基于EPA的功能安全通信方法研究和实现  

Research and Achieve of the Function Safety Communications Methods Based on EPA

作　　者：王浩[1] 王彦邦[1] 王平[1] 

机构地区：[1]重庆邮电大学网络化控制与智能仪器仪表教育部重点实验室,重庆400065

出　　处：《自动化与仪表》2010年第1期21-24,60,共5页Automation & Instrumentation

基　　金：国家863计划项目(2006AA040301-7);重庆邮电大学博士启动基金(A2008-09)

摘　　要：在研究EPA协议栈的基础上,分析了工业控制网络的通信故障与功能安全机制的对应关系,描述了功能安全典型系统体系,建立了功能安全通信协议模型,设计了EPA功能安全通信过程,开发了EPA功能安全扩展协议层软件。测试结果表明,通过在EPA应用层中增加EPA功能安全应用访问实体以及将EPA通信报文中的用户数据单元进行扩展来实现关键安全措施,从而满足了安全相关领域通信的要求,保障了EPA系统的安全性和可靠性。In this paper, EPA protocol stack in the study, based on the analysis of industrial controlling networks, communication failures and function of the relationship between security mechanism proposed functions safety communication protocol model, the establishment of a typical functional safety system designed for safety communication functions EPA process, the realization of the EPA to expand the functional safety protocol layer. Test results show that the EPA through the application layer has been added to EPA functional entities, as well as security applications will visit EPA communications in the packet data unit to carry out the expansion of users to achieve key safety measures to meet the safety requirements of communications related fields to protect the EPA system safety and reliability.

关 键 词：EPASafety 功能安全通信 IEC61 508 IEC61784—3 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]