基于旋转编码器的汽车油门误踩检测

Detection of the Mistaken Pressing Accelerator Pedal based on Encoder

将车辆油门当作刹车误踩,常带来严重后果。对汽车油门误踩进行检测,为保证车辆行驶安全提供基础。利用安装于踏板轴上的旋转编码器检测油门踏板的下踩速度和踏板位置,对车辆速度进行采样,利用相邻采样时刻的速度差和采样周期计算车辆的加速度。在油门踏板的下踩速度和到达位置超过阈值时,或者车辆的加速度超过阈值时,认为油门踏板误踩。利用单片机设计了检测系统,并进行了模拟实验。模拟实验表明,该检测系统逻辑正确,实时性好。该系统能够快速准确的实现油门踏板误踩检测。

Terrible traffic accident may occur if a driver presses the accelerator pedal of a vehicle by mistake. The mistaken pressing is detected in this paper in order to provide supports for driving security. The pressing speed and the position of the accelerator pedal are measured with an eneoder connecting with the panel axis. The vehicle＇ s velocity is sampled to compute its acceleration with the adjacent samples and interval. Once the pressing speed and position of the accelerator pedal are exceed the given thresholds or the vehicle＇ s acceleration is greater than the specified threshold, the accelerator pedal is considered to be pressed by mistake. A detection system is developed with a single - chip -computer. The imitate experiments are well conduct on the system. The experimental results show that the detecting system has right logic and good performance in real -time. The mistaken pressing can be quickly and correctly detected with the developed system.