Heart rate measurement from wearable Photoplethysmographic sensor using Spot and tracking methods

In this paper we try to explore the concepts of Heart Rate Measurement using Photoplethysmographic (PPG) optical sensor. There is a vast array of processing algorithms that can be applied to the raw PPG signal to get the Heart Rate (HR). But in most of the cases these signals are corrupted by motion which makes it very difficult to extract the actual HR. In this paper we find out how HR can be obtained in Real-Time for Spot HR measurement and then move on to Motion HR. While doing this we also try to use as less resources as possible in Spot HR measurement. For Spot HR measurement we have taken measurement from a PPG sensor while sitting steady for short intervals since for Spot Measurement we need the signal only up to a good quality. For Motion HR estimation we have generated test data from subjects wearing the sensor and doing mild exercises. During the experiments we obtained a success rate of around 98% with our test data.