基金会现场总线(FFH1)关键方案研究  

Research on the key scheme of Foundation Fieldbus (FFH1)

作　　者：冯潇 邹洪伶 张博 马敬 FENG Changxiao;ZOU Hongling;ZHANG Changbo;MA Changjing(China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China)

机构地区：[1]中国核电工程有限公司,北京100840

出　　处：《自动化与仪器仪表》2024年第6期305-308,共4页Automation & Instrumentation

摘　　要：为了解决基金会现场总线(FF H1)在实际工程设计及应用中的关键技术问题,针对FF H1总线的传输特征,在给出总线供电方式的基础上,通过对消耗电流、电压的包络性计算,提出了总线电源设计方法,基于防爆分区研究了危险场合的现场仪表选型方法,并进一步给出了FNICO体系下的总线供电方案。分析比较了FF H1总线支持的几种拓扑结构形式及优劣性,讨论了实际应用中建议的功能分配方式,给出了项目实际选取的拓扑结构、电缆长度、挂接仪表数量、宏周期时间的参考值。提出的设计方法已经在某大型核燃料后处理工程现场总线控制系统中应用,调试及运行结果表明各项设计方案合理可行,满足运行需求。本文给出的各项关键方案可为后续FF H1总线结构设计提供参考。In order to address the key technical issues of the Foundationfieldbus in engineering applications,based on the transmission characteristics of the FF H1 bus,a bus power supply design method was proposed by calculating the envelope of the consumed current and voltage.Based on explosion-proof zoning,a selection method for field instruments in hazardous situations was studied,and a bus power supply scheme under the FNICO system was further proposed.Analyzed and compared several topological structure forms supported by FF H1 bus and their advantages and disadvantages,discussed the recommended function allocation methods in practical applications,and provided reference values for the actual selected topological structure,cable length,number of connected instruments,and macro cycle time of the project.The proposed design method has been applied in the field bus control system of a large nuclear chemical engineering project,and the debugging and operation results show that each design scheme is reasonable and feasible,meeting the operational requirements.The key solutions presented in this article can provide reference for the subsequent FF H1 bus structure design.

关 键 词：基金会现场总线 供电 防爆 冗余 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]