血氧信号采集与处理方法研究  

The Research of Acquisition and Processing Method for Blood Oxygen Signal

作　　者：苏都都[1] 刘立山[1] 刘军传[2] 

机构地区：[1]青岛农业大学机电工程学院,山东青岛266109 [2]北京航空航天大学机器人研究所

出　　处：《青岛农业大学学报（自然科学版）》2012年第2期132-135,共4页Journal of Qingdao Agricultural University(Natural Science)

摘　　要：详细分析了脉搏血氧检测中信号的前置放大和数据后处理中应注意的问题以及采取的措施,以STM32单片机为核心处理器,采用光的调制和解调技术。在硬件上,完成了低功耗、强抗干扰的血氧信号前置放大电路的设计;在软件上,完成了低通数字滤波器的设计,并把此前置放大电路和数据处理方法应用于脉搏血氧状态的测量,得到了连续、稳定的脉搏血氧信号。The problems needing and actions of pre-amplifier and data post processing for blood oxygen detection pulse signal are detailedly analyzed. Through STM32 as core processor, the technique of the modulated and demod- ulated light is used. In hardware, the design of pre-amplifier for low power and strong anti-interference is accom- plished;in software, the design of low-pass digital filter is accomplished, and the pre-amplifier and data post process- ing method are applied to measure the state of blood oxygen, can receive Continuous, stability of the pulse of the blood oxygen signal.

关 键 词：血氧信号 噪声 电流转电压 数字滤波 

分 类 号：TH772.2[机械工程—仪器科学与技术]