ASEE 2012 Mid-Atlantic Workshop, Apr. 21, University of Delaware

ASEE Mid-Atlantic 2012
Contrasting Blood Pressure Measurement
Approaches in a Freshman Engineering Design
Project
Lunal Khuon, T. Camise, C. Bannan, Kevin Buckley
Department of Electrical and Computer Engineering
Villanova University
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ASEE Mid-Atlantic 2012
Presentation Outline:
• Overview of College multidisciplinary freshman project
course sequence
• Overview of automatic blood pressure measurement
approaches considered in this project
• Project objectives (& how they are addressed)
• Overview of the project course
• Lab descriptions
• Summary of student experience (& assessment)
Project Web Page: www.ece.villanova.edu/user/buckley/fresh proj
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ASEE Mid-Atlantic 2012
Multidisciplinary Freshman Project Course Sequence
Structure: Fall/Spring 3 credit courses
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ASEE Mid-Atlantic 2012
Contrasting Blood Pressure Measurement Approaches
• The Automatic Stethoscope Approach
• The Oscillometric Approach
• The Finger-Pulse Approach
DSP Chip
ARM processor
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ASEE Mid-Atlantic 2012
Mini-Project Objectives
1. exemplify engineering design/development process;
2. expose students to multidisciplinary aspects of engineering;
3. motivate students to continue their pursuit of an
engineering profession;
4. build an automatic blood pressure measurement devices while experiencing most aspects of the engineering design/development process.
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Structure: two 75 min. classes/wk; open Lab sessions
Class #
1
2
3
4
5,6
7
Type
Lecture
Lecture
Lecture
Lecture/
Lab 1
Lab 2
Lecture
8,9
Lab 3
10
Lecture
11-12
Lab 4a
13-14
Lab 4b
Topic
Introduction: motivation, blood pressure measurement
approaches, Profs. Buckley & Khuon (ECE)
Fluid dynamics & blood pressure, Prof. Bill Kelly (ChemE
Cardiovascular physiology, Prof. Phil Stephens (Bio)
Health Care & blood pressure; manual
blood pressure measurement, Prof. Teri Capriotti (Nur)
Blood pressure signal evaluation & signal processing
in Matlab (provided signals)
Sensors & Analog interface electronics
Prof. Lunal Khuon (ECE)
Sensors & Analog electronics: build filter to derive
oscillometric signal from cuff pressure signal
Digital processors & development systems
Prof. Kevin Buckley (ECE)
Acquiring blood pressure signals onto desktop,
evaluate and process in Matlab (as in Lab 2)
Acquiring blood pressure signals into digital processor,
process in real-time for blood pressure measurement
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ASEE Mid-Atlantic 2012
Lectures:
• Class 1: Introduction – box of parts
• Class 2: Fluid Dynamics – Prof. Bill Kelly, Chemical Engineering
• Class 3: Cardiovascular Physiology – Prof.
Biology
Phil Stephens,
• Class 4: Health Care – Prof. Teri Capriotti, Nursing
• Class 7: Analog Electronics – Prof. Lunal Khuon, ECE
• Class 10: Digital Electronics – Prof. Kevin Buckley, ECE
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ASEE Mid-Atlantic 2012
Lab #1: Manual Blood Pressure Mesurement – Class 4
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ASEE Mid-Atlantic 2012
Lab 2: Blood Pressure Signal Evaluation & Processing in Matlab
Classes 5 & 6
We provide signal files & Matlab programs
Issues: signal quality (noise and artifacts), demodulation, thresholding
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ASEE Mid-Atlantic 2012
Issues: calibration, robust heart beat pulse detection
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ASEE Mid-Atlantic 2012
Lab 3: Sensors & Analog Electronics – Classes 8 & 9
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ASEE Mid-Atlantic 2012
Lab 4: Three Student Development Teams
Lab 4a: Acquiring Blood Pressure Signals onto a Desktop
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ASEE Mid-Atlantic 2012
Lab 4b: Real-Time Blood Pressure Measurement w/ Digital Processors
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ASEE Mid-Atlantic 2012
Summary of Student Experience
• Assignment 1: brief description of a “scenario”
• Several surveys for assessment
• Several quizzes
• Lab Report Forms (& sign off pages)
• Final deliverables:
– Team Reports: 15 pages
– Team Posters & Presentations
– Team “Scenario” Videos
• Course And Teacher (CAT) Evaluations
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ASEE Mid-Atlantic 2012
Objective # 3: Motivating Students to Continue Pursuit of an
Engineering Profession
1) Cooperative learning in labs; active learning in lectures
2) Contrasting approaches for a relevant multidisciplinary application
3) “Scenario” video concept
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