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基于STC单片机和LabVIEW的心音信号检测系统_周红标.pdf

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DOI:10.16157/j.issn.0258-7998.2012.01.029 嵌入式技术 Embedded Technology 基于STC 单片机和LabVIEW 的心音信号检测系统* 周红标,蒋鼎国,柯永斌,范曹龚 (淮阴工学院 电子与电气工程学院,江苏 淮安 223003 ) 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 组心音信号,建立 60 WPT+GA-SVM 心音身份识别模型,其识别准确率达到了 85% 。 关键词: 心音信号;STC 单片机;LabVIEW 中图分类号: TP393 文献标识码: A 文章编号: 0258-7998(2012)01-0031-03 The heart sound signal detecting system based on STC microprocessor and LabVIEW Zhou Hongbiao ,Jiang Dingguo ,Ke Yongbin ,Fan Caogong (Faculty of Electronic and Electrical Engineering, Huaiyin Institute of Technology. ,Huaian 223003 ,China ) Abstract : 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. Key words : heart sound signal ;STC microprocessor ;LabV
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