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Implementation and validation of a power-efficient, high-speed modulation design for wireless oxygen saturation measurement systems

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3 Author(s)
P. Shaltis ; Dept. of Mech. Eng., MIT, Cambridge, MA, USA ; Sokwoo Rhee ; H. H. Asada

This paper describes the implementation and initial validation results of a novel power-efficient, high-speed modulation design for wearable oxygen saturation sensor systems. The research presented is in conjunction with the development of continuous photo plethysmographic health monitoring device known as the Ring Sensor. It is demonstrated that a high LED modulation rate coupled with a low duty cycle significantly reduce LED power consumption. Additionally, initial benchmarking results using a Nellcor N-395 pulse oximeter indicate good agreement with the new design for both heart rate and oxygen saturation measurements

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Bioengineering Conference, 2002. Proceedings of the IEEE 28th Annual Northeast

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