Wireless ECG System

by Mathew David Melnyk and Joshua Marc Silbermann

AVI of screen

Abstract: A wireless electrocardiogram system was designed for instructional purposes
in a Cornell undergraduate class in Neurobiology and Behavior. Using a series of filters,
amplifiers, and voltage-to-frequency conversion, a small voltage signal detected on a
human subject is transmitted to receiving circuitry using FM band frequencies. A
receiver unit uses frequency-to-voltage conversion that recovers the signal, which is
again conditioned so that it is of suitable amplitude. An Atmel Mega32 microcontroller
is used to create a scrolling oscilloscope out of a television screen. This television
oscilloscope accurately displays the received signal in an aesthetically pleasing manner.
In addition, by serially transferring the EKG data into MATLAB, several analysis tools
check the wave for basic characteristics. The goal of this project is to create a reliable,
safe, low-cost, low-power electrocardiogram system that will demonstrate a variety of
circuit techniques to undergraduate students.

Full Report in PDF format (You may need to download this and open it from the desktop)