Design and Development of a Pulse Oximetry Smartband Using Optical Method
Tasya Nagaria*, Umiatin, Widyaningrum Indrasari

Department of Physics, Faculty of Mathematics and Natural Science, State University of Jakarta, East Jakarta, 13220,Indonesia

*nagariatasya[at]gmail.com

Abstract

Oxygen saturation is the hemoglobin level in the blood that can bind oxygen. It is essential to monitor oxygen saturation because, without sufficient oxygen levels, the organs and tissues of the body to perform their functions will be impaired and may indicate a disturbance in the body. Initially, the measurement of oxygen saturation levels used an invasive method by injuring body tissues, resulting in pain and the possibility of infection. Pulse oximetry is a non-invasive method for monitoring oxygen saturation levels based on optical properties by measuring the difference in wavelengths of red light (660 nm) and infrared light (910 nm). This research carried out the design and development of a pulse oximetry smartband using optical method. MAX3012 sensors, ESP32, pushbuttons, Blynk and software (Arduino IDE AVR) were the components used. The data collected in the calibration stage is based on a homogeneous sample of 10 people that have the same age and gender . Measurements for each person were repeated five times to compairing a prototype that was design with a commercial Dennos Y68 smartwatch. The calibration data obtained heart rate accuracy of 98.6% and accuracy of oxygen saturation level of 99.3%. After calibration, effectively this smartband can be detect the heart rate and oxygen saturation in real time. The data of measurment will display on the blynk application and blynk will send the data to email.

Keywords: Heart Rate- Oxygen Saturation- Photoplethysmography- Pulse Oximetry

Topic: Physics