作者：承　维（1985-），男，北京人，嵌入式系统设计师，硕士，现就职于北京广利核系统工程有限公司，主要从事核电DCS主控嵌入式软件研发工作；

马建新（1976-），女，河北人，高级工程师，学士，现就职于北京广利核系统工程有限公司，主要从事数字化仪控系统研发工作。

摘要：核电站DCS现场控制站是核电站控制系统的核心设备，其主要功能为现场信号的采集、运算以及输出。为提高可靠性，现场控制站通常配置为主从控制器双机冗余运行。控制器运行数据由工程师站组态后下装到现场控制站的主控制器，为保证现场控制站主从控制器之间的工程组态一致，从控制器需要向主控制器同步工程组态文件。主从控制器同步过程需要过程可控，可靠性高，不对控制器的控制功能产生影响。传统FTP方法基于通用协议，协议栈复杂，通信过程不完全可控，且会增加系统开销，不适合直接复用。本文描述了一种自主设计的主从控制器文件同步方法，本方法基于UDP通信协议，设计了严格的校验以及重传机制，已在广利核公司自主研制的核电站DCS产品中得到了应用，并且对其他仪控系统嵌入式设备的冗余通信设计具有较大的参考意义。

关键词：核电站DCS；文件同步；UDP通信协议；嵌入式软件；冗余通信

Abstract:The field control station of the nuclear power DCS is the coreequipment in the system. Its main functions are acquisition, calculationand output of field signal. It usually operates redundantly from both main and secondary computers to improve the reliability. The operation data of the controller is loaded to the master controller of the field control station after being configured by the engineer station. In order to ensure the consistency of engineering configuration information between master and slave computers, synchronous operation of engineering configuration files between master and slave computers is required. This operation needs controllable process and high reliability, which does not affect the acquisition and output function of the control station. The traditional FTP method is based on general protocol, the protocol stack is complex, the communication process is not completely controllable, and it will increase the system overhead, so it is not suitable for direct reuse. Based on UDP communication protocol, this paper designs a file synchronization method between master and slave computers in the control station. The synchronization method is fully verified, which shows that the synchronization method has the characteristics of rapidity, reliability and good maintainability. This synchronization method is of great reference significance to the redundant communication design of embedded equipment in control stations or other instrument and control systems.

Key words: Nuclear DCS; File synchronization; UDP communication protocol; Embedded software; Redu ndant communication

在线预览：核电站DCS主从控制器文件同步方法的研究与应用

摘自《自动化博览》2020年10月刊