基于CSS技术的列车辅助防撞系统设计与研究

Design and Research of Train Auxiliary Collision Avoidance System Based on CSS Technology

城市轨道交通列车在运行过程中,由列车自动保护系统ATP(Automatic Train Protection)来保障所有列车的运行安全。在ATP系统失效时,列车由自动防护控制转换为人工控制,在这种情况下,由于缺乏设备层面的安全保障,运营人员疏忽或误操作将会大大增加列车碰撞的风险。基于线性调频扩频(CSS)测距技术,运用SDSTWR算法,研究并设计出适用于人工驾驶模式下的列车辅助防撞系统,提高了城市轨道交通运行的安全性与可靠性。

During the operation of urban rail transit trains,the Automatic Train Protection system(ATP)ensures the safety of all trains.When the ATP system fails,the train will be transferred from automatic protection control to manual control.In this case,due to the lack of safety guarantee from equipment,the operator’s negligence or misoperation will greatly increase the risk of train collision.Based on the Chirp Spread Spectrum(CSS)ranging technology and the SDS-TWR algorithm,this paper has researched and designed the auxiliary collision avoidance system,which is suitable for manual driving mode,and can improve the security and reliability of urban rail transit operation.