Abstract

In this paper, we present a low-cost system for heart rate measurements. The device is easily usable without medical knowledge or training, and it works without prior calibration. The sensor mainly targets for health monitoring people in rural areas of emerging countries, who do not have easy access to medical examinations. While there are already many devices on the market that can perform heart rate and blood pressure measurements, the focus of the presented work is on reducing the cost while maintaining sufficient accuracy and providing online access to the measured data for medical personnel. The presented prototype uses commercial PPG sensors and can measure heart rates between 30bpm and 200bpm with an absolute accuracy of ±10bpm. The total cost of the prototype is below 30USD.

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