Design Of Intelligent Home System Based On WIFI

With the improvement of people's living standard,the requirement of comfortable and intelligent home environment is more and more high,and smart home products are paid more and more attention to.The Government's "Internet" action plan clearly identifies the combination of smart homes and the Internet.Most of the traditional smart home products are the intelligence of a single device,and most of the current smart home systems use wired connection and decentralized control,can not achieve centralized management,and there is a large power consumption.In order to realize centralized management and wireless communication of indoor equipment,WIFI wireless communication technology,embedded technology,Internet technology,fuzzy control technology,etc.A smart home system based on WIFI is designed,which can realize the monitoring and centralized control of indoor environment,and has certain social and economic benefits.This paper mainly studies the following contents:(1)According to the application requirement of smart home system,the central controller of intelligent home system based on STM32F103 is designed in this paper.The network and extension of WIFI network of smart home are realized by HLK-RM04 module,and the voice control function of the system is realized by LD3320 module.The real time monitoring of indoor environment is realized by OV2640 module,and the environment monitoring module based on temperature and humidity PM2.5 / CO2 is extended to be the main data source of intelligent control.(2)The smart home system designed in this paper has three kinds of control mode: 1)speech control: the central controller extends the voice control module,the user can control by voice command / app.This paper designs the remote intelligent home control mode based on mobile phone APP.Users can control indoor equipment directly by logging on APP.Fuzzy control decision can be transferred to each device through the extended WIFI module of the central controller,so as to realize intelligent control.(3)In this paper,the intelligent home control model based on fuzzy expert knowledge is established.The model can make fuzzy inference to the monitored environmental factors and obtain the control decision.(4)Finally,the communication module,voice control and remote control of the smart home system are tested according to the test scheme.Through the system test,the transmission ability of indoor WIFI network can meet the needs of the system design,and the packet loss rate can be controlled below 0.4%;The voice control system can adapt to all kinds of indoor environments,and the accuracy is as high as 92.The remote control and real-time monitoring of the indoor environment can be realized in the mobile APP.The system is simple,practical and easy to control.It integrates more functions on the basis of the existing products,and improves the intelligence of the system through fuzzy control decision.