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labview中usb raw设备的读取和写入程序 非常有用(labview usb raw device in the read and write process is very useful)

在波形Graph显件上用两种不同颜色显示一条正弦曲线和一条余弦曲线，每 条曲线长度为128个点，其中正弦曲线的x0 =0，△x=1；余弦曲线的x0 =2， △x=5。并利用属性节点通过前面板控件改变每条曲线的颜色。 ①一个周期128点。 ②改变颜色一定要先选择曲线，然后再改变颜色。(A sine curve and a cosine curve are displayed in two different colors on the waveform Graph display. The length of the bar curve is 128 points, where the sine curve x0 =0, Delta x=1, the cosine curve x0 =2, Delta x=5. And use the attribute node to change the color of each curve through the front panel control. One cycle is 128 points. Change the color must first choose the curve, then change the color.)

说明：  labview采用DAQ采集数据进行采集。(LabVIEW uses DAQ to collect data.)

labwindow cvi 温度采集界面设计。通过随机函数产生温度采集效果(labwindow cvi temperature )

利用电脑的摄像头或者外部的USB摄像头，采集图片。(Use a computer camera or an external USB camera to collect pictures.)

一个完成labview项目，包括NI DAQ数据采集，串口数据采集，数据存储等功能。(A complete LabVIEW project, including NI DAQ data acquisition, serial port data acquisition, data storage and other functions.)

选择文件路径读取TDMS文件，选择是否校准，选择数据组名及通道名，对数据进行频谱分析(Spectrum analysis of the data from TDMS file.)

说明：  可实现串口的全双工功能，即接受和发送数据(It can realize full duplex function of serial port, i.e. receiving and sending data)

用labview实现振动信号采集,用于机械故障诊断，路形检测等(use labview to acquisit vibration signal )

解决LabVIEW里不能使用数码管字体的方法 用FontCreator软件打开字体，将字体的平台由“Windows Unicode BMP(UCS-2)”改为“Windows Symbol”即可。(Method for solving LabVIEW can not use digital tube font With FontCreator software to open the font, the font platform Unicode BMP Windows (UCS-2) to Symbol Windows can be.)