Zigbee-based Centralized Net-control For Household

Recently, as the communication of wireless, integrated circuits, semsors and MEMStechnology has developed from the single gradually towards integration,miniaturization andnetworking,wireless sensor network therefore born. In particular,smart home,vehiclenetworking,smart health and other new technology and new priduct after anthor.the idea,smartsystem, enhanced people’s lifestyle, and more convenient to make people realizea better life. At thesame time, people demand more on the technology of wireless communication. Bluetooth, zigbee,WI-FI and other short-range technologies of wireless commuinication have emerged as the timesrequire. Zigebee is suitbale for the short-distance wireless martet because of its low powerconsumpution and low cost, make up for the wireless market vacancies.Several key techniques are analyzed and compared in this article, and then the author pointedout that the Zigbee wireless technology is most suitable for using in net-control for household. Anda analysis of the Zigbee technical standard system are completed in detailed, especially on theZigbee protocol stack and network topology,which is also the key part of the soft designning.Then is the overall planning of the whole system.the whole system is divided into softwarepart and hardware part. The hardware part includes the wireless control module, switching powersupply module, power detection module, key detection module, LCD module, and drive moduleindicating switch. The software part is divided into two parts, one part including the soft design ofthe coordinator-node, router-node and terminal-node, which, is designed to achieve the function ofprotocol stack. The other part is designed as application program which contains power-detectedsoftware, key-detected software and OLCD-displaying software. Finally, copying the protocolstack which contains some application software to each control module, connecting all the electricappliances to a mesh network and then completing the switch control and power detection function.All of the electrical appliances can be centrally controlled in this design, it is suitable forelectricity management in villas, hotels or office buildings. It has the advantages of simpleoperation, energy saving; at the same time it also changed the shortcomings of the cable controlwiring such as complex, cumbersome, which has certain practical significance and economicsignificance.