A Heart Rate Estimator for Portable Pulse Oximetry Based Heart Rate Monitoring System

Abstract

An efficient heart rate estimation algorithm implementing an ultra-low power digital signal processing for heart rate monitoring applications using an oximetry-based sensing technique is presented. The system processes the light to digital converter output in order to reduce the impact of various noise sources and accurately detect the heart rate information. The system supports heart rate frequencies in the range from 30 to 300 beats per minute. The proposed system is implemented using digital technology that is more robust than analog technology in the presence of noise, process, temperature, and supply voltage variations. The proposed system is designed to be low power and to operate at 0.5V supply voltage. The talk will present the overall architecture of the proposed heart rate estimation algorithm and the details of the key circuit blocks implementations using TSMC 180nm technology. Simulation results will be presented to verify the system operation and performance.

Date of Award	Dec 2012
Original language	American English
Supervisor	Michael Perrott (Supervisor)