Research And Application Of Internet Of Things Based On ZigBee Protocol

The Internet of things industry as an emerging industry, its application direct effects on industrial production, logistics, retail industry, modern agriculture, security, medical, Home Furnishing life and other industries.It has become a great impetus for the development of human society. The bottom of Internet of things is closely related on sensor networks, RFID, the core chip, and wireless communication and so on.but the research is still in its initial stage, facing many problems, especially the problem of RFID and application problems. Therefore, further studyingon the key technologyand application in practical engineering projects is imperative.By studying on the key technologies of the Internet of things, RFID technology, ZigBee technology, wireless sensor networkand SMS technology, this thesis improved some of the original technology performance and reliability. Finally, the research put the core technology of the Internet of things into the open laboratory management system and intelligent Home Furnishing system to verify the correctness and feasibility of the improved technology.At first, the thesis analyzes the basic principle of RFID technology, Zigbee wireless sensor network and studied the RSSI location of ZigBee network environment. Secondly, in view of the application of open laboratory management and intelligent Home Furnishing management two projects, application of RFID and Zigbee has been studied deeply, put forward to solve the identification and communication scheme of the underlying equipment in the two systems. After that, in the open laboratory management system, this thesisdesign and implementation of experimental equipment management solutions, mainly to solve the leakage read problem of RFID, in the ZigBee network of open laboratory management system, thesis designs of sensor and electrical equipment management scheme by making full use of ZigBee240 equipment. By studyingthe address assignment mechanism of ZigBee network, summarized the calculation formula of address in ZigBee tree network,By the address calculation formula, the thesis summarizes the situations of equipment network address changed when the ZigBee network equipment leave the network and add in again. It makes the system manage ZigBee network accurately. In the intelligent Home Furnishing system,the thesis designed and implementedfood management scheme of intelligent refrigerator.The scheme mainly relies on RFID technology.The food information written to the tagprior, then RFID reader in the refrigerator directly read the food information in the label to achieve management for food. The test results show that, the proposed scheme can satisfy the system requirements.In addition, byaiming atthe requirements of system application, this thesis completed the design and implementation of SMS cat, RSSI positioning module. The realization of SMS cat solves the problem of SMS cat receiving a large amount of long messages error, and the results were applied to the target system.