摘要
实现动态环境下血氧饱和度的实时连续检测,研制了一种基于透射式检测原理的血氧饱和度监测装置。采用透射式光频转换器采集人体光电容积脉搏波,低功耗处理芯片MSP430为主控芯片,获取的脉搏波信号经过程序处理之后,通过蓝牙模块无线发送到终端设备。在动态环境下脉搏波信号存在多种干扰,利用了脉搏波信号的上下包络线信息,采用邻值代替法去除奇异点,低通滤波去除高频干扰,形态学滤波去除基线漂移和运动伪差干扰。该装置具有成本低、功耗低、易操作等特点,实验结果表明:所得到的血氧饱和度具有较好精度,能够动态实时地监测。
In order to realize real-time continuous detection of oxygen saturation in a dynamic environment,and a blood oxygen saturation monitoring device based on the transmission-type detection principle is developed.Photoplethysmography is collected by transmissive optical frequency converter,low-power consumption microcontroller MSP430 is used as main controller chip,the obtained pulse wave signal is processed by program,and then sent to the terminal device through the Bluetooth module. There are several interference pulse wave signal in dynamic environment,use up and down envelope informations of pulse wave signal,adopts neighbor value substitution method to remove singularity point,use low-pass filtering to remove the high frequency interference,and the morphological filter to remove interference of the baseline drift and the motion artifacts The device has the characteristics of low cost,low power consumption and easy operation. Experimental results show that the obtained oxygen saturation has good precision and can dynamicly and real-time monitor.
作者
黎圣峰
庞宇
高小鹏
黄俊骁
LI Sheng-feng PANG Yu GAO Xiao-peng HUANG Jun-xiao(School of Opto Engineering, University of Posts and Telecommunications of Chongqing, Chongqing 400065, Chin)
出处
《传感器与微系统》
CSCD
2017年第3期110-112,119,共4页
Transducer and Microsystem Technologies
关键词
便携
脉搏波信号
血氧饱和度
极值
包络线
portable
pulse wave signal
oxygen saturation
extremum
envelope line
