基于虚拟现实的英语远程多媒体教学系统设计  

Design of English long⁃distance multimedia teaching system based on virtual reality

作　　者：李培云[1] 宋志峰 LI Peiyun;SONG Zhifeng(Hohhot University for Nationalities,Hohhot 010010,China;College of Engineering,Henan University,Puyang 457000,China)

机构地区：[1]呼和浩特民族学院,内蒙古呼和浩特010010 [2]河南大学濮阳工学院,河南濮阳457000

出　　处：《现代电子技术》2020年第14期161-163,169,共4页Modern Electronics Technique

基　　金：国家自然科学基金项目(61501365)。

摘　　要：传统的英语远程多媒体教学系统,交互能力较差,导致学生对于英语的学习热情不高,因此文中设计基于虚拟现实的英语远程多媒体教学系统。该系统选用3D扫描仪以三维立体检测的方式辅助建模,三维视觉显示设备显示虚拟的教学立体场景,手套和操作杆等交互设备发送学习指令、接收教学信息反馈,实现该教学系统在硬件上的设计。利用小平面模拟实物曲面,参考误差函数调整虚拟教学场景中的模块尺寸,根据像素分辨率计算公式调整模块像素,以此搭建虚拟场景。通过VRML语言程序模拟设备功能,根据响应函数完成教学程序的触发、数据传递以及版面转换,至此实现基于虚拟现实的教学系统设计。实验结果表明,与传统的英文远程多媒体教学系统相比,所设计教学系统的人机交互能力更强,学生的学习兴趣更浓厚。由此可见,所设计的教学系统可以运用到实际的英语教学工作中。As the traditional English long⁃distance multimedia teaching system has poor interactive ability,which causes the students′low enthusiasm for the English learning,a English long⁃distance multimedia teaching system based on virtual reality is designed.In the system,3D scanner is used to aided modeling with the way of 3D detection,the 3D visual display equipment is applied to display the virtual teaching 3D scene,the interactive equipments such as gloves and operating lever are used to send the learning instructions and receive the teaching information feedback,so as to realize the design of the teaching system on the hardware.The real surface is simulated with a small plane,the module size in the virtual teaching scene is adjusted by means of the reference error function,and the module pixel is adjusted according to the calculation formula of the pixel resolution,so that the virtual scene is constructed.The device function is simulated through the VRML language program,the teaching program′s trigger,data transfer and layout conversion are completed according to the response function,and thus the teaching system design based on virtual reality is realized.The experimental results show that,in comparison with the traditional English long⁃distance multimedia teaching system,the designed teaching system has stronger human⁃computer interaction ability,and the students are more interested in learning.It can be seen that the designed teaching system can be applied to the actual English teaching work.

关 键 词：远程多媒体教学 系统设计 虚拟现实 辅助建模 人机交互 系统测试 

分 类 号：TN912.34-34[电子电信—通信与信息系统] G434[电子电信—信息与通信工程]