汽车大灯远近光自动切换系统

驾驶员行车时,难免会出现会车和上下坡的情况。特别是汽车在夜间行驶时,相向而行的汽车灯光和上下坡时路面的反射光会影响驾驶员的视觉,如果太强就会造成驾驶员看不清前方道路,所以需要驾驶员及时地手动切换汽车的远近光,如果切换不及时,就可能造成交通事故。本文采用Atmel公司的ATmega16单片机设计了一款汽车大灯远近光自动切换系统。采用光敏三极管作为光强检测传感器,并自行设计了坡度检测传感器。当汽车在会车或者上下坡时,如果射入人眼的光强超过（低于）一定值或者坡度角大于（小于）一定角度,此系统就会自动切换成近（远）光。

Auto switching system for vehicle headlights

When the drivers are driving,they will inevitably come across other cars,acclivities and declivities.When driving at night,strong light glares into the drivers' eyes due to meeting each other halfway with the car lights on and the road reflection,which may cause the drivers to see the road ahead unclearly.In this case the drivers need to manually switch the type of the cars' headlights in time.But sometimes the drivers don't have enough time to accomplish that action,which results in traffic accidents.For t...