Research Of Network Appliances Control System Base On CAN Bus

With the coming of the global information age, home appliances have not only acted as the high-quality electrical apparatus, but also incorporated to the information-intensive society progressively. Adapting to the networking trend of the electrical home appliances at present, the CAN (Controller Area Network) bus-based network appliances control system has been proposed in this thesis. In this control system, all the electrical apparatus in the house have been connected together with home bus network, and accessed to the Internet. This is a kind of practical home appliances Internet surfing scheme, and it has wide application prospects. After comparing a few kinds of field bus network schemes, the thesis decided to adopt CAN bus to construct the network, and generally discussed the character, technique features and reliability of CAN bus. It also provided the whole construction scheme of the home network based on CAN bus. By studing the current nonpolarity networks, a nonpolarity scheme of CAN bus has been put forward in this thesis. This technology has been successfully used in the CAN bus network, and greatly improved its practicability. Meeting the needs of home appliances network, a thought of using the embedded gateway working continually as home control center has been proposed in the thesis. A practical presentation to the design scheme of embedded gateway has been given, too. The top-grade MCU Rabbit2000 has been selected as the microprocessor of the embedded gateway. The connection of the CAN bus network and the Internet have already been realized. On the other hand, the website has been founded and the long-distance control of network appliances have been realized. Large amount of simulation experiments have been carried out in the project by utilizing favorable network resources and environment in our university, and the basic structure of network appliances control system based on CAN bus has also been established primarily.