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Product information modeling is critical to the integration of mechanical CAD/CAM systems and to the implementation of a concurrent engineering system. This paper presents a recent development of a feature-based and object-oriented concurrent engineering system with its focus on a product information modeling technique implemented in the system. The technique was developed to capture product definition data including form features and their spatial relationships and to store them as an object-oriented information model during the design process. The paper also describes the implementation of the information modeling technique and its application to manufacturing process planning in an object-oriented environment. 相似文献
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基于COM和ASP技术的工作流管理系统的设计与实现 总被引:30,自引:2,他引:30
工作流管理系统是支持企业实现业务过程管理和自动化的强有力的软件工具,在它的设计与开发过程中,需要解决一系列问题以保证系统易实施和易维护,并具有优良的性能。该文提出了一种基于COM和ASP技术的工作流管理系统CIMFlowII的设计和实现方法,重点介绍了基于COM组件的设计框架和并发工作流执行服务的实现技术。 相似文献
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将实时视频采集和虚拟现实技术相结合,探索出一种利用相对经济的采集设备,生成高信息量、强沉浸感的数字媒体的方案。文中介绍了软件系统的设计和实现,并详细说明了系统实现使用的关键技术和相应算法,解决了将流媒体技术与虚拟现实技术相结合的多个难点。全景视频系统系统基于C/S结构在Windows平台上实现,主要利用微软的DirectShow和D3D的开发包,为以后视频会议、数字媒体系统等提供了新的应用前景。 相似文献
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基于RS-485总线的能源量计量系统设计研究 总被引:1,自引:0,他引:1
根据大多数水泥企业提出的对主要加工设备的运行工况和耗电量监测以及在线计量的需要,设计了一套能源量计量系统.该系统基于以太网络建立C/S系统,采用RS-485总线技术,并利用组态王6.5工控软件和EDA9033A智能模块进行设计,能够在线监测设备工况并对耗电量数据采集、存贮和处理,还具有基于B/S的Web访问功能.文中对软硬件设计方法、系统功能实现进行分析,给出了实验结果.经原系统实验,表明该系统能够满足设计要求. 相似文献
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在C/S和B/S模式软件系统中,服务器端程序对客户端请求的响应速度,是衡量软件性能的重要指标。在Windows系统环境下,对利用IOCP技术开发高性能的服务器端程序的设计方法进行了研究。 相似文献
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刘世贵 《电脑编程技巧与维护》2014,(18):12-13
针对于软件工程专业设计基于C/S模式的网络教学系统包括课件、题库与操作实践3部分组成。系统设计将教学内容模块化,划分为课件模块、实时互动教学模块、题库模块、资源下载模块和学习交流模块,内容包含有文字资料、视频资料和图片资料,采用C/S模式,以网页的形式展现在系统前台。该系统不仅能够实现学生点播学习、教师远程实时授课、师生在线互动等功能,并且能够为学生提供在线阶段性知识掌握情况测评,为师生打造了良好的网络学习环境。 相似文献
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采用ARM9微处理器S3C2440及WINDOWS CE嵌入式操作系统,开发出基于触摸屏的智能家居菜单,实现对日常生活中各种常用的电子家居设备的统一管理。整个应用软件在EVC开发环境中完成,采用WINCE的MFC类库开发主体部分,个别模块采用API开发,主要介绍软件的整体设计过程,并以个别子模块为例进行说明。 相似文献
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MVC设计模式是构建可复用、易维护、灵活、高效的面向对象软件的有效方法,是软件设计的典型结构。通过构建贵州省重点项目管理信息系统的实例,介绍了在.NET平台下,结合Web Services技术特点,采用MVC设计模式构建应用系统的设计思想和实现方法。 相似文献
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嵌入式系统设计过程中软件与硬件集成验证的滞后,已成为制约整个系统开发进程的重要因素.虚拟微处理器是指在嵌入式系统硬件原型形成之前构造的可仿真原型,通过对微处理器的仿真支持软件嵌入式软件开发.介绍了基于虚拟微处理器技术的嵌入式软件开发环境的设计和实现,利用该环境,设计者可在设计早期进行系统集成验证,减少设计错误并缩短设计周期.该环境已经在嵌入式系统开发过程中得到成功应用. 相似文献
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介绍了基于光纤的γ遥测数据远程通信系统的设计与实现,包括系统拓扑结构、通信软件设计.该系统充分利用光纤介质的优势,采用简便的点到点结构,通信分为串口通信和网络通信,串口通信为基于API的多线程编程方式,网络通信为应用Socket的C/S模式,实现了γ遥测数据的远程可靠传输,并扩展为多业务综合数据通信系统.系统应用于科研试验中,增强了遥测系统数据通信的可靠性,效果良好. 相似文献
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本论文主要目的是通过对嵌入式Linux软件开发环境、配置方法和硬件驱动程序设计方法的研究,分析操作系统的内核和驱动程序的结构,参考三星公司的SD/MMC驱动和斯道开发板的开发说明书,总结出一套嵌入式Linux的MMC卡开发环境的构建方法,定制设计适合ARM9芯片的S3C2410处理器的Linux PDA的MMC和SD存储卡驱动程序。 相似文献
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中性束注入加热(NBI)是核聚变实验装置最重要的辅助加热方法之一,针对现有的管理软件无法实现对NBI系统的全局管理和实时监控的问题,为适应NBI系统本身的复杂性以及其高电压、高辐射的复杂的工作条件,提出了一套NBI系统管理的新方法.本文介绍了基于网络的NBI控制系统管理软件的设计与实现过程. NBI控制系统管理软件主要基于客户机/服务器结构、多线程技术、socket通信技术、心跳波机制开发,它提供给用户一套标准的接口和统一的管理终端用以实时监控和远程管理运行在不同平台下、不同类型的硬件设备和软件系统.该系统的实现可以增强NBI各子系统运行的稳定性,为中性束注入装置的可稳态运行提供保障. 相似文献
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《Advances in Engineering Software》2010,41(4):590-603
Large-scale finite element analysis of complex product needs a wider support from external CAE resources. This paper proposes a method of the distributed concurrent and collaborative design in the distributed intelligent resources environment to use Web-based extended manufacturing resources for product development. The CAE-integrated distributed collaborative design system architecture and enabling techniques are presented. Distributed CAE service resources on the Internet are achieved through JiniTM and service object-oriented architecture technologies. These CAE software tool resources are encapsulated as service providers in the system. A case study of railway bogie development is presented, and the Pro/E, HyperMesh, Ansys and HumanExpert service providers dynamically invoked and integrated as a temporary service federated environment with no need to know the exact location of a provider beforehand, flexibility can be well achieved, and collaborative design in the system can be implemented in the distributed dynamic environment. Compared with the traditional design system, some preliminary results indicate this architecture can shorten the cycle of service exchange, and strongly support concurrent and collaborative design of the complex product. 相似文献
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The objective of this paper is to investigate specific methodologies for conceptual design and to establish a computational framework for an intelligent CAD system in a concurrent engineering environment. The main idea in developing such a system is to help designers in conceiving better design ideas within given sets of design, manufacturing, and assembly constraints. It is, therefore, essential to integrate intelligently diverse knowledge sources from different fields of manufacturing (e.g., design, process planning, assembly, inspection). When an object creation process is complete, the system analyzes the structure in consultation with its intelligent computational modules (“local experts”) to make sure that no functional, geometric design or manufacturing constraints are invalidated and to suggest an alternative better design, whenever possible. The paper also discusses the implementation of a prototype system for automated fixture design in the proposed concurrent engineering environment. 相似文献
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《Information and Software Technology》2003,45(5):253-267
VRCASE is a virtual environment based Computer Aided Software Engineering (CASE) tool. It provides a 3D multiuser collaborative software modeling environment with automatic object-class abstraction, class diagram generation, and C++ skeleton generation facilities for assisting Object-Oriented software development. It allows multiple concurrent users to model software system collaboratively. To achieve efficient collaborative software development in VRCASE, we have proposed and implemented a Fine-grained locking and notification mechanism together with visual indicators to maintain system consistency among multiple concurrent users. The system evaluation shows that our approach can effectively support multiuser collaborative software design in VRCASE. 相似文献
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μC/OS-II以其运行稳定、实时性强、代码短小精悍等优点受到嵌入式系统开发人员的青睐。该文介绍了一个采用μC/OS-II实现的心电监护仪的软件系统的设计与开发。将μC/OS-II移植到S3C2410处理器上,对μC/OS-II进行了配置,在μC/OS-II上创建并运行8个任务,采用消息队列来实现它们之间的通信,协同工作,实现了监护仪的功能。文章还对不采用操作系统、采用Linux以及采用μC/OS-II实现心电监护仪各自的优缺点作了比较和探讨。 关键词: 相似文献
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A good programming language alone is not sufficient for economic software production. The programming environment has a significant influence on the productivity of software engineers. Providing a programmer with information about an object-oriented software system requires extracting information from the source code, e.g. class, method and variable names. We use separate structure files for holding this information and take advantage of proven tools such as make and the C preprocessor for keeping the structure files up to date and for processing software systems that heavily use macros. In this paper we describe the concepts used for comfortable processing of C++ software systems, and discuss interesting design and implementation aspects, including structure files, the applied make mechanism and the exploitation of the C preprocessor. 相似文献