基于LabVIEW的应变信号采集系统设计

Design of Data Acquisition and Analysis System Based on LabVIEW

根据一般动态应变信号标定和测试要求,利用NI公司数据采集设备及LabVIEW8.2软件平台,进行系统的二次开发,以拓展虚拟仪器系统的功能。系统包括电标定、动态数据采集、数据文件的存储等功能。充分利用Lab-VIEW G语言的编程功能,实现了DAQ控件与软件的有机结合,提高了数据采集的准确性。系统已在教学和科研中获得应用,使用效果良好。

Based on the dynamic calibration of general strain signal and testing requirements,the data acquisition equipment of NI company and the LabVIEW8.2 software platform were used to develop the second system and to expand the functionality of the virtual instrument system.The system included features of electrical calibration,dynamic data collection,data files storage,etc.Oganic combination of DAQ control with software was realized by making full use of the programming functions of LabVIEW G language,thus the accuracy of data acquisition was improved.The system had been applied in teaching and scientific research with good effects.