Development of Heart Rate Monitoring Controller Using Fingertip Sensors Sai Namith Garapati, K. Venkatesh, Kushwanth Reddy, Sahithi Unkili, Deepak Prasad and Vijay Nath Abstract This research article is the illustration of design and verification of a fingertip sensor-based heart rate monitoring system. This device observed the flow of blood through the finger via optical sensor. It also shows the advantage of the portability over a tape-based recording system. Here, ECG signal is used to measure the heart rate with the help of Discrete Fourier Transformation (DFT), this is a novel feature of this setup. In this analysis we find the better accuracy in real signal even under intense physical phenomenon. In this research work signal of HRM device and ECG have been compared on oscilloscope and find the excellent results/output response. HRM device is very economical than the ECG and a friendly user interface. 1 Introduction The rate of heart beat is known as heart rate or beat per minute (bpm). A device which samples heartbeat signal and calculates the beat per minute is popularly called as heart rate monitor (HRM) device. Mainly electrical and optical methods are deployed for sampling of heart signals. A normal human’s heart rate is defined to be 72 bpm [1–3]. For removing the order of harmonics and noise from signal HRM devices are used. It also uses zero-crossing algorithms to count the number of beats in a fixed S. N. Garapati · K. Venkatesh · K. Reddy · S. Unkili · D. Prasad · V. Nath (B ) Department of ECE, VLSI Design Group, BIT Mesra, Ranchi 835215, JH, India e-mail: vijaynath@bitmesra.ac.in S. N. Garapati e-mail: gsainamith@gmail.com K. Venkatesh e-mail: kv25900@gmail.com K. Reddy e-mail: kushwanth2000@gmail.com S. Unkili e-mail: unkilisahithi@gmail.com © Springer Nature Singapore Pte Ltd. 2020 V. Nath and J. K. Mandal (eds.), Nanoelectronics, Circuits and Communication Systems, Lecture Notes in Electrical Engineering 642, https://doi.org/10.1007/978-981-15-2854-5_48 547