心电信号调理电路研究与实现  

Research and implement of a ECG signal conditioning circuit

作　　者：孔令荣[1] 王昊[1] 庄涛[2] 

机构地区：[1]南京理工大学泰州科技学院电子电气工程学院,泰州225300 [2]南京理工大学电子工程与光电技术学院,南京210094

出　　处：《电子测量技术》2014年第10期130-134,共5页Electronic Measurement Technology

摘　　要：研究并设计一款心电信号调理电路系统,可以在滤除不必要噪声和干扰成分的同时又能保护其中的有用部分。调理电路包括前置仪表放大电路,含有Sallen-Key结构的二阶有源高通滤波器,二阶低通贝塞尔滤波器以及二阶双T陷波器。每种滤波器及其元件均采用模块化设计。数据采集和取样电路选用带内置A/D转换器的USB6009模块。在所设计的信号调理电路中可以输出真实的ECG信号,该电路具有成本低廉,便于携带,可以随时对其模块电路进行替换等特点,其波形性能可比商业设备。A ECG signal conditioning circuit system is researched and designed which can preserve useful information while removing unwanted noise and interference components. This conditioning circuit includes an instrumentation amplifier,an active 2nd-orderhigh-pass filter with Sallen-Key configuration,a 2nd order low-pass Bessel filter, and a 2nd order Twin-T notch filter. The order of these filters and the associated components in each filter have modular feature. Data acquisition and sampling were performed using a USB6009 module with a built-in A/D converter. Testing of a real electrocardiogram on the designed signal Conditioning circuit. The circuit has the advantages of low cost, easy to carry,the module circuit easy to replace etc. demonstrated comparable outputs to commercial devices.

关 键 词：心电信号 信号调理 高通滤波器 低通滤波器 陷波器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN911-34[自动化与计算机技术—控制科学与工程]