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LabVIEWLabVIEW is a highly productive graphical programming language for building data acquisition an instrumentation systems.With LabVIEW, you quickly create user interfaces that give you interactive control of your software system. To specify your system functionality,you simply assemble block diagrams - a natural design notation for scientists and engineers. Tis tight integration with measurement hardware facilitates rapid development of data acquisition ,analysis,and presentation bVIEW contains powerful built -in measurement analysis and a graphical compiler for optimum performance. LabVIEW is available for Windows 2000/NT/Me/9x, Mac OS, Linux, Sun Solaris, and HP-UX, and comes in three different development system options.Faster DevelopmentLabVIEW accelerates development over traditional programming by 4 to 10 times! With the modularity and hierarchical structure of LabVIEW, you can prototype ,design, and modify systems in a short amount of time. You can also reuse LabVIEW code easily and quickly in other applications.Better InvestmentUsing a Lab VIEW system, each user has access to a complete instrumentation laboratory at less than the cost of a single commercial instrument. In addition, user configurable LabVIEW systems are flexible enough to adapt to technology changes, resulting in a better bong-term investment.Optimal PerformanceAll LabVIEW applications execute at compiled speed for optimal performance. With the LabVIEW Professional Development System or Application Builder, you can build stand-alone executables or DLLs for secure distribution of your code. You can even create shared libraries or DLLs to call LabVIEW code from other programming languages.Open Development EnvironmentWith the open development environment of LabVIEW, you can connect to other applications through ActiveX, the Web, DLLs, shared libraries, SQL(for databases), DataSocket, TCP/IP,and numerous other e LabVIEW to quickly create networked measurement and automation systems that integrate the latest technologies in Web publishing and remote data sharing. LabVIEW also has driver libraries available for plug-in data acquisition, signal conditioning , GPIB,VXI,PXI, computer-based instruments,serial protocols, image acquisition, and motion control. In addition to the LabVIEW development systems, National Instruments offers a variety of add-on modules and tool sets that extend the functionality of LabVIEW .This enables you to quickly build customizable, robust measurement and automation systems.LabVIEW Datalogging and Supervisory Control ModuleFor high channel count and distributed applications, the LabVIEW Datelogging and Supervisory Control Module provides a complete solution. This module delivers I/O management, event logging and alarm management, distributed logging, historical and real-time trending, built-in security, configurable networking features, OPC device connectivity, and over 3,300 built-in graphics.LabVIEW Real-TimeFor applications that require real-time performance, National Instruments offers LabVIEWReal-Time. LabVIEW Real-Time downloads standard LabVIEW code to a dedicated hardware target running a real-time operating system independent from Windows.LabVIEW Vision Development ModuleThe LabVIEW Vision Development Module is for scientists, automation engineers,and technicians who are developing LabVIEW machine vision and scientific imaging applications. The LabVIEW Vision Development Module includes IMAQ Vision, a library of vision functions, and IMAQ Vision Builder, an interactive environment for vision applications. Unlike any other vision products, IMAQ Vision Builder and IMAQ Vision work together to simplify vision software development so that you can apply vision to your measurement and automation applications.Countless ApplicationsLabVIEW applications are implemented in many industries worldwide including automotive, telecommunications, aerospace, semiconductor, electronic design and production, process control, biomedical, and many others, Applications cover all phases of product development from research to design to production and to service. By leveraging LabVIEW throughout your organization you can save time and money by sharing information and software.Test and MeasurementLabVIEW has become an industry-standard development tool for test and measurement applications. With Test Stand, LabVIEW-based test programs, and the industry's largest instrument driver library, you have a single, consistent development and execution environment for your entire system.Process Control and Factory AutomationLabVIEW is used in numerous process control and factory automation applications.Many scientists and engineers look to LabVIEW for the high speed, high channel count measurement and control that graphical programming offers.For large, complex industrial automation and control applications, the LabVIEW Data logging and Supervisory Control Module provides the same graphical programming as LabVIEW, but is designed specifically for monitoring large numbers of I/O points, communicating with industrial controllers and networks, and providing PC-based control.Machine Monitoring and ControlLabVIEW is ideal for machine monitoring and predictive maintenance applications that need deterministic control, vibration analysis, vision and image processing, and motion control. With the LabVIEW platform of products including LabVIEW Real-Time for real-time deterministic control and the LabVIEW Data logging and Supervisory Control Module, scientists and engineers can create powerful machine monitoring and control applications quickly and accurately.Research and AnalysisThe integrated LabVIEW measurement analysis library provides everything you need in an analysis package. Scientists and researchers have used LabVIEW to analyse and compute real results for biomedical, aerospace, and energy research applications, and in numerous other industries. The available signal generation and processing, digital filtering, windowing, curve-fitting, For specialized analysis, such as joint time-frequency analysis, wavelet,and model-based spectral analysis, LabVIEW offers the specially designed Signal Processing Toolset.The Sound and Vibration Toolset offers octave analysis, averaged and nonaveraged frequency analysis, transient analysis, weighted filtering, and sound-level measurement, and more.Draw Your Own SolutionWith LabVIEW, you build graphical programs called virtual instruments (VIs) instead of writing text-based programs. You quickly create front panel user interfaces that give you the interactive control of your system. To add functionality to the user interface, you intuitively assemble block diagrams- a natural design notation for engineers and scientists.Create the Front PanelOn the front panel of your VI, you place the controls and data displays for your system by selecting ob jects from the Controls palette, such as numeric displays, meters, gauges, thermometers, LEDs, charts,and graphs.When you complete and run your VI,you use the front panel to control your system whether you move a slide, zoom in on a graph, or enter a value with the keyboard.Construct the Graphical Block DiagramTo program the VI, you construct the block diagram without worrying about the syntactical details of text-based programming languages. You do this by selecting objects (icons) from the Functions palette and connecting them together with wires to transfer data among block diagram objects. These objects include simple arithmetic functions, advanced acquisition and analysis routines, network and file I/O operations, and more.Dataflow ProgrammingLabVIEW uses a patented dataflow programming model that frees you from the linear architecture of text-based programming languages. Because the execution order in LabVIEW is determined by the flow of data between nodes,and not by sequential lines of text,you can create block diagrams that execute multiple operations in parallel. Consequently, LabVIEW is a multitasking system capable of running multiple execution threads and multiple VIs in parallel.Modularity and HierarchyLabVIEW VIs are modular in design, so any VI can run by itself or as part of another VI. You can even create icons for your own VIs, so you can design a hierarchy of VIs that serve as application building blocks. You can modify, interchange, and combine them with other VIs to meet your changing application needs.Graphical CompilerIn many applications, execution speed is critical. LabVIEW is the only graphical programming system with a compiler that generates optimized code with execution speeds comparable to compiled C programs. You can even use the LabVIEW profiler to analyse and optimize time-critical operations. Consequently, you increase your productivity with graphical programming without sacrificing execution speed.Measurements and MathematicsLabVIEW includes a variety of other measurement analysis tools. Examples include curve fitting, signal generation, peak detection, and probability and statistics. Measurement analysis functions can determine signal characteristics such as DC/RMS levels, total harmonic distortion (THD),impulse response, frequency response, and cross-power spectrum. LabVIEW users can also deploy numerical tools for solving differential equations, optimization, root finding, and other mathematical problems.In addition, you can extend these built-in capabilities by entering MATLAB or HIQ scripts directly in your LabVIEW programs. For charting and graphing, you can rely on the built-in LabVIEW 2D and 3D visualization tools. 2D tools include features such as autoscaling X and Y ranges, reconfigurable attributes (point/line styles, colors, and more)andcursors, Microsoft Windows users can employ OpenGL-based 3D graphs and then dynamically rotate, zoom, and pan these graphs with the mouse.Development SystemThe LabVIEW Professional Development System facilitates the development of high-end, sophisticated instrumentation systems for developers working in teams, users developing large suites of VIs, or programmers needing to adhere to stringent quality standards.Built on the Full Development System, the Professional Development System also includes the LabVIEW Application Builder for building stand-alone executables and shared libraries (DLLs）and creating distribution kits. In addition, the development system furnishes source code control tools and offers utilities for quantitatively measuring the complexity of your applications. With graphical differencing, you can quickly identify both cosmetic and functional differences between two LabVIEW applications.We include programming standards and style guides that provide direction for consistent LabVIEW programming methodology. The system also contains quality standards documents that discuss the steps LabVIEW users must follow to meet internal regulations or FDA approval. The Professional Development System operates on Windows 2000/NT/Me/9x,Mac OS, HP-UX, and Linux.LabVIEW Full Development SystemThe LabVIEW Full Development System equips you with all of the tools you need to develop instrumentation systems. It includes GPIB, VISA, VXI, RS-232, DAQ, and instrument driver libraries for data acquisition and instrument control. The measurement analysis add DC/RMS measurements, single tone analysis, harmonic distortion analysis, SINAD analysis, limit testing, signal generation capabilities, signal processing, digital filtering, windowing, curve fitting, statistics, and a myriad of linear algebra and mathematical functions. The development system also provides functions for direct access to DLLs, ActiveX, and other external code. Other features of the system include Web publishing tools, advanced report generation tools, the ability to call MATLAB and HiQ scripts, 3D surface, line, and contour graphs, and custom graphics and animation. The Full Development System operates on Windows 2000/NT/Me/9x, Mac OS, HP-UX, and Linux.LabVIEW Base PackageUse the LabVIEW Base Package, the minimum LabVIEW configuration, for developing data acquisition and analysis, instrument control, and basic data presentation. The Base Package operates on Windows 2000/NT/Me/9x.Debug License for LabVIEWIf you deploy LabVIEW applications, including LabVIEW tests for use with Test Stand, the debug license allows you to install the LabVIEW development system on the target machines so you can step into your test code for complete test debugging. This license is not intended for program development.虚拟仪器（LabVIEW）虚拟仪器是一种高效用于构建数据采集与监测系统图形化编程语言。
虚拟仪器（LabVIEW）虚拟仪器是一种高效用于构建数据采集与监测系统图形化编程语言。
使用虚拟仪器，您快速创建用户界面，让您交互控制您的软件系统。
要指定您系统的功能，您只需装配块关系图—一种自然的设计表示科学家和工程师。
测量硬件紧密集成方便了数据采集、分析与演示文稿解决方案的快速发展。
虚拟仪器包含强大的内置度量分析和一个图形的编辑器实现最佳性能。
虚拟仪器是使用于Windows 2000/NT/Me/9x、Mac OS、Linux、Sun Solaris 和HP-UX，有三种不同的开发系统选项。
更快地发展虚拟仪器通过加快发展了对传统的编程提升了4至10倍！使用模块化和层次结构的虚拟仪器，可以原型，设计，并且在一个短时间内修改系统。
您也可以重用虚拟仪器代码轻松快速地在其他应用程序中应用。
更好的投资使用虚拟仪器系统，每个用户有权访问单一的商业文书的成本低于一个完整的检测实验室。
此外，用户还可配置的虚拟仪器系统足够的灵活性，从而更好地长期投资的技术变化与适应。
优化性能虚拟仪器的所有应用程序执行以获得最佳性能的编译速度。
用虚拟仪器专业开发系统或应用程序生成器，可为您的代码的安全通讯生成独立可执行文件或dll。
您甚至可以创建共享的库或从其他编程语言中调用虚拟仪器代码的dll。
开放的开发环境用虚拟仪器在开放开发环境，您可以连接到通过ActiveX、Web、dll、共享的库、SQL （数据库）、DataSocket、TCP/IP和许多其他协议的其他应用程序。
虚拟仪器用于快速创建网络的测量和Web发布和远程数据共享最新的科技集成的自动化系统。
虚拟仪器也可以用于插件数据采集、信号调理、GPIB、VXI、PXI、基于计算机的仪器、串行协议、图像采集和运动控制的驱动程序。
除了在虚拟仪器的开发系统国家仪器还提供多种附加模块和扩展功能的虚拟仪器的工具集。
这使您可以快速构建可定制、鲁棒的测量和自动化系统。
虚拟仪器数据记录和监督控制模块高通道数的分布式应用程序日志记录的虚拟仪器数据和监督控制模块，提供了一个完整的解决方案。
使用LabVIEW中的TCP/IP和UDP协议前言互联网络协议(IP)，用户数据报协议(UDP)和传输控制协议(TCP)是网络通信的基本的工具。
TCP与IP的名称来自于一组最著名的因特网协议中的两个--传输控制协议和互联网络协议。
你能使用TCP/IP来进行单一网络或者互连网络间的通信。
单独的网络会被大的地理距离分隔。
TCP/IP把数据从一个子网网络或者因特网连接的计算机发送到另一个上。
因为TCP/IP 在大多数计算机上是可用的，它能在多样化的系统中间传送信息。
LabVIEW和TCP/IP你能在所有平台上的LabVIEW中使用TCP/IP。
LabVIEW包含了TCP和UDP程序还有能让你建立客户端或者服务器程序的功能。
IPIP执行低层次的计算机间的数据传送。
在组成部分里的IP数据包称为数据报。
一个数据报包含表明来源和目的地地址的数据和报头字。
IP为通过网络或者因特网把数据发送到指定的目的地的数据报确定正确的路径。
IP协议并不能保证发送。
事实上，如果数据报在传输中被复制，IP可能多次传送一个单独的数据报。
所以，程序很少用IP而是用TCP或者UDP代替。
UDPUDP在计算机进程中提供简单而低层次的通信。
进程通过把数据报发送到一个目的地计算机或者端口进行通信。
一个端口是你发送数据的位置。
IP处理计算机对计算机的发送。
在数据报到达目的地计算机后，UDP把数据报移动到其目的端口。
如果目的端口不是开放的，UDP 将删除数据报。
UDP将发生IP的同样的发送问题。
应用程序的UDP的可靠性不强。
例如，一项应用程序能经常把大量信息的数据传送到目的地而丢失少量的数据是肯定的。
在LabVIEW中使用UDP协议因为UDP不是一个TCP似的一个以连接为基础的协议，在你发送或者收到数据之前，你不需要和目的地建立一种连接。
相反，当你每发送一个数据报时，由你指定数据目的地。
操作系统不会报告传输差错使用UDP打开功能在一个端口上打开一个UDP插口。
虚拟函数波形发生器中英文资料外文翻译文献The Design of Virtual Function waveform Generator Abstract—In this paper, a Virtual Function Signal Generator is designed Based on Labview. How to design the generator is introduced in detail. The Virtual Function Signal Generator can generate basic wave such as Sine wave, formula wave, white noise etc. The generator has functions like wave showing and date saving in addition. Keywords- Virtual Instrument; Labview;Function Signal GeneratorI. INTRODUCTIONThe function signal generator is applied in great many of fields. Virtual Instrument is a new type of instrument which has especial functions that old one do not have. One VI includes PC, hardware which is particularly designed and special software. Being a graphical programming language Labview is used for date gathering, instrument controlling and date analyzing. How to design virtual function signal generator by Labview is explained in detail in the following paper.II. TOTAL DESIGNAccording to the principle of function signal generator,four parts were designed to compose virtual function signal generator. These four parts are property setting, signal generating, wave showing and date saving.A. Panel of GeneratorIn this system the panel are divided to property setting panel(fig.1) and total structure panel(fig.2) . Main options in the first one are frequency, amplitude, duty cycle and samples etc. about signal. These properties can be set in this panel. Total structure panel just includes four parts that were presented above and some additional parts.Figure 1.Property Set Panel Figure2.Total Structure PanelB. Function about InstrumentsThe Virtual Function Signal Generator can generate basic waves such as Sine wave , special waves like formula wave and some kinds of noise. Signal’s frequency can be regulated delicately or roughly. Property can be reset quickly and be used as subprogram sometimes. Moreover has the generator functions like wave showing and date saving etc.III. SOFTWARE ABOUT VIRTUAL FUNCTION SIGNALGENERATORThe Virtual Function Signal Generator was designed base on Labview 7.0. There are three modules which compose this system: module of property setting, wave generating, wave showing and saving.A. Module of Property SettingFrequency setting and property resetting are two important parts of this module. How to change frequency value multiply is explained in fig.3. Node Selectting is applied repeatedly and skillfully so that data can be input in many channels. Then select data by switch button. So frequency controlling can be designed as real instrument. How to reset property quickly is explained in fig.4.Figure4. Property ResetFigure3. Frequency ControlB. Module of Wave GeneratingThis module is the core of the Virtual Function Signal Generator. Structure CASE is used in this work. By special node many types of waves can be generated. For example, how to generate sine wave is explained in fig.5. The other ones can be generated in similar way.Figure5.Graphical Progranm About Sine Wave GenerateC. Module of Wave Showing and SavingIn fact this module is a composite one which include many functions as operating, applying, debugging, showing etc. Because of lots of acts would be operated though this interface, this interface must be not only practical but also nice. Fig.6 just explained how to solve these problems.Figure6.Graphical Program About TotalIV. CONCLUSIONBeing graphical language, Labview is very strong and easy tool to make system of measure and test. Virtual Function Signal Generator based on Labview has advantages such as having friendly interface, operating easily etc. It can generate many types of function signals which have big range of value of frequency and its output datas can be saved. So it can be applied widely.虚拟函数波形发生器的设计摘要在本次设计中,虚函数信号发生器是基于相位差来设计的。
IMAQ Learn Pattern 2 VI在匹配阶段创建您要搜索的图案匹配的模板图像的描述，此描述的数据被附加到输入模板图像中。
在匹配阶段，从模板图像中提取模板描述符并且用于从检查图像中搜索模板。
Image：是一个您要搜索模板图像的参考检查图像。
Learn Pattern Setup Data（学习模式设置数据）：是一个字符串，包含从本控件或从高级控件（IMAQ Advanced Setup Learn Pattern 2 VI）获得的信息。
如果此引脚没有连接，在学习阶段VI使用默认参数。
Learn Mask（学习面膜）：是一个可选的屏蔽图像，此图片必须是U8模式的图像。
在VI中只学习那些在源图像中相应掩模为零的像素，非零像素被忽略。
不要设置这个参数来学习整个图像。
Template Image Out：是一个参考的模板，此模板图像包含的数据定义在匹配阶段的模板模式IMAQ Setup Learn Pattern 2 VI设置学习阶段，图案匹配过程中使用的参数。
执行IMAQ Learn Pattern 2 VI之前执行此VI。
Learn Mode：学习模板时，使用此引脚指定的不变性模式。
All(0) （默认值）提取移位和旋转不变匹配的模板信息Shift Information(1) 提取平移不变性匹配的信息。
Rotation Information(2) 提取旋转不变匹配的信息。
Learn Pattern Setup Data（学习模式设置数据）：是一个字符串，包含学习阶段设置参数选择的信息。
此输出连接到IMAQ Learn Pattern 2 VI或IMAQ Advanced Setup Learn Pattern 2 VIIMAQ Setup Match Pattern 2 VIIMAQ设定匹配模式2 VI设置图案匹配的匹配阶段所使用的参数。
执行此VI前IMAQ Match Pattern 2 VI 或IMAQ Refine Matches VI。
LabVIEW程序框图设计摘要：一个真正好的程序就像一件艺术品一样，而差的程序看起来就像意大利面那样乱。
这篇文章提出的风格能确保我们实际应用中在规定时间内开发出整洁，结构清晰的程序。
结合其他规则，我们能开发出可读性好的，易于维护的LabView源代码。
LabVIEW的程序框图长于源代码表述。
一个真正好的程序是发人深省的，甚至是令人敬畏的，就是一件艺术品一样。
而一个差的程序，看起来就像一碗意大利面条那样凌乱。
事实上，这两种极端的情况就像《风格的重要性》中Meticulous VI 和 Spaghetti VI所表现的那样。
而大部分程序处于艺术品和意大利面条之间。
一些程序开发者有连线整齐的习惯，但程序框图往往却大而宽泛。
其他的一些程序开发者却过度使用模块化编程，就像自己在搭建筑一样。
而仍有一些编程人员喜欢使用变量方式而非数据流方式。
很多很多开发人员在文档上节省时间。
此外，很多程序是在好的风格和节约时间两者之间取得平衡下为特征下完成工作的。
总体结论就是在吸引人的程序外观，个人喜好和程序功能上取得折中。
大多数开发人员都错误认为吸引人的程序编写上受到许多束缚使开发进度变慢，而现实中程序开发都有时间限制。
似乎快速开发程序的和程序具有美感是相矛盾的。
事实上，多花些时间来优化复杂程序的外观是可能的如果你知道什么才是好的风格所要遵循的规则和如何执行这些规则，你将会在程序开发中更加轻松。
屏幕分辨率决定程序开发人员在开发程序时的可见区域和程序移植到用户计算机后的界面显示。
因此，将程序分辨率统一是非常有好处的，那样应用程序在使用相同分辨率的PC上打开时窗口界面将保存一致。
程序分辨率设置得越高，界面上的控件将根据屏幕大小相应的缩小，屏幕上也能容纳更多的程序代码。
合适的屏幕分辨率是不仅要能使程序的可见区域最大化，而且不能让你的眼睛不舒服。
LabView开发环境设定的最小程序分辨率为1024*768。
与PC显示技术发展相适应的1280*1024的屏幕分辨率能提供更多的可视区域。
LabVIEWLabVIEW is a highly productive graphical programming language for building data acquisition an instrumentation systems.With LabVIEW, you quickly create user interfaces that give you interactive control of your software system. To specify your system functionality,you simply assemble block diagrams - a natural design notation for scientists and engineers. Tis tight integration with measurement hardware facilitates rapid development of data acquisition ,analysis,and presentation bVIEW contains powerful built -in measurement analysis and a graphical compiler for optimum performance. LabVIEW is available for Windows 2000/NT/Me/9x, Mac OS, Linux, Sun Solaris, and HP-UX, and comes in three different development system options.Faster DevelopmentLabVIEW accelerates development over traditional programming by 4 to 10 times! With the modularity and hierarchical structure of LabVIEW, you can prototype ,design, and modify systems in a short amount of time. You can also reuse LabVIEW code easily and quickly in other applications.Better InvestmentUsing a Lab VIEW system, each user has access to a complete instrumentation laboratory at less than the cost of a single commercial instrument. In addition, user configurable LabVIEW systems are flexible enough to adapt to technology changes, resulting in a better bong-term investment.Optimal PerformanceAll LabVIEW applications execute at compiled speed for optimal performance. With the LabVIEW Professional Development System or Application Builder, you can build stand-alone executables or DLLs for secure distribution of your code. You can even create shared libraries or DLLs to call LabVIEW code from other programming languages.Open Development EnvironmentWith the open development environment of LabVIEW, you can connect to other applications through ActiveX, the Web, DLLs, shared libraries, SQL(for databases), DataSocket, TCP/IP,and numerous other e LabVIEW to quickly create networked measurement and automation systems that integrate the latest technologies in Web publishing and remote data sharing. LabVIEW also has driver libraries available for plug-in data acquisition, signal conditioning , GPIB,VXI,PXI, computer-based instruments,serial protocols, image acquisition, and motion control. In addition to the LabVIEW development systems, National Instruments offers a variety of add-on modules and tool sets that extend the functionality of LabVIEW .This enables you to quickly build customizable, robust measurement and automation systems.LabVIEW Datalogging and Supervisory Control ModuleFor high channel count and distributed applications, the LabVIEW Datelogging and Supervisory Control Module provides a complete solution. This module delivers I/O management, event logging and alarm management, distributed logging, historical and real-time trending, built-in security, configurable networking features, OPC device connectivity, and over 3,300 built-in graphics.LabVIEW Real-TimeFor applications that require real-time performance, National Instruments offers LabVIEW Real-Time. LabVIEW Real-Time downloads standard LabVIEW code to a dedicated hardware target running a real-time operating system independent from Windows.LabVIEW Vision Development ModuleThe LabVIEW Vision Development Module is for scientists, automation engineers,and technicians who are developing LabVIEW machine vision and scientific imaging applications. The LabVIEW Vision Development Module includes IMAQ Vision, a library of vision functions, and IMAQ Vision Builder, an interactive environment for vision applications. Unlike any other vision products, IMAQ Vision Builder and IMAQ Vision work together to simplify vision software development so that you can apply vision to your measurement and automation applications.Countless ApplicationsLabVIEW applications are implemented in many industries worldwide including automotive, telecommunications, aerospace, semiconductor, electronic design and production, process control, biomedical, and many others, Applications cover all phases of product development from research to design to production and to service. By leveraging LabVIEW throughout your organization you can save time and money by sharing information and software.Test and MeasurementLabVIEW has become an industry-standard development tool for test and measurement applications. With Test Stand, LabVIEW-based test programs, and the industry's largest instrument driver library, you have a single, consistent development and execution environment for your entire system.Process Control and Factory AutomationLabVIEW is used in numerous process control and factory automation applications.Many scientists and engineers look to LabVIEW for the high speed, high channel count measurement and control that graphical programming offers.For large, complex industrial automation and control applications, the LabVIEW Data logging and Supervisory Control Module provides the same graphical programming as LabVIEW, but is designed specifically for monitoring large numbers of I/O points, communicating with industrial controllers and networks, and providing PC-based control.Machine Monitoring and ControlLabVIEW is ideal for machine monitoring and predictive maintenance applications that need deterministic control, vibration analysis, vision and image processing, and motion control. With the LabVIEW platform of products including LabVIEW Real-Time for real-time deterministic control and the LabVIEW Data logging and Supervisory Control Module, scientists and engineers can create powerful machine monitoring and control applications quickly and accurately.Research and AnalysisThe integrated LabVIEW measurement analysis library provides everything you need in an analysis package. Scientists and researchers have used LabVIEW to analyse and compute real results for biomedical, aerospace, and energy research applications, and in numerous other industries. The available signal generation and processing, digital filtering, windowing, curve-fitting, For specialized analysis, such as joint time-frequency analysis, wavelet,and model-based spectral analysis, LabVIEW offers the specially designed Signal ProcessingToolset.The Sound and Vibration Toolset offers octave analysis, averaged and nonaveraged frequency analysis, transient analysis, weighted filtering, and sound-level measurement, and more.Draw Your Own SolutionWith LabVIEW, you build graphical programs called virtual instruments (VIs) instead of writing text-based programs. You quickly create front panel user interfaces that give you the interactive control of your system. To add functionality to the user interface, you intuitively assemble block diagrams- a natural design notation for engineers and scientists.Create the Front PanelOn the front panel of your VI, you place the controls and data displays for your system by selecting ob jects from the Controls palette, such as numeric displays, meters, gauges, thermometers, LEDs, charts,and graphs.When you complete and run your VI,you use the front panel to control your system whether you move a slide, zoom in on a graph, or enter a value with the keyboard.Construct the Graphical Block DiagramTo program the VI, you construct the block diagram without worrying about the syntactical details of text-based programming languages. You do this by selecting objects (icons) from the Functions palette and connecting them together with wires to transfer data among block diagram objects. These objects include simple arithmetic functions, advanced acquisition and analysis routines, network and file I/O operations, and more.Dataflow ProgrammingLabVIEW uses a patented dataflow programming model that frees you from the linear architecture of text-based programming languages. Because the execution order in LabVIEW is determined by the flow of data between nodes,and not by sequential lines of text,you can create block diagrams that execute multiple operations in parallel. Consequently, LabVIEW is a multitasking system capable of running multiple execution threads and multiple VIs in parallel.Modularity and HierarchyLabVIEW VIs are modular in design, so any VI can run by itself or as part of another VI. You can even create icons for your own VIs, so you can design a hierarchy of VIs that serve as application building blocks. You can modify, interchange, and combine them with other VIs to meet your changing application needs.Graphical CompilerIn many applications, execution speed is critical. LabVIEW is the only graphical programming system with a compiler that generates optimized code with execution speeds comparable to compiled C programs. You can even use the LabVIEW profiler to analyse and optimize time-critical operations. Consequently, you increase your productivity with graphical programming without sacrificing execution speed.Measurements and MathematicsLabVIEW includes a variety of other measurement analysis tools. Examples include curve fitting, signal generation, peak detection, and probability and statistics. Measurement analysis functions can determine signal characteristics such as DC/RMS levels, total harmonic distortion (THD),impulse response, frequency response, and cross-power spectrum. LabVIEW users can also deploy numerical tools for solving differential equations, optimization, root finding, and other mathematical problems.In addition, you can extend these built-in capabilities by entering MATLAB or HIQ scripts directly in your LabVIEW programs. For charting and graphing, you canrely on the built-in LabVIEW 2D and 3D visualization tools. 2D tools include features such as autoscaling X and Y ranges, reconfigurable attributes (point/line styles, colors, and more)and cursors, Microsoft Windows users can employ OpenGL-based 3D graphs and then dynamically rotate, zoom, and pan these graphs with the mouse.Development SystemThe LabVIEW Professional Development System facilitates the development of high-end, sophisticated instrumentation systems for developers working in teams, users developing large suites of VIs, or programmers needing to adhere to stringent quality standards.Built on the Full Development System, the Professional Development System also includes the LabVIEW Application Builder for building stand-alone executables and shared libraries (DLLs）and creating distribution kits. In addition, the development system furnishes source code control tools and offers utilities for quantitatively measuring the complexity of your applications. With graphical differencing, you can quickly identify both cosmetic and functional differences between two LabVIEW applications.We include programming standards and style guides that provide direction for consistent LabVIEW programming methodology. The system also contains quality standards documents that discuss the steps LabVIEW users must follow to meet internal regulations or FDA approval. The Professional Development System operates on Windows 2000/NT/Me/9x,Mac OS, HP-UX, and Linux.LabVIEW Full Development SystemThe LabVIEW Full Development System equips you with all of the tools you need to develop instrumentation systems. It includes GPIB, VISA, VXI, RS-232, DAQ, and instrument driver libraries for data acquisition and instrument control. The measurement analysis add DC/RMS measurements, single tone analysis, harmonic distortion analysis, SINAD analysis, limit testing, signal generation capabilities, signal processing, digital filtering, windowing, curve fitting, statistics, and a myriad of linear algebra and mathematical functions. The development system also provides functions for direct access to DLLs, ActiveX, and other external code. Other features of the system include Web publishing tools, advanced report generation tools, the ability to call MATLAB and HiQ scripts, 3D surface, line, and contour graphs, and custom graphics and animation. The Full Development System operates on Windows 2000/NT/Me/9x, Mac OS, HP-UX, and Linux.LabVIEW Base PackageUse the LabVIEW Base Package, the minimum LabVIEW configuration, for developing data acquisition and analysis, instrument control, and basic data presentation. The Base Package operates on Windows 2000/NT/Me/9x.Debug License for LabVIEWIf you deploy LabVIEW applications, including LabVIEW tests for use with Test Stand, the debug license allows you to install the LabVIEW development system on the target machines so you can step into your test code for complete test debugging. This license is not intended for program development.虚拟仪器（LabVIEW）虚拟仪器是一种高效用于构建数据采集与监测系统图形化编程语言。
美国国家仪器公司的LabVIEW ：一种实验室自动化和测量的编程环境美国国家仪器公司的LABVIEW是一种图形化编程语言，它的根源在于自动化控制和数据采集。
其图形化的代表性，类似于过程流程图，它为科学家和工程师提供一个直观的编程环境，在过去20年中成熟历程中，这个语言已经成为一个通用的编程环境。
LABVIEW使得它成为很好的自动化选择环境有几个主要特点，这些措施包括简单的网络通信，交钥匙执行共同的通信协议（RS232 ，GPIB总线等），成为过程控制和数据拟合、快速简便的用户界面的建设和一个有效率的程式码执行环境的强大工具。
我们讨论这种语言的优点，并提供一个例子，在公司内部是用来在整合和控制自动化平台的应用套件的书面。
关键词：NI LABVIEW ;图形化编程;系统集成;仪表控制;基于组件的体系结构;机器人;自动化;静态调度;动态调度;数据库导言cytokinetics是一个侧重于以小分子疗法发现细胞骨架为目标的生物制药公司。
自成立以来，我们形成了一个强大的技术基础设施，以支持我们发现药物的努力。
基础设施能提供以百万计画面显示化合物的能力，每年在测试范围从基于图像细胞检测与表型读出的复合生化检测模仿生物功能的自动化的能力。
要求处理这些数字和多样性的检测已授权部署多个综合自动化系统。
举例来说，我们有几个平台：生化检查，系统的活细胞处理系统，自动显微镜系统，以及一个自动复合存储和检索系统。
每一个在公司内部的综合系统是根据其打算使用范围，围绕着机械臂，并包含一个最佳的一套板加工外设（如移液设备，板读者，carousels ）设计的。
为了创造最灵活，高性能极具成本效益的系统，我们已采取的做法是在内部建设自己的系统。
这给赋予我们整合能力最适当的硬件和软件解决方案，无论是否从供应商购买或工程重新进行，因此我们可以迅速修改系统的检测要求的变化。
最大限度地平台的一致性和模块化，我们每10个自动化平台是由一个共同- 1 -的控制的，我们开发时使用美国国家仪器公司（Ni ）的分布式应用套件LABVIEW。
基于LabVIEW的虚拟仪器模拟风力太阳能系统混合动力站（节选）介绍在最简单的层面上，数据采集可以手动完成如使用纸笔记录读数或任何其他工具。
对于某些应用这种形式的数据采集是足够的。
然而，数据记录中的应用这需要大量的数据读数，非常频繁的录音是有必要的，它包括了仪器或微控制器获取和记录数据准确（1995里格比和多尔比，）。
急诊化验室虚拟仪器工程平台（LabVIEW）是一个功能强大的灵活的仪器仪表和分析应用软件工具，（美国国家仪器仪表，2002）在今天这新兴技术并被广泛采用的学术界，工业LabVIEW已成为一个重要的工具，已代替了政府实验室数据的标准采集，仪器控制和分析软件。
现有的1.5千瓦的额定风力太阳能混合动力站显示（图1）。
设计与施工的可再生能源发电系统报告（磐诚，等铝，2000）。
在大学校园的平台上，有良好的教育机会本科生和研究生以现有的风力太阳能知识，学生们在协同研究基于风力太阳能发电站的传统的电网火力发电厂。
特别是在一些组件可再生能源如蓄电池和直流电源逆变器，可导致供电质量和电网出现一些问题，当太阳风稳定性出现问题时，根据汽轮机和发电机（帕特尔，1999）的电力系统与化石燃料这些相互作用都是由于大量的不同动力学参与的风力涡轮机和蒸汽涡轮机。
图1显示了photovol TAIC（PV）与太阳能电池板120个W评级，mastmounted1千瓦的风力涡轮机，和风速计，包括风方向和速度传感器的风能太阳能发电站并行运作，并收取12 V电池组包括六个深循环铅酸电池。
太阳面板安装在机架上的轨道，白天太阳光从320个0度的初始位置度。
该系统还包括基于固态器件的一个1.5kVA额定直流到交流电源逆变器，保护设备如交流和直流电路断路器，熔断器，避雷器，一套线性和非线性负载，连接电缆，和接线盒。
在国家的电压和电流系统学生们介绍了稳定的研究，说明了电能质量由于小的线性和非线性负荷的影响（磐诚和蒂默曼，1999）。
译文1、虚拟仪器的产生背景当今我们处于一个正在高度发展的信息社会，要求在有限的时空上实现大量信息的交换，必然带来信息密度的急剧增大，要求电子系统对于信息的处理速度越来越高，功能越来越强，这使得系统结构日趋复杂。
一方面电子技术及市场的发展从客观上要求测试仪器向自动化及柔性化的方向发展，另一方面，电子技术及市场的发展也给虚拟仪器的产生提供了可能。
在这种形式下，基于微计算机的虚拟仪器逐步变得现实，它的出现和广泛使用为测试系统的设计提供一个极佳的模式，并且使工程师们在测量和控制方面得到强大功能和灵活性。
2虚拟仪器的概念虚拟仪器(Virtual Instrument，简称VI)的概念是由美国国家仪器公司(NI)在20世纪80年代最早提出的。
虚拟仪器就是在以通用计算机为核心的硬件平台上，由用户设计定义、具有虚拟前面板、测试功能由测试软件实现的一种计算机仪器系统。
其核心的思想是利用计算机的强大资源使本来需要硬件实现的技术软件化，以便最大限度地降低系统成本，增强系统功能与灵活性。
虚拟仪器代表着从传统硬件为主的测试系统到以软件为中心的测试系统的根本性转变。
虚拟仪器的出现是仪器发展史上的一场革命，代表着仪器发展的最新方向和潮流，对科学技术的发展和工业生产的进步将产生不可估量的影响。
虚拟仪器具有性能高、扩展性强、开发时间短、无缝集成等优势。
3. 图形化虚拟仪器开发平台—LABVIEW 简介及其优势LABVIEW是Laboratory Virtual Instrument Engineering Workbench (实验室虚拟仪器集成开发环境)的简称，是由美国国家仪器公司(National instruments, IN)创立的一个功能强大而又灵活的仪器和分析应用开发工具。
Labview一种图形化的编程语言，主要用来开发数据采集，仪器控制及数据处理分析等软件，功能强大。
目前，该开发软件在国际测试、测控行业比较流行，在国内的测控领域也得到广泛应用。
LabVIEWLabVIEW is a highly productive graphical programming language for building data acquisition an instrumentation systems.With LabVIEW, you quickly create user interfaces that give you interactive control of your software system. To specify your system functionality,you simply assemble block diagrams - a natural design notation for scientists and engineers. Tis tight integration with measurement hardware facilitates rapid development of data acquisition ,analysis,and presentation bVIEW contains powerful built -in measurement analysis and a graphical compiler for optimum performance. LabVIEW is available for Windows 2000/NT/Me/9x, Mac OS, Linux, Sun Solaris, and HP-UX, and comes in three different development system options.Faster DevelopmentLabVIEW accelerates development over traditional programming by 4 to 10 times! With the modularity and hierarchical structure of LabVIEW, you can prototype ,design, and modify systems in a short amount of time. You can also reuse LabVIEW code easily and quickly in other applications.Better InvestmentUsing a Lab VIEW system, each user has access to a complete instrumentation laboratory at less than the cost of a single commercial instrument. In addition, user configurable LabVIEW systems are flexible enough to adapt to technology changes, resulting in a better bong-term investment.Optimal PerformanceAll LabVIEW applications execute at compiled speed for optimal performance. With the LabVIEW Professional Development System or Application Builder, you can build stand-alone executables or DLLs for secure distribution of your code. You can even create shared libraries or DLLs to call LabVIEW code from other programming languages.Open Development EnvironmentWith the open development environment of LabVIEW, you can connect to other applications through ActiveX, the Web, DLLs, shared libraries, SQL(for databases), DataSocket, TCP/IP,and numerous other e LabVIEW to quickly create networked measurement and automation systems that integrate the latest technologies in Web publishing and remote data sharing. LabVIEW also has driver libraries available for plug-in data acquisition, signal conditioning , GPIB,VXI,PXI, computer-based instruments,serial protocols, image acquisition, and motion control. In addition to the LabVIEW development systems, National Instruments offers a variety of add-on modules and tool sets that extend the functionality of LabVIEW .This enables you to quickly build customizable, robust measurement and automation systems.LabVIEW Datalogging and Supervisory Control ModuleFor high channel count and distributed applications, the LabVIEW Datelogging and Supervisory Control Module provides a complete solution. This module delivers I/O management, event logging and alarm management, distributed logging, historical and real-time trending, built-in security, configurable networking features, OPC device connectivity, and over 3,300 built-in graphics.LabVIEW Real-TimeFor applications that require real-time performance, National Instruments offers LabVIEW Real-Time. LabVIEW Real-Time downloads standard LabVIEW code to a dedicated hardware target running a real-time operating system independent from Windows.LabVIEW Vision Development ModuleThe LabVIEW Vision Development Module is for scientists, automation engineers,and technicians who are developing LabVIEW machine vision and scientific imaging applications. The LabVIEW Vision Development Module includes IMAQ Vision, a library of vision functions, and IMAQ Vision Builder, an interactive environment for vision applications. Unlike any other vision products, IMAQ Vision Builder and IMAQ Vision work together to simplify vision software development so that you can apply vision to your measurement and automation applications.Countless ApplicationsLabVIEW applications are implemented in many industries worldwide including automotive, telecommunications, aerospace, semiconductor, electronic design and production, process control, biomedical, and many others, Applications cover all phases of product development from research to design to production and to service. By leveraging LabVIEW throughout your organization you can save time and money by sharing information and software.Test and MeasurementLabVIEW has become an industry-standard development tool for test and measurement applications. With Test Stand, LabVIEW-based test programs, and the industry's largest instrument driver library, you have a single, consistent development and execution environment for your entire system.Process Control and Factory AutomationLabVIEW is used in numerous process control and factory automation applications.Many scientists and engineers look to LabVIEW for the high speed, high channel count measurement and control that graphical programming offers.For large, complex industrial automation and control applications, the LabVIEW Data logging and Supervisory Control Module provides the same graphical programming as LabVIEW, but is designed specifically for monitoring large numbers of I/O points, communicating with industrial controllers and networks, and providing PC-based control.Machine Monitoring and ControlLabVIEW is ideal for machine monitoring and predictive maintenance applications that need deterministic control, vibration analysis, vision and image processing, and motion control. With the LabVIEW platform of products including LabVIEW Real-Time for real-time deterministic control and the LabVIEW Data logging and Supervisory Control Module, scientists and engineers can create powerful machine monitoring and control applications quickly and accurately.Research and AnalysisThe integrated LabVIEW measurement analysis library provides everything you need in an analysis package. Scientists and researchers have used LabVIEW to analyse and compute real results for biomedical, aerospace, and energy research applications, and in numerous other industries. The available signal generation and processing, digital filtering, windowing, curve-fitting, For specialized analysis, such as joint time-frequency analysis, wavelet,and model-based spectral analysis, LabVIEW offers the specially designed Signal ProcessingToolset.The Sound and Vibration Toolset offers octave analysis, averaged and nonaveraged frequency analysis, transient analysis, weighted filtering, and sound-level measurement, and more.Draw Your Own SolutionWith LabVIEW, you build graphical programs called virtual instruments (VIs) instead of writing text-based programs. You quickly create front panel user interfaces that give you the interactive control of your system. To add functionality to the user interface, you intuitively assemble block diagrams- a natural design notation for engineers and scientists.Create the Front PanelOn the front panel of your VI, you place the controls and data displays for your system by selecting ob jects from the Controls palette, such as numeric displays, meters, gauges, thermometers, LEDs, charts,and graphs.When you complete and run your VI,you use the front panel to control your system whether you move a slide, zoom in on a graph, or enter a value with the keyboard.Construct the Graphical Block DiagramTo program the VI, you construct the block diagram without worrying about the syntactical details of text-based programming languages. You do this by selecting objects (icons) from the Functions palette and connecting them together with wires to transfer data among block diagram objects. These objects include simple arithmetic functions, advanced acquisition and analysis routines, network and file I/O operations, and more.Dataflow ProgrammingLabVIEW uses a patented dataflow programming model that frees you from the linear architecture of text-based programming languages. Because the execution order in LabVIEW is determined by the flow of data between nodes,and not by sequential lines of text,you can create block diagrams that execute multiple operations in parallel. Consequently, LabVIEW is a multitasking system capable of running multiple execution threads and multiple VIs in parallel.Modularity and HierarchyLabVIEW VIs are modular in design, so any VI can run by itself or as part of another VI. You can even create icons for your own VIs, so you can design a hierarchy of VIs that serve as application building blocks. You can modify, interchange, and combine them with other VIs to meet your changing application needs.Graphical CompilerIn many applications, execution speed is critical. LabVIEW is the only graphical programming system with a compiler that generates optimized code with execution speeds comparable to compiled C programs. You can even use the LabVIEW profiler to analyse and optimize time-critical operations. Consequently, you increase your productivity with graphical programming without sacrificing execution speed.Measurements and MathematicsLabVIEW includes a variety of other measurement analysis tools. Examples include curve fitting, signal generation, peak detection, and probability and statistics. Measurement analysis functions can determine signal characteristics such as DC/RMS levels, total harmonic distortion (THD),impulse response, frequency response, and cross-power spectrum. LabVIEW users can also deploy numerical tools for solving differential equations, optimization, root finding, and other mathematical problems.In addition, you can extend these built-in capabilities by entering MATLAB or HIQ scripts directly in your LabVIEW programs. For charting and graphing, you canrely on the built-in LabVIEW 2D and 3D visualization tools. 2D tools include features such as autoscaling X and Y ranges, reconfigurable attributes (point/line styles, colors, and more)and cursors, Microsoft Windows users can employ OpenGL-based 3D graphs and then dynamically rotate, zoom, and pan these graphs with the mouse.Development SystemThe LabVIEW Professional Development System facilitates the development of high-end, sophisticated instrumentation systems for developers working in teams, users developing large suites of VIs, or programmers needing to adhere to stringent quality standards.Built on the Full Development System, the Professional Development System also includes the LabVIEW Application Builder for building stand-alone executables and shared libraries (DLLs）and creating distribution kits. In addition, the development system furnishes source code control tools and offers utilities for quantitatively measuring the complexity of your applications. With graphical differencing, you can quickly identify both cosmetic and functional differences between two LabVIEW applications.We include programming standards and style guides that provide direction for consistent LabVIEW programming methodology. The system also contains quality standards documents that discuss the steps LabVIEW users must follow to meet internal regulations or FDA approval. The Professional Development System operates on Windows 2000/NT/Me/9x,Mac OS, HP-UX, and Linux.LabVIEW Full Development SystemThe LabVIEW Full Development System equips you with all of the tools you need to develop instrumentation systems. It includes GPIB, VISA, VXI, RS-232, DAQ, and instrument driver libraries for data acquisition and instrument control. The measurement analysis add DC/RMS measurements, single tone analysis, harmonic distortion analysis, SINAD analysis, limit testing, signal generation capabilities, signal processing, digital filtering, windowing, curve fitting, statistics, and a myriad of linear algebra and mathematical functions. The development system also provides functions for direct access to DLLs, ActiveX, and other external code. Other features of the system include Web publishing tools, advanced report generation tools, the ability to call MATLAB and HiQ scripts, 3D surface, line, and contour graphs, and custom graphics and animation. The Full Development System operates on Windows 2000/NT/Me/9x, Mac OS, HP-UX, and Linux.LabVIEW Base PackageUse the LabVIEW Base Package, the minimum LabVIEW configuration, for developing data acquisition and analysis, instrument control, and basic data presentation. The Base Package operates on Windows 2000/NT/Me/9x.Debug License for LabVIEWIf you deploy LabVIEW applications, including LabVIEW tests for use with Test Stand, the debug license allows you to install the LabVIEW development system on the target machines so you can step into your test code for complete test debugging. This license is not intended for program development.虚拟仪器（LabVIEW）虚拟仪器是一种高效用于构建数据采集与监测系统图形化编程语言。
