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《Ergonomics》2012,55(1-3):41-51
Electronic innovations that are slowly but surely changing the very nature of driving need to be tested before being introduced to the market. To meet this need a system for integrated virtual prototyping and testing has been developed. Functional virtual prototypes of various traffic systems, such as driver assistance, driver information, and multimedia systems can now be easily tested in a driving simulator by a rapid prototyping approach. The system has been applied in recent R&D projects. 相似文献
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复杂产品虚拟样机技术研究 总被引:2,自引:0,他引:2
虚拟样机技术尤其是面向多领域支持复杂系统的协同虚拟样机仿真支撑平台的研究已成为研发的热点。通过对Agent技术和WEB服务技术以及虚拟样机仿真系统的长期研究,提出了一种面向多领域的复杂产品虚拟样机仿真支撑平台的实现方案,给出了该仿真支撑平台的基于Agent和WEB服务的系统结构和虚拟样机设计中涉及的机械,电子,控制,软件等领域的智能Agent的统一描述,讨论了虚拟样机仿真支撑系统中Agent间的通信方式并阐明了系统的工作流程和信息集成模式,为虚拟样机的进一步发展和应用奠定了基础。 相似文献
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A recent investigation revealed that there is a substantiated need for the development of a micro-simulation system designed for traffic safety assessment. This paper describes the development of a road traffic simulation system, which uses a ‘nanoscopic model’ of driver behaviour and an integrated analysis-evaluation system designed for traffic safety assessment. The primary focus is on estimating the effects of an advanced driver assistance system thereby reducing traffic accidents. The effectiveness and validity of the present system are demonstrated through comparison with measured traffic data. This paper also proposes algorithms embedded in a ‘driver-agent’, for recognising driver’s intentions regarding choosing steering-control modes, lateral control tasks, and the driving mood. This is because the driver assistance systems need to recognise the driver’s intention when choosing steering-control. The results of a simulation study, using the data drawn from actual driving, show that the systems would achieve a high recognition capability. As an example of how driving mood recognition applies to driver assistance systems, an advanced steering system and the adaptability to the driver’s mood, have also been presented. 相似文献
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应个人网络存储应用的需要,研究和开发网络虚拟存储系统。实现这种系统的关键是开发网络虚拟磁盘驱动。通过介绍在Windows NT内核模式下设计虚拟磁盘驱动的详细原理,分析和研究网络虚拟磁盘驱动的设计与实现。开发过程中,调用TDI(Transport Driver Interface)函数,实现了网络虚拟磁盘驱动的网络功能。使用此方法开发虚拟存储系统,由于是基于Windows内核的开发,所以网络传输效率较高;另外,基于此技术的虚拟存储系统,没有改变用户的使用习惯,所以大大方便了用户的使用。 相似文献
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Rai L. Soon Ju Kang 《IEEE transactions on systems, man, and cybernetics. Part A, Systems and humans : a publication of the IEEE Systems, Man, and Cybernetics Society》2009,39(4):754-769
Rapid prototyping methods are in need of autonomous decision making and analysis during the product development stages so that the ldquotime-to-marketrdquo can be reduced faster than traditional product development methodologies. Therefore, new methods of prototyping are inevitably essential. This paper proposes an approach to utilize the benefits of virtual prototyping (VP) and physical prototyping (PP) methodologies by integrating them into knowledge-based systems (KBSs) by providing seamless connection. This approach is termed autonomous integrated prototyping. The main contribution of this paper is the development of an intelligent system architecture to facilitate and guide the product development autonomously and simultaneously in both VP and PP environments. The seamless connection between VP and PP, along with KBSs, enables the exploration of new behaviors of developing systems and analyzing different behaviors. The architecture is applicable to embedded real-time systems (ERTSs), sensor applications, robotics, and ubiquitous applications where system interaction with the external environment is necessary. 相似文献
6.
Conor Linehan Gillian Murphy Kieran Hicks Kathrin Gerling Kellie Morrissey 《International journal of human-computer interaction》2013,29(18):1681-1692
ABSTRACTThis article presents a qualitative driving simulator study designed to understand the experience of giving up control to automated processes in semiautonomous driving systems. The study employed an experience prototyping methodology, with 12 drivers (4 female) completing 2 sessions in a high-fidelity driving simulator. Condition A simulated a normally functioning car, while Condition B simulated a semiautonomous system that monitors driver behavior and takes evasive action when danger is detected. The simulator experience was used to ground wider discussion of automation and the experience of driving, which was explored through a semistructured interview. Results identify design challenges for autonomous driving systems; the loss of user agency and confidence, and handling the change between manual and automated control. Opportunities were identified; in augmenting rather than removing human abilities, and in providing new learning opportunities for drivers. 相似文献
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A typical mechatronic product includes mechanical parts, software techniques, electrical and electronic components. This interdisciplinary character significantly increases the complexity of mechatronic products. Therefore, inefficient communication between the engineers, who come from different domains, becomes one of the main challenges in the development of mechatronic systems. Although, innovations in the field of virtual prototyping can help the engineers to handle a complex system and then accelerate the development processes, the technique itself does not offer a solution to the problem of multidisciplinary communications. In this paper, we present a practical solution of supporting knowledge sharing and communication within a multidisciplinary developing group, whose members need to work cooperatively for doing virtual prototyping of mechatronic systems in VR environment. 相似文献
8.
Jong-Chih Chien Jiann-Der Lee Chi-Ming Chen Ming-Wen Fan Yu-Home Chen Li-Chang Liu 《Applied Soft Computing》2013,13(11):4413-4427
A semi-integrated system for driver assistance and pedestrian safety is presented. This system is composed of a single camera which focuses on the driver for picking up visual cues and a stereo rig that focus on the road ahead for the detection of road obstructions and pedestrians. While the car is in motion, the driver's viewing direction is obtained and analyzed along with information of road condition and any moving vehicle ahead in order to determine if the current driving condition is safe. In addition, when the vehicle is moving slowly, the system can also detect the existence of a pedestrian ahead and warns the driver if the pedestrian moves in front of the car. This system contains algorithm-based safety analysis as well as fuzzy rules-based analysis for interaction between variables. Our experimental results show that the condition for driver safety can be accurately classified in 94.5% of the tested driving conditions, and the pedestrians can be identified in 93.18% of the tested cases. These were compared to the results of similar systems and shown to be superior. 相似文献
9.
针对全国道路交通事故高发现状及传统驾驶安全教育方式单一、培训效果差的缺点,基于虚拟现实技术(VR),在引发交通事故人为因素理论基础上,开发驾驶仿真及安全教育系统。系统基于Unity3D引擎,构建了基于道路实景数据的虚拟场景,并联合SUMO实现了道路交通流仿真,通过VR技术仿真驾驶环境及驾驶行为;基于碰撞检测原理,建立了关卡违规触发机制,编码自定义屏幕空间渲染方式模拟驾驶员视觉效果,并构建了基于图像的交通事故现场三维全景,从认知、感知层面培训驾驶员安全驾驶。实用性测试结果表明,系统实现了不同道路场景、气象条件与交通状况下的驾驶模拟及安全培训,增强了使用者的学习兴趣,提高了使用者驾驶安全素养,具有较强的实用性。 相似文献
10.
针对智能拖拉机在复杂多变、操控任务繁多的农业作业条件下难以实现全自主智能驾驶的不足,设计一种基于虚拟现实技术的拖拉机遥操作驾驶系统。首先,开发了虚拟现实主控端硬件系统,包括拖拉机驾驶模拟器及方向盘、挡位、油门、刹车、离合等机构的信号采集和检测电路;并基于VC++平台,结合OpenGL图形程序接口及3ds Max,构建以南京农业大学浦口校区为工作场景的拖拉机遥操作虚拟现实软件系统。实验表明,拖拉机遥操作驾驶虚拟现实系统简单稳定,易于操纵,具有良好的交互性和应用性。 相似文献
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Rapid prototyping or 'virtual prototyping' of human-machine interfaces offers the possibility of putting the human operator 'in the loop' without the effort and cost associated with conventional man-in-the-loop simulation. Advocates suggest that rapid prototyping is compatible with conventional systems development techniques. It is not clear, however, exactly how rapid prototyping could be used in relation to conventional human factors engineering analyses. Therefore, an investigation of the use of the VAPS virtual prototyping system was carried out in five organizations. The results show that a variety of task analysis approaches can be used to initiate rapid prototyping. Overall, it appears that rapid prototyping facilitates an iterative approach to the development of the human-machine interface, and that is most applicable to the early stages of systems development, rather than to detailed design. 相似文献
13.
Gathering a group of remotely located engineers to design a vehicle can be difficult, especially if they live in different countries. To overcome this obstacle, we-a team at the National Center for Supercomputing Applications (NCSA) in the US in partnership with Germany's National Research Center for Information Technology (GMD) developed a collaborative virtual prototyping system for Caterpillar. The Virtual Prototyping System (VPS) will let engineers in Belgium and the US work together on vehicle designs using distributed virtual reality. The system supports collaborative design review and interactive redesign. Integrated real-time video transmissions let engineers see other participants in a shared virtual environment at each remote site's viewpoint position and orientation. Any number of remotely located sites may join in the shared VE, communicating via multicast. The system has been tested with three sites at NCSA 相似文献
14.
Haptic feedback usually involves two types of stimulation forces: forces that address the touch sense and forces that address the kinesthetic perception. Touch forces have a low intensity and a complex structure since they reflect contact phenomena where friction plays an important role. Therefore, they are quite difficult to simulate. Virtual prototyping with haptic feedback should ideally involve both types of forces, but the integration of the touch feeling makes the simulator very complex. In this paper, we present a novel concept for virtual prototyping in which the touch interaction is separated from the kinesthetic force feedback. This is possible using a prototype that has a real part undertaking the touch interaction and a virtual part that simulate feedback for the kinesthetic forces. In this way, a full haptic interaction with the virtual prototype is established by means of a device that provides a realistic simulation of the product. In order to illustrate the concept, several experiments have been carried out for the case of specific subsystems of a car, which are particularly involved in the driver–car interaction: steering system, clutch pedal and the gearshift. A user test is described in the last part as well as the conclusions of the research. 相似文献
15.
《Human-Computer Interaction》2013,28(2):199-233
Computing power is an integrated part of our physical environment, and since our physical environment is three-dimensional, the virtual studio technology, with its unique potential for visualizing digital 3D objects and environments along with physical objects, offers an obvious path to pursue in order to envision future usage scenarios in the domain of pervasive computing.We label the work method virtual video prototyping, which grew out of a number of information systems design techniques along with approaches to visualization in the field of architecture and set design.We present a collection of virtual video prototyping cases and use them as the platform for a discussion, which pinpoint advantages and disadvantages of working with virtual video prototyping as a tool for communication, experimentation and reflection in the design process. Based on more than ten cases we have made the observations that virtual video prototypes 1) are a powerful medium of communication in development teams and for communication with industry partners and potential investors, 2) support both testing and generating ideas 3) are particular suited for addressing spatial issues and new ways of interacting. In addition practical use of virtual video prototypes has indicated the need to take into account some critical issues including a) production resources, b) hand-on experience, and c) the seductive power of virtual video prototypes. 相似文献
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Binding Virtual Environments to Toolkit Capabilities 总被引:1,自引:0,他引:1
There are many toolkits and development environments that aid the process of constructing virtual environment applications. Many of these development environments encourage customising a virtual environment's design while rapid prototyping within the confines of a toolkit's capabilities. Thus the choice of the technology and its associated support has been made independent of the end-use requirements of the final system. This can bias a virtual environment's design by implementation based constraints. We propose that an alternative approach is the consideration of virtual environment requirements in the context of an inspectable design model, to identify the requirements that a toolkit will need to support. In the context of an example, we present a selection of design requirements that we consider important for virtual environment design in general. We explore how these requirements might be mapped to different capabilities using Virtual Reality Modelling Language (VRML) as a concrete example of a platform technology. 相似文献
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We propose a hardware-software codesign process based on a design methodology called virtual prototyping. With this process, we integrate VHDL models of hardware components with application, control and diagnostic software to rapidly prototype complex, multiboard, embedded microcontroller-based DSP systems. In the virtual prototyping of a demonstration avionics system, in collaboration with Lockheed Sanders, Hughes, and Motorola RASSP teams, we reduced hardware-software integration and system test times from the typical industry figure of 10-24 months to less than a month 相似文献