分散控制系统中数据库的应用研究  

Application Research on Distributed Control System Database

作　　者：张秋实[1] 仝卫国[1] 于浩进[1] 

机构地区：[1]华北电力大学河北省发电过程仿真与优化控制重点实验室,河北保定071003

出　　处：《计算机仿真》2013年第11期104-107,共4页Computer Simulation

摘　　要：数据库是分散控制系统组态软件的关键部分。针对实时数据库的设计思想和实现方法以及分散控制系统对实时数据库的使用要求,采用动态链接库来建立组态软件的实时数据库。利用这种方法建立的实时数据库具有很强的通用性和全面的开放性,可以大大提高数据传输效率,解决了实时数据库并发控制中死锁的问题;同时,采用基于"断点续传"的数据恢复技术,可以维持系统发生故障后数据的完整性;对历史数据库中的数据压缩模块进行了改进设计,实践证明这种压缩方式可以明显的提高数据压缩率,节省工控机的存储空间。Database system is the critical component of distributed control system configuration software. Accord- ing to the design ideas and implementation methods and requirements of the control system design for the real time da- tabase system, the RTDBS has been constructed by using DLL in this paper. The RTDBS which makes use of this method is of comprehensive openness and strong interoperability, it improves the efficiency of data transmission, and can solve the deadlock problem in real-time database concurrency control. This data recovery technology based on ＂resume broken transfer＂ can maintain the integrity of the data after system failure occurred. The data compression algorithm of data compression module in history database also has been designed and improved in this paper, the ex- perimental results indicate that the compression ratio of the algorithm has been obviously improved, and can save the storage space of industrial computers.

关 键 词：分散控制系统 实时数据库 历史数据库 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]