Abstract:
The aim of the project was to design a signal acquisition and
processing system for diagnosis of cardiac malfunctioning. The
electrocardiograph (ECG) machine currently being used
employs conducting gel and contact electrodes and gives out
fused output. This project gives independent outputs
corresponding to each sensor data and makes use of
sophisticated signal processing tools. As the oxygen is pumped
into the blood, the colour of blood changes from blue to red.
Light is passed through the blood and then detected on the
other side by the receiver. The received light indicates the
change in intensity of the signal, which in turn reflects heartbeat.
Received signal from receiver was amplified, filtered and then
passed to the computer via analog to digital converter. Matlab
was used to process the signal and a ‘C’ program is used to
receive signal from computer port. The required information
about signal was to be displayed on to computer screen, which
was printable as well.
