数字调光技术在驾驶舱照明系统中应用分析

摘要

数字调光技术其原理是结合改变流经LED光源电流方式和PWM调光技术。充分利用这两种调光技术的优点，规避其缺点。然后运用CAN总线传输调光信号的方式，大大减少了电缆数量和重量，同时也避免了PWM信号长距离传输的电磁干扰问题。是目前LED光源理想调光技术之一。%The digital dimming technology takes full advantage of two kinds of technologies:one is altering the way of the current through the LED light source and the other is PWM dimming technology.By integrating them,it uses CAN bus to transfer the dimming signal.As an ideal method,the digital dimming technology is beneficial to reduce the amount of cables and consequently gain the weight saving. Besides,the EMI due to the long range transmission can be avoided.