Research On Wireless Sensor Network For Smart Home Based On ZigBee

Along with the computer technology, automatic control technology, the continuous development of Internet technology and mobile communications technology, there are more attention and more in-depth research in smart home area. Because of the characteristics of itself, Wireless Sensor Network technology based on the ZigBee wireless protocol has been widely applied in smart home、safety monitoring and industrial control. ZigBee technology is short、multiple hops、 low cost and network advantages of large capacity, more suitable for application in smart home control system. In this paper, the smart home wireless sensor network is analyzed and the study. The main contents of this paper are as follows:First of all, the research background and research significance of smart home are expounded. Smart home control system are introduced in the domestic and foreign research present situation. There are advantages in the field of wireless sensor network technology in smart home. Through the comparison and analysis the advantages and disadvantages of centralized mainstream wireless transmission methods at present, get ZigBee wireless transmission technology is more suitable for the conclusion in the field of smart home.Secondly, analyses the IEEE 802. 15. 4/ZigBee protocol, this paper introduces application of ZigBee network related concepts, research the ZigBee device type, network topology structure and protocol specification and related technical parameters are introduced and analyzed.Thirdly, this chapter of the smart home control system coordinator and each sensor terminal sensor node hardware design. On the basis of the use of TI CC2530 implement ZigBee node hardware design. In addition to the main control circuit design center node, using STM32 as main control chip to construct the embedded minimum system circuit design, it also includes other peripheral circuit design are respectively Ethernet card DM9000 AEP, RS232 serial communication and JTAG circuit. At the same time, the software design of smart home system.At the same time, the software design of the smart home system has been carried, firstly the Z-Stack protocol Stack ZigBee2007/PRO developed by TI company for its wireless transmission chip CC2530. Transplanting the protocol stack to the coordinator node and each sensor terminals ZigBee node, control the formation and family control subnet. Finally, the wireless sensor network has carried on the research of AES encryption algorithm.Finally, in this paper the household intelligent control node of ZigBee parts test, ensure that each part design can meet the requirements of this paper. After part with other joint debugging, can satisfy the needs of users. Complete the coordinator node and the realization of the function of local area network(LAN) network terminal control node, and through the central control node as the bridge of data access, realize the remote access control functions.