基于STC单片机和LabVIEW的心音信号检测系统  

The heart sound signal detecting system based on STC microprocessor and LabVIEW

作　　者：周红标[1] 蒋鼎国[1] 柯永斌[1] 范曹龚[1] 

机构地区：[1]淮阴工学院电子与电气工程学院,江苏淮安223003

出　　处：《电子技术应用》2012年第1期31-33,37,共4页Application of Electronic Technique

基　　金：江苏省高校自然科学基金资助项目(08KJA460001);淮安市科技项目(SN1045)

摘　　要：介绍了一种用于身份识别的心音信号采集和处理系统。该系统利用STC12C5A单片机作为核心控制器,通过自带的A/D对经过放大、滤波等预处理后的心音信号进行模数转换,然后通过RS232总线将信号传输到上位机进行处理,在上位机利用LabVIEW设计一套集数据采集、存储、回放和分析于一体的虚拟检测平台。实验结果表明,利用该系统采集三位被测试者60组心音信号,建立WPT+GA-SVM心音身份识别模型,其识别准确率达到了85%。This paper introduces a design process of the heart sound signal detecting system based on microprocessor for iden- tity recognition. The acquisition system of heart sound signal is designed by MCU of STC12C5A. The hardware device can acquire and store data,and communicate with PC using RS232 interface. The virtual heart sound signal processing system is designed in PC based on vitual instrument software LabVIEW,includes the acquisition,storage and processing of signal,which adopts the approach of multi-panel and the idea of modular design.The test results show that the recognition rates of three conners and 60 heart sounds reached 85% based on WPT＋GA-SVM classification model.

关 键 词：心音信号 STC单片机 LABVIEW 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]