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Design and Evaluation of a Low-Cost Smartphone Pulse Oximeter
Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
* Author to whom correspondence should be addressed.
Received: 15 October 2013; in revised form: 16 November 2013 / Accepted: 2 December 2013 / Published: 6 December 2013
Abstract: Infectious diseases such as pneumonia take the lives of millions of children in low- and middle-income countries every year. Many of these deaths could be prevented with the availability of robust and low-cost diagnostic tools using integrated sensor technology. Pulse oximetry in particular, offers a unique non-invasive and specific test for an increase in the severity of many infectious diseases such as pneumonia. If pulse oximetry could be delivered on widely available mobile phones, it could become a compelling solution to global health challenges. Many lives could be saved if this technology was disseminated effectively in the affected regions of the world to rescue patients from the fatal consequences of these infectious diseases. We describe the implementation of such an oximeter that interfaces a conventional clinical oximeter finger sensor with a smartphone through the headset jack audio interface, and present a simulator-based systematic verification system to be used for automated validation of the sensor interface on different smartphones and media players. An excellent agreement was found between the simulator and the audio oximeter for both oxygen saturation and heart rate over a wide range of optical transmission levels on 4th and 5th generations of the iPod TouchTM and iPhoneTM devices.
Keywords: pulse oximetry; mHealth; telemonitoring; pneumonia diagnostics
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Petersen, C.L.; Chen, T.P.; Ansermino, J.M.; Dumont, G.A. Design and Evaluation of a Low-Cost Smartphone Pulse Oximeter. Sensors 2013, 13, 16882-16893.
Petersen CL, Chen TP, Ansermino JM, Dumont GA. Design and Evaluation of a Low-Cost Smartphone Pulse Oximeter. Sensors. 2013; 13(12):16882-16893.
Petersen, Christian L.; Chen, Tso P.; Ansermino, J. M.; Dumont, Guy A. 2013. "Design and Evaluation of a Low-Cost Smartphone Pulse Oximeter." Sensors 13, no. 12: 16882-16893.