Research And Implementation Of Virtual Reality Simulation System For Oilfield Combination Station

Virtual reality technology emerged in the 20th century end of the 1980s. Itincludes computer Graphics, multimedia technology, artificial intelligence,computer interface technology, sensor technology and highly parallel real-timecomputing technologies, and a number of human behavioral researches of keytechnologies. It is the computer hardware, software and various sensors posed3D artificial environment——virtual information environment is achievable andcan not achieve the physical, functional things and the environment, the userinputs this environment, it can interaction. Virtual reality technology has threefundamental characteristics. The first characteristic is the immersion, letparticipants experience personally true feeling. The second characteristic is theinteractivity, the virtual reality interactive characteristic mainly is realizes thehuman natural skill through the use hypothesized interactive interface equipmentto the hypothesized environment object alternately inspection and operation. Thethird characteristic is the imagination, said from the graph angle, the traditionalcomputer graphics emphasized the three dimensional scene on the screen twodimensional display, virtual reality technical emphasis three dimensional graphsolid display. Virtual reality technology to study the main contents include: theintegration of people and scenes technology, the simulated target objectstechnology, 3D terrain modeling technology, graphics and video with real-timegenerated synthetic technology, VR interfaces in the application of intelligentcomputer systems, multi-dimensional information expression, real-timeprocessing and concurrent processing OOP (Object Oriented Programming)technology, high-performance computer graphics processing hardware researchand distributed virtual environment, based on network environment virtualreality research.This article, the basic theory is a virtual system as visual scene and 3Dmodeling of two parts exploring. The visual scene as a computer generatedmainly consists of the following three steps: (1) the calculation of a series ofgraphics generation. Series include color, light, movement and a sense ofthree-dimensional sense;(2) The calculation of the generated or obtained directlyfrom the images already compressed in a series of background images;(3) Afterscanning the graphics used in the same coordinate system and uniformbackground. Visual scene, the computer images are based on the needs of theenvironment, using the given conditions and models in terms of image data andgraphical data generated after the generation process shown in figure 1. By theplan, we can see that a decision on visual scene images of three conditions: (1)generated conditions and models, (2) image data, (3) graphics data.Vision generation depends on the image as the first generation modelsgenerated with the conditions. Mathematical methods used to establish theFig 1 Vision generationFaxintegration,integration,ObtainGeneratedGeometriProjectionGenerated Showrequired 3D geometric scene description, a complete three-dimensional model,through the scene of the X-ray changes will be 3D geometric description intotwo-dimensional maps and determine all the scenes can meet, and then throughlight and material models for all to meet color, and ultimately generate a series ofimages.And build a 3D simulation model of objects;it is first necessary togeometric objects modeling. The so-called geometric modeling refers to the 3Dvirtual environment can shape and space objects of the subsidiary naturedescribed. But only a brief description of the object "static" 3D geometric form isnot enough, change must take place with the virtual environment, collisions,capture, shrinking and enlarging surface deformation and changes in thedynamics of change. This is the so-called kinematics modeling. Virtual objectsincluding physical modeling of the target quality, weight, surface veins (glossy orcrude), hardness, shape change model, and these characteristics combinegeometric modeling and rules of conduct, a truer virtual physical model. Inaddition to sports and physical characteristics of the target users of directresponse behavior mathematical modeling, but also the need to establish a virtualenvironment with the characteristics of the target user input to the model, whichembodies the virtual objects autonomy identity. For example : the clocks hangingon the wall, when you lead five minutes later approached watched targets thanwhen you watch the operation of the previous five-minute distance. This is theObject behavior modeling.Computer Graphics based on the predecessors of the study, in recent yearsthe development of virtual reality systems to be quickly developed tools haveemerged several products. MultiGen is the famous real-time 3D graphicsworkstations modeling tool simulation software system from MultiGen companyproduct, and its superior performance, system reliability, stability is good, withsimilar modeling software systems incomparable advantages. MultiGen Creatoras the main interface into the tool window and documents show windows of twoparts. The tool window (also known as modeling tool) located in the left maininterface can be launched by clicking the corresponding button of the toolwindow and tools window can be dragged to the interface with the mousearbitrary position. The main tool window: Mode,Face,Maneuver,Geometry,Hierarchy,Properties,Texture,Edge Construction,Point Construction,CreateTools,Duplicate,Modify Geometry,Modify Face,Modify Vertex,ModifyTexture. According to the paper from the main window menu, the adjustmenticons modules, vision control module, tracking control plane modules, a showmodules, alternative control module, graphics view, hierarchy view, andcoordinates control panel several components. It encompasses several commonlyused basic modeling module functions: real-time 3D model generation, real-time3D models optimization, database reorganization, a data format conversion,veins technology, examples of technology, technical details of grading, freedomdegrees technology. Open Flight data format is Multigen roots. Throughstructural adjustment hierarchy view, a database can organize, model generation,editing changes, the definition of relationship to nature and structure, therebyachieving world-modeling and adjustment models. OpenGVS developed by thecompany Quantuan3D is devoted to 3D view of the development tool. It haspowerful functions and substantial function, the control function nearly 3,000images, covering a group of high-level, object-oriented applications C++interface directly structure in the world-leading 3D graphics engines (OpenGL,Glide and Direct3D). Fully meet the development of large complex scenesimages generated system requirements. OpenGVS various software modulesoperating time series shown in figure 2.Joint oil and gas fields station will lose the oil fields is an important part ofthe process, a direct bearing on the quality of imported crude oil, the processesrelated systems characterized by tight, operation procedures strictly, the situationis complex and ever-changing operating system. Joint stations include: oil andgas process systems, public works, for water injection, sewage treatment, fireprotection, transmission, as well as the necessary production facilities.GV_sys_init() GV_user_init() Rseusbosutracnetsia allnyd mthoed sutlaet eGV_sys_proc()GV_user_proc()GV_user_events()Small objects functionThe Small camera functionCrossings retail functionSmall graphics processingUsethe graphics function of OpenGL functionGV_sys_shutdown() GV_user_shutdown() reJsoobubricnegs ,o trh feo cr ltohseu rree lfeuansec toiofnFig 2 The relation among software moduleNext to the mission of this analysis as a starting point, with athree-dimensional model examples of a basic process, and expounded the basicmovement scenes. Model building process include: data collection, identificationof crops levels chart, the establishment of appropriate models, the removal ofredundant polygon, add shadows, with system veins. Scenes activation ofprogramming including: 3D engine design, and included in the model databasecontaining substantially, mobile, shrinking and enlarging, and the function ofseveral basic rotary control function. Finally, a brief discussion of the system orother virtual reality systems will encounter 3D geometric transformation,collision detection technology, and technical details of the levels of keytechnologies.