DAQ数据采集系统

利用labview语言进行平均值的滤波分析，并得出分析的结果(use labview to achieve the average value filter)

说明：  NI公司的各种版本的labview,daq，09到17年，打开网址找到你需要的版本，下载安装包(Various versions of labview, DAQ)

登录界面的设计，通过串口visa对电压电流温度的采集并显示且存库，又有查询功能(Visa serial acquisition of voltage and current temperature and displays the repository, but also the query function)

实现功率信号谱的测量，功能丰富，可测性较强，能够实现复杂功能(Achieve power signal spectrum measurement, feature-rich, testability strong, complex functions can be achieved)

能够生成正弦信号并且做FFT分析，程序可以直接使用，没有密码(Can generate sinusoidal signals and do FFT)

说明：  用户自行输入所需要的频率和占空比，得到PWM波(Users input the required frequency and duty cycle to get the PWM wave.)

通过输入用户名和密码后登录，实现输入正确和错误提示、登录前禁用并灰显读取按钮、登录后启用读取按钮、读取并显示文本文件内容、加密程序框图查看操作。(By inputting user name and password and login, we can input correct and error prompts, disable and gray display the reading button before login, enable the reading button after login, read and display the contents of text files, and view the encrypted program block diagram.)

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)

主要是labview在串口通讯过程中，采用modbus-crc 16 位校验方法(LabVIEW is mainly used in the serial communication process, using modbus-crc 16 bit calibration method.)

labview频率响应函数与数字滤波实验.vi(labview frequency response function, digital filtering experiments. vi)