Access Type

Open Access Thesis

Date of Award

January 2015

Degree Type


Degree Name



Electrical and Computer Engineering

First Advisor

Amar Basu


Continuous heart rate monitors (CHRM) can give unique insights into a person's physiological and psychological state; however, existing CHRMs are not suitable for continuous monitoring because they do not provide beat-to-beat accuracy and comfort needed for all-day use. Our group is currently developing a miniature earlobe mounted CHRM system which is both comfortable and provides beat-to-beat accuracy, based on a miniature heart rate sensing technology developed previously in our lab. The objective of this thesis is to design low power system firmware to perform key tasks: i) acquire heart rate and skin temperature data from wearable sensors; ii) signal process the raw heart rate data to calculate r-r interval; iii) optimize the heart rate sensor parameters for power and noise; iv) store the sensor data in local flash memory, and v) stream the data to an Android device. Each of the above functions was successfully implemented with low power considerations