CN105338687B - intelligent switch panel for LED lamp - Google Patents
intelligent switch panel for LED lamp Download PDFInfo
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- CN105338687B CN105338687B CN201410390915.8A CN201410390915A CN105338687B CN 105338687 B CN105338687 B CN 105338687B CN 201410390915 A CN201410390915 A CN 201410390915A CN 105338687 B CN105338687 B CN 105338687B
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The present invention discloses a kind of intelligent switch panel for LED lamp, including current detection circuit, silicon-controlled, control module, dynamic maintain current circuit, zero cross detection circuit and environmental light brightness induction module；Central processing module for controlling capacitance touching control screen assembly is electrically connected with control module, and environmental light brightness induction module is connected to central processing module；Current detection circuit, silicon-controlled is in series between LED hot terminals and alternating current hot terminal；Zero curve connecting terminal, LED hot terminal are parallel with scr promoter current circuit, dynamic current holding circuit, and according to the whether enabled dynamic current holding circuit of sensed current signal dynamic adjustment from current detection circuit.The invention avoids the electric currents through control module can flow through LED lamp, solves the LED lamp controlled originally and the phenomenon that flickering or can not closing occurs；And make the silicon-controlled situation born excessively high inverse electromotive force and be surprisingly connected when solving current switching.
Description
Technical field
The present invention relates to power switch technical fields, and in particular to a kind of intelligent switch panel for LED lamp.
Background technology
LED lamps and lanterns because have many advantages, such as small power consumption, it is energy saving, can antidetonation, be widely applied, the control of LED lamps is opened
It closes and soft-touch control has also been developed to by traditional button, but existing LED lamps soft-touch control, opening for LED lamps can only be controlled
With pass, illumination is considered only, the brightness of LED lamps can not be adjusted by switching, the use need of more people cannot be met
It asks；Such as cannot according to season, illuminance change setting LED lamps brightness.
But existing touch control type switch panel, on the one hand, LED lamps and lanterns cannot well adapt to traditional thyristor regulating
Light device, because majority LED lamps and lanterns are built-in with Switching Power Supply and thus Switching Power Supply drives, and the electricity of Switching Power Supply at work
Stream is usually discontinuous, i.e., up to a hundred times to thousands of times electric current non-continuous events is had in alternating current a cycle, even if electric current
Continuously, at electric current the lowest point, size of current is often not enough to maintain the maintenance electric current of silicon-controlled normally, when LED lamps and lanterns work(
It is especially apparent when rate is smaller or when great power LED lamps and lanterns are turned down electric current by controllable silicon light modulation, it is silicon-controlled due to flowing through
Electric current is silicon-controlled when being less than the electric current for making it maintain conducting to be accidental switched off, and only waiting next times could be led again when being triggered
It is logical, when electric current is too small even less than so that the silicon-controlled conducting that is triggered, there have been LED light brightness exceptions to show with what is flickered
As；On the other hand, also have digital dimming switch at present, existing this dimmer switch by machine controllable silicon, and completely
Current supply circuit even is formed with lamp string, in order to make lamp smoothly switch and dim, so microcontroller must keep normal power supply, and is flowed
Electric current through control circuit can flow through light bulb, and tens milliamperes of electric current is insufficient to allow traditional incandescent lamp to light, but come to LED light
Saying may be lit, so the LED lamps and lanterns controlled originally is caused to occur flickering or can not close.Therefore, how to design
One kind can realize that the power switch of LED lamp light modulation and flicker becomes the direction that those skilled in the art make great efforts.
Invention content
It is an object of the present invention to provide a kind of intelligent switch panels for LED lamp, this is used for the intelligent switch of LED lamp
Panel makes the silicon-controlled situation born excessively high inverse electromotive force and be surprisingly connected when solving current switching, and avoids through control
The electric current of molding block can flow through LED lamp, solve that flickering occur in the LED lamps and lanterns that are controlled originally or what can not be closed shows
As.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of intelligent switch panel for LED lamp,
Including zero curve connecting terminal, LED hot terminals and alternating current hot terminal, LED hot terminals is for connecting
LED lamp is connect, alternating current hot terminal further includes for connecting alternating current firewire：Current detection circuit, silicon-controlled, control
Molding block, zero cross detection circuit, environmental light brightness induction
Module；One capacitance touching control screen assembly, the central processing module for controlling capacitance touching control screen assembly and control
Module is electrically connected, and the environmental light brightness induction module is connected to central processing module；
The zero cross detection circuit input terminal is connected to the firewire and zero curve of alternating current, and the output end of this zero cross detection circuit connects
It is connected to control module, for detecting zero information in mains AC, to generate alternating current zero cross signal；
Current detection circuit, silicon-controlled, electricity are in series between LED hot terminals and alternating current hot terminal
Current detection circuit is silicon-controlled to be flowed into for controlling for detecting real-time current size in alternating current firewire and generating sensed current signal
The starting current break-make of load；
The zero curve connecting terminal, LED hot terminal are parallel with scr promoter current circuit, dynamic current maintains
Circuit；
The scr promoter current circuit includes concatenated resistance R20 and capacitance C7, and capacitance C7 absorbs LED lamp 14 and opens
Inverse electromotive force during pass, while making to silicon-controlled conducting moment offer starting current can in the case where trigger signal drives
Control silicon conducting；
It is described it is silicon-controlled silicon controlled control circuit is provided between control module, this silicon controlled control circuit is used for can
It controls silicon and trigger pulse electric current is provided；
It is provided with optocoupler between the dynamic current holding circuit and control module and transmits control circuit, this optocoupler transmits control
Circuit processed determines the need for enabled dynamic current holding circuit according to operating current size；
The control module generates trigger pulse electric current according to alternating current zero cross signal to control silicon controlled control circuit, and
According to the whether enabled dynamic current holding circuit of sensed current signal dynamic adjustment from current detection circuit；
Light luminance contains environmental light brightness information to generate in the environmental light brightness induction module induced environment
Brightness signal, brightness signal is transferred to control module by the central processing module, and then adjusts trigger pulse electric current
Delay is to realize the control to thyristor operating angle.
Further improved scheme is as follows in above-mentioned technical proposal：
1. in said program, the dynamic current holding circuit, the starting current for maintaining controlled silicon conducting, packet
Include reduction voltage circuit, electric bridge J3, Hall current sensing device U12, full-wave rectification amplifying circuit, 1.25V centered on amplifier U11
On the basis of source of stable pressure D3, NMOS device U7 and capacitance C8, the reduction voltage circuit for providing constant low-voltage be located at electric bridge
Between source of stable pressure D3, NMOS device U7 on the basis of J3 and 1.25V, the one end NMOS device U7 is connected by resistance R36 and electric bridge J3
It is connected to silicon-controlled, for the NMOS device U7 other ends by resistance eutral grounding, the source of stable pressure D3 on the basis of the 1.25V is located at NMOS device
Between the grid and ground connection of U7, the capacitance C8 is located between the gate pole of NMOS device U7 and the source of stable pressure D3 on the basis of 1.25V,
The electric current for flowing through the source of stable pressure D3 on the basis of 1.25V is I, when I is more than setting electric current, source of stable pressure D3's on the basis of 1.25V
Reference input terminal voltage increases, and causes the source of stable pressure D3 negative and positive electrode impedances on the basis of 1.25V to be lower, the gate pole of NMOS device U7
Voltage also accordingly reduces, thus I just reduces, to the constant current value in setting.
2. in said program, a switching power circuit input terminal is connected to the firewire and zero curve of alternating current, for handing over alternating current
Galvanic electricity is converted into DC low-voltage electricity and provides electric energy to control module, active rectification amplifying circuit, silicon controlled control circuit, described
Switching power circuit output end is in series with overvoltage crowbar.
3. further including humiture induction module in said program, for temperature, humidity in induced environment, and temperature will be contained
The signal transmission of humidity information is shown to central processing module, and by capacitance touching control screen assembly.
4. in said program, the silicon controlled control circuit includes triode T3, the silicon-controlled U1 of optocoupler, resistance R41, three
Pole pipe T3 and resistance R41 connects and is located between voltage end and ground connection, and the input terminal of the resistance R41 and silicon-controlled U1 of optocoupler is simultaneously
Connection, the base stage of triode T3 are connected to control module, and 2 output ends of the silicon-controlled U1 of optocoupler are connected respectively to silicon-controlled gate pole
And input terminal.
5. in said program, the current detection circuit is using Hall current sensing device U3, the active rectification amplification
Circuit includes operational amplifier U4, PMOS device U9, triode T2, and the operational amplifier U4 and PMOS device U are arranged in series
And be respectively positioned between current detection circuit and control module, the collector and emitter of triode T2 is located at the grid of PMOS device U9
Between pole and ground connection, and the base stage of triode T2 is connected to control module, for receive for amplification and it is normal between switch
Amplification selection signal.
6. in said program, it includes PMOS device U6, optocoupler U10, this PMOS device U6 that the optocoupler, which transmits control circuit,
It is connected with the source of stable pressure D3 on the basis of 1.25V by resistance, the output end of this optocoupler U10 is connected to the gate pole of PMOS device U6,
The input terminal of optocoupler U10 is connected to control module.
7. further including humiture induction module in said program, for temperature, humidity in induced environment, and temperature will be contained
The signal transmission of humidity information is shown to central processing module, and by capacitance touching control screen assembly.
Further include camera, WIFI module, microphone and loudspeaker module 8. in said program, the WIFI module,
Microphone and loudspeaker module are connected to central processing module.
9. in said program, the light modulation key is used to control the delay of trigger pulse electric current and is led to silicon-controlled to realize
The control of current flow angle, the on ＆ off switch, close key are generated and are closed for controlling trigger pulse electric current.
Since above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art：
1. the present invention is used for the intelligent switch panel of LED lamp, which solve light high-power LED lamp（Such as 500W and
More than）When, since high-power LED lamp induction reactance is excessive, LED light is mostly Switching Power Supply driving, and the electric current when power is larger is cut
Make the silicon-controlled situation born excessively high inverse electromotive force and be surprisingly connected when changing, substantially increases in high-power LED lamp
The reliability of application；Next, while compatible low-power LED lamp（Such as 8W or less）And high-power LED lamp（Such as 500W and with
On）, and can in real time measuring electric quantity intelligent controllable silicon dimmer, solve since LED lamp power is smaller and electric current discontinuously makes
It is silicon-controlled accidental switch off cause flicker the phenomenon that, it is inclined to improve electrical measurement precision caused by differing greatly due to bearing power
Low problem.
2. the present invention is used for the intelligent switch panel of LED lamp, the power branch of LED lamp is used to control and driven
It is separately positioned with power supply branch, ensure the power supplies such as control module simultaneously in LED lamp, avoids the electric current through control module
LED lamp can be flowed through, tens milliamperes of electric current is insufficient to allow traditional incandescent lamp to light, but may be by point for LED light
It is bright, it solves the LED lamps and lanterns controlled originally and the phenomenon that flickering or can not closing occurs；Secondly, current detection circuit and
It is provided with active rectification amplifying circuit between control module, improves electrical measurement caused by differing greatly due to bearing power
The relatively low problem of precision.
3. the present invention is used for the intelligent switch panel of LED lamp, avoids the electric current when current impulse is in the lowest point and be less than
The maintenance electric current of silicon-controlled minimum and cause to accidental switch off, flicker, when bearing power is smaller, load current is less than controllable
Silicon extinction current also results in silicon-controlled accidental switch off；Again, it can not only be given by dynamic current holding circuit silicon-controlled
Extinction current is provided, this circuit can reduce itself current drain automatically when flowing through silicon-controlled electric current and gradually increasing, and reach
To improve system effectiveness effect, equally, when microcontroller 11 in real time collected load current value be always zero reach one timing
After length, control circuit is transmitted by optocoupler and closes dynamic current holding circuit, achievees the effect that improve system effectiveness.
4. the present invention is used for the intelligent switch panel of LED lamp, can be according to illumination intensity in environment, adjust automatically LED
The brightness of lamps and lanterns, both improves comfort, also saves the energy, while can realize amusement and leisure by switch panel, surfs the Internet, letter
Breath display, greatly facilitates the diversified demand of people.
Description of the drawings
Fig. 1 is schematic block circuit diagram of the present invention for the intelligent switch panel of LED lamp；
Fig. 2 is electrical block diagram of the present invention for the intelligent switch panel of LED lamp；
Fig. 3 is the present invention for control module schematic diagram in the intelligent switch panel of LED lamp；
Fig. 4 is the present invention for switching power circuit structural schematic diagram in the intelligent switch panel of LED lamp；
Fig. 5 is the present invention for overvoltage crowbar structural schematic diagram in the intelligent switch panel of LED lamp.
In the figures above：1, switching power circuit；2, overvoltage crowbar；3, zero cross detection circuit；4, current detecting electricity
Road；5, active rectification amplifying circuit；6, silicon-controlled；7, silicon controlled control circuit；8, scr promoter current circuit；9, dynamic electric
Flow holding circuit；10, optocoupler transmits control circuit；11, control module；12, on ＆ off switch；13, key is just dimmed；14, light modulation key is born；
15, capacitance touching control screen assembly；16, central processing module；17, humiture induction module；18, camera；19, WIFI module；
20, microphone and loudspeaker module；21, display screen；22, environmental light brightness induction module.
Specific implementation mode
With reference to embodiment, the invention will be further described：
Embodiment：A kind of intelligent switch panel for LED lamp, including zero curve connecting terminal, LED hot terminal
With alternating current hot terminal, LED hot terminals is used for connecting LED lamp, alternating current hot terminal
In connection alternating current firewire, further include current detection circuit 4, it is silicon-controlled 6,
Control module 11, zero cross detection circuit 3, environmental light brightness induction module 22；One capacitance touching control screen assembly 15 is used
It is electrically connected with control module 11 in the central processing module 16 of control capacitance touching control screen assembly 15, the environmental light brightness induction
Module 22 is connected to central processing module 16；
3 input terminal of the zero cross detection circuit is connected to the firewire and zero curve of alternating current, the output end of this zero cross detection circuit
It is connected to control module 11, for detecting zero information in mains AC, to generate alternating current zero cross signal；
Current detection circuit 4, silicon-controlled 6 are in series between LED hot terminals and alternating current hot terminal,
Current detection circuit 4 is for detecting real-time current size in alternating current firewire and generating sensed current signal, and silicon-controlled 6 for controlling
Flow into the starting current break-make of load；
The zero curve connecting terminal, LED hot terminal are parallel with scr promoter current circuit 8, dynamic current dimension
Hold circuit 9；
The scr promoter current circuit 8 includes concatenated resistance R20 and capacitance C7, and capacitance C7 absorbs LED lamp 14
Inverse electromotive force in switching process, while providing starting current to silicon-controlled 6 conducting moment and to drive in trigger signal
Under it is silicon-controlled 6 conducting；
The dynamic current holding circuit 9, the starting current for maintaining silicon-controlled 6 conducting comprising reduction voltage circuit, electricity
Bridge J3, Hall current sensing device U12, the full-wave rectification amplifying circuit centered on amplifier U11, the voltage stabilizing on the basis of 1.25V
Source D3, NMOS device U7 and capacitance C8, it is base that the reduction voltage circuit for providing constant low-voltage, which is located at electric bridge J3 and 1.25V,
Between accurate source of stable pressure D3, NMOS device U7, the one end NMOS device U7 is connected to silicon-controlled by resistance R36 and electric bridge J3
（6）, the NMOS device U7 other ends are grounded by resistance R23, R26, and the source of stable pressure D3 on the basis of the 1.25V is located at NMOS device
Between the grid and ground connection of U7, the capacitance C8 is located between the gate pole of NMOS device U7 and the source of stable pressure D3 on the basis of 1.25V,
Effect is to delay the switch time of NMOS device U7 that current spike, the full-wave rectification amplifying circuit is avoided to be located at Hall current sense
Between answering the source of stable pressure D3 on the basis of device U12 and 1.25V, flows through the electric current of load while also flowing through Hall current sensing device
The current signal sensed is converted to voltage signal and passes through the full-wave rectification amplifying circuit centered on amplifier U11 by U12, U12
The reference input foot of the source of stable pressure D3 on the basis of 1.25V is output to after amplification and rectification, it is assumed that the voltage converted all is U, then flows
Electric current through NMOS device U7 is by formula：
It obtains, so the electric current for flowing through NMOS device U7 is set by U, when I is more than setting electric current, on the basis of 1.25V
The reference input terminal voltage of source of stable pressure D3 increases, and causes the source of stable pressure D3 negative and positive electrode impedances on the basis of 1.25V to be lower, NMOS devices
The gate voltage of part U7 also accordingly reduces, thus I just reduces, to the constant current value in setting；
It is provided with silicon controlled control circuit 7 between described silicon-controlled 6 and control module 11, this silicon controlled control circuit 7 is used
In to silicon-controlled 6 offer trigger pulse electric current；
It is provided with optocoupler between the dynamic current holding circuit 9 and control module 11 and transmits control circuit 10, this optocoupler
It transmits control circuit 10 and enabled dynamic current holding circuit 9 is determined the need for according to operating current size；
The control module 11 generates trigger pulse electricity according to alternating current zero cross signal to control silicon controlled control circuit 7
Stream, and according to the whether enabled dynamic current holding circuit 9 of sensed current signal dynamic adjustment from current detection circuit 4, institute
It states light modulation key 14 and is used to control the delay of trigger pulse electric current to realize the control to silicon-controlled 6 angle of flow, the on ＆ off switch
12 generate and close for controlling trigger pulse electric current；
Light luminance contains environmental light brightness information to generate in 22 induced environment of environmental light brightness induction module
Brightness signal, brightness signal is transferred to control module 11 by the central processing module 16, and then adjusts trigger pulse
The delay of electric current is realized the brightness of adjust automatically LED lamp, had both been improved easypro to realize the control to silicon-controlled 6 angle of flow
Adaptive also saves the energy.
One switching power circuit, 1 input terminal is connected to the firewire and zero curve of alternating current, for converting directly mains AC to
It flows low tension and provides electric energy, the Switching Power Supply to control module 11, active rectification amplifying circuit 5, silicon controlled control circuit 7
1 output end of circuit is in series with overvoltage crowbar 2.
Further include humiture induction module 17, for temperature, humidity in induced environment, and by the letter containing humiture information
It number is transferred to central processing module 16, and passes through capacitance touching control screen assembly 15 and shows.
Active rectification amplifying circuit 5 is provided between the current detection circuit 4 and control module 11, when control module 11
It receives the sensed current signal from current detection circuit 4 and is less than setting value, enabled active rectification amplifying circuit 5 will detect electric current
Size, which is amplified, generates amplified sensed current signal.
The silicon controlled control circuit 7 includes triode T3, the silicon-controlled U1 of optocoupler, resistance R41, triode T3 and resistance
R41 connects and is located between voltage end and ground connection, and the resistance R41 is in parallel with the input terminal of the silicon-controlled U1 of optocoupler, triode T3
Base stage be connected to control module 11,2 output ends of the silicon-controlled U1 of optocoupler are connected respectively to silicon-controlled 6 gate pole and input
End.
It includes operation that the current detection circuit 4, which uses Hall current sensing device U3, the active rectification amplifying circuit 5,
Amplifier U4, PMOS device U9, triode T2, the operational amplifier U4 and PMOS device U9 are arranged in series and are respectively positioned on electric current
Between detection circuit 4 and control module 11, the collector and emitter of triode T2 is located at grid and the ground connection of PMOS device U9
Between, and the base stage of triode T2 is connected to control module 11, for receive for amplification and it is normal between the amplification that switches
Selection signal.
It includes PMOS device U6, optocoupler U10 that the optocoupler, which transmits control circuit 10, this PMOS device U6 by resistance with
Source of stable pressure D3 series connection on the basis of 1.25V, the output end of this optocoupler U10 are connected to the gate pole of PMOS device U6, and optocoupler U10's is defeated
Enter end and is connected to control module 11.
Further include camera 18, WIFI module 19, microphone and loudspeaker module 20, the WIFI module 19, microphone
It is connected to central processing module 16 with loudspeaker module 20, can realize amusement and leisure, presentation of information by switch panel.
Intelligent switch panel process of the present embodiment for LED lamp is as follows：As shown in Fig. 1, the intelligence of the present embodiment
Switch panel includes switching power circuit 1, overvoltage crowbar 2, zero cross detection circuit 3, current detection circuit 4, active rectification
Amplifying circuit 5, silicon-controlled 6, silicon controlled control circuit 7, scr promoter current circuit 8, dynamic current holding circuit 9, optocoupler
Control circuit 10, control module 11 are transmitted using microcontroller, button 12 and connector 13, specific circuit diagram please refers to Fig.2,
3、4、5。
The input terminal of switching power circuit 1 described in Fig. 4, Fig. 5 connects city's voltage, overvoltage protection described in output end connection figure 3
The input terminal of circuit 2, the mains signal of input first pass through the switching power circuit 1 be filtered and rectification after be depressured
Export 5V constant voltage sources, after being further depressured for microcontroller 11, silicon controlled control circuit 7, active rectification amplifying circuit 5,
Optocoupler transmits control circuit 10 and provides power supply.
The input terminal of zero cross detection circuit 3 described in Fig. 2 connects city's voltage, by just antiparallel two infraluminescences inside U2
Diode forms, since alternating current positive half period and negative half-cycle can make one of infrared light-emitting diode shine, and
Make triode ON ground connection, T1 inside U2 go out to obtain high level by the current limliting of R5, R6, nearly 0V is crimped in each periodic alternating current
When, for light emitting diode since pressure drop deficiency causes cut-off to be connected, there have been low levels at T1, and alternating voltages is waited to be more than diode
T1 goes out by restoring high level again when conduction voltage drop, has just obtained the alternating current zero cross signal in each period in cycles.
This is signally attached to the interrupting input foot of Fig. 5 microcontrollers 11, and according to the setting of program, microcontroller 11 was obtaining
By certain delay after zero-signal, the pin by being connected to silicon controlled control circuit 7 described in Fig. 4, which exports high level, makes optocoupler
The input terminal infrared light-emitting diode of silicon-controlled U1 is connected, and the output end of U1 is the silicon-controlled of high voltage, and Fig. 4 institutes can be made after conducting
Show that silicon-controlled 6 obtain reliable trigger signal, the effect of the silicon-controlled U1 of optocoupler here is isolation, due to the reference ground of microcontroller 11
Reference not equal to silicon-controlled 6, so microcontroller 11 can not directly drive silicon-controlled 6.
The L of alternating current is through overcurrent sensing circuit 4 in Fig. 2, and silicon-controlled 6, L ' is drawn, load 14 is connected between L ' and N, this
A basic access is constituted, 14 acquisition electric currents are loaded when controlled silicon conducting and are lit, but if load 14 is LED light
It is inductive load since LED lamp is mostly Switching Power Supply when tool, when current switching when power is larger makes silicon-controlled hold
It is accidental switched off by excessively high inverse electromotive force.Another problem of elementary path be when bearing power factor is poor electric current and
Input voltage there are certain phase shift, even if it is silicon-controlled obtain it is enough if the pressure difference at reliable trigger signal both ends, but due to triggering
Electric current not enough and cause it is silicon-controlled can not normal reliable open, flicker, the present invention in for both of these problems at load
Scr promoter current circuit 8 described in Fig. 4 in parallel, R20 and C7 constitute a buffer, absorb 14 switching process of inductive load
In inverse electromotive force, while also providing starting current for silicon-controlled 6 conducting moment, make silicon-controlled 6 smoothly conductings, due to C7
It is the capacitance of nanofarad range, so the influence of power factor (PF) will not be carried out to the load-strap of high power factor,
Another situation that traditional controllable silicon dimmer can be encountered is that electric current when Switching Power Supply works in LED lamp is non-
Linear discrete pulse, maintenance electric current of the electric current less than silicon-controlled minimum when current impulse is in the lowest point and lead to unexpected pass
It closes, flickers, when bearing power is smaller, load current also results in silicon-controlled accident less than silicon-controlled extinction current
It closes, the present invention is loading 14 both ends parallel connection, one dynamic current holding circuit 9 shown in Fig. 2, packet for this problem
Include reduction voltage circuit, electric bridge J3, Hall current sensing device U12, full-wave rectification amplifying circuit, 1.25V centered on amplifier U11
On the basis of source of stable pressure D3, NMOS device U7 and capacitance C8, the reduction voltage circuit for providing constant low-voltage be located at electric bridge
Between source of stable pressure D3, NMOS device U7 on the basis of J3 and 1.25V, the one end NMOS device U7 is connected by resistance R36 and electric bridge J3
Silicon-controlled 6 are connected to, the NMOS device U7 other ends are grounded by resistance R23, R26, and the source of stable pressure D3 on the basis of the 1.25V is located at
Between the grid and ground connection of NMOS device U7, gate pole and the voltage stabilizing on the basis of 1.25V that the capacitance C8 is located at NMOS device U7
Between the D3 of source, effect is to delay the switch time of NMOS device U7 that current spike, the full-wave rectification amplifying circuit is avoided to be located at
Between source of stable pressure D3 on the basis of Hall current sensing device U12 and 1.25V, flows through the electric current of load while also flowing through Hall electricity
Flowing sensing device U12, U12, that the current signal sensed is converted to voltage signal is whole by the all-wave centered on amplifier U11
Current amplifier amplifies the reference input foot with the source of stable pressure D3 being output to after rectification on the basis of 1.25V, it is assumed that converts electricity all
Pressure is U, then flows through the electric current of NMOS device U7 by formula：
It obtains, so the electric current for flowing through NMOS device U7 is set by U, when I is more than setting electric current, on the basis of 1.25V
The reference input terminal voltage of source of stable pressure D3 increases, and causes the source of stable pressure D3 negative and positive electrode impedances on the basis of 1.25V to be lower, NMOS devices
The gate voltage of part U7 also accordingly reduces, thus I just reduces, to the constant current value in setting, P-channel MOSFET U6 and
Optocoupler U10 constitutes optocoupler and transmits control circuit 10, since controllable current holding circuit 9 is not necessarily to work when loading 14 zero load,
So this circuit can make silicon-controlled to obtain enough maintenance electric currents when needed.
The current measurement circuit 4 described in Fig. 2 is looked next at, U3 here is the Hall current sensing device being isolated, it
Input terminal is connected on silicon-controlled 6, and by hall sensing and internal amplification, the pulsating direct current of output 2/3.3V biasings is connected to list
The analog-to-digital conversion input pin of piece machine 11 is calculated, and converts ratio as 264mV/A, and the floating exported when bearing power is smaller is very
It is small, sampling error can be caused larger, if amplifying circuit is added before being connected to microcontroller 11, can cause be when connect load
Output outranges when 500W, and the present invention devises active rectification amplifying circuit shown in Fig. 25 for this problem, this circuit is by one
The amplifying circuit of a dual operational amplifier composition, P-channel MOSFET U9 and N-P-N triodes T2 compositions, T2 are connected to microcontroller
11 common output foot, U9 and T2 form a channel selector, and acquiescence U9 is opened, and the signal of U3 acquisitions conveys after U4 amplifies
It is sampled to microcontroller 11, when microcontroller 11, which samples obtained current value, is greater than the set value certain time, output high level makes U9
The current signal of conducting, U3 acquisitions then by U9 is transported to microcontroller 11 without amplification, to enable signal amplification circuit 5 with
Load active accommodation amplification factor improves sampling precision.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of intelligent switch panel for LED lamp, including zero curve connecting terminal, the cities LED hot terminal Zi He electrical fire
Line connecting terminal, LED hot terminals is for connecting LED lamp, and alternating current hot terminal is for connecting city
Electrical fire line, it is characterised in that：Further include current detection circuit (4), silicon-controlled (6), control module (11), zero cross detection circuit
(3), environmental light brightness induction module (22)；One capacitance touching control screen assembly (15), for controlling capacitance touching control screen assembly
(15) central processing module (16) is electrically connected with control module (11), during the environmental light brightness induction module (22) is connected to
Entreat processing module (16)；
Zero cross detection circuit (3) input terminal is connected to the firewire and zero curve of alternating current, and the output end of this zero cross detection circuit connects
It is connected to control module (11), for detecting zero information in mains AC, to generate alternating current zero cross signal；
Current detection circuit (4), silicon-controlled (6) are in series between LED hot terminals and alternating current hot terminal,
For detecting real-time current size in alternating current firewire and generating sensed current signal, silicon-controlled (6) are used for current detection circuit (4)
Control flows into the current switching of load；
The zero curve connecting terminal, LED hot terminal are parallel with scr promoter current circuit (8), dynamic current maintains
Circuit (9)；
The scr promoter current circuit (8) includes concatenated resistance R20 and capacitance C7, and capacitance C7 absorbs LED lamp switch
Inverse electromotive force in the process, while providing starting current to the conducting moment of silicon-controlled (6) and making in the case where trigger signal drives
Silicon-controlled (6) are connected；
Silicon controlled control circuit (7), this silicon controlled control circuit are provided between silicon-controlled (6) and control module (11)
(7) it is used to provide trigger pulse electric current to silicon-controlled (6)；
It is provided with optocoupler between the dynamic current holding circuit (9) and control module (11) and transmits control circuit (10), this light
Coupling transmits control circuit (10) and determines the need for enabled dynamic current holding circuit (9) according to operating current size；
The control module (11) generates trigger pulse electricity according to alternating current zero cross signal to control silicon controlled control circuit (7)
Stream, and according to the whether enabled dynamic current holding circuit of sensed current signal dynamic adjustment from current detection circuit (4)
(9)；
Light luminance contains environmental light brightness information to generate in environmental light brightness induction module (22) induced environment
Brightness signal is transferred to control module (11) by brightness signal, the central processing module (16), and then adjusts triggering arteries and veins
The delay of electric current is rushed to realize the control to silicon-controlled (6) angle of flow.
2. the intelligent switch panel according to claim 1 for LED lamp, it is characterised in that：The dynamic current dimension
Circuit (9) is held, the starting current for maintaining silicon-controlled (6) to be connected comprising reduction voltage circuit, electric bridge J3, Hall current induction
Device U12, the full-wave rectification amplifying circuit centered on amplifier U11, the source of stable pressure D3 on the basis of 1.25V, NMOS device U7 and
Capacitance C8, the reduction voltage circuit are located between source of stable pressure D3, the NMOS device U7 on the basis of electric bridge J3 and 1.25V, the decompression
For circuit for providing constant low-voltage, the one end NMOS device U7 is connected to silicon-controlled (6), NMOS by resistance R36 and electric bridge J3
For the device U7 other ends by resistance eutral grounding, the source of stable pressure D3 on the basis of the 1.25V is located at grid and the ground connection of NMOS device U7
Between, the capacitance C8 is located between the gate pole of NMOS device U7 and the source of stable pressure D3 on the basis of 1.25V, and it is base to flow through 1.25V
The electric current of accurate source of stable pressure D3 is I, when I is more than setting electric current, the reference input terminal voltage of the source of stable pressure D3 on the basis of 1.25V
Increase, causes the source of stable pressure D3 negative and positive electrode impedances on the basis of 1.25V to be lower, the gate voltage of NMOS device U7 also accordingly drops
Low, thus I just reduces, to the constant current value in setting.
3. the intelligent switch panel according to claim 1 for LED lamp, it is characterised in that：One switching power circuit
(1) input terminal is connected to the firewire and zero curve of alternating current, for converting mains AC to DC low-voltage electricity and to control module
(11), active rectification amplifying circuit (5), silicon controlled control circuit (7) provide electric energy, switching power circuit (1) output end
It is in series with overvoltage crowbar (2).
4. the intelligent switch panel according to claim 1 for LED lamp, it is characterised in that：It further include humiture sense
Module (17) is answered, for temperature, humidity in induced environment, and by the signal transmission containing humiture information to central processing module
(16), it and by capacitance touching control screen assembly (15) shows.
5. the intelligent switch panel according to claim 1 for LED lamp, it is characterised in that：The current detecting electricity
It is provided with active rectification amplifying circuit (5) between road (4) and control module (11), is examined from electric current when control module (11) is received
The sensed current signal of slowdown monitoring circuit (4) is less than setting value, and enabled active rectification amplifying circuit (5) is put size of current is detected
Amplified sensed current signal is generated greatly.
6. the intelligent switch panel according to any one of claims 1 to 4 for LED lamp, it is characterised in that：It is described
Silicon controlled control circuit (7) includes triode T3, the silicon-controlled U1 of optocoupler, resistance R41, triode T3 and resistance R41 series connection and position
Between voltage end and ground connection, the resistance R41 is in parallel with the input terminal of the silicon-controlled U1 of optocoupler, and the base stage of triode T3 is connected to
Control module (11), 2 output ends of the silicon-controlled U1 of optocoupler are connected respectively to the gate pole and input terminal of silicon-controlled (6).
7. according to the intelligent switch panel for LED lamp described in claim 5, it is characterised in that：The current detecting
Circuit (4) uses Hall current sensing device U3, and the active rectification amplifying circuit (5) includes operational amplifier U4, PMOS device
Part U9, triode T2, the operational amplifier U4 and PMOS device U9 are arranged in series and are respectively positioned on current detection circuit (4) and control
Between molding block (11), the collector and emitter of triode T2 is located between the grid and ground connection of PMOS device U9, and three poles
The base stage of pipe T2 is connected to control module (11), for receive for amplification and it is normal between the amplification selection signal that switches.
8. the intelligent switch panel according to any one of claims 1 to 4 for LED lamp, it is characterised in that：It is described
It includes PMOS device U6, optocoupler U10 that optocoupler, which transmits control circuit (10), on the basis of this PMOS device U6 is by resistance and 1.25V
Source of stable pressure D3 series connection, the output end of this optocoupler U10 is connected to the gate pole of PMOS device U6, and the input terminal of optocoupler U10 is connected to
Control module (11).
9. the intelligent switch panel according to any one of claims 1 to 4 for LED lamp, it is characterised in that：Also wrap
Camera (18), WIFI module (19), microphone and loudspeaker module (20) are included,
The WIFI module (19), microphone and loudspeaker module (20) are connected to central processing module (16).
10. the intelligent switch panel according to any one of claims 1 to 4 for LED lamp, it is characterised in that：Institute
It states intelligent switch panel to further include on ＆ off switch (12), just dimming key (13), negative light modulation key (14), the positive light modulation key (13) is born
Key (14) is dimmed, for controlling the delay of trigger pulse electric current to realize the control to silicon-controlled (6) angle of flow, the switch
Key (12) is generated and is closed for controlling trigger pulse electric current.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410390915.8A CN105338687B (en) | 2014-08-09 | 2014-08-09 | intelligent switch panel for LED lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410390915.8A CN105338687B (en) | 2014-08-09 | 2014-08-09 | intelligent switch panel for LED lamp |
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| Publication Number | Publication Date |
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| CN105338687A CN105338687A (en) | 2016-02-17 |
| CN105338687B true CN105338687B (en) | 2018-09-14 |
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| CN201410390915.8A Active CN105338687B (en) | 2014-08-09 | 2014-08-09 | intelligent switch panel for LED lamp |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016207355A1 (en) * | 2016-04-29 | 2017-11-02 | Ford Global Technologies, Llc | LED arrangement and method for ambient light-dependent brightness control of LEDs |
| CN107018615B (en) * | 2017-05-31 | 2024-01-30 | 惠州祺瑞电工有限公司 | Micro-current controlled electronic switch |
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| CN201839477U (en) * | 2010-05-19 | 2011-05-18 | 成都芯源系统有限公司 | LED drive circuit and lamp |
| CN102083254A (en) * | 2009-11-30 | 2011-06-01 | 成都芯源系统有限公司 | WLED driving circuit and driving method suitable for three-terminal controlled silicon dimmer |
| CN202190442U (en) * | 2011-08-04 | 2012-04-11 | 英飞特电子（杭州）有限公司 | Chopping dimming device |
| CN103313472A (en) * | 2010-05-19 | 2013-09-18 | 成都芯源系统有限公司 | LED drive circuit with dimming function and lamp |
| CN103687158A (en) * | 2012-09-25 | 2014-03-26 | 东莞市振源机械设备有限公司 | Capacitive touch light-regulating switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9370071B2 (en) * | 2013-10-31 | 2016-06-14 | iLight, LLC | Lighting device |
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- 2014-08-09 CN CN201410390915.8A patent/CN105338687B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102083254A (en) * | 2009-11-30 | 2011-06-01 | 成都芯源系统有限公司 | WLED driving circuit and driving method suitable for three-terminal controlled silicon dimmer |
| CN201839477U (en) * | 2010-05-19 | 2011-05-18 | 成都芯源系统有限公司 | LED drive circuit and lamp |
| CN103313472A (en) * | 2010-05-19 | 2013-09-18 | 成都芯源系统有限公司 | LED drive circuit with dimming function and lamp |
| CN202190442U (en) * | 2011-08-04 | 2012-04-11 | 英飞特电子（杭州）有限公司 | Chopping dimming device |
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Effective date of registration: 20160918 Address after: 201100, 41 floor, building 3, 398 Heqing Road, Minhang District, Shanghai, Applicant after: Lu Sheng (Shanghai) Technology Co., Ltd. Address before: 201306, C313, room 6, Lane 1750, LU Hong Gang Road, Nanhui new town, Shanghai, Pudong New Area Applicant before: Green environmental protection technology (Shanghai) Co., Ltd. |
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