【作者】 李政；

【导师】 张萍； 陶高周；

【作者基本信息】 合肥工业大学 ， 机械（专业学位）， 2024， 硕士

【摘要】 虚拟现实技术(Virtual Reality,简称VR)的概念最早由乔·拉尼尔在20世纪80年代初提出。到21世纪,互联网、传感器、人机工程领域的融合发展,使得虚拟现实技术出现了突破性的发展。如今,以虚拟现实技术为基础的沉浸式仿真系统,被广泛应用于多个领域。虚拟现实技术的优势体现在计算机生成的模拟环境能够提供非常逼真的图形和声音,为用户提供强烈的沉浸感。同时VR技术允许用户与虚拟世界中的对象进行交互,使他们不仅仅是观察者,也是参与者。然而,用户在使用VR时,常会遇到一些方向错乱问题。原因是多方面的,包括设备不能提供足够大的视场角、立体音效不够还原等。同时,虚拟现实设备也正向着无障碍包容性的方向发展,针对听障人士无法辨认音频位置的问题,虚拟现实系统中也急需解决方案。本文针对信息方位性传递效果不佳问题进行研究。在理论建设上,将感官代偿理论运用在虚拟现实技术的开发研究中,提出将方位信息从目标方位、信息特征、信息层级三个维度进行梳理,并归纳出触觉反馈方式与编码、触觉反馈位置与数量、反馈程序三维度的触觉反馈设计策略,最终构建基于触觉反馈的方位信息传递系统,将方位信息传递策略的设计流程划分为场景输入与方位信息梳理、方位信息传递任务类型与要素分析、反馈策略的设计与迭代三大部分;设计实践上,本研究设计并开发了一款头戴式触觉反馈设备及其程序,助力虚拟现实的无障碍发展;在实验研究中,规划了贴近实际体验的沉浸式虚拟空间实验,规划生动的任务流程与场景,提升实验的真实性和代表性,并通过数据分析了两种触觉反馈策略的效果,为未来的优化迭代奠定了基础。更多还原

【Abstract】 The concept of Virtual Reality(VR)was first proposed by Joe Lanier in the early1980s.In the 21st century,the integration and development of the Internet,sensors,and ergonomics have led to a breakthrough in virtual reality technology.Nowadays,immersive simulation systems based on virtual reality technology are widely used in multiple fields.The advantages of virtual reality technology are reflected in the fact that computer-generated simulation environments can provide very realistic graphics and sound,providing users with a strong sense of immersion.At the same time,VR technology allows users to interact with objects in the virtual world,making them not only observers but also participants.When using VR,it is common to encounter some disorientation problems,which can be caused by various reasons,including the device’s inability to provide a large enough field of view,insufficient restoration of stereo sound effects,and so on.At the same time,virtual reality devices are also developing towards accessibility and inclusiveness,and solutions are urgently needed in virtual reality systems to address the issue of hearing impaired individuals being unable to recognize audio positions.This article focuses on the problem of poor information directional transmission effectiveness.In terms of theoretical construction,the theory of sensory compensation is applied to the development and research of virtual reality technology.It is proposed to sort out directional information from three dimensions:target orientation,information characteristics,and information hierarchy,and summarize tactile feedback design strategies based on tactile feedback methods and coding,tactile feedback positions and quantities,and feedback program dimensions.Finally,a tactile feedback based directional information transmission system is constructed.The design process of directional information transmission strategies is divided into three parts:scene input and directional information sorting,analysis of task types and elements of directional information transmission,and design and iteration of feedback strategies;In terms of design practice,this study designed and developed a head mounted tactile feedback device and its program to assist in the barrier free development of virtual reality;In the experimental research,an immersive virtual space experiment that is close to the actual experience was planned,with vivid task processes and scenes to enhance the authenticity and representativeness of the experiment.The effects of two tactile feedback strategies were analyzed through data analysis,laying the foundation for future optimization iterations.更多还原