title: Pulse oximetry optical sensor using oxygen-bound haemoglobin.
abstract: In this paper we report a unique approach to measuring oxygen saturation levels by utilising the wavelength of the haemoglobin instead of the conventional absorption difference. Two experiments are set up to measure the wavelength of the haemoglobin bound to oxygen at different oxygen saturation levels with the help of a spectrometer. We report a unique low cost and robust wavelength monitoring SpO2sensor that measures the SpO2by using the colour of the blood and not the absorption difference of oxyhaemoglobin and deoxyhaemoglobin. With use of a spectrometer, we show that the wavelength of the oxygen-bound haemoglobin has a relation to the oxygen saturation level. The proposed device is designed and experimentally implemented with a colour sensor to measure the SpO2level of the blood.
authors.forename: Z J V
authors.initials: ZJ
authors.lastname: Cohen
authors.forename: S
authors.initials: S
authors.lastname: Haxha
authors.forename: A
authors.initials: A
authors.lastname: Aggoun
mesh_terms: D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D010092:Oximetry / Q000295:instrumentation*; D010100:Oxygen / Q000097:blood
chemical_list: D006454:Hemoglobins; C100003:deoxyhemoglobin; D010100:Oxygen