부산대학교 도서관

The world’s population of diabetic patients has been growing recently. The technique most usually employed to quantify blood glucose levels is invasive causing pain, uncomfortable, expensive, and raising the risk of the transmission of infectious infections. In this article, we suggested a non-invasive method for detecting blood sugar levels to have a safe and painless measurement. It is based on near-infrared spectroscopy at a wavelength of 940 nm, which was chosen because it is appropriate for measuring blood glucose. It consists of a transmitter and a receiver. The NIR light is sent to the finger and interacts with the blood glucose. The transmitted signal is detected by the photodetector. The photo detector’s output current is transformed into a voltage signal before being filtered and amplified. By examining the variation in received signal strength that is obtained after reflection, the concentration of glucose in the blood can be identified. By using a 2nd order polynomial regression equation based on the recorded voltage the glucose concentration is determined. The outcomes of the suggested system demonstrate the viability of a non-invasive, NIR-based approach for measuring blood glucose. The glucose value is also displayed via a mobile app. By which the user can use to determine their blood glucose level and continue their routine at the right time.