据统计,在运动场所因心脏疾病突发导致人员伤亡的事件数量正逐年增加。为了正确评估人体在运动过程中运动强度的大小,使运动强度与个人健康控制在一个合理的范围,本文基于小波包分解对人体心音和心电信号的处理技术,利用小波包多分辨分析的特点,提出了一种小波包分解频带能量商的新方法,旨在将归一化能量结合到小波包分解当中,利用频带能量商作为检测人体运动前后心音、心电信号的生理参数;文中还给出了一种人体运动强度检测仪的实现方案。经实验论证本文所述人体运动强度检测方法分类识别效果好,硬件设备操作简单可靠,检测标准可调性强,能够很好地评估人体运动强度的大小,可以尽量避免因“过量运动”而导致心脏疾病突发事件的发生,防患于未然。
According to statistics ,at sport fields ,heart disease outbreaks cause the number of events that lead to casualties to increase year by year. In order to evaluate the exercise intensity of human body in the exercise, and controls the exercise intensity and individual health in a reasonable range ,based on the wavelet packet decomposition processing technology for human heart sound and ECG signal ,using wavelet multi resolution analysis characteristic ,a new method of frequency band energy quotient of wavelet packet decomposition is put forward, which intends to couple the normalized energy into the wavelet packet decomposition ,and use the frequency band energy operators as the physiological parameters to detect the human heart sounds and ECG signals before and after human body exercise. This paper also gives the implementation scheme of a human body exercise strength detection instrument. The experiment results demonstrate that the proposed hu- man body exercise strength detection method has good classification and recognition effect,the hardware equipment opera- tion is simple and reliable,the detection criterion is adjustable; the method can be use to assess hmnan body exercise in- tensity nicely,and can avoid the heart disease outbreak events due to "overload exercise" ,nip in the bud.