1. A Mobile Wireless Electrocardiogram System for Health Care Facilities John Farner Jason Fritts Julian Jaeger Joe Richard Georgia Institute of Technology School of Electrical and Computer Engineering

2. Project Overview A mobile wireless EKG system that will measure and store heart rhythm data, allow patients freedom of movement, and communicate with a central base station

3. Mobile Wireless EKG System

4. Two Stage Implementation

5. Stage 1: Front End Circuitry

6. Stage 2: EKG Data Acquisition http://f.ipc2u.ru/files/products/34462/ebox2300.jpg http://img.alibaba.com/photo/11730506/Audio_Extension_Cable.jpg PCB connects to eBOX through mic Original design used Phidgets at 65 Hz Sound card gives up to 44.1 kHz

7. Mobile System Software Records 5 sec. heart signal to.WAV file on eBOX Picture of batch file Converts.WAV data to.TXT file containing (x,y) pair Transfers heart signal WAV and (x,y) pair TXT files to base station PC using WindowsCE filesharing Deletes current heart data from eBOX Restarts program for another heart sample

8. Base Station GUI

9. Beats per Minute Measures period of heartbeat Finds average period

10. Design Modifications ChangesReasoning ADC Analog signal read by eBOX sound card Orginal design used phidgets interface board Needed higher sampling rate Amplifier1000 to 831 gain Needed 1 Vp-p for microphone input

11. Technical Specifications ProposedActual Range38 meters45 meters Battery life1.25 hours3.5 hours Weight1.3 kg1.5 kg Size150X115X80 mm 241X161X76 mm Resolution65 Hz22050 Hz

12. Timeline ExpectedActual Integration of Two Stages October 12November 19 Complete Wi-Fi data transmission October 26November 2 Final Computer Interface Software November 7October 19 Packaging November 26November 28 Testing and Tweaking November 30November 26 Final Presentation December 5

13. Marketing and Cost Customers  Hospitals  Nursing and Retirement Homes  Assisted Living Care Centers Cost Analysis:  Selling Price: $650  Profit (for 10,000 units): $963,114

14. Future Work Battery Life Optimized Packaging Streaming Measurements Alarms PDA and GPS support

15. Results Reliable EKG Recording Wireless Transfer Simple GUI Demonstration Video