Accessible Blood Glucose Monitor

Adviser: Dr Franz BaudenbacherSponsor: Dr John EnderleTeam Members:Nor Haslin Mohd AliMus’ab ShaharomYazmin Zakaria

Project background

National Student Design Competition Project Choice: Accessible Blood Glucose

Monitor Funding: $ 2000 Advisor: Professor Baudenbacher

Statistics on diabetes

7% of the population have diabetes (20.8 million)

12 000 – 24 000 new cases of blindness each year.

60-70% of diabetic have mild to severe form of nervous system damage

Our Clients..

All clients have diabetes Dave – 22, has limited use of his right arm and

leg. Wanda – 12, has low vision, encouraged to start

administering insulin to herself Lloyd – 80, has some hearing loss and is very

overweight (400lbs). Arnold - has Parkinson’s disease, and

experiences slight to moderate tremors. He lives alone.

Project Goal

The blood glucose monitor must communicate effectively visual display and voice output. calibration and expiration dates of test strips ease of learning, storage of all components,

cleaning and maintenance. affordable and portable

Our Goal…

To win the First Prize for the competition, receive the $1000 cash prize.

Problem

Existing blood glucose monitors in the market do not satisfy the needs of all our clients. Also, some of them are quite expensive.

Available voice box in the market work with only certain monitors and are expensive. E.g voice box for Ultra

Voicemate

Sensocard

Glucowatch

Voicebox Ultra

QFD Diagram

Com

E

t

U

A

c

c

Quality Function Weight(5) 1 2 3 4 5

Audio Output + + + 5 A, C B

Quick result + 3 C B A

Preload test strip + + 5 B C A

Finger guide + 4 A,C B

One Hand Usage + 4 C B A

Price + 5 B A C

Portability + 5 B A,C

Auto calibration + + 5 B,C A

Minimum blood amount + 3 B A C

A = Accu Chek Compact = 151

B = Accu Chek Voice Mate = 99

C = Ascensia Breeze = 121

ACCU CHEK COMPACT!!

Comm = communication

Etu = Easy to use

Acc = Accuracy

Design Considerations

Use existing product - test strip based monitor

Build voice box for audio output

Build finger placing guide for client with tremor

Proposed Design

+ Voice Box +Blood

Glucose Monitor

Technical Steps1) Obtaining signal from glucose monitor Approach 1: Analog signal from sensor

(Failed) Approach 2: Digital signal from LCD (Failed) Approach 3: Analog signal from beeper

(Succeeded)

2) Build circuit

Accu Chek Compact circuitry

I-V converter Photodiode sensor

Approach 1Obtaining analog from sensor

Failedsensor

ReliOn LCD

Logic analyzer

Approach 2Obtaining digital signal from LCD

Failed

Accu Chek Compact Plus beeper

Approach 3Obtaining analog signal from beeper

Succeeded

beeper

Block diagram

Speech ICMicroprocessorA/D SpeakerBeeper

Glucose monitor

Current Status

With the help of Dr Karsai, we are now able to tap into the signal of the beeper.

We now are trying to rectify the signal and convert it into a digital signal that could be used for our speech chip.

Future work

Buy microprocessor and speech chip Program the microprocessor Build voice box

Timeline

December Research existing products and

clients' needs Produce initial idea Compile resources and

materials needed Cost assessmentJanuary Review existing materials Design prototype Development of prototype

February Development of prototype

(continued) Test prototype

March Assess problems and failures Redesign and modification Changes to prototype

April Compile and present design

poster and final results

Questions?