Design of simple noninvasive glucose measuring device

Diabetes is a widely spreading disease according to World Health Organization (WHO). Glucose measurement is the only mean for controlling diabetes. Invasive measurement methods are popular and accurate but they are not comfortable especially for children, elders and pregnant women, some studies refer to the effect of frequent puncturing on skin permeability. The goal of this study is to provide a reliable, simple, painless and portable method for monitoring glucose level without the need of puncturing the skin. Occlusion spectroscopy technique had been used to measure the scattering angle of Near Infrared (NIR) when interacting with glucose molecules within the tissues. A specific range of infrared spectrum (700-1400nm) was used as the incident beam. A linear position detection system was used for scattering angle detection. The system output ranges from 0° to 10°. An inversely proportional relationship between the angle of scattering and the glucose concentration was proved by comparing the resulting scattering angle for nine non-diabetic individuals with glucose concentration estimated value at similar circumstances. The study proved that Occlusion Spectroscopy can provide acceptable results for glucose concentration measurement; where the ratio between glucose concentration and the corresponding angel is (431.83333 ± 79.99444).