CN206136373U - LED drive circuit of colour temperature modulation based on 2. 4G - Google Patents
LED drive circuit of colour temperature modulation based on 2. 4G Download PDFInfo
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- CN206136373U CN206136373U CN201620992968.1U CN201620992968U CN206136373U CN 206136373 U CN206136373 U CN 206136373U CN 201620992968 U CN201620992968 U CN 201620992968U CN 206136373 U CN206136373 U CN 206136373U
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Abstract
The utility model belongs to the technical field of the drive of LED lamps and lanterns, especially, relate to LED drive circuit of colour temperature modulation based on 2.4G, including ACDC constant voltage power supply, RF power module, RF subtotal LED lamps and lanterns constant current control circuit, ACDC constant voltage power supply with RF power module connects, RF power module with the RF part is connected, RF part with LED lamps and lanterns constant current control circuit connects. The beneficial effect of the utility model: reasonable in design through IC driver chip, detects the electric main voltage through the 220v of rectification, comes the electric current of regulation and control through LED for electric current through LED is unanimous in phase place and input voltage, has realized high power factor and high efficiency. LED luminous element part need not outside bias circuit, can directly use municipality's electric drive, a large amount of has saved outside components and parts, and the system uses and simply.
Description
Technical field
This utility model belongs to LED lamp actuation techniques field, more particularly to the LED that the colour temperature based on 2.4G is modulated drives
Circuit lamp bead structure.
Background technology
In illumination applications using LED using being becoming increasingly popular because they than electric filament lamp in effect and Frequency spectrum quality
There is significant advantage.Further, since mercury pollution, they compare fluorescent lighting system, reduce the impact to environment.It is desirable to
LED directly substitutes electric filament lamp, without the need for the current wiring of modification, while ensure the function of end user, including light output
Intensity and colour temperature control are dimmed.
At the same time, 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 adjusts as needed colour temperature brightness.Therefore, it is also important that LED is adjusted by smart mobile phone
What is had dims.
It is currently based on 2.4G control systems LED changes in temperature colour temperature modulation technique and asks drive using AC/DC constant voltage constant current powers+cool colour
Galvanic electricity source+warm colour asks driving power supply, and (2.4G is a kind of wireless technology to three partial powers composition, because its frequency range is in
Between 2.400GHz～2.4835GHz, abbreviation 2.4G wireless technologys), the type drive scheme is due to itself being have three to open
Powered-down source composition, so its stand-by power consumption is exactly three's sum, therefore stand-by power consumption is much larger than the stand-by power consumption that Energy Star is required
Require less than 0.5W；Due to the method Switching Power Supply to electrochemical capacitor demand than larger, so as to affect product reliability；And should
Method is affected as LED lamp energy-saving effect calmly due to being related to three Switching Power Supplies.
Utility model content
For the LED drive circuit that the problems referred to above to be solved, colour temperature of this utility model offer based on 2.4G are modulated.
The technical solution of the utility model：The LED drive circuit that colour temperature based on 2.4G is modulated, it is characterised in that include
AC/DC constant voltage sources, RF supply modules, RF part and LED lamp constant-current control circuit, the AC/DC constant voltage sources with it is described
RF supply modules connect, and the RF supply modules and the RF part be connected, and the RF is partly and the LED lamp current constant control
Circuit connects.
The AC/DC constant voltage sources L N-port be coupled with civil power 220Vac electrical networks fire zero line, the AC DC constant pressures electricity
220Vac/50Hz is AC electrically isolated from and changes into low pressure 24V unidirectional current by source；
The RF supply modules include low pressure difference linearity regulator and electric capacity, the low pressure difference linearity regulator and the electricity
Hold parallel connection, the low pressure difference linearity regulator is connected with the vcc pins of the RF parts, the low pressure difference linearity regulator will be straight
Stream 24V electricity changes into 5V running voltages and is supplied to RF parts, the electric capacity to include electric capacity C1 and electric capacity C2, the electric capacity C1 and institute
Electric capacity C2 series connection is stated, the electric capacity bag is filtered；
The RF parts are wireless receiving and dispatching module, and signal connection control is transmitted in the RF parts by 2.4G radiofrequency signals
2.4G radiofrequency signals are converted into the discernible pwm signal of circuit and pass to the LED lamp current constant control by device, the RF parts
The branch road of circuit, the RF parts are connected with PWM3 pins by PWM2 pins with the branch road of the LED lamp constant-current control circuit
Connect；The RF parts carry out the dutycycle of modulation (PWM) 2 and PWM3 from controller feedback control signal；
The LED lamp constant-current control circuit includes the first light fixture current constant control branch road and the second light fixture current constant control
Road, the first light fixture current constant control branch road and the second light fixture current constant control branch circuit parallel connection, the RF parts pass through
PWM2 pins are connected with the first light fixture current constant control branch road of the LED lamp constant-current control circuit, and the RF parts pass through
PWM3 pins are connected with the second light fixture current constant control branch road of the LED lamp constant-current control circuit.
The controller is smart machine terminal or remote control, and the smart machine terminal is provided with control APP, the control
Device processed passes to RF parts by 2.4G radiofrequency signals.
The first light fixture current constant control branch road and the second light fixture current constant control branch road are by audion, Mosfet
With the constant-current control circuit for adjusting resistance composition.
The beneficial effects of the utility model：It is reasonable in design, by IC driving chips, detect the exchange city of rectified 220v
Piezoelectric voltage is regulating and controlling the electric current by LED so that by the electric current of LED in phase place and input voltage be consistent, realizes height
Power factor and high efficiency.LED illuminator part can directly use city's electric drive without the need for external bias circuit, substantial amounts of to save
External component, system application and its simple.
Description of the drawings
Fig. 1 is circuit diagram of the present utility model.
In figure, 1, AC/DC constant voltage sources, 2, RF supply modules, 3, RF parts, 4, LED lamp constant-current control circuit, 5
One light fixture current constant control branch road, the 6, second light fixture current constant control branch road.
Specific embodiment
Specific embodiment of the present utility model is explained below in conjunction with the accompanying drawings.
Based on 2.4G colour temperature modulate LED drive circuit, including AC/DC constant voltage sources, RF supply modules, RF part and
LED lamp constant-current control circuit, the AC/DC constant voltage sources are connected with the RF supply modules, the RF supply modules and institute
State RF parts to connect, the RF parts are connected with the LED lamp constant-current control circuit.
The AC/DC constant voltage sources L N-port be coupled with civil power 220Vac electrical networks fire zero line, the AC DC constant pressures electricity
220Vac/50Hz is AC electrically isolated from and changes into low pressure 24V unidirectional current by source；
The RF supply modules include low pressure difference linearity regulator (LDO) and electric capacity, the low pressure difference linearity regulator and
The electric capacity is in parallel, and the low pressure difference linearity regulator is connected with the vcc pins of the RF parts, and the low pressure difference linearity is stablized
Direct current 24V electricity is changed into 5V running voltages and is supplied to RF parts, the electric capacity to include electric capacity C1 and electric capacity C2, the electric capacity by device
The C1 and electric capacity C2 connects, and the electric capacity bag is filtered；
The RF parts are wireless receiving and dispatching module, and signal connection control is transmitted in the RF parts by 2.4G radiofrequency signals
2.4G radiofrequency signals are converted into the discernible pwm signal of circuit and pass to the LED lamp current constant control by device, the RF parts
The branch road of circuit, the RF parts are connected with PWM3 pins by PWM2 pins with the branch road of the LED lamp constant-current control circuit
Connect；The RF parts carry out the dutycycle of modulation (PWM) 2 and PWM3 from controller feedback control signal；
The LED lamp constant-current control circuit includes the first light fixture current constant control branch road and the second light fixture current constant control
Road, the first light fixture current constant control branch road and the second light fixture current constant control branch circuit parallel connection, the RF parts pass through
PWM2 pins are connected with the first light fixture current constant control branch road of the LED lamp constant-current control circuit, and the RF parts pass through
PWM3 pins are connected with the second light fixture current constant control branch road of the LED lamp constant-current control circuit.
The controller is smart machine terminal or remote control, and the smart machine terminal is provided with control APP, the control
Device processed passes to RF parts by 2.4G radiofrequency signals.
The first light fixture current constant control branch road and the second light fixture current constant control branch road are by audion, Mosfet
With the constant-current control circuit for adjusting resistance composition.
Use example：1.AC DC constant voltage sources L N-port be coupled with civil power 220Vac electrical networks fire zero line, AC DC constant pressures
220Vac/50Hz is AC electrically isolated from and changes into low pressure 24V unidirectional current by power supply；
2. direct current 24V electricity is changed into 5V running voltages by RF supply modules described in by low pressure difference linearity regulator (LDO)
It is supplied to RF parts, electric capacity C1 and electric capacity C2 to be filtered；
3.RF parts are transmitted signal and connect smart machine terminal or remote control by 2.4G radiofrequency signals, and the RF parts will
2.4G radiofrequency signals are converted into the branch road that the discernible pwm signal of circuit passes to the LED lamp constant-current control circuit, described
RF parts are connected by PWM2 pins with PWM3 pins with the branch road of the LED lamp constant-current control circuit；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 the first light fixture current constant control branch road and the second light fixture current constant control
Road, the first light fixture current constant control branch road and the second light fixture current constant control branch circuit parallel connection, the RF parts pass through
PWM2 pins are connected with the first light fixture current constant control branch road of the LED lamp constant-current control circuit, the first light fixture constant current
Controlling brancher constitutes constant-current control circuit by audion D1, D4, D7, D10, Mosfe Q1 and regulation resistance R1.The RF parts
Be connected with the first light fixture current constant control branch road of the LED lamp constant-current control circuit by PWM3 pins, second lamp
Tool current constant control route audion D2, D5, D8, D11, MosfetQ2 and regulation resistance R2 composition constant-current control circuits；
The control signal that RF parts will receive from intelligent terminal or controller, and change into different duty pwm signal
The ON time T of MosfetQ1, MosfeQ2 is controlled via PWM2, PWM3 pin of RF partsQ1ON, TQ2on；By RF parts
Internal logic computing makes the ON time T of MosfetQ1, MosfetQ2Q1ON, TQ2onIt is complementary；And ensure TQ1ON+TQ2on≤
1；
The first light fixture current constant control branch road and the first light fixture current constant control branch road, can be by adjusting resistance R1R2
The resistance branch current of realizing required for expected brightness；
5. current constant control logic
Constant-current control circuit constitutes two constant current nets using MosfetQ1, Q2 and audion Q6, Q4 and resistance R1, R2
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 RF output pwm signal whole cycles；
Ton is the summation of the ON time that RF exports all pwm signals；
Toff is the summation of the turn-off time that RF exports all pwm signals；
Understand with reference to formula is shifted onto above, every branch road average current Iav only with branch road Mosfet ON times that it is located
Correlation, so we can adjust the average current of all branch roads by the Ton times of the pwm signal of change RF outputs, from
And realize that lamp brightness is adjusted；
In the same manner, we that is, by controlling the ON time of Ton1 and Ton2, and are made by the ON time of control Mosfet
Ton1+Ton2=Ton；We can realize colour temperature and adjust by changing Ton ratios shared by Ton1 and Ton2；
An example of the present utility model has been described in detail above, but the content be only it is of the present utility model compared with
Good embodiment, it is impossible to be considered as limiting practical range of the present utility model.It is all to be made according to this utility model application range
Impartial change and improvement etc., all should still belong within patent covering scope of the present utility model.
Claims (4)
1. based on 2.4G colour temperature modulate LED drive circuit, it is characterised in that including AC/DC constant voltage sources, RF supply modules,
RF parts and LED lamp constant-current control circuit, the AC/DC constant voltage sources are connected with the RF supply modules, and the RF powers
Module is connected with RF parts, and the RF parts are connected with the LED lamp constant-current control circuit.
2. the LED drive circuit that the colour temperature based on 2.4G according to claim 1 is modulated, it is characterised in that the AC/DC
Constant voltage source L N-port be coupled with civil power 220Vac electrical networks fire zero line, the AC DC constant voltage sources 220Vac/50Hz is handed over
Galvanic isolation changes into low pressure 24V unidirectional current；
The RF supply modules include low pressure difference linearity regulator and electric capacity, and the low pressure difference linearity regulator and the electric capacity are simultaneously
Connection, the low pressure difference linearity regulator is connected with the vcc pins of the RF parts, and the low pressure difference linearity regulator is by direct current
24V electricity changes into 5V running voltages and is supplied to RF parts, and the electric capacity includes electric capacity C1 and electric capacity C2, the electric capacity C1 and described
Electric capacity C2 connects, and the electric capacity bag is filtered；
The RF parts are wireless receiving and dispatching module, and the RF parts are transmitted signal and connect controller, institute by 2.4G radiofrequency signals
Partly 2.4G radiofrequency signals are converted into into the discernible pwm signal of circuit passes to the LED lamp constant-current control circuit to state RF
Branch road, RF part is connected by PWM2 pins with PWM3 pins with the branch road of the LED lamp constant-current control circuit；Institute
State the dutycycle that RF parts come modulation (PWM) 2 and PWM3 from controller feedback control signal；
The 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 the second light fixture current constant control branch circuit parallel connection, the RF parts by PWM2 pins
Be connected with the first light fixture current constant control branch road of the LED lamp constant-current control circuit, the RF parts by PWM3 pins
It is connected with the second light fixture current constant control branch road of the LED lamp constant-current control circuit.
3. the LED drive circuit that the colour temperature based on 2.4G according to claim 2 is modulated, it is characterised in that the controller
For smart machine terminal or remote control, the smart machine terminal is provided with control APP, and the controller is believed by 2.4G radio frequencies
Number pass to RF parts.
4. the LED drive circuit that the colour temperature based on 2.4G according to claim 2 is modulated, it is characterised in that first lamp
Tool current constant control branch road and the second light fixture current constant control branch road by audion, Mosfet and adjust the perseverance that resistance is constituted
Flow control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620992968.1U CN206136373U (en) | 2016-08-30 | 2016-08-30 | LED drive circuit of colour temperature modulation based on 2. 4G |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620992968.1U CN206136373U (en) | 2016-08-30 | 2016-08-30 | LED drive circuit of colour temperature modulation based on 2. 4G |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206136373U true CN206136373U (en) | 2017-04-26 |
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ID=58565261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620992968.1U Expired - Fee Related CN206136373U (en) | 2016-08-30 | 2016-08-30 | LED drive circuit of colour temperature modulation based on 2. 4G |
Country Status (1)
| Country | Link |
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| CN (1) | CN206136373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106163013A (en) * | 2016-08-30 | 2016-11-23 | 天津睿泽科技发展有限公司 | LED drive circuit based on the colour temperature modulation of 2.4G |
-
2016
- 2016-08-30 CN CN201620992968.1U patent/CN206136373U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106163013A (en) * | 2016-08-30 | 2016-11-23 | 天津睿泽科技发展有限公司 | LED drive circuit based on the colour temperature modulation of 2.4G |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20170830 |
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| CF01 | Termination of patent right due to non-payment of annual fee |