基于LabVIEW的数据采集与信号处理系统的设计

Data Acquisition and Signal Processing System Based on LabVIEW

介绍了虚拟仪器领域中最具代表性的图形化编程开发平台LabVIEW,并对基于LabVIEW编程环境实现数据采集进行了研究,设计实现了一种基于LabVIEW 8.5环境,以EM I噪声分析仪为下位机的数据采集与信号处理系统的设计方法.该设计方法主要实现了以RS232为代表的串口通讯,数组转换及频谱分析等功能,结果表明应用该设计方法设计出的系统具有简洁友好的人机界面,可直接在前面板上完成各种操作与观测.该设计方案较之目前大多数的设计方法相比有效地降低了程序的运算量,节省了运算时间,成功实现了实时无差错的采集到由下位机发来的完整数据.

LabVIEW is introduced in this paper as a kind of most representative graphical programming platforms in Virtual instrument field,and realizing data acquisition based on LabVIEW programming environment is studied,then a desire method of Data acquisition and Signal processing system used EMI noise analyzer as the next bit machine based on labview 8.5 is introduced.The system realized RS232 serial communication,array conversion and spectral analysis functions.The result shows that the system designed by this method has a simple and friendly interface,and that users can do every operation and observation in the front panel directly.This scheme reduces the calculation procedure effectively and save time,achieves the real-time and error-free collected the data integritily.