发动机装配仿真教学软件的设计与实现

为帮助学生经济、有效地学习发动机装配知识和技能,基于Solidwlorks和Authorware开发出一套发动机装配的教学仿真软件,实现对发动机装配教学的计算机仿真。对软件的设计思想、结构、流程和界面设计进行阐述,并介绍开发软件所用的主要技术。     

Design and implementation of a video browsing system for the Internet

Recent advances in multimedia processing technologies, internet‐working technologies, and the World Wide Web phenomenon have resulted in a vast creation and use of digital videos. Due to this reason, an efficient technique to locate and retrieve a desired video from a remote video archive is needed. A trial‐and‐error approach popularly used in current Web search engines is not applicable for searching for a desired video segment since the technique incurs intolerable delays. In this paper, we present the design and implementation of a video browsing system that lets the user view a summary of a selected video and search within the video while being downloaded so that the user can determine the relevance of the video as early as possible. The system is inexpensive and scalable, making it suitable for large‐scale distributed systems such as the Internet. The browsing system consists of two major software components: a video server, and a video browser and player called VideoCenter implemented using Microsoft DirectShow multimedia development kit. The implementation of VideoCenter enables us to assess the ease of use of DirectShow as well as its drawbacks in developing multimedia applications. Copyright © 2001 John Wiley & Sons, Ltd.     

基于ARM的脑血氧监测仪的软件设计与实现

介绍了基于ARM的脑血氧监测仪软件的设计与实现。该软件通过控制探头对脑血氧信息进行采集并通过无线方式将信息发送给终端,终端对接收到的信息进行处理和显示,同时将病人信息存储在SQLServerCE2.0数据库中,实现病人信息的查询、添加、删除等功能。     

The design and implementation of the GINO 3D graphics software package

The design and implementation of a general purpose graphics software package (GINO) is described. GINO provides facilities for 3D graphics (co-ordinate transformation, clipping, intensity modulation) but is organized so that 2D facilities form a clean subset. It is device independent, permitting use of refresh CRT displays, storage tube displays and plotters. A characteristic feature is the use of small satellite computers attached to a large multiaccess computer (ATLAS 2) GINO takes the form of a subroutine library accessible from FORTRAN and other languages, and the case for this level of graphics software is argued. The reasons for not using a mandatory graphical data structure are also discussed. GINO is not biased towards any particular style of interaction, but two techniques are described; one based on the light pen and the other on teletype command languages Efficiency of implementation is achieved without loss of flexibility by use of a systems programming language (SAL).     

矿井通风三维仿真系统设计与实现

为了保障地下矿山工作人员的安全,服务于矿山实际生产的需要,在数据处理和系统界定的基础上研究了矿井通风原理,并建立了通风网路、通风动力和通风控制设施等通风系统模型.结合计算机仿真和计算机网络技术,提出了一套基于网络的三维可视化仿真技术体系,设计并实现了以B/S结构为平台的矿井通风网络三维可视化仿真系统.并以某地下矿山为实例进行了通风系统建模与仿真的验证,结果能够反映矿山井巷工程的三维空间位置及拓扑关系,符合矿山通风系统正常运行状况,可为通风系统的计算机辅助设计及采矿计划的制定提供参考.     

三维模型搜索通用支撑平台的设计与实现*

为满足模型搜索研究领域对数据管理、算法配置和算法验证等工具的集成需求,提出一个模型搜索支撑平台框架。利用面向对象技术,构造一个包含应用程序表现层、应用程序工具层、算法逻辑层、数据抽象层、数据访问层和数据层的多层体系结构;基于“一具体类一表”映射策略实现对象型数据与关系型数据的映射;采用策略模式实现了算法组合和替换的动态配置机制。实际应用表明,该平台可为模型搜索研究提供工具支持。     

A multiuser 3D Web browsing system

The Virtual Realty Modeling Language sets an open-standard file format for designing 3D multimedia and shared virtual worlds on the Internet. VRML was originally designed to support the interaction of multiple participants in the World Wide Web environment, that is, to network virtual worlds via hyperlinks. The development of VRML has spurred broad research on distributed multiuser VR systems. We describe SharedWeb, a 3D Web browsing system that was designed and implemented to support interaction among clients in the existing Web environment. We begin by describing the methodologies and mechanisms used to achieve seamless integration with the Web environment, then we summarize the SharedWeb system implementation. We present some experimental results that show the effects of different frame rates and threshold values on system performance, and conclude with discussions of two virtual worlds currently supported by the system     

缩微智能车软件系统设计与实现

论述一种基于简单视听觉缩微智能车的软件系统架构,可实现在缩微道路环境下自主驾驶行为决策。缩微智能车系统采用分布式层次设计方法,遵循器件独立、算法独立、可扩展、易调试、数据可储存等原则,可以有效模拟车辆在真实交通环境中的基本驾驶行为。实验证明该软件系统具有很好的实效性和稳定性。     

一种彩色FDM型3D打印机的设计与实现

设计了一种可以打印彩色三维模型的3D打印机。传统FDM型桌面3D打印机只能打印单色,因此在开源FDM型3D打印机的基础上重新设计组合了打印机的机械结构和电气控制系统来实现打印材料的混合,借助Bresenham直线算法设计了彩色打印机的控制软件,并增加了Gcode指令。实验结果表明,这种设计可以保证打印不同颜色的3D模型,并且与原来相同类型的单色3D打印机相比,提高了打印速度。     

Design patterns for model-based automation software design and implementation

The paper presents the application of object-oriented modeling techniques to control software development for complex manufacturing systems, with particular focus on case studies taken from the packaging industry and design patterns that can be abstracted from such case studies. The proposed methodology for control software modeling and implementation is based on a practical approach refined on the basis of on-the-field experience and interactions with control engineers involved in the development projects.The final objective of the paper is to review and analyze patterns for the solution of design and implementation issues that typically arise in the considered application domain.     

3D图形流水线像素处理后期的设计和实现

针对3D图形流水线像素处理后期的实时大批量数据处理和存储器读写要求,以及嵌入式系统资源和功耗的特殊性,给出一种像素处理后期的硬件设计方案。设计首先实现所有测试功能,确保各种效果,其次采用了基于屏幕分割渲染的设计思想,减少存储器需求,然后吸收了Early Z算法,尽早抛弃不可见的三角面信息,减少渲染的数据,最后实现了Flip Quad反走样算法,提高图像的质量。模块已经完成了RTL级建模,并在FPGA上通过验证。     

三维网格单一位率压缩统一框架的设计与实现

三维网格单一位率压缩技术将网格的几何信息和拓扑连接信息分开独立压缩.进行连接信息压缩时,通常对某种结构表示的网格连接信息进行某种形式的遍历,对遍历过程进行信息编码压缩;压缩几何信息时,一般需要经过量化、预测和熵编码3个处理过程.通过对该类算法进行研究总结,提出并设计了一个针对三角网格的单一位率压缩统一模式框架,并基于OpenGL和Visual C 6.0,以Edgebreaker算法为例进行了实验.     

星载图像数据处理器软件设计与实现

介绍了一款采用单片机和CAN通信控制器SJA1000实现CAN总线通讯的星载图像数据处理器的嵌入式软件的设计方法,从设备系统拓扑结构出发,介绍了单片机和SJA1000的特点,详细介绍了软件设计流程,包括CAN控制器初始化、收发数据、主程序流程图,并详细讨论了设计中几个应该注意的问题。     

智能灌溉系统上位机软件的设计与实现

根据农田环境的水、空气、土壤环境的需求,设计了基于ZigBee无线传感器网络的智能灌溉系统。具体分析了系统功能,设计了总体结构。探讨了基于.Net的智能灌溉系统上位机的功能需求、系统架构、实现方案及关键技术等。     

适于软硬件实现的安全轻量S盒的设计

随着物联网的发展,轻量级分组密码算法的设计显得尤为重要。S盒是对称密码算法的关键部件。许多加密算法的硬件实现过程易受侧信道攻击,门限实现是一种基于秘密共享和多方计算的侧信道攻击对策。通过简单地对三次布尔函数中的变量进行循环移位,构建密码性质最优的4×4安全轻量S盒,并且为所构造的S盒设计了门限实现方案来抵御侧信道攻击,该方案是可证安全的。该方法构造的S盒的四个分量函数的实现电路相同,极大地降低了硬件实现的复杂度。给定S盒的一个分量,其余的三个分量可通过该分量的循环移位获得,这样大大降低硬件实现成本,易于快速软件实现。     

软件内建自测试中的规则集设计与实现

“软件内建自测试” (Build In Self Test, BIST)是软件测试领域中的一个新概念,而其中的规则集技术则是软件内建自测试系统所提倡的一种避错技术。首先描述了规则集的定义以及原则,并给出了软件内建自测试系统中的规则集模块的实现,最后,以一个被测程序为例阐述了规则集的工作过程。     

Self-reconfigurable software architecture: Design and implementation

To respond quickly to the rapidly changing manufacturing environment, it is imperative for the system to have such capabilities as flexibility, adaptability, and reusability. The fractal manufacturing system (FrMS) is a new manufacturing paradigm designed to meet these requirements. To facilitate a dynamic reconfiguration of system elements (i.e., fractals), agents as well as software modules should be self-reconfigurable. Embodiment of a self-reconfigurable manufacturing system can be achieved by using self-reconfigurable software architecture. In this paper, therefore, self-reconfigurable software architecture is designed by conducting the following studies: (1) analysis of functional requirements of a fractal and environmental constraints, (2) design of reconfigurable software architecture especially for a reconfigurable agent, (3) selection of proper techniques to implement software modules, and realization of software architecture equipped with self-reconfigurability. To validate this approach, the designed architecture is applied to the FrMS.     

岩石楔形体三维分析系统的设计与实现

基于OpenGL技术,研究并实现了一个岩石楔形体三维分析系统.介绍了系统的应用背景、总体结构及基本功能,并应用三维可视化技术来增强系统的直观性和交互性,分析了该系统的一些关键技术,包括岩石楔形体三维建模、三维交互技术、三维模型多视图技术的实现等.最后给出了运行结果及应用实例,结果表明,该系统具有良好的应用价值.     

HAJIF软件前后处理模块设计与实现

为满足国产有限元软件HAJIF对大规模可视化的前置建模和后置数据处理功能的迫切需求,基于面向对象的程序设计思想设计并实现具有高度灵活性的前后处理模块.提出层次化、组件式的软件设计架构.在前处理功能设计方面,引入准C++标准Boost库,解决模型数据的持久化和内存管理问题;采用节点相关面法以及OpenGL深度缓存机制大大提升模型显示效率.在后处理功能设计方面,建立物理场量值与颜色的对应关系,并构建结构变形比例放大因子计算公式.研究表明：面向对象的程序设计方法可以大大提高开发效率和前后处理模块的可维护性.     

一种动态Web自动装配系统的设计与实现

大多数中小企业的Web系统属于轻量级业务处理。基于Java Web平台,提出了一种轻量化系统开发架构,该架构实现了请求形式的改变与业务处理本质的统一,支持常规业务逻辑的自动装配处理,具有可复用、标准化、代码量低的优势。