基于虚拟仪器的实时数据采集系统  

Design of Real-time Data Acquisition System Based on Virtual Instrument

作　　者：陈光建[1] 何华平[1] 贾金玲[1] 

机构地区：[1]四川理工学院计算机学院,四川自贡643000

出　　处：《仪表技术与传感器》2011年第4期49-50,110,共3页Instrument Technique and Sensor

基　　金：四川省教育厅青年基金项目(08ZB091);四川理工学院校级科研项目(2007ZR010)

摘　　要：为准确、高效地对心电信号进行实时监测,设计了一个基于虚拟仪器技术的实时数据采集系统。该系统采用上位机与下位机相结合的控制模式,以AT89S52单片机为核心构建了下位机数据采集模块;以LabVIEW为开发平台,设计了上位机控制软件;以CH341A芯片为基础构建了上位机与下位机之间的USB通信接口,最终实现了对数据采集、预处理、显示以及存储等功能。实验表明:该系统能够完成对心电信号的实时采集与处理,使用方便,具有较好的应用前景。In order to monitor ECG accurately and efficiently,a real-time data acquisition system which based on virtual instrument technique was designed.The system used upper computer and lower computer combined control mode,the data acquisition module of lower computer was built up taking the AT89S52 MCU as the main component.The upper computer software was designed using LabVIEW.The USB communication interface was built up taking CH341A chip as the foundation,the functions such as ECG collection,pretreatment,display and storage capabilities were realized.Experiments show that the system can complete real-time ECG acquisition and processing,it is easy to use and has good application prospects.

关 键 词：数据采集 单片机 虚拟仪器 USB 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]