Salt Lake City, Utah
June 23, 2018
June 23, 2018
July 27, 2018
First-Year Programs and Design in Engineering Education
In this paper, we present our progress in creating and implementing a four-semester design project to build a functional cardiograph that estimates heart rate (HR) and respiratory rate (RR). This set of project-based learning activities addresses industry’s complaint that students lack practical experience (“how devices are made”). The four project parts are: 1) creation of a personalized SolidWorks case and breadboarding of a bioamplifier circuit (connected to National Instruments my-DAQ data acquisition and a laptop running a LabVIEW executable); 2) C programming of a Texas Instruments microcontroller embedded system (replacing the breadboard, my-DAQ, and laptop) to acquire and display electrocardiogram (ECG) waveforms; 3) filter design to isolate ECG and respiration waveforms, with subsequent peak detection for estimating HR and RR; and 4) filter redesign using wavelet transforms to provide motion artifact resistant estimation of HR and RR. Although seemingly a biomedical engineering project, we administer this project to all our engineering students during their first, third, fifth, and sixth semesters, before they choose a specialization in biomedical, computer, or environmental engineering.
The learning outcomes, which are related to data acquisition, programming, filter design, and algorithm design, are discussed. Each learning outcome is assessed by the instructor using a rubric that describes each outcome. In addition to student performance, we also consider how this project may support student engagement and retention via students’ and instructors’ reflections, which are collected via journals, focus groups, and surveys.
Baura, G., & Kallemeyn, L., & Arroyo, N., & Chen, V. C., & Beale, A. (2018, June), Work in Progress: Building a Functional Cardiograph Over Four Semesters Paper presented at 2018 ASEE Annual Conference & Exposition , Salt Lake City, Utah. 10.18260/1-2--31272
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