en A Three-Wavelength Pulse Oximeter for Carboxyhemoglobin Determination الکترونیک Electronic پژوهشي Research <p><span style="text-align: justify;">Pulse oximetry measures the relative concentration of arterial oxygenated hemoglobin and reduced hemoglobin. This&nbsp;</span><span style="text-align: justify;">paper presents the design of a pulse oximeter, which measures the presence of a third substance, carboxyhemoglobin&nbsp;</span><span style="text-align: justify;">(HbCO), by unfiltered LEDs at 660 nm, 810 nm, and 940 nm. Background information is given on the theory of pulse&nbsp;</span><span style="text-align: justify;">oximetry. Theoretical approximations and calculations which are implemented in our instrument are presented. Sensor&nbsp;</span><span style="text-align: justify;">design and a flowchart, showing the signal processing routine that accomplishes the required analysis is included. The&nbsp;</span><span style="text-align: justify;">problem of noise occurrence during the signal processing routine is also discussed.</span></p> <p style="text-align: justify;">Pulse oximetry measures the relative concentration of arterial oxygenated hemoglobin and reduced hemoglobin. This paper presents the design of a pulse oximeter, which measures the presence of a third substance, carboxyhemoglobin (HbCO), by unfiltered LEDs at 660 nm, 810 nm, and 940 nm. Background information is given on the theory of pulse oximetry. Theoretical approximations and calculations which are implemented in our instrument are presented. Sensor design and a flowchart, showing the signal processing routine that accomplishes the required analysis is included. The problem of noise occurrence during the signal processing routine is also discussed.</p> Oximeter, pulse oximeter, hemoglobin, oxygenated hemoglobin, carboxyhemoglobin, sensor design, signal processing Oximeter, pulse oximeter, hemoglobin, oxygenated hemoglobin, carboxyhemoglobin, sensor design, signal processing 1 7 http://jiaeee.com/browse.php?a_code=A-10-1-173&slc_lang=en&sid=1 R. P. Buinevicius R. P. Buinevicius 1003194753284600963 1003194753284600963 Yes J. G. Webster J. G. Webster 1003194753284600964 1003194753284600964 No