1. Brief description of design
Physiological signal acquisition system designed based on STM32
1.1 Project background
As people's awareness of health increases, more and more people begin to pay attention to their body indicators, such as blood oxygen, heart rate, etc. At the same time, with the development of electronic technology, microcontrollers have been widely used in various fields. Therefore, the physiological signal acquisition system based on microcontroller came into being. Currently, the STM32F103RCT6 microcontroller is used to process physiological signals through the MAX30102 sensor, and the DS18B20 sensor is used to collect human body temperature, and the final results are displayed on the LCD display. When body temperature and heart rate exceed fixed values, the buzzer will sound an alarm.
1.2 Design requirements
This article designs a physiological signal acquisition system based on a microcontroller. It uses the STM32F103RCT6 microcontroller as the main control chip, processes the physiological signals (blood oxygen, heart rate) through the MAX30102 sensor, and uses the DS18B20 sensor to collect human body temperature, and displays the final results on the LCD. on the display. When body temperature and heart rate exceed fixed values, the buzzer will sound an alarm. The system has the characteristics of low power consumption and high stability, and has broad application prospects in the biomedical field.
System structure design
The hardware platform of this system mainly consists of STM32F103RCT6 microcontroller, MAX30102 sensor, DS18B20 sensor, LCD display and buzzer. Among them, STM32F103RCT6