CN203974665U - LED automobile front distance-light conversion control circuit - Google Patents
LED automobile front distance-light conversion control circuit Download PDFInfo
- Publication number
- CN203974665U CN203974665U CN201420450358.XU CN201420450358U CN203974665U CN 203974665 U CN203974665 U CN 203974665U CN 201420450358 U CN201420450358 U CN 201420450358U CN 203974665 U CN203974665 U CN 203974665U
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- light
- distance
- led
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Led Devices (AREA)
Abstract
The utility model discloses a kind of LED automobile front distance-light conversion control circuit, traditional LED near light and far light control circuit of automotive headlamp comprises two LED drive circuits, whether turn-off one of them control circuit realization far and near pass control by controlling, control weak effect, cost is higher.The utility model has been realized a kind of novel LED automobile front distance-light conversion control circuit, only use a driving circuit just to complete the control of distance-light, by changing the resistance of sampling resistor, change the size that feeds back to driving circuit voltage signal, affect driving circuit and export different drive currents, and then reach the object of output different light intensity.The utility model has only been used a driving circuit, has saved cost; What distance-light switched change is the brightness of all LED, controls effective; Adopted the metal-oxide-semiconductor of low conducting internal resistance, and the resistance of sampling resistor is very little, the power consumption of whole control system is little, has improved the reliability of system.
Description
Technical field
The utility model is a kind of LED automobile front distance-light conversion control circuit, is mainly used in LED automobile front distance-light integrated lamp, belongs to electronic technology field.
Background technology
Automobile front is a vitals that ensures vehicle safety travel.When running car is on unglazed photograph or the very weak road surface of illumination, driver need to open country beam, ensures enough irradiation distances and Illumination intensity; And in the time travelling at avenue, need to be again switched to passing light, in order to avoid affect other vehicle and pedestrian.
LED automobile front is the new automobile head light occurring in recent years, has the plurality of advantages such as energy-saving and environmental protection, life-span length, high brightness, high temperature resistant, volume is little, good stability, luminance purity is high, speed of response is fast.Traditional LED automobile front distance-light control is to rely on two LED drive circuits, and when in distance light mode of operation, two driving circuits are all worked, and all LED are lit; And while being switched to low-beam operational state, only allowing a drive circuit works, part LED is lit.Traditional LED automobile front is realized distance-light control with two identical driving circuits, controls weak effect, and cost is higher.
Utility model content
The utility model, for the deficiencies in the prior art, has proposed a kind of LED automobile front distance-light conversion control circuit.
A kind of LED automobile front distance-light conversion control circuit, comprises interface protective circuit, constant-current drive circuit, great power LED circuit, distance-light control switching circuit.
LED automobile front distance-light conversion control circuit, comprises interface protective circuit, constant-current drive circuit, great power LED circuit, distance-light control switching circuit; Described interface protective circuit, constant-current drive circuit, great power LED circuit connect successively; The input end of described distance-light control switching circuit is connected with interface protective circuit, great power LED circuit, and mouth is connected with constant-current drive circuit; Described distance-light control switching circuit comprises the 5th resistance R 5, the 6th resistance R 6, a NPN type aerotron NPN1, the second metal-oxide-semiconductor Q2, the 3rd resistance R 3, the 4th resistance R 4; One end of the 6th described resistance R 6 is connected with the base stage of a NPN type aerotron NPN1; The one collecting electrode of NPN type aerotron NPN1 and one end of the 5th resistance R 5, the grid of the second metal-oxide-semiconductor Q2 are connected; The drain electrode of the second metal-oxide-semiconductor is connected with one end of the 3rd resistance R 3; The other end of the 3rd resistance R 3 is connected with one end of the 4th resistance R 4; The other end of the 4th resistance R 4 is connected with the source electrode of the second metal-oxide-semiconductor Q2, the emitter of a NPN type aerotron NPN1.
The beneficial effects of the utility model: this novel LED automobile front distance-light conversion control circuit has only used a driving circuit just to complete the control of distance-light, has saved the cost of automobile front; What distance-light switched change is the brightness of all LED, controls effective.The utility model has adopted the metal-oxide-semiconductor of low conducting internal resistance, and the resistance of sampling resistor is very little, and this just makes the power consumption of whole control system very little, has alleviated the heat radiation pressure of automobile front, has improved the reliability of system.
Brief description of the drawings
Fig. 1 is circuit diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1, a kind of LED automobile front distance-light conversion control circuit, comprises interface protective circuit, constant-current drive circuit, great power LED circuit, distance-light control switching circuit.
Interface protective circuit comprises first end daughter board J1 and the first diode V1(SK54); Described first end daughter board J1 is that reserve and interface outside automotive battery; The port one of first end daughter board J1 is connected with the positive pole of the positive pole of storage battery, the first diode V1; The port 2 of first end daughter board J1 connects the negative pole of storage battery; The port 3 of first end daughter board J1 is connected with distance-light control end.
Constant-current drive circuit comprises the first IC chip U1 (MG20U201), the second resistance R 2 (0 Ω), the first filter capacitor C2(10nF), the first resistance R 1(240K Ω), the first decoupling capacitor C1(10uF/100V), the 7th resistance R 7(4.7K Ω), the second diode V2(SK54), the first inductance L 1(680uH/5A), the first metal-oxide-semiconductor Q1(IRF1205); The VIN end of the first described IC chip U1 is connected with one end of the second resistance R 2, one end of CS end and the first filter capacitor C2, one end of RT pin and the first resistance R 1; The VDD pin of the first IC chip U1 is connected with the PWM pin of the first IC chip U1, the positive pole of the first decoupling capacitor C1, one end of the 7th resistance R 7; The GATE end of the first ic core U1 is connected with the other end of the first resistance R 1, the G utmost point of the first metal-oxide-semiconductor Q1; The drain electrode of the first metal-oxide-semiconductor Q1 is connected with the positive pole of the second diode V2, one end of the first inductance L 1; The other end of the second resistance R 2 is connected with the other end of the 7th resistance R 7, the negative pole of the second diode V2, the negative pole of the first diode V1; The GND end of the first IC chip U1 is connected with the other end of the first filter capacitor C2, the negative pole of the first decoupling capacitor C1, the port 2 of first end daughter board J1.
Great power LED circuit comprises a LEDDS1 (3WLED lamp pearl), the 2nd LEDDS2 (3WLED lamp pearl), the 3rd LEDDS3 (3WLED lamp pearl), the 4th LEDDS4 (3WLED lamp pearl), the 5th LEDDS5 (3WLED lamp pearl), the 6th LEDDS6 (3WLED lamp pearl), the 7th LEDDS7 (3WLED lamp pearl), the 8th LEDDS8 (3WLED lamp pearl), the 9th LEDDS9 (3WLED lamp pearl), the tenth LEDDS10 (3WLED lamp pearl), the 11 LEDDS11 (3WLED lamp pearl), the 12 LEDDS12 (3WLED lamp pearl), the negative pole of a described LEDDS1 is connected with the positive pole of the 7th LEDDS7, the negative pole of the 2nd LEDDS2 is connected with the positive pole of the 12 LEDDS12, the negative pole of the 3rd LEDDS3 is connected with the positive pole of the 8th LEDDS8, the negative pole of the 4th LEDDS4 is connected with the positive pole of the 9th LEDDS9, the negative pole of the 5th LEDDS5 is connected with the positive pole of the tenth LEDDS10, and the negative pole of the 6th LEDDS6 is connected with the positive pole of the 11 LEDDS11, the negative pole of the 7th LEDDS7, the 8th LEDDS8, the 9th LEDDS9, the tenth LEDDS10, the 11 LEDDS11, the 12 LEDDS12 is all connected with the other end of the first inductance L 1, the positive pole of the one LEDDS1, the 2nd LEDDS2, the 3rd LEDDS3, the 4th LEDDS4, the 5th LEDDS5, the 6th LEDDS6 is all connected with the negative pole of the second diode V2.
Distance-light control switching circuit comprises the 5th resistance R 5(430 Ω), the 6th resistance R 6(5.1K Ω), a NPN type aerotron NPN1(8050S), the second metal-oxide-semiconductor Q2(IRF7821), the 3rd resistance R 3 (0.16 Ω/1W), the 4th resistance R 4(0.16 Ω/1W); One end of the 6th described resistance R 6 is connected with the base stage of a NPN type aerotron NPN1; The one collecting electrode of NPN type aerotron NPN1 and one end of the 5th resistance R 5, the grid of the second metal-oxide-semiconductor Q2 are connected; The drain electrode of the second metal-oxide-semiconductor is connected with one end of the 3rd resistance R 3; The other end of the 3rd resistance R 3 is connected with one end of the 4th resistance R 4, the source electrode of the first metal-oxide-semiconductor Q1, the CS end of the first IC chip U1; The other end of the 4th resistance R 4 is connected with the source electrode of the second metal-oxide-semiconductor Q2, the emitter of a NPN type aerotron NPN1, the port 2 of first end daughter board J1; The other end of the 5th resistance R 5 is connected with the negative pole of the first diode V1; The other end of the 6th resistance R 6 is connected with the port 3 of first end daughter board J1.
The utility model is mainly to adopt LED constant-current driven chip MG20U201 to drive 12 great power LEDs; Hold the resistance of the sampling resistor connecting by changing MG20U201CS, and then have influence on the size of MG20U201 output driving LED array current, thereby change the luminous intensity of LED array.When distance-light control end (port 3 of first end daughter board J1) is when distance light mode of operation (low level), the one NPN type aerotron NPN1 is operated in by district, the very high level of current collection of the one NPN type aerotron NPN1, thereby second metal-oxide-semiconductor in conducting state, sampling resistor is composed in parallel by the 3rd resistance R 3 and the 4th resistance R 4, and the total current of supposing driving LED array is now I.When distance-light control end (port 3 of first end daughter board J1) is when low-beam operational state (high level), the one NPN type aerotron NPN1 is operated in saturation region, the very low level of current collection of the one NPN type aerotron NPN1, thereby second metal-oxide-semiconductor in off state, sampling resistor is only made up of the 4th resistance R 4.Known according to the operator's hand book of MG20U201, the resistance of its output driving current and sampling resistor is inversely proportional to, and when dipped beam is worked so, the total current of driving LED array is R3*I/ (R3+R4).This control system, by the resistance of the sampling resistor of change MG20U201, realizes the different drive current of output, thereby reaches the level that changes distance-light control end with the object of output different light intensity.
Claims (1)
1. LED automobile front distance-light conversion control circuit, comprises interface protective circuit, constant-current drive circuit, great power LED circuit, distance-light control switching circuit; Described interface protective circuit, constant-current drive circuit, great power LED circuit connect successively; The input end of described distance-light control switching circuit is connected with interface protective circuit, great power LED circuit, and mouth is connected with constant-current drive circuit; It is characterized in that: described distance-light control switching circuit comprises the 5th resistance R 5, the 6th resistance R 6, a NPN type aerotron NPN1, the second metal-oxide-semiconductor Q2, the 3rd resistance R 3, the 4th resistance R 4; One end of the 6th described resistance R 6 is connected with the base stage of a NPN type aerotron NPN1; The one collecting electrode of NPN type aerotron NPN1 and one end of the 5th resistance R 5, the grid of the second metal-oxide-semiconductor Q2 are connected; The drain electrode of the second metal-oxide-semiconductor is connected with one end of the 3rd resistance R 3; The other end of the 3rd resistance R 3 is connected with one end of the 4th resistance R 4; The other end of the 4th resistance R 4 is connected with the source electrode of the second metal-oxide-semiconductor Q2, the emitter of a NPN type aerotron NPN1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450358.XU CN203974665U (en) | 2014-08-11 | 2014-08-11 | LED automobile front distance-light conversion control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450358.XU CN203974665U (en) | 2014-08-11 | 2014-08-11 | LED automobile front distance-light conversion control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203974665U true CN203974665U (en) | 2014-12-03 |
Family
ID=51972142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420450358.XU Expired - Fee Related CN203974665U (en) | 2014-08-11 | 2014-08-11 | LED automobile front distance-light conversion control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203974665U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105722279A (en) * | 2016-04-14 | 2016-06-29 | 海盐丽光电子科技有限公司 | Near-far light driving circuit for light emitting diode (LED) automobile lens |
| CN109862649A (en) * | 2017-11-30 | 2019-06-07 | 长城汽车股份有限公司 | A kind of car light driving method, car light driving device and vehicle |
| CN111688571A (en) * | 2020-07-02 | 2020-09-22 | 常州倍速智能科技有限公司 | Lighting device capable of realizing free switching of high beam and low beam |
-
2014
- 2014-08-11 CN CN201420450358.XU patent/CN203974665U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105722279A (en) * | 2016-04-14 | 2016-06-29 | 海盐丽光电子科技有限公司 | Near-far light driving circuit for light emitting diode (LED) automobile lens |
| CN109862649A (en) * | 2017-11-30 | 2019-06-07 | 长城汽车股份有限公司 | A kind of car light driving method, car light driving device and vehicle |
| CN109862649B (en) * | 2017-11-30 | 2021-03-09 | 长城汽车股份有限公司 | Vehicle lamp driving method, vehicle lamp driving device and vehicle |
| CN111688571A (en) * | 2020-07-02 | 2020-09-22 | 常州倍速智能科技有限公司 | Lighting device capable of realizing free switching of high beam and low beam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104210416B (en) | A kind of automobile daytime driving lamp system | |
| CN203974665U (en) | LED automobile front distance-light conversion control circuit | |
| CN206686410U (en) | A kind of automobile daytime driving lamp drive circuit | |
| CN201550329U (en) | Constant-current driving circuit of LED street lamp | |
| CN104175946B (en) | A kind of LED automobile headlight distance-light conversion control circuit | |
| CN204482074U (en) | A kind of automobile-used LED meeting pedal lamp | |
| CN203761662U (en) | LED lamp drive circuit | |
| CN204425746U (en) | Automobile brake lamp brightness regulating circuit | |
| CN105430798A (en) | Daytime running outline marker lamp system of motor vehicle | |
| CN202026504U (en) | Driving circuit of light emitting diode (LED) constant current source | |
| CN203731191U (en) | Multifunctional led desk lamp | |
| CN104089234B (en) | Wide-voltage-range LED automobile signal lamp | |
| CN103269540B (en) | Double-circuit complementary linear LED constant current circuit | |
| CN206807829U (en) | A kind of roam lamp control device | |
| CN204926527U (en) | Traffic signal lamp with adjustting of lighteness function | |
| CN204408687U (en) | A kind of novel infrared light supply drive circuit | |
| CN108093506B (en) | LED drive circuit for multiplexing daytime running light and position light | |
| CN205916026U (en) | Be applied to control structure ware of vehicle lamp | |
| CN204206543U (en) | A kind of LED glare light electric torch driving power circuit | |
| CN204795768U (en) | LED constant -current drive circuit | |
| CN204598402U (en) | Based on the LED sectional dimming power supply of power supply constant-current driven chip CSC8935 | |
| CN207744196U (en) | Automobile daytime running lights LED module control circuit | |
| CN103596314B (en) | An integrated circuit for a daytime running light and a steering light | |
| CN203104915U (en) | LED (light emitting diode) lamp intelligent controller | |
| CN103874266B (en) | Voltage follower circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20160811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |