Download Design of a Personal Health Monitor Interface for Wireless, IP PDF

TitleDesign of a Personal Health Monitor Interface for Wireless, IP
File Size3.4 MB
Total Pages164
Table of Contents
Table of Contents
List of Figures
List of Tables
Executive Summary
1  Introduction
2  Project Description
	2.1 Project Objective
	2.2 Project Mission
	2.3 Project Specifications
3  Background
	3.1 Diabetes mellitus
		3.1.1 Glucose Monitoring
	3.2 Medical Telemetry
		3.2.1 Wireless Health Monitoring
	3.3 Prior Art and Research
		3.3.1 Prior Art for Glucometers
		3.3.2 Prior Art for Wireless Transmission of Glucometer Data
		3.3.3 Prior Student Research
4  Project Planning
5  Design Methodology
	5.1 User Interface Requirements
		5.1.1 Customer Needs
		5.1.2 Display Module
		5.1.3 Application Layout
		5.1.4 User Input Controls
		5.1.5 Concept Renditions
	5.2 Choosing an LCD
	5.3 Choosing a Development Board
	5.4 Software Engineering
		5.4.1 Choosing an Operating System Choosing a Build Environment
		5.4.2 Choosing an Embedded Windowing Environment
		5.4.3 Choosing an Application Design Language
	5.5 Wireless Module
		5.5.1 Choosing a Wireless Network Type
		5.5.2 Selection of an 802.11 Specification
		5.5.3 Wireless Security and Encryption
		5.5.4 Selecting of Interface Method with the OMAP5912 OSK
		5.5.5 Selecting a Wireless Module
6  System Specifications
	6.1 System Overview
	6.2 User Input
		6.2.1 Input Characteristics
		6.2.2 Pushbutton Circuitry
	6.3 Liquid Crystal Display (LCD)
		6.3.1 Technical Background
		6.3.2 Integration
	6.4 Wireless Technology Background
		6.4.1 Terminology
		6.4.2 802.11 b
		6.4.3 802.11g
		6.4.4 Security
		6.4.5 Wireless for Development Application
	6.5 Software Background and Specifications
		6.5.1 Pyramid of Software in Embedded Systems Operating System
		6.5.2 Communications Protocol Reverse Engineering the TheraSense FreeStyle Mini Glucose Meter
		6.5.3 GUI and Application
7  Implementation and Results
	7.1 Simulation
		7.1.1 LCD Driver Quad Op-Amp Voltage Bias Simulation Voltage Regulator Simulation
		7.1.2 User Input Circuit Simulation
	7.2 PCB Design
		7.2.1 Computer Aided PCB Layout
		7.2.2 Component Layout
		7.2.3 Error Checking
		7.2.4 Finalizing the PCB Design
	7.3 Testing
		7.3.1 Development Board
		7.3.2 LCD Driver Voltage Reference Quad Operational Amplifier
		7.3.3 User Interface
	7.4 Software Implementation
		7.4.1 Operating System Implementation
		7.4.2 Protocol Implementation
		7.4.3 Implementation of GUI and Application
		7.4.4 Database Implementation
	7.5 Wireless Module
	7.6 LCD Troubleshooting
		7.6.1 LCD Module Malfunction
		7.6.2 LCD Module Malfunction Possibilities
		7.6.3 Experiments to Reveal Problem
		7.6.4 LCD Module Solution
8  Recommendations
	8.1 Proof-of-concept Recommendations
	8.2 Final Product Recommendations
9  Conclusion
A1  Project Description
A2  Complete Parts List
Document Text Contents
Page 1

Design of a Personal Health Monitor Interface
for Wireless, IP-based, Data Logging

A Major Qualifying Project Report

submitted to the Faculty

of the

Worcester, Massachusetts, USA

in partial fulfilment of the requirements of the

Degree of Bachelor of Science

on this day of

Friday, October 13th, 2006



Vanessa M. Castro


Bryan R. Kaanta


Scott R. Sideleau

Advisor _________________________ Co-advisor _________________________
Prof. Richard F. Vaz Prof. Donald R. Brown

Page 2

WPI – MQP Ireland A’06 Enterprise Research Centre, UL

Collaborating with the Enterprise Research Centre at the University of Limerick (UL) in

Ireland, we designed, developed, and implemented a proof-of-concept glucose meter adapter that

allows blood glucose level readings to be securely transmitted to a remote database via existing

WiFi technology. By using open source software and embedded components, we have created a

highly flexible platform that allows healthcare professionals to monitor patients in near real-time.

Our device aims to simplify the lifestyle of diabetics while providing new opportunities for

statistical research and analysis of diabetes.

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WPI – MQP Ireland A’06 Enterprise Research Centre, UL

from National Semiconductor to provide us with the necessary 3.0V. This component, however,

does not exist in MultiSim component library. Instead of using a similar component, which

would not behave the same the LP2966, we created the component using the internal diagram

shown in Figure 7-3 which comes directly from the datasheet. The components within the

integrated circuit combined to form a ‘box’ with the respective input and output pins, and that

‘box’ represents the LP2966.

Figure 7-3: Internal Schematic for LP2966

Once the above circuit had been constructed, simulations went underway to establish the

functionality of the particular parts. We connected the inputs and outputs according to guided

design in Figure 6-12. We preformed a DC Sweep on the circuit, and Figure 7-4 shows the


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WPI – MQP Ireland A’06 Enterprise Research Centre, UL

LP2966M DC Sweep











2.7 3 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 6 6.3 6.6 6.9

Inputed Voltage



Error 1

Figure 7-4: DC Sweep for LP2966M

Figure 7-5 shows the integrated circuit with the connections needed for our circuit, as well as the

measurement probes in order to obtain reading. Through the measurement probes, we were able

to view the same results that were outputted through the DC Sweep.

Figure 7-5: Simulation layout for voltage reference

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WPI – MQP Ireland A’06 Enterprise Research Centre, UL

Figure A7-16: PCB Creation Flow Chart

(PCB 2006)

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WPI – MQP Ireland A’06 Enterprise Research Centre, UL

A8 Source Code

Due to the size of the various source code and configuration files, please consult the CD that
accompanied this report or contact the project team directly at [email protected] for more

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mailto:[email protected]

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