In this paper, a general introduction to the development history of Fieldbus control and some basic concept of corresponding technology is presented. Based on the understanding of general technology, the HART protocol, one kind of Fieldbus protocol which is regarded as a transitional protocol, is studied explicitly. The software and hardware structure of a transmitter and the software flow of its measurement and control is demonstrated. A new type of software -- Device Management System based on HART protocol, as well as its function, effect ,the software structure and the function design in detail, is developed which provides a novel mode for the management of modem plant. Several technologies used in software realization such as Digital communication, Database, MFC class libraries (include DAO technology and Common Control technology), OPC interface protocol, DLL and CLIENT/SERVER structure are described. Finally, the main contributions and innovation ideas of this paper is summarized briefly and some suggestion to the further work is proposed.
修改评论