数字化仪控平台冗余控制器数据同步方法研究  

Research on Data Synchronization Method of Redundant Controller in Digital I&C Platform

作　　者：伍巧凤 王琳 张隽祺 吴坤任 孙诗炎 李昱 WU Qiaofeng;WANG Lin;ZHANG Junqi;WU Kunren;SUN Shiyan;LI Yu(Science and Technology on Reactor System Design Technology Laboratory,Chengdu 610213,China)

机构地区：[1]核反应堆系统设计技术重点实验室,成都610213

出　　处：《自动化仪表》2021年第S01期94-96,100,共4页Process Automation Instrumentation

摘　　要：数字化仪控平台冗余控制的前提之一是数据同步。针对数字化仪控平台冗余控制器构架,提出一种数据同步方法。该方法利用控制器自带的PC104-Plus总线扩展出一片数据区域,用于冗余控制器之间交互数据;通过现场可编程门阵列(FPGA)芯片实现数据发送和接收,数据同步过程全自动进行,无须用户软件参与。数据传输介质采用冗余光纤,速度快、可靠性高。在控制中心快速响应的情况下,将1 KB数据从主控制器同步到备用控制器的时间不超过8μs。该方法具有数据同步时间短、传输可靠、对用户软件透明、输出扰动小等优点。该方法应用范围可扩展至构建冗余光纤通信网络。Data synchronization is one of the preconditions of redundancy control of digital instrumentation and control platform.Aiming at architecture of digital instrumentation and control platform,a data synchronization method is proposed.In this method,PC104-Plus bus is used to expand a data area for data exchange adopted in redundant controller,data transmission and reception are realized by field programmable gate array(FPGA)chip,and the data synchronization process is automatically operated without the participation of user software.Redundant optical fiber is used for data transmission with high speed and high reliability.In case of quick response of control center,the time to synchronize 1 KB data from the main controller to the standby controller is less than 8μs.The method has the advantages of short data synchronization time,reliable transmission,transparent to user software and small output disturbance.The application scope of this method can be extended to build up redundant optical fiber communication network.

关 键 词：数字化仪控平台 冗余技术 PC104-Plus总线 数据同步 光纤通信 现场可编程门阵列 热备份 可靠性 

分 类 号：TH-39[机械工程]