LABVIEW与PLC的OPC通讯

基于Labview的数字滤波器与频谱分析仪 滤波器可以选择是否打开滤波器，可显示波形，可设置滤波器参数，可测量时域、频域(Labview based digital filter and spectrum analyzer filter, you can choose whether to open the filter, you can display the waveform, you can set filter parameters, you can measure the time domain, frequency domain)

说明：  噪声检测，声卡采集，频率分析，数据统计分析，均方根(Noise detector,Sound card acquisition,frequency analysis,Statistical analysis of data,Root mean square)

labview使用xy绘图控件时对于有的需求要对图像做归一化处理(LabVIEW with XY drawing to achieve normalization)

说明：  上位机使用LABVIEW显示心跳曲线， USB采集，单片机采用STM32F103C8，心跳检测芯片采用AD8232，利用单片机自身AD转换(The upper computer uses LabVIEW to display the heartbeat curve, USB to collect, SCM uses stm32f103c8, heartbeat detection chip uses ad8232, SCM uses its own ad conversion)

LABVIEW的中文转成Unicode码的模块，可以作为发送短信模块的子VI使用。(LABVIEW of Chinese into Unicode code module, you can send SMS module as a sub VI uses.)

通过读取本地CSV文件，筛选里面数据后，传输至指定数据库(By reading the local CSV data, it is transmitted to the database.)

基于labVIEW的最小二乘法算拟合正弦波计算相位(Calculated based on least squares fitting labVIEW calculated phase sine wave)

说明：  labview调用dll实现QR二维码生成，包含dll说明等，可作为子vi直接使用-LabVIEW(calls the DLL implementation of QR code generation, including DLL, can be directly used as a sub VI)

test on two solenoid valves connecting on one hydraulic line on/off

利用Matlab的图象处理功能对摄象头采集到的仪表图象进行分析,得到指示值,同时利用dll 技术,在虚拟仪器编程软件Labview 中调用,输出得到对应的计算值,实现了对指针式仪表的自动监控,增加了整个系统的稳定性和可靠性。(Using Matlab image processing functions on the image pickup head collected instrument image analysis, to give the instruction value, while using dll technology, called the virtual instrument programming software LabVIEW, obtained from the output corresponding to the calculated value, the pointer Instrumentation automatic monitoring, increasing the stability and reliability of the whole system.)