A wireless reflectance pulse oximeter with digital baseline control for unfiltered photoplethysmograms

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dc.contributor.author Li, Kejia
dc.contributor.author Warren, Steven
dc.date.accessioned 2012-07-20T16:11:13Z
dc.date.available 2012-07-20T16:11:13Z
dc.date.issued 2012-07-20
dc.identifier.uri http://hdl.handle.net/2097/14054
dc.description.abstract Pulse oximeters are central to the move toward wearable health monitoring devices and medical electronics either hosted by, e.g., smart phones or physically embedded in their design. This paper presents a small, low-cost pulse oximeter design appropriate for wearable and surface-based applications that also produces quality, unfiltered photo-plethysmograms (PPGs) ideal for emerging diagnostic algorithms. The design's “filter-free” embodiment, which employs only digital baseline subtraction as a signal compensation mechanism, distinguishes it from conventional pulse oximeters that incorporate filters for signal extraction and noise reduction. This results in high-fidelity PPGs with thousands of peak-to-peak digitization levels that are sampled at 240 Hz to avoid noise aliasing. Electronic feedback controls make these PPGs more resilient in the face of environmental changes (e.g., the device can operate in full room light), and data stream in real time across either a ZigBee wireless link or a wired USB connection to a host. On-board flash memory is available for store-and-forward applications. This sensor has demonstrated an ability to gather high-integrity data at fingertip, wrist, earlobe, palm, and temple locations from a group of 48 subjects (20 to 64 years old). en_US
dc.relation.uri http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6069825&contentType=J ournals+%26+Magazines&sortType%3Dasc_p_Sequence%26filter%3DAND%28p_IS_ Number%3A6204125%29 en_US
dc.subject Filter-free en_US
dc.subject High-fidelity photoplethysmogram en_US
dc.subject Low cost en_US
dc.subject Pulse oximeter en_US
dc.subject Reflectance sensor en_US
dc.subject Surface biosensor en_US
dc.subject Wearable en_US
dc.subject Wireless en_US
dc.title A wireless reflectance pulse oximeter with digital baseline control for unfiltered photoplethysmograms en_US
dc.type Article (author version) en_US
dc.date.published 2012 en_US
dc.citation.doi doi:10.1109/TBCAS.2011.2167717 en_US
dc.citation.epage 278 en_US
dc.citation.issue 3 en_US
dc.citation.jtitle IEEE Transactions on Biomedical Circuits and Systems en_US
dc.citation.spage 269 en_US
dc.citation.volume 6 en_US
dc.contributor.authoreid swarren en_US
dc.contributor.authoreid kejiali en_US

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