Embedded data logging platform for research in diving physiology

The present paper describes the development of an embedded data logging platform for research in diving physiology. It records oxygen saturation and other physiological parameters like heart rate and electrocardiography, plus physical parameters like water temperature and water pressure in real-time. All measured data is stored on SD-card in text files. Thus easy processing with standard programs like MatLab or LabVIEW is assured. The housing is waterproof and pressure resistant to more than 20 bar (breath-hold divers have already passed the 200 m mark). It is small, lightweight, power aware and easy to use. Moreover with a standard 1 GB SD-card the minimum recording capacity is more than 72 hours.