| 工业监控组态软件实时历史数据库的分析与实现 |
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| 引用本文： | 张秀霞,郝佳龙,王爽心. 工业监控组态软件实时历史数据库的分析与实现[J]. 华北电力技术, 2009, 0(11): 50-54 |
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| 作者姓名： | 张秀霞 郝佳龙 王爽心 |
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| 作者单位： | 1. 中国水利水电建设集团公司,北京,100048
2. 北京交通大学机械与电子控制工程学院,北京,100044 |
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| 摘 要： | 详细分析了实时历史数据库系统的总体需求和组态软件的系统结构，设计了一种存储密度大、存储空间利用率高的存储文件结构；引用内存映射文件技术处理数据文件的读取，提高了数据文件的I／O速度；在压缩策略中，采用死区压缩和一种改进型的旋转门压缩算法，得到了很好的效果。
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| 关 键 词： | 组态软件 实时数据库 历史数据库 压缩算法 内存映射文件 |
Analysis and Implementation of Real-time Historical Database of Supervisory Control and Data Acquisition Configuration Software |
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| Zhang Xiu-xia,Hao Jia-long,Wang Shuang-xin. Analysis and Implementation of Real-time Historical Database of Supervisory Control and Data Acquisition Configuration Software[J]. North China Electric Power, 2009, 0(11): 50-54 |
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| Authors: | Zhang Xiu-xia Hao Jia-long Wang Shuang-xin |
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| Affiliation: | Zhang Xiu-xia, Hao Jia-long, Wang Shuang-xin (1. Sinohydro Corporation, Beijing 100048, China; 2. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University,Beijing 100044, China) |
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| Abstract: | Based on a detailed analysis of the overall demand for the real-time database system and configuration software system architecture, a kind of storage file structure of high-density and high utilization of storage space is designed; Memory-mapped file is creatively used to deal with reading data files, so that data file I/O speed has been enhanced; Dead-zone compression strategy and an improved compression algorithm of the swinging door are used in this system to achieve good results. |
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| Keywords: | configuration software real-time database historical database compression algorithm memorymapped file |
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