| With the development of the modern information technology and rising of people's living standard,smart home is becoming an essential part of people's life. The construction of the smart home will bring about a comfortable , convenient , safe and economical life style to people. Incorporating the advantages of power line communication, Spread spectrum communication and Ethernet communication technology, I designed a new smart home system. The scheme is that: Power line works as communication media inside home, and a house network is formed by power line with the interface home-made chip of SC1128 based on direct spread spectrum technique; House network connects with community Ethernet by embedded gateway that collects and transmits home information to community managing center; On one hand, community managing center collects and stores information, on the other hand, it is connected with Internet and residents can remotely inquire and control home information. This scheme can be available not only in new constructed community, but also in the old rebuilt community, so it is a kind of inexpensive and reliable smart home solution. In this thsis I focused on the hardware research, communication protocol and software program of the house network based on the spread spectrum techonology. I also introduced the hardware design, software design and flow chart of serial communication and Ethernet communication based on μclinux operating system for the embedded gateway. At last, I provided the design requirement for home-information management software inside commuity server.
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