CN204993953U - Device of a plurality of LED lamp of controllable rectification ripples remote regulating luminance - Google Patents
Device of a plurality of LED lamp of controllable rectification ripples remote regulating luminance Download PDFInfo
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- CN204993953U CN204993953U CN201520475480.7U CN201520475480U CN204993953U CN 204993953 U CN204993953 U CN 204993953U CN 201520475480 U CN201520475480 U CN 201520475480U CN 204993953 U CN204993953 U CN 204993953U
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Abstract
The utility model provides a device of a plurality of LED lamp of controllable rectification ripples remote regulating luminance comprises rectification the control unit, 4 LED lamp adjustting of the lighteness units. Rectification the control unit comprises transformer, control power module, controllable rectifier module, zero -cross detection module, single -chip computer control module, trigger control module, the preset module of luminance, inputs single -phase 220V alternating current power supply, and the output voltage virtual value is less than 220V's controllable rectified voltage, sends the power module 0 signal by guide ripples, address ripples, luminance wave component in controllable rectified voltage. LED lamp adjustting of the lighteness unit comprises regulation power module, wave form sampling module, singlechip adjusting module, address setting module, LED drive module, according to the luminance of the brilliance control signal control LED lamp among the controllable rectified voltage. The device need not the remote controller, need not to lay alone the control line, directly utilizes single phase power line transmission brilliance control signal, can remote luminance to a plurality of LED lamps adjust respectively.
Description
Technical field
The utility model relates to a kind of lighting technology, and especially a kind of controlled rectification ripple regulates the device of multiple LED brightness at a distance.
Background technology
Due to the nonlinear characteristic of LED, the brightness of LED can not adopt the mode of regulation voltage to realize.
When adopting controllable constant-current source to regulate the brightness of LED, the change of operating current can bring the chromatogram of LED to offset, simultaneously, under low-light level, LED load current also becomes very low, the reduction of controllable constant-current source efficiency and temperature rise can be made to increase, the power consumption of loss on driving chip is larger, thus can damage the life-span of constant-current source and LED light source.
Adopt PWM(pulse-width modulation) brightness of dimming mode control LED, problem voltage regulating mode can avoided and adjust current system to bring.LED light-dimming method conventional at present has three kinds:
One is adopt remote controller to control.LED control circuit is equipped with remote control device, can have grade light modulation or stepless dimming by remote controller to LED, and its shortcoming is that a LED needs outfit remote controller, causes remote controller quantity many, and management trouble, cost is also higher.
Two is adopt digital control technology.Such as, adopt the lighting interface of DALI(digital address) technology, DALI systems soft ware can carry out independent addressing to the single or multiple LED lamp on same forceful electric power loop or different circuit, carries out accurate light modulation and switch control rule by DALI systems soft ware to single lamp or arbitrary lamp group.Program advanced technology, but cost is very high, and system, except power line laid by needs, also needs to lay control line.
Three is adopt single live wire switch on and off control technology.Such as, adopt NU102 special chip, the switch motion of common wall surface switch in official hour can be utilized, realize the brightness regulation of LED.But the method can only provide the adjustment brightness of 4 grades of LED, and the free requirement of switch motion.
Summary of the invention
The purpose of this utility model aims to provide a kind of when not increasing control signal wire and not using a teleswitch, utilize single phase poaer supply line to realize device that controlled rectification ripple regulates multiple LED brightness at a distance.
For achieving the above object, the technical scheme that the utility model is taked is:
Controlled rectification ripple regulates a device for multiple LED brightness at a distance, is made up of Commutation control unit and 4 LED brightness adjusting unit.
Described Commutation control unit is provided with phase line input terminal, zero line input terminal, the first controlled rectification lead-out terminal, the second controlled rectification lead-out terminal; Described phase line input terminal, zero line input terminal input single-phase 220V AC power; Described first controlled rectification lead-out terminal, the second controlled rectification lead-out terminal export controlled rectification voltage.
Described LED brightness adjusting unit is provided with the first controlled rectification input terminal, the second controlled rectification input terminal, and described first controlled rectification input terminal, the second controlled rectification input terminal are connected to the first controlled rectification lead-out terminal, the second controlled rectification lead-out terminal of Commutation control unit respectively.
Described Commutation control unit is made up of transformer, control power module, controllable rectifier module, zero passage detection module, single chip control module, trigger control module, the given module of brightness.
Two input terminals of described transformer are respectively phase line input terminal, zero line input terminal, and two lead-out terminals are respectively the first ac terminal, the second ac terminal; Described first ac terminal, the second ac terminal export the second AC power.
Described control power module, by controlling power supply single-phase rectification bridge and the first filter regulator circuit forms, exports the first DC supply; Two ac input ends of described control power supply single-phase rectification bridge are connected to the first ac terminal, the second ac terminal respectively; The rectification negative polarity end of described control power supply single-phase rectification bridge is publicly.
Described controllable rectifier module is made up of rectifier bridge UR1, bidirectional thyristor V1, bidirectional thyristor V2, bidirectional thyristor V3, bidirectional thyristor V4; 2 ac input ends of described rectifier bridge UR1 are connected to the first ac terminal and the second ac terminal respectively, and rectification output plus terminal is connected to the second plate of bidirectional thyristor V3, and rectification exports the second plate that negative terminal is connected to bidirectional thyristor V4; The first controlled rectification lead-out terminal is connected to after the first anode of bidirectional thyristor V1 is in parallel with the first anode of bidirectional thyristor V3; The second plate of bidirectional thyristor V1 is connected to the first ac terminal; The second controlled rectification lead-out terminal is connected to after the first anode of bidirectional thyristor V2 is in parallel with the first anode of bidirectional thyristor V4; The second plate of bidirectional thyristor V2 is connected to the second ac terminal.
Described trigger control module is made up of 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, is provided with and exchanges control input end, rectify control input.
The inside of described zero cross fired optocoupler U1, zero cross fired optocoupler U2, zero cross fired optocoupler U3, zero cross fired optocoupler U4 includes input light-emitting diode and exports optical controlled bidirectional thyrister.
Be connected in parallel to the first DC supply again and exchange control input end after described input current-limiting resistance R1 connects with the input light-emitting diode of zero cross fired optocoupler U1; Be connected in parallel to the first DC supply again and exchange control input end after input current-limiting resistance R2 connects with the input light-emitting diode of zero cross fired optocoupler U2; The first DC supply and rectify control input is connected in parallel to again after input current-limiting resistance R3 connects with the input light-emitting diode of zero cross fired optocoupler U3; The first DC supply and rectify control input is connected in parallel to again after input current-limiting resistance R4 connects with the input light-emitting diode of zero cross fired optocoupler U4.
Described output current limiting resistance R5 exports with zero cross fired optocoupler U1 inside the control pole and the first anode that are connected in parallel to bidirectional thyristor V1 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R6 exports with zero cross fired optocoupler U2 inside the control pole and the first anode that are connected in parallel to bidirectional thyristor V2 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R7 exports with zero cross fired optocoupler U3 inside the control pole and the first anode that are connected in parallel to bidirectional thyristor V3 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R8 exports with zero cross fired optocoupler U4 inside the control pole and the first anode that are connected in parallel to bidirectional thyristor V4 after optical controlled bidirectional thyrister is connected again.
Described zero passage detection module is made up of diode D1, resistance R9, voltage-stabiliser tube DW1, is provided with zero passage voltage input, zero-crossing pulse output; The two ends of resistance R9 are connected to diode D1 negative electrode and voltage-stabiliser tube DW1 negative electrode respectively; Diode D1 anode is zero passage voltage input, is connected to the first ac terminal; Voltage-stabiliser tube DW1 anode is connected to publicly; Voltage-stabiliser tube DW1 negative electrode is zero-crossing pulse output.
The given module of described brightness is provided with brightness Setting signal output; The given module of described brightness is made up of 4 potentiometers.
Described single chip control module includes brightness Setting signal input, signal acquisition input and two-way level signal output; Described brightness Setting signal input is connected to the brightness Setting signal output of the given module of brightness; The signal acquisition input of described single chip control module is connected to the zero-crossing pulse output of zero passage detection module; Described two-way level signal output is respectively and exchanges control output end, rectify control output; Described interchange control output end, rectify control output are connected to interchange control input end, the rectify control input of trigger control module respectively.
Described LED brightness adjusting unit forms by regulating power module, waveform sampling module, single-chip microcomputer adjustment module, address setting module, LED drive module.
Described adjustment power module inputs controlled rectification voltage, exports the second DC supply, is made up of adjustment power supply single-phase rectification bridge and the second filter regulator circuit; The rectification negative polarity end of described adjustment power supply single-phase rectification bridge is with reference to ground.
Described waveform sampling module is provided with sampling Waveform Input end and sampling pulse output, is made up of diode D2, resistance R12, voltage-stabiliser tube DW2; The two ends of resistance R12 are connected to diode D2 negative electrode and voltage-stabiliser tube DW2 negative electrode respectively; Diode D2 anode is sampling Waveform Input end, is connected to the second controlled rectification input terminal; Voltage-stabiliser tube DW2 anode is connected to reference to ground; Voltage-stabiliser tube DW2 negative electrode is sampling pulse output.
Single-chip microcomputer adjustment module has seizure input, address code input and pwm pulse output, and the seizure input of single-chip microcomputer adjustment module is connected to the sampling pulse output of waveform sampling module.
Described address setting module adopts toggle switch; Described toggle switch output is connected to the address code input of single-chip microcomputer adjustment module.
Described LED drive module is used for driving LED lamp and lights, and is provided with PWM brightness regulated signal input; Described PWM brightness regulated signal input is connected to the pwm pulse output of single-chip microcomputer adjustment module.
Described control power module is made up of diode D01, diode D02, diode D03, diode D04, electric capacity C1, three terminal regulator U5; Diode D01, diode D02, diode D03, diode D04 composition control power supply single-phase rectification bridge; Electric capacity C1 strobes, and is connected in parallel on the DC voltage output end controlling power supply single-phase rectification bridge; Three terminal regulator U5 input VIN is connected to the rectification positive ends controlling power supply single-phase rectification bridge; First DC supply exports from three terminal regulator U5 output VOUT.
Described adjustment power module is made up of diode D05, diode D06, diode D07, diode D08, electric capacity C2, three terminal regulator U6; Diode D05, diode D06, diode D07, diode D08 composition regulates power supply single-phase rectification bridge; Electric capacity C2 is connected in parallel on the DC voltage output end regulating power supply single-phase rectification bridge, strobes; Three terminal regulator U6 input VIN is connected to the rectification positive ends regulating power supply single-phase rectification bridge; Second DC supply exports from three terminal regulator U6 output VOUT.
Described single chip control module is made up of single-chip microprocessor MCU 1, crystal oscillator XT1; The model of described single-chip microprocessor MCU 1 is MSP430G2553; Described single-chip microcomputer adjustment module is made up of single-chip microprocessor MCU 2, crystal oscillator XT2; The model of described single-chip microprocessor MCU 2 is MSP430G2553.
Described LED drive module is made up of LED constant-current driver, diode D11, diode D12, diode D13, diode D14, electric capacity C3, inductance L G, resistance R14, fast recovery diode D15; The model of described LED constant-current driver is PT4115.
The beneficial effects of the utility model are, adopt power line independently to control multiple LED brightness at a distance, without the need to remote controller, without the need to control line; LED brightness can be divided into multiple grade as required; Rectified wave is adopted to transmit brightness control signal, the reduction of flicker and power factor when can not cause LED brightness regulation.
Accompanying drawing explanation
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 control section embodiment circuit diagram in Commutation control unit.
Waveform schematic diagram when Fig. 6 is embodiment transmission brightness control signal.
Fig. 7 is brightness control signal sending method.
Fig. 8 is LED brightness adjusting unit structure chart.
Fig. 9 is LED brightness adjusting unit adjustment portion embodiment circuit diagram.
Figure 10 is LED drive module embodiment circuit diagram.
Figure 11 is brightness reception and control method.
Embodiment
Also the utility model is described in further detail below by accompanying drawing, but execution mode of the present utility model is not limited thereto in conjunction with the embodiments.
Realize device of the present utility model by Commutation control unit and
mindividual LED brightness adjusting unit composition,
mfor being more than or equal to the integer of 2.There is the device embodiment system architecture diagram of 4 LED brightness adjusting unit as shown in Figure 1, Commutation control unit, by phase line input terminal L, zero line input terminal N input single-phase 220V AC power, exports controlled rectification voltage by the first controlled rectification lead-out terminal AC1, the second controlled rectification lead-out terminal AC2.1-4#LED lamp brightness adjusting unit inputs controlled rectification voltage by the first controlled rectification input terminal AC1, the second controlled rectification input terminal AC2 and controls LED brightness.
The structure of Commutation control unit as shown in Figure 2, is made up of transformer, control power module, controllable rectifier module, zero passage detection module, single chip control module, trigger control module, the given module of brightness.
Two input terminals of transformer are respectively phase line input terminal L, zero line input terminal N, and two lead-out terminals are respectively the first ac terminal L1, the second ac terminal N1.First ac terminal L1, the second ac terminal N1 export the second AC power.The voltage effective value of the single-phase 220V AC power that the voltage effective value of the second AC power inputs lower than Commutation control unit.
The embodiment of controllable rectifier module as shown in Figure 3, is made up of rectifier bridge UR1, bidirectional thyristor V1, bidirectional thyristor V2, bidirectional thyristor V3, bidirectional thyristor V4.2 ac input ends of rectifier bridge UR1 are connected to the first ac terminal L1 and the second ac terminal N1 respectively, and rectification output plus terminal is connected to the second plate of bidirectional thyristor V3, and rectification exports the second plate that negative terminal is connected to bidirectional thyristor V4; The first controlled rectification lead-out terminal AC1 is connected to after the first anode of bidirectional thyristor V1 is in parallel with the first anode of bidirectional thyristor V3; The second plate of bidirectional thyristor V1 is connected to the first ac terminal L1; The second controlled rectification lead-out terminal AC2 is connected to after the first anode of bidirectional thyristor V2 is in parallel with the first anode of bidirectional thyristor V4; The second plate of bidirectional thyristor V2 is connected to the second ac terminal N1.
The trigger impulse of bidirectional thyristor V1 controls pole K11 and first anode K12 from it and inputs, the trigger impulse of bidirectional thyristor V2 controls pole K21 and first anode K22 from it and inputs, the trigger impulse of bidirectional thyristor V3 controls pole K31 and first anode K32 from it and inputs, and the trigger impulse of bidirectional thyristor V4 controls pole K41 and first anode K42 from it and inputs.
Rectifier bridge UR1 adopts single-phase rectification bridge stack, or adopts 4 diode composition single-phase rectification bridges to replace.
The embodiment of trigger control module as shown in Figure 4, is made up of zero cross fired optocoupler U1-U4 and input current-limiting resistance R1-R4, output current limiting resistance R5-R8, is provided with and exchanges control input end KJ, rectify control input KZ.The inside of zero cross fired optocoupler U1-U4 includes input light-emitting diode, exports optical controlled bidirectional thyrister, and zero-cross triggering circuit.The model of zero cross fired optocoupler U1-U4 is selected in MOC3041, MOC3042, MOC3043, MOC3061, MOC3062, MOC3063.
Input current-limiting resistance R1 connects with the input light-emitting diode of zero cross fired optocoupler U1, and series circuit is connected in parallel to the first DC supply VDD1 again and exchanges control input end KJ.Input current-limiting resistance R1 is connected on the input light-emitting diodes tube anode of zero cross fired optocoupler U1, as shown in Figure 4; Input current-limiting resistance R1 also can be connected on the negative electrode of the input light-emitting diode of zero cross fired optocoupler U1.
Input current-limiting resistance R2 connects with the input light-emitting diode of zero cross fired optocoupler U2, and series circuit is connected in parallel to the first DC supply VDD1 again and exchanges control input end KJ.Input current-limiting resistance R3 connects with the input light-emitting diode of zero cross fired optocoupler U3, and series circuit is connected in parallel to the first DC supply VDD1 and rectify control input KZ again.Input current-limiting resistance R4 connects with the input light-emitting diode of zero cross fired optocoupler U4, and series circuit is connected in parallel to the first DC supply VDD1 and rectify control input KZ again.Input 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 the input light-emitting diodes tube cathode of corresponding zero cross fired optocoupler can be connected on.
Output current limiting resistance R5 exports with zero cross fired optocoupler U1 inside the control pole K11 and the first anode K12 that are connected in parallel to bidirectional thyristor V1 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R6 exports with zero cross fired optocoupler U2 inside the control pole K21 and the first anode K22 that are connected in parallel to bidirectional thyristor V2 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R7 exports with zero cross fired optocoupler U3 inside the control pole K31 and the first anode K32 that are connected in parallel to bidirectional thyristor V3 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R8 exports with zero cross fired optocoupler U4 inside the control pole K41 and the first anode K42 that are connected in parallel to bidirectional thyristor V4 after optical controlled bidirectional thyrister is connected again.
In Commutation control unit, control section comprises control power module, zero passage detection module, single chip control module, the given module of brightness, and embodiment circuit as shown in Figure 5.
Controlling power module and be input as the second AC power, exporting the first DC supply VDD1 for providing to Commutation control unit.In Fig. 5 embodiment, control power module and be made up of diode D01, diode D02, diode D03, diode D04, electric capacity C1, three terminal regulator U5.Diode D01, diode D02, diode D03, diode D04 composition control power supply single-phase rectification bridge; Electric capacity C1 is connected in parallel on the DC voltage output end controlling power supply single-phase rectification bridge, strobes; Three terminal regulator U5 input VIN is connected to the rectification positive ends controlling power supply single-phase rectification bridge; First DC supply VDD1 exports from three terminal regulator U5 output VOUT.The rectification negative polarity end controlling power supply single-phase rectification bridge is publicly.Three terminal regulator U5 selects H7233.
Control power module and can also adopt other implementations.The control power supply single-phase rectification bridge of diode D01, diode D02, diode D03, diode D04 composition can replace with single-phase rectification bridge stack, and three terminal regulator U5 can adopt voltage-stabiliser tube voltage stabilizing circuit or DC/DC pressurizer.
Zero passage detection module is detection shaping circuit, is provided with zero-crossing pulse output and exports zero-crossing pulse.In Fig. 5 embodiment, zero passage detection module is made up of diode D1, resistance R9, voltage-stabiliser tube DW1.The two ends of resistance R9 are connected to diode D1 negative electrode and voltage-stabiliser tube DW1 negative electrode respectively, and diode D1 anode is connected to the first ac terminal L1, and voltage-stabiliser tube DW1 anode is connected to publicly.Voltage-stabiliser tube DW1 negative electrode is the zero-crossing pulse output exporting zero-crossing pulse.
The brightness degree of brightness Setting signal is brightness 1-
n;
nfor being more than or equal to the integer of 2.Have
mthe device of individual LED brightness adjusting unit, the brightness Setting signal that the given module of its brightness exports include with
mindividual LED brightness adjusting unit brightness degree specified rate one to one.In Fig. 5 embodiment, the given module of brightness adopts potentiometer RW1, potentiometer RW2, potentiometer RW3, potentiometer RW4 to carry out dividing potential drop to the first DC supply VDD1 respectively, and the brightness Setting signal obtained is brightness given voltage V1, brightness given voltage V2, brightness given voltage V3, the given voltage V4 of brightness corresponding with 1-4#LED lamp brightness adjusting unit respectively.Brightness given voltage V1, brightness given voltage V2, brightness given voltage V3, the given voltage V4 of brightness are divided into
nindividual voltage range, each voltage range is corresponding with the brightness degree of brightness Setting signal respectively, the interval corresponding brightness 1 of minimum voltage, the interval corresponding brightness of ceiling voltage
n.When adopting potentiometer input brightness Setting signal, have
mthe device of individual LED brightness adjusting unit, the given module of its brightness by
mindividual potentiometer composition.
The given module of brightness also can adopt other devices such as rotary encoder, toggle switch, pulse potential device to realize.
Single chip control module includes brightness Setting signal input, 1 road signal acquisition input, 2 tunnel level signal outputs.Brightness Setting signal input is connected to the brightness Setting signal output of the given module of brightness; 1 road signal acquisition input is connected to the zero-crossing pulse output of zero passage detection module, input zero-crossing pulse; 2 tunnel level signal outputs, for exchanging control output end KJ, rectify control output KZ, are connected to the interchange control input end KJ of trigger control module, rectify control input KZ respectively.
In Fig. 5 embodiment, single chip control module is made up of single-chip microprocessor MCU 1, crystal oscillator XT1, and the model of single-chip microprocessor MCU 1 is MSP430G2553.The analog voltage input A0-A3 of single-chip microprocessor MCU 1 is brightness Setting signal input, inputs brightness given voltage V1, brightness given voltage V2, brightness given voltage V3, the given voltage V4 of brightness successively.If adopt other devices to send the brightness Setting signal of switching value, digital quantity form, can input from other I/O mouths of single-chip microprocessor MCU 1.Single-chip microprocessor MCU 1 carries out A/D conversion by the given voltage of brightness inputted analog voltage input A0-A3, or reads the input signal of I/O mouth, obtains the brightness degree of brightness Setting signal.The P2.0 of single-chip microprocessor MCU 1 is signal acquisition input, is connected to the zero-crossing pulse output of zero passage detection module.P2.1, P2.2 of single-chip microprocessor MCU 1 are level signal outputs, and wherein P2.1 is interchange control output end KJ, P2.2 is rectify control output KZ; Exchange interchange control input end KJ, rectify control input KZ that control output end KJ, rectify control output KZ are connected to trigger control module respectively.
First controlled rectification lead-out terminal AC1, the second controlled rectification lead-out terminal AC2 of Commutation control unit export controlled rectification voltage, Commutation control unit sends brightness control signal by controlling controlled rectification voltage, and brightness control signal is by guide wave, address ripple, brightness wave component.The effective value of controlled rectification voltage is identical with the voltage effective value of the second AC power.
Total brightness 1-in described brightness control signal
n, altogether
nindividual brightness degree.
Described guide wave by
zthe waves AC composition of-1 power frequency period rectified wave and 1 power frequency period, rectified wave is front, and waves AC is rear;
zfor being more than or equal to the integer of 2.
Described address ripple is
ythe controlled rectification voltage wave of individual power frequency period,
yfor being more than or equal to the integer of 2.
ywith
mbetween relation be
mbe less than or equal to 2
y .
Described brightness ripple is
xthe controlled rectification voltage wave of individual power frequency period,
xfor being more than or equal to the integer of 2.Described brightness control signal has brightness 1-
n, altogether
nindividual brightness degree;
nfor being more than or equal to 2, being less than or equal to 2
x integer.The brightness 1-of brightness control signal brightness degree
nwith the brightness 1-of brightness Setting signal brightness degree
nbetween one_to_one corresponding.
Described controlled rectification voltage wave, refers to that the voltage wave of wherein each power frequency period is rectified wave, or waves AC.
xthe brightness ripple of individual power frequency period is corresponding
xposition binary system brightness code,
ythe address ripple of individual power frequency period is corresponding
yposition binary address code;
ythe address ripple of individual power frequency period with
xthe brightness ripple of individual power frequency period forms data wave jointly,
yposition binary address code with
xposition binary system brightness code forms numeric data code jointly.In each power frequency period of data wave, when its controlled rectification voltage wave is waves AC, corresponding numeric data code is 0; In each power frequency period, when its controlled rectification voltage wave is rectified wave, corresponding numeric data code is 1.Or in each power frequency period of data wave, when its controlled rectification voltage wave is waves AC, corresponding data are 1; In each power frequency period, when its controlled rectification voltage wave is rectified wave, corresponding numeric data code is 0.
During Commutation control unit transmission brightness control signal, waveform embodiment as shown in Figure 6.In embodiment illustrated in fig. 6
zequal 3,
yequal 2,
xequal 3; Brightness control signal has brightness 1-8, totally 8 brightness degrees; The 000-111 of brightness code represents brightness 1-8 successively; Commutation control unit can control at most 4 LED brightness adjusting unit; The 00-11 of address code represents control 1-4#LED lamp brightness adjusting unit successively.
What Fig. 6 sent is control 2#LED lamp brightness adjusting unit, brightness degree is the brightness control signal of brightness 7.Fig. 6 (a) is the waveform of controlled rectification voltage, and T1 interval is wherein guide wave, is made up of the rectified wave of 2 power frequency periods and the waves AC of 1 power frequency period.T2 interval is address ripple, i.e. the controlled rectification voltage wave of 2 power frequency periods.T3 interval is brightness ripple, i.e. the controlled rectification voltage wave of 3 power frequency periods.In the controlled rectification voltage wave of the address ripple of embodiment and brightness ripple totally 5 power frequency periods, when the controlled rectification voltage wave of each power frequency period is waves AC, corresponding numeric data code is 0; When controlled rectification voltage wave in each power frequency period is rectified wave, corresponding numeric data code is 1.In address ripple embodiment illustrated in fig. 6,2 power frequency periods are followed successively by waves AC, rectified wave, and corresponding 2 binary address codes are 01, the LED brightness of representative control 2#LED lamp brightness adjusting unit; In brightness ripple embodiment illustrated in fig. 6,3 power frequency periods are followed successively by rectified wave, rectified wave, waves AC, and corresponding 3 binary system brightness codes are 110, and the brightness degree representing this brightness control signal is brightness 7.
The step that single chip control module sends a brightness control signal is as follows:
Step 1, waits for, until enter step 2 when receiving the rising edge of zero-crossing pulse;
Step 2, stops exchanging output, starts rectification and exports;
Step 3, to the zero-crossing pulse rising edge counting received, count value reaches
zstep 4 is entered when-1;
Step 4, stops rectification exporting, and starts to exchange to export;
Step 5, waits for, until enter step 6 when receiving the rising edge of zero-crossing pulse;
Step 6, sends the controlled rectification voltage wave of 1 power frequency period;
Step 7, waits for, until enter step 8 when receiving the rising edge of zero-crossing pulse;
Step 8, sends
y+
xforward step 9 to during the controlled rectification voltage wave of individual power frequency period, otherwise return step 6;
Step 9, stops rectification exporting, and starts to exchange to export.
Commutation control unit is not when normal maintenance sends brightness control signal state, single chip control module controls to exchange control output end KJ and exports useful signal, rectify control output KZ exports invalid signals, the input LEDs ON of zero cross fired optocoupler U1 and U2, the input light-emitting diode cut-off of zero cross fired optocoupler U3 and U4, bidirectional thyristor V1, bidirectional thyristor V2 conducting, bidirectional thyristor V3, bidirectional thyristor V4 ends, first controlled rectification lead-out terminal AC1, the controlled rectification voltage that second controlled rectification lead-out terminal AC2 exports is alternating voltage.In the embodiment shown in fig. 4, the interchange control output end KJ of single chip control module output, the signal of rectify control output KZ are Low level effective.
The zero-crossing pulse that the module of zero passage detection shown in Fig. 5 exports is corresponding with the positive half wave of the second AC power, and the width of zero-crossing pulse is less than the second AC power positive half wave width.Described second AC power positive half wave is the second AC power half-wave of the first ac terminal current potential higher than the second ac terminal current potential.
Single chip control module enters step 2 after the zero-crossing pulse rising edge corresponding with half-wave in Fig. 61 being detected.Described stopping exchanges and exports, and refer to that controlling to exchange control output end KJ exports invalid signals, from the next zero crossing of the second AC power, bidirectional thyristor V1, bidirectional thyristor V2 end; Described beginning rectification exports, refer to that controlling rectify control output KZ exports useful signal, from the next zero crossing of the second AC power, bidirectional thyristor V3, bidirectional thyristor V4 conducting, the controlled rectification voltage that the first controlled rectification lead-out terminal AC1, the second controlled rectification lead-out terminal AC2 export is commutating voltage.
Described stopping rectification exporting, and refer to that controlling rectify control output KZ exports invalid signals, from the next zero crossing of the second AC power, bidirectional thyristor V3, bidirectional thyristor V4 end; Described beginning exchanges output, refer to that controlling to exchange control output end KJ exports useful signal, from the next zero crossing of the second AC power, bidirectional thyristor V1, bidirectional thyristor V2 conducting, the controlled rectification voltage that the first controlled rectification lead-out terminal AC1, the second controlled rectification lead-out terminal AC2 export is alternating voltage.
The described controlled rectification voltage wave sending 1 power frequency period, its method is, judges that the controlled rectification voltage wave of this power frequency period needing in data wave to send is waves AC or rectified wave, if waves AC, then stops rectification exporting, and starts to exchange to export; If rectified wave, then stop exchanging exporting, start rectification and export.
Each single power frequency period in described controlled rectification voltage wave is waves AC, or rectified wave; The waves AC of single power frequency period is by 1 single phase alternating current power supply positive half wave and 1 negative half wave component of single phase alternating current power supply, and positive half wave is front, and negative half-wave is rear; The rectified wave of single power frequency period is made up of 2 rectified half-waves, and first rectified half-waves is corresponding with the second AC power positive half wave, and it is corresponding that second rectified half-waves and the second AC power bear half-wave.The time of described power frequency period is 20ms.Described single power frequency period is 1 power frequency period.
Send
y+
xin the controlled rectification voltage wave of individual power frequency period, front
ythe controlled rectification voltage wave of individual power frequency period is address ripple, after
xthe controlled rectification voltage wave of individual power frequency period is brightness ripple.
Commutation control unit sends the method for brightness control signal as shown in Figure 7, comprising:
Steps A, reads brightness Setting signal;
Step B, sends successively
mthe brightness control signal of individual LED brightness adjusting unit;
Step C, judges whether brightness changes, and brightness changes, and forwards step D to; Brightness does not change, and returns step C;
Step D, composition brightness control signal also sends, and returns step C.
Send successively
mthe brightness control signal of individual LED brightness adjusting unit, its objective is to each LED brightness adjusting unit and all sends brightness control signal, control respective original intensity.
Judge that the method whether brightness changes is, judges in brightness Setting signal
mwhether the brightness degree of individual LED brightness adjusting unit changes; As long as brightness Setting signal has the brightness degree of 1 LED brightness adjusting unit to change, then brightness changes.
Composition brightness control signal also sends, method is, when judging that certain LED brightness adjusting unit brightness changes, brightness degree after this change is converted to the brightness ripple address ripple corresponding to this LED brightness adjusting unit and carries out the verification ripple that parity check obtains, form brightness control signal and send together with guide wave.
The structure of LED brightness adjusting unit as shown in Figure 8, is made up of adjustment power module, waveform sampling module, single-chip microcomputer adjustment module, address setting module, LED drive module.All
mcircuit structure and the operation principle of individual LED brightness adjusting unit are just the same.
The adjustment portion of LED brightness adjusting unit comprises adjustment power module, waveform sampling module, single-chip microcomputer adjustment module, address setting module, and embodiment as shown in Figure 9.
Power module is regulated to provide the second DC supply VDD2 for LED brightness adjusting unit.In Fig. 9 embodiment, power module is regulated to be made up of diode D05, diode D06, diode D07, diode D08, electric capacity C2, three terminal regulator U6.Diode D05, diode D06, diode D07, diode D08 composition regulates power supply single-phase rectification bridge; Electric capacity C2 is connected in parallel on the DC voltage output end regulating power supply single-phase rectification bridge, strobes; Three terminal regulator U6 input VIN is connected to the rectification positive ends regulating power supply single-phase rectification bridge; Second DC supply VDD2 exports from three terminal regulator U6 output VOUT.The rectification negative polarity end of power supply single-phase rectification bridge is regulated to be with reference to ground.Three terminal regulator U6 selects H7233.
Regulate power module can also adopt other implementations.The adjustment power supply single-phase rectification bridge of diode D05, diode D06, diode D07, diode D08 composition can replace with single-phase rectification bridge stack, and three terminal regulator U6 can adopt voltage-stabiliser tube voltage stabilizing circuit or DC/DC pressurizer.
Waveform sampling module is detection shaping circuit, is provided with sampling Waveform Input end and sampling pulse output.In Fig. 9 embodiment, waveform sampling module is made up of diode D2, resistance R12, voltage-stabiliser tube DW2.The two ends of resistance R12 are connected to diode D2 negative electrode and voltage-stabiliser tube DW2 negative electrode respectively; Diode D2 anode is sampling Waveform Input end, is connected to the second controlled rectification input terminal AC2; Voltage-stabiliser tube DW2 anode is connected to reference to ground; Voltage-stabiliser tube DW2 negative electrode is sampling pulse output.
Single-chip microcomputer adjustment module has seizure input, address code input and pwm pulse output, catches the sampling pulse output that input is connected to waveform sampling module.In Fig. 9 embodiment, single-chip microcomputer adjustment module is made up of single-chip microprocessor MCU 2, crystal oscillator XT2, and the model of single-chip microprocessor MCU 2 is MSP430G2553, and the seizure input of single-chip microprocessor MCU 2 is P2.0, and pwm pulse output is P1.2.
Address setting module, for setting the address code of place LED brightness adjusting unit, is provided with address code output.The address code output of address setting module is connected to the address code input of single-chip microcomputer adjustment module.Have 4 LED brightness adjusting unit in embodiment, corresponding 2 the binary address codes of 1-4#LED lamp brightness adjusting unit are 00,01,10,11 respectively.In Fig. 9 embodiment, 2 binary address codes adopt toggle switch SW1 to set, the common port COM of toggle switch SW1 is connected to reference to ground, output S1, S2 of toggle switch SW1 are address code outputs, be connected to single-chip microcomputer adjustment module P1.4, the address code input of single-chip microcomputer adjustment module in embodiment that P1.5, P1.4, P1.5 are.
LED drive module is used for driving LED lamp and lights, and the LED drive module being provided with PWM brightness regulated signal input can be applicable to the utility model, is only one of them embodiment circuit shown in Figure 10.The PWM brightness regulated signal input of LED drive module is connected to the pwm pulse output of single-chip microcomputer adjustment module.
In embodiment illustrated in fig. 10, LED drive module is made up of LED constant-current driver U7, diode D11, diode D12, diode D13, diode D14, electric capacity C3, inductance L G, resistance R14, fast recovery diode D15, and the model of LED constant-current driver U7 is PT4115.
In Figure 10 embodiment, diode D11, diode D12, diode D13, diode D14 form single phase bridge type rectifier circu.2 ac input ends of single phase bridge type rectifier circu are connected to the first controlled rectification input terminal AC1 and the second controlled rectification input terminal AC2 respectively, direct current exports negative terminal and is connected to reference to ground, and direct current output plus terminal is connected to the power input VIN of electric capacity C3 positive pole, LED driver U7; The two ends of resistance R14 are connected to power voltage terminal VIN, the output current induction end SEN of LED constant-current driver U7 respectively; The output switching terminal SW that fast recovery diode D15 negative electrode is connected to the power voltage terminal VIN of LED constant-current driver U7, anode is connected to LED constant-current driver U7; One end of inductance L G is connected to the output switching terminal SW of LED constant-current driver U7; The other one end of the output current induction end SEN of LED constant-current driver U7 and inductance L G is LED drive end, is connected to LED; The ground input GND of LED constant-current driver U7 is connected to reference to ground.The brightness adjustment control end DIM of LED constant-current driver U7 is PWM brightness regulated signal input.
LED brightness adjusting unit receives brightness control signal and adjusting brightness of LED lamps, and its method as shown in figure 11, comprising:
Step one, initialization, the original intensity grade of setting LED;
Step 2, regulates LED luminance;
Step 3, has judged whether brightness control signal; There is no brightness control signal, return step 3; There is brightness control signal, forward step 4 to;
Step 4, receives brightness control signal;
Step 5, judges whether the address code received sets address code with place LED brightness adjusting unit and be consistent, and is consistent, returns step 2; Inconsistent, return step 3.
The method of LED luminance is regulated to be that single-chip microcomputer adjustment module calculates PWM value according to the brightness degree of the LED set or receive, and sends corresponding pwm pulse.
The original intensity grade of LED can be set as
none in individual brightness degree, such as, setting original intensity grade is grade 2.When brightness degree is grade 1, the brightness of LED is minimum; The special case of LED minimum brightness extinguishes LED.
Judged whether brightness control signal, method is judge whether the controlled rectification voltage inputted from the first controlled rectification input terminal AC1, the second controlled rectification input terminal AC2 has guide wave.
Receive brightness control signal, method receives
y+
xthe controlled rectification voltage wave of individual power frequency period, by front
ythe controlled rectification voltage wave of individual power frequency period is converted to
yposition binary address code, afterwards
xthe controlled rectification voltage wave of individual power frequency period is converted to
xposition binary system brightness code; Again will
xposition binary system brightness code is converted to brightness degree.
The function of waveform sampling module carries out detection shaping to controlled rectification voltage.In Fig. 9 embodiment, waveform sampling module is detected lower than the waveform of the second controlled rectification input terminal AC2 by the first controlled rectification input terminal AC1 current potential and amplitude limit obtains sampling pulse, exports the seizure input of single-chip microcomputer adjustment module to; The positive pulse of sampling pulse is corresponding lower than the half-wave of the second controlled rectification input terminal current potential with the first controlled rectification input terminal current potential, and sampling pulse positive pulse width is less than this half band-width.The sampling pulse example of embodiment as shown in Figure 6 (b); When controlled rectification voltage is alternating voltage, sampling pulse be duty ratio be less than 50%, with the square wave of the second AC power same frequency; When controlled rectification voltage is commutating voltage, sampling pulse is low level.
In embodiment illustrated in fig. 6, guide wave is made up of the rectified wave of 2 power frequency periods and the waves AC of 1 power frequency period, the square wave of to be the cycle the be power frequency period of the sampling pulse before guide wave.The rectified wave of 2 power frequency periods should make to occur in sampling pulse that width is the low level in 40ms, i.e. 2 power frequency period intervals, but in fact guide wave makes to occur in sampling pulse that width is the low level close to 50ms, namely 2.5 power frequency period interval, the interval T5 of low level as shown in Figure 6; The low level in 0.5 the power frequency period interval had more is produced by the positive half wave of 1 power frequency period waves AC after immediately; In guide wave, the negative half-wave of the waves AC of 1 power frequency period makes to occur in sampling pulse that width is the high level in 0.5 power frequency period interval, the interval T6 of high level as shown in Figure 6.
Judge whether controlled rectification voltage has guide wave, method is, judges to exceed after power frequency period square wave in sampling pulse the interval power frequency period number of low level of power frequency period width; If there is power frequency period number to be in sampling pulse
zthe low level of-1 is interval, then have guide wave in controlled rectification voltage; If do not have power frequency period number to be in sampling pulse
zthe low level of-1 is interval, then do not have guide wave in controlled rectification voltage.
The method judging to exceed after power frequency period square wave in sampling pulse the interval power frequency period number of low level of power frequency period width is, width is measured to the low level pulse exceeding power frequency period width after power frequency period square wave in sampling pulse, if measure the low level pulse width exceeding power frequency period width obtained is
w, then the power frequency period number in this low level interval is INT(
w/20); The function of INT function is that fractions omitted part rounds.
ythe address ripple of individual power frequency period or
xin the brightness ripple of individual power frequency period, 1 corresponding 1 binary address code of power frequency period or brightness code.When the voltage wave of 1 power frequency period is rectified wave, the sampling pulse corresponding with it is the low level in 1 power frequency period interval; When the voltage wave of 1 power frequency period is waves AC, the sampling pulse corresponding with it is the square wave that 1 duty ratio is less than 50%.In embodiment illustrated in fig. 6, address ripple is the controlled rectification voltage wave of continuous 2 power frequency periods, the waves AC that namely interval T7 is corresponding, the rectified wave that interval T8 is corresponding; 2 binary address codes are 01.Brightness ripple is the controlled rectification voltage wave of continuous 3 power frequency periods, the rectified wave that namely interval T9 is corresponding, rectified wave that interval T10 is corresponding, the waves AC that interval T11 is corresponding; 3 binary system brightness codes are 110.
To receive
y+
xbefore in the controlled rectification voltage wave of individual power frequency period
ythe controlled rectification voltage wave of individual power frequency period is converted to
yposition binary address code, afterwards
xthe controlled rectification voltage wave of individual power frequency period is converted to
xthe method of position binary system brightness code is, after guide wave
yin individual power frequency period interval, when the sampling pulse in 1 power frequency period interval is low level, this binary address code corresponding is 1, when the sampling pulse in 1 power frequency period interval be 1 duty ratio be less than the square wave of 50% time, this binary address code is 0 accordingly; After guide wave
y+ 1 to
y+
xin power frequency period interval, when the sampling pulse in 1 power frequency period interval is low level, this binary system brightness code corresponding is 1, when the sampling pulse in 1 power frequency period interval be 1 duty ratio be less than the square wave of 50% time, this binary system brightness code is 0 accordingly.Or, after guide wave
yin individual power frequency period interval, when the sampling pulse in 1 power frequency period interval is low level, this binary address code corresponding is 0, when the sampling pulse in 1 power frequency period interval be 1 duty ratio be less than the square wave of 50% time, this binary address code is 1 accordingly; After guide wave
y+ 1 to
y+
xin individual power frequency period interval, when the sampling pulse in 1 power frequency period interval is low level, this binary system brightness code corresponding is 0, when the sampling pulse in 1 power frequency period interval be 1 duty ratio be less than the square wave of 50% time, this binary system brightness code is 1 accordingly.
xbinary system brightness code in position is converted to that brightness degree can use calculating, the method such as to table look-up.In embodiment, the scope of 3 binary system brightness codes is 000-111, and the brightness degree scope of representative is brightness 1-8; When brightness code is 000, brightness degree is 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 is directly powered to the adjustment power module of all LED brightness adjusting unit, LED drive module and waveform sampling module, first adjustment power module wherein, LED drive module carry out rectification to controlled rectification voltage, again after capacitor filtering, provide power supply to interlock circuit; When controlled rectification voltage is zero, the source current of adjustment power module, LED drive module is also zero; Waveform sampling module is non-linear resistive load, and when controlled rectification voltage is zero, the source current of waveform sampling module is zero.Therefore, when controlled rectification voltage is zero, it is zero to the source current that LED brightness adjusting unit provides.So, Commutation control unit carries out stopping at the zero crossing of the second AC power to exchange output, starts rectification output, or stop rectification export, start exchange export switching time, can the successful change of current between bidirectional thyristor V1, bidirectional thyristor V2 and bidirectional thyristor V3, bidirectional thyristor V4, unlikelyly cause power supply short circuit.
The brightness Setting signal of the analog voltage form that single-chip microprocessor MCU 1 provides according to the given module of brightness or digital form and the zero-crossing pulse received, control sends triggering signal, and the width of sampling pulse that inputs according to pulse capture input of single-chip microprocessor MCU 2 or quantity identify brightness control signal, sending the brightness that pwm signal controls LED, is the routine techniques that those skilled in the art grasp.
The utility model has following features:
1. power line is adopted independently to control multiple LED brightness at a distance, without the need to remote controller, without the need to control line;
2. LED brightness can be divided into multiple grade as required;
3. rectified wave is adopted to transmit brightness control signal, the reduction of flicker and power factor when can not cause LED brightness regulation.
Claims (6)
1. controlled rectification ripple regulates a device for multiple LED brightness at a distance, it is characterized in that:
Be made up of Commutation control unit and 4 LED brightness adjusting unit;
Described Commutation control unit is provided with phase line input terminal, zero line input terminal, the first controlled rectification lead-out terminal, the second controlled rectification lead-out terminal; Described phase line input terminal, zero line input terminal input single-phase 220V AC power; Described first controlled rectification lead-out terminal, the second controlled rectification lead-out terminal export controlled rectification voltage;
Described LED brightness adjusting unit is provided with the first controlled rectification input terminal, the second controlled rectification input terminal, and described first controlled rectification input terminal, the second controlled rectification input terminal are connected to the first controlled rectification lead-out terminal, the second controlled rectification lead-out terminal of Commutation control unit respectively;
Described Commutation control unit is made up of transformer, control power module, controllable rectifier module, zero passage detection module, single chip control module, trigger control module, the given module of brightness;
Two input terminals of described transformer are respectively phase line input terminal, zero line input terminal, and two lead-out terminals are respectively the first ac terminal, the second ac terminal; Described first ac terminal, the second ac terminal export the second AC power;
Described control power module, by controlling power supply single-phase rectification bridge and the first filter regulator circuit forms, exports the first DC supply; Two ac input ends of described control power supply single-phase rectification bridge are connected to the first ac terminal, the second ac terminal respectively; The rectification negative polarity end of described control power supply single-phase rectification bridge is publicly;
Described controllable rectifier module is made up of rectifier bridge UR1, bidirectional thyristor V1, bidirectional thyristor V2, bidirectional thyristor V3, bidirectional thyristor V4; 2 ac input ends of described rectifier bridge UR1 are connected to the first ac terminal and the second ac terminal respectively, and rectification output plus terminal is connected to the second plate of bidirectional thyristor V3, and rectification exports the second plate that negative terminal is connected to bidirectional thyristor V4; The first controlled rectification lead-out terminal is connected to after the first anode of bidirectional thyristor V1 is in parallel with the first anode of bidirectional thyristor V3; The second plate of bidirectional thyristor V1 is connected to the first ac terminal; The second controlled rectification lead-out terminal is connected to after the first anode of bidirectional thyristor V2 is in parallel with the first anode of bidirectional thyristor V4; The second plate of bidirectional thyristor V2 is connected to the second ac terminal;
Described trigger control module is made up of 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, is provided with and exchanges control input end, rectify control input;
The inside of described zero cross fired optocoupler U1, zero cross fired optocoupler U2, zero cross fired optocoupler U3, zero cross fired optocoupler U4 includes input light-emitting diode and exports optical controlled bidirectional thyrister;
Be connected in parallel to the first DC supply again and exchange control input end after described input current-limiting resistance R1 connects with the input light-emitting diode of zero cross fired optocoupler U1; Be connected in parallel to the first DC supply again and exchange control input end after input current-limiting resistance R2 connects with the input light-emitting diode of zero cross fired optocoupler U2; The first DC supply and rectify control input is connected in parallel to again after input current-limiting resistance R3 connects with the input light-emitting diode of zero cross fired optocoupler U3; The first DC supply and rectify control input is connected in parallel to again after input current-limiting resistance R4 connects with the input light-emitting diode of zero cross fired optocoupler U4;
Described output current limiting resistance R5 exports with zero cross fired optocoupler U1 inside the control pole and the first anode that are connected in parallel to bidirectional thyristor V1 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R6 exports with zero cross fired optocoupler U2 inside the control pole and the first anode that are connected in parallel to bidirectional thyristor V2 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R7 exports with zero cross fired optocoupler U3 inside the control pole and the first anode that are connected in parallel to bidirectional thyristor V3 after optical controlled bidirectional thyrister is connected again; Output current limiting resistance R8 exports with zero cross fired optocoupler U4 inside the control pole and the first anode that are connected in parallel to bidirectional thyristor V4 after optical controlled bidirectional thyrister is connected again;
Described zero passage detection module is made up of diode D1, resistance R9, voltage-stabiliser tube DW1, is provided with zero passage voltage input, zero-crossing pulse output; The two ends of resistance R9 are connected to diode D1 negative electrode and voltage-stabiliser tube DW1 negative electrode respectively; Diode D1 anode is zero passage voltage input, is connected to the first ac terminal; Voltage-stabiliser tube DW1 anode is connected to publicly; Voltage-stabiliser tube DW1 negative electrode is zero-crossing pulse output;
The given module of described brightness is provided with brightness Setting signal output; The given module of described brightness is made up of 4 potentiometers;
Described single chip control module includes brightness Setting signal input, signal acquisition input and two-way level signal output; Described brightness Setting signal input is connected to the brightness Setting signal output of the given module of brightness; The signal acquisition input of described single chip control module is connected to the zero-crossing pulse output of zero passage detection module; Described two-way level signal output is respectively and exchanges control output end, rectify control output; Described interchange control output end, rectify control output are connected to interchange control input end, the rectify control input of trigger control module respectively;
Described LED brightness adjusting unit forms by regulating power module, waveform sampling module, single-chip microcomputer adjustment module, address setting module, LED drive module;
Described adjustment power module inputs controlled rectification voltage, exports the second DC supply, is made up of adjustment power supply single-phase rectification bridge and the second filter regulator circuit; The rectification negative polarity end of described adjustment power supply single-phase rectification bridge is with reference to ground;
Described waveform sampling module is provided with sampling Waveform Input end and sampling pulse output, is made up of diode D2, resistance R12, voltage-stabiliser tube DW2; The two ends of resistance R12 are connected to diode D2 negative electrode and voltage-stabiliser tube DW2 negative electrode respectively; Diode D2 anode is sampling Waveform Input end, is connected to the second controlled rectification input terminal; Voltage-stabiliser tube DW2 anode is connected to reference to ground; Voltage-stabiliser tube DW2 negative electrode is sampling pulse output;
Single-chip microcomputer adjustment module has seizure input, address code input and pwm pulse output, and the seizure input of single-chip microcomputer adjustment module is connected to the sampling pulse output of waveform sampling module;
Described address setting module adopts toggle switch; Described toggle switch output is connected to the address code input of single-chip microcomputer adjustment module;
Described LED drive module is used for driving LED lamp and lights, and is provided with PWM brightness regulated signal input; Described PWM brightness regulated signal input is connected to the pwm pulse output of single-chip microcomputer adjustment module.
2. controlled rectification ripple according to claim 1 regulates the device of multiple LED brightness at a distance, it is characterized in that: described control power module is made up of diode D01, diode D02, diode D03, diode D04, electric capacity C1, three terminal regulator U5; Diode D01, diode D02, diode D03, diode D04 composition control power supply single-phase rectification bridge; Electric capacity C1 strobes, and is connected in parallel on the DC voltage output end controlling power supply single-phase rectification bridge; Three terminal regulator U5 input VIN is connected to the rectification positive ends controlling power supply single-phase rectification bridge; First DC supply exports from three terminal regulator U5 output VOUT.
3. controlled rectification ripple according to claim 1 regulates the device of multiple LED brightness at a distance, it is characterized in that: described adjustment power module is made up of diode D05, diode D06, diode D07, diode D08, electric capacity C2, three terminal regulator U6; Diode D05, diode D06, diode D07, diode D08 composition regulates power supply single-phase rectification bridge; Electric capacity C2 is connected in parallel on the DC voltage output end regulating power supply single-phase rectification bridge, strobes; Three terminal regulator U6 input VIN is connected to the rectification positive ends regulating power supply single-phase rectification bridge; Second DC supply exports from three terminal regulator U6 output VOUT.
4. controlled rectification ripple according to claim 1 regulates the device of multiple LED brightness at a distance, it is characterized in that: described single chip control module is made up of single-chip microprocessor MCU 1, crystal oscillator XT1; The model of described single-chip microprocessor MCU 1 is MSP430G2553.
5. controlled rectification ripple according to claim 1 regulates the device of multiple LED brightness at a distance, it is characterized in that: described single-chip microcomputer adjustment module is made up of single-chip microprocessor MCU 2, crystal oscillator XT2; The model of described single-chip microprocessor MCU 2 is MSP430G2553.
6. controlled rectification ripple according to claim 1 regulates the device of multiple LED brightness at a distance, it is characterized in that: described LED drive module is made up of LED constant-current driver, diode D11, diode D12, diode D13, diode D14, electric capacity C3, inductance L G, resistance R14, fast recovery diode D15; The model of described LED constant-current driver is PT4115.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520475480.7U CN204993953U (en) | 2015-07-06 | 2015-07-06 | Device of a plurality of LED lamp of controllable rectification ripples remote regulating luminance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520475480.7U CN204993953U (en) | 2015-07-06 | 2015-07-06 | Device of a plurality of LED lamp of controllable rectification ripples remote regulating luminance |
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| CN204993953U true CN204993953U (en) | 2016-01-20 |
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| CN201520475480.7U Expired - Fee Related CN204993953U (en) | 2015-07-06 | 2015-07-06 | Device of a plurality of LED lamp of controllable rectification ripples remote regulating luminance |
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| Country | Link |
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| CN (1) | CN204993953U (en) |
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