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汽车头灯Cornering light改装设想

(2017-03-21 21:25:31) 下一个

BMW关于cornering light的定义:

Cornering lights.

Cornering lights provide additional illumination of the area to the side of the vehicle, making night-time parking and turning safer.

Cornering lights compliment the functionality of Adaptive Headlights. While Adaptive Headlights provide superior illumination of curves when driving at normal speeds, cornering lights give you better lighting when carrying out low-speed manoeuvres: parking, turning into a driveway, u-turns and taking extremely winding roads, for example. 
To provide this additional light, the fog lamps are fitted with integrated swivelling reflectors; alternatively, the headlights are equipped with an additional lamp. When the indicator is activated at speeds below 40 km/h, these lights illuminate an area to the side of the vehicle, up to 80° of the direction of travel.
After the corner is taken, the cornering lights dim and extinguish automatically. Cornering lights also facilitate safe reversing: when reverse gear is selected, both the left and right lights illuminate the area around the vehicle.

改装思路:

方案一:从turn signal switch或 turn signal flasher relay取电使用继电器激活一侧雾灯,难点是两者的位置和左右如果判别,优点是启动继电器电压是恒定12V只是连线和普通继电器即可。

方案二:从turn signal bulb取电,优点是好接线,缺点是启动继电器电压非恒定,需要使用12V延时继电器保持在闪灯期间稳定的电压供给。缺点是过大的电容和过短的通电不能保证电容有效充电或导致转向灯工作失稳。

倾向方案二使用延时继电器timer  relay或自制延时电路控制普通继电器

自制控制电路:二极管,电阻,电容及继电器

使用延时继电器模块

Risym导通延时12V继电器模块 单稳态开关/汽车电器延时0-10秒可调

Risym 12V延时继电器模块 汽车启动延时开关器带光耦信号触发延时

这种改装可能会存在一个的问题就是从转向灯取电由于电流不足而导致转向灯不能正常工作,且较短的通电不能有效保证电容充电,那个电容越大延时越长吸掉的电量【流】越多,所以减少延时时间如2秒有助于消除这种缺陷。

 

睡了一觉想起一件事,大白天这么样是不是有点搞?

如果在近光灯加电时再启动上述功能,这样就是在开启这个角灯辅助功能前增加了一个条件,也即当且仅当近光灯启动后才会触发角灯开启功能,至于实现起来就比较简单了,在延时继电器前端再增加一个有近光灯触发的继电器不就结了!哈哈嘻嘻鬼脸加油

 

 

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