【摘要】 根据小波变换的理论 ,信号的奇异点对应于其小波变换的一个正模极大值与负模极大值对。采用二次样条小波对心电认号进行小波分解 ,将心搏分为室上性心搏和室性心搏。根据Lipschitz指数的理论 ,提出小波变换各个尺度上的极大模值增大或Lipschitz指数大于零是确定室性QRS波的一个重要指标。使用这个指标 ,可正确的识别QRS波群宽度小于 12 0ms的室性QRS波。更多还原

【Abstract】 According to the theory of wavelet transformation,the singularities of the signal are corresponding to the series of maximum-minimum pairs.The algorithm using a quadratic spline mother wavelet to decompose the ECG signal.The beats are divided into the super ventricular beats and the ventricular beats.Based on the theory of Lipschitz index,the increase of maximum-minimum pairs at certain different scales or the positive of Lipschitz index is an important standard of recognition factor of ventricular QRS waves.By using this index,the ventricular beats which the duration of QRS is less than 120ms are recognized correctly.更多还原