134line-ver1.2

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..)

使用4711采集卡，labview进行信号采集(Use 4711 acquisition card and labview to cquire the Signal)

说明：  用于读取txt文本文件，并显示在labview中(Used to read the numbers in the txt file and display them in LabVIEW)

说明：  一个不错的自动化测试案例，可以查看编程框架和一些数据类型用法(A good automation test case)

说明：  Labview battery tester

说明：  对单个边缘规则的近圆形图像进行拟合，并在原图像的基础上画近似圆(Fitting a single edge regular near-circular image and drawing an approximate circle on the basis of the original image)

实现基于软件无线电的OFDM系统仿真，利用USRP平台实现收发信号(The simulation of OFDM system based on software radio is realized, and the transceiver signal is realized by USRP platform.)

新建子VI（test2 oise_testing.vi），运用Express VI，实现噪声信号的采集、处理、显示和存储(The new sub VI (test2 oise_testing.vi) uses Express VI to realize the acquisition, processing, display and storage of noise signals)

主要实现了简单的声音处理：声音文件读取，声音文件写入，录取声音并写入，音效处理，包括：功率谱分析和滤波均衡。( U4E3B u8B1 u7B0 u4E86 u7B80 u5355 u7684 u58F0 u97F3 u5904 u7406 uFF1A u58F0 u97F3 u6587 u4EF6 u8BFB u53D6 uFF0C u58F0 u97F3 u6587 u4EF6 u5199 U5165 uFF0C u53D6 u58F0 u973 u5991 u5991 u5155 uF09 U6CE2 u5747 u8861 u3002)

labview的一些功能界面,包括支持向量机(Blind source separation)