Wireless ECG System
by Mathew David Melnyk and Joshua Marc Silbermann
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)
