Objective To realize noninvasive measurement of blood oxygen saturation degree. Methods By changing the traditional method of optical detection and amplifying circuit discrete design, using OPT301 photoelectric integrated block, AT89C51 single chip and ADC0809 analog digital converter, we achieve acquisition and processing for 4 channels of photoelectric signal, and according to the detection principle of transmission blood oxygen saturation degree measurement with near infrared double wavelength, calculate the value by the formula of "SaO2=A+BR". Results The simulation test shows that this system achieves the function of blood oxygen saturation degree measurement. Conclusion Using integrated devices, we can optimize the structure of the blood oxygen saturation degree measurement system, and improve the anti-interference ability.%目的 实现血氧饱和度的无创检测.方法改变传统的光检测和放大电路分立设计的方法,采用OPT301光电集成块、AT89C51单片机和ADC0809模数转换器,实现对4路光电信号的采集处理,根据近红外双波长透射式脉搏血氧检测原理,由血氧饱和度经验公式 "sao2=A+BR"计算血氧饱和度值.结果实验仿真证明,系统实现了血氧饱和度的检测功能.结论采用集成器件可以优化血氧饱和度检测系统结构,提高抗干扰能力.
展开▼
