Design and Analysis of Non-Invasive Glucometer Using Semi-Cylindrical Capacitive Sensor (SCCS) Based on ATMega328P Microcontroller

This research aims to analyze the reliability of a non-invasive blood glucose detection device (glucometer) based on semi-cylindrical capacitive sensor (SCCS) with ATmega328P microcontroller. The device is designed to measure blood glucose levels non-invasively, without requiring blood sampling. This research uses SCCS to measure the dielectric constant of the finger containing glucose. This dielectric constant is then linked to blood glucose levels through a calibration equation. The calibration equation is obtained from experimental data that links the dielectric constant to blood glucose levels. The ATmega328P microcontroller is used to process signals from the SCCS and calculate blood glucose levels based on the calibration equation. The blood glucose measurement results are displayed on an I2C LCD. The reliability test of this device is carried out by comparing the measurement results with the measurement results of a standard invasive glucometer. The results of the study show that the device has an accuracy of 88.45% close to Invasive glucometer.