摘要
文章介绍了一种基于人体脉搏信号特征的数字化人体模型心率检测仪的设计.该仪器采用反射式红外传感器获取脉搏信号,以uPSD3234单片机为主控芯片,对红外信号进行A/D转换,采样数据经低通滤波,数字微分后,选择适于脉搏微分波形的模板进行匹配滤波处理,实现了对脉搏波的检测,并使用了一种中值算法来提取有效的脉搏时间间隔,从而获得精确的心率值.实验表明:检测仪的设计和数据处理方法是可行的.
This paper introduces the design of a digitizing heart-rate measuring instrument based on the character of the pulse signal of human body.In this instrument,the reflectance IR sensor is applied to collect the pulse signals;uPSD3234 is used as central control unit,and converts the infrared signals from analog to digital.After low-pass filter and digital differentiation,the template adapted to the differential pulse waveform is applied for the matched filter,thus the pulse signal is detected.And then a median algorithm is used to extract the valid heart beat intervals.Thereby,an accurate beat rate is found.The experiment shows that the method of data processing is effective and the system is feasible.
出处
《南华大学学报（自然科学版）》
2010年第3期22-26,共5页
Journal of University of South China：Science and Technology
基金
湖南省衡阳市科技局基金资助项目(06KJ06)
