CN207150895U - A kind of LED car lamp controller - Google Patents
A kind of LED car lamp controller Download PDFInfo
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- CN207150895U CN207150895U CN201720889048.1U CN201720889048U CN207150895U CN 207150895 U CN207150895 U CN 207150895U CN 201720889048 U CN201720889048 U CN 201720889048U CN 207150895 U CN207150895 U CN 207150895U
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- led
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- lamp controller
- car lamp
- temperature feedback
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Abstract
It the utility model is related to car light control technology field, a kind of more particularly to LED car lamp controller, including LED drive unit, control unit, LED control circuit, temperature feedback unit and LED module, LED drive unit is connected with control unit by spi bus, LED drive unit is used to drive LED module, the temperature feedback of the LED module detected is controlled LED module by temperature feedback unit to LED drive unit, control unit by LED control circuit.The utility model control is flexible, has more eye-catching prompting effect, to improve the security of driving, simple in construction, cost is low, prevents car light from overheating by temperature feedback unit, effectively extends the service life of car light.
Description
Technical field
It the utility model is related to car light control technology field, more particularly to a kind of LED car lamp controller.
Background technology
It is also more and more as the case of automotive luminaire using LED on automobile with the continuous progress of LED light source technology,
There is corresponding product to powerful fog lamp, headlamp from low power steering indicating light, illuminating lamp.And automobile industry is increasingly
Development, the meaning present in car light not merely simply illuminate this, and people are increasing to car light to require it is car light
Variation and mobilism.
Current traditional car light is more a string a string of bright light, can not individually be controlled, and cannot control bright light
Time and brightness.Single bright light, easily pedestrian is given to produce a visual fatigue, it is without what too many to evading accident
Instruction and reminding effect.
A kind of controller of car light order light on and off is proposed in Publication No. CN205356731U Patent Cases.But the program has
It is clearly disadvantageous.The deficiency of the program is that its circuit is a kind of parallel circuit, and the total current of parallel circuit can be larger.And
It is limited per LED current all the way under parallel circuit, so as to limit LED lumen value；The deficiency of the program is to work as vehicle mounted electric
It is pressed between 9V-16V when fluctuate, the current value of the resistance-type circuit has larger fluctuation；The deficiency of the program is electricity
The circuit of resistive, larger temperature drift is had, and the circuit is without thermistor feedback circuit.
Utility model content
The utility model provides a kind of simple in construction, flexible LED car lamp controller of control mode.
In order to realize the purpose of this utility model, used technical scheme is：A kind of LED car lamp controller, including LED
Driver element, control unit, LED control circuit, temperature feedback unit and LED module, LED drive unit and control unit pass through
Spi bus is connected, and LED drive unit is used to drive LED module, and temperature feedback unit is anti-by the temperature of the LED module detected
Feed LED drive unit, control unit controls LED module by LED control circuit.
As prioritization scheme of the present utility model, LED drive unit is LED drive chip, and control unit is MCU chip,
LED control circuit is metal-oxide-semiconductor, and temperature feedback unit is thermistor NTC, and LED module includes the LED of more series connection.
As prioritization scheme of the present utility model, the single I/O pin of MCU chip is connected with the grid of single metal-oxide-semiconductor, MOS
The drain electrode of pipe is connected with the positive pole of single LEDs.
As prioritization scheme of the present utility model, MCU chip controls metal-oxide-semiconductor to adjust the bright of LED by generating pwm signal
Degree.
As prioritization scheme of the present utility model, to control, LED's is bright by controlling the ON-OFF of metal-oxide-semiconductor for MCU chip
Go out.
As prioritization scheme of the present utility model, MCU chip controls LED switch time by the timer of itself.
As prioritization scheme of the present utility model, thermistor NTC is driven by detecting the temperature of LED module to adjust LED
The output current of dynamic chip.
As prioritization scheme of the present utility model, power supply provides power supply by LDO voltage stabilizer for control unit.
The utility model has positive effect：1) the utility model, which has, can make each LEDs of car light independent
Control, and LED brightness can be controlled, it can so make car light that there is certain eye-catching effect；The utility model has can be suitable
Sequence control car light light on and off function, can be lighted with one one, can also one one knock out, so that car light has certain
Indicative function；The utility model has the function for the cycle dynamicses that can freely control LED bright lights, such as under different speeds
There are different cycle dynamicses, have more eye-catching prompting effect, to improve the security of driving；
2) the utility model is simple in construction, and cost is low, prevents car light from overheating by temperature feedback unit, effectively extends
The service life of car light.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is theory diagram of the present utility model；
Fig. 2 is circuit theory diagrams of the present utility model.
Wherein：1st, LED drive unit, 2, control unit, 3, LED control circuit, 4, temperature feedback unit, 5, LED module.
Embodiment
As shown in Figure 1-2, the utility model discloses a kind of LED car lamp controller, including LED drive unit 1, control list
Member 2, LED control circuit 3, temperature feedback unit 4 and LED module 5, LED drive unit 1 and control unit 2 pass through spi bus phase
Even, LED drive unit 1 is used to drive LED module 5, temperature feedback unit 4 by the temperature feedback of the LED module 5 detected to
LED drive unit 1, control unit 2 control LED module 5 by LED control circuit 3.LED drive unit 1 and control unit 2 are logical
Cross spi bus to be connected, ensure that the synchronism of signal transmission.
LED drive unit 1 is LED drive chip, and control unit 2 is MCU chip, and LED control circuit 3 is metal-oxide-semiconductor, temperature
Feedback unit 4 is thermistor NTC, and LED module 5 includes the LED of more series connection.Wherein, LED drive chip is constant current driving
Chip.LED Driver are LED drive chip in Fig. 2, and MCU is MCU chip, and MOSFET-N is metal-oxide-semiconductor.
The single I/O pin of MCU chip is connected with the grid of single metal-oxide-semiconductor, the drain electrode of metal-oxide-semiconductor and the positive pole phase of single LEDs
Even.
MCU chip controls metal-oxide-semiconductor to adjust LED brightness by generating pwm signal.Pwm signal is transmitted to the grid of metal-oxide-semiconductor
Extremely adjust LED brightness.
MCU chip controls LED light on and off by controlling the ON-OFF of metal-oxide-semiconductor.According to certain logic, multiple LED
Order light on and off can be completed.
MCU chip controls LED switch time by the timer of itself.So as to complete the control of LED cycle dynamicses
System.
Thermistor NTC adjusts the output current of LED drive chip by detecting the temperature of LED module 5.Pass through regulation
The output current of LED drive chip, prevent from overheating, protect LED module 5.
Power supply is that control unit 2 provides power supply by LDO voltage stabilizer.In Fig. 2, LDO is LDO voltage stabilizer.
Power supply is that control unit 2 provides supply voltage by LDO voltage stabilizer.The utility model provides a kind of control
Dynamic time, the car light control mode of dynamic brightness, by lighting single LEDs in order, lighting for LED in car light can be controlled
Sequentially, for example, car light can be used for representing the side that automobile will travel by bright with regular hour cycle sequences light on and off to going out
To, and this time cycle, it can be adjusted flexibly within the allowed band of regulation, so as to produce an eye-catching effect
Fruit, prevent the pedestrian on road or the driving vehicle on road from producing visual fatigue, while show also the direction of running car, side
Just pedestrian or vehicular traffic make anticipation in advance.LED in car light can be lit with one one, can also a quilt
Knock out.
This car light controller controls the grid of metal-oxide-semiconductor by MCU chip, and can individually be controlled by then completing by each
LED；LED brightness can freely be controlled；Can be with sequential control LED light on and off；The cycle dynamicses of LED bright lights can be controlled.
Particular embodiments described above, the purpose of this utility model, technical scheme and beneficial effect are carried out to enter one
Step describes in detail, should be understood that and the foregoing is only specific embodiment of the utility model, is not limited to this
Utility model, it is all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements done etc., it all should wrap
It is contained within the scope of protection of the utility model.
Claims (8)
- A kind of 1. LED car lamp controller, it is characterised in that：Including LED drive unit (1), control unit (2), LED control circuit (3), temperature feedback unit (4) and LED module (5), described LED drive unit (1) and control unit (2) pass through spi bus It is connected, described LED drive unit (1) is used to drive LED module (5), and described temperature feedback unit (4) is by what is detected The temperature feedback of LED module (5) gives LED drive unit (1), and described control unit (2) is controlled by LED control circuit (3) LED module (5).
- A kind of 2. LED car lamp controller according to claim 1, it is characterised in that：Described LED drive unit (1) is LED drive chip, described control unit (2) are MCU chip, and described LED control circuit (3) is metal-oxide-semiconductor, described temperature Feedback unit (4) is thermistor NTC, and described LED module (5) includes the LED of more series connection.
- A kind of 3. LED car lamp controller according to claim 2, it is characterised in that：The single I/O pin and list of MCU chip The grid of individual metal-oxide-semiconductor is connected, and the drain electrode of metal-oxide-semiconductor is connected with the positive pole of single LEDs.
- A kind of 4. LED car lamp controller according to claim 3, it is characterised in that：MCU chip is by generating pwm signal Metal-oxide-semiconductor is controlled to adjust LED brightness.
- A kind of 5. LED car lamp controller according to claim 3, it is characterised in that：MCU chip is by controlling metal-oxide-semiconductor ON-OFF controls LED light on and off.
- A kind of 6. LED car lamp controller according to claim 3, it is characterised in that：The timer that MCU chip passes through itself To control LED switch time.
- A kind of 7. LED car lamp controller according to claim 3, it is characterised in that：Thermistor NTC is by detecting LED The temperature of module (5) adjusts the output current of LED drive chip.
- A kind of 8. LED car lamp controller according to claim 1, it is characterised in that：Power supply is by LDO voltage stabilizer Control unit (2) provides power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720889048.1U CN207150895U (en) | 2017-07-20 | 2017-07-20 | A kind of LED car lamp controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720889048.1U CN207150895U (en) | 2017-07-20 | 2017-07-20 | A kind of LED car lamp controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207150895U true CN207150895U (en) | 2018-03-27 |
Family
ID=61676290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720889048.1U Active CN207150895U (en) | 2017-07-20 | 2017-07-20 | A kind of LED car lamp controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207150895U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108575011A (en) * | 2017-07-20 | 2018-09-25 | 常州星宇车灯股份有限公司 | A kind of LED car lamp controller |
| CN110191537A (en) * | 2019-05-27 | 2019-08-30 | 常州星宇车灯股份有限公司 | Car light overheat protector system, the vehicle with it and car light excess temperature protection method |
-
2017
- 2017-07-20 CN CN201720889048.1U patent/CN207150895U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108575011A (en) * | 2017-07-20 | 2018-09-25 | 常州星宇车灯股份有限公司 | A kind of LED car lamp controller |
| CN110191537A (en) * | 2019-05-27 | 2019-08-30 | 常州星宇车灯股份有限公司 | Car light overheat protector system, the vehicle with it and car light excess temperature protection method |
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