摘要
心率变异性(HRV)是指逐次心跳周期差异的变化情况,它产生于自主神经系统对心脏窦房结的调制,是预测心脏性猝死和心律失常性事件的一个很有价值的指标。传统对HRV的分析多是基于心电信号,而心电信号的采集过程较为复杂,因此我们设计了一种基于光电容积脉搏波(PPG)描记法的HRV分析系统,PPG信号通过单片机从人体手指端采集,数据经过USB转串口模块发送给上位机,上位机软件将采集到的数据绘成波形图并将数据存储下来,以便日后HRV分析使用。该系统尺寸小、功耗低、操作简单,适用于家庭和医院的日常监护。
Heart rate variability（HRV）is the difference between the successive changes in the heartbeat cycle,and it is produced in the autonomic nervous system modulation of the sinus node of the heart.The HRV is a valuable indicator in predicting the sudden cardiac death and arrhythmic events.Traditional analysis of HRV is based on a multielectrocardiogram（ECG）,but the ECG signal acquisition is complex,so we have designed an HRV analysis system based on photoplethysmography（PPG）.PPG signal is collected by a microcontroller from human＇s finger,and it is sent to the terminal via USB-Serial module.The terminal software not only collects the data and plot waveforms,but also stores the data for future HRV analysis.The system is small in size,low in power consumption,and easy for operation.It is suitable for daily care no matter whether it is used at home or in a hospital.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2016年第1期14-17,共4页
Journal of Biomedical Engineering
基金
国家自然科学基金资助(61471075)
重庆高校创新团队建设计划(智慧医疗系统与核心技术创新团队)
关键词
心率变异性
心电图
光电容积脉搏波描记法
低功耗
heart rate variability
electrocardiogram
photoplethysmography
low power consumption
