基于单片机的铁路道口报警系统

Railway Crossing Warning System Based on Single Chip Microcomputer

本课题主要研究的是在单片机控制下实现铁路道口的安全报警系统。系统采用MC9S12XS128MAA单片机为平交道口自动报警系统的控制核心,通过安装在离道口不远处的铁路两旁的红外对射传感器检测点,感应到车厢信息形成检测序列,经过信号处理用CAN总线通信协议进行数据传输,单片机接收到数据,经处理后控制道口交通灯以及语音报警模块,来提醒过路行人和车辆。同时道口栏木自动关闭确保过往行人及车辆的安全。列车驶离道口后,系统会自动打开栏木并停止报警,保持道口畅通。

This artilce discusses the realization of railway crossing safety alarm system based on single chip microcomputer. The system uses MC9S12XS128MAA microcontroller as the control core for the crossing automatic warning system, and gets the coming vehicles message induced by the infrared correlation sensor check points, which installed on both side of the railway not far from the crossing. After signal processing ,the data can be transferred with CAN bus con^nunication protocol. Single chip microcomputer uses the received data to control the crossing traffic lights and the voice alarm module it can remind passers-bys and the vehicles. At the same time,the crossing gate shut down automatically to ensure the safety of pederstrians and vehicles. After the train left, the system control the gate to open and stop the alarm to keep clear of the crossing.