多传感器数据融合技术研究及软件仿真“平台”的设计和开发
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摘要
随着计算机的普及,仪器工业正在经历一场巨变。计算机强大的处理和显
    示能力,使它可以在数据采集、分析和表达中的任意一个方面提升仪器的性能。
    全世界不计其数的科学家和工程师,都在应用个人计算机使他们的研究、设计
    和生产更具自动化。易用而功能强大的软件和开发环境可以快速的开发高性能
    的应用系统。在仪器领域出现了一个很受欢迎的名词—虚拟仪器,虚拟仪器描
    述了可编程仪器和通用计算机的结合。
     本文结合32路高速数据流盘和波形再现系统的实现过程,对虚拟仪器的系
    统集成技术进行了研究,重点是系统软件的实现。首先介绍了虚拟仪器的基本
    概念、结构以及特点,和传统仪器进行性能上的比较,并对VXI和PXI总线进
    行了比较详细的研究。其次,在确定系统硬件和软件方案的基础上,介绍了整
    个硬件系统的配置情况和模块的硬件性能。最后,对采集模块HP E1433A和数
    据存储模块HP E1562E的编程技术进行了充分的分析,仔细研究了如何在虚拟
    仪器的专用开发平台LabWINDOWS/CVI上开发系统软件的各个功能模块。重
    点是通过局部总线从HP E1433A向HP E1562E进行数据流盘,设置HP E1562E
    的Session,利用双缓冲软件技术进行波形再现的程序设计。本系统已经通过了
    出所验收,证明系统方案合理有效,在实时性、可靠性、稳定性上都有较好的
    表现,实现了数据流盘和波形再现系统的各项功能,系统的易用性、可靠性、
    抗干扰性和恶劣环境下的工作能力等方面给人留有深刻的印象,体现了虚拟仪
    器在测试测控领域技术的先进性。
The instrumentation industry is undergoing a variety of exciting changes as a
     result of the widespread acceptance and proliferation of PCs, The pc revolution has
     equipped users with powerful processing and display capabilities of their own. The
     computer can enhance instrument functionality in any of the three element areas-data
     acquisition, analysis, and presentation. Millions of scientists and engineers around
     the world use PCs to automate their research, design, and manufacturing tasks. Easy
     to use but powerful software and application development environment allow you to
     develop more capable applications faster. With the advent of the PC, a new term has
     become popular in the instrumentation community. The term "Virtual instrument"
     describes the combination of programmable instruments with general-purpose PCs.
    
     System intergration based on virtual instrument are dicussd in this paper with
     implement of the system-multichannel data throughput of high speed and real-time
     wave regenerating. Firstly, the base concept of virtual instrument is introduced, and
     virtual instrument have been compared with traditional instrument. VXIbus and
     PXIbus are discussed in details. Secondly, hardware configuration are presented, lay
     stress on data acquisition module HP E1433A and data storage module HP E1562E.
     Thirdly, in the base of architecture of software system, implement of every function
     module are discussed. This paper demonstrates how to throughput data from E1433
     to an E1562 using the local bus. It also demonstrates how to set up an E1562 Session
     using splitting and How to output signal data using double buffering software
     technique. All functions of this system satisfied requirements and passed the test.
引文
[1] National Instruments Applicatibn Note 048: Signal Conditioning Fundamentals for PC-Based Data AcquisitiOn System,July 1993
    [2] David Haworth,Designing and Evaluating VXI Systems,Tektronix,February 1994
    [3] Ron Wolf,Short Tutorial on VXI/MXI,Application Note 030,National Instruments Corporation,April 1996
    [4] James Kimery, Choosing the Right Test Platform, National Instruments, EE-EVALUATION ENGINEERING,September 1996
    [5] National Instruments, Instrumentation Reference and Catalogue 1997,P5-57-P5-82: VXI-DAQ Instrument Module and Signal Conditioning Overview
    [6] National Instruments,Measurement and Automation Catalogue, 1999
    [7] Phillippe M.Roy,Architecture considerations in High-performance VXI Data Acquisition Systems,VXI JOURNAL,Vol.7 No.2,Summer1996
    [8] National Instruments,VXIBUS SEMINAR.April 1997 Edition
    [9] National Instruments,VXI Solutions,1997
    [10] Hewlett Packard, 1998 Test System and VXI Products Catalog, 1998
    [11] National Instruments,The PXI System Architecture,1997. 9
    [12] National Instruments,A New,Open Specification for Modular Instrumentation, 1997. 9
    [13] National Instruments,Labwindows/CVI User Guide,1997
    [14] 郭恩全,赵兴奋;虚拟仪器发展趋势及其对军用测试技术的影响.计算机自动测量与 控制. 1999. 3
    [15] 董宗光,抓住机遇快步进入VXI时代,电子仪器世界,1997. 5. 28.
    [16] 杨国忠等,基于VISA的事件处理方法与实现,测控技术,2000. 9
    [17] 张小牛等,虚拟仪器技术回顾与展望,测控技术,2000. 9
    [18] 陈光禹,VXI总线测试平台技术,电子科技大学出版社,1996. 10
    [19] 虚拟仪器产品与技术,陕西海泰电子有限责任公司。
    [20] 全国第五届VXI技术专题报告会论文集, 2000. 5

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