基于鉴相器的手机瞬时心率监测软件设计

doi:10.12068/j.issn.1005-3026.2016.02.006

东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (2): 174-178.DOI: 10.12068/j.issn.1005-3026.2016.02.006

基于鉴相器的手机瞬时心率监测软件设计

李晗，赵海，陈星池，李大舟

(东北大学计算机科学与工程学院，辽宁沈阳110819)

收稿日期:2014-12-11 修回日期:2014-12-11 出版日期:2016-02-15 发布日期:2016-02-18
通讯作者: 李晗
作者简介:李晗(1984-)，男，辽宁锦州人，东北大学博士研究生；赵海(1959-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
中央高校基本科研业务费专项资金资助项目(N100304002).

Software Design of Instantaneous Heart Rate Detection Based on Phase Demodulator for Smart Phones

LI Han， ZHAO Hai， CHEN Xing-chi， LI Da-zhou

School of Computer Science & Engineering， Northeastern University， Shenyang 110819， China.

Received:2014-12-11 Revised:2014-12-11 Online:2016-02-15 Published:2016-02-18
Contact: LI Han
About author:-
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摘要/Abstract

摘要： 目前用手机摄像头监测心率的手机软件无法检测瞬时心率，因为手机上资源有限，而占用资源较少的主要检测方法差分阈值法需要根据一段时间的结果来设定阈值才能准确检测出心率，不适于瞬时心率的检测.针对以上问题提出了一种基于鉴相器的瞬时心率检测算法，通过手机摄像头检测出的脉搏波信号先与正弦参考信号相乘，再经过低通滤波器提取心率成分，根据相位的变化逐拍检测心率的变化.在Android智能手机上的实验结果表明，与ECG方法相比，计算精度能满足要求.与差分阈值法和滤波器组法相比，本文提出的方法能较快地检测出瞬时心率.

关键词: 脉搏波监测, 摄像头, 安卓智能手机, 瞬时心率, 鉴相器

Abstract: Rarely software in the smart phone market can detect instantaneous heart rate quickly and precisely， because a threshold calculated based on a period of measurement is always necessary when using a derivative based algorithm. A phase demodulator based method was proposed to improve the performance of Android software. The pulse wave detected by cell phone camera was multiplied by a sine wave reference signal and then processed by a low pass filter to extract phase. The phase could be used to calculate the frequency beat to beat. Experimental results on an Android smart phone indicated that there was no obvious difference of instantaneous heart rate between the new method and the ECG method. Compared with derivative based and filter bank based algorithms， less phone resources was needed for the new algorithm and instantaneous heart rate could be obtained more quickly.

Key words: pulse wave detect；camera；Android smart phone, instantaneous heart rate, phase demodulator

中图分类号:

TP399

李晗，赵海，陈星池，李大舟. 基于鉴相器的手机瞬时心率监测软件设计[J]. 东北大学学报:自然科学版, 2016, 37(2): 174-178.

LI Han， ZHAO Hai， CHEN Xing-chi， LI Da-zhou. Software Design of Instantaneous Heart Rate Detection Based on Phase Demodulator for Smart Phones[J]. Journal of Northeastern University Natural Science, 2016, 37(2): 174-178.

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基于鉴相器的手机瞬时心率监测软件设计

Software Design of Instantaneous Heart Rate Detection Based on Phase Demodulator for Smart Phones

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