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Towards the Portability of a Capacitive-sensor based Non-invasive Glucometer: A Simulation Approach

This work presents some proposals to improve the portability of a recently-reported capacitor-sensor based non- invasive glucometer. These proposals include removal of some hardware such as the dummy capacitor and an OPAMP in one side and the generation of low-frequency, low-voltage ac signal from the microcontroller instead of using separate source in other side. The proposed changes are implemented and tested using the Proteus simulation tool. The results are consistent and optimistic as well and hence, not only prove the validity of the suggested changes but also paves the way for their near-future implementation in hardware with minimal cost and increased portability. A possible double-layer PCB layout design is also presented to demonstrate the cost reduction as well as the improved portability and the wearability of the modified non-invasive glucometer.