Journal of Innovation in Electronics and Communication Engineering

In this paper, a microcontroller based system for the measurement of glucose is designed and implemented for Rhoeo discolor leaf extract based glucose biosensors. An electronic circuit known as potentiostat is built for the three electrode electrochemical cell which incorporates the leaf extract based biosensor. The signals fromthe biosensor is further processed using suitable circuitry and is interfaced to the microcontroller. Liquid crystal display is used to display the concentrations of glucose solutions. The stored glucose values are transferred into a personal computer through serial bus and also to a smartphone using a Bluetooth module. Software is developed in C language using mikro C Pro for PIC and schematics of potentiostat and glucometer are designed using Proteus Schematic capture tool. To achieve high accuracy, the proposed meter uses transcendental concentration equation over the linear equation used in existing commercial meters. The instrument is tested for various concentrations of glucose solutions.