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1.
虚拟仪器软件LabVIEW与数据采集   总被引:47,自引:0,他引:47  
本文在介绍最新技术-虚拟仪器及其开发环境LabVIEW特点的基础上,分析了LabVIEW中的数据采集技术,并给出了数据采集应用实例。应用表明,LabVIEW用于常规的数据采集、测试、测量等任务,可以减少系统的开发时间,同时也提高了编程效率。  相似文献   

2.
基于DLL的虚拟仪器设计   总被引:2,自引:0,他引:2  
该文介绍了虚拟仪器的开发环境LabVIEW的特点,分析并实现了利用动态链接技术实现LabVIEW和C语言的接口技术。文中阐述了LabVIEW和C语言接口的方法,并给出了应用实例。通过在LabVIEW中引入了C语言的强大功能,从而提高了LabVIEW的数据处理能力,并极大地增强了LabVIEW与其他Windows应用程序之间的数据共享能力。实践证明,该方法高效、易行,是增强LabVIEW整体功能的一条很好的途径。  相似文献   

3.
在简要介绍虚拟仪器开发平台LabVIEW的基础上,对多线程技术作了说明。结合具体实例,着重分析了远程虚拟仪器系统中多线程技术的实现方法——LabVIEW多任务并行程序。  相似文献   

4.
基于LabVIEW的数据采集的实现   总被引:3,自引:0,他引:3  
黄云江 《福建电脑》2008,24(4):114-115
本文在介绍虚拟仪器及其开发环境LabVIEW特点的基础上,分析了LabVIEW中的数据采集技术,并给出了数据采集应用实例。应用表明,LabVIEW用于常规的数据采集、测试、测量等任务,可以减少系统的开发时间,同时也提高了编程效率。  相似文献   

5.
阐述了虚拟仪器软件开发平台LabVIEW技术的特点,并介绍了MySQL数据库与LabVIEW之间的通信方法,应用LabVIEW图形化编程软件和MySQL数据库软件,借助ODBC驱动软件,对温度、压力采集系统进行了设计,实现了温度、压力的采集,数据存储与查询,远程监控等功能。  相似文献   

6.
一种对虚拟仪器软件LabVIEW进行功能扩展的方法   总被引:4,自引:0,他引:4  
在介绍最新技术--虚拟仪器及其开发环境LabVIEW的基础上,分析了LabVIEW调用外部程序代码的途径,并着重实现了将LabVIEW与C语言接口的高级技术-CIN。实践证明,该方法高效、易行,是扩展LabVIEW功能的一条很好的途径。  相似文献   

7.
《自动化信息》2005,(10):76-76
2005年7月,NI发布了最新的NI LabVIEW DSP模块,它包含了用于设计、实现和分析基于DSP算法和系统工具。最新的LabVIEW DSP模块将LabVIEW图形化开发环境扩展至嵌入式信号处理应用程序,并且向工程师和学生提供了一个易于使用的、现成的方法来学习主要的信号处理技术。  相似文献   

8.
基于ADO技术的LabVIEW访问数据库的方法   总被引:5,自引:0,他引:5  
LabVIEW是当前开发虚拟仪器的主要工具之一,但没有提供与数据库直接连接的接口,利用ADO技术较好地解决了Lab-VIEW访问通用数据库的问题。详细介绍了LabVIEW环境下对ADO对象的调用方法,并给出了建表和查询两个实例。实例运行表明,应用ADO可以实现LabVIEW对数据库的访问。  相似文献   

9.
阐述了开放式虚拟仪器平台LabVIEW的特点,介绍了PCI总线技术。利用图形化编程语言LabVIEW的虚拟仪器和动态特性,在计算机上构成用户界面动态显示和交互,使用LabVIEW动态链接库,调用板卡函数开发出了一个由计算机控制的FIFO半满式32路数字量采集系统,并且进行了软件可行性的测试。数据采集卡配合虚拟仪器中的LabVIEW编程,就能完成数据采集过程。实验证明,采用这种方法省去了复杂的语言编程,缩短了软件的开发时间,简化了开发过程,同时也增加了应用的灵活性。  相似文献   

10.
基于数据库的LabVIEW与Matlab混合编程及其实现   总被引:2,自引:0,他引:2  
介绍了在LabVIEW中实现与数据库通信的几种方法,以及LabVIEW和Matlab混合编程的几种实现途径.并以配方优化系统为背景,利用DLL技术和ActiveX技术在LabVIEW MySQL Matlab构架下实现线性规划算法,为在LabVIEW环境下解决基于数据库的复杂算法提供了一种实现途径.  相似文献   

11.
Despite all the financial resources that are directed to support and acquire learning technologies, the results have been generally disappointing. Faculty are eager to use technology but lack the technical skills, ability, and experience. Library staff includes a talent tool rich in Information and Communication Technologies (ICT)/WEB 2.0 technical expertise and experience. In terms of content sourcing and procurement, library technical services and selection staff have broad knowledge of the marketplace for online information and content as well as experience in licensing access. They have a firm grasp of the transaction process, workflows, pricing, and licensing negotiations. Content development and sourcing inevitably involves access management, online storage, copyright, and licensing—things at which libraries are good. ICT deployment is changing teaching and learning on campuses, and the roles of those involved in teaching and learning are also changing. Whether formally through mandated library services, or informally through back channels, library staff are supporting faculty new technology use as well as faculty teaching materials content sourcing and procurement.  相似文献   

12.
This article presents the current status of existing and emerging ISO, ANSI, and FIPS standards for database management, specifically Database Languages NDL and SQL and Remote Database Access (RDA). It describes the general content of each standard and discusses its applicability, availability, completeness, maturity, stability, existing usage, and known limitations. Where appropriate, it also addresses the availability of conformance test suites and future plans for enhancements and follow-on standardization efforts.  相似文献   

13.
With the convergence of digital media into ever-widening social and technological networks for creation and distribution, the contexts for writing and the study of writing and writers have certainly changed. Researchers must navigate a dense matrix of ethical and legal issues in all phases of research when studying the ever-changing processes and products of digital communications. In this article, I draw from numerous sources to articulate a few of the challenges facing digital writing researchers in this age of convergence, focusing on issues of representation (researcher, participant, third-party), issues of informed consent, and issues of copyright and fair use.  相似文献   

14.
基于PKI/PMI的数字化校园安全认证系统的应用研究   总被引:1,自引:0,他引:1  
结合PKI和PMI各自的优点,借助RBAC模型中的角色概念,设计了一个基于PKI/PMI的联合认证系统方案,并应用于数字化校园中。该方案由PKI、PMI及访问控制三大子系统组成,利用公钥证书和属性证书分别实现用户的身份鉴别和权限授予。介绍了访问控制子系统的详细设计。采用实证方法研究了基于角色的访问控制,实现了身份统一认证与授权管理。  相似文献   

15.
Environmental ergonomics: a review of principles, methods and models   总被引:5,自引:0,他引:5  
A review of the principles, methods and models used in environmental ergonomics is provided in terms of the effects of heat and cold, vibration, noise and light on the health, comfort and performance of people. Environmental ergonomics is an integral part of the discipline of ergonomics and should be viewed and practised from that perspective. Humans do not respond to the environment in a way monotonically related to direct measures of the physical environment. There are human characteristics which determine human sensitivities and responses. Practical methods for assessing responses to individual environmental components are presented as well as responses to ‘total’ environments and current and proposed International Standards concerned with the ergonomics of the physical environment.  相似文献   

16.
为研究列车碰撞性能,用Adams创建由车体、车钩缓冲装置、端部吸能结构、防爬器、转向架和轮轨力等组成的单节车厢三维动力学模型,并创建6节车厢列车的三维动力学模型,模拟列车以15 m/s的速度与2节静止车厢碰撞的过程.通过分析各节车厢的速度、加速度和每个车钩缓冲装置的相对偏移量在碰撞过程中的变化情况,重现列车碰撞过程,进而分析影响列车垂向爬车和横向屈曲稳定性的因素.仿真结果表明,碰撞过程中每个车钩缓冲装置的相对偏移量和列车各节车厢的加速度最大值均沿列车运行向不断变小;列车前三节车厢的垂向爬车和横向屈曲最严重,转向架发生出轨现象.  相似文献   

17.
Complexity, complication, contradiction, consumption, confusion, delusion, depression. Opportunity, inspiration, ingenuity, compassion, wisdom. Our world is perplexing, our times are fast moving, and our choices are many. To find an appropriate path is a daunting yet vital challenge that confronts us as individuals, as communities, and as a civilization. How sustainable is our world? How reasonable are our behaviors? The present article is a collection of thoughts on a series of intertwined issues related to the contemporary world, its environmental dimensions, and their present-day problems. The goal is to survey the landscape through a lens of Environmental Design, to provide some perspectives, to raise some questions, and to explore systems, beliefs, and values informing and influencing actions. It is important to consider how people's belief systems influence, inform, and shape actions. This holds true in realms political, spiritual, and cultural. It also proves relevant in the ways in which we imagine, design, develop, and construct our buildings, cities, spaces, and places.

Appropriate solutions to some of our most daunting problems will arise through the concerted efforts, open dialogue, and collective wisdom of the wide array of stakeholders, professionals, politicians, decision makers, and citizens (both engaged and disenfranchised) who have the will and wherewithal to make a difference and to make the world safer, healthier, and better. It seems vital for us to critically examine, and question, our belief systems and their connections to the ways we define, refine, and realize progress. Architecture and Environmental Design, in both a philosophical and a practical sense, reflect as well as form greater aspirations, directions, and events of our times.  相似文献   

18.
李元    王石荣    于宁波   《智能系统学报》2018,13(3):445-451
移动机器人在各种辅助任务中需具备自主定位、建图、路径规划与运动控制的能力。本文利用RGB-D信息和ORB-SLAM算法进行自主定位,结合点云数据和GMapping算法建立环境栅格地图,基于二次规划方法进行平滑可解析的路径规划,并设计非线性控制器,实现了由一个运动底盘、一个RGB-D传感器和一个运算平台组成的自主移动机器人系统。经实验验证,这一系统实现了复杂室内环境下的实时定位与建图、自主移动和障碍物规避。由此,为移动机器人的推广应用提供了一个硬件结构简单、性能良好、易扩展、经济性好、开发维护方便的解决方案。  相似文献   

19.
社会Agent的BDO模型   总被引:15,自引:0,他引:15  
目前MAS中思维状态的研究趋势是在个体模型中加入社会思维属性,研究社会承诺、依赖、联合意图的推理关系。在BDI模型中,以意图为中心的观点不描述社会Agent。该文分析了以竭力为中心的Agent思维状态研究存在的问题,提出MAS的分层模型,并提出以信念、愿望和义务作为基本思维属性(简称BDO)来描述Agent的思维状态和社会属性,给出了BDO逻辑和语义模型,考虑了奖励、惩罚、承诺和承诺解除问题,并对队、组织、组织意图等现象给出了描述。该文力图更自然地描述社会性Agent的思维状态和群体概念,是对Rao和Georgeff提出的BDI模型的改进。最后通过一个例子说明了BDO的表达能力。进一步的工作包括建立更为完善的语义模型、结合各个思维属性的动态修正语义给出BDO Agent的动态模型以及给出基于BDO逻辑框架的Agent/MAS实现结构。  相似文献   

20.
自动化立体仓库控制系统设计   总被引:1,自引:0,他引:1  
为满足大载重、高速、高精度立体仓库控制系统的自动化运行要求,设计了一种PLC控制器和伺服控制相结合的控制系统方案。系统采用了三菱以太网、H网、CC-Link和串口通信等不同层次、不同通信协议的通信网络来满足现场复杂环境的通信需求,并采用三菱伺服的半闭环、全闭环等多种控制方式来满足生产对系统的运行速度、精度和平稳性的需求。实际运行效果表明,该控制方案较好地适应了现场生产环境,实现了系统安全、稳定的运行,满足了各项生产需要,大大节约了人力和物力。  相似文献   

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