Abstract

GOMEZ GARCIA, Carlos Andrés  and  VELASCO MEDINA, Jaime. A PULSE-OXIMETRIC AND CAPNOGRAPHIC SYSTEM FOR ANDROID MOBILE DEVICES. Rev. ing. biomed. [online]. 2014, vol.8, n.15, pp.36-44. ISSN 1909-9762.

Constant monitoring of oxygen saturation level and CO₂ production is vital for monitoring the patient's respiratory status. This paper presents the design of a pulse-oximetric and capnographic system, which core consists of a mixed signal programmable chip, PSoC (Programmable-System-On-Chip), which incorporates a whole analog and digital configurable block system, in order to adequate and process the signals from the sensors all in a single chip. An Android application was also developed, which can display biomedical signals in mobile devices with wireless connectivity, as well as to store information from these signals in a local user database. The microsystem was verified using a SpO₂ (oxygen partial saturation) simulator, and heart rates of 55 BPM to 145 BPM were calibrated, as well as the R curve with values of 75% to 100% SpO₂. The heart rate measurement error found is 1,81% and 1,33% for the SpO₂.

Keywords : Android; Biomedical signals; Capnography; Embedded systems; PSoC; pulse oximetry.

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