Research And Implementation Of The Smart Home System Based On Internet Of Things

With the rapid development of science and technology and the continuous improvement of living standards,the concept of smart home began to become popular and become one of the hot topics of scientific community for a time.Due to its broad application prospects and huge potential market demand,major electronics manufacturers have put into research and development of smart home system,and has made considerable progress.Various smart home products have come out,which greatly facilitates the lives of people.However,the traditional smart home are not a work independently because of the standards.From the point of the system,they are fragmented,chaos,disorder and not an organic,organized overall.The emergence of wireless networking technology has brought new opportunities to the traditional smart appliances and smart home.The home appliance can be easily organized by wireless connection,and form a complete system,so that it can realize seamless perception and complete management.This paper systematically analysis the characteristics of smart home technology,describes the design requirements of the smart home,design objectives and design process in detail,and gives the design scheme of smart home system based on Internet of things.In view of the development trend of the future smart home system,in this paper,the smart home system is designed modular,mainly including the wireless communication module,gateway module,an acquisition module and a control module.The system uses ZigBee wireless communication technology,and realizes the communication between the user and the system through the Internet and the mobile phone short message.And the functions of household electrical control,temperature and humidity,intrusion and health monitoring were realized.The system has simple operation mode and practical-integrated function.Not only can improve the quality of life of people,the results can also provide a favorable technical reserve for the construction of the wisdom community and the wisdom of the city.Considering the problem of the same frequency interference with WiFi AP in the application of smart home system,in this paper,the co-frequency interference problem of WiFi and ZigBee is studied,and the anti-interference algorithm for smart home wireless communication module is proposed.The algorithm includes interference detection and interference avoid.The interference detection includes the error rate of the system,the link quality and the channel energy,and the degree of interference is determined by the comprehensive detection.The avoidance of interference is realized by establishing the priority channel list without interference,and transport interference channel of the node.The simulation experiment proves the validity of the algorithm,which lays the theoretical foundation for the promotion and the application of the smart home system based on Internet of things.The experimental tests of the smart home system are carried out.The results show that the system has good generality and expansibility.Its low cost and low power consumption features have strong market competitiveness and promotion value.