EEL 4924 Senior Design (Sum09) Date: 8/4/09 Date: 8/4/09 Project - - PowerPoint PPT Presentation

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EEL 4924 Senior Design (Sum09) Date: 8/4/09 Date: 8/4/09 Project Title: SLEEP j Team Name: No Rest for the Weary Team Members: Bradley Bromlow and Renard Sumlar Team Members: Bradley Bromlow and Renard Sumlar 8/10/2009 1 Project Overview

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EEL 4924 Senior Design (Sum09) Date: 8/4/09 Date: 8/4/09

Project Title: SLEEP j Team Name: No Rest for the Weary

Team Members: Bradley Bromlow and Renard Sumlar

8/10/2009 1

Team Members: Bradley Bromlow and Renard Sumlar

SLIDE 2

Project Overview j

SLEEP is an alert system which monitors a driver and keeps them from falling asleep at the wheel. The alert system is comprised of a vibrator and speaker so that there is both a physical and audible l Th i l b t b tt t t t th t th

alarm. There is also be a reset button to restart the system once the

driver is alerted.

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SLIDE 3

Block Diagram (Original) g ( g )

The original design of our project. This design has been revised using the QRB1114 as the main sensor.

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Block Diagram (Revised) g ( )

Block Diagram of current design using the QRB 1114 as the sensor of e elid mo ement the sensor of eyelid movement.

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SLIDE 5

Software Flow Chart

Sensor is QRB1114

Mi i

Microprocessor is

ATMEGA32 with ADC enabled 3 Al t St t G

3 Alert States - Green,

Yellow and Red

Voltage change across a

t i th h ld ill certain threshold will cause alert system to trigger (~0.6V)

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SLIDE 6

QRB1114

This sensor contains a matched infrared transmitter (LED) and a phototransistor pair These devices work by measuring the amount phototransistor pair. These devices work by measuring the amount

f light that is reflected into the receiver. Because the receiver also

responds to ambient light, the device works best when well shielded from ambient light and when the distance between the sensor and from ambient light, and when the distance between the sensor and the reflective surface is small.

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SLIDE 7

Multisim Design g

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SLIDE 8

Ultiboard Design g

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SLIDE 9

Progress to Date g

PCB has been printed and populated
PCB is operational after trouble shooting
Code is operational (still tweaking the time delay)
QRB1114 has been placed in goggles (still tweaking placement)

QRB1114 has been placed in goggles (still tweaking placement)

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SLIDE 10

Current Work

Our focus for the next few days will be:

Finding housing for the PCB
Adjusting the position of the sensor in the glasses
Tweaking the code

Tweaking the code

Working on the presentation board

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SLIDE 11

Division of Labor

Division of Labor Renard Sumlar Tasks Brad Bromlow 50% P li i R h 50% 50% Preliminary Research 50% 50% Presentations / Meetings 50% 60% Documentation 40% 40% Breakout Board Design 60% 100% PCB Circuit Design 0% 100% PCB Circuit Design 0% 0% Programming / Coding 100% 40% Testing / Debugging 60%

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50% Final Demo 50%

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Updated Gantt Chart p

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SLIDE 13

Bill of Materials

P d t C t Product Cost

QRB1114 Sensors (pack) $4.49 Vibrator/Shocker $10.00 Piezo Speaker $0.00 ATMEL Processor $8.00 AC Cigarette Adapter $14 00 AC Cigarette Adapter $14. LEDs $2.00 Goggles 12.00 V i R C d th t Various R, C and other components $0.00 Total $50.49

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SLIDE 14

Future Improvements p

Additional sensors to monitor head movement
LEDs located in goggles to act as part of the alert system
More streamline glasses or not using glasses at all
Exploring the option of using the smaller surface mount QRB1114

Exploring the option of using the smaller surface mount QRB1114

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SLIDE 15

Overall Project Status j

Select One Status Select One Status Ahead of schedule Ahead of schedule X O h d l O h d l X On schedule On schedule Behind schedule Behind schedule

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