Research On Key Technologies Of Intelligent Home Terminal Control System Based On Internet Of Things

Smart home is based on residence,relying on the development of computer technology and communication technology,and organically integrates the home equipment related to life.It can monitor the environment and improve life comfort;It can control access control and improve family security level;Remote control can be realized through communication network.At present,the intelligence and network coverage of smart home are still difficult to meet the needs.The problems such as unstable system connection,high node power consumption and incompatibility of cross platform products also restrict the promotion of smart home.Therefore,designing a smart home control system with low cost and low power consumption is of practical significance to improve the comfort of people’s home life.Combined with Internet of things technology and wireless communication technology,this thesis designs a smart home system with low power consumption and high compatibility.The smart home system can realize the real-time reading of the temperature and humidity of the home environment,the monitoring of indoor harmful gases,the alarm of abnormal conditions and the automatic control of curtains.The smart home system can communicate with Huawei cloud platform through NB-IoT communication module to complete the remote control function.It can also be controlled by intelligent voice,which not only liberates both hands,but also increases the control form.This thesis uses ZigBee wireless communication technology to establish the wireless sensor network inside the home,which mainly realizes the collection and display of temperature,humidity,light intensity and smoke concentration of the home environment,as well as curtain control.The hardware design of smart home gateway and the optimization of each peripheral module are completed.It ensures that the smart home gateway can carry out normal data transmission with ZigBee coordinator.Then the communication between home LAN and Internet of things cloud platform is realized through NB-IoT communication module.Huawei cloud platform can process various data collected by the terminal and draw charts.It can also realize remote control of the terminal according to the actual situation.The voice recognition and control system is used to control the start and stop of curtain motor through relay module.Using NB-IoT technology can achieve high network coverage and effectively reduce system power consumption and cost.Finally,the whole smart home system is verified in the laboratory environment.The experimental results show that ZigBee,NB-IoT and other wireless communication technologies have convenient networking,good communication performance,the experimental data are close to the actual values,the system connection is stable and reliable,basically meet the requirements of system design,and have a good application prospect.