Pulse Oximeter Improvement with an ADC-DAC Feedback Loop and a Radial Reflectance Sensor
- 1 August 2006
- conference paper
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
- Vol. 2006 (1557170X), 815-818
- https://doi.org/10.1109/iembs.2006.259501
Abstract
Pulse oximeter circuitry must meet several design constraints, including the ability to separate a small pulsatile signal component from a large signal baseline. This paper describes pulse oximeter design changes that produced order-of-magnitude improvements in signal quality. The primary changes were (a) the replacement of an analog sample-and-hold-based differentiator circuit with an ADC-DAC feedback loop and (b) the replacement of a side-by-side reflectance sensor design with a radial sensor arrangement that maximizes the pulsatile-to-baseline signal ratioKeywords
This publication has 2 references indexed in Scilit:
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