| The thesis researches and discusses the design of direct power supply measuring and controlling device in detail. It studies the device from the following aspects: the selection of the scheme of the system, the design of the software and hardware of the system, the debugging of the system. The thesis gives a practical system scheme. The system is easy to operate.First of all, this thesis introduces systematically the definition, the function and the apply occasion of direct power supply system. Then it illustrates that the direct power supply measuring and controlling device the dissertation designs is of central station and function in direct power supply system.Then, according to the developing actuality of the direct power supply at home and abroad at present, the author compares the direct power he designs with other products from the aspects of price, performance, and whether it can satisfy the needs of the customers, etc, which shows that it is of practical value to develop this kind of direct power supply measuring and controlling device. So the researching and developing work is of theoretical and practical value.And the last, in order to realize the measuring and controlling device, the author discusses in detail according to the following aspects: the selection of the scheme of the system, the algorithm, the arts and crafts, the design of the software and hardware of the system and the debugging of the system, etc. And the author tries to provide a practical hardware and software scheme, debugging environment and method. The DC power system is determined to be composed of the main monitoring system , the DC insulation monitoring system and the parameter monitoring system with a blocking structure. Finally , it is presented that how to achieve the system' s immunity taking into account of the reliability of the system in the working environment. All the signals including A/D, D/A, DI, DO and serial ports are photoelectric isolation. Consequently,...
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