In this paper,a synthesized technique is explored through design of a virtual experiment system for main aero-engine based on VR,which attempts to integrate some VR techniques,such as 3D stereo simulation and modeling...In this paper,a synthesized technique is explored through design of a virtual experiment system for main aero-engine based on VR,which attempts to integrate some VR techniques,such as 3D stereo simulation and modeling,3D scene management and human-computer virtual assembly based on data glove and collision detection.The geometry modeling and instantiation technique,virtual hand modeling and data glove interaction technique are discussed chiefly.Finally,taking aim at assembling and dismantling experiment system of a certain aero-engine,interface technology is expounded also.展开更多
针对桥梁施工过程中存在的大量安全隐患,以提高施工安全性为目的,设计开发了桥梁施工安全仿真系统,实现施工过程可视化、数字化管理。首先,根据桥梁施工布局平面图,采用BIM(Building Information Modeling)技术完成施工场地各功能区模...针对桥梁施工过程中存在的大量安全隐患,以提高施工安全性为目的,设计开发了桥梁施工安全仿真系统,实现施工过程可视化、数字化管理。首先,根据桥梁施工布局平面图,采用BIM(Building Information Modeling)技术完成施工场地各功能区模型的构建和整合,建立整体工区BIM模型;其次,基于Unity3D平台,利用地形编辑器、生态系统插件、粒子系统等工具,建立桥梁施工三维地形场景;最后,采用FBX数据交换格式,将工区BIM模型与三维地形场景在Unity3D平台中实现模型集成,构建完整的桥梁施工仿真场景。以场景模型为基础,使用JavaScript编程语言、Vue.js框架和MySQL数据库技术开发桥梁施工安全仿真系统,实现工程信息集成、设备集成、人员管理、三维场景漫游、施工过程模拟、VR沉浸式施工安全仿真等功能。以某轻轨项目高架桥工程为依托,将系统应用于实际工程中,利用HTC Vive头戴式VR(Virtual Reality)设备的触碰交互和射线交互技术,在虚拟桥梁施工场景中实现沉浸式VR体验。实践证明,系统可以直观地呈现桥梁施工过程中的物体打击、触电事故、高空坠落、机械伤害4种主要安全隐患事故,通过VR技术使施工人员能够预先演练可能发生的安全隐患,为人员培训、保障安全施工提供新方法。展开更多
文摘In this paper,a synthesized technique is explored through design of a virtual experiment system for main aero-engine based on VR,which attempts to integrate some VR techniques,such as 3D stereo simulation and modeling,3D scene management and human-computer virtual assembly based on data glove and collision detection.The geometry modeling and instantiation technique,virtual hand modeling and data glove interaction technique are discussed chiefly.Finally,taking aim at assembling and dismantling experiment system of a certain aero-engine,interface technology is expounded also.
文摘针对桥梁施工过程中存在的大量安全隐患,以提高施工安全性为目的,设计开发了桥梁施工安全仿真系统,实现施工过程可视化、数字化管理。首先,根据桥梁施工布局平面图,采用BIM(Building Information Modeling)技术完成施工场地各功能区模型的构建和整合,建立整体工区BIM模型;其次,基于Unity3D平台,利用地形编辑器、生态系统插件、粒子系统等工具,建立桥梁施工三维地形场景;最后,采用FBX数据交换格式,将工区BIM模型与三维地形场景在Unity3D平台中实现模型集成,构建完整的桥梁施工仿真场景。以场景模型为基础,使用JavaScript编程语言、Vue.js框架和MySQL数据库技术开发桥梁施工安全仿真系统,实现工程信息集成、设备集成、人员管理、三维场景漫游、施工过程模拟、VR沉浸式施工安全仿真等功能。以某轻轨项目高架桥工程为依托,将系统应用于实际工程中,利用HTC Vive头戴式VR(Virtual Reality)设备的触碰交互和射线交互技术,在虚拟桥梁施工场景中实现沉浸式VR体验。实践证明,系统可以直观地呈现桥梁施工过程中的物体打击、触电事故、高空坠落、机械伤害4种主要安全隐患事故,通过VR技术使施工人员能够预先演练可能发生的安全隐患,为人员培训、保障安全施工提供新方法。
