| Recently, because of the high requirements on the information technology of the electric power enterprises, Real-time Database System has become one of the most important parts of the power enterprise automation system. The configuration system of monitoring is application software which is used in the automatic industry and Real-time control. It provides automatic project with the man-machine interface or SCADA (Supervisory Control and Data Acquisition) systems. Operators can obtain the real time data in the field conveniently and intuitively and the aim of monitor at the real time by using the configuration software of monitoring. Consequently, we can know the operating states timely and find the devices trouble quickly in the field. Thereby, the productivity will be promoted. Now, the configuration software is popular in the electric power enterprises.The designing of the Real-time database is the key and the most difficulty part in the configuration software. According to the overall demand for Real-time Database and the system structure of configuration software, a history of the Real-time database system with independent intellectual property rights is designed based on a configuration system for Power Units. The main contributions of this thesis are listed as follows:1. A kind of storage file structure of high-density and hig storage space utilization is designed2. Using Memory-mapped file to deal with reading data files, data file I/O speed has been enhanced3. Dead-zone compression and an improved compression algorithm of the swinging door of the compression strategy is used to compress data, which achieved good results.The item which the thesis based on has been checked and accepted, the Real-time Database System satisfies all the requirements of clients. |
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