labview

一随机数组，按从小到大排列，基于公式节点做的(A random number group is arranged from the smallest to the largest, based on the formula node.)

labview中用程序去产生一个触发事件是个难点，相关的介绍和例子并不多，本程序使用值属性信号结点改变的方法去产生一个事件，实现程序控制产生触发事件的功能，labview开发版本8.2。(labview using the program to generate a trigger event is difficult, relevant examples of the introduction are not many,here we use the value change of the node attribute of the signal to generate an event, the realized the program control functions to generate trigger events, the version of labview development is 8.2 .)

锁相技术在测控、通信、数字信号处理等众多领域得到了广泛的应用。虚拟锁相环成为锁相环发展趋势之一，根据锁相环路的基本组成及原理，利用LabVIEW软件提供的强大的数值计算和信号分析等能力对锁相环进行设计。实验和仿真结果表明该软件锁相环具有较好的捕获和跟踪性能。利用软件实现的锁相环比硬件锁相环具有更好的灵活性和通用性，同时具有结构简单、参数设计灵活等优点。(Lock-in technique in many areas of monitoring and control, communications, digital signal processing, has been widely used. Became one of the virtual phase-locked loop phase-locked loop trends, according to the basic principles of composition and phase-locked loop, using LabVIEW software provides powerful numerical calculation and signal analysis capabilities such as phase-locked loop design. Experimental and simulation results show that the software PLL has a better acquisition and tracking performance. Use of software than hardware locked loop PLL has better flexibility and versatility, but also has a simple structure, flexible design parameters, etc..)

本文在LabVIEW和NI-IMAQ Vision软件平台下，利用通用图像采集卡开发一种图像实时采集处理虚拟仪器系统。通过调用动态链接库驱动通用图像采集卡完成图像采集，采集图像的帧速率达到25帧每秒。利用NI-IMAQ Vision视频处理模块，进行图像处理，以完成光电探测器的标定。该系统具有灵活性强、可靠性高、性价比高等优点。(In LabVIEW and NI-IMAQ Vision software platform, the use of a common frame grabber to develop a real time image acquisition and processing the virtual instrument system. Drive general-purpose image acquisition card by calling the dynamic link library complete image acquisition, the acquisition of the image frame rate up to 25 per second. NI-IMAQ Vision video processing module, image processing, in order to complete the calibration of the photodetector. The system has the flexibility, high reliability, high cost.)

使用labview实现了FFT的变换，此方法更为简单快捷，同时简单明了(Labview achieved using FFT transform, this method is more simple and quick, and simple)

结合NI公司的数据采集硬件，运用labview2014开发设计了8通道数据采集软件，实现了界面曲线显示，本地数据保存和数据库数据存储等功能，希望给到帮助！(Combined with the company s NI data acquisition hardware, application development and design labview2014 8-channel data acquisition software, and the curve display interface, local data storage, and data storage and other functions, we want to give to help!)

报表程序，一个报表逐行写入表格的程序，可自定义写入。(Report program, a report written to the table line by line program, can be written to customize.)

气象数据测试，用于检测气象数据的记录和测试，及其自动话的实现(Weather Date Test)

非常好用的通讯转换，用于rs232，十六进制十进制转换(Very easy to use communication converter for rs232, hexadecimal decimal conversion)

实现图形化步进电机的系统控制操作，通过UI界面控制图形，例如三角形，矩形和正弦。图形代表步进电机的速度方向。主要实现通过图形控制角度和速度来实现步进电机控制系统。(Stepper motor to achieve a graphical operating system control through a graphical UI interface control, such as triangles, rectangles and sinusoidal. Graphical representation of the stepper motor speed direction. Mainly achieved through the graphical control angle and speed stepper motor control system.)