Eye-shaped keyboard for dual-hand text entry in virtual reality

We propose an eye-shaped keyboard for high-speed text entry in virtual reality (VR), having the shape of dual eyes with characters arranged along the curved eyelids, which ensures low density and short spacing of the keys. The eye-shaped keyboard references the QWERTY key sequence, allowing the users to benefit from their experience using the QWERTY keyboard. The user interacts with an eye-shaped keyboard using rays controlled with both the hands. A character can be entered in one step by moving the rays from the inner eye regions to regions of the characters. A high-speed auto-complete system was designed for the eye-shaped keyboard. We conducted a pilot study to determine the optimal parameters, and a user study to compare our eye-shaped keyboard with the QWERTY and circular keyboards. For beginners, the eye-shaped keyboard performed significantly more efficiently and accurately with less task load and hand movement than the circular keyboard. Compared with the QWERTY keyboard, the eye-shaped keyboard is more accurate and significantly reduces hand translation while maintaining similar efficiency. Finally, to evaluate the potential of eye-shaped keyboards, we conducted another user study. In this study, the participants were asked to type continuously for three days using the proposed eye-shaped keyboard, with two sessions per day. In each session, participants were asked to type for 20min, and then their typing performance was tested. The eye-shaped keyboard was proven to be efficient and promising, with an average speed of 19.89 words per minute (WPM) and mean uncorrected error rate of 1.939%. The maximum speed reached 24.97 WPM after six sessions and continued to increase.

Virtual Facilit Layout Design Using Virtual Reality Techniques

Manufacturing facility layout design has long been recognized as one of the most critical and difficult design tasks in manufacturing industries. Traditional layout methods can not fully solve this complex spatial layout problem. Virtual reality (VR) is a new form of human\|computer interaction, which has the potential to support a range of engineering applications. This paper discusses the reasons why manufacturing facility layout design is considered to be an appropriate new area of VR utilization. A VR\|based layout design framework is proposed. The virtual environment construction issues are discussed. An example of the immersive VR application of facility layout is examined.

Immersive Display Interface Specification Standards in Virtual Manufacturing:A Prototype

In this paper we briefly describe our effort in developing standards for immersive display interfaces in virtual manufacturing.This work is being conducted in collaboration with the National Institute of Standards and Technology(NIST).First we review the concept of virtual manufacturing,discuss its scope and lay the contextual foundation for describing our application.Next we describe a prototype implementation of immersive display interfaces in virtual manufacturing.This prototype is based on processing the output of a factory simulation model.Finally we describe the standards emerging from this prototype.

Study on Application of Virtual Reality Technique in Environmental Artistic Design

With the advent of the information age, people＇ s lives have been changed unknowingly owing to lots of modem technology means. For the environmental artistic design, the traditional mode of environmental artistic design is broken through after the emergence of computer technology and virtual reality technique, which makes the scheme and application of virtual reality technique in environmental artistic design to own more practical value. In this paper, the virtual reality technique and its practical application in environmental artistic design are set forth, and the profound influence on the actual design by the virtual reality technique is studied with expectation of enlightenment for broadening the thought of environmental artistic design.

Integration of Manufacturing Services into Virtual Environments over the Internet

Virtual reality (VR) is a rapidly developing technology that has a wide spectrum of industrial and commercial applications. Networked (distributed or shared) virtual environments (VE) are of growing interest to modern manufacturing industry; a dominating use of networked virtual manufacturing environments (VMEs) is on-line visualisation and collaborative control of 3D information. This has to be supported by real-time data transfer. To meet a broad range of common requirements for Internet-based VE communications, particularly for virtual manufacturing and collaborative design and control, this paper presents a networked virtual environment system that is designed to support networked virtual design and manufacturing. The system is implemented with manufacturing message specification (MMS) standards so as to integrate a range of manufacturing services into networked VEs over the Internet.

虚拟研究开发中心(Virtual R&D)——基于网络的异地合作设计模式

研究了虚拟研究开发中心这种基于网络的异地合作设计模式。对虚拟研究开发中心建立的背景进行了分析 ,提出了一种体系结构 ,并对建立虚拟研究开发中心的可行性、对我国制造业的意义和目前要做的工作进行了讨论。

基于智能虚拟生产车间的机械制造课程群教学实践

在机械制造类课程中,由于大型装备制造环境危险且工艺复杂,导致学生难以利用实体设备或实际生产制造车间开展实物实验,极大限制了学生工程实践能力的提升。基于此,该文建立了面向机械制造课程群的智能虚拟生产车间和虚拟仿真实验教学方法,通过WebGL技术标准建立可交互操作的涡轮发动机叶轮全自动加工虚拟车间,并在此基础上开发与实体数控机床、机械手、AGV运输小车等实验设备对应的虚实融合接口以及机械制造与控制实验功能,形成虚拟仿真实验教学软件,供机械类相关课程理论与实践教学使用。相关成果已应用于多门机械制造类课程教学中,学生专业知识水平和工程应用能力提升显著,教学效果良好,证明了该实践教学方法的合理性与实用性。

现代信息技术与生物学实践教学深度融合探索

现代信息技术在生物学实践教学中得到广泛的应用,有直观展示知识内容、虚拟仿真实验、师生推拉式互动等,在激发学生的学习兴趣、培养创新能力等方面发挥作用。通过现代信息技术与实践教学的融合可以优化实践教学内容、创新实践教学形式,破解传统实践教学中的难题,培养学生实践能力与创新精神。

Applications and research trends of digital human models in the manufacturing industry

Virtual reality(VR)has been widely used in various manufacturing industries,and VR-based virtual manufacturing has received significant attention in the current intelligent manufacturing era.Digital human models(DHMs)are essential for virtual manufacturing applications.Additionally,researching new applications of DHMs has developed into an important academic research field.This paper aims to identify the applications and research trends of DHMs in the manufacturing industry and to provide a reference for the continued development of virtual manufacturing and DHMs.We selected a total of 49 related articles from a large number of articles published between 2014 and 2019.The applications of DHMs in the manufacturing industry are analyzed from different perspectives and various relevant technical limitations are discussed.The results indicate that the applications of DHMs differ significantly between different types of fields.The automotive industry is the main application field for DHMs,and assembly/maintenance simulations and evaluations are the main application types.Additionally,there are still some limitations in the establishment of virtual environments,motion control,and DHM evaluation that should be addressed.Finally,research trends in the application of DHMs are illustrated and discussed,including the planning and assessment of human-robot collaboration systems,the combination of DHMs and augmented reality,and improved motion planning for DHMs.In summary,the application of DHMs can improve the realism and effectiveness of virtual manufacturing,and DHMs will be more widely and deeply studied and applied in various manufacturing industries in the near future.

虚实深度融合的工程实践教学体系探索

现代航空产业快速发展对人才的创新实践能力提出较高要求,然而传统工程实践教育与上述人才培养新需求脱节。对此,通过虚拟仿真教学手段丰富工程实践教学资源,并构建与之相适应的课程体系、教学环境、教学模式和质量保障手段,建成虚实深度融合的工程实践教学体系,有效提升人才培养质量,为我国工程实践教学改革提供新思路和新方法。

虚实结合的智能制造实训教学模式探索

该文阐述了校智能制造实训平台的建设背景和体系架构,并以刀柄为教学案例,介绍了产品设计、加工、物流、管理四个环节中,虚实结合教学方法的具体实现形式。在实训教学中,学生分组扮演不同环节的工程师,合作完成整个实训过程。从教学效果来看,虚拟环境能够辅助学生熟悉和掌握设备使用方法,有助于提升学生的实操能力和创新意识。

新工科时代智能制造虚拟仿真平台建设探索

根据新工科人才培养目标和产业发展需求,分析智能制造虚拟仿真训练学习对本科生交叉学科能力培养的作用;探索高校工程训练中心如何依托本校优势学科构建材料成型智能制造虚拟仿真实验平台,应用虚拟仿真、人工智能和信息技术等最新技术手段,规划虚实一体化模式的虚拟仿真实训项目和任务导向明确的虚拟仿真训练,提升学生工程能力,创设学科交叉融合的学生虚拟智能控制创新任务,提升学生应用交叉学科运用能力和创新能力;运用云技术构建虚拟仿真平台教学管理体系,提高工程训练中心管理水平和教学效率,满足未来社会对人才需求的变化与挑战。

数字化技术在农业机械设计及制造中的应用

数字化技术是指利用计算机和信息技术进行数据处理、分析和管理,以提高效率、精度和决策能力的技术手段,可以极大地提高机械设计和制造效率、精度。该文概述了目前应用较为广泛的3种数字化技术,即分析计算机辅助设计(CAD)、虚拟现实(VR)技术和制造执行系统(MES)技术在农业机械三维建模、仿真、预测性维护及实时监控生产过程中的应用原理及优势,优化生产计划,及时发现和解决生产中的问题,保证生产过程的高效和质量的一致性。数字化技术的应用,大大提升了农业机械设计和制造的水平,为农业机械的智能化、精细化发展奠定了坚实的基础。

智能工厂MINI制造单元虚拟仿真平台开发

针对航空薄壁件在加工中易变形、工件振动、耗时长的现状,提出了基于Unity3D的智能工厂MINI制造单元虚拟仿真平台的设计方案,解决了薄壁叶片在实际生产过程中效率低下,质量参差不齐的问题。通过智能工厂MINI制造单元的虚拟仿真验证结果表明,智能工厂MINI制造单元不仅能够完成航空薄壁件的批量加工,大大提高其生产效率,还能通过Unity3D的虚拟仿真技术,降低生产成本和潜在的风险,推动航空制造业向智能化方向发展。

基于虚拟现实技术的空间设计研究——以文创空间为例

为获得虚拟现实技术在文创空间的设计手法及设计框架。首先,介绍虚拟现实技术在环境空间设计中的应用方面,其次,通过文创空间案例分析虚拟现实技术的实际应用及设计手法,最后总结虚拟现实技术在文创空间设计中的优势及未来发展方向。为虚拟现实视角下环境空间设计,提供了新思路和方法。虚拟现实技术的应用正在逐步形成新时代环境空间设计的新范式,为环境空间设计领域带来了创新。

基于虚拟现实技术的康复训练在脑瘫患儿中的应用效果

目的:探讨基于虚拟现实(VR)技术的康复训练在脑瘫患儿中的应用效果。方法:选取2020年5月至2022年7月该院收治的102例脑瘫患儿进行前瞻性研究,采用随机数字表法将其分为对照组与观察组各51例。对照组采用常规康复训练,观察组采用基于VR技术的康复训练。比较两组训练前后粗大运动功能分级系统(GMFCS)分级、上肢功能[上肢技能质量量表(QUEST)]评分、平衡能力[Berg平衡量表(BBS)]评分、康复依从性和生活自理能力[改良Barthel指数(MBI)]评分。结果:训练3个月后,观察组GMFCS分级优于对照组,QUEST评分、BBS评分、康复依从性评分和MBI评分高于对照组,差异均有统计学意义(P<0.05)。结论:基于VR技术的康复训练可提高脑瘫患儿的康复依从性,改善其上肢功能、粗大运动功能和平衡能力,从而提高其生活自理能力,效果优于常规康复训练。

数字视角下现代展厅空间优化设计探究

研究探讨了现代展厅空间优化与数字技术在展厅设计中的应用,对展厅设计理论和应用分析提出了一系列设计方法,通过合理的动线设计、功能区域划分、灵活的空间配置,以及虚拟现实、增强现实和智能导览系统等技术的应用,提升展览的互动性和参与感。

虚实结合的智能制造实验教学平台建设与实践

在“中国制造2025”背景下,智能制造人才培养成为高校培养人才的重中之重。为满足智能制造专业课程实验教学要求,将数字化制造生产线虚拟仿真引入到实验教学中,构建了虚实结合的智能制造实验教学平台,建立了虚实结合的综合实验教学体系。通过该实验教学平台能够解决现有智能制造专业课程实验教学中存在的设备空间受限、安全隐患、演示为主等问题,虚实结合的实验能够增加学生的实践机会,保证实验教学效果,培养学生的综合创新实践能力。

基于虚拟现实技术培训对初级创伤救治教学质量的影响

目的 比较基于虚拟现实技术培训与传统教学培训对医学生初级创伤救治(PTC)培训的教学效果。方法 以福建医科大学90名本科生为研究对象,随机分为虚拟现实(VR)教学组和传统组,每组各45例。VR组结合VR技术进行PTC培训,传统组采用演示文稿及现场教学模式进行培训;分别在培训前后进行技能评估与理论测试。结果 培训后,两组理论测试成绩比较,差异无统计学意义(t=1.971,P=0.462);但VR组技能评估成绩高于传统组(t=-3.482,P<0.001)。与传统组相比,VR组的学生获得了更高的学习效益。VR体验感评分显示:96%的学生对VR教学方式感到满意。结论 基于VR培训提高了医学生PTC的教学质量。

面向教研一体化的数字化制造实验教学平台搭建与探索

为了更好地将高校人才培养目标与社会需求保持一致,培养出国家急需的数字化智能制造类专业人才,该文结合车辆工程专业整车数字化制造人才需求,搭建一套数字化制造软硬件实验教学平台,并进一步针对该平台的实验教学与科研一体化功能进行分析探索。该平台主要由机器人系统、装配工艺仿真软件系统等组成,通过软件系统对物理世界的多维度、多领域、多视图的装配工艺数字仿真模拟,并结合机器人装配路径规划、多机协同等工艺轨迹仿真,把物理世界的信息综合在数字世界中,构造一个虚实结合的数字孪生教学系统。该装配工艺数字化实验教学平台的搭建,对整车等复杂工业产品制造产业升级背景下的人才培养具有较大价值,也为国家数字化智能制造行业人才培养中的教学方法创新提供参考。