Research And Design Of Smart Home System Based On Wireless Sensor Network Technology

Smart home use computer technology,control technology,image display technology and communication technology to contact kinds of constructions with family network. Thus, smart home provides a more comfortable and more convenient life for people. Traditional smart home generally carries on control and communication with this measure that install wire line circuit. But this measure not only make people difficutly to separate from kinds of line,spend the cost of installation ,but also system's extension is also very bad. hThe smart home based on wireless technology not only break away the line,reduce the cost of installation , moreover system's extension also had the large scale enhancement. Therefore the research based on wireless that is very essential to the development of smart home.The smart home system that this article designs realize the home environment examination and the control, set up based on the wireless sensor networking family network. Because smart home more and more lean to low cost,low power,easy operation,easy installation design mentality. This article use the wireless sensor network as the network form and use low cost and low power singlechip MSP430F449 from TI company and low power and low cost RF-Transceiver to design a smart home. The system installation is convenient and the applicable scope is broad. The system has the very good use value. The paper completed software and hardware design of control module,the sensor module based on referring correlative information. Aspect of hardware design, completes selection of single chip and design of mostly circuit in each module and hardware schematic diagram. Aspect of software design, Through analyzes each module the function, completes the flow chart and the procedure.In addition, this article also introduced a low power wireless receiving and transmitting chip CC1100 in detail, completed software and hardware design of wireless receiving and transmitting module. Aspect of hardware design, completed the peripheral circuit design of CC1100 and design of interface circuit .Aspect of software design, completed setting of register,communication of SPI with single chip and receiving and transmitting of data, has given the flow chart and the procedure.This article another key point is network of smart home. Based on comparing existing network's technology, selects wireless sensor network to establish family network. Through compared several kind of basic network topology, selects the star network topology. Completed communication protocol design of wireless sensor network, Introduced emphatically the CC1100 communication protocol and the data packet format, has given the wireless sensor network data transmission flow chart and the procedure.Finally, carried on the debugging to the system, confirmed rationality of the system design, summarized the paper, had pointed out system design's insufficiency and the improvement mentality, have made the preparation for further research of the topic.