Shearer Experiment Teaching System Based On Virtual Reality Technology

In order to realize the important strategic measure of "Made in China 2025",the Ministry of Industry and Information Technology and the Ministry of Education have successively issued a number of policies to promote the construction of "new engineering",promote the innovation of science and technology,and improve the level of intelligent technology and equipment.Virtual Reality(VR),as an emerging technology,is the preferred hot major in the new engineering field.Moreover,based on the comprehensive coverage of 5G technology in China and the rapid development of hardware equipment,the virtual reality industry will break out in an all-round way and become the industry with the most promising future.In order to realize the important strategic initiative of "made in China 2025",the ministry of industry and information technology and the ministry of education have successively issued a number of policies to promote the construction of "new engineering projects",promote the innovation of science and technology,and improve the level of intelligent technology and equipment.As an emerging technology,Virtual Reality(VR)is a hot major in the new engineering field.And based on the rapid development of 5G technology in China,the virtual reality industry will break out and become the most promising industry in the future.In recent years,coal mechanization and modernization have made great progress,and large coal machine equipment has been widely used in coal mining operations.Coal mining machine is one of the important equipment to realize the mechanization and modernization of coal mine,but due to the particularity of coal mining machine working environment,there are many limitations in practice teaching,the traditional training method is obviously not suitable for the training needs of high-risk industries.With the development of intelligent and green coal mines,modern information technologies such as virtual reality have been gradually popularized in the coal industry,making experimental training based on virtual reality technology a reality.This technology makes up for the shortage of traditional practical training teaching in China's coal industry and improves the training efficiency and quality.Many universities in China have established virtual reality technology teaching and research platforms according to their own research and teaching needs.In view of the present our country on the virtual experiment system of shearer research relative lag,the status quo of the lack of related research,based on the analysis of this paper summarizes the current research status of the virtual experiment teaching platform technology at home and abroad,on the basis of this article is based on virtual reality technology,developed the experiment teaching system of coal winning machine,can provide students with a safe and reliable experiment environment,experimental method is novel,intuitive is strong wait for an advantage,through a series of human-computer interaction,the platform can improve the students' interest in learning,and help students to master relevant knowledge and theory.The application of virtual reality technology to realize the experimental teaching system of coal mining machine promotes the development of modern teaching and training,which will be the development trend of practical training in the future.The main research contents of this shearer experimental teaching system are as follows:Firstly,based on the Solid Works modeling platform,the 3d model of each part of the double-drum shearer is accurately established according to the structural dependency relationship between each part of the shearer,and the entire shearer is assembled strictly according to the model size.This paper analyzes the motion relationship between shearer's actuators,designs the schematic diagram of shearer's hydraulic system,and builds a three-dimensional model of the hydraulic station based on Solid Works.To facilitate the subsequent display and analysis in the virtual system scene.Secondly,based on the vertex and Polygon structure of the 3d model in computer space,combined with the scene rendering requirements in Unity3 D,the reduction of the data of the 3d model such as coal miner was optimized,and a simplified model matching the performance of the system was obtained by using software such as 3Dmax and Polygon Cruncher.And according to the requirements of the design of virtual system function,the corresponding parts of the motion posture and motion path,based on the animation of the key frame technology to plan and design posture,with the help of the photography table track editor,the model in different frame number path trajectory and attitude change description,and achieve animation baking.Thirdly,based on the virtual scene technology,the design and implementation of the environment model,material map and auxiliary scene in the virtual system are completed through the analysis of the expected effect of the system function module.The design and implementation of scene roaming system are completed,and the simulation scene of virtual experimental system is built.Finally,based on the development engine of Unity3 D and with the help of Mecanim system,the automatic demonstration module of shearer experimental teaching system is realized through Amimator Controller.The design of UGUI is realized based on the technology of human-machine interface interaction.Based on the collision detection technology and ray detection principle,the manual interaction of the coal miner model in the virtual system is realized.The simulation model of hydraulic pump station is built in Unity3 D engine.This paper analyzes the working principle of hydraulic heightening system of shearer cutting part and realizes the visual interaction of hydraulic heightening system.