| Home gateway is the core of the smart home local area network. Interconnection between the sub-networks of various protocols and information-sharing are done through the gateway. Besides, the gateway is responsible for the Internet access of household LAN. Applicable to ordinary home users, gateway is generally designed into an embedded device and realized by using TCP / IP technology and microprocessor with high-performance. Household embedded gateway can complete the agreement conversion between the CAN fieldbus, RS485, Zigbee, power lines, and so on. At the same time it support various types of data transfer with the Internet, GPRS, GSM and other interfaces. Users may authorize the remote view and control home smart devices by wired and wireless Ethernet, mobile phone SMS.This papers discusses the hardware and software system designs of the embedded home gateway in detail based on the research focus---distributed intelligent network control system of the Internet and the digital control of household appliances; focuses on the implementation of the external interface part of the embedded gateway—TCP / IP protocol on embedded platforms as well as the the hardware design and software implementation of the internal interface part—power line carrier communication module, that is, from hardware to software, a complete control platform is built from domestic electrical appliances to the Internet transfer.After testing, the developed system has good stability and practicality and basically realizes remote device monitoring function through the Internet via power lines. |
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