Design Of Smart Home System Based On Internet Of Things

With this new term of the Internet of Things gradually into our field of vision,high-tech is no longer on the shelf.People are more looking forward to take more comfortable and convenience life with science and technology.Smart home will integrate sensing nodes and home appliances into together using by the new technology.The formation of a new intelligent home system will bring a new experience to the people's lives.This article deeply studies and summarizes the background and development of smart home.After understanding the status quo of study at home and abroad,and the advantages and deficiencies of the current product,this paper designed a smart home system.It is a wireless sensor network for transmission,which can be connected with the Internet,and be monitored by computer or mobile phone.By comparing several wireless transmissions,it is found that ZigBee is well suited for use in smart home systems.It has low power consumption,low latency,large network capacity,with self-healing ability.The system finally decided to use ZigBee to set up a home internal wireless network.The use of embedded ARM chip equipped with Linux operating system constitutes a gateway to achieve the home intranet and external network connectivity.According to the basic needs of the home,this paper designs the system function and implementation plan.After full study and demonstration,this paper chooses CC2530 chip as ZigBee technology hardware support.This paper designs the CC2530 chip peripheral circuit,data acquisition circuit and alarm circuit.Based on the Z-Stack protocol stack,the software migration and development of the wireless network is completed.In the production system of embedded gateway,this article uses S3C2440 chip as the hardware platform.Implements features include the Linux operating system,Apache server,Sqlite3 server and other software.Designs a web page user interface for residents to view and control home information.Finally,this paper makes a comprehensive test on the performance of the system,which verifies the self-healing ability of the system when the burst node is suddenly powered down.The influence of node distance on data transmission performance is analyzed,and the arrangement method of wireless network node is determined.Experiments show that the system has a temperature and humidity monitoring,lighting control,home appliances control and gas safety monitoring functions,to network management and real-time display.The system has the characteristics of mobile flexibility,scalability,low cost,low power consumption and simple operation.The system has a certain self-healing ability,high measurement accuracy,control operation is stable.It can better meet the needs of people to facilitate a comfortable life.