| Security Protection is still a matter that people care nowadays. The traditional analog home monitor can not meet the need of society, and will be replaced by digital one gradually. With the rapid development of embedded technology, multimedia technology and network technology, more networked and intelligent becomes the inevitable development trend of home monitor.By means of the analysis of smart home system, the dissertation designed the global structure. Aiming at character and function of smart home system, it utilized the 32-bit embedded ARM processor S3C2440 as the controlling core of the smart home system in this dissertation. It designed core circuit of controller in detail, including S3C2440 controller chip circuit, memory system circuit and power circuit. To meet the demand of global project design, it designed LCD interface circuit, keyboard circuit, wireless transmission module circuit, other peripheral interfaces and establishes all the system hardware platform. Then it provided the detail design of the leaking and warning module of coal gas.In the intelligent controller system, this dissertation designs and constructs a wireless sensor network based on ZigBee protocol to detect the house environment datum. On the basis of analyzing ZigBee protocol, writing the Linux device driver of ZigBee module, designing the functions of the master node and slave node in sensor network and a specific data format on application layer for communication between the internal nodes is accomplished; On the basis of analyzing video processing flow, designing and implementing a video collection scheme in keeping with Video4Linux based on segmented mapping technology, a working flow of video collecting. |
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