Smartphone-enabled Biotelemetric System For a Smart Contact Lens
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Date
2017-04-27
Authors
Chen, Luyao
Journal Title
Journal ISSN
Volume Title
Publisher
University of Waterloo
Abstract
Diabetes describes a disordered metabolic state with an overabundance of glucose in
the bloodstream, due to insu cient production or utilization of insulin to allow tissue cells
from consuming glucose. People with unmanaged diabetes could lead to many serious
complications such as heart disease, stroke, coma, kidney failure, blindness, amputation,
and premature death. Diabetes can be managed by monitoring the blood glucose level, and
control the glucose level by taking insulin, and exercising a carefully planned lifestyle with
appropriate diet and physical activities. An elegant solution for glucose monitoring is the
integration of electrochemical-based glucose sensor and microelectronics within a contact
lens, namely a smart contact lens, which can measure the tear glucose in the eye, and
correlate it to blood glucose. Currently, there is no functional smart contact lens devices
for glucose detection in the market.
This thesis focuses on providing proof of concept prototypes for implementing energy
harvesting and wireless data transmission on a smart contact lens. An all-in-one solution is
proposed to harvest energy from a smartphone, and use the same smartphone to support
glucose data extraction by backscattering. The appropriate prototype architectures are
justi ed based on a system speci cation estimated from related works. The prototypes are
designed in simulation, and then fabricated on PCBs using o -the-shelf components and
equipment. Measurements are conducted on the prototypes to evaluate their performance
against the initial assessment of requirements from related works.
Description
Keywords
biomedical, contact lens, backscattering, wireless telemetry, energy harvesting, RF