心电信号调理电路研究与实现
|
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 a2nd-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.
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 a2nd-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.
引文
[1]刘大生,颜国正.一种采用单电源的心电信号遥测系统的设计[J].电子测量技术,2012,35(8):107-111.
[2]杨琦.基于MSP430超低功耗MCU的便携式心电监护仪及其系统的研究[D].福州:福州大学,2003.
[3]郭艳卫,谢建华,刘海波.单电源心电图前置放大器的设计[J].吉林大学学报:信息科学版,2011,29(2):116-120.
[4]雷文礼,张鑫,任新成.基于WiFi的无线医疗监护仪的研究[J].电子测量技术,2013,36(11):115-118.
[5]范晶彦.传感器与检测技术应用[M].北京:机械工业出版社,2005.
[6]周平,汪丰,刘梦星.非接触式心电测量的噪声抑制研究[J].仪器仪表学报.2013,34(10):2226-2230.
[7]赵建文,侯媛彬.信号距离度模型及其波形复杂信号辨识[J].电子测量与仪器学报,2013,27(6):485-491.
[8]余学飞.医学电子仪器原理与设计[M].广州:华南理工大学出版社,2000.
[9]邓亲恺.现代医学仪器设计原理[M].北京:科学出版社,2004.
[10]刘严.基于LabVIEW匹配滤波器最佳接收机的仿真[J].国外电子测量技术,2013,32(5):72-75.
[2]杨琦.基于MSP430超低功耗MCU的便携式心电监护仪及其系统的研究[D].福州:福州大学,2003.
[3]郭艳卫,谢建华,刘海波.单电源心电图前置放大器的设计[J].吉林大学学报:信息科学版,2011,29(2):116-120.
[4]雷文礼,张鑫,任新成.基于WiFi的无线医疗监护仪的研究[J].电子测量技术,2013,36(11):115-118.
[5]范晶彦.传感器与检测技术应用[M].北京:机械工业出版社,2005.
[6]周平,汪丰,刘梦星.非接触式心电测量的噪声抑制研究[J].仪器仪表学报.2013,34(10):2226-2230.
[7]赵建文,侯媛彬.信号距离度模型及其波形复杂信号辨识[J].电子测量与仪器学报,2013,27(6):485-491.
[8]余学飞.医学电子仪器原理与设计[M].广州:华南理工大学出版社,2000.
[9]邓亲恺.现代医学仪器设计原理[M].北京:科学出版社,2004.
[10]刘严.基于LabVIEW匹配滤波器最佳接收机的仿真[J].国外电子测量技术,2013,32(5):72-75.