基于LabVIEW的多功能数据采集与信号处理系统

针对传统仪器功能单一以及传统代码编程语言的不足,以LabVIEW为开发工具,采用计算机多线程技术、虚拟仪器技术及信号处理技术等,开发了基于W indows 2000及W indows XP的多功能数据采集与信号处理虚拟仪器系统。该系统具有以下功能:信号采集控制模块,可实现单通道、多通道数据的采集、存储与采样信号复现等功能;信号分析处理模块,可实现在线、离线信号分析处理功能,包括信号的时域、频域、幅值域、时频域的分析与处理、结果的显示等;数据库管理模块,可实现对采样和分析处理后数据的管理,包括数据查询、传输、存储等工作;另外,该系统还具有友好的人机界面,且方便对之进行维护和实现功能的扩充。

Multi-function Data Acquisition and Signal Processing System Based on LabVIEW

Considering the single function of the traditional instrument and the deficiencies of the traditional code programming language,a virtual multi-functional system for data acquisition and signal processing is developed by means of the software LabVIEW.The virtual instrument technology,the signal processing technology are adopted.The system includes the signal acquisition and control module which can realize the data acquisition with single channel or multi-channels as well as memory and signal recall,signal analysis and processing module which can realize the online or offline signal processing in time domain,frequency domain,time-frequency domain and amplitude domain,the data management module which can realize the management of data sampled and processed such as the data query,transfer and deposit.In addition,the system can provide a friendly man-machine interface.It is also convenient to the system maintenance and function expansion.