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

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 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 alarm. There is also be a reset button to restart the system once the l Th i l b t b tt t t t th t th driver is alerted. 8/10/2009 2

Block Diagram (Original) g ( g ) The original design of our project. This design has been revised using the QRB1114 as the main sensor. 8/10/2009 3

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. 8/10/2009 4

Software Flow Chart • Sensor is QRB1114 • Mi Microprocessor is i ATMEGA32 with ADC enabled • 3 Alert States - Green, 3 Al t St t G Yellow and Red • Voltage change across a certain threshold will t i th h ld ill cause alert system to trigger (~0.6V) 8/10/2009 5

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 of 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. 8/10/2009 6

7 Multisim Design g 8/10/2009

8 Ultiboard Design g 8/10/2009

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) 8/10/2009 9

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 8/10/2009 10

Division of Labor Division of Labor Tasks Brad Bromlow Renard Sumlar 50% 50% P Preliminary Research li i R h 50% 50% 50% Presentations / Meetings 50% 60% Documentation 40% 40% Breakout Board Design 60% 100% 100% PCB Circuit Design PCB Circuit Design 0% 0% 0% Programming / Coding 100% 40% Testing / Debugging 60% 50% Final Demo 50% 8/10/2009 11

12 Updated Gantt Chart p 8/10/2009

Bill of Materials Product P d t C Cost t $4. 49 QRB1114 Sensors (pack) Vibrator/Shocker $10. 00 Piezo Speaker $0. 00 ATMEL Processor $8. 00 AC Cigarette Adapter AC Cigarette Adapter $14 00 $14. LEDs $2. 00 Goggles 12. 00 V i Various R, C and other components R C d th t $0. 00 Total $50. 49 8/10/2009 13

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 8/10/2009 14

Overall Project Status j Select One Select One Status Status Ahead of schedule Ahead of schedule X X On schedule O O On schedule h d l h d l Behind schedule Behind schedule 8/10/2009 15