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研究了CAN现场总线在铁路信号微机监测系统中的应用原理和具体实施方法 ,以改进现有微机监测系统数据通信性能。并重点介绍了智能化CAN总线通信适配卡 ,它作为该微机监测系统的核心 ,完成CAN总线的物理接口、低层通信协议和与PC机紧耦合式通信接口的实现
The application principle and specific implementation method of CAN field bus in railway signal microcomputer monitoring system are studied to improve the data communication performance of the existing microcomputer monitoring system. And emphatically introduces the intelligent CAN bus communication adapter card, which serves as the core of the microcomputer monitoring system to complete the CAN bus physical interface, low-level communication protocol and the realization of tightly coupled communication interface with the PC