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本文针对传统关系型数据库系统在电网调度员培训仿真系统(DTS)的实时应用中存在的缺陷,提出了实时内存数据库与离线ORACLE数据库相结合的实时数据库模型。同时为提高内存和数据库之间的存取速度,降低CPU占用率,采用基于高速PCI总线的直接存储器存取(DMA)技术进行数据传输。
In this paper, aiming at the shortcomings of the traditional relational database system in real-time application of dispatcher training simulation system (DTS), a real-time database model combining real-time memory database and offline ORACLE database is proposed. At the same time, in order to improve the access speed between memory and database and reduce the CPU occupancy rate, DMA is adopted based on high-speed PCI bus for data transmission.