Portable blood oxygen detection device based on STM32

In order to realize the real-time portability monitoring of human blood oxygen, a portable low-power blood oxygen detection device was designed and studied. The device adopts STM32 microcontroller as the main control chip and data processing unit, AFE4950 blood oxygen sensing chip as the data acquisition chip, and controls the STM32 microcontroller through software programming design, so as to realize the functions of AFE4950 sensor, OLED display circuit, Bluetooth transmission circuit and USB debugging circuit, and real-time dynamic monitoring of human blood oxygen concentration. The design has good stability, low design cost and small size and easy to carry, providing a new idea for blood oxygen detection in the field of mobile medicine.