Handheld Campus Tour Guide

Michael Boyer

Advisor: Professor John Spinelli

Outline

• Project motivation

• Design requirements

• Localization

• System design

• Future work

Project Motivation

• Tours offered to prospective students:– Student-guided tours– Self-guided tours:

• Goal: Create a system that will replace and improve upon the self-guided tours

Functional Requirements

• Localization accuracy:– Ten meters outdoors– Five meters indoors (in selected buildings)

• Visual representation of location

• Contextual information

Non-Functional Requirements

• Price: less than $1,000

• Size: handheld

• Power:– Rechargeable– At least two hours per charge

• Easy to use

Localization

• Need to determine the location:– In real-time– In three-dimensions– Both indoors and outdoors

• GPS

• GSM

GPS

• Global Positioning System

• Satellite-based localization

• Available outdoors worldwide

• Not available indoors

GSM

• Global System for Mobile Communications

• Most widely used cell phone standard

• Available indoors and outdoors

• Designed for voice transmission, not localization…

GSM Training

GSM Localization

Hardware

Sony Ericsson GM28 GSM Modem:

Garmin iQue 3600 PDA:

Total Cost: < $650

$420

$220

Position Estimation

GPSTracker

Position Estimate

(Latitude/Longitude)

GSMTracker

Position Estimate

(Pixel Location)

PositionConverter

Position Estimate

(Pixel Location)

TrackerPosition Estimate

(Pixel Location)

User Interface

Outdoors(no nearby landmarks)

Indoors

User Interface

ButtonPress

Future Work

• Get GSM modem working– Take training data– Test localization accuracy

• Implement route planning

• Improve localization algorithm

• Alternate handheld technology

• Alternate location

Acknowledgements

• Professor John Spinelli

• Professor James Hedrick

• Professor Aaron Cass

• Ian Melnick

• Josh Davis & David Pheasant

Questions?