基于openSAFETY的功能安全通信协议研究  

Research on Functional Safety Communication Protocol Based on OpenSAFETY

作　　者：徐建明[1,2] 周家豪 陈琳 金瑶 周路顺 张扬扬 XU Jianming;ZHOU Jiahao;CHEN Lin;JIN Yao;ZHOU Lushun;ZHANG Yangyang(College of Information Engineering,Zhejiang University of Technology,Hangzhou 310023,China;Hangzhou Liwei Technology Co.,Ltd.,Hangzhou 311400,China)

机构地区：[1]浙江工业大学信息工程学院,杭州310023 [2]杭州力为科技有限公司,杭州311400

出　　处：《计算机测量与控制》2024年第10期228-235,共8页Computer Measurement &Control

基　　金：国家自然科学基金面上项目(61374103)。

摘　　要：针对数据传输可靠性低导致功能安全事故频发的问题,进行了基于POWERLINK的openSAFETY功能安全通信协议研究;在实时工业以太网协议POWERLINK的基础上设计了以PCP-AP为架构的openSAFETY安全节点,设计了基于FPGA软核处理器的POWERLINK内核层的软件硬件结构,设计了基于单片机MCU的openSAFETY安全应用接口程序以及近底层通信接口程序,搭建了以贝加莱PLC为安全控制节点的功能安全通信实验平台,依据故障分析设计了电磁干扰实验,模拟了工业现场中出现不同程度电磁干扰情况下功能安全通信平台的通信情况,并与非功能安全通信平台进行对比,验证了安全节点的可靠性和必要性。Aiming at the problem of frequent functional safety accidents caused by low reliability of data transmission,this paper studies an openSAFETY functional safety communication protocol based on POWERLINK,presents an openSAFETY node with the PCP-AP architecture based on the real-time industrial Ethernet protocol POWERLINK,designs software and hardware structure of POWERLINK kernel layer based on FPGA soft-core processor,achieves the openSAFETY safety application interface program and the near bottom communication interface program based on MCU,and builds a functional safety communication experimental platform with B&R PLC as the safety control node.The electromagnetic interference experiment is designed according to the fault analysis,the communication situation of the functional safety communication platform is simulated in different degrees of electromagnetic interference in industrial fields,and compared with the non-functional safety communication platform,this platform verifies the reliability and necessity of the safety node.

关 键 词：功能安全 工业以太网 openSAFETY POWERLINK 电磁干扰 FPGA 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术]