Design of Portable Physiological Data Acquisition System Based on STM32.

The portable physiological data acquisition system based on STM32 obtains human physiological data by using photoplethysmography(PPG). It collects signals by using three different bands of light emitting diodes (LEDs) of optical sensor Max30105, where green light collects heart rate data, red light and the infrared obtain blood oxygen saturation data. Measurement results is displayed by organic light-emitting diode (OLED). Test and results analysis show that the operation of the system is stable and it can detect human heart rate and blood oxygen saturation accurately.