Open Access. Powered by Scholars. Published by Universities.®

Operations Research, Systems Engineering and Industrial Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Virtual reality

Discipline
Institution
Publication Year
Publication
Publication Type

Articles 31 - 59 of 59

Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

Research On Pedestrian Crossing Road Skills Assist Training System Based On Game Model, Meiliang Wang, Huagen Wan, Jianping Gu Jun 2020

Research On Pedestrian Crossing Road Skills Assist Training System Based On Game Model, Meiliang Wang, Huagen Wan, Jianping Gu

Journal of System Simulation

Abstract: With the rapid growth of number of family cars in China, there are more and more road accidents, so pedestrians will undoubtedly become the biggest victims in the accidents. Thus it is of great significance to develop a road training system that is able to improve the ability of the pedestrians to process the integrated information of the traffic flow, and reduce the risk of pedestrian in accidents when crossing the roads. Based on the key researches on dynamic virtual traffic scene, human-computer interaction and virtual objects collision detection, with the application of technology of virtual reality and 3 …


Development Trend Of Next Generation 3d Graphics Engines, Zhao Wei, Mao Ping, Fanyu Shen Jun 2020

Development Trend Of Next Generation 3d Graphics Engines, Zhao Wei, Mao Ping, Fanyu Shen

Journal of System Simulation

Abstract: The development, relationship and differences between game engine and virtual reality engine were introduced, a joint name of 3D graphics engine was proposed. The bottlenecks and shortages of scene management, geometry model creating, physics simulation, lighting, shading, etc. were analyzed by synthetically considering the advancements in computer hardware, softwares and simulation theories, etc.. The development demands and trends were researched, the Concept of adaptive multi-thread shading technology, advanced real-time dynamic deformation technology, integrated collision detection technology, independent of the collision process technology were proposed for the first time, and a brief features description of these concepts were give, it …


Application Of Virtual Reality In Plc Gas-Fired Boiler Training System, Dahu Wang, Chen Xia, Huizheng Gao Jun 2020

Application Of Virtual Reality In Plc Gas-Fired Boiler Training System, Dahu Wang, Chen Xia, Huizheng Gao

Journal of System Simulation

Abstract: In view of the problem that traditional training methods for PLC debugging can not show the running states of controlled objects in full angles, a PLC virtual simulation training platform is designed based on virtual reality technology. The system is composed of upper computer and lower computer connected by RS232 bus. The upper computer uses 3ds Max to model and render facilities, and uses Unity3D to construct the complete virtual scene. The lower computer designs PLC control board to control the virtual gas-fired boiler, which transmits data between PLC and virtual scene through the communication module. The test result …


Behavior Simulation Of Virtual Object Based On Physical Property, Yunbin Yang, Liangli He, Huaiyu Zhang, Lifan Wei Jun 2020

Behavior Simulation Of Virtual Object Based On Physical Property, Yunbin Yang, Liangli He, Huaiyu Zhang, Lifan Wei

Journal of System Simulation

Abstract: At present, because of the complexity and real-time requirement, the modeling and simulation method proposed in virtual assembly and maintenance based on physical property is difficult to apply. The development actuality of modeling and simulation method based on physical property is simply investigated. Product hierarchy information model and its implementation method are established, and fast modeling method based on physical property is presented. Behavior property description of virtual object using matrix is established and behavior property of virtual object is depicted in cases of grasp/placement, movement and drop. Behavior simulation method including force input method and force feedback method …


Virtual Ceramic Art Creation And Simulation Based On Osg, Zhao Zhi, Jianwen Song, Tiejun Li, Luo Yan, Wang Bo, Zhigeng Pan Jun 2020

Virtual Ceramic Art Creation And Simulation Based On Osg, Zhao Zhi, Jianwen Song, Tiejun Li, Luo Yan, Wang Bo, Zhigeng Pan

Journal of System Simulation

Abstract: It is so complicated that artist would keep away from multiple related software file format conversion with independent software systems, when artist creates works of ceramic art with CAD. Therefore, many people are still engaged in making ceramic art using traditional methods at present. With the continuous improvement of the quality of Chinese social life, people's demand for ceramic art is increasing and artist's works could not meet the needs of people. This paper study the key technology that enable non-professional people to experience the whole process of Casting, Glazing, Firing and Finishing with VR and to enjoy their …


Research On Techniques Of Shipboard Aviation Scene Simulation Based On Unigine, Yuanming Wang, Kuan Lu, Jia Qian, Guangqing Hu Jun 2020

Research On Techniques Of Shipboard Aviation Scene Simulation Based On Unigine, Yuanming Wang, Kuan Lu, Jia Qian, Guangqing Hu

Journal of System Simulation

Abstract: The main 3D modeling tools and scene simulation tools were introduced. Aiming at the application requirements of shipboard aviation scene simulation, the implementation framework of shipboard aviation scene simulation based on Unigine was provided. The key techniques of scene simulation, such as large scene management, visual program execution mechanism, multi-channel visual rendering and so on, were studied. The five channel scene simulation system for shipboard aviation was developed by applying these techniques, and the core functions were designed and implemented. The results show that the scheme can meet the requirements, and the simulation results with high immersion …


Key Technology Of Fully Immersive Virtual Experience Cabin, Baojiang Du, Zha Liang, Lin Ling Jun 2020

Key Technology Of Fully Immersive Virtual Experience Cabin, Baojiang Du, Zha Liang, Lin Ling

Journal of System Simulation

Abstract: The structure of simulated experience cabin for fire safety education was introduced and the design and implementation methods of a virtual fire escape system for fire safety education were proposed, and specifically the specific implementation and optimization of virtual fire scenario, the conjunction method of double virtual interactive platforms and the simplification of model and the method of communication between the virtual scenes and the PLC control hardware devices were discusses. Fire safety education oriented virtual fire escape skills training system was achieved, which was applied in the teaching and experience room for fire safety training. Application results show …


Design Of Virtual Training System For Horizontally Oriented Drill Based On Unity3d, Guojun Wen, Xia Yu, Yudan Wang, Zifei Hu, Wu Dan May 2020

Design Of Virtual Training System For Horizontally Oriented Drill Based On Unity3d, Guojun Wen, Xia Yu, Yudan Wang, Zifei Hu, Wu Dan

Journal of System Simulation

Abstract: Aiming at the equipment shortage, serious resource loss and hidden dangers in traditional horizontally oriented drilling rig training, a design scheme of the horizontally oriented drilling rig virtual training system based on the Unity3D is proposed. An experimental platform is built to verify the feasibility. The solidworks, 3dsMax model construction, Unity3D software virtual animation and scene development, Rodrigues rotation matrix 3D trajectory algorithm derivation, data acquisition (DAQ), system software and hardware communication and other technical content are used in the program. The experimental results show that the scheme is feasible, the system has the good operability and true immersion …


3d Shape Deformation Simulation Algorithm Based On Haptics, Binbin Qi, Xuefang Zhu, Lipeng Fan Dec 2019

3d Shape Deformation Simulation Algorithm Based On Haptics, Binbin Qi, Xuefang Zhu, Lipeng Fan

Journal of System Simulation

Abstract: Shape deformation is widely used in virtual reality, system simulation, computer animation and other graphics applications. Few people pay attention to introducing haptic interaction into 3D model deformation. We provide a haptic interactive framework by introducing haptic interaction into shape editing field. Based on the above haptic interactive framework, we propose a 3D model deformation simulation algorithm based on haptics. In order to realize the shape deformation, this algorithm needs to involve three parts: grid hierarchical structure, local mass-spring model and the dynamic shape deformation. Experimental results show that this algorithm has good stability and strong robustness, and the …


Rehabilitation Training System Of Vr-Based Speech Apraxia, Huanhuan Jiao, Zhigeng Pan, Shuchang Xu, Qingshu Yuan Dec 2019

Rehabilitation Training System Of Vr-Based Speech Apraxia, Huanhuan Jiao, Zhigeng Pan, Shuchang Xu, Qingshu Yuan

Journal of System Simulation

Abstract: Aiming at the problem that the enthusiasm of active training in patients with traditional speech apraxia rehabilitation is gradually weakened, a virtual reality-based rehabilitation training system for speech apraxia is designed. The system simulates the 26 monosyllabic pronunciation mouths shapes made by virtual human in Chinese and uses it for the learning module. It is proposed to identify 26 monosyllabic words by using the isolated word speech recognition algorithm, which improves the accuracy of speech recognition. The system includes a training module and a scene module for assisting the patient's pronunciation rehabilitation training. The evaluation results show that …


Osgearth Stereoscopic Vision Generation Method For Hmd-Based Virtual Reality, Liheng Tan, Ma Qiang, Bingchuan Jiang, Li Feng Dec 2019

Osgearth Stereoscopic Vision Generation Method For Hmd-Based Virtual Reality, Liheng Tan, Ma Qiang, Bingchuan Jiang, Li Feng

Journal of System Simulation

Abstract: The technology of immersive virtual reality based on helmet mounted display (HMD) has become a focus of study, however, its visual content is mainly produced through commercial game engines. OsgEarth is an open-source, state-of-the-art and widely used digital earth simulation system. Based on this, we studies the stereoscopic vision generation method for global virtual terrain environment, mainly focusing on: stereoscopic vision theory; construction of global high-precision virtual geographical environment; calculation of binocular view frustrum; system integration. The proposed method is verified under the hardware conditions of PC and HTC VIVE, which can generate stereo images of the global virtual …


Design And Realization Of Ship Virtual Fire Training System Based On Hmd, Zhang Bo, Sun Jun, Shang Lei, Hongji Xu, Yang Cheng Apr 2019

Design And Realization Of Ship Virtual Fire Training System Based On Hmd, Zhang Bo, Sun Jun, Shang Lei, Hongji Xu, Yang Cheng

Journal of System Simulation

Abstract: Aiming at the shortcomings of ship fire training in real environment and the advantages and application of virtual reality technology in education and training, the virtual fire training system of ship based on head mount display (HMD) is developed. The system is developed using the Unity 3D Virtual Reality Development Engine as a platform, using client / server mode, supporting multi-person cooperative operation, and running the terminal for HTC Vive virtual reality hardware. The system combines the fire diffuser mechanism, the water shooting hydrodynamic equation and the particle system; completes the model establishment and visualization process, and improves …


Application Of Virtual Reality In Rehabilitation Of Special Populations, Tingting Liu, Liu Zhen, Ping'an Qian, Rongrong Xuan, Wang Jin, Yanjie Chai Jan 2019

Application Of Virtual Reality In Rehabilitation Of Special Populations, Tingting Liu, Liu Zhen, Ping'an Qian, Rongrong Xuan, Wang Jin, Yanjie Chai

Journal of System Simulation

Abstract: With the continuous development of urbanization and the trend of population aging, the number of people who need physical and mental rehabilitation continues to increase. Using information technology to assist the rehabilitation process has the important practical significance. The existing studies about the application of virtual reality (VR) technology in the rehabilitation, psychological problems and children with autism for stroke are reviewed. A framework for the intelligent rehabilitation system is proposed. Virtual agent, the technology of somatosensory and voice recognition are advised to be used. Based on the proposed framework, a prototype rehabilitation game for autism and an upper …


Real-Time Collision Detection Of Coastline In Navigation Simulator, Qianfeng Jing, Helong Shen, Yin Yong, Xiuwen Liu Jan 2019

Real-Time Collision Detection Of Coastline In Navigation Simulator, Qianfeng Jing, Helong Shen, Yin Yong, Xiuwen Liu

Journal of System Simulation

Abstract: In order to develop real-time collision detection module of coastline in navigation simulator, a mesh preprocessing method for coastline data is applied. The principle of meshing is established and the coastline data is meshed based on the clipping algorithm. The mesh data is stored into an appropriate data structure. The collision detection algorithm and test program are developed based on Microsoft Foundation Classes (MFC). The ship contour points and the mesh expansion method are applied to avoid error in special cases which could also improve the accuracy of collision detection. The results show that the method reduces much time …


Virtual Vascular Stent Implantation Model Based On Fbs, Chenxi Huang, Yongtao Hao, Haowei Xing, Chen Fei Jan 2019

Virtual Vascular Stent Implantation Model Based On Fbs, Chenxi Huang, Yongtao Hao, Haowei Xing, Chen Fei

Journal of System Simulation

Abstract: Vascular stent intervention can expand the narrow coronary artery. Doctors analyze the patient's two-dimensional vascular images based on experience and select the stent. In this paper, vascular stent implantation is modeled and analyzed by Function-Behavior-Structure. The stent model is established by virtual reality modeling language and the stent implantation process is simulated. By combining FBS product design method with the virtual reality interaction technology, the virtual stent selection and implantation are adjusted until getting the best result. The prototype system can establish a personalized implantation model. The stent is selected accurately based on the specificity of patient's …


Interactive Modelling On Smooth Weighted Distance Surface In Hmd Vr Environment, Xiaoqiang Zhu, Hongyi Pan, Xu Hao, Song Lei, Mengyao Zhu, Xiangyang Wang Jan 2019

Interactive Modelling On Smooth Weighted Distance Surface In Hmd Vr Environment, Xiaoqiang Zhu, Hongyi Pan, Xu Hao, Song Lei, Mengyao Zhu, Xiangyang Wang

Journal of System Simulation

Abstract: An interactive modelling scheme in immersive VR environment is proposed, in which the point, line and polygon skeletons are inputted by handles of HMD (Head-Mounted Device). Weighted distance field is calculated in parallel with CUDA on GPU according to the varying radii, and then the iso-surface is extracted using paralleled marching cubes. In order to avoid the non-smoothness at interactions between different distance surface components, weighted filtering kernels are utilized to smooth the skeleton-based distance field with various radii in our modelling system, so that smooth blending model is produced from multi-component distance fields. In our system, …


Research On 3d Immersive Underground Laboratory Visualization System, Jiaxin Hou, Yadong Wu, Yangjie Xu, Xuejun Li, Wang Song, Dongzhou Du, Xiaorong Zhang Jan 2019

Research On 3d Immersive Underground Laboratory Visualization System, Jiaxin Hou, Yadong Wu, Yangjie Xu, Xuejun Li, Wang Song, Dongzhou Du, Xiaorong Zhang

Journal of System Simulation

Abstract: Deep geological disposal of high-level radioactive waste is the only internationally recognized and feasible method. The construction of underground laboratories is a complex engineering. To improve the intuitiveness and accuracy of comprehensive data analysis, an immersive underground laboratory 3D data visualization system is constructed. The system includes surface scenes, scene models with laboratory lanes and bedrooms, and designs scene roaming and visual interactive interaction of 3D data. The practical application shows that this system can not only facilitate the rapid construction and evaluation of underground laboratory design schemes, but also provide scientific basis for rapid decision-making of engineering construction …


Development Of Interactive Simulation Of Dive And Underwater Operation Process Of Jiaolong, Xiaoxi Zhang, Yin Yong, Mincang Liang Jan 2019

Development Of Interactive Simulation Of Dive And Underwater Operation Process Of Jiaolong, Xiaoxi Zhang, Yin Yong, Mincang Liang

Journal of System Simulation

Abstract: In order to solve the problems of difficult implementation and high safety risk in the practical training of deep submarine work at present, the simulation system of dive and underwater operation process of jiaolong is designed based on the virtual reality technology, which is not limited by time and place. The 3D modeling technology is used to construct the 3D model of the key structures such as the jiaolong and the mother ship. A mathematical model of A frame motion is established to simulate the motion process. Human-computer interaction and roaming are achieved by using 3D interactive technology, …


Forestry Felling & Cultivation Machine Virtual Training System Based On Unity3d, Bowen Cheng, Yili Zheng, Qingqing Huang, Jinhao Liu Jan 2019

Forestry Felling & Cultivation Machine Virtual Training System Based On Unity3d, Bowen Cheng, Yili Zheng, Qingqing Huang, Jinhao Liu

Journal of System Simulation

Abstract: A forestry felling & cultivation machine virtual training system based on Unity3D was developed. The models of forestry felling & cultivation machine were built up using 3dsMAX with the assistance of SolidWorks based on a forestry felling & cultivation machine. The models of forestry felling & cultivation machine and trees were imported into Unity3D to create a virtual operating environment. Each part of forestry felling & cultivation machine needs to be processed for the establishment of paternity in accordance with the simulation, the corresponding mathematical model was established to simulate the motion of the manipulator based on the analysis …


Research On Virtual Reality Simulation System For Crew Cabin Of Special Vehicle, Yufei Jia, Xinjun Zhao, Junyan Zhao, Lingjie Kong, Kelei Huang Jan 2019

Research On Virtual Reality Simulation System For Crew Cabin Of Special Vehicle, Yufei Jia, Xinjun Zhao, Junyan Zhao, Lingjie Kong, Kelei Huang

Journal of System Simulation

Abstract: As a kind of new design method, virtual reality has been widely used in military, industrial, construction, medical, aerospace and other fields. A method for designing and demonstrating the crew cabin of special vehicle by visualized virtual reality simulation technology is introduced in this paper, which takes the design and demonstration of crew cabin of special vehicle in the future as example. The overall framework has been formatted through the design of system function and the detailed division of module. On the basis of the design for each functional software of the system, the functional modules are effectively supported …


Research And Implementation Of 3d Emergency Drilling System Of Oil Spill At Sea, Changjun Zou, Yin Yong, Xiuwen Liu, Haijiang Li Jan 2019

Research And Implementation Of 3d Emergency Drilling System Of Oil Spill At Sea, Changjun Zou, Yin Yong, Xiuwen Liu, Haijiang Li

Journal of System Simulation

Abstract: In view of the high cost, constraint to time and space, harmfulness to the environmental as well as insufficient training in extreme weather condition in current oil spill emergency drilling system, a 3D emergency drilling system of oil spill based on virtual reality is presented and implemented. The classical oil spill model is adopted to establish an oil boom driven model based on mass-spring system. Interactive operation between oil boom and oil film based on polygon clipping is realized. The system runs stably and smoothly in the system test, which fully proves the correctness and reliability of the system …


Digital Design Of Intralogistics Systems: Flexible And Agile Solution To Short-Cyclic Fluctuations, Anike Murrenhoff, Christoph Pott, Moritz Wernecke, Philipp-Akira Burger Jan 2018

Digital Design Of Intralogistics Systems: Flexible And Agile Solution To Short-Cyclic Fluctuations, Anike Murrenhoff, Christoph Pott, Moritz Wernecke, Philipp-Akira Burger

15th IMHRC Proceedings (Savannah, Georgia. USA – 2018)

In times of fast-paced, fluctuating and individual markets, intralogistics systems, such as warehouses, have to adapt to the resulting volatile performance demands dynamically. Hybrid systems, in which humans and machines work together efficiently and communicate in socio-technical networks, can be the answer to manage these high-frequency markets. Hybrid systems of the future need to adapt frequently and permanent change becomes the “new normal”. A one-time planning of warehousing systems upon first installation becomes obsolete. This results in the question of how to design and implement processes for future logistics systems in an agile way in order to exploit the flexibility …


An Ergonomics Investigation Of The Application Of Virtual Reality On Training For A Precision Task, Delaney M. Bales Jun 2017

An Ergonomics Investigation Of The Application Of Virtual Reality On Training For A Precision Task, Delaney M. Bales

Master's Theses

Virtual reality is rapidly expanding its capabilities and accessibility to consumers. The application of virtual reality in training for precision tasks has been limited to specialized equipment such as a haptic glove or a haptic stylus, but not studied for handheld controllers in consumer-grade systems such as the HTC Vive. A straight-line precision steadiness task was adopted in virtual reality to emulate basic linear movements in industrial operations and disability rehabilitation. This study collected the total time and the error time for the straight-line task in both virtual reality and a physical control experiment for 48 participants. The task was …


A Comparison Of Gestures For Virtual Object Rotation, Brandon Michael Garner Dec 2016

A Comparison Of Gestures For Virtual Object Rotation, Brandon Michael Garner

Theses and Dissertations

The fields of virtual reality and gesture-based input devices are growing and becoming more popular. In order for the two technologies to be implemented together, an understanding of gestures in relation to virtual objects and users' expectations of those gestures needs to be understood. Specifically, this thesis focuses on arm gestures for the rotation of virtual objects. Participants in the study were first asked to freely perform an arm gesture they felt should execute a task. Next, participants were asked to perform specific rotation tasks with pre- configured arm gestures on four objects. There were two types of objects: those …


A Comparison Of Instructional Strategies For Teaching Entry-Level Welding At The High School Level, Jared Paul Massic Mar 2016

A Comparison Of Instructional Strategies For Teaching Entry-Level Welding At The High School Level, Jared Paul Massic

Theses and Dissertations

The traditional method of teaching welding has remained unchanged for decades. In this model, an instructor gives demonstrations to a class of students and then helps them individually as they practice the techniques of welding. This traditional instructional method has been effective but is time consuming. Due to a significant increase in the demand for skilled welders within the United States, efforts have been made to develop more efficient methods of providing welding instruction. Various electronic welding guidance systems and virtual welding systems have recently been developed. In this study, the researcher addressed two questions 1) Does the use of …


A Framework For Safety Training Using Virtual Reality Software, Rana Riad Jan 2015

A Framework For Safety Training Using Virtual Reality Software, Rana Riad

Electronic Theses and Dissertations

Safety training is a vital component to the well-being of individuals in all industries. With technology advancing at the current pace, conventional training methods are no longer the most effective way to communicate information. There is a strong need for safety training that incorporates new methods and forms of communication to obtain higher levels of comprehension. Virtual reality systems offer a highly customizable and interactive form of delivering information to users. This research addresses major gaps in the field of safety training using virtual reality systems and provides a design framework for creating a virtual safety-training system. A model for …


Enhancing Undergraduate Engineering Education Of Lean Methods Using Simulation Learning Modules Within A Virtual Environment, Elizabeth A. Cudney, Steven Corns, Jennifer A. Farris, Stephen Gent, Scott Erwin Grasman, Ivan G. Guardiola Jun 2011

Enhancing Undergraduate Engineering Education Of Lean Methods Using Simulation Learning Modules Within A Virtual Environment, Elizabeth A. Cudney, Steven Corns, Jennifer A. Farris, Stephen Gent, Scott Erwin Grasman, Ivan G. Guardiola

Engineering Management and Systems Engineering Faculty Research & Creative Works

This paper highlights the use of an integrated user-centered virtual learning environment throughextensible simulation learning modules that is currently being developed to enhance undergraduate curricula to meet the industrial needs for engineers with education in lean. The purpose of the research is to address these expectations by developing learning modules that incorporate lean simulation models into various Engineering Management, Industrial Engineering, and Mechanical Engineering courses at Missouri S&T, Texas Tech, and South Dakota State, respectively. In recent years, increasing global competition, rapidly changing technology, and a deficit of U.S. engineering graduates have intensified the need to produce graduating engineers who …


Use Of Incremental Adaptation And Habituation Regimens For Mitigating Optokinetic Side-Effects, David A. Graeber Jan 2001

Use Of Incremental Adaptation And Habituation Regimens For Mitigating Optokinetic Side-Effects, David A. Graeber

Retrospective Theses and Dissertations

The use of incremental and repeated exposures regimens have been put forth as effective means to mitigate visually induced motion sickness based on the Dual Process Theory (DPT) (Groves & Thompson, 1970) of neural plasticity. In essence, DPT suggests that by incrementing stimulus intensity the depression opponent process should be allowed to exert greater control over the net outcome than the sensitization opponent process, thereby minimizing side-effects. This conceptual model was tested by empirically validating the effectiveness of adaptation, incremental adaptation, habituation, and incremental habituation regimens to mitigate side-effects arising from exposure to an optokinetic drum. Forty college students from …


Synthetic Battlebridge: Information Visualization And User Interface Design Applications In A Large Virtual Reality Environment, Kirk G. Wilson Dec 1993

Synthetic Battlebridge: Information Visualization And User Interface Design Applications In A Large Virtual Reality Environment, Kirk G. Wilson

Theses and Dissertations

With shrinking budgets and fewer personnel, future military training will rely heavily on simulated environments. The goal for this training is to reduce cost while maintaining readiness and unparalleled capability for all levels of military command. This thesis effort, the Synthetic Battle Bridge SBB , provides a real-time simulated environment for military commanders to observe on-going computer simulations of varying participation levels and helps them wring the most from a simulation. The SBB, designed for higher ranking personnel with little time to spend learning how to run the system, must exhibit three capabilities ease-of-use, long-term retention, and adaptability. Based on …