Changes of signal level detection in a resonant microwave cavity with varying concentrations of glucose

Diabetes is the body’s inability to control blood glucose levels and diabetes is a chronic disease, which is a major threat to public health. Traditionally, the measurement of glucose was achieved using invasive (skin piercing) methods which causes pain and damage to skin. A non-invasive device to test blood glucose level will avoid these drawbacks and minimise the complications of diabetes. The main aim of the project is to investigate the relationship between varying concentrations of glucose in a water solution (to simulate blood) and the signal level within a resonant microwave cavity, which is the key to the development of a non-invasive blood glucose monitoring system. This thesis outlines the mechanical design, electronic and software design, involved in the development of such a system. In this project, the RSSI (received signal strength indicator) measurement is used to measure the signal levels within a microwave cavity. This was taken from a one of a pair of HC-05 Bluetooth modules, one operating as a transmitter, and one operating as a receiver. The results of experiments confirmed a significant correlation between RSSI and glucose concentration – and thus, the success of the system. As well as proving itself to be a viable non-invasive blood glucose measurement system, additional features of this system were low cost, and expandability.

Grantor dc:publisher

Oxford Brookes University

Year dc:date

2017

Author dc:creator

• Qi, Yanli

Contributors dc:contributor

• Hayatleh, Khaled
• Barker, Steve

Statement dc:rights

• All rights reserved

Language dc:language

en

DOI dc:identifier

https://doi.org/10.24384/wpqe-fr48

OAI identifier oai:identifier

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