The Study On Modeling The Virtual Operating Environment Of Large-scale Equipment And Virtual Experiment Of Its Capability

Virtual Reality(VR)is a technique which refers to the multipurpose use of Computer Graphics System and various kinds of display and control interface devices,provided sense of immersion in three-dimensional environments which is interactive and generated on the computer.VR technique has overcomed drawbacks of the traditional man-machine interface mode.It is to change the way of getting information,improve the harmonious degree of man-machine,represent the latest trend of man-machine interface mode,so it arouses wide concern and get more and more application.Virtual Reality Modeling Language(VRML)is a new language which rises in recent years.It can realize realistic effects by establishing a virtual scene.In establishing a virtual scene,especially,large scene applications,VRML has particular advantages.VR technique was used in the development of new agriculture machine.It can realize that the designer and product user feedback information with each other during the design stage,make the designer profoundly absorb and accept the advise of new products.At the same time,virtual tests do not be limited by space time and frequency.It can predict the product performance,promote to improve the designed quality of products,reduce designed cost and risk.This paper introduces the key technologies to construct the interactive cropland virtual reality scene.By using VRML technology,an interactive cropland virtual scene's model has been designed.And the key skill during the making model is also discussed in detail about in modeling,transformation,decoration,interaction and so on.In this virtual reality scene,user can directly interact with crop,field,roadway and so on from virtual reality scenes and thus have the experience of self participations,which consequently gives you the same experience as you were in the natural world.And it also provided a virtual space and interface for Virtual Test of agriculture equipment in this cropland virtual reality scene.