Research On The Key Technology Of Fully Mechanized Coal Face Safety Production Of Virtual Reality System

Mine is a multi-hazard complex system, virtual reality technology in coal mine safetyproduction and management, has important scientific significance and application value. Inthis paper, coal mining face of the special complexity of the mining face virtual reality systemsafety critical theory and technology for a more in-depth research, and development of safeproduction mining face virtual reality system.These key technology have been researched:(1)Fully mechanized coal face real three dimension immesion technologyThe immersion is one of the basic characteristics of virtual reality, immersivestereoscopic vision display technology as a vital supporting technology of virtual reality. Thepaper studies the desktop stereoscopic display system and multi-channel stereo displaysystem. Binocular stereo vision principle in computer vision, two-center projection algorithmto achieve the red and blue three-dimensional display system. Need to solve thethree-dimensional projection system for multi-channel nonlinear distortion, a digital image ofthe screen edge blending and stitching, four issues of data synchronization and the channelbetween the color and brightness balance. The paper presents a calibration method based onpolar coordinates from the two-dimensional plane to three-dimensional space based ontexture mapping, to solve a variety of projection plane geometric distortion; adjacent displayregion partially overlapping patchwork cancellation technology to achieve screen the edge ofthe digital image fusion splicing; frame buffer synchronization and data multi-channel visualcontrol technology to achieve the synchronization control; adjacent projection channelgamma curve matching method to carry out multi-channel screen channel between color andbrightness balance.(2) Fully mechanized coal face production system simulation Underground three-dimensional scene to establish the basis of the entire virtual realitysimulation system. Using loft method to create three-dimensional model of roadway, the useof the polygons body structure to create underground rock, the two Boolean operations, andthen form a realistic underground tunnel. Complex structure of fully mechanized coal facemachinery and equipment, simple to use OpenGL function geometric modeling is extremelydifficult, the paper uses the OpenGL and3Dmax Software, combining complex mechanicalmodeling, first of all be modeled in3Dmax, and then as a development tool VC OpenGL as amodel to display and control platform, the production model will be3Dmax generate exportto3DS format files, read the OpenGL environment after a series of model simplification anddisplay processing, in order to achieve the modeling of complex mechanical structure of thefully mechanized coal face.Most of the mining equipment belongs to multi-rigid-body systems, motion control ofequipment to use the theory of classical mechanics (vector mechanics and analyticalmechanics) have significant limitations. The paper proposed a theory of multi-rigid bodymotion simulation method. The method to many-body tree describes the topology of thesystem, relative angular velocity between the body weight and relative displacementderivative of the generalized rate, the Euler angles for the relative position coordinates in thebody, N-E equation is derived kinetic equation, mining equipment simulate the dynamics andkinematics of the law.(3) The coal mine safety training systemThe coal mine safety and technical training to improve the operating level and thetheoretical quality of coal mine employees job security technology to ensure that an effectiveway to mine safety production and one of the important safety measures. Coal mine safetytraining methods using multimedia, classroom lectures, papers exam form, content, boring,and it is often ineffective. Network game ideas and methods introduced into the field of coalmine safety training, drawing on the design idea of playing RPG online games, you will learn,education, entertainment, a combination of organic as a whole, the establishment of a newtype of coal mine safety training mode.The papers involved in the key technology to elaborate on these key technologies, including:collision detection, virtual the miners modeling and behavior control, virtual miners artificialintelligence.(4) HLA-based distributed coal mine safety emergency rescue drillPapers establish the mine emergency rescue drill system based on HLA FrameworkAgreement focus on coal federate in the HLA-based development and design processes and methods, focusing on members of the coal federal information management, informationexchange methods, and the release of information, ordering principle, federal members ofthe FOM mapping methods and data encoding, decoding, programming; federalinter-synchronization methods and simulation process control to achieve. Finally, given theHLA simulation flow chart of the threads in the Federal members of the mine.Finally Huangling No.1mine607face, for example, to the VC as a high-levellanguage development platform, OpenGL3D graphics development libraries, thedevelopment of fully mechanized coal face production safety of virtual reality applications,including coal mine production safety system simulation, security technical training, safetyemergency rescue drills, security monitoring,3D visualization and mobile monitoringmodule to achieve the3D roaming Inoue under the assessment of safety knowledge, safetyand disaster prevention in training, disaster simulation and emergency rescue, security3Dvisualization function, value and promotion of value.