Development of a pulse oximeter robust tomeasurement errors, with the ability to estimate heartrate and transmit data to smartphones

Accurate and real-time monitoring of saturated oxygenlevel of the blood is an important clinical issue gaining greatattention in recent years and during COVID ۱۹ pandemic.Monitoring the patients` ventilation and respiration dynamic iswidespread and has been adopted as a standard for anesthesia,neonatal care, and post-operative recovery as well. In this paperthe fundamentals of current pulse oximeter devices are reviewedand development of a prototype is explained. Our system has twored and infrared light sources radiating to the tissue. The amountof absorbed and transmitted energy is measured by thephotodetector, and finally the amount of oxygen content of theblood is estimated based on these values. We used MAX۳۰۱۰۰module. Our system has two advantages relating to similardevices; robustness to errors due to power supply variations,ambient light and motion artifacts. Our system has also the abilityto estimate heart rate and transmit the data to a smart phone. Thismakes our proposed system a potentially good hardware for homemonitoringof blood oxygen and respiration efficiency ifcollaborated with a good mobile application for detecting bloodde-saturations.

Keywords:

non-invasive oximetery , pulse oximetry , home-basedhealth monitoring , mobile health (mHealth) , Ardoino , MAX۳۰۱۰۰