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氧是维护生命的基础,血氧饱和度是人体极为重要的生理参数.血氧饱和度的测量在临床和日常保健中有重大意义.系统是以PIC18C252单片机为核心控制的测量仪,在硬件上实现了使用光传感器采集红光和红外光透过动脉血管后产生的信号电路以及相关的测量电路,实现了与PC机的通信;在软件上实现了以PIC18C252单片机为核心的控制程序,实现了数字信号处理算法和计算人体脉率和血氧饱和度(SaO2)的复杂算法,有效地克服了测量信号的漂移和噪声干扰,从而满足临床生理监护的需要.
Oxygen is the basis of life, oxygen saturation is a very important physiological parameters of the human body .SO2 measurement is of great significance in clinical and routine care. The system is based on PIC18C252 microcontroller as the core control of the measuring instrument, on the hardware Realize the use of optical sensors to capture red and infrared light through the arterial blood vessels generated after the signal circuit and the associated measurement circuit, and the PC to achieve the communication; software to achieve PIC18C252 microcontroller as the core of the control program to achieve Digital signal processing algorithm and calculation of human pulse rate and oxygen saturation (SaO2) complex algorithm to effectively overcome the measurement signal drift and noise interference to meet the needs of clinical physiological monitoring.