Study On Construction Method Of Network Virtual Laboratory For Comprehensive And Devisable Experiments

In recent years, the development of virtual reality (VR) technology is making greatstrides forward to the practicability, and has demonstrated the broad application prospect topeople. The virtual laboratory (VL) constructed with VR is operated on and on, and hasshown a strong development tendency. These days, the software of network virtual laboratory(NVL) rests on the single flow and the simple simulation. The outstanding works which isbased on the mathematical model, and controlling virtual experiment course throughabstracting intrinsic relations of each object and using parameter adjustment does not appear.There is no report on the research of the comprehensive and devisable chemical experimentsNVL specially. This paper does the research under the background.In this paper, the construction pattern is proposed; the development route and therealization method are brought forward on the basis of thorough researching of the theory ofVL,general construction method and developing technology,.The construction of virtual comprehensive chemistry laboratory is a comparativelycomplicated process, for the experiments involved in many deep theories, complexinstruments and equipments, difficult data processing, data multiple exchanges and real-timeinformation feedback. The software of the comprehensive chemistry NVL which isconstructed with the traditional construction pattern of the flow type which based on internaldata transmission is quite huge, and is not suitable for network operation under the presentcondition. The software becomes relatively difficult to extend and modify, for the complexprogram,the multivariable and the data relations, moreover, when construct othercomprehensive chemical experiments VLs, the method of internal data transmission is notadvantageous to share the " instrument " and "laboratory", and it lacks openness. This paperfirstly uses the construction pattern based on exterior data transmission and communion toconstruct comprehensive chemical NVL. This construction pattern not only speeds up the rateof network running, and also solves the problem of procedure versatility. It is extremelyeffective and convenient to modify,extend and communize. A feasible way has been set upfor building comprehensive chemical NVL. It is the key point and the difficulty to realize thetransmission and communion the exterior data from several documents in the constructingprocess. On the basis of the theories and the characters of devisable experiments this paperconstructed 2 VLs with Flash firstly. The students can design to carry on the appraisal of theions, at the same time, the teacher managing board which joins into the VL of devisableexperiments becomes a big luminescent spot. The teacher can change the composition of theions according to the needs of teaching. It Changes the fixation of the ions and the closenessof the software. It is not only convenient to the student's training, and also is a tool for theteacher to examine the students. It realizes openness and flexibility of the soft-ware.In the NVLs, the whole experiment processes were simulated according to the realinstruments operating process. In addition, the NVLs have real scene, simple and convenientoperation and can be promulgated on network. So the NVLs have widely practical prospect inweb-based operation training and experiment education. The comprehensive chemistry VLhas been used in several native universities, and has won prizes in "The 10th NationalMultimedia Education Software Award", which indicates it has been affirmed by experts.