Non-invasive Glucose Meter System for Monitoring Diabetic Patients using the Photoplethysmographic Signal

Abstract

COVID-19 appeared in Wuhan (China) and spread rapidly to many places, generating a worldwide emergency, and causing concern throughout the health system due to its rapid transmission of contagion, leading to a confinement of all people. During the confinement, the lifestyle and eating habits of many people changed, potentially causing diabetes in themselves. This disease occurs when there is a high level of glucose in the blood and this can generate serious problems for the person, as there is no cure for diabetes, it is necessary for patients to control their glucose level, but for this purpose conventional glucometer equipment is used, which generates pain in patients as they introduce a needle into the finger and extract blood to measure glucose. In view of this problem, this article will develop a glucose meter system that does not require introducing a needle into the patient's finger since it will use the photoplestimographic signal generated by the oximetry sensor and can be monitored, so that the system performs the measurement without pain and shows the value of the glucose level accurately, being of immense help to diabetic patients who need to control their glucose several times a day. Through the development of the system, it was observed that the system works in the best way, when comparing the glucose level measurement with other conventional glucometer equipment, a relative error of 4.786% was obtained, being an accepted error because it is close to the real value of the glucose level in the blood. Keywords-- COVID-19, Diabetes, Microcontrollers, Oximetry sensor, Photoplestimographic signal.