Study On The New Construction Mode Of 3D Multi-Function Dynamical GC Virtual Laboratory

Virtual reality technology is one of the information technology which developing faster in recent years. Virtual reality technology, multimedia technology and network technology are the three computer technologies with best prospects. With the development of computer technology and it's becoming increasingly related to other disciplines, virtual reality technology has received extensive attention and has been widely applied in scientific research and virtual training. It is an important development direction to develop virtual instrument and virtual laboratory. At present,2D Virtual Laboratory and virtual instrument based on 2D image and graphics technique has haven many successful instances, and its development model and achievement techniques have been relatively mature, but can not satisfy the user pursuit of immersion and interaction on simulation software, so the full three-dimensional, high-interactive, network virtual laboratory has become a research focus.As an exploration in the aspects of construction model and technique, this issue selects gas chromatography as the object to study. The study involved construction of 3D multi-function dynamical GC virtual laboratory. These functions include in virtual character guidance, simulated instrument operation and date processing, faults diagnosis and maintenance of instruments. This kind of GC virtual laboratory has important research value and wide application prospect.This paper first discussed solutions of construction a virtual lab by virtual reality technology, Including architecture pattern, implementation method and technical route, a new construction mode of the 3D multi-function dynamical virtual laboratory based on Virtools technology was proposed after comprehensive comparison, and the structural framework and the function modules of the model were analyzed, the key technology was studied. The overall design of the GC virtual laboratory was performed in this paper, core module and main functions were defined. It was confirmed that the difficulty was to establish mathematical model among parameters in chromatography separation process, draw chromatographic curves dynamically in 3D scene and perform interaction design of multi-function. Based on the chromatographic theory, the mathematical model on the relation of parameters among carrier gas flow rate, separation temperature, injection volume and retention time was constructed. This model was taken as the basic to establish the virtual laboratory. Drawing chromatographic curves dynamically by changing the separation conditions is realized through compiling and optimizing program, and also many other functions including experimental design, experimental condition optimization, fault diagnosis and maintenance of GC virtual instrument and real-time trace evaluation are realized.This GC virtual lab with strong immersion, complete function, high interaction and so on. The open architecture is propitious to upgrade the experimental content and instrument configuration. At the same time, helpful experience is got for future virtual lab's development.