CN109195256A - It is a kind of list firewire on carry out phase shifting angle control method - Google Patents
It is a kind of list firewire on carry out phase shifting angle control method Download PDFInfo
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- CN109195256A CN109195256A CN201811144135.XA CN201811144135A CN109195256A CN 109195256 A CN109195256 A CN 109195256A CN 201811144135 A CN201811144135 A CN 201811144135A CN 109195256 A CN109195256 A CN 109195256A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
A kind of method that phase shifting angle control is carried out on list firewire, brightness wall control unit for being connected on single firewire realize the brightness control signal that control LED light is sent on single firewire.When needing to adjust brightness, the control of brightness wall control unit changes the phase shifting angle of single firewire output voltage waveforms to send brightness control signal, and in brightness control signal, the quantity for the single-phase half-sinusoid that brightness degree has a specific phase shifting angle with continuous is indicated；Brightness regulation driving unit changes the brightness of LED light according to the brightness degree in brightness control signal.Brightness wall control unit issue brightness control signal when, single continuous output phase of fire wire output end with phase shifting angle half-wave quantity be brightness control signal brightness degree.
Description
Present patent application is divisional application, and application No. is 201510229502.6, the applying date is on May 8th, 2015 for original bill,
A kind of entitled LED light wall controlled dimming method.
Technical field
The present invention relates to a kind of single fire line control technology, the method for phase shifting angle control is carried out on especially a kind of single firewire.
Background technique
Due to the nonlinear characteristic of LED light, the brightness of LED light cannot be realized by the way of adjusting voltage.
When adjusting the brightness of LED light using controllable constant-current source, the change of operating current can bring the chromatography of LED light inclined
It moves, meanwhile, LED light load current also becomes very low under low-light level, and the reduction of controllable constant-current source efficiency and temperature rise can be made to increase, be lost
Power consumption on driving chip is bigger, so that the service life of constant-current source and LED light source can be damaged.
LED light brightness is controlled using PWM (pulsewidth modulation) dimming mode, to avoid voltage regulating mode and current system band can be adjusted
The problem come.There are three types of currently used LED light light-dimming methods:
First is that using remote control control.LED light control circuit is equipped with remote controler reception device, can be by remote controler to LED light
It has carried out grade light modulation either stepless dimming and has caused remote controler quantity the disadvantage is that a LED light needs to be equipped with a remote controler
More, management bothers, and cost is also higher.
Second is that using digital control technology.For example, using DALI (lighting interface of digital address) technology, DALI system
Software can be separately addressed to the single or multiple LED lamps on same forceful electric power circuit or different circuit, pass through DALI system
Software is to single lamp or arbitrary lamp group is accurately dimmed and switch control.The program is technologically advanced, but cost is very high, system
In addition to needing to lay power line, it is also necessary to lay control line.
Third is that using single firewire switch on and off control technology.For example, using NU102 special chip, i.e., using common wall
The switch motion of face switch before the deadline, realizes the brightness regulation of LED light.But this method can only provide 4 grades of LED light
Adjust brightness, and the requirement of switch motion having time.
Summary of the invention
The purpose of the present invention is intended to provide a kind of method that phase shifting angle control is carried out on single firewire；Further, it utilizes
The phase shifting angle control method, which is realized, sends the brightness control signal of control LED light in single firewire, provides a kind of currently used LED
LED light brightness control method except lamp light-dimming method.
The method of phase shifting angle control is carried out on single firewire by including unidirectional thyristor, diode D01, diode D02, two poles
Pipe D03, diode D04, triode, resistance R2, resistance R3, resistance R4, resistance R5, resistance R01, resistance R02, voltage-stabiliser tube
The circuit realization of DW01, voltage-stabiliser tube DW1.
Diode D01, diode D02, diode D03, diode D04 form single phase bridge type rectifier circu, 2 exchanges
Input terminal is respectively single firewire input terminal, single fire wire output end；The rectification output plus terminal of single phase bridge type rectifier circu is that all-wave is whole
End is flowed, rectification output negative terminal is publicly.The list firewire input terminal is connected to AC power source firewire.
Anode, the cathode of unidirectional thyristor are respectively connected to full-wave rectification end, publicly, transistor collector series resistance
Voltage-stabiliser tube DW1 anode is connected to after R2, voltage-stabiliser tube DW1 cathode is connected to full-wave rectification end；Transistor emitter connects through resistance R3
It is connected to publicly；Transistor base is respectively connected to one end of resistance R4, resistance R5；The other end of resistance R4 is connected to public
Ground；Transistor emitter is connected to unidirectional thyristor control electrode；The other end of resistance R5 is trigger signal input terminal.
After resistance R01 is coupled with resistance R02, the other end of resistance R01 is connected to full-wave rectification end, resistance R02
Other end be connected to publicly, voltage-stabiliser tube DW01 is connected in parallel on the both ends resistance R02；Resistance R01 is coupled with the series connection of resistance R02
Point is phase shift sampling pulse output end.
The effective trigger signal of high level is maintained in trigger signal input terminal, single fire wire output end exports positive and negative half-wave phase shift
Angle is all the single-phase half-sinusoid of α；The size of phase shifting angle α is controlled by the pressure stabilizing value of voltage-stabiliser tube DW1.
The method that phase shifting angle control is β is: before AC power source zero passage, in trigger signal input terminal input low level, stopping
Effective trigger signal is issued, unidirectional thyristor turns off after AC power source zero passage；It reaches at phase shifting angle β, phase shift sampling pulse
When output end becomes high level from low level, in trigger signal input terminal input high level, effective trigger signal is issued, list is made
To turn on thyristors；After unidirectional thyristor conducting, phase shift sampling pulse output end becomes low level from high level.Repeat the mistake
Journey can then repeat to control phase shifting angle as β.The size of phase shifting angle β is controlled by the intrinsic standoff ratio of resistance R01, resistance R02；It is described
Phase shifting angle β is greater than phase shifting angle α, and representative value is phase shifting angle α=4 °, phase shifting angle β=30 °.
The method that phase shifting angle control is carried out on the list firewire sends the brightness control of control LED light for brightness wall control unit
Signal processed；Brightness wall control unit includes the circuit realized and carry out the method for phase shifting angle control on single firewire, that is, includes unidirectional
Thyristor, diode D01, diode D02, diode D03, diode D04, triode, resistance R2, resistance R3, resistance R4, electricity
Hinder the circuit of R5, resistance R01, resistance R02, voltage-stabiliser tube DW01, voltage-stabiliser tube DW1 and its composition；Brightness wall control unit further includes DC/
DC voltage-stablizer, three terminal regulator, wall control single-chip microcontroller, crystal oscillator XT1, diode D1, resistance R1, pulse potential device, capacitor
C1, capacitor C2, capacitor C3, capacitor C4.
Capacitor C1, resistance R1, capacitor C2 form π type filter circuit；The input of π type filter circuit is connected to diode D1 yin
Pole, output are connected to DC/DC voltage-stablizer input terminal；Diode D1 anode is connected to full-wave rectification end；Three terminal regulator input terminal
It is connected to DC/DC output end of voltage stabilizer, output end is single fire line control power supply；Capacitor C3 is that the output of DC/DC voltage-stablizer filters
Capacitor, capacitor C4 are the output filter capacitor of three terminal regulator.Single fire line control power supply is used to power to wall control single-chip microcontroller U3.
The common end of pulse potential device is connected to publicly, and pulse output end exports brightness Setting signal；Wall control single-chip microcontroller
Brightness Setting signal input terminal be connected to the pulse output end of pulse potential device WP；The phase shift sampling pulse of wall control single-chip microcontroller is defeated
Enter end and is connected to phase shift sampling pulse output end；The trigger signal output end of wall control single-chip microcontroller is connected to trigger signal input terminal.
Brightness wall control unit sends brightness control letter by controlling the phase shifting angle of single fire wire output end output voltage waveforms
Number, brightness control signal shares brightness 1-N, altogether N number of brightness degree；N is the integer more than or equal to 2, representative value 8；
Send the method for brightness control signal by wall control chip microcontroller, specifically:
Step A sets the brightness degree of brightness control signal as brightness 1；
Step B issues a brightness control signal；
Step C, judges whether brightness changes, and brightness changes, return step B；No change has taken place for brightness, maintains not
Issue brightness control signal state, return step C.
The maintenance does not issue brightness control signal state, and it is all α's that single fire wire output end, which exports positive and negative half-wave phase shifting angle,
Single-phase half-sinusoid.Brightness control signal of the sending, single continuous K half-wave output phase shifting angle of fire wire output end is all β
Single-phase half-sinusoid, the brightness degree of the brightness control signal of sending is brightness K；K be more than or equal to 1, it is whole less than or equal to N
Number.
The brightness control signal is received by brightness regulation driving unit and is controlled LED light brightness.The brightness
It adjusts driving unit and is equipped with firewire input terminal, zero curve input terminal, wherein the firewire input terminal is connected to brightness wall control unit
Single fire wire output end, the zero curve input terminal are connected to AC power source zero curve.The AC power source is single-phase 220V alternating current.
The brightness regulation driving unit is driven by single-phase rectifier power module of voltage regulation, luminance signal receiving module, brightness
Module composition.
The single-phase rectifier power module of voltage regulation is made of single-phase transformer, single-phase rectifier bridge circuit, filter regulator circuit；
Single-phase transformer input terminal is connected to firewire input terminal, zero curve input terminal；Single-phase transformer output end is connected to single-phase rectification bridge
Circuit AC input terminal；Single-phase rectification bridge circuit rectifies output plus terminal is DC supply, negative terminal is with reference to ground；Filtering voltage regulation
Circuit input end is connected to DC supply；The output of filter regulator circuit output end adjusts DC power supply and receives to luminance signal
Module for power supply.
The luminance signal receiving module is made of adjusting single-chip minimum system, luminance signal sampling shaping circuit.
The adjusting single-chip minimum system is equipped with pulse capture input terminal and pwm pulse output end.
The luminance signal sampling shaping circuit is made of full-wave rectifying circuit, voltage-stabiliser tube amplitude limiter circuit；Full-wave rectification electricity
Road input terminal is connected to single-phase transformer output end；Voltage-stabiliser tube amplitude limiter circuit input terminal be connected to full-wave rectifying circuit output end,
Output end is connected to the pulse capture input terminal for adjusting single-chip minimum system.
The LED drive module is equipped with direct-flow input end, LED light drives end, PWM brightness regulated signal input terminal；LED drives
The direct-flow input end of dynamic model block is connected to DC supply, and PWM brightness regulated signal input terminal, which is connected to, adjusts single-chip microcontroller most
The pwm pulse output end of mini system, LED light driving end are connected to LED light.
The brightness regulation driving unit receives brightness control signal by luminance signal receiving module and to adjust LED light bright
Degree, method is:
Step 1 sets the brightness degree of brightness control signal as brightness 1；
Step 2 adjusts LED luminance；
Step 3 judges whether there is brightness control signal on single firewire；There is no brightness control signal, return step three；There is brightness
Signal is controlled, step 4 is gone to；
Step 4 receives brightness control signal, determines brightness degree；
Step 5, return step two.
Described to judge whether there is brightness control signal on single firewire, method is to judge whether firewire input terminal has the phase shifting angle to be
The single-phase half-sinusoid of β；The reception brightness control signal, determines brightness degree, and method is to judge continuous phase shifting angle for β
The number of single-phase half-sinusoid, having continuous K phase shifting angle is the single-phase half-sinusoid of β, and the brightness degree of brightness control signal is
Brightness K.
A kind of phase shifting angle control is carried out using the circuit that is connected on single firewire the invention has the advantages that providing
Method and be connected on single firewire, can generate and issue by give phase shifting angle waveform form brightness degree brightness control letter
Number brightness wall control unit physical circuit.LED light brightness is controlled using single firewire mode, is not necessarily to remote controler, is not necessarily to control line,
Without laying power supply line again, the substitution upgrading of general lighting lamp may be implemented；LED light brightness, which can according to need, to be divided into arbitrarily
A grade；Brightness control signal is only sent when changing brightness using low-angle phase shift system, and continuous output phase is the same as phase shifting angle
Half-wave quantity is the brightness degree of brightness control signal, and the time is short, not will cause LED light flashing.
Detailed description of the invention
Fig. 1 is single firewire light adjusting circuit example structure block diagram.
Fig. 2 is brightness wall control unit embodiment circuit diagram.
Fig. 3 is waveform example when the maintenance of brightness wall control unit does not send brightness control signal state.
Fig. 4 is waveform example when brightness wall control unit sends brightness control signal.
Fig. 5 is to send brightness control signal flow chart.
Fig. 6 is brightness control signal sending control method.
Fig. 7 is brightness regulation structure of driving unit figure.
Fig. 8 is brightness regulation drive unit embodiment.
Fig. 9 is brightness control signal method of reseptance.
Specific embodiment
The present invention is described in further detail below by attached drawing and in conjunction with the embodiments, but embodiments of the present invention
It is without being limited thereto.
The single firewire light adjusting circuit example structure being composed in series by brightness wall control unit and brightness regulation driving unit is such as
Shown in Fig. 1, brightness wall control unit list firewire L is into single firewire L1 goes out；Brightness regulation driving unit firewire L1 is into zero curve N goes out.
Brightness wall control unit embodiment circuit is as shown in Fig. 2, steady by unidirectional thyristor V01, DC/DC voltage-stablizer U1, three ends
Depressor U2, wall control single-chip microcontroller U3, crystal oscillator XT1, triode V1, diode D01, diode D02, diode D03, two poles
Pipe D04, diode D1, voltage-stabiliser tube DW01, voltage-stabiliser tube DW1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance
R01, resistance R02, pulse potential device WP, capacitor C1, capacitor C2, capacitor C3, capacitor C4 composition, wherein unidirectional thyristor, two poles
Pipe D01, diode D02, diode D03, diode D04, triode, resistance R2, resistance R3, resistance R4, resistance R5, resistance
R01, resistance R02, voltage-stabiliser tube DW01, voltage-stabiliser tube DW1 composition realize the circuit that the method for phase shifting angle control is carried out on single firewire.
Diode D01, diode D02, diode D03, diode D04 form single phase bridge type rectifier circu, 2 exchanges
Input terminal is respectively single firewire input terminal L, single fire wire output end L1.The rectification output plus terminal of single phase bridge type rectifier circu is all-wave
Rectifier terminal A, rectification output negative terminal is publicly.
Anode, the cathode of unidirectional thyristor V01 is respectively connected to full-wave rectification end A, publicly, triode V1 collector string
It is connected to voltage-stabiliser tube DW1 anode after connection resistance R2, voltage-stabiliser tube DW1 cathode is connected to full-wave rectification end A；Triode V1 emitter warp
Resistance R3 is connected to publicly；Triode V1 base stage is respectively connected to one end of resistance R4, resistance R5；The other end of resistance R4
It is connected to publicly；Triode V1 transmitting extremely trigger pulse output end, is connected to unidirectional thyristor V01 control electrode；Resistance R5
Other end be trigger signal input terminal.
After resistance R01 is coupled with resistance R02, the other end of resistance R01 is connected to full-wave rectification end A, resistance R02
Other end be connected to publicly, voltage-stabiliser tube DW01 is connected in parallel on the both ends resistance R02.Resistance R01, resistance R02 series connection tie-point
For phase shift sampling pulse output end, voltage-stabiliser tube DW01 carries out clipping to phase shift sampling pulse.
Capacitor C1, resistance R1, capacitor C2 form π type filter circuit；The input of π type filter circuit is connected to diode D1 yin
Pole, output are connected to DC/DC voltage-stablizer U1 input terminal；Diode D1 anode is connected to full-wave rectification end A；Three terminal regulator U2 is defeated
Enter end and is connected to DC/DC voltage-stablizer U1 output end, output end as single fire line control power vd D；Capacitor C3 is DC/DC voltage-stablizer U1
Output filter capacitor, capacitor C4 be three terminal regulator U2 output filter capacitor.
The model of DC/DC voltage-stablizer U1 be DY10, three terminal regulator U2 model be HT7133.
HT7133 output+3.3V voltage.If the output voltage of DC/DC voltage-stablizer U1 meets the power supply of wall control single-chip microcontroller U3
It is required that three terminal regulator U2 can be omitted.DC/DC voltage-stablizer U1 is also an option that other voltage input characteristics with wide scope
DC/DC voltage-stablizer.
The common end COM of pulse potential device WP is connected to publicly, for exporting brightness Setting signal.Pulse potential device WP
When rotation, the brightness Setting signal of pulse output end SL, pulse output end SR output is 90 ° of phase phase difference of pulse.
Wall control single-chip microcontroller U3, crystal oscillator XT1 form single-chip minimum system.In Fig. 2 embodiment, wall control single-chip microcontroller U3
P2.0, P2.1 be brightness Setting signal input terminal, be respectively connected to pulse potential device WP pulse output end SL, pulse output
Hold SR；P2.2 is phase shift sampling pulse input terminal, is connected to phase shift sampling pulse output end, i.e. resistance R01, resistance R02 series connection
Tie-point；P1.1 is trigger signal output end, the trigger signal input terminal being connected on resistance R5.The model of wall control single-chip microcontroller U3
It is MSP430G2553.
Brightness wall control unit sends brightness control by controlling the phase shifting angle of single fire wire output end L1 output voltage waveforms
Signal.In brightness control signal, brightness degree is indicated with the quantity of the continuous single-phase half-sinusoid with specific phase shifting angle；It is bright
Degree control signal shares brightness 1-N, altogether N number of brightness；N is the integer more than or equal to 2, representative value 8.
Brightness control signal is only in the case where rotary pulsed potentiometer WP has brightness Setting signal just by brightness wall control
Unit control is sent.When the maintenance of brightness wall control unit does not send brightness control signal state, uninterrupted triggering mode is taken, is touched
It signals to maintain effectively always, i.e. wall control single-chip microcontroller U3 continuously sends out continual trigger signal, each key of brightness wall control unit
Point waveform is as shown in Figure 3.
When AC power source zero passage, unidirectional thyristor V01 shutdown.After AC power source zero passage, although wall control single-chip microcontroller U3 continues
Continual trigger signal is issued, maintenance trigger signal is high level state, but only when the voltage of full-wave rectification end A is greater than surely
The pressure stabilizing value of pressure pipe DW1, triode V1 are just connected, and unidirectional thyristor V01 can just be triggered conducting.As can be seen from Figure 2, continual
When trigger signal is effective, it is desirable that control triode V1 conducting, therefore it is high level that this, which continuously sends out continual trigger signal,.Cause
This, shown in alternating voltage waveform such as Fig. 3 (a) of single fire wire output end L1, each half-wave is triggered at a phase shifting angle α and is led
It is logical.Shown in voltage waveform such as Fig. 3 (b) of full-wave rectification end A.The voltage waveform of full-wave rectification end A is narrow voltage pulse, pulse
Amplitude is determined that effect is to provide ON state supply voltage for DC/DC voltage-stablizer U1 by the pressure stabilizing value of voltage-stabiliser tube DW1.Due to DC/DC
For voltage-stablizer DY10 in 12V DC voltage input, output voltage still can be in 5.8V or more, and the pressure stabilizing value of voltage-stabiliser tube DW1 is greater than 12V
?.When the pressure stabilizing value of voltage-stabiliser tube DW1 takes 20V, phase shifting angle α=4 °.
Waveform example is as shown in Figure 4 when brightness wall control unit sends brightness control signal.What Fig. 4 was sent is the bright of brightness 3
Degree control signal.
Wall control single-chip microcontroller U3 issues the process of a brightness control signal as shown in figure 5, steps are as follows:
Step 1, stop issuing trigger signal；
Step 2, it waits and receives phase shift sampling pulse；
Step 3, trigger signal is issued, phase shift sampling pulse is waited to disappear；
Step 4, if brightness control signal is not sent complete, step 1 is gone to；Otherwise the transmission for terminating brightness control signal, into dimension
It holds and does not send brightness control signal state.
After wall control single-chip microcontroller U3 stops issuing trigger signal, next AC power source zero crossing, unidirectional thyristor V01 is closed
It is disconnected；Making trigger signal output before AC power source zero crossing is low level, then in AC power source zero crossing unidirectional thyristor V01
Shutdown；After zero passage, even if reaching at phase shifting angle α, because unidirectional thyristor V01 is still off, full-wave rectification without trigger signal
The voltage of end A persistently rises.The intrinsic standoff ratio for reasonably selecting resistance R01, resistance R02, when making to reach at phase shifting angle β, full-wave rectification
The phase shift sampling pulse that the voltage of end A rises to after making partial pressure becomes high level from low level.Wall control single-chip microcontroller U3 receives height
After the phase shift sample-pulse signal of level, trigger signal output end is enabled to export high level, issues trigger signal, unidirectional thyristor
V01 conducting, phase shift sampling pulse disappear, and become low level.If brightness control signal is brightness K, process K just now is repeated
Secondary, brightness control signal is sent completely.Phase shifting angle β representative value is 30 °, if the high-level threshold of phase shift sampling pulse is 1.5V,
Then resistance R01 value is 100 times of resistance R02.Issue a brightness control signal, single continuous K half-wave of fire wire output end L1
Output phase shifting angle is all the single-phase half-sinusoid of β, and the brightness control signal of sending is brightness K；K is more than or equal to 1, is less than or equal to
The integer of N.Phase shifting angle β is greater than phase shifting angle α.
The brightness control signal sent shown in Fig. 4 is brightness 3, and Fig. 4 (a) is the friendship of single fire wire output end L1 in transmission process
Galvanic electricity corrugating, Fig. 4 (b) are the voltage waveform of full-wave rectification end A in transmission process.Fig. 4 (c) is phase shift sampling in transmission process
The pulse schematic diagram of pulse, when drawing Fig. 4 (c), idealization processing has all been done in pulse 1, pulse 2, pulse 3, i.e., signal is lower than height
Make low level processing when level threshold, makees high level processing when higher than high-level threshold.
The method that brightness wall control unit sends brightness control signal is as shown in Figure 6, comprising:
Step A sets the brightness degree of brightness control signal as brightness 1；
Step B issues a brightness control signal；
Step C, judges whether brightness changes, and brightness changes, return step B；No change has taken place for brightness, maintains not
Issue brightness control signal state, return step C.
The structure of brightness regulation driving unit is as shown in fig. 7, receive mould by single-phase rectifier power module of voltage regulation, luminance signal
Block, brightness drive module composition.
Single-phase rectifier power module of voltage regulation is made of single-phase transformer, single-phase rectifier bridge circuit, filter regulator circuit；It is single-phase
Transformer inputs are connected to firewire input terminal L1, zero curve input terminal N；Single-phase transformer output end is connected to single-phase rectification bridge electricity
Road ac input end；Single-phase rectification bridge circuit rectifies output plus terminal is DC supply, negative terminal is with reference to ground；Filtering voltage regulation electricity
Road input terminal is connected to DC supply；Filter regulator circuit output adjusts DC power supply, supplies to luminance signal receiving module
Electricity.
Luminance signal receiving module is made of adjusting single-chip minimum system, luminance signal sampling shaping circuit, is adjusted single
Piece machine minimum system is equipped with pulse capture input terminal and pwm pulse output end.
Luminance signal sampling shaping circuit is made of full-wave rectifying circuit, voltage-stabiliser tube amplitude limiter circuit；Full-wave rectifying circuit is defeated
Enter end and is connected to single-phase transformer output end.Voltage-stabiliser tube amplitude limiter circuit input terminal is connected to full-wave rectifying circuit output end, output
End is connected to the pulse capture input terminal of single-chip minimum system.
LED drive module is equipped with direct-flow input end, LED light drives end, PWM brightness regulated signal input terminal.LED drives mould
The direct-flow input end of block is connected to DC supply, and PWM brightness regulated signal input terminal is connected to the PWM arteries and veins for adjusting single-chip microcontroller
Output end is rushed, LED light driving end is connected to LED light.
Brightness regulation drive unit embodiment is as shown in Figure 8.
In embodiment illustrated in fig. 8, single-phase rectifier power module of voltage regulation is by single-phase transformer TC, diode D05, diode
D06, diode D07, diode D08, capacitor C5, resistance R03, voltage-stabiliser tube DW02 composition.Wherein, diode D05, diode
D06, diode D07, diode D08 form single-phase rectifier bridge circuit, and capacitor C5, resistance R03, voltage-stabiliser tube DW02 composition filtering are steady
Volt circuit.Capacitor C5 obtains DC supply VIN to single-phase rectification bridge output filtering, and output adjusts direct current on voltage-stabiliser tube DW02
Power supply VCC.
In embodiment illustrated in fig. 8, luminance signal receiving module is by adjusting single-chip microcontroller U4, crystal oscillator XT2, diode
D09, diode D10, resistance R6, resistance R7, voltage-stabiliser tube DW2 composition.Wherein, single-chip microcontroller U4, crystal oscillator XT2 composition are adjusted
Single-chip minimum system, the P2.0 for adjusting single-chip microcontroller U4 is pulse capture input terminal, and P1.2 is pwm pulse output end.Diode
D09, diode D10 form full-wave rectifying circuit, diode D09, diode D10 anode to be respectively connected to single-phase transformer defeated
Outlet L2, N2, it is full-wave rectifying circuit output end that cathode, which is coupled,.Resistance R6, resistance R7, voltage-stabiliser tube DW2 form voltage-stabiliser tube clipping
Circuit.One end of resistance R6 is coupled for voltage-stabiliser tube amplitude limiter circuit output end with voltage-stabiliser tube DW2 cathode and is connected to adjusting single-chip microcontroller
The pulse capture input terminal of U4.The other end of resistance R6 is voltage-stabiliser tube amplitude limiter circuit input terminal and is connected to full-wave rectifying circuit
Output end.Voltage-stabiliser tube DW2 anode is connected to reference to ground, and resistance R7 is connected in parallel on the both ends of voltage-stabiliser tube DW2.
The model for adjusting single-chip microcontroller U4 is MSP430G2553.Wall control single-chip microcontroller U3, adjusting single-chip microcontroller U4 are also an option that it
The low-power scm of his MSP430 series.
In embodiment illustrated in fig. 8, brightness drive module by LED constant-current driver U5, inductance LG, resistance R8, restore two fastly
Pole pipe D2 composition, the model PT4115 of LED constant-current driver.The both ends of resistance R8 are respectively connected to LED constant-current driver U5
Power voltage terminal VIN, output electric current induction end SEN；Fast recovery diode D2 cathode is connected to the electricity of LED constant-current driver U5
Source voltage end VIN, anode are connected to the output switching terminal SW of LED constant-current driver U5；One end of inductance LG is connected to LED constant current
The output switching terminal SW of driver U5；The output electric current induction end SEN and inductance LG other end of LED constant-current driver U5 be
LED light drives end；The power voltage terminal VIN of LED constant-current driver U5 is the direct-flow input end of LED drive module；LED constant current is driven
The brightness adjustment control end DIM of dynamic device U5 is PWM brightness regulated signal input terminal.
Fig. 9 is brightness control signal method of reseptance.Brightness regulation driving unit receives brightness by luminance signal receiving module
Signal and adjusting brightness of LED lamps are controlled, method is:
Step 1 sets the brightness degree of brightness control signal as brightness 1；
Step 2 adjusts LED luminance；
Step 3 judges whether there is brightness control signal on single firewire；There is no brightness control signal, return step three；There is brightness
Signal is controlled, step 4 is gone to；
Step 4 receives brightness control signal；
Step 5, return step two.
Judge whether there is brightness control signal on single firewire, method is that judge whether firewire input terminal L1 has phase shifting angle be β
Single-phase half-sinusoid；Brightness control signal is received, method is for judging continuous phase shifting angle for the single-phase half-sinusoid of β
Number, having continuous K phase shifting angle is the single-phase half-sinusoid of β, and brightness control signal is brightness K.Luminance signal sampling shaping circuit
Alternating voltage on firewire input terminal L1 is converted into rectangular wave, as shown in Fig. 4 (d).Phase shifting angle α, phase shifting angle β and Fig. 4 (d) institute
The negative pulse shown is corresponding, wherein phase shifting angle α respective pulses 4, pulse 8, pulse 9, is the negative pulse of narrower width；β pairs of phase shifting angle
Pulse 5, pulse 6, pulse 7 are answered, is the negative pulse of wider width.Luminance signal receiving module, which only needs to differentiate, to be sent to adjusting monolithic
The width of machine minimum system pulse capture input terminal negative pulse, that is, can determine whether firewire input terminal L1 has phase shifting angle is the list of β
Phase half-sinusoid；Calculate the quantity for the single-phase half-sinusoid that phase shifting angle is β, available brightness control signal.
In Fig. 4, wall control single-chip microcontroller U3 the 1st time stop issue trigger signal at the time of AC power source positive half-wave, therefore,
Upper 1st phase shifting angle of firewire input terminal L1 is that the single-phase half-sinusoid of β is negative half-wave.Due to wall control single-chip microcontroller U3 the 1st time stopping
It is random at the time of issuing trigger signal, so, the 1st stopping may also be in AC power source at the time of issuing trigger signal
Negative half-wave, at this point, the single-phase half-sinusoid that upper 1st phase shifting angle of firewire input terminal L1 is β becomes positive half-wave.Due to luminance signal
Sampling shaping circuit first rectifies the alternating voltage on firewire input terminal L1, is reconverted into rectangular wave, therefore, the 1st phase shifting angle
Single-phase half-sinusoid for β is positive half-wave or negative half-wave, does not influence brightness regulation driving unit and sentences to brightness control signal
Disconnected and reception.
Claims (10)
1. carrying out the method for phase shifting angle control on a kind of list firewire, it is characterised in that:
By including unidirectional thyristor, diode D01, diode D02, diode D03, diode D04, triode, resistance R2, electricity
Hinder the circuit realization of R3, resistance R4, resistance R5, resistance R01, resistance R02, voltage-stabiliser tube DW01, voltage-stabiliser tube DW1；
Diode D01, diode D02, diode D03, diode D04 form single phase bridge type rectifier circu, 2 exchange inputs
End is respectively single firewire input terminal, single fire wire output end；The rectification output plus terminal of single phase bridge type rectifier circu is full-wave rectification end,
Rectification output negative terminal is publicly；
Anode, the cathode of unidirectional thyristor are respectively connected to full-wave rectification end, publicly, after transistor collector series resistance R2
It is connected to voltage-stabiliser tube DW1 anode, voltage-stabiliser tube DW1 cathode is connected to full-wave rectification end；Transistor emitter is connected to through resistance R3
Publicly；Transistor base is respectively connected to one end of resistance R4, resistance R5；The other end of resistance R4 is connected to publicly；
Transistor emitter is connected to unidirectional thyristor control electrode；The other end of resistance R5 is trigger signal input terminal；
After resistance R01 is coupled with resistance R02, the other end of resistance R01 is connected to full-wave rectification end, and resistance R02's is another
Outer one end is connected to publicly, and voltage-stabiliser tube DW01 is connected in parallel on the both ends resistance R02；Resistance R01 is with the tie-point of connecting of resistance R02
Phase shift sampling pulse output end.
2. carrying out the method for phase shifting angle control on list firewire according to claim 1, it is characterised in that:
The effective trigger signal of high level is maintained in trigger signal input terminal, single fire wire output end exports positive and negative half-wave phase shifting angle all
For the single-phase half-sinusoid of α；The size of phase shifting angle α is controlled by the pressure stabilizing value of voltage-stabiliser tube DW1.
3. carrying out the method for phase shifting angle control on list firewire according to claim 2, it is characterised in that:
The method that phase shifting angle control is β is, before AC power source zero passage, stops issuing trigger signal, unidirectional thyristor is in alternating current
It is turned off after the zero passage of source；It reaches at phase shifting angle β, when phase shift sampling pulse output end becomes high level from low level, issues triggering letter
Number, unidirectional thyristor is connected.
4. carrying out the method for phase shifting angle control on list firewire according to claim 3, it is characterised in that:
The size of phase shifting angle β is controlled by the intrinsic standoff ratio of resistance R01, resistance R02；The phase shifting angle β is greater than phase shifting angle α.
5. carrying out the method for phase shifting angle control on list firewire according to claim 4, it is characterised in that:
The brightness control signal of control LED light is sent for brightness wall control unit；Brightness wall control unit includes the single fire of the realization
The circuit that the method for phase shifting angle control is carried out on line further includes DC/DC voltage-stablizer, three terminal regulator, wall control single-chip microcontroller, crystal vibration
Swing device XT1, diode D1, resistance R1, pulse potential device, capacitor C1, capacitor C2, capacitor C3, capacitor C4；
Capacitor C1, resistance R1, capacitor C2 form π type filter circuit；The input of π type filter circuit be connected to diode D1 cathode,
Output is connected to DC/DC voltage-stablizer input terminal；Diode D1 anode is connected to full-wave rectification end；The connection of three terminal regulator input terminal
It is single fire line control power supply to DC/DC output end of voltage stabilizer, output end；Capacitor C3 is the output filter capacitor of DC/DC voltage-stablizer,
Capacitor C4 is the output filter capacitor of three terminal regulator；
The common end of pulse potential device is connected to publicly, and pulse output end exports brightness Setting signal；
The brightness Setting signal input terminal of wall control single-chip microcontroller is connected to the pulse output end of pulse potential device WP, phase shift sampling pulse
Input terminal is connected to phase shift sampling pulse output end, and trigger signal output end is connected to trigger signal input terminal.
6. carrying out the method for phase shifting angle control on list firewire according to claim 5, it is characterised in that:
Brightness wall control unit sends brightness control signal by controlling the phase shifting angle of single fire wire output end output voltage waveforms, bright
Degree control signal shares brightness 1-N, altogether N number of brightness degree；N is the integer more than or equal to 2；
Send the method for brightness control signal by wall control chip microcontroller, specifically:
Step A sets the brightness degree of brightness control signal as brightness 1；
Step B issues a brightness control signal；
Step C, judges whether brightness changes, and brightness changes, return step B；No change has taken place for brightness, maintains not
Issue brightness control signal state, return step C.
7. carrying out the method for phase shifting angle control on list firewire according to claim 6, it is characterised in that:
The maintenance does not issue brightness control signal state, and it is all the single-phase of α that single fire wire output end, which exports positive and negative half-wave phase shifting angle,
Half-sinusoid.
8. carrying out the method for phase shifting angle control on list firewire according to claim 6, it is characterised in that:
Brightness control signal of the sending, single continuous K half-wave output phase shifting angle of fire wire output end are all the single-phase sine of β
Half-wave, the brightness degree of the brightness control signal of sending are brightness K；K is more than or equal to the 1, integer less than or equal to N.
9. carrying out the method for phase shifting angle control on single firewire according to any one of claim 4-9, it is characterised in that: institute
State phase shifting angle α=4 °, phase shifting angle β=30 °.
10. carrying out the method for phase shifting angle control on list firewire a method according to any one of claims 6-8, it is characterised in that:
The N=8.
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| CN201510229502.6A CN104837257A (en) | 2015-05-08 | 2015-05-08 | Wall-controlled dimming method for LED lamp |
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| CN201710790580.2A Active CN107396503B (en) | 2015-05-08 | 2015-05-08 | Method for sending LED lamp brightness control signal through single live wire |
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| CN107396503B (en) | 2020-06-09 |
| CN104837257A (en) | 2015-08-12 |
| CN109195257B (en) | 2020-09-04 |
| CN109195257A (en) | 2019-01-11 |
| CN107396503A (en) | 2017-11-24 |
| CN109195256B (en) | 2020-09-04 |
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