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

Our Clients..

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

Design Considerations

Use existing product - test strip based monitor

Build voice box for audio output

Build finger placing guide for client with tremor

Output : Blood glucose measurement High/Low status - alarm Average measurement

QFD Diagram

Com

EtU

Acc

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

Proposed Design

+ Voice Box +

Current Status

After opening the Accu Chek Compact we find that it is a colorimetric meter, which detects different colors to determine the level of blood glucose

The sensor is a photodiode that changes current when different level of light is shined on it and it gives a current output

Therefore we have built an I-V converter to convert the current to voltage.

However, after several trials, we failed to get any analog signal from the Accu Chek Compact.

Accu Chek Compact circuitry

I-V converter Photodiode sensor

Current Status

Another option is to obtain digital signals from the LCD display of the monitor – using different monitor.

We are also trying to obtain analog output from different type of monitors that are amperometric instead of colorimetric.

Future work

Design circuitry for voice box Record phrases for voice box Build and test circuit Build finger placing guide

Budget

Senior Design Project #26 Budget  

   

Main Components  

Accu Chek Compact 74.99

Accu Chek Software 29.99

Accu Chek Compact Test drums 27.48

Accu Chek Infrared cable 30

ACCU-CHEK® Multiclix Lancet Device 29.99

I2C Text to Speech Synthesis 102

Total 294.45

   

Misc 50

Grand Total 344.45

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 prototypeMarch Assess problems and failures Redesign and modification Changes to prototypeApril Compile and present design

poster and final results

Questions?