CN106163013A - LED drive circuit based on the colour temperature modulation of 2.4G - Google Patents
LED drive circuit based on the colour temperature modulation of 2.4G Download PDFInfo
- Publication number
- CN106163013A CN106163013A CN201610768216.1A CN201610768216A CN106163013A CN 106163013 A CN106163013 A CN 106163013A CN 201610768216 A CN201610768216 A CN 201610768216A CN 106163013 A CN106163013 A CN 106163013A
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- China
- Prior art keywords
- constant
- current
- branch road
- led lamp
- control circuit
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Classifications
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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
-
- 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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention belongs to LED lamp actuation techniques field, particularly relate to the LED drive circuit of the colour temperature modulation based on 2.4G, including AC/DC constant voltage source, RF supply module, RF part and LED lamp constant-current control circuit, described AC/DC constant voltage source is connected with described RF supply module, described RF supply module is connected with described RF part, and described RF part is connected with described LED lamp constant-current control circuit.Beneficial effects of the present invention: reasonable in design, by IC driving chip, detects the ac commercial power voltage of rectified 220v, regulates and controls the electric current by LED so that be consistent by the electric current of LED at phase place and input voltage, it is achieved that High Power Factor and high efficiency.LED illuminator part is not necessarily to external bias circuit, can directly use city's electric drive, the substantial amounts of external component that saves, and system is applied and simple.
Description
Technical field
The invention belongs to LED lamp actuation techniques field, particularly relate to the LED drive circuit of the colour temperature modulation based on 2.4G
Lamp bead structure.
Background technology
In illumination applications use LED use be becoming increasingly popular because they than incandescent lamp at effect and Frequency spectrum quality
There is significant advantage.Further, since mercury pollution, they are compared fluorescent lighting system, reduce the impact on environment.It is desirable to use
LED directly substitutes incandescent lamp, without the need for the current wiring of modification, ensures the function of end user simultaneously, including light output
Intensity and colour temperature control dim.
Meanwhile, smart mobile phone will be very popular for lighting.User view can be controlled by smart mobile phone
The ON/OFF of light fixture processed or as required regulation colour temperature brightness.Therefore, it is also important that regulate LED by smart mobile phone
Dimming of tool.
Being currently based on 2.4G control system LED changes in temperature colour temperature modulation technique uses AC/DC constant voltage constant current power+cool colour to ask and drive
Dynamic power supply+warm colour asks driving power supply, and (2.4G is a kind of wireless technology to three partial power compositions, owing to its frequency range is in
It between 2.400GHz～2.4835GHz, is called for short 2.4G wireless technology), the type drive scheme is owing to itself being to have three to open
Close power supply composition, so its stand-by power consumption is exactly three's sum, therefore the stand-by power consumption that stand-by power consumption requires much larger than Energy Star
Require less than 0.5W；Owing to the method Switching Power Supply is bigger to electrochemical capacitor demand, thus affect product reliability；And should
Method, owing to relating to three Switching Power Supplies, affects as LED lamp energy-saving effect calmly.
Content of the invention
For the problems referred to above to be solved, for problem above, the present invention provides IC integration packaging not need external power supply
LED lamp bead structure, goes for multiple wattage, the effective situation solving to cause multiple ceramic substrate because of wattage difference,
Reach rationally efficiently unified purpose.
Technical scheme: based on the LED drive circuit of the colour temperature modulation of 2.4G, it is characterised in that include AC/DC
Constant voltage source, RF supply module, RF part and LED lamp constant-current control circuit, described AC/DC constant voltage source and described RF power
Module connects, and described RF supply module is connected with described RF part, and described RF part is with described LED lamp constant-current control circuit even
Connect.
Described AC/DC constant voltage source L N-port be coupled with civil power 220Vac electrical network fire zero line, described AC DC constant voltage electricity
220Vac/50Hz is AC electrically isolated from and changes into low pressure 24V direct current by source；
Described RF supply module includes low pressure difference linearity stabilizer and electric capacity, described low pressure difference linearity stabilizer and described electricity
Holding parallel connection, described low pressure difference linearity stabilizer is connected with the vcc pin of described RF part, and described low pressure difference linearity stabilizer will be straight
Stream 24V electricity changes into 5V operating voltage and is supplied to RF part, and described electric capacity includes electric capacity C1 and electric capacity C2, described electric capacity C1 and institute
Stating electric capacity C2 series connection, described electric capacity bag is filtered；
Described RF part is wireless receiving and dispatching module, and described RF part is crossed 2.4G radiofrequency signal transmission signal and connected controller,
2.4G radiofrequency signal is converted into the discernible pwm signal of circuit and passes to described LED lamp current constant control electricity by described RF part
The branch road on road, described RF part is connected with the branch road of PWM3 pin and described LED lamp constant-current control circuit by PWM2 pin；
Described RF part carrys out the dutycycle of modulation (PWM) 2 and PWM3 from controller feedback control signal；
Described LED lamp constant-current control circuit includes that the first light fixture current constant control branch road and the second light fixture current constant control prop up
Road, described first light fixture current constant control branch road and described second light fixture current constant control branch circuit parallel connection, passing through of described RF part
PWM2 pin is connected with the first light fixture current constant control branch road of described LED lamp constant-current control circuit, passing through of described RF part
PWM3 pin is connected with the second light fixture current constant control branch road of described LED lamp constant-current control circuit.
Described controller is smart machine terminal or remote controller, and described smart machine terminal is provided with control APP, described control
Device processed passes to RF part by 2.4G radiofrequency signal.
Described first light fixture current constant control branch road and described first light fixture current constant control branch road are all by triode, Mosfet
With regulation resistance composition crossing current control circuit.
Beneficial effects of the present invention: reasonable in design, by IC driving chip, detects the electric main electricity of rectified 220v
Pressure, regulates and controls the electric current by LED so that be consistent by the electric current of LED at phase place and input voltage, it is achieved that high power
Factor and high efficiency.LED illuminator part is not necessarily to external bias circuit, can directly use city's electric drive, substantial amounts of saves outside
Components and parts, system is applied and simple.
Brief description
Fig. 1 is the circuit diagram of the present invention.
In figure, the 1st, AC/DC constant voltage source, the 2nd, RF supply module, the 3rd, RF part, the 4th, LED lamp constant-current control circuit, 5
One light fixture current constant control branch road, the 6th, the second light fixture current constant control branch road.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is explained.
Based on 2.4G colour temperature modulation LED drive circuit, including AC/DC constant voltage source, RF supply module, RF part and
LED lamp constant-current control circuit, described AC/DC constant voltage source is connected with described RF supply module, described RF supply module and institute
Stating RF part to connect, described RF part is connected with described LED lamp constant-current control circuit.
Described AC/DC constant voltage source L N-port be coupled with civil power 220Vac electrical network fire zero line, described AC DC constant voltage electricity
220Vac/50Hz is AC electrically isolated from and changes into low pressure 24V direct current by source；
Described RF supply module includes low pressure difference linearity stabilizer (LDO) and electric capacity, described low pressure difference linearity stabilizer and
Described electric capacity is in parallel, and described low pressure difference linearity stabilizer is connected with the vcc pin of described RF part, and described low pressure difference linearity is stable
Direct current 24V electricity is changed into 5V operating voltage and is supplied to RF part by device, and described electric capacity includes electric capacity C1 and electric capacity C2, described electric capacity
C1 and described electric capacity C2 series connection, described electric capacity bag is filtered；
Described RF part is wireless receiving and dispatching module, and described RF part is crossed 2.4G radiofrequency signal transmission signal and connected controller,
2.4G radiofrequency signal is converted into the discernible pwm signal of circuit and passes to described LED lamp current constant control electricity by described RF part
The branch road on road, described RF part is connected with the branch road of PWM3 pin and described LED lamp constant-current control circuit by PWM2 pin；
Described RF part carrys out the dutycycle of modulation (PWM) 2 and PWM3 from controller feedback control signal；
Described LED lamp constant-current control circuit includes that the first light fixture current constant control branch road and the second light fixture current constant control prop up
Road, described first light fixture current constant control branch road and described second light fixture current constant control branch circuit parallel connection, passing through of described RF part
PWM2 pin is connected with the first light fixture current constant control branch road of described LED lamp constant-current control circuit, passing through of described RF part
PWM3 pin is connected with the second light fixture current constant control branch road of described LED lamp constant-current control circuit.
Described controller is smart machine terminal or remote controller, and described smart machine terminal is provided with control APP, described control
Device processed passes to RF part by 2.4G radiofrequency signal.
Described first light fixture current constant control branch road and described first light fixture current constant control branch road are all by triode, Mosfet
With regulation resistance composition crossing current control circuit.
Make use-case: the L N-port of 1.AC DC constant voltage source is coupled with civil power 220Vac electrical network fire zero line, AC DC constant voltage
220Vac/50Hz is AC electrically isolated from and changes into low pressure 24V direct current by power supply；
2. direct current 24V electricity is changed into 5V operating voltage by low pressure difference linearity stabilizer (LDO) by RF supply module described in
Being supplied to RF part, electric capacity C1 and electric capacity C2 is filtered；
3.RF part connects smart machine terminal or remote controller by 2.4G radiofrequency signal transmission signal, and described RF part will
2.4G radiofrequency signal is converted into the branch road that the discernible pwm signal of circuit passes to described LED lamp constant-current control circuit, described
RF part is connected with the branch road of PWM3 pin and described LED lamp constant-current control circuit by PWM2 pin；Described RF part from
Controller feedback control signal carrys out the dutycycle of modulation (PWM) 2 and PWM3；
4. LED lamp constant-current control circuit described in includes that the first light fixture current constant control branch road and the second light fixture current constant control prop up
Road, described first light fixture current constant control branch road and described second light fixture current constant control branch circuit parallel connection, passing through of described RF part
PWM2 pin is connected with the first light fixture current constant control branch road of described LED lamp constant-current control circuit, described first light fixture constant current
Controlling brancher is formed crossing current control circuit by triode D1, D4, D7, D10, Mosfe Q1 and regulation resistance R1.Described RF part
Be connected with the first light fixture current constant control branch road of described LED lamp constant-current control circuit by PWM3 pin, described second lamp
Tool current constant control props up route triode D2, D5, D8, D11, MosfetQ2 and regulation resistance R2 composition crossing current control circuit；
The control signal that RF part will receive from intelligent terminal or controller, and change into different duty pwm signal
PWM2, PWM3 pin via RF part controls the ON time T of MosfetQ1, MosfeQ2Q1ON, TQ2on；By RF part
Internal logic computing makes the ON time T of MosfetQ1, MosfetQ2Q1ON, TQ2onComplementary；And T to be ensuredQ1ON+TQ2on≤
1；
Described first light fixture current constant control branch road and described first light fixture current constant control branch road, can be by regulation resistance R1R2
Resistance realize expected branch current required for brightness；
5. current constant control logic
Constant-current control circuit utilizes MosfetQ1, Q2 and triode Q6, Q4 and resistance R1, R2 two constant current nets of composition
Network；
Respectively flow through two branch currents Io1=Vs1/R1, Io2=Vs2/R2；
Flow through the average current Iav1=Io1*Ton1/T Iav2=Io2*Ton2/T of every branch road
Wherein: Io1=Io2=Io
So: Iav1=Io*Ton1/T
Iav2=Io*Ton2/T
6. brightness regulation and colour temperature modulation control logic
Order: Ton=Ton1+Ton2
T=Ton+Toff
Wherein T is the RF output pwm signal whole cycle；
Ton is the summation of the ON time of all pwm signals of RF output；
Toff is the summation of the turn-off time of all pwm signals of RF output；
Shift formula above in conjunction with onto to understand, every branch road average current Iav only with its place branch road Mosfet ON time
Related, so we can be regulated the average current of all branch roads by changing the Ton time of the pwm signal of RF output, from
And realize that lamp brightness is regulated；
In like manner, we are by controlling the ON time of Mosfet, i.e. the ON time by control Ton1 and Ton2, and make
Ton1+Ton2=Ton；By changing Ton ratio shared by Ton1 and Ton2, we can realize that colour temperature is regulated；
Above an example of the present invention is described in detail, but described content has been only the preferable enforcement of the present invention
Example, it is impossible to be considered the practical range for limiting the present invention.All equalizations made according to the present patent application scope change and improve
Deng all should still belong within the patent covering scope of the present invention.
Claims (4)
1. the LED drive circuit modulated based on the colour temperature of 2.4G RF part, it is characterised in that include that AC/DC constant voltage source, RF supply
Electricity module, RF part and LED lamp constant-current control circuit, described AC/DC constant voltage source is connected with described RF supply module, described
RF supply module is connected with described RF part, and described RF part is connected with described LED lamp constant-current control circuit.
2. the LED drive circuit of the colour temperature modulation based on 2.4G according to claim 1, it is characterised in that described AC/DC
Constant voltage source L N-port be coupled with civil power 220Vac electrical network fire zero line, described AC DC constant voltage source by 220Vac/50Hz hand over
Galvanic isolation changes into low pressure 24V direct current；
Described RF supply module includes low pressure difference linearity stabilizer and electric capacity, and described low pressure difference linearity stabilizer and described electric capacity are simultaneously
Connection, described low pressure difference linearity stabilizer is connected with the vcc pin of described RF part, and described low pressure difference linearity stabilizer is by direct current
24V electricity changes into 5V operating voltage and is supplied to RF part, and described electric capacity includes electric capacity C1 and electric capacity C2, described electric capacity C1 and described
Electric capacity C2 connects, and described electric capacity bag is filtered；
Described RF part is wireless receiving and dispatching module, and described RF part is crossed 2.4G radiofrequency signal transmission signal and connected controller, described
2.4G radiofrequency signal is converted into the discernible pwm signal of circuit and passes to described LED lamp constant-current control circuit by RF part
Branch road, described RF part is connected with the branch road of PWM3 pin and described LED lamp constant-current control circuit by PWM2 pin；Described
RF part carrys out the dutycycle of modulation (PWM) 2 and PWM3 from controller feedback control signal；
Described LED lamp constant-current control circuit includes the first light fixture current constant control branch road and the second light fixture current constant control branch road, institute
State the first light fixture current constant control branch road and described second light fixture current constant control branch circuit parallel connection, described RF part by PWM2 pin
Be connected with the first light fixture current constant control branch road of described LED lamp constant-current control circuit, described RF part by PWM3 pin
It is connected with the second light fixture current constant control branch road of described LED lamp constant-current control circuit.
3. the LED drive circuit of the colour temperature modulation based on 2.4G according to claim 2, it is characterised in that described controller
For smart machine terminal or remote controller, described smart machine terminal is provided with control APP, and described controller is believed by 2.4G radio frequency
Number pass to RF part.
4. the LED drive circuit of the colour temperature modulation based on 2.4G according to claim 1, it is characterised in that described first lamp
Tool current constant control branch road and described first light fixture current constant control branch road are all formed crossing current by triode, Mosfet and regulation resistance
Control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768216.1A CN106163013A (en) | 2016-08-30 | 2016-08-30 | LED drive circuit based on the colour temperature modulation of 2.4G |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768216.1A CN106163013A (en) | 2016-08-30 | 2016-08-30 | LED drive circuit based on the colour temperature modulation of 2.4G |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106163013A true CN106163013A (en) | 2016-11-23 |
Family
ID=57345037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610768216.1A Pending CN106163013A (en) | 2016-08-30 | 2016-08-30 | LED drive circuit based on the colour temperature modulation of 2.4G |
Country Status (1)
| Country | Link |
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| CN (1) | CN106163013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211445A (en) * | 2016-07-20 | 2016-12-07 | 中山市颢景电子科技有限公司 | Double power incremental type LED drive power |
| CN106658837A (en) * | 2016-11-29 | 2017-05-10 | 北京小米移动软件有限公司 | LED driving circuit, LED regulation circuit and LED module |
| CN107087327A (en) * | 2017-05-28 | 2017-08-22 | 巨尔(上海)光电照明有限公司 | LED/light source regulating system and its adjusting method |
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| CN205196026U (en) * | 2015-10-22 | 2016-04-27 | 中山雷士灯饰科技有限公司 | Intelligent lighting control device by WIFI communication control |
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| CN202103913U (en) * | 2011-06-17 | 2012-01-04 | 英飞特光电（杭州）有限公司 | Led adjusting system |
| US20150366032A1 (en) * | 2014-06-11 | 2015-12-17 | Richtek Technology Corporation | Retaining circuit and light emitting device driver circuit with retaining circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211445A (en) * | 2016-07-20 | 2016-12-07 | 中山市颢景电子科技有限公司 | Double power incremental type LED drive power |
| CN106658837A (en) * | 2016-11-29 | 2017-05-10 | 北京小米移动软件有限公司 | LED driving circuit, LED regulation circuit and LED module |
| CN107087327A (en) * | 2017-05-28 | 2017-08-22 | 巨尔(上海)光电照明有限公司 | LED/light source regulating system and its adjusting method |
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Application publication date: 20161123 |