Electrical and Computer Engineering Department

Senior Design Project 2012Team Xia

Geoff Hermann, Ben Bromberg, Rodrigo Bismonte, Patrick Estabrook

Simple Awareness of Vehicles and Assorted

Night Traffic(SAVANT)

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Problem Statement

We wish to reduce injury and death to pedestrians and bikers caused by lack of visibility.

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System Overview

Users of the road wear GPS devices transmitting their location

Motor vehicles have receivers and transmitters

Displays the location of received GPS information on the windshield (Heads Up Display)

Simple

Awareness of

Vehicles and

Assorted

Night

Traffic

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Block Diagram

The RF “Æther”

Helical GPS

Xbee RF Transmitter

Microcontroller

Helical GPS

Xbee RF Transmitter

Microcontroller

Car System Pedestrian/Cyclist System

Xbee RF Transciever

GPS

BeagleBoard on-board Computer

Display System

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Pedestrian/Cyclist Module (PCM) Prototype

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GPS Module

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ATMega328P Microcontroller

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Xbee Module

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Automobile Module (AMM)

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BeagleBoard

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Demonstration!

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MDR Goals/Progress

I. Learning Phase• GPS, XBee, ATTiny, BeagleBoard

II. Communication Phase• Getting all the components talking to one another

• Make connections, send and receive data

III. Software Phase• Write the basic transmit/receive software for each part

of the system• ATTiny, XBee, BeagleBoard

IV. Prototype• Get the transmit/receive system working in the

proposed fashion

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MDR Goals/Progress

I. Learning Phase• Task 1 - (car, ped) learn about GPS modules • Task 2 - (car, ped) learn ATTiny programming software, procedure• Task 3 - (car, ped) learn about XBee programming, TX and RX • Task 4 - (car, ped) learn about BeagleBoard programming

II. Communication Phase• Task 5 - (car, ped) interface GPS with ATTiny microprocessor • Task 6 - (car) interface GPS with BeagleBoard • Task 7 - (ped) interface ATTiny with XBee module• Task 8 - (car) interface BeagleBoard with XBee module (TX, RX)

III. Software Phase• Task 9 - (ped) write software for ATTiny microprocessor • Task 10 - (car) write transmitter software for BeagleBoard • Task 11 - (car) write receiver software for BeagleBoard

IV. Prototype Phase• Task 12 - (car) prototype car TX/RX • Task 13 - (ped) prototype ped TX

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MDR Goals/Progress

Cost Breakdown

BeagleBoard Donated Donated

XBee modules $45.90 (2) $68.85 (3)

ATtiny13A $1.07 (1) $2.14 (2)

EM-4061 GPS module for CAR $59.95 $59.95

GS407 Helical GPS module for PED

$89.95 (1) $179.90 (2)

Optoma EP-PK-101 10 lumen pico projector

$170.80 $170.80

8”x11” Clear Rear projection film

$20.00 $20.00

Total $387.67 $501.64*donated, not included in final cost estimate

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MDR Goals/Progress

Cost Breakdown

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Spring Semester Tasks

Extending software for multiple transmitting and receiving devices

Power circuits for car module and pedestrian module• Battery considerations• Power management in software

Printed circuit board design for pedestrian module

GUI design for car module Final enclosure designs

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Deliverables

Midterm Design Review• Working receiver and transmit circuit on

breadboard

Final Design Review• 1-2 working bike/pedestrian transmitters (depending on

budget)• Receiver installed in car• On-Windshield Display