Research On The Web-based Virtual Experimental System

With the extensive application of online education, research of web-based virtual experimental system is concerned gradually. Virtual experiment is an important means in modern education, for sharing and optimizing teaching resources.Based on the analysis of virtual reality, virtual experiments construction theory, modeling methods and the key technologies, the article proposes a distributed Web-based solution for Virtual experimental system. The system is based on laboratory Intranet, using browser / server model, can do long-distance virtual experiments; The system simulates experimental environment, experimental subjects and experimental process based on VRML technology and other virtual reality technology. The system adopts three-tier structure of the presentation layer, the function layer and data layer and the interface is divided into four parts of virtual center, exchange center, data center, download center according to the various aspects of teaching. The research focus on the system modeling and interactive mode, then gives application examples such as the virtual experimental system for parking, intelligent lighting system and fire fighting system. Finally, the article proposes prospects for the platform in the further study.The distributed Web-based solution for Virtual experimental system, can supply our intelligent building laboratory system ( such as parking lot that is not advisable to perform in laboratory ),also, can be used in other professional or for basic laboratory, so that it has practical value.