightness Setting signal input, signal acquisition input and two-way level letter
Number outfan；The brightness Setting signal input is connected to the brightness Setting signal outfan of the given module of brightness；It is described to catch
Catch the zero-crossing pulse outfan that signal input part is connected to zero passage detection module；The two-way level signal outfan is respectively handed over
Flow control outfan, rectification control output end；The exchange control output end, rectification control output end are respectively connecting to triggering control
The exchange control signal of molding block, rectification control signal.
The LED brightness adjusting unit is by regulation power supply module, waveform sampling module, single-chip microcomputer adjustment module, address
Setting module, LED drive module composition.
The regulation power supply module input controlled rectification voltage, the second DC supply of output, it is single-phase by regulation power supply
Rectifier bridge and the second filter regulator circuit are constituted；The rectification negative polarity end of the regulation power supply single-phase rectification bridge is reference ground；
The waveform sampling module is provided with sampling Waveform Input end and sampling pulse outfan；The sampling Waveform Input end
It is connected to the second controlled rectification input terminal；Second controlled rectification input terminal current potential is higher than first by the waveform sampling module
Simultaneously amplitude limit obtains sampling pulse for the waveform detection of controlled rectification input terminal current potential；The positive pulse of the sampling pulse and second can
Control rectification input terminal current potential is corresponding higher than the waveform of the first controlled rectification input terminal current potential.
The single-chip microcomputer adjustment module has seizure input, address code input and pwm pulse outfan, and single-chip microcomputer is adjusted
The seizure input of section module is connected to the sampling pulse outfan of waveform sampling module.
The address setting module is used to set the address code of place LED brightness adjusting unit, is provided with address code output
End；The address code outfan is connected to the address code input of single-chip microcomputer adjustment module.
The LED drive module is used to drive LED to light, and is provided with PWM brightness regulated signal inputs；The PWM is bright
Degree Regulate signal input is connected to the pwm pulse outfan of single-chip microcomputer adjustment module.
Commutation control unit sends brightness control signal by controlling controlled rectification voltage, and brightness control signal is by guiding
Ripple, address ripple, brightness wave component.
The LED brightness adjusting unit receives brightness control signal and adjusting brightness of LED lamps.
The invention has the beneficial effects as follows, multiple LED brightness are independently controlled at a distance using power line, without the need for remote control
Device, without the need for control line；LED brightness can as needed be divided into multiple grades；Brightness control signal is transmitted using rectified wave, no
Flicker and the reduction of power factor when can cause LED brightness regulation.
Description of the drawings
Fig. 1 is system embodiment structured flowchart.
Fig. 2 is Commutation control unit structure chart.
Fig. 3 is controllable rectifier module embodiment circuit diagram.
Fig. 4 is trigger control module embodiment circuit diagram.
Fig. 5 is embodiment circuit diagram in control section in Commutation control unit.
Fig. 6 is waveform diagram when embodiment sends brightness control signal.
Fig. 7 is brightness control signal sending method.
Fig. 8 is LED brightness adjusting unit structure chart.
Fig. 9 is that LED brightness adjusting unit adjusts section Example circuit diagram.
Figure 10 is LED drive module embodiment circuit diagram.
Figure 11 is brightness reception and control method.
Specific embodiment
Below by accompanying drawing and in conjunction with the embodiments the present invention is described in further detail, but embodiments of the present invention
Not limited to this.
Apparatus of the present invention are made up of Commutation control unit and m LED brightness adjusting unit of parallel connection, m be more than
Integer equal to 2.There is the device embodiment system architecture diagram of 4 LED brightness adjusting units as shown in figure 1, rectification control
Unit by phase line input terminal L, zero line input terminal N input single-phase 220V alternating current power supplys, by the first controlled rectification lead-out terminal
AC1, the second controlled rectification lead-out terminal AC2 export controlled rectification voltage.1-4#LED lamp brightness adjusting units can by first
Control rectification input terminal AC1, the second controlled rectification input terminal AC2 input controlled rectification voltages simultaneously control LED brightness.
The structure of Commutation control unit is as shown in Fig. 2 by transformator, control power module, controllable rectifier module, zero passage inspection
Survey module, single chip control module, trigger control module, the given module composition of brightness.
Two input terminals of transformator are respectively phase line input terminal L, zero line input terminal N, two lead-out terminals point
Wei not the first ac terminal L1, the second ac terminal N1.First ac terminal L1, the second ac terminal N1 export the second alternating current
Source.The voltage effective value of the second alternating current power supply is effective less than the voltage of the single-phase 220V alternating current power supplys of Commutation control unit input
Value.
The embodiment of controllable rectifier module as shown in figure 3, by rectifier bridge UR1, bidirectional thyristor V1, bidirectional thyristor V2,
Bidirectional thyristor V3, bidirectional thyristor V4 are constituted.2 ac input ends of rectifier bridge UR1 are respectively connecting to the first ac terminal
L1 and the second ac terminal N1, rectification output plus terminal is connected to the second plate of bidirectional thyristor V3, rectification output negative terminal connection
To the second plate of bidirectional thyristor V4；After the first anode of bidirectional thyristor V1 is in parallel with the first anode of bidirectional thyristor V3
It is connected to the first controlled rectification lead-out terminal AC1；The second plate of bidirectional thyristor V1 is connected to the first ac terminal L1；It is two-way
The second controlled rectification lead-out terminal is connected to after the first anode of IGCT V2 is in parallel with the first anode of bidirectional thyristor V4
AC2；The second plate of bidirectional thyristor V2 is connected to the second ac terminal N1.
The trigger pulse of bidirectional thyristor V1 is input into from its control pole K11 and first anode K12, and bidirectional thyristor V2's touches
Send out pulse to be input into from its control pole K21 and first anode K22, the trigger pulse of bidirectional thyristor V3 is from its control pole K31 and the
One anode K32 is input into, and the trigger pulse of bidirectional thyristor V4 is input into from its control pole K41 and first anode K42.
Rectifier bridge UR1 adopts single-phase rectification bridge stack, or constitutes single-phase rectification bridge replacement using 4 diodes.
Trigger control module is the circuit for meeting following functions：It is provided with exchange control signal, rectification control signal；Hand over
When the AC controling signal of flow control input input is effective, trigger control module controls bidirectional thyristor V1 and bidirectional thyristor
Triggering and conducting during V2 zero passages；When the AC controling signal of exchange control signal input is invalid, trigger control module control is two-way
End after IGCT V1 and bidirectional thyristor V2 zero passages；When the rectification control signal of rectification control signal input is effective, triggering
Control module controls triggering and conducting when bidirectional thyristor V3 and bidirectional thyristor V4 zero passages；The rectification of rectification control signal input
When control signal is invalid, end after trigger control module control bidirectional thyristor V3 and bidirectional thyristor V4 zero passages.
The embodiment of trigger control module is as shown in figure 4, by zero cross fired optocoupler U1-U4 and input current-limiting resistance R1-
R4, output current limiting resistance R5-R8 are constituted, and are provided with exchange control signal KJ, rectification control signal KZ.Zero cross fired optocoupler
The inside of U1-U4 includes input light emitting diode, output optical controlled bidirectional thyrister, and zero-cross triggering circuit.Zero cross fired
The model of optocoupler U1-U4 is selected in MOC3041, MOC3042, MOC3043, MOC3061, MOC3062, MOC3063.
Input current-limiting resistance R1 is connected in parallel to again the first direct current after connecting with the input light emitting diode of zero cross fired optocoupler U1
Working power VDD1 with exchange control signal KJ.Input current-limiting resistance R1 is connected on the input luminous two of zero cross fired optocoupler U1
Pole pipe anode, as shown in Figure 4；Input current-limiting resistance R1 can also be connected on the input light emitting diode of zero cross fired optocoupler U1
Negative electrode.
Input current-limiting resistance R2 is connected in parallel to again the first direct current after connecting with the input light emitting diode of zero cross fired optocoupler U2
Working power VDD1 with exchange control signal KJ.The input light emitting diode of input current-limiting resistance R3 and zero cross fired optocoupler U3
It is connected in parallel to the first DC supply VDD1 and rectification control signal KZ after series connection again.Input current-limiting resistance R4 and zero cross fired
The first DC supply VDD1 and rectification control signal KZ are connected in parallel to again after the input light emitting diode series connection of optocoupler U4.It is defeated
Entering current-limiting resistance R2-R4 can be connected on the input light-emitting diodes tube anode of corresponding zero cross fired optocoupler, as shown in Figure 4；Also may be used
To be connected on the input light-emitting diodes tube cathode of corresponding zero cross fired optocoupler.
Output current limiting resistance R5 is connected in parallel to again double after connecting with zero cross fired optocoupler U1 inside output optical controlled bidirectional thyrister
To control pole K11 and first anode K12 of IGCT V1；The output of output current limiting resistance R6 and zero cross fired optocoupler U2 inside is light-operated
It is connected in parallel to control pole K21 and first anode K22 of bidirectional thyristor V2 after bidirectional thyristor series connection again；Output current limiting resistance R7 with
It is connected in parallel to control pole K31 and the of bidirectional thyristor V3 after zero cross fired optocoupler U3 inside output optical controlled bidirectional thyrister series connection again
One anode K32；Output current limiting resistance R8 is connected in parallel to again after connecting with zero cross fired optocoupler U4 inside output optical controlled bidirectional thyrister
Control pole K41 and first anode K42 of bidirectional thyristor V4.
Control section includes control power module, zero passage detection module, single chip control module, bright in Commutation control unit
The given module of degree, embodiment circuit is as shown in Figure 5.
It is the second alternating current power supply to control power module input, is output as the first DC operation provided to Commutation control unit
Power vd D1.In Fig. 5 embodiments, control power module is by diode D01, diode D02, diode D03, diode D04, electricity
Hold C1, three terminal regulator U5 composition.Diode D01, diode D02, diode D03, diode D04 composition control power supplys are single-phase
Rectifier bridge；Electric capacity C1 is connected in parallel on the DC voltage output end of control power supply single-phase rectification bridge, strobes；Three terminal regulator U5
Input VIN is connected to the rectification positive ends of control power supply single-phase rectification bridge；First DC supply VDD1 is steady from three ends
Depressor U5 outfans VOUT is exported.The rectification negative polarity end of power supply single-phase rectification bridge is controlled for publicly.Three terminal regulator U5 is selected
Select H7233.
Control power module can also adopt other implementations.Diode D01, diode D02, diode D03, two poles
The control power supply single-phase rectification bridge of pipe D04 compositions can be replaced with single-phase rectification bridge stack, and three terminal regulator U5 can adopt voltage stabilizing
Pipe mu balanced circuit or DC/DC manostat.
Zero passage detection module is the circuit with following functions：It is provided with zero passage voltage input, zero-crossing pulse outfan；Cross
No-voltage input is connected to the first ac terminal；The zero-crossing pulse of zero-crossing pulse outfan output is positive pulse；Zero-crossing pulse
It is corresponding with the second alternating current power supply positive half-wave；The width of zero-crossing pulse is less than the second alternating current power supply positive half-wave width；Second alternating current
Source positive half-wave is second alternating current power supply half-wave of the first ac terminal current potential higher than the second ac terminal current potential.
In Fig. 5 embodiments, zero passage detection module is detection shaping circuit, by diode D1, resistance R9, stabilivolt DW1 groups
Into.The two ends of resistance R9 are respectively connecting to diode D1 negative electrodes and stabilivolt DW1 negative electrodes, and diode D1 anodes are connected to the first friendship
Stream terminal L1, stabilivolt DW1 anodes are connected to publicly.Stabilivolt DW1 negative electrodes are the zero-crossing pulse output for exporting zero-crossing pulse
End.
The brightness degree of brightness Setting signal is brightness 1-n；N is the integer more than or equal to 2.There is m LED brightness to adjust
The device of section unit, the brightness Setting signal of the given module output of its brightness is included with m LED brightness adjusting unit one by one
Corresponding brightness degree specified rate.In Fig. 5 embodiments, the given module of brightness adopts potentiometer RW1, potentiometer RW2, potentiometer
RW3, potentiometer RW4 carry out partial pressure to the first DC supply VDD1 respectively, the brightness Setting signal for obtaining for respectively with 1-
The given voltage V1 of the corresponding brightness of 4#LED lamp brightness adjusting units, the given voltage V2 of brightness, the given voltage V3 of brightness, brightness are given
Determine voltage V4.The given voltage V1 of brightness, the given voltage V2 of brightness, the given voltage V3 of brightness, the given voltage V4 of brightness all average marks
Into n voltage range, each voltage range is corresponding with the brightness degree of brightness Setting signal respectively, minimum voltage interval corresponding brightness
1, ceiling voltage interval corresponding brightness n.When being input into brightness Setting signal using potentiometer, there is m LED brightness adjusting unit
Device, the given module of its brightness is made up of m potentiometer.
The given module of brightness other devices can also be realized using rotary encoder, toggle switch, pulse potential device etc..
Single chip control module includes brightness Setting signal input, 1 road signal acquisition input, 2 tunnel level signals
Outfan.Brightness Setting signal input is connected to the brightness Setting signal outfan of the given module of brightness；1 road signal acquisition is defeated
Enter the zero-crossing pulse outfan that end is connected to zero passage detection module, be input into zero-crossing pulse；2 tunnel level signal outfans are exchange control
Outfan KJ processed, rectification control output end KZ, are respectively connecting to exchange control signal KJ, the rectification control of trigger control module
Input KZ.
In Fig. 5 embodiments, single chip control module is made up of single-chip microprocessor MCU 1, crystal oscillator XT1, single-chip microprocessor MCU 1
Model is MSP430G2553.The particular type of single chip control module brightness Setting signal input is defeated with the given module of brightness
The form of the brightness Setting signal for going out is relevant.The analog voltage input A0-A3 of single-chip microprocessor MCU 1 is the input of brightness Setting signal
End, sequentially inputs the given voltage V1 of brightness, the given voltage V2 of brightness, the given voltage V3 of brightness, the given voltage V4 of brightness.If
The quantity of LED brightness adjusting unit is increased or decreased, and the analog voltage input as brightness Setting signal input is same
Needs are increased or decreased.If sending the brightness Setting signal of switching value, digital quantity form using other devices, can be from monolithic
The I/O mouths input of machine MCU1；If the I/O mouths quantity of MSP430G2553 is not enough, other single-chip microcomputers can be selected.Single-chip microprocessor MCU 1
A/D conversions, or the input for reading I/O mouths are carried out by the given voltage of the brightness being input into analog voltage input A0-A3
Signal, obtains the brightness degree of brightness Setting signal.The P2.0 of single-chip microprocessor MCU 1 is signal acquisition input, is connected to zero passage inspection
Survey the zero-crossing pulse outfan of module.P2.1, P2.2 of single-chip microprocessor MCU 1 is level signal outfan, and wherein P2.1 is exchange control
Outfan KJ processed, P2.2 are rectification control output end KZ；Exchange control output end KJ, rectification control output end KZ are respectively connecting to
Exchange control signal KJ of trigger control module, rectification control signal KZ.
First controlled rectification lead-out terminal AC1, the second controlled rectification lead-out terminal AC2 output of Commutation control unit is controllable
Commutating voltage, Commutation control unit sends brightness control signal by controlling controlled rectification voltage, and brightness control signal is by drawing
Guided wave, address ripple, brightness wave component.The virtual value of controlled rectification voltage is identical with the voltage effective value of the second alternating current power supply.
Brightness 1-n, common n brightness degree are had in the brightness control signal.
The guide wave by z-1 power frequency period rectified wave and 1 power frequency period the wave component that exchanges, rectified wave front,
Waves AC is rear；Z is the integer more than or equal to 2.
The address ripple is the controlled rectification voltage wave of y power frequency period, and y is the integer more than or equal to 2.Between y and m
Relation is that m is less than or equal to 2y。
The brightness ripple is the controlled rectification voltage wave of x power frequency period, and x is the integer more than or equal to 2.The brightness control
The total brightness 1-n of signal processed, common n brightness degree；N is more than or equal to 2, less than or equal to 2xInteger.Brightness control signal is bright
Correspond between the brightness 1-n and the brightness 1-n of brightness Setting signal brightness degree of degree grade.
The controlled rectification voltage wave, the voltage wave for referring to wherein each power frequency period is rectified wave, or waves AC.
The brightness ripple correspondence x positions binary system brightness code of x power frequency period, the address ripple correspondence y positions two of y power frequency period are entered
Address code processed；The address ripple of y power frequency period collectively constitutes data wave, y positions binary address with the brightness ripple of x power frequency period
Code collectively constitutes numeric data code with x positions binary system brightness code.In each power frequency period of data wave, its controlled rectification voltage wave is friendship
During stream ripple, corresponding numeric data code is 0；In each power frequency period, when its controlled rectification voltage wave is rectified wave, corresponding numeric data code
It is 1.Or, in each power frequency period of data wave, when its controlled rectification voltage wave is waves AC, corresponding data are 1；Often
In individual power frequency period, when its controlled rectification voltage wave is rectified wave, corresponding numeric data code is 0.
Waveform embodiment is as shown in Figure 6 when Commutation control unit sends brightness control signal.Z etc. in embodiment illustrated in fig. 6
2, x is equal in 3, y be equal to 3；Brightness control signal has brightness 1-8, totally 8 brightness degrees；The 000-111 of brightness code is successively
Represent brightness 1-8；Commutation control unit can at most control 4 LED brightness adjusting units；The 00-11 of address code is successively
Represent control 1-4#LED lamp brightness adjusting units.
What Fig. 6 sent is to control the brightness control signal that 2#LED lamp brightness adjusting units, brightness degree are brightness 7.Fig. 6
A () is the waveform of controlled rectification voltage, T1 therein is interval for guide wave, the rectified wave and 1 power frequency week by 2 power frequency periods
The exchange wave component of phase.The interval controlled rectification voltage waves for the power frequency period of address ripple, i.e., 2 of T2.It is brightness ripple that T3 is interval, i.e.,
The controlled rectification voltage wave of 3 power frequency periods.The controlled rectification voltage of the address ripple and brightness ripple of embodiment totally 5 power frequency periods
In ripple, when the controlled rectification voltage wave of each power frequency period is waves AC, corresponding numeric data code is 0；In each power frequency period
When controlled rectification voltage wave is rectified wave, corresponding numeric data code is 1.In the address ripple of embodiment illustrated in fig. 6,2 power frequency periods
Waves AC, rectified wave are followed successively by, 2 binary address codes of correspondence are 01, represent the LED of control 2#LED lamp brightness adjusting units
Lamp brightness；In the brightness ripple of embodiment illustrated in fig. 6,3 power frequency periods are followed successively by rectified wave, rectified wave, waves AC, correspondence 3
Binary system brightness code is 110, represents the brightness degree of the brightness control signal as brightness 7.
The step of single chip control module sends a brightness control signal is as follows：
Step 1, when waiting until the rising edge for receiving zero-crossing pulse step 2 is entered；
Step 2, stops exchange output, starts rectification output；
Step 3, the zero-crossing pulse rising edge to receiving is counted, and count value enters step 4 when reaching z-1；
Step 4, stops rectification output, starts exchange output；
Step 5, when waiting until the rising edge for receiving zero-crossing pulse step 6 is entered；
Step 6, sends the controlled rectification voltage wave of 1 power frequency period；
Step 7, when waiting until the rising edge for receiving zero-crossing pulse step 8 is entered；
Step 8, has been sent from going to step 9, otherwise return to step 6 during the controlled rectification voltage wave of y+x power frequency period；
Step 9, stops rectification output, starts exchange output.
Commutation control unit when normal maintenance does not send brightness control signal state, hand over by single chip control module control
Flow control outfan KJ exports useful signal, and rectification control output end KZ exports invalid signals, zero cross fired optocoupler U1's and U2
Input LEDs ON, the input light emitting diode cut-off of zero cross fired optocoupler U3 and U4, bidirectional thyristor V1, two-way crystalline substance
Brake tube V2 is turned on, bidirectional thyristor V3, bidirectional thyristor V4 cut-off, the first controlled rectification lead-out terminal AC1, the second controlled rectification
The controlled rectification voltage of lead-out terminal AC2 outputs is alternating voltage.In the embodiment shown in fig. 4, single chip control module is defeated
The exchange control output end KJ that goes out, the signal of rectification control output end KZ are Low level effective.
The zero-crossing pulse of the output of zero passage detection module shown in Fig. 5 is corresponding with the positive half-wave of the second alternating current power supply, and zero passage arteries and veins
The width of punching is less than the second alternating current power supply positive half-wave width.The second alternating current power supply positive half-wave is that the first ac terminal current potential is high
In the second alternating current power supply half-wave of the second ac terminal current potential.
Single chip control module is detected after the zero-crossing pulse rising edge corresponding with half-wave in Fig. 61, into step 2.Institute
Stopping exchange output is stated, control exchange control output end KJ output invalid signals is referred to, from the next mistake of the second alternating current power supply
Zero point starts, bidirectional thyristor V1, bidirectional thyristor V2 cut-off；The beginning rectification output, refers to control rectification controlled output
End KZ output useful signals, from the beginning of the next zero crossing of the second alternating current power supply, bidirectional thyristor V3, bidirectional thyristor V4 lead
Logical, the controlled rectification voltage of the first controlled rectification lead-out terminal AC1, the second controlled rectification lead-out terminal AC2 output is rectified current
Pressure.
The stopping rectification output, refers to control rectification control output end KZ output invalid signals, from the second alternating current power supply
Next zero crossing start, bidirectional thyristor V3, bidirectional thyristor V4 cut-off；It is described to start exchange output, refer to that control is handed over
Flow control outfan KJ exports useful signal, bidirectional thyristor V1, two-way from the beginning of the next zero crossing of the second alternating current power supply
IGCT V2 is turned on, the controlled rectification electricity of the first controlled rectification lead-out terminal AC1, the second controlled rectification lead-out terminal AC2 output
Press as alternating voltage.
The controlled rectification voltage wave for sending 1 power frequency period, its method is to judge to need what is sent to be somebody's turn to do in data wave
The controlled rectification voltage wave of power frequency period is waves AC or rectified wave, if waves AC, then stops rectification output, starts to hand over
Stream output；If rectified wave, then stop exchange output, start rectification output.
Each single power frequency period in the controlled rectification voltage wave is waves AC, or rectified wave；Single power frequency period
Waves AC by 1 single phase alternating current power supply positive half-wave and minus half wave component of 1 single phase alternating current power supply, positive half-wave bears half-wave front
Rear；The rectified wave of single power frequency period is made up of 2 rectified half-waves, first rectified half-waves and the second alternating current power supply positive half-wave pair
Should, second rectified half-waves is corresponding with the negative half-wave of the second alternating current power supply.The time of the power frequency period is 20ms.The either simplex frequency
Cycle is 1 power frequency period.
In the controlled rectification voltage wave of the y+x power frequency period for sending, the controlled rectification voltage wave of front y power frequency period is
Address ripple, the controlled rectification voltage wave of rear x power frequency period is brightness ripple.
Commutation control unit send brightness control signal method as shown in fig. 7, comprises：
Step A, reads brightness Setting signal；
Step B, sends successively the brightness control signal of m LED brightness adjusting unit；
Step C, judges whether brightness changes, and brightness changes, and goes to step D；Brightness does not change, and returns
Return step C；
Step D, constitutes brightness control signal and sends, return to step C.
The brightness control signal of m LED brightness adjusting unit is sent successively, its objective is to be adjusted to each LED brightness
Section unit sends brightness control signal, controls respective original intensity.
Judge that the method whether brightness changes is to judge m LED brightness adjusting unit in brightness Setting signal
Whether brightness degree changes；As long as the brightness degree that brightness Setting signal has 1 LED brightness adjusting unit changes
Become, then brightness changes.
Composition brightness control signal simultaneously sends, and method is, when judging that certain LED brightness adjusting unit brightness changes
When, the brightness degree after this is changed is converted to brightness ripple, address ripple corresponding with the LED brightness adjusting unit, Yi Jijin
The verification ripple that row even-odd check is obtained, and guide wave constitutes together brightness control signal and sends.
The structure of LED brightness adjusting unit by regulation power supply module, waveform sampling module, single-chip microcomputer as shown in figure 8, adjusted
Section module, address setting module, LED drive module composition.The circuit structure of all m LED brightness adjusting units and work
Principle is just the same.
The adjustment portion of LED brightness adjusting unit point includes that regulation power supply module, waveform sampling module, single-chip microcomputer adjust mould
Block, address setting module, embodiment is as shown in Figure 9.
Regulation power supply module provides the second DC supply VDD2 for LED brightness adjusting unit.In Fig. 9 embodiments,
Regulation power supply module is by diode D05, diode D06, diode D07, diode D08, electric capacity C2, three terminal regulator U6 groups
Into.Diode D05, diode D06, diode D07, diode D08 composition regulation power supply single-phase rectification bridges；Electric capacity C2 is connected in parallel on
The DC voltage output end of regulation power supply single-phase rectification bridge, strobes；Three terminal regulator U6 input VIN are connected to regulation
The rectification positive ends of power supply single-phase rectification bridge；Second DC supply VDD2 is defeated from three terminal regulator U6 outfan VOUT
Go out.The rectification negative polarity end of regulation power supply single-phase rectification bridge is reference ground.Three terminal regulator U6 selects H7233.
Regulation power supply module can also adopt other implementations.Diode D05, diode D06, diode D07, two poles
The regulation power supply single-phase rectification bridge of pipe D08 compositions can be replaced with single-phase rectification bridge stack, and three terminal regulator U6 can adopt voltage stabilizing
Pipe mu balanced circuit or DC/DC manostat.
Waveform sampling module is the circuit with following functions：It is provided with sampling Waveform Input end and sampling pulse outfan；
Sampling Waveform Input end is connected to the second controlled rectification input terminal；Waveform sampling module is electric by the second controlled rectification input terminal
Position detects higher than the waveform of the first controlled rectification input terminal current potential and amplitude limit obtains sampling pulse；The positive pulse of sampling pulse with
Second controlled rectification input terminal current potential is corresponding higher than the waveform of the first controlled rectification input terminal current potential.
In Fig. 9 embodiments, waveform sampling module is detection shaping circuit, by diode D2, resistance R12, stabilivolt DW2 groups
Into.The two ends of resistance R12 are respectively connecting to diode D2 negative electrodes and stabilivolt DW2 negative electrodes；Diode D2 anodes are sampling waveform
Input, is connected to the second controlled rectification input terminal AC2；Stabilivolt DW2 anodes are connected to reference ground；Stabilivolt DW2 negative electrodes
For sampling pulse outfan.
Single-chip microcomputer adjustment module has seizure input, address code input and pwm pulse outfan, catches input and connects
It is connected to the sampling pulse outfan of waveform sampling module.In Fig. 9 embodiments, single-chip microcomputer adjustment module is by single-chip microprocessor MCU 2, crystal
Agitator XT2 is constituted, and the model of single-chip microprocessor MCU 2 is MSP430G2553, and the seizure input of single-chip microprocessor MCU 2 is P2.0, PWM
Pulse output end is P1.2.
Address setting module is used to set the address code of place LED brightness adjusting unit, is provided with address code outfan.Ground
The address code outfan of location setting module is connected to the address code input of single-chip microcomputer adjustment module.4 LED are had in embodiment
Lamp brightness adjusting unit, the corresponding 2 binary address code divisions of 1-4#LED lamp brightness adjusting units are not 00,01,10,11.
In Fig. 9 embodiments, 2 binary address codes are set using toggle switch SW1, the common port COM connections of toggle switch SW1
To reference ground, outfan S1, S2 of toggle switch SW1 are address code outfans, be connected to single-chip microcomputer adjustment module P1.4,
The address code input of single-chip microcomputer adjustment module in the embodiment that P1.5, P1.4, P1.5 are.
LED drive module is used to drive LED to light, and is provided with the LED drive module of PWM brightness regulated signal inputs all
Go for the present invention, be only one of embodiment circuit shown in Figure 10.The PWM brightness regulation letter of LED drive module
Number input is connected to the pwm pulse outfan of single-chip microcomputer adjustment module.
In embodiment illustrated in fig. 10, LED drive module by LED constant-current driver U7, diode D11, diode D12, two
Pole pipe D13, diode D14, electric capacity C3, inductance LG, resistance R14, fast recovery diode D15 compositions, LED constant-current driver U7
Model PT4115.
In Figure 10 embodiments, diode D11, diode D12, diode D13, diode D14 composition single-phase bridge rectifications
Circuit.2 ac input ends of single phase bridge type rectifier circu are respectively connecting to the first controlled rectification input terminal AC1 and second can
Control rectification input terminal AC2, direct current output negative terminal is connected to reference ground, and direct current output anode is connected to electric capacity C3 positive poles, LED and drives
The power input VIN of dynamic device U7；The two ends of resistance R14 be respectively connecting to LED constant-current driver U7 power voltage terminal VIN,
Output current induction end SEN；Fast recovery diode D15 negative electrodes are connected to power voltage terminal VIN, the sun of LED constant-current driver U7
Pole is connected to the output switching terminal SW of LED constant-current driver U7；One end of inductance LG is connected to the switch of LED constant-current driver U7
Outfan SW；Output current induction end SEN and inductance LG other ends of LED constant-current driver U7 is LED drive end, is connected
To LED；The ground input GND of LED constant-current driver U7 is connected to reference ground.The brightness adjustment control end of LED constant-current driver U7
DIM is PWM brightness regulated signal inputs.
LED brightness adjusting unit receives brightness control signal and adjusting brightness of LED lamps, and its method as shown in figure 11, is wrapped
Include：
Step one, initialization sets the original intensity grade of LED；
Step 2, adjusts LED luminance；
Step 3, determines whether brightness control signal；Without brightness control signal, return to step three；There is brilliance control
Signal, goes to step 4；
Step 4, receives brightness control signal；
Step 5, judges whether the address code for receiving meets with place LED brightness adjusting unit setting address code-phase,
It is consistent, return to step two；It is inconsistent, return to step three.
Adjusting the method for LED luminance is, brightness degree meter of the single-chip microcomputer adjustment module according to the LED for setting or receiving
PWM value is calculated, corresponding pwm pulse is sent.
The original intensity grade of LED can be set as one in n brightness degree, for example, setting original intensity etc.
Level is grade 2.When brightness degree is grade 1, the brightness of LED is minimum；The special case of LED minimum brightness is to extinguish LED.
Determine whether brightness control signal, method is to judge from the first controlled rectification input terminal AC1, second controllable whole
Whether the controlled rectification voltage of stream input terminal AC2 inputs has guide wave.
Brightness control signal is received, method is the controlled rectification voltage wave for receiving y+x power frequency period, by front y power frequency
The controlled rectification voltage wave in cycle is converted to y positions binary address code, and the controlled rectification voltage wave of x power frequency period afterwards turns
It is changed to x positions binary system brightness code；Again x positions binary system brightness code is converted to into brightness degree.
The function of waveform sampling module is to carry out detection shaping to controlled rectification voltage.In Fig. 9 embodiments, waveform sampling mould
Waveform detection and amplitude limit of the block by the first controlled rectification input terminal AC1 current potentials less than the second controlled rectification input terminal AC2 is obtained
To sampling pulse, export to the seizure input of single-chip microcomputer adjustment module；The positive pulse of sampling pulse is defeated with the first controlled rectification
Enter terminal current potential corresponding less than the half-wave of the second controlled rectification input terminal current potential, sampling pulse positive pulse width is less than should be partly
Wave width.Shown in sampling pulse example such as Fig. 6 (b) of embodiment；When controlled rectification voltage is alternating voltage, sampling pulse is
Dutycycle less than 50% and second alternating current power supply same frequency square wave；When controlled rectification voltage is commutating voltage, arteries and veins is sampled
Rush as low level.
In embodiment illustrated in fig. 6, guide wave exchanges wave component by rectified wave and 1 power frequency period of 2 power frequency periods,
Sampling pulse before guide wave is the square wave that the cycle is power frequency period.The rectified wave of 2 power frequency periods should make sampling arteries and veins
It is the interval low level of 40ms, i.e. 2 power frequency period to occur width in punching, but actually guide wave makes occur width in sampling pulse
Spend the low level interval to be close to 50ms, i.e. 2.5 power frequency period, low level interval T5 as shown in Figure 6；0.5 for having more
The interval low level of power frequency period is produced by the positive half-wave of 1 power frequency period waves AC after immediately；1 in guide wave
The negative half-wave of the waves AC of power frequency period makes occur the high level that width is 0.5 power frequency period interval, such as Fig. 6 in sampling pulse
Shown high level interval T6.
Judge whether controlled rectification voltage has guide wave, method is to judge in sampling pulse after power frequency period square wave
More than the low level interval power frequency period number of power frequency period width；If there is the low level that power frequency period number is z-1 in sampling pulse
, then there is guide wave in interval in controlled rectification voltage；If interval for the low level of z-1 without power frequency period number in sampling pulse,
Without guide wave in controlled rectification voltage.
Judge the low level interval power frequency period after power frequency period square wave more than power frequency period width in sampling pulse
Several methods are, wide to the low level pulse measurement after power frequency period square wave in sampling pulse more than power frequency period width
Degree, if the low level pulse width more than power frequency period width that obtains of measurement is W, then the interval power frequency period number of the low level
For INT (W/20)；The function of INT functions is that fractions omitted part rounds.
In the brightness ripple of the address ripple of y power frequency period or x power frequency period, 1 power frequency period 1 binary system of correspondence
Address code or brightness code.When the voltage wave of 1 power frequency period is rectified wave, corresponding sampling pulse is 1 power frequency
Cycle interval low level；When the voltage wave of 1 power frequency period is waves AC, corresponding sampling pulse is 1 duty
Than the square wave less than 50%.In embodiment illustrated in fig. 6, address ripple is the controlled rectification voltage wave of continuous 2 power frequency periods, i.e.,
The corresponding waves AC of interval T7, the interval corresponding rectified waves of T8；2 binary address codes are 01.Brightness ripple is continuous 3 power frequencies
The controlled rectification voltage wave in cycle, i.e. the interval corresponding rectified waves of T9, the interval corresponding rectified waves of T10, the interval corresponding friendships of T11
Stream ripple；3 binary system brightness codes are 110.
The controlled rectification voltage wave of front y power frequency period in the controlled rectification voltage wave for receiving y+x power frequency period is turned
Y positions binary address code is changed to, the controlled rectification voltage wave of x power frequency period afterwards is converted to x positions binary system brightness code
Method is, in the y power frequency period interval after guide wave, when the interval sampling pulse of 1 power frequency period is low level,
The corresponding binary address code is 1, when the interval sampling pulse of 1 power frequency period is square of 1 dutycycle less than 50%
During shape ripple, the corresponding binary address code is 0；In y+1 to y+x power frequency periods interval after guide wave, when 1
When the interval sampling pulse of power frequency period is low level, the corresponding binary system brightness code is 1, when 1 power frequency period interval
Sampling pulse be 1 dutycycle less than 50% square wave when, the corresponding binary system brightness code is 0.Or, drawing
In y power frequency period interval after guided wave, when the interval sampling pulse of 1 power frequency period is low level, the corresponding position
Binary address code is 0, when the interval sampling pulse of 1 power frequency period is square wave of 1 dutycycle less than 50%, accordingly
The binary address code be 1；In y+1 to the y+x power frequency period interval after guide wave, when 1 power frequency period
When interval sampling pulse is low level, the corresponding binary system brightness code is 0, when the sampling arteries and veins that 1 power frequency period is interval
When rushing the square wave for being 1 dutycycle less than 50%, the corresponding binary system brightness code is 1.
X positions binary system brightness code is converted to brightness degree can be using the method such as calculating, table look-up.In embodiment, 3 two are entered
The scope of brightness code processed is 000-111, and the brightness degree scope of representative is brightness 1-8；When brightness code is 000, brightness degree
For brightness 1；When brightness code is 001, brightness degree is brightness 2；When brightness code is 010, brightness degree is brightness 3；By that analogy,
When brightness code is 111, brightness degree is brightness 8.
Controlled rectification voltage to the regulation power supply module of all LED brightness adjusting units, LED drive module and waveform take
Egf block is directly powered, and regulation power supply module therein, LED drive module carry out first rectification, then Jing to controlled rectification voltage
After capacitor filtering, to interlock circuit power supply is provided；When controlled rectification voltage is zero, regulation power supply module, the electricity of LED drive module
Ource electric current is also zero；Waveform sampling module is non-linear resistive load, when controlled rectification voltage is zero, waveform sampling module
Source current is zero.Therefore, when controlled rectification voltage is zero, it is zero to the source current that LED brightness adjusting unit is provided.
So, Commutation control unit is carried out stopping exchange output, starts rectification output in the zero crossing of the second alternating current power supply, or is stopped
Only rectification output, when starting to exchange the switching of output, it is bidirectional thyristor V1, bidirectional thyristor V2 and bidirectional thyristor V3, two-way
Between IGCT V4 can the successful change of current, power supply short circuit will not be caused.
The present invention has following features：
1. multiple LED brightness are independently controlled at a distance using power line, without the need for remote control, without the need for control line；
2. LED brightness can as needed be divided into multiple grades；
3. brightness control signal is transmitted using rectified wave, flicker and power factor when not resulting in LED brightness regulation
Reduction.
Claims (10)
1. a kind of controlled rectification ripple adjusts at a distance the device of multiple LED brightness, it is characterised in that：
It is made up of Commutation control unit and m LED brightness adjusting unit, m is the integer more than or equal to 2；
The Commutation control unit be provided with phase line input terminal, zero line input terminal, the first controlled rectification lead-out terminal, second can
Control rectification output end；The phase line input terminal, zero line input terminal input single-phase 220V alternating current power supplys；Described first is controllable
Rectification output end, the second controlled rectification lead-out terminal output controlled rectification voltage；
The LED brightness adjusting unit is provided with the first controlled rectification input terminal, the second controlled rectification input terminal, and described
The first controlled rectification that one controlled rectification input terminal, the second controlled rectification input terminal are respectively connecting to Commutation control unit is defeated
Go out terminal, the second controlled rectification lead-out terminal；
The Commutation control unit is by transformator, control power module, controllable rectifier module, zero passage detection module, single-chip microcomputer control
Molding block, trigger control module, the given module composition of brightness；
Two input terminals of the transformator are respectively phase line input terminal, zero line input terminal, two lead-out terminal difference
For the first ac terminal, the second ac terminal；First ac terminal, the second ac terminal export the second alternating current power supply；
The control power module exports the first direct current work by power supply single-phase rectification bridge is controlled and the first filter regulator circuit is constituted
Make power supply；Two ac input ends of the control power supply single-phase rectification bridge are respectively connecting to the first ac terminal, the second exchange
Terminal；The rectification negative polarity end for controlling power supply single-phase rectification bridge is for publicly；
The controllable rectifier module is by rectifier bridge UR1, bidirectional thyristor V1, bidirectional thyristor V2, bidirectional thyristor V3, two-way crystalline substance
Brake tube V4 is constituted；2 ac input ends of the rectifier bridge UR1 are respectively connecting to the first ac terminal and the second ac terminal,
Rectification output plus terminal is connected to the second plate of bidirectional thyristor V3, and rectification output negative terminal is connected to the second of bidirectional thyristor V4
Anode；It is defeated the first controlled rectification to be connected to after the first anode of bidirectional thyristor V1 is in parallel with the first anode of bidirectional thyristor V3
Go out terminal；The second plate of bidirectional thyristor V1 is connected to the first ac terminal；The first anode of bidirectional thyristor V2 with it is two-way
The second controlled rectification lead-out terminal is connected to after the first anode parallel connection of IGCT V4；The second plate connection of bidirectional thyristor V2
To the second ac terminal；
The trigger control module is provided with exchange control signal, rectification control signal；The exchange control signal input
AC controling signal it is effective when, trigger control module control bidirectional thyristor V1 and during bidirectional thyristor V2 zero passages triggering lead
It is logical；It is described exchange control signal input AC controling signal it is invalid when, trigger control module control bidirectional thyristor V1 and
End after bidirectional thyristor V2 zero passages；When the rectification control signal of the rectification control signal input is effective, triggering control mould
Block controls triggering and conducting when bidirectional thyristor V3 and bidirectional thyristor V4 zero passages；The rectification control of the rectification control signal input
During invalidating signal processed, end after trigger control module control bidirectional thyristor V3 and bidirectional thyristor V4 zero passages；
The zero passage detection module is provided with zero passage voltage input, zero-crossing pulse outfan；The two of the zero passage voltage input
Individual terminal is respectively connecting to the first ac terminal and the second ac terminal；The zero-crossing pulse of zero-crossing pulse outfan output is
Positive pulse；
The zero-crossing pulse is corresponding with the second alternating current power supply positive half-wave；The width of the zero-crossing pulse is less than the second alternating current power supply just
Half band-width；The second alternating current power supply positive half-wave is second friendship of the first ac terminal current potential higher than the second ac terminal current potential
Stream mains half-wave；
The given module of the brightness is provided with brightness Setting signal outfan output brightness Setting signal；The brightness Setting signal bag
Include and the one-to-one brightness degree signal of m LED brightness adjusting unit；
It is defeated that the single chip control module includes brightness Setting signal input, signal acquisition input and two-way level signal
Go out end；The brightness Setting signal input is connected to the brightness Setting signal outfan of the given module of brightness；It is described to catch letter
Number input is connected to the zero-crossing pulse outfan of zero passage detection module；The two-way level signal outfan respectively exchanges control
Outfan processed, rectification control output end；The exchange control output end, rectification control output end are respectively connecting to triggering control mould
The exchange control signal of block, rectification control signal；
The LED brightness adjusting unit is by regulation power supply module, waveform sampling module, single-chip microcomputer adjustment module, address setting
Module, LED drive module composition；
The regulation power supply module input controlled rectification voltage, the second DC supply of output, by regulation power supply single-phase rectifier
Bridge and the second filter regulator circuit are constituted；The rectification negative polarity end of the regulation power supply single-phase rectification bridge is reference ground；
The waveform sampling module is provided with sampling Waveform Input end and sampling pulse outfan；Sampling Waveform Input end connection
To the second controlled rectification input terminal；The waveform sampling module is controllable higher than first by the second controlled rectification input terminal current potential
Simultaneously amplitude limit obtains sampling pulse for the waveform detection of rectification input terminal current potential；The positive pulse of the sampling pulse is controllable with second whole
Stream input terminal current potential is corresponding higher than the waveform of the first controlled rectification input terminal current potential；
The single-chip microcomputer adjustment module has seizure input, address code input and pwm pulse outfan, and single-chip microcomputer adjusts mould
The seizure input of block is connected to the sampling pulse outfan of waveform sampling module；
The address setting module is used to set the address code of place LED brightness adjusting unit, is provided with address code outfan；Institute
State the address code input that address code outfan is connected to single-chip microcomputer adjustment module；
The LED drive module is used to drive LED to light, and is provided with PWM brightness regulated signal inputs；The PWM brightness is adjusted
Section signal input part is connected to the pwm pulse outfan of single-chip microcomputer adjustment module；
Commutation control unit sends brightness control signal by controlling controlled rectification voltage, brightness control signal by guide wave,
Address ripple, brightness wave component；
The LED brightness adjusting unit receives brightness control signal and adjusting brightness of LED lamps.
2. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The control power module is by diode D01, diode D02, diode D03, diode D04, electric capacity C1, three terminal regulator U5
Composition；Diode D01, diode D02, diode D03, diode D04 composition control power supply single-phase rectification bridges；Electric capacity C1 plays filter
Ripple is acted on, and is connected in parallel on the DC voltage output end of control power supply single-phase rectification bridge；Three terminal regulator U5 input VIN are connected to control
The rectification positive ends of power supply single-phase rectification bridge processed；First DC supply is exported from three terminal regulator U5 outfans VOUT.
3. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The regulation power supply module is by diode D05, diode D06, diode D07, diode D08, electric capacity C2, three terminal regulator U6
Composition；Diode D05, diode D06, diode D07, diode D08 composition regulation power supply single-phase rectification bridges；Electric capacity C2 is in parallel
In the DC voltage output end of regulation power supply single-phase rectification bridge, strobe；Three terminal regulator U6 input VIN are connected to tune
The rectification positive ends of economize on electricity source single-phase rectification bridge；Second DC supply is exported from three terminal regulator U6 outfans VOUT.
4. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The LED drive module is by LED constant-current driver, diode D11, diode D12, diode D13, diode D14, electric capacity
C3, inductance LG, resistance R14, fast recovery diode D15 compositions；Model PT4115 of the LED constant-current driver.
5. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The trigger control module is by zero cross fired optocoupler U1, zero cross fired optocoupler U2, zero cross fired optocoupler U3, zero cross fired optocoupler
U4, input current-limiting resistance R1, input current-limiting resistance R2, input current-limiting resistance R3, input current-limiting resistance R4, output current limiting resistance
R5, output current limiting resistance R6, output current limiting resistance R7, output current limiting resistance R8 compositions, are provided with exchange control signal, rectification control
Input processed；
The zero cross fired optocoupler U1, zero cross fired optocoupler U2, zero cross fired optocoupler U3, the inside of zero cross fired optocoupler U4 include
There are input light emitting diode and output optical controlled bidirectional thyrister；
The input current-limiting resistance R1 is connected in parallel to again the first direct current after connecting with the input light emitting diode of zero cross fired optocoupler U1
Working power with exchange control signal；After input current-limiting resistance R2 connects with the input light emitting diode of zero cross fired optocoupler U2
The first DC supply is connected in parallel to again and exchanges control signal；The input of input current-limiting resistance R3 and zero cross fired optocoupler U3
The first DC supply and rectification control signal are connected in parallel to again after light emitting diode series connection；Input current-limiting resistance R4 and zero passage
The first DC supply and rectification control signal are connected in parallel to again after the input light emitting diode series connection of triggering optocoupler U4；
The output current limiting resistance R5 is connected in parallel to again double after connecting with zero cross fired optocoupler U1 inside output optical controlled bidirectional thyrister
To the control pole and the first anode of IGCT V1；The light-operated two-way crystalline substance of output current limiting resistance R6 and zero cross fired optocoupler U2 inside output
It is connected in parallel to the control pole and the first anode of bidirectional thyristor V2 after brake tube series connection again；Output current limiting resistance R7 and zero cross fired optocoupler
It is connected in parallel to the control pole and the first anode of bidirectional thyristor V3 after U3 inside output optical controlled bidirectional thyrister series connection again；Output current limiting
Resistance R8 is connected in parallel to again the control of bidirectional thyristor V4 after connecting with zero cross fired optocoupler U4 inside output optical controlled bidirectional thyrister
Pole and the first anode.
6. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The zero passage detection module is made up of diode D1, resistance R9, stabilivolt DW1, is provided with zero passage voltage input, zero-crossing pulse defeated
Go out end；The two ends of resistance R9 are respectively connecting to diode D1 negative electrodes and stabilivolt DW1 negative electrodes；Diode D1 anodes are zero passage voltage
Input, is connected to the first ac terminal；Stabilivolt DW1 anodes are connected to publicly；Stabilivolt DW1 negative electrodes are that zero-crossing pulse is defeated
Go out end.
7. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The waveform sampling module is provided with sampling Waveform Input end and sampling pulse outfan, by diode D2, resistance R12, stabilivolt
DW2 is constituted；The two ends of resistance R12 are respectively connecting to diode D2 negative electrodes and stabilivolt DW2 negative electrodes；Diode D2 anodes are sampling
Waveform Input end, is connected to the second controlled rectification input terminal；Stabilivolt DW2 anodes are connected to reference ground；Stabilivolt DW2 negative electrodes
For sampling pulse outfan.
8. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The given module of the brightness is made up of m potentiometer.
9. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The address setting module adopts toggle switch.
10. controlled rectification ripple according to claim 1 adjusts at a distance the device of multiple LED brightness, it is characterised in that：
The single chip control module is made up of single-chip microprocessor MCU 1, crystal oscillator XT1；The single-chip microcomputer adjustment module is by single-chip microcomputer
MCU2, crystal oscillator XT2 are constituted；The single-chip microprocessor MCU 1, the model of single-chip microprocessor MCU 2 are MSP430G2553.
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| CN103079319A (en) * | 2013-01-24 | 2013-05-01 | 福建侨汇电子科技有限公司 | Single-wire-system radio-frequency light modulator based on microcontroller |
| CN103281849A (en) * | 2013-06-26 | 2013-09-04 | 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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| CN104968113A (en) | 2015-10-07 |
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Inventor after: Zeng Hongbing Inventor after: Ling Yun Inventor after: Wang Wei Inventor after: Guo Yanjie Inventor after: Wang Bing Inventor after: Nie Hui Inventor after: Peng Gao Inventor before: Ling Yun Inventor before: Guo Yanjie Inventor before: Wang Bing Inventor before: Zeng Hongbing Inventor before: Nie Hui Inventor before: Peng Gao |
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