| 基于自动增益放大的便携式心电监护仪设计 |
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| 作者姓名： | 凌振宝 黄越 李肃义 |
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| 作者单位： | 吉林大学仪器科学与电气工程学院,吉林长春,130026 |
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| 摘 要： | 针对心电监护仪监测运动状态时易出现心电信号饱和现象,改进系统硬件电路,设计一种基于自动增益放大的便携式心电监护仪,选择合适前置放大及右腿驱动电路放大源信号,利用高通和低通滤波电路过滤信号噪声;加入以AD603芯片为核心的自动增益控制电路,通过调整放大倍数,自动调节采集心电信号幅值,避免出现饱和现象.实验结果表明,系统能够自动识别运动中的心电信号,并且失真度较小,能够为监测早期冠心病等心脏系统疾病提供准确结论.
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| 关 键 词： | 心电监测 自动增益 便携式 控制电路 信号 饱和 |
Design of potable ECG monitor based on automatic gain amplification |
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| Authors: | LING Zhenbao HUANG Yue LI Suyi |
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| Institution: | (Instrumentation and Electrical Engineering College of Jilin University,Changchun,Jilin 130026,China) |
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| Abstract: | In view of ECG signal was easy to appear the saturation while in the detection of movement ECG at present.We described a portable ECG monitor based on the automatic gain amplification.The system added the AGC circuit uses AD603 as the core.It can automatically adjust the amplitude of the ECG by regulating the magnification in order to avoid the appearance of saturation.The experiments showed that the system can identify ECG automatically in the movement and the distortion is relatively small.It laid the foundation for the early detection of coronary heart disease. |
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| Keywords: | ECG monitoring automatic gain potable control circuit signal saturation |
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