Management Information System Of Network Electric Meter Reading System Base On HFC

The thesis introduces researches on automatic electric meter reading system at home and abroad, illustrates the composition, function and characteristic of automatic electric meters reading system based on Hybrid Fiber Coax (HFC) network, and gives a scheme of network electric meters reading system based on HFC developed by us, the Management Information System (MIS) developed by the author is the emphases.MIS is on the top of the system, whose main task is providing complete and exact basis for managers to making decisions. It sends instructions of reading data or setting parameters through the host computer, which is analysed and divided into commands for the ammeter by the collector, the ammeter collects data or modifies parameters according to the instructions. After having received the data from the ammeter, the collector generates answer frames and data frames, then sends them to the host computer. The host computer processes these data and sends them to the program taking charge of data processing in database, the program inserts all the data into database and informs MIS, which helps managers get informations about ammeters in time and exactly. Managers will make decisions according to the data, which can make the power network work normally.The thesis discusses the technology in database programming, network programming and multi-thread programming. The author makes demand analysis of software, gives the demands of function, data structure, running and performance, and describes the logic modal of the system using data flow diagrams.On this base, the author have designed and developed the management information system based on Client/Server(C/S) using PowerBuilder?.0 as downstage tools and SQL Server7.0 as the database server, which realizes the functions of all modules of MIS.Thedesign flow diagrams of important modules and interrelated key technology are also given in the thesis.MIS is made to work with the intelligent electric meters and the host computer to test the whole system in the process of developing the software. The introduction of the software debug process is also given in the thesis. In the end, the author summarizes the work of the thesis and discusses the direction of the future development.