WEEK 8: DESIGN PROJECT BLOCK DIAGRAM

In the process to develop non-invasive blood glucose monitoring system, it is divided into several main parts. To analyse and predict glucose concentration, it is possible by using glucose spectroscopy between wavelength 1100nm to 2450nm. The system setup consists of a reflective optical sensor, for transmission and reception of NIR rays with the fingertip as the body site. NIR signals are passed through the fingertip and detected photodiode. Then photodiode current output will convert into voltage signal by current to voltage converter. After that, the output will filter and amplify using high pass filter, low pass filter, noise filter and amplifier before conditioned for better result. The output is then fed to microcontroller unit to process the receiver signal and performed voltage variation analysis as to monitor whether the obtained value is within threshold.