To improve students'comprehensive practical ability in software and hardware design of embedded systems,a non-contact vital sign signals measurement experiment is designed using millimeter wave radar.On the one hand,based on FMC W radar mechanism,simulation experiments are conducted using MATLAB to model vital sign signals and extract time-frequency signals of respiratory rate and heart rate.On the other hand,the circuit design,PCB and material object of the system are carried out based on STM32 microcontroller with a 60 GHz millimeter wave radar module,and the data acquisition and OLED display of individual human respiratory rate and heart rate are completed.The host computer adopts Qt Creator to design the software interface and functions,and communicates with the MCU to read and display the respiratory rate and heart rate data in a 30 s cycle through the Bluetooth module.Finally,the system functions are verified and the design specifications are tested and evaluated under test environment.This experimental project focuses on the combination of theory and practice and closely relates to practical applications,and students'comprehensive ability of practice and collaboration are exercised and cultivated through the integrated design and cross platform design.
维普
万方数据