Virtual reality technology is a computer simulation system that can create and experience virtual worlds. It uses computer to generate simulation environment, is an interactive three-dimensional dynamic visual scene with multi-source information fusion, and is a systematic simulation of entity behavior, making users immersive.
Virtual reality technology includes simulated environment, perception, natural skills and sensing equipment. The simulation environment is a computer-generated real-time dynamic three-dimensional realistic image. Perception means that the ideal VR should have the perception that everyone has. In addition to the visual perception produced by computer graphics technology, there are hearing, touch, force and movement, and even smell and taste, also known as multi-perception.