分析虚拟数控技术在教学中的重要性.doc

分析虚拟数控技术在教学中的重要性1 虚拟现实技术简述1 virtual reality technology briefly 虚拟现实技术，简单地说，就是借助于计算机技术及硬件设备，实现一种人们可以通过视、听、触、嗅等手段所感受到的虚拟幻境。虚拟现实作为一项尖端科技，它集成了计算机图形技术、计算机仿真技术、人工智能、传感技术、显示技术、网络并行处理等技术的最新发展成果，由计算机图形构成三维数字模型，并编制到计算机中去生成一个以视觉感受为主，也包括听觉、触觉的综合可感知的人工环境，提供给人们通过计算机对复杂数据进行可视化操作与交互的一种全新方式。虚拟现实的最大特点是用户可以用自然方式与虚拟环境进行交互操作，改变了过去人类除了亲身经历，就只能间接了解环境的模式，从而有效地扩展了人们的认知手段和领域。Virtual reality technology, in a nutshell, is with the aid of computer technology and the hardware equipment, realize a kind of people can see, hear, touch, smell, feel the virtual dreamland. Virtual reality as a cutting-edge technology, which integrated the technologies of computer graphics, computer simulation technology, artificial intelligence, sensor technology, display technology, the latest development of network technologies such as parallel processing, made 3 d digital model, computer graphics and document into the computer generates a mainly visual perception, also includes hearing, touch integrated perceived artificial environment, provide to people through the computer to manipulate complex data visualization and interaction of an entirely new way. The biggest characteristic of virtual reality is the user can use the natural way to interact with virtual environment operation, changed the human in addition to the experience in the past, can only indirectly understand environment model, which effectively expanded the peoples cognitive approach and field. 2 虚拟现实系统的基本类型Two basic types of virtual reality system 根据用户参与虚拟现实的不同形式，可把虚拟现实系统划分成四类：According to different forms of user participation in virtual reality, virtual reality system is divided into four categories: 3.1桌面式虚拟现实系统3.1 desktop virtual reality system 桌面式虚拟现实系统也称为简易型虚拟现实系统，它是利用个人计算机和低级工作站进行仿真，将计算机的屏幕作为用户观察虚拟境界的一个窗口，使用者通过键盘、鼠标便可与虚拟环境进行交互。这种系统的特点是结构简单、价格低廉，因此应用比较广泛，是一套经济实用的系统。但桌面式虚拟现实系统会受到周围现实环境的干扰，参与者缺少完全的沉浸，缺乏真实的现实体验。Desktop virtual reality system, also known as simple type virtual reality system, it is the use of personal computer simulation and low-level workstation, computer screen as the user to observe the virtual realm of a window, the user through the keyboard and mouse can interact with the virtual environment. The characteristics of this system is of simple structure, low cost, so the application is more widely, is a set of economical and practical system. But desktop virtual reality system will be affected by the surrounding reality environment interference, participants lack of fully immersed, the lack of a real practical experience. 3.2沉浸式虚拟现实系统3.2 immersive virtual reality system 沉浸式虚拟现实系统是一种高级的虚拟现实系统，它提供一个完全沉浸的体验，使用户有一种置身于虚拟境界之中的感觉。它利用头盔式显示器或其它设备，把参与者的视觉、听觉和其它感觉封闭起来，并提供一个新的、虚拟的感觉空间，并利用位置跟踪器、数据手套、其它手控输入设备、声音等使得参与者产生一种身临其境、全心投入和沉浸其中的感觉。沉浸式虚拟系统是一套比较复杂的系统，它的优点是用户全身心地沉浸到虚拟世界中去，缺点是系统设备价格昂贵，难以普及推广。Immersive virtual reality system is a kind of advanced virtual reality system, it provides a complete immersion experience, users have a sense of place oneself in the virtual realm of. It USES the low monitors or other equipment, the participants of the visual, auditory and other sensory closed up, and provide the feeling of a new, virtual space, and use the location tracking, data glove and other manual input devices, such as sound enables the participants to produce a immersive, commitment, and the feeling of immersion. Immersive virtual system is a complex system, it has the advantage that the user fully immersed in the virtual world, the disadvantage is that the system equipment is expensive, difficult to popularized. 3.3增强式虚拟现实系统3.3 enhance type virtual reality system 增强式虚拟现实系统是把真实环境和虚拟环境组合在一起的一种系统，它既允许用户看到真实世界，同时也可以看到叠加在真实世界的虚拟对象，这种系统既可减少对构成复杂真实环境的计算，又可对实际物体进行操作，真正达到亦真亦幻的境界。Reinforcement virtual reality system is the real and virtual environment together in a system, it allows the user to see the real world, also can see the stack in the real world of the virtual object, the system can not only reduce the calculation for complex real environment, but also to the actual object, really reach the state is also true. 3.4分布式虚拟现实系统3.4 distributed virtual reality system 分布式虚拟现实系统是利用远程网络，将异地的不同用户联结起来，多个用户通过网络同时参加一个虚拟空间，共同体验虚拟经历，对同一虚拟世界进行观察和操作，达到协同工作的目的，从而将虚拟现实的应用提升到了一个更高的境界。Distributed virtual reality system, is the use of remote network to link together different ground of different users, multiple users via the Internet at the same time to participate in a virtual space, virtual experiments, together on the same virtual world for observation and operation, achieve the goal of collaborative work, which will increase the application of virtual reality to a higher level. 3. 虚拟现实技术的基本特征3. The basic characteristics of virtual reality technology 虚拟现实技术具有以下四个基本特征:Virtual reality technology has the following four basic characteristics: 沉浸性指用户感到作为主角存在于模拟环境中的真实程度。虚拟现实技术是根据人类的视觉，听觉的生理心理特点，由计算机产生逼真的三维立体图像，使用者戴上头盔显示器和数据手套等交互设备，便可将自己置身于虚拟环境中，使用者与虚拟环境中的各种对象的相互作用，就如同在现实世界中的一样。Indulge sex - refers to the user feel as a leading role in simulating the real environment. Virtual reality technology is based on human visual and auditory physiological and psychological characteristics, lifelike three-dimensional image generated by the computer, users wear a helmet mounted display and data interactive equipment such as gloves, it can be yourself in a virtual environment, the user interaction with various objects in the virtual environment, like in the real world. 交互性指用户对模拟环境内物体的可操作程度和从环境得到反馈的自然程度。虚拟现实系统中的人机交互是一种近乎自然的交互，使用者不仅可以利用电脑键盘，鼠标进行交互，而且能够通过特殊头盔，数据手套等传感设备进行交互。Interactivity - refers to the user objects operational level within the simulation environment and get feedback from the environments natural degree. Human-computer interaction in virtual reality system is a kind of close to natural interaction, the user not only can use the computer keyboard, the mouse to interact, but also through the special helmet, sensing equipment such as data glove to interact. 多感知性是指除了一般计算机技术所具有的视觉感知之外，还有听觉感知、力觉感知、触觉感知、运动感知，甚至包括味觉感知、嗅觉感知等。由于虚拟现实系统中装有视、听、触、动觉的传感及反应装置，因此，使用者在虚拟环境中可获得视觉、听觉、触觉等多种感知，从而达到身临其境的感。Perceptual - refers to in addition to the visual perception of computer technology, force sensing and auditory perception, perception, tactile perception, motion perception, and even taste and olfactory perception, perception. Due to see, hear, touch, are installed in the virtual reality system, kinesthetic sensing and reaction device, therefore, the user in a virtual environment for visual, auditory, tactile and other sensory, thus to achieve the immersive feeling. 构想性是指虚拟现实技术具有广阔的可想像空间，可拓宽人类的认知范围，复合土工膜不仅可再现真实存在的环境，也可以随意构想客观不存在的甚至是不可能发生的环境，它不仅可实现实物虚化，还可实现虚物实化等处理。Idea sex - refers to the virtual reality technology has a broad space to imagine, to broaden the range of human cognition, not only can represent the real environment, also can freely idea even that does not exist objectively environment may not happen, it not only can realize real blur, can realize the real and virtual objects. 4 虚拟现实技术在教育教学中的实现意义4 implementation of virtual reality technology in the education teaching significance 随着计算机、信息、网络等相关技术的发展，计算机作为一种高效能的信息传播工具，在教育教学过程中得到越来越广泛的应用，如果将虚拟现实技术作为一种新兴的教学媒体应用到教育教学中，泰安铁艺这种崭新的技术会带给我们崭新的教育思维，解决我们以前无法解决的问题。Along with the development of computer, information, network and related technology, the computer as a kind of highly efficient information communication, in the education teaching process to get more and more widely used, if the virtual reality technology as a new teaching media is applied to the education teaching, this new technology will bring us a brand new education thinking and solve problems that we couldnt before. 4.1虚拟现实技术开创了全新的学习场景彻底打破空间、时间的限制4.1 virtual reality technology pioneered the new learning scenario - completely break the space and time limit 利用虚拟现实技术，可以彻底打破空间的限制，学生可以进入物体的内部进行观察，如学生可以进入虚拟的分子、原子、航天工作站等内部，考察物体内部的工作情况。虚拟技术还可以突破时间的限制，一些需要几十年甚至上百年才能观察的变化过程，通过虚拟现实技术，可以在很短的时间内呈现给学生观察。虚拟制造技术还可以应用计算机、交互外设及软件来构建一个虚拟的生产环境，使学生能如同在制造现场一样，与荧屏上出现的制造过程进行自由交流。基于网络的虚拟现实技术为学习者提供了全新的学习场景，构造出开放性的教学环境。Use of virtual reality technology can completely break the limit of the space, students can enter the interior of the object to observe, as molecules, atoms, and students can enter the virtual space station inside, such as investigation object interior work. Virtual technology also can breakthrough the limitation of time, some take decades or even hundreds of years to observe the change of the process, through the virtual reality technology, can be in a very short period of time presented to the students. Virtual manufacturing technology is computer peripherals, interaction and software can be used to build a virtual manufacturing environment, can make students like in the manufacturing site, free communication with the manufacturing process appear on the screen. Web-based virtual reality technology provides a new learners learning scenarios, open teaching environment is constructed. 4.2虚拟现实技术提供了崭新的教学手段构建实物虚化、虚物实化的方法4.2 virtual reality technology provides a new teaching method - build physical functions, virtual reality method 通过虚拟现实、多媒体、网络等技术的综合应用，可在课堂和实验室中展现在传统的教学模式中无法实现的教学过程。虚拟现实技术可以对学生学习过程中所提出的各种假设模型进行虚拟和虚物实化，通过虚拟系统便可直观地观察到这一假设所产生的结果或效果。虚拟现实系统可以进行实物虚化，虚拟各种人物，创建虚拟课堂，在虚拟的课堂气氛中，学生可以与虚拟的教师、学生一起交流讨论，开展启发式教学。运用虚拟现实技术，还可以使学生通过在虚拟场景的身临其境和自主控制的人机交互，由视、听、触、觉获取外界的反应，通过学生自我组织，制定并执行学习计划，进行自我评价，开展适应式学习。还可通过小组或团队的形式，组织学生进行学习，成员间共享成果，开展协作式教学。Using technologies such as virtual reality, multimedia, network integrated application, can be in the classroom and the lab testing now, the traditional teaching mode cannot be achieved in the teaching process. Virtual reality technology can be in the learning process for students have put forward various hypothetical model for virtual and real and virtual objects can be visually observed through the virtual system produced by the assumption that the result or effect. Virtual reality system can perform physical functions, virtual characters, create a virtual classroom, in the virtual classroom atmosphere, students can communicate with virtual teachers and students to discuss, to carry out the heuristic teaching. Using virtual reality technology, still can make students through the virtual scene of immersive and independent control of human-computer in