基于加速度的汽车刹车灯控制器设计

Design of the vehicle brake light controller based on acceleration

为了使汽车刹车灯给后车提供刹车深度的信息,根据最新实施的国家标准选装紧急制动指示装置要求,采用单片机+加速度传感器的模式,设计了一种基于减速程度的刹车灯控制器。将减速度分为紧急刹车,中度刹车和轻度刹车3种状态,并给出不同频率的闪烁灯光,提醒后车注意。控制器直接串接于原车刹车灯的驱动线中,安装方便、可靠,它对避免汽车被追尾有较大的实用价值。

In order to provide brake depth to the rear vehicles,according to the requirement of national standards for emergency braking device which implemented latest, we design a brake light controller based on the vehicle deceleration degree using the MCU ＋ acceleration sensor model which classifies the speed into three statuses- emergency braking, medium braking and light braking, and it gives different frequencies of flashing lights to alert the rear vehicles. The controller connect to the original car driving line of brake lights directly, it＇s reliable, easy to install,and it creates significant and practical values on avoiding rear-end collision.