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汽车氛围灯是一种具有装饰和创建各种室内灯光场景功能的汽车室内照明系统,基于触摸按键和可以调色的LED汽车氛围灯将会在汽车上得到广泛的应用。本文先介绍了电容式触摸按键和采用脉冲宽度调制(PWM)方式进行三基色LED配色控制的基本原理,然后基于这两种技术,设计实现了这样一种汽车氛围灯,通过操作触摸按键可以进行调光配色并可以记录当前场景,下次启动时自动切换到上次保存的场景,最后对产品的技术特性进行了总结,并对该类产品的技术发展趋势及市场前景进行了展望。
Automotive Ambient Light is an automotive interior lighting system that has the function of decorating and creating various indoor lighting scenes. LED automotive ambience light based on touch buttons and tinting will be widely used in automobiles. This paper first introduced the capacitive touch keys and the use of pulse width modulation (PWM) for the trichromatic LED color control of the basic principles, and then based on these two technologies, the design and implementation of such a car ambient light, by operating the touch button can be Dimming color and can record the current scene, the next start automatically switch to the last saved scene, the last of the technical characteristics of the product were summarized, and the technical development trend of such products and market prospects.