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Meter Fundamentals

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Freescale Semiconductor Application Note

Document Number:AN4364 Rev. 1, 01/2013

Glucose Meter Fundamentals and Design by: Miriam Garcia Yanez

Contents

1 Introduction
This application note shows a basic glucometer using Freescale products to determine approximate concentration of glucose in blood. This glucometer can be implemented with K53 microcontroller of the Kinetis family and with MCF51MM and S08MM128 MCUs, part of the Flexis MM family. It includes Freescale USB stack to show data through a graphic user interface (GUI) in a PC. This application note is for anyone with an interest in glucometers as a medical electronic application, such as biomedical engineers, physicians, medical equipment developers, or someone out of those fields but with an interest in the operation of a glucometer.

1 2 3 4 5 6 A B

Introduction..............................................................1 Glucometer fundamentals.........................................1 Glucometer implementation......................................2 Software model.........................................................7 Running MED-GLU demo.....................................14 References...............................................................25 Software timer........................................................25 Communication protocol.........................................27

2 Glucometer fundamentals
This section provides basic explanation of blood glucose regulation process in a human body and principle functionality of a glucometer.

© 2013 Freescale Semiconductor, Inc.

Glucometer implementation

2.1 Natural blood glucose regulation
Glucose (C6H12O6) is a carbohydrate whose most important function is to act as a source of energy for the human body, by being the essential precursor in the synthesis of ATP (adenosine triphosphate). The energy stored in ATP

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