Extracting breathing rate information from a wearable reflectance pulse oximeter sensor

The integration of multiple vital physiological measurements could help combat medics and field commanders to better predict a soldier´s health condition and enhance their ability to perform remote triage procedures. In this paper we demonstrate the feasibility of extracting accurate breathing rate information from a photoplethysmographic signal that was recorded by a reflectance pulse oximeter sensor mounted on the forehead and subsequently processed by a simple time domain filtering and frequency domain Fourier analysis.