激光雷达用于无人自动驾驶车辆的避撞和定位导航,该智能接口卡用UART采集激光雷达数据,通过CAN总线传输给上位机实现无人自动驾驶车辆复杂的定位导航,同时在DSP的数据处理中实现车辆的自动避撞,保证车辆安全。本文介绍了此接口卡的硬件和软件设计,实践证明,该卡能在500kbps波特率下可靠实现车辆避撞处理和实时数据传输。 Lidar is used for collision avoidance and positioning navigation of unmanned autonomous vehicles. The smart interface card uses the UART to collect Lidar data and transmits it to the host computer through CAN bus to realize the unmanned automatic driving vehicle’s complicated positioning and navigation. At the same time, Processing to achieve automatic collision avoidance of vehicles to ensure vehicle safety. This paper introduces the hardware and software design of this interface card. The practice proves that the card can reliably avoid collision avoidance and real-time data transmission at a baud rate of 500kbps.