嵌入式双网冗余通信设计与实现  

Design and Implementation of Embedded Dual Redundant Network Communication

作　　者：周云水[1] 江波 李健 ZHOU Yunshui;JIANG Bo;LI Jian(Zhejiang College of Zhejiang University of Technology,Shaoxing Zhejiang 312030,China;Hangzhou Navigation Instrument Co.,Ltd,Hangzhou 310024,China)

机构地区：[1]浙江工业大学之江学院,浙江绍兴312030 [2]杭州航海仪器有限公司,杭州310024

出　　处：《电子器件》2018年第5期1296-1299,共4页Chinese Journal of Electron Devices

摘　　要：为提高UDP网络通信的可靠性,设计了一个基于STM32F429和W5500的嵌入式双网冗余UDP通信模块,硬件上设计了相互热备份双网冗余电路,软件上采用了时间片轮询方法,通过读取W5500状态数据发现网络故障,并设计了快速可靠的切换策略,实现了两路网络的切换,切换时间小于10 ms。该设备在实际应用过程中,工作稳定可靠。In order to improve the reliability of UDP communication,an embedded dual redundant network UDP communication module based on STM32F429 and W5500 was designed and implemented.The mutual hot backup dual redundant circuit was designed by hardware,and time slice polling method was applied in software.MCU found the network fault by reading the registers of W5500.A fast and reliable handover strategy was designed to achieve the handover between two networks,and the handoff time was less than 10 ms.It was stable and reliable when working in real environment.

关 键 词：嵌入式 双网冗余 UDP 时间片轮询 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]