【摘要】 根据人体血液中氧合和还原血红蛋白不同的吸光特性,采用非损伤的光电体积描记技术,用红光和红外光两种不同波长的光源,实现血氧饱和度生理参数的实时检测.系统设计的硬件包括指夹式的光电传感器、单片机控制与信号处理电路、输出显示和接口电路等.软件包括相应的数据采集、处理和计算的主程序和中断程序.因采用了单片机系统和相应的软件程序,将自动完成数据检测、分析处理、显示和存储过程,可进行实时监测,以捕获难检的突发信号.更多还原

【Abstract】 According to the different ability of hemoglobin and oxyhemoglobin of blood to absorb red and infra-red light,SpO2 was measured by detecting the photoplethysmography signal of red and infra-red light through finger.The measuring system includes the hardware of photoplethysmography probe,microprogrammed control and signal processing block,output unit and its ports,and the software of main program and timer interrupt program.It can detect,process,display and save data automatically.And moreover it can work in real time.So it will realize the capture of subnormal SpO2 signals that appears suddenly and irregularly.更多还原