现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2013年
7期
57-59
,共3页
白鹏飞%王利%易子川%周震
白鵬飛%王利%易子川%週震
백붕비%왕리%역자천%주진
心电图(ECG)%T波%小波包变换%频带
心電圖(ECG)%T波%小波包變換%頻帶
심전도(ECG)%T파%소파포변환%빈대
electrocardiogram(ECG)%T wave%wavelet packet transformation%frequency band
心电图T波的变化可以反映多种心脏疾病,因此心电图T波的精确检测具有一定的医疗价值.提出了一种基于小波包变换的心电图T波提取算法,为针对心电图T波的医疗检测及其在便携式医疗系统中的应用提供了重要依据.首先,从心电图的频域出发,引入多层小波包变换提取了心电图T波的主频带波形;然后,根据T波主频带波形的特征确定了T波在时域中的始末位置,进而在心电图的时域波形中精确地提取了T波.
心電圖T波的變化可以反映多種心髒疾病,因此心電圖T波的精確檢測具有一定的醫療價值.提齣瞭一種基于小波包變換的心電圖T波提取算法,為針對心電圖T波的醫療檢測及其在便攜式醫療繫統中的應用提供瞭重要依據.首先,從心電圖的頻域齣髮,引入多層小波包變換提取瞭心電圖T波的主頻帶波形;然後,根據T波主頻帶波形的特徵確定瞭T波在時域中的始末位置,進而在心電圖的時域波形中精確地提取瞭T波.
심전도T파적변화가이반영다충심장질병,인차심전도T파적정학검측구유일정적의료개치.제출료일충기우소파포변환적심전도T파제취산법,위침대심전도T파적의료검측급기재편휴식의료계통중적응용제공료중요의거.수선,종심전도적빈역출발,인입다층소파포변환제취료심전도T파적주빈대파형;연후,근거T파주빈대파형적특정학정료T파재시역중적시말위치,진이재심전도적시역파형중정학지제취료T파.
The transformation of ECG T wave reflects various of heart diseases. Therefore,the accurate detection of T wave has certain medical value. A T wave extraction algorithm based on wavelet packet transform is proposed in this paper,which provided an important basis for the application of the electrocardiogram T wave in medical detection and portable medical sys?tems. Beginning with electrocardiogram frequency domain,the paper introduced the multi?layer wavelet packets transformation to extract the basic frequency band waveform of T wave. Secondly,the start point and the end point of T wave in time domain are determined according to the basic frequency band waveform characteristics,and then the T wave could be extracted accurately in the ECG.
