激光成像的汽车安全距离自动检测系统

Automatic detection system of safety distance based on laser imaging

当前汽车安全距离自动检测系统存在各有不足,利用激光成像技术优点,设计了激光成像的汽车安全距离自动检测系统。采用激光测距仪采集汽车与障碍物之间的距离数据,并通过激光发送装置和通信总线传入信号调制器,然后信号调制器估计汽车与障碍物之间的相对速度,并反馈给激光测距仪,根据时间检测安全距离是否合理,最后将目标安全距离及其相对速度展示在显示屏上。实验结果表明,该系统的测距误差低于1%的,可以满足实际应用要求。

Automatic detection system has some defects. So a new automatic detection system of automobile safety distance is designed based on laser imaging technology. Distance data is obtained between cars and obstacles by laser rangefinder. They are input to signal modulator through laser transmitting device and communication bus, and then the relative speed between vehicle and obstacles is estimated, and feedback to laser rangefinder. Finally, safety distance and relative velocity of target are displayed on the screen according to detection time of safety distanee. Experimental results show that the system＇ s ranging error is less than 1%, which can meet the practical application requirements.