Modern home furnishings have solved the most basic housing problems, but how to make homes more informatized and modern has become the focus of people’s growing concern. With the rapid development of information technology, improving the intelligent level of family life and modern lifestyle is bound to be the trend of future development. This paper studies a smart home control system based on wireless sensor network positioning, which can perceive the home environment through the sensor module, and the control module can automatically control common electrical appliances to achieve real-time data monitoring and alarm functions. Specifically, it includes a positioning module, a communication module, and a server: the positioning module is connected to the server through the communication module, and the positioning module is used to obtain user location information in real time and report user location information to the server at intervals. The server receives the user reported at intervals through the communication module. Location information and remotely control smart home devices based on user location information. The research results show that the method proposed in this paper can separately monitor each part of the home and send it to the home appliance control module through the server to control the home appliance, optimize the living environment, and realize the remote control and monitoring of the smart home.

With the continuous improvement of information society and productivity, various emerging technologies are constantly emerging in the context of computers and big data. Among them, virtual reality technology and computeraided technology have become popular research topics today. Virtual reality technology utilizes computers to establish multidimensional three-dimensional models, achieving good results in communication and reorganization of various activities from dynamic environments and data numerical analysis. This article starts from the direction of terrain survey and modeling, and uses virtual reality technology to analyze the three-dimensional structure of surface models. Using 3D mathematical modeling to build the basic features of terrain, and combining virtual reality technology to optimize the real-time display and resolution of massive data in 3D modeling. Apply virtual reality technology and computer-aided tool CAD together in the process of graphic generation and rendering. Establish an irregular three-dimensional mathematical hierarchy, generate a continuous, multi resolution visualization model, and achieve the function of dynamically transmitting terrain and landforms. Using numerical simulation 3D visualization method, using ANSYS software for numerical analysis and transmission. The ultimate goal is to build a three-dimensional visualization scene while providing users with an interactive experience. The research results indicate that virtual reality technology and computer-aided CAD tools are effective and practical in the research process of terrain 3D mathematical modeling and visualization. The numerical features also demonstrate strong interactivity and intuitiveness, which has certain promotional value.