心脏病是威胁人类健康的主要疾病，心电图是诊断心脏疾病的重要工具。针对传统心电测量设备的不足，设计了一种非接触心电测量系统，基于耦合电容原理设计了一种非接触电极，电极通过电容耦合方式采集心电信号并经过放大、右腿驱动、滤波处理后由单片机完成A/D转换，由蓝牙模块将心电数据发送到手机终端进行数据分析及显示，同时终端可将测量结果发送到服务器，供使用者或医生进行健康监测。测量结果表明，利用非接触电极可精确采集心电信号，并在终端进行心电关键参数提取。%Heart disease is the major disease that threaten human health. ECG is an important tool for the diagnosis of cardiac disease. As traditional ECG measurement devices have many disadvantages, a non-contact ECG measurement system was designed. With the non-contact electrode based on capacitive coupling, the signals were col ected and then they were amplified and filtered. The conditioned analog signal was converted to digital data which was sent to the mobile terminal through bluetooth. Final y, the ECG data was analyzed to extract the key ECG parameters. The results showed that the precise ECG signals can be got with the non-contact electrode and the key ECG parameters can be acquired accurately.
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