1. Wireless Electrocardiogram System Senior Project 2013-2014
Project Member: David Chadwick
Faculty Advisor: Dr. John LaCourse
ECE 791/792: Senior Project

2. General Overview Purpose of project Goals Design overview
Implementation timeline

3. Project Purpose
Develop a non-invasive ECG instrument to work wirelessly with mobile devices
Early detection of heart attacks and other anomalies
Monitor progress of physical therapy and recovery
Portability and ease-of-use

4. Goals Measure ECG signal response Signal response accuracy: 70%
Maximum signal delay: 2 seconds
Low power, leading to long-term use
Ease of use
Multiple platform performance

5. Design Overview

6. Design Overview fc = 146.7 Hz Av = 120 (gain stage)
Voltage sources (3.3V – 9V)
Battery life: >24 hours
Production cost: <$50.00

7. Filter Stage

8. Gain Stage

9. AC Frequency Analysis

10. Implementation Timeline
Stage 1: Fall 2013
Construct filter circuits, 1 board – by October
Construct filter circuits, 2 boards – by November
Minimize filter systems – by December
Increase efficiency – by December
Portable form factor – by January

11. Implementation Timeline
Stage 2: Spring 2014
Bluetooth connectivity – by February
Connect 2 boards to a 3rd wirelessly – by March
Prototype code for various platforms – by April
Final testing – by May

12. Expected Output Output = Left Wrist Circuit – Right Wrist Circuit
Working circuit by: February 2014
Mobile platforms working by: March 2014
Completion date: April 2014