Design And Realization Of Virtual Experiment System

The experimental teaching is an essential link in teaching activities. However, the currentstatus of experimental teaching can not meet the meet the demands of teaching in manyschools. Especially, in Distance Education, students can not conduct the actual experimentaloperation. So it is necessary to develop a distance learning mode which can adapt to theexperimental teaching system. In recent years, the rapid development of virtual technologyand network technology laid a solid foundation: for further researching and developing thenetwork virtual experiment system.In this thesis, firstly, based on the analysis of the current situation about distanceeducation network on virtual experiment system in all lands, we explored the meaning ofresearching virtual experiment system and defined some conception. Secondly, we researchedthe demand analyses of the function, the structure and performance of virtual experimentsystem and explained the main techniques of the Web-based virtual experiment system from afew respects, such as the technology of the virtual instrument, the web server development,the web database and the web basic protocol. Thirdly, we designed the virtual experimentsystem for distance education, including systems architecture and design of each functionmodule. Specifically, the six function modules of the virtual experiment system were designedin detail. Finally, we introduced the use of lab VIEW of virtual instrument softwaredevelopment tools, examples of various types of virtual instrument design,for example, signalanalysis, signal processing classes and self-realization process for designing experiments.Furthermore, we analyzed the reliability and security of the virtual experiment system and putforward corresponding countermeasures.Both network testing and publishing proved the design is feasible and runs well. Theinitially teaching results is better,and the expected goal is also achieved. Meanwhile, thesystem is suitable for distance education in the experimental operation and management.