基于个人智能终端的分布式虚拟现实实践教学系统的设计

Design and Development of a Personal Smart-Device Based Distributed Virtual Reality Field Teaching System

现场实习是各类教学活动中时空跨度最大、最复杂的形式。为了达到更好的实习效果,以虚拟现实理论为基础,以智能手机为媒介,融合无人机、5G物联网、地理信息系统、人工智能等技术,研发了一种基于个人智能终端的分布式虚拟现实实践教学系统。该系统由近眼显示器、移动视频采集装置和主控终端等3大模块组成,可以在室内或实习现场营造出实时三维场景,为学生提供身临其境的沉浸式交互体验,还可以根据实习区地貌特征智能规划实习路线,达到保证实习安全、增强实习效果的目的。系统内置多种工作模式可满足室内教学、现场实习和路径规划等需求。系统结构简单、成本低廉、适用性强,不但满足高校大班制实习的现实需求,而且可以为地矿油、农林水、军事、交通等学科的现场实践教学提供全新的解决方案。

The field practice is the most complicated activity among all the teaching activities. In order to achieve better teaching results,we take advantage of the computing and graphics abilities of personal smartphone,and integrate some cutting-edge technologies,including near eye display,UAV aerial imaging,5G IoT,GIS,AI algorithm for real-time route planning technologies,to design and implement a distributed virtual reality (DVR) teaching system. This system is composed of three parts,personal smart device,aerial video capture device and general control module. It works on the premise of creating a virtual world of the research object in field and/or indoor environment,and allows users to interact with it. Moreover,it can program a best path in the field based on local geomorphological features. To meet the needs of laboratorial demonstration,field-trip teaching and route planning,three working modes are designated. This DVR field teaching system is simple in structure,low in cost and has good applicability. It not only satisfies the actual needs of big group field teaching duty in colleges education in China,but also provides a new solution for the field-based teaching activities for some disciplines.