UWE Bristol Engineering showcase 2015

Kyriakos Eleftheriou
BEng Electronic Engineering
Project Supervisor
Dr. Nigel Gunton
Heart Rate Electronic Monitoring Device
Human’s heart pumps oxygenated blood from the arteries and receives ‘used’ blood from the veins. All the human organs and tissues
need oxygen and nutrients, and produce byproducts such as waste and carbon dioxide, which need to be removed from the body. The
heart of a human is a never ending working muscle that does that job. The rate or the speed that heart works, is known as ‘heart rate’
and is measured in Beats per Minute (BPM). Generally, one may consider this process-sending and receiving- blood as one counted in
units of beats per unit time.
Project summary
This is a project about developing
A heart rate Monitoring Device
With the use of an IR LED, OPT101
Amplifier and Photodiode
The idea of this sensor, is to develop one which can be similar to a proximity
sensor. Proximity sensors can detect the distance between the sensor and
the detected item. The proximity sensor is consisted of one led and one
photodiode. The LED sends a signal, and the photodiode detects that signal.
When that signal changes or disappears, the photodiode works like a resistor,
varying the voltage. That change in voltage is vital for the input detection.
Printed Circuit board was chosen to
be fabricated, due to the eye
pleasing effects, and the reduction
of space and errors as well. Double
sided PCB design was chosen as well
If that sensor is placed on a finger as is, nothing will happen. But, if the
signal is amplified, giving some gain to it, then the flow of the blood in the
fingers’ arteries may be detected.
Project Objectives
The aim of the project is to detect and
produce a device to real time track the heart
rate
Project Conclusion
A heart rate monitor has been implemented,
enabling the detection of heart rate and
plotting a real time graph with the
Detection of the number of Beats per
Minute.