Reflectance Pulse Oximetry using Single Light Source
Year: 2012
Type: conference-paper
Abstract: Pulse oximeter is a basic tool to measure oxygen saturation (SaO2), the percentage of oxygenated hemoglobin (HbO2) in total hemoglobin. It is traditionally recommended as a standard medical device for the care of every general anesthetic, and also has been recommended as an important care tool for new born infants and patients during surgery. About 20% of the air they breathe is oxygen. Many situations will be there to care the patients from affecting hypoxia before it makes harm to them. The situations comprises: in the operating room during anesthesia, in the post operative recovery, in an ambulance while being transported to the hospital after a cardiac or pulmonary signs, and in the neonatal care unit to closely monitor a newborn's vital signs. To monitor heamoglobin levels pulse oximeter helps at ease. It is for these reasons that pulse oximetry became more important in medical care. Deficiency of oxygen is said to be a disease called hypoxia. Pulse oximetry is a non-contact(not penetrating) method of determining blood oxygen saturation level. Transmission and reflectance are two non-invasive techniques to perform pulse oximetry (SpO2). Reflectance pulse oximetry technique is used here. Existing system used RED and INFRARED light source. Our propsed system mainly make circuit simplicity with the help of single light. In this project when light incident on the finger the reflected light absorbed by photodetector and convert to frequency or voltage. The frequency or voltage output is amplified and fed to CRO. A waveform generated matched with actual waveform and validate the result.
Source: Procedia Engineering
Authors: M. Jyothish Kumar, V. Arun Kumar
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2017178356