Date of Publication :7th December 2016

Abstract: A hemoglobin test is performed to determine the amount of hemoglobin in an individual’s red blood cells (RBCs). This is important because the amount of oxygen available to tissues depends upon how much oxygen is in the RBCs, and local perfusion of the tissues. Without sufficient hemoglobin, the tissues lack oxygen and the heart and lungs must work harder to compensate. In this proposed method, a non-invasive method for measurement of hemoglobin, oxygen saturation and pulse rate is described. The method proposed uses photoplethysmographic (PPG) signals obtained by illuminating a finger with monochromatic light at two different wavelengths. An empirical equation for calculation of Hb, SpO2 and pulse rate in blood is derived.

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