CN205987464U - Intelligence car light control circuit - Google Patents
Intelligence car light control circuit Download PDFInfo
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- CN205987464U CN205987464U CN201620904503.6U CN201620904503U CN205987464U CN 205987464 U CN205987464 U CN 205987464U CN 201620904503 U CN201620904503 U CN 201620904503U CN 205987464 U CN205987464 U CN 205987464U
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
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Abstract
The utility model provides an intelligence car light control circuit, includes that LED driver chip U3, LED chip series parallel circuit, control chip U2, signal control end J3, inductance L1, MOS manage Q1, positive input terminal J1 and negative pole input J2, signal control end J3 is connected with the fuse, and control chip U2 holds J3 to acquire the current signal of fuse through signal control, and control chip U2's signal output part and LED driver chip U3's pin ADJ are connected. Utilize the fuse to acquire control signal, when opening vehicle unit, the fuse passes through the electric current, and output control signal controlled LED driver chip U3 after control chip U2 acquireed the current signal, and the car light that makes its drive increase is lighted. This intelligent control circuit wiring is simple, and the repacking is convenient moreover.
Description
Technical field
This utility model is related to car light, especially a kind of intelligent automotive light control circuit.
Background technology
The powerup issue that car light needs the problem solving to be car light is installed on automobile additional, because car light belongs to setting of increase
Standby, do not have spare interface in the automobile interface of script, so electrical equipment is increased on automobile need complicated wiring, very
To needing to change AUTOMOTIVE RELAY that increased car light is powered, so, undoubtedly increase the cost of repacking, Er Qieyou
Original circuit may be damaged.
Content of the invention
Technical problem to be solved in the utility model is to provide a kind of intelligent automotive light control circuit, and wiring is simple, repacking
Convenient.
For solving above-mentioned technical problem, the technical solution of the utility model is：A kind of intelligent automotive light control circuit, including
LED drive chip U3, LED chip series-parallel circuit, control chip U2, signal control end J3, inductance L1, metal-oxide-semiconductor Q1, positive pole are defeated
Enter to hold J1 and negative input J2；Described electrode input end J1 respectively with the positive pole of filter circuit and drawing of LED drive chip U3
Foot VIN connects, and described negative input J2 is connected with the negative pole of filter circuit；The negative pole of described LED chip series-parallel circuit leads to
The drain electrode crossing inductance L1 with metal-oxide-semiconductor Q1 is connected, and the grid of metal-oxide-semiconductor Q1 is connected with the pin GATE of LED drive chip U3, metal-oxide-semiconductor
The source ground of Q1, the anode of diode D2 is connected with the drain electrode of inductance L1 and metal-oxide-semiconductor Q1 respectively, the negative electrode of diode D2 with
The pin VIN of LED drive chip U3 connects；Described signal control end J3 is connected with electric fuse, and control chip U2 passes through signal control
End J3 processed obtains the current signal of electric fuse, and the signal output part of control chip U2 is connected with the pin ADJ of LED drive chip U3
Connect.Utility model works principle：Electrode input end J1 and negative input J2 is connected with the accumulator on car, and accumulator is direct
Supply electricity to LED driving chip U3 to drive the LED chip series-parallel circuit of car light to light；The guarantor being connected with signal control end J3
Dangerous silk is connected to vehicle switch electric fuse, during installation, only need to extract original electric fuse, and the electric fuse insertion by this circuit
?；This electric fuse could be for the positive pole controlling automobile equipment to open, and when opening this automobile equipment, electric fuse passes through electricity
Stream, after control chip U2 gets current signal, output control signal controls LED drive chip U3 so as to drive increased car light
Light.As improvement, described filter circuit is made up of electric capacity CE3 parallel with one another and electric capacity C4.Filter circuit makes LED drive core
The pin VIN of piece U3 powers more stable.
As improvement, described electrode input end J1 and negative input J2 are powered to control chip U2 by power module.
Power module control chip U2 provides stable voltage.
As improvement, the signal input part of described control chip U2 is connected with the base stage of audion T1, and audion T1 divides
It is not connected with the pin PWM0 of resistance R2, resistance R3 and control chip U2, the emitter stage of audion T1 is another with resistance R2 respectively
One end and ground connect, and the other end of resistance R3 is connected with the pin ADJ of LED drive chip U3.For preventing from exporting booting moment sudden strain of a muscle
Bright, transient state output suppression is formed by control chip U2 the 1st foot, audion T1 and resistance R2.
As improvement, described power module includes diode D1, resistance R1, electric capacity CE1, electric capacity C1, power supply chip U1, electricity
Hold CE2 and electric capacity C2, electrode input end J1 is passed sequentially through diode D1, resistance R1 and is connected with the input VI of power supply chip U1,
The positive pole of electric capacity CE2 and electric capacity C1 is connected with the input VI of power supply chip U1, and negative pole is connected with negative input J2, electric capacity
The positive pole of CE2 and electric capacity C2 is connected with the outfan V0 of power supply chip U1, and negative pole is connected with negative input J2.
As improvement, between the pin VIN and pin SNS of LED drive chip U3, it is provided with resistance R7 and R8 in parallel.Inductance
L1, metal-oxide-semiconductor Q1, diode D2, the negative pole of pin GATE and LED of LED drive chip U3 constitutes constant current output circuit, by adjusting
Current detection resistance R7 and R8, can set the current value of high accuracy and high stability, LED is current mode device, has electric current
By just lighting.
The beneficial effect that this utility model is compared with prior art brought is：
Obtain control signal using electric fuse, when opening automobile equipment, electric fuse passes through electric current, and control chip U2 obtains
To after current signal, output control signal controls LED drive chip U3 so as to drive increased car light to light.This Intelligent control electric
Road wiring is simple, and reequips conveniently.
Brief description
Fig. 1 this utility model circuit theory diagrams.
Specific embodiment
With reference to Figure of description, the utility model is described in further detail.
As shown in figure 1, a kind of intelligent automotive light control circuit, including LED drive chip U3, LED chip series-parallel circuit, control
Coremaking piece U2, signal control end J3, inductance L1, metal-oxide-semiconductor Q1, electrode input end J1 and negative input J2.Described positive pole input
End J1 is connected with the positive pole of filter circuit and the 6th pin VIN of LED drive chip U3 respectively, described negative input J2 and filter
The negative pole of wave circuit and ground connect；Described filter circuit is made up of electric capacity CE3 parallel with one another and electric capacity C4, and filter circuit makes
6th pin VIN of LED drive chip U3 powers more stable.The negative pole of described LED chip series-parallel circuit pass through inductance L1 with
The drain electrode of metal-oxide-semiconductor Q1 connects, and the grid of metal-oxide-semiconductor Q1 is connected with the 1st pin GATE of LED drive chip U3, the source electrode of metal-oxide-semiconductor Q1
Ground connection, the anode of diode D2 is connected with the drain electrode of inductance L1 and metal-oxide-semiconductor Q1 respectively, and the negative electrode of diode D2 drives core with LED
The 6th pin VIN of piece U3 connects；It is provided with resistance in parallel between 6th pin VIN of LED drive chip U3 and the 4th pin SNS
R7 and R8；Inductance L1, metal-oxide-semiconductor Q1, diode D2, the 1st pin GATE of LED drive chip U3 and LED strip parallel circuit negative
Pole constitutes constant current output circuit, by adjusting current sense resistor R7 and R8, can set the electric current of high accuracy and high stability
Value；LED strip parallel circuit includes some LED1 ~ LED12, and LED is current mode device, has electric current to pass through just can light.Described letter
Number control end J3 is connected with electric fuse, and the 13rd pin ADC3/P0.4 of control chip U2 passes through signal control end J3 and obtains insurance
The current signal of silk, the 1st pin P0.0/PWM3 of control chip U2 draws with the 3rd of LED drive chip U3 as signal output part
Foot ADJ connects.The signal input part of described control chip U2 is connected with the base stage of audion T1, audion T1 respectively with resistance
The 16th pin PWM0/P0.1 of R2, resistance R3 and control chip U2 connects, and the emitter stage of audion T1 is another with resistance R2 respectively
One end and ground connect, and the other end of resistance R3 is connected with the 3rd pin ADJ of LED drive chip U3；For preventing from exporting booting moment
Glittering, transient state output suppression is formed by control chip U2 the 1st foot, audion T1 and resistance R2.Described electrode input end J1 and negative
Pole input J2 is powered to control chip U2 by power module, and power module control chip U2 provides stable voltage.Described
Power module includes diode D1, resistance R1, electric capacity CE1, electric capacity C1, power supply chip U1, electric capacity CE2 and electric capacity C2, and positive pole is defeated
Enter to hold J1 to pass sequentially through diode D1, resistance R1 to be connected with the input VI of power supply chip U1, the positive pole of electric capacity CE2 and electric capacity C1
It is connected with the input VI of power supply chip U1, negative pole is connected with negative input J2, the positive pole of electric capacity CE2 and electric capacity C2 and power supply
The outfan V0 of chip U1 connects, and negative pole is connected with negative input J2.
Utility model works principle：Electrode input end J1 and negative input J2 is connected with the accumulator on car, electric power storage
Pond directly supplies electricity to LED drive chip U3 to drive the LED chip series-parallel circuit of car light to light；It is connected with signal control end J3
Electric fuse be connected to vehicle switch electric fuse, during installation, only original electric fuse need to be extracted, and the electric fuse by this circuit
Insert；This electric fuse could be for the positive pole controlling automobile equipment to open, and when opening this automobile equipment, electric fuse leads to
Overcurrent, after control chip U2 gets current signal, output control signal controls LED drive chip U3 so as to drive increase
Car light is lighted.
Claims (6)
1. a kind of intelligent automotive light control circuit it is characterised in that：Including LED drive chip U3, LED chip series-parallel circuit, control
Coremaking piece U2, signal control end J3, inductance L1, metal-oxide-semiconductor Q1, electrode input end J1 and negative input J2；Described positive pole input
End J1 is connected with the positive pole of filter circuit and the pin VIN of LED drive chip U3 respectively, described negative input J2 and filtered electrical
The negative pole on road connects；The negative pole of described LED chip series-parallel circuit is connected with the drain electrode of metal-oxide-semiconductor Q1 by inductance L1, metal-oxide-semiconductor Q1
Grid be connected with the pin GATE of LED drive chip U3, the source ground of metal-oxide-semiconductor Q1, the anode of diode D2 respectively with electricity
The drain electrode of sense L1 and metal-oxide-semiconductor Q1 connects, and the negative electrode of diode D2 is connected with the pin VIN of LED drive chip U3；Described signal control
End J3 processed is connected with electric fuse, and control chip U2 obtains the current signal of electric fuse, control chip U2 by signal control end J3
Signal output part be connected with the pin ADJ of LED drive chip U3.
2. a kind of intelligent automotive light control circuit according to claim 1 it is characterised in that：Described filter circuit is by mutually simultaneously
The electric capacity CE3 of connection and electric capacity C4 composition.
3. a kind of intelligent automotive light control circuit according to claim 1 it is characterised in that：Described electrode input end J1 and negative
Pole input J2 is powered to control chip U2 by power module.
4. a kind of intelligent automotive light control circuit according to claim 1 it is characterised in that：The signal of described control chip U2
Input is connected with the base stage of audion T1, the pin with resistance R2, resistance R3 and control chip U2 respectively of audion T1
PWM0 connects, and the emitter stage of audion T1 is connected with the other end of resistance R2 and ground respectively, and the other end of resistance R3 is driven with LED
The pin ADJ of chip U3 connects.
5. a kind of intelligent automotive light control circuit according to claim 3 it is characterised in that：Described power module includes two poles
Pipe D1, resistance R1, electric capacity CE1, electric capacity C1, power supply chip U1, electric capacity CE2 and electric capacity C2, electrode input end J1 passes sequentially through two
Pole pipe D1, resistance R1 are connected with the input VI of power supply chip U1, and the positive pole of electric capacity CE2 and electric capacity C1 is defeated with power supply chip U1's
Enter to hold VI to connect, negative pole is connected with negative input J2, the outfan V0 of the positive pole of electric capacity CE2 and electric capacity C2 and power supply chip U1
Connect, negative pole is connected with negative input J2.
6. a kind of intelligent automotive light control circuit according to claim 1 it is characterised in that：The pin of LED drive chip U3
It is provided with resistance R7 and R8 in parallel between VIN and pin SNS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620904503.6U CN205987464U (en) | 2016-08-19 | 2016-08-19 | Intelligence car light control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620904503.6U CN205987464U (en) | 2016-08-19 | 2016-08-19 | Intelligence car light control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205987464U true CN205987464U (en) | 2017-02-22 |
Family
ID=58031495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620904503.6U Expired - Fee Related CN205987464U (en) | 2016-08-19 | 2016-08-19 | Intelligence car light control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205987464U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793247A (en) * | 2016-11-23 | 2017-05-31 | 广州市佛达信号设备有限公司 | A kind of vehicle head lamp drive circuit |
| CN110996436A (en) * | 2019-12-17 | 2020-04-10 | 神龙汽车有限公司 | Control circuit for interior dome lamp |
-
2016
- 2016-08-19 CN CN201620904503.6U patent/CN205987464U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793247A (en) * | 2016-11-23 | 2017-05-31 | 广州市佛达信号设备有限公司 | A kind of vehicle head lamp drive circuit |
| CN106793247B (en) * | 2016-11-23 | 2018-08-21 | 广州市佛达信号设备有限公司 | A kind of vehicle head lamp driving circuit |
| CN110996436A (en) * | 2019-12-17 | 2020-04-10 | 神龙汽车有限公司 | Control circuit for interior dome lamp |
| CN110996436B (en) * | 2019-12-17 | 2022-04-29 | 神龙汽车有限公司 | Control circuit for interior dome lamp |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20190819 |