| A data acquisition and processing in safeguard system based on CAN is developed in this paper, which integrates microcontroller and fieldbus technology with many other advanced techniques such as computer, communication, network and circuit design. A kind of intelligent CAN-adapter used in PC is designed to realize telecommunication, the design of whose hardware, software and communication program is also given. With the object-oriented programming used, the design of safeguard system software applied in chemical enterprises is presented. This system possesses good capabilities of acquisition, steady performance, friendly interfaces and excellent performance-cost ratio. This system has been used in practice and desired results are achieved.In Chapter One, the concept, background, tendency, features, benefits and main types of fieldbus, especially the concept and features about CAN, are introduced. Besides, the design background of this system, the main research work and the content assignment of this paper are also given.In Chapter Two, the design of the intelligent CAN-adapter used in PC is presented, including the realization of its hardware and communication software.In Chapter Three, the design of the management software based on CAN is given, including its idea, function structure, features, advantages, and the realization of database with the application of OOP.Finally, the summary of research work during graduate period is written. And the amendment of this system as well as the development of relative theory and technology are expected. |
