设计了以淬发方式产生强流电子的4 MeV 直线感应加速器的基于局域网的分布式控制系统.介绍了应用FP2000分布式I/O系统和可编程序电源的硬件体系结构,阐述了在Labwindows/CVI平台上基于DataSocket服务器作为数据传输媒介的分布式系统实现方法.对系统开发中出现的DataSocket服务器数据丢失,因数据项数量庞大而带来应用程序的结构和逻辑关系难于把握两点不足,提出了对数据项进行抽象和综合,应用数据字典描述数据项,充分考虑可靠性和快速响应之间的关系,合理使用数据项的属性等有效的实现办法.

A monitoring and control system for 4 MeV electron linear induction accelerator capable of producing beams in burst mode is presented.The system is a distributed one based on local network using DataSocket.The hardware using FP2000 distributed I/O system and Chroma programmable AC power sources is described.The software architecture based on DataSocket as a communication medium in Labwindows/CVI is also presented.As to two shortages of DataSocket caused by loss of unprocessed data and complicated relationships among lots of data items,some methods such as abstracting and synthesizing data items,describing items by data dictionary and making some compromise between rapidity and reliability are presented to fix the limitations.