基于RS485总线的GSM-R从机故障检测设计及实现OA
The design and implementation of GSM-R slave device fault detection based on RS485 bus
RS485总线经常被用做主从系统各节点间的通信方式,系统中主从机的通信状态是整个系统正常工作的前提.文章设计了一种基于RS485总线的从机故障检测方法.首先根据需求设计了一套稳定的网络通信协议和接口函数,并提出了一种基于RS485网络通信协议的轮询方法,可实现一个主机可靠、稳定地轮询访问多个从机.主机能够检测各个从机的通信状况,并及时将从机通信故障信息上报到上位机.文章提出的在轮询基础上进行故障检测的方法,大大提高了系统的实时性.
RS485 bus is often used as the communication means between the nodes of master-slave system, the communication state of devices is the premise in the system.In this paper, a slave device fault detection method based on RS485 bus is proposed.Firstly, a stable network communication protocol and interface function are designed according to the demand.Then, a polling mechanism based on RS485 network communication protocol is presented, which makes the master dev…查看全部>>
贾海航;赵霞
同济大学 电子与信息工程学院,上海 201804同济大学 电子与信息工程学院,上海 201804
计算机与自动化
RS485轮询故障检测
RS485pollingfault detection
《微型机与应用》 2017 (7)
1-4,8,5
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