汽车驾驶模拟器控制系统的设计与实现

为使汽车驾驶模拟器实现实车运动状态及结构特征仿真,设计了基于单片机的数据采集系统和仪表控制系统。首先,数据采集系统采用ATmega2560单片机对模数信号进行采集与处理。其次,仪表控制系统采用Arduino UNO R3开发板、步进电机扩展板和28BYJ-48步进电机实现车速表和转速表的实时显示。然后,以数据帧的形式完成串口通信,基于VS2010使主控计算机同时完成读写功能。最后,在汽车驾驶模拟器上进行实验并对方向盘信号的处理过程进行优化。实验结果表明：系统能够完成行业标准(JT/T 378-2014)对汽车培训驾驶模拟器的功能要求,且可以实时传送操作状态,动作延迟低,数据传输稳定,且成本较低,具有一定的实用性。     

汽车驾驶模拟器仪表驱动系统的设计与实现

介绍了汽车驾驶模拟器仪表驱动系统的设计方案和实现方法,水温表和油量表采用仪表驱动引脚与地之间串接电阻的方法进行驱动,时速表和发动机转速表采用单片机输出频率信号驱动,在时速表和发动机转速表驱动的算法实现中采用了最小二乘法进行线性关系拟合。采用该方案设计的驱动系统具有较好的可靠性和实用性,有一定的参考价值。     

汽车驾驶模拟器中3D场景的设计和实现

1 引言汽车驾驶模拟器是一种能正确模拟汽车驾驶操作,并能在主要性能上获得与实车相同感觉的汽车驾驶训练仿真教学设备。一个好的模拟器应该有一个立体感强、图形逼真的三维视景。YF三维汽车驾驶模拟器的视景系统采用计算机实时生成技术(称为CIG视景系统),它根据当前汽车的状态实时生成逼真的三维场景,使学员感觉就象驾驶真的汽车一样,从而达到训     

虚拟驾驶环境中混合交通控制的设计与实现

1 引言汽车驾驶模拟器(简称模拟器)是将计算机仿真技术应用于教学的一个教学仿真系统。它使用实车驾驶室的环境,并实时地生成虚拟环境来模拟驾驶训练中的声音和视景效果,从而给学员以在真车实景中训练的感受。虚拟驾驶环境就是在汽车驾驶模拟器中构造的虚拟环境。     

轨道交通视景仿真模拟器分布式系统设计

以轨道交通驾驶训练为背景,介绍了模拟训练的设计方案。利用模块化设计实现计算机与操作单元的分布式仿真：PLC模块实现操作单元的指令和数据传输,通过RS485/232实现控制台计算机对操作单元检测与控制;采用四通道视景系统作为输出界面,Creator构建轨道站点和沿线环境模型,Vega实现模型驱动。应用表明该系统在实时性、逼真度和开放性等方面比视频模拟器均有较大提高,并已成功应用于某城市轨道交通视景仿真模拟器中。     

基于LabVIEW的汽车车速模拟系统设计

综合分析驾驶模拟器的现状及发展前景,以LabVIEW8. 5为软件平台,结合研华工控机、数据采集卡和旋转编码器等硬件构建汽车车速模拟系统;侧试时,系统实时检测模拟器的油门与制动踏板转角值,软件根据建立的车速模拟模型实现车速的动态输出和显示;实验表明该模拟系统开发周期短、高可靠性,能够模拟真实驾车感受的车速,可以用于实验条件下研究汽车操纵与交通情况等问题.     

三维场景编辑器的设计与实现

汽车驾驶训练模拟器是一种能正确模拟汽车驾驶操作，并能在主要性能上获得与实车同样感觉的汽车驾驶训练仿真教学设备。三维场景编辑器是三维模拟驾驶软件中的一个子系统。本文描述了三维场景编辑系统Ｍａｐ Ｅｄｉｔｏｒ的设计与实现。Ｍａｐ Ｅｄｉｔｏｒ与主系统的接口一定格式的地景文件，是提供给用户进行地景计算机辅助设计的工具。它的实现给出了一种快速实现图形编辑的方法。实践表明，这是一种有效的方法。     

汽车驾驶模拟器控制系统的研制

本文介绍了汽车驾驶模拟器控制系统的研制。该系统实现了点火、方向盘总成、离合器、脚刹、油门、手刹、换档等装置状态的检测和驱动仪表总成等功能。为了及时准确的检测信号和驱动仪表,该系统采用了多片单片机。经过检验,该系统运行良好,能准确实现信号检测和仪表驱动。     

DP—851单片计算机的制作与应用：教学实验板和逻辑笔的制作

一、教学实验板的制作教学实验板是DP-851单片机系统进行教学,演示,实验和开发的辅助设备。它采取模块化电路设计结构,包括计算机三总线模块电路(含地址译码电路)、蜂鸣器驱动电路、数据线驱动电路、两位数码管显示电路,发光二极管显示电路和40脚PIO芯片实验电路。这些模块电路自成单元,互不连接,但都焊有插针,用绕线器(专利产品)接上引线即可将各种模块电路相互连接。借此可进行MCS-51单片机指令实验,数字电路、显示器件、蜂呜器等实验,同时还可进行单片机应用开发模拟实验,是初学者必不可少的实验     

QM—CGI型计算机成像汽车驾驶训练模拟器

介绍计算机成像汽车驾驶模拟器的原理组成、硬件结构、软件功能和监控系统，以及为完成训练要求所采取的技术措施，并讨论应用前景。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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