基于DSP的心电信号检测系统  

Electro-cadiogram signals detector system based on DSP

作　　者：陈鎏[1] 张海南[1] 王登科[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《电子测量技术》2007年第8期99-102,共4页Electronic Measurement Technology

摘　　要：心电信号的检测是研究心电病理特征的前提,是心电信号分析仪的重要组成部分。本文介绍了一种基于DSP的心电信号采集和分析系统。根据心电信号的特点,本系统采用AgCl电极作为心电信号传感器,结合AD620为主的前置放大电路进行模拟信号的采集。以TMS320VC5509低功耗DSP和CPLD为主进行数字系统设计。在DSP中编程实现数字滤波器的设计,最终得到P、T和QRS复波特征明显的ECG。本系统功耗小,成本低,精度高,达到了医疗仪器的设计要求。The detection of ECG is the precondition in studying ECG, the instrument used in detection of ECG is the most important part in the ECG apparatus. This paper presents an Acquisition and Analysis System for ECG based on Digital Signal Processor （DSP）. This system uses AgCL electrodes as the sensor, and acquires signal by the preamplifier circuit with AD620 as the main amplifier. This system TMSVC5509 DSP and complex programming logic device implement control have been adopted as digital signal processing unit, and the design of digital filter is fulfilled by DSP. Finally,the system gets the perfect ECG having good shapes in P, T, QRS waves. Furthermore, the system can work steadily with lower price, smaller volume and lower power, which has reached the demand in medical apparatus.

关 键 词：心电信号 数据采集 数字信号处理器 可编程逻辑器件 

分 类 号：TH77[机械工程—仪器科学与技术]