吉林大学学报(信息科学版)

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反射式血氧饱和度测量系统设计

许晓峰1, 历哲1, 凌振宝2   

  1. 1. 沈阳工程学院 电气工程系, 沈阳 110136; 2. 吉林大学 仪器科学与电气工程学院, 长春 130061
  • 收稿日期:2013-05-10 出版日期:2013-05-27 发布日期:2013-06-07
  • 作者简介:许晓峰(1960—), 男, 福建泉州人, 沈阳工程学院教授, 硕士生导师, 主要从事电气工程及其自动化研究, (Tel)86-15140164439(E-mail)XuXf258@126.com。
  • 基金资助:

    吉林省科技发展计划重点基金资助项目(20100350)

Design of Blood Oxygen Saturation Measure System-Based on Reflection Type

XU Xiao-feng1, LI Zhe1, LING Zhen-bao2   

  1. 1. Department of Electrical Engineering, Shenyang Institute of Engineering, Shenyang 110136, China; 2. College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, China
  • Received:2013-05-10 Online:2013-05-27 Published:2013-06-07

摘要:

针对透射式血氧饱和度测量仪存在携带不便的问题, 设计了反射式血氧饱和度测量系统。系统主要由传感单元、 信号分离及滤波单元、 数据采集和处理单元以及显示模块组成。传感单元主要由光电传感器组成, 用于将人体的生物信号转化成电信号。由于传感单元提取的红光和红外光信号混在一起, 并有其他干扰信号, 需进行信号分离和滤波; 处理后的信号经A/D转换器STC12C5A60S2采样转化为数字量, 利用单片机计算得到血氧饱和度值, 并通过1602液晶显示结果。实验表明, 系统测量精度在1%左右, 满足临床使用要求。

关键词: 血氧饱和度, 光电传感器, 反射式, 单片机

Abstract:

To improve the portability of the transmissive oxygen saturation measurement, a reflection type blood oxygen saturation test system is provided, including the sensor unit, signal separation and filtering unit, data acquisition and processing unit, and the display module. The sensing unit consists of a photoelectric sensor, which can transform the biological signal into electrical signal; the electrical signal is processed by the signal separation and filtering unit, which can extract the effective signal from the original signal; the processed signal is converted to digital signal after A/D converter, STC12C5A60S2, and the oxygen saturation value can be calculated through MCU (Micro Control Unit); the oxygen saturation result is displayed on the 1602 LCD (Liquid Crystal Display) screen. The experiment shows that the system can meet the clinical requirements with the measurements accuracy of ±1%.

Key words: blood oxygen saturation, photoelectric sensor, reflective, microcontroller

中图分类号: 

  • TH776