Design Of Health Monitoring System Based On STM32

Nowadays, more and more people pay attention to health problems. Health monitoring system has come into human's sight. There are ECG, pulse oximetry and body temperature as the basic physiological parameters to evaluate their own health, and the changes of these data can reflect health status of human at any time. The human physiological parameters are transmitted to the PC interface by wireless mode in this article, which reflects the health condition of the human body directly.This paper conducts the research on physiological parameters of human body, and the physiological parameters were collected including ECG, pulse oximetry and body temperature. A kind of human health monitoring system has been designed by selecting low power sensors based on modular thought. The system is composed of physiological parameter detection, central signal processing, wireless data transmission and PC interface, which completes the target of monitoring human health, such as drawing ECG, displaying pulse oximetry and temperature.In this system, STM32F103ZET6 is selected as the central processing unit. ADS1293 chip is selected by ECG signal acquisition module.The datas of ECG are acquired through a SPI serial peripheral interface, which are processed to draw ECG. The signal of pulse oximetry is detected by oxygen probe, and digital signals are extracted by controller via serial port. The MLX90615 is used to acquire temperature data by the temperature signal acquisition module, and read through SMBus(System Management Bus) by main control center. The Wi Fi wireless communication technology is adopted by wireless module. The chip HLK-RM04 is selected by wireless module. The wireless data transmission module is communicated with the central processing unit through the serial. Through the built-in network communication protocol, the data processed by the central processing unit is transmitted to the host computer for displaying with wireless style.The system realizes the collection of the human physiological parameters through the sensor. And the host computer interface is accomplished by network programming. The data processed by main control center is transmitted to the host computer interface in wireless. With the debugging and testing of system, the paper has verified the reliability and stability of the system, and achieved the desired requirements.