The Design Of Smart Home System Based On ARM And WIFI

With the upgrading of the level of science and technology,the concept of artificial intelligence is also more and more familiar.Mankind began to study and explore the intelligent way of life.Smart home conforms to the development of the times,becoming a sunrise industry.Domestic and foreign technology companies have begun to enter the smart home R & D industry.Because of the immaturity of technology and industry,the development of smart home is still in the initial stage nowadays.This paper makes a detailed analysis of the development of smart home at home and abroad,and discussed the bottleneck encountered in the development of smart home.Based on the current level of technology and people's way of life,after the comparison and research of communication technology of smart home system,we propose a feasible design.It is on the premise of the ARM processor STM32F107VCT6 and WIFI technology.The infrastructure and the Ad-hoc network cooperate with each other.Completed the Lw IP protocol stack for embedded porting in the absence of operating system.And programmed for the ESP8266 module with AT commands.The design takes sensor nodes,central nodes and router as the control core,forming a three-tier network structure.Ad-hoc networks are built between the sensor nodes,increasing the freedom of the smart home due to its multi-hop features,so that the home environment is more comfortable.Set up the infrastructure network between the central nodes.The stability of infrastructure network enhances the controllability and security of smart home system.The central node connects to the Internet through a router to form a third layer network.We can realize the remote control of smart home system by the way of visiting website or connecting APP.In addition to the software design,this paper also carries on the hardware circuit design to the sensor node,including the design of the power module,acquisiton circuit and sensor drive circuit.We designed a variety of commonly used communication interfaces besides WIFI communication,such as CAN,RS-232,RS-485,USB and Ethernet interface.Finally,the sensor nodes of the smart home are tested.The results show that this design meets the requirements of smart home system and achieves a reasonable monitoring and remote management for the home environment.This design provides a viable solution for the development of smart home systems.