Shuttletrack Shuttletrack: GPS on SafeRides With support from MIT-Microsoft iCampus Project

Shuttletrack

Shuttletrack:GPS on SafeRides

With support from

MIT-Microsoft iCampus Project

Shuttletrack

Outline

• Motivation for ShuttleTrack

• Overview of ShuttleTrack

• Team and Expertise

• Summary

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Outline




• Summary

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Aggravated Assault

1998 1999 2000

On-campus (incl. res.)

3822 3606 3644

Residence halls

n/a 1082 1093

Non-Campus

n/a 2727 3840

Public Property

n/a 10396 11277

Total n/a 16729 18761

Courtesy:

http://www.campussafety.org/crimestats/2000.html

Campus crimes within US

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Issues closer to our campus…

Mattapan man shot near campus Apr 9

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New dorms coming near campus

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In Summary…In Summary…

MITStudents need a safe transit service

Why?Inclement weather and traffic causes delay

reliable

Solution:

GPS tracking of Saferides

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Ideally, what people want is…

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ShuttletrackShuttletrack

MIT SAFERIDE VANS

MIT COMMUNITY

The BIG picture

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Seems easy. Haven’t people already done it ?

http://directory.google.com/Top/Business/Industries/Telecommunications/Wireless/Location_Based_Services/Vehicle_Tracking/

Google lists over 100 companies* doing GPS fleet tracking. Why not borrow their idea and install on our vans?

*

Features:

• CDPD/cellular service

• Need commercial GIS software

• Generic nation-wide product

Too expensive

Maintenance is difficult

Not optimal for Saferide

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Our approachAdvantages:

• Low cost

• Low maintenance

• Building on existing infrastructure

• System-specific solution

• Sustainable in the longer run

• Can be promoted to other Universities

TIMELINE

• One van by end of Spring 2002

• Entire saferide fleet by end of 2002.

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Outline




• Summary

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Technology

Base station

GPS on van

Web server

Radios in vans

Mapping (GIS) / Arrival estimationRadio modem

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Step 1: Establish Modem CommunicationStep 2: Send GPS dataStep 3: Check and correct for interference

Modem ModemRadio Radio

Communications Technology

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GPS data to web display gps.log$GPRMC,222923,A,4221.5890,N,07106.6284,W,000.0,041.9,290402,016.0,W*73

$GPGGA,222923,4221.5890,N,07106.6284,W,1,06,2.7,44.5,M,-33.1,M,,*49

$GPGSA,A,3,,,,,,15,17,18,,23,26,29,2.7,2.7,1.0*36

$GPGSV,3,1,12,03,07,320,,06,11,211,31,08,02,029,,09,29,161,*7E

$GPGSV,3,2,12,10,21,090,,15,58,302,48,17,73,287,48,18,44,295,48*7C

$GPGSV,3,3,12,21,11,285,,23,66,049,44,26,62,048,44,29,70,238,51*77

$GPRMC,222924,A,4221.5892,N,07106.6283,W,000.0,041.9,290402,016.0,W*71

$GPGGA,222924,4221.5892,N,07106.6283,W,1,06,3.1,44.4,M,-33.1,M,,*4D

$GPGSA,A,3,,,,,,15,17,18,,23,26,29,3.1,3.1,1.0*36

$GPGSV,3,1,12,03,07,320,,06,11,211,31,08,02,029,,09,29,161,*7E

$GPGSV,3,2,12,10,21,090,,15,58,302,48,17,73,287,49,18,44,295,48*7D

$GPGSV,3,3,12,21,11,285,,23,66,049,45,26,62,048,44,29,70,238,50*77

$GPRMC,222925,A,4221.5891,N,07106.6282,W,000.0,041.9,290402,016.0,W*72

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Regular Route

Route Segments

Stop Areas

84 Mass Ave. Stop 1

Tang Hall

Albany Garage

Short-Turn Route

Arrival time estimation

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Outline




• Summary

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Team roles

Base station

Web server

GPS on van

Radios in vans

Mapping (GIS) / Arrival estimation

Radio modem

Bill

Ging ging

Terran

Terran, Ryan, Sivaram

Cordy

Project Management: Sriram, Salil

Research/Documentation: Nina

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Contact info

• Krishnan Sriram • Salil Soman• Cordy Crockett• Ging Ging Liu• Nina Menezes• Ryan Tam• Sivaram Cheekiralla

Technical Advisors:•Terran Melconian•William Hall•John McDonald

[email protected]

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Outline




• Summary

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Summary and status report

• Radio hardware is currently being assembled

• Web development is underway in collaboration with ENVIT

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Step 1: Establish Modem Communication

• Configure modem – Determine communication protocol to use – Send and decode messages (e.g. “HELLO”, send

modem ID, packet number, check sum)



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Step 2: Send GPS data

• Configure GPS – modem connection– Initialize settings for GPS box using Kantronics

box– Kantronics box parses NMEA string and saves in

memory– Kantronics box packetizes GPS data and sends it.



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Team roles…

• Communication hardware module

• GIS server module

• Display module

• Arrival time estimation

• Collaboration with MIT admin and related initiatives such as ENVIT

• Documentation

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Step 3: Interference Study

• Determine GPS send frequency• Determine data reception rate at base

station with voice interferences on channel.



Documents

Shuttletrack Shuttletrack: GPS on SafeRides With support from MIT-Microsoft iCampus Project