摘要
为了能够实时监测人体的血氧饱和度情况,研制了一种基于STM32F103RET6单片机的无创血氧检测仪。依据近红外光谱理论,设计了血氧饱和度检测传感器,根据传感器的高阻抗等特性,设计了恒流源控制电路、信号调理电路及可变增益放大电路。以STM32F103RET6为控制核心,对血氧传感器测得的信号进行了实时的处理和分析,并通过串口将结果发送至上位机以图形跟数字的方式予以显示。该系统能够在无创情况下实时地对人体的血氧饱和度进行检测,具有快速、可靠、实用等特点。
To be able to real-time monitoring of human blood oxygen saturation, this paper developed a noninvasive pulse oximetry based on STM32F103RET6 microcontroller. The design of the oxygen saturation detecting sensor is based on the near infrared theory. The design of the constant current source control circuit, the signal conditioning circuit and the variable gain amplifier circuit are based on the high impedance of the sensor characteristics. As the control of STM32F103RET6, the signals of the oxygen sensor was measured by real-time processing and analysis, send the results to the upper computer on which uses the graphical and digital manner to show through the serial port. The system can detect the human＇s oxygen saturation on the non-invasive and real-time case with a fast, reliable, and practical feature.
出处
《信息技术》
2014年第9期189-192,共4页
Information Technology
