基于CAN总线的铁路车站通信系统的研究和设计

CAN总线是一种广泛应用于工业控制中的现场总线,AVR系列单片机作为一种微控制器,其应用也变的越来越广泛。通过介绍CAN总线技术的特点,研究了CAN总线通信节点的设计方案,给出了具体的硬件设计方案和软件流程,比较了CAN总线与RS 485总线在通信距离、实时性、可靠性及灵活性等方面的优缺点,并介绍了CAN总线通信在车站通信系统中的具体应用。通过实践证明,CAN总线在车站通信系统中具有良好的实用价值,为铁路信号系统的技术升级奠定了坚实的基础。

Design of railway station communication system based on CAN-bus

CAN-bus （controller area network bus） is a field bus which is widely used in industrial control. As a microcon- troller, AVR SCM and its applications are becoming more and more widespread. The design scheme of CAN-bus communication node is studied by means of the characteristic introduction of CAN-bus technology. The specific hardware design scheme and soft- ware processes are offered in this paper, compares The advantages and disadvantages in the aspects of communication distance, real-time performance, reliability and flexibility between CAN-bus and RS-485 bus. The specific application of CAN-bus technol- ogy in the railway station communication system is introduced. The practical application proves that the CAN-bus has a good practical value in the railway station communication system, which lays a solid foundation for the technological upgrade of the railway signaling system.