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作者：承　維（1985-），男，北京人，嵌入式系統(tǒng)設(shè)計師，碩士，現(xiàn)就職于北京廣利核系統(tǒng)工程有限公司，主要從事核電DCS主控嵌入式軟件研發(fā)工作；

馬建新（1976-），女，河北人，高級工程師，學(xué)士，現(xiàn)就職于北京廣利核系統(tǒng)工程有限公司，主要從事數(shù)字化儀控系統(tǒng)研發(fā)工作。

摘要：核電站DCS現(xiàn)場控制站是核電站控制系統(tǒng)的核心設(shè)備，其主要功能為現(xiàn)場信號的采集、運(yùn)算以及輸出。為提高可靠性，現(xiàn)場控制站通常配置為主從控制器雙機(jī)冗余運(yùn)行。控制器運(yùn)行數(shù)據(jù)由工程師站組態(tài)后下裝到現(xiàn)場控制站的主控制器，為保證現(xiàn)場控制站主從控制器之間的工程組態(tài)一致，從控制器需要向主控制器同步工程組態(tài)文件。主從控制器同步過程需要過程可控，可靠性高，不對控制器的控制功能產(chǎn)生影響。傳統(tǒng)FTP方法基于通用協(xié)議，協(xié)議棧復(fù)雜，通信過程不完全可控，且會增加系統(tǒng)開銷，不適合直接復(fù)用。本文描述了一種自主設(shè)計的主從控制器文件同步方法，本方法基于UDP通信協(xié)議，設(shè)計了嚴(yán)格的校驗以及重傳機(jī)制，已在廣利核公司自主研制的核電站DCS產(chǎn)品中得到了應(yīng)用，并且對其他儀控系統(tǒng)嵌入式設(shè)備的冗余通信設(shè)計具有較大的參考意義。

關(guān)鍵詞：核電站DCS；文件同步；UDP通信協(xié)議；嵌入式軟件；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

在線預(yù)覽：核電站DCS主從控制器文件同步方法的研究與應(yīng)用

摘自《自動化博覽》2020年10月刊