摘要
目前的心电测量都需要在人体皮肤表面粘贴电极,这种测量方式不便用于日常生活中长时间的心电监测。利用耦合电容原理可以设计一种非接触心电测量方法,该方法通过测量电极与皮肤表面被测量部分形成的耦合电容来检测人体的心电信号,从而避免了粘贴电极,并在后续的心电信号处理过程中,针对本方法采集的心电信号易受干扰的特点,采用了一种自适应主成分分析(PCA)去噪算法。实验表明:这种非接触测量系统可以在不影响被测者正常活动的情况下实现对人体心电信号的长期监测。
At present,electrodes are always pasted on skin surface in ECG measurement,which causes inconvenience for long-time ECG monitoring.The principle of coupling capacity is applied to design a kind of non-contacted ECG measurement method,which detects ECG of human body by combining electrodes and the measured parts of skin to form coupled capacitance so as to measure ECG of human body,thus pasting electrodes is needless.Due to ECG signal collected by this method is susceptible to interference,a kind of adaptive principal component analysis（PCA） denoising algorithm is used in the subsequent ECG signal processing.Experiments show that this kind of non-contact measurement system can realize long-time ECG motoring without affecting people＇s normal activities.
出处
《传感器与微系统》
CSCD
北大核心
2013年第1期47-49,52,共4页
Transducer and Microsystem Technologies
关键词
心电图
信号处理
耦合电容
主成分分析
动态嵌入
ECG
signal processing
coupling capacitance
principal component analysis（PCA）
dynamical embedding（DE）
