Vrml And Java-based Network Virtual Simulation Design

The development of information and communication technology arround the core of computer, the global integration and network are forming, the network education emerges as the times require. This will change people ' s traditional ideas thoroughly,students in network school could be distributed about the world, the educational material could be put on everywhere, and have no obstacle of time and space anymore. It can boost the students learning agility and reduce the cost of education and study.At present, the remote education is developed vigorously in overseas especially in the USA, demonstrated by the new report of IDC, it's accepted by the American colleges rapidly, the American institution nearly 90 percent will provide "on_line learning" chances, the contemporaneity distance education network platform is formed roughly, which based on the CERNET and satellite video system builded in 1994. By the speed of 100M, more than one handred colleges are taking part in , and the users raised to 8000 thousands.Experiment is an important tache among the education activity, in this course, the education institutions and students are sperated in space, students can't do concrete experiment in school lab. Thus become the important element which restrict the molar of network education.The virtual network Lab is coming as the times require, there are the instruments which simulated by software, it can generate some valuable and virtual Logic instruments as even. It reqires the participators to share the environment and rules in virtual Lab, and be easy to realize on Web.In this article, we have modeled all the componments of circuit by using the VRML powerful function of three_dimension graphics edit and interaction,especially by using the VRML inside node, sensor node, event, route and so on, this is convenient for some demo of experiment education.At the same time, the Java mightness network programmable and the interface technology to VRML are discussed deeply, which realize the control action to VRML, by anatomy of event In, eventOut, Script and so on, in particular, according to the demand of network learning to participate the simulate experiment,the EAI is analysed in detailed as well.Finally, combined with the technology of VRML, Java, EAI and HTML, a virtual rough craft is shaped to network learners, the basic documents are introduced as the experiment environment needed.The construction of virtual Lab is very important for senior profession education and practice, students can enter the practice field any angles by operating the computer, in this field, the students can carry through the essential experiment object, it is also can realize the connection and amend the parameters, by operating the experiment object, the experiment is obtained almost near to the actual field, and gain the same effect of theory and practice in the course of the remote education.This topic is based on electric technology experiment mainly, a perfect course of virtual Lab is introduced, along with the development and perfect of correlation technology.the research work will be continues deeply and gained new development.