CAJ | 학술논문

心音信号是一种复杂的生理信号，对心音信号产生机理的研究能够为心音听诊提供理论依据。文中从心血管循环系统的生理结构出发，讨论了心音的产生机理；然后，提出心音周期增量序列的多尺度化基本尺度熵和相关的评价指标；最后，利用本方法对健康人群和充血性心力衰竭患者进行分类分析。仿真实验表明，对心音周期增量序列进行多尺度化基本尺度熵分析，可以准确地区分健康人和心力衰竭人群。基于多尺度化基本尺度熵提出的诊断参数可以作为心衰早期诊断的一种依据。通过肩带式心音传感器首次实现了不用手持、长时间的心音采集，同时通过对长时间心音信号变化规律的研究，对于充分利用心音，挖掘听诊的潜力有着重要的意义。
심음신호시일충복잡적생리신호，대심음신호산생궤리적연구능구위심음은진제공이론의거。문중종심혈관순배계통적생리결구출발，토론료심음적산생궤리；연후，제출심음주기증량서렬적다척도화기본척도적화상관적평개지표；최후，이용본방법대건강인군화충혈성심력쇠갈환자진행분류분석。방진실험표명，대심음주기증량서렬진행다척도화기본척도적분석，가이준학지구분건강인화심력쇠갈인군。기우다척도화기본척도적제출적진단삼수가이작위심쇠조기진단적일충의거。통과견대식심음전감기수차실현료불용수지、장시간적심음채집，동시통과대장시간심음신호변화규률적연구，대우충분이용심음，알굴은진적잠력유착중요적의의。
Heart sound signal is a kind of complex physiological signals. The study on mechanism of heart sounds signal can provide theo-ry basis for heart sounds auscultation. In this paper,discuss the physical structure of cardiovascular circulation system and the generating mechanism of heart sounds. Then,propose multiscale base-scale entropy of heart sound cycle increment series and related evaluation in-dex. Finally,healthy people and patients with heart failure are diagnosed based on the proposed algorithm. Simulation experiments show that multiscale base-scale entropy of heart sound cycle increment series can accurately distinguish between healthy person and Congestive Heart Failure ( CHF) . The proposed diagnosis parameter based on multiscale base-scale entropy provides a new evidence for clinic of heart failure. Heart sounds can be collected for a long time without holding for the first time. The research on long heart sound signals is of great importance to make the best of heart sound and dig the great potential of heart sound.