摘要
为了提高学生嵌入式系统的软硬件设计能力,设计基于毫米波雷达的非接触式生命体征信号测量实验。一方面,基于调频连续波(FMCW)雷达机制,采用MATLAB进行生命体征信号建模及呼吸率与心率时频信号提取的仿真实验;另一方面,采用60 GHz毫米波雷达模块,基于STM32单片机进行系统电路设计、PCB设计与实物制作,完成参试者呼吸率及心率的数据采集与OLED显示。上位机采用Qt Creator进行软件界面与功能设计,通过蓝牙模块与单片机进行无线数据通信,以30 s为周期执行呼吸率和心率数据的读取与显示。最后,搭建测试环境,对系统功能进行验证及其设计指标的测试与评估。该实验项目与生活实际紧密相关,注重理论与实践相结合,在系统整体设计与跨平台设计中培养学生的综合实践能力与协作能力。
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 FMCW 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.
作者
阎世梁
王银玲
王敏
熊亮
路丹丹
何春梅
YAN Shiliang;WANG Yinling;WANG Min;XIONG Liang;LU Dandan;HE Chunmei(National Demonstration Center for Experimental Engineering Training Education,Southwest University of Science and Technology,Mianyang 621010,Sichuan China;School of Information Engineering,Southwest University of Science and Technology,Mianyang 621010,Sichuan China)
出处
《实验室研究与探索》
CAS
北大核心
2024年第5期122-128,174,共8页
Research and Exploration In Laboratory
基金
四川省高等教育人才培养质量和教学改革项目(JG2021-893)
中国电子劳动学会2003年度“产教融合,校企合作”教育改革发展课题(cea12023004)。
关键词
毫米波雷达
单片机
生命体征检测
实验教学
millimeter wave radar
microcontroller unit(MCU)
vital signs detection
experiment teaching
