用于石化工艺试验装置的HSCS 95实时通信系统

REAL TIME COMMUNICATION SYSTEM HSCS 95 FOR PROCESSING BENCH SCALE APPARATUS

介绍了由中国石化集团洛阳石油化工工程公司工程研究院开发的计算机与现场仪表通信系统HSCS 95 的技术结构、技术特点及硬件和软件系统,重点介绍了其介质访问控制技术。讨论了计算机与现场仪表实时通信的若干问题及做法,主要分析了HSCS 95的通信多任务并行处理方法。提出了一个数字通信串行接口标准DC426。该通信系统已用于多种石化工艺试验装置。

The technical structure & feature, hardware and software of the high speed communication system HSCS 95 developed by Research Institute of Petrochemical Engineering Technology / LPEC are expounded with the emphasis on MAC technology. Problems in real time communication between computer and on-site instrument together with the countermeasures are discussed. The multitask parallel treatment method obtained by HSCS 95 is analyzed and a serial interface standard DC 426 for digital communication is proposed. HSCS 95 system is used in many petrochemical test units.