Wherefore Art Thou, My Bus?

Clark Cianfarini, Trevor Key, & Scott Ritchie

Topics

Overall Description Algorithms Operating Restrictions User Interface System Init & Recovery Feasibility/Problems Multidisciplinary Components Testing Strategy Project Costs

Clark Cianfarini

Trevor Key

Scott Ritchie

Overall Description

This project will compute real-time predictions of when buses will arrive at stops. The information will be available online and at select bus stops.

System Components

Algorithms

Iterative designRoutes created as series of checkpoints Interpolate time to next checkpointAdd summation of time to all successive

checkpoints Optimized for small geographical areas Target accuracy: ±1 minute

Operating Restrictions

Buses must be in range of GPS satellites and some form of internet connection

Users and Bus stop displays must have some form of internet connectivity

Buses report their location at least one time for each stop on the route

Buses do not report erroneous data often enough that thrown out updates make the update frequency less than the above-stated minimum

End User Interface

Admin Interface

Admin Interface

Admin Interface

Hardware Bus Stop Display

Internet(Bus tracking server )

Wi-Fi AP

ASUS WL-520GUWi-Fi AP/Router

RS232

LED or LCD Display,Or Terminal

AC power

System Initialization

MySQL Server Apache Web Server Backend

Bus Data Polling Bus Arrival Estimator Bus Stop Display Handler

Registered as services in Windows

Crash Recovery

Any process that fails will need to be restarted individually

If backend fails, web site will still function but display old data

The admin will need to restart any failed service manually

Project Feasibility & Anticipated Problem Areas RTS bus data

Tested acquisitionPossible backup

Android app WebOS app App for laptop

Hardware display needs experimentation

Multidisciplinary Components

Electrical Engineering Bus stop display

Information Technology Management of server system and services SQL Database Programming

Civil Engineering Public transit and traffic management

Computer Science and Software Engineering Programming of software

New Media Design Web interface design

Testing Strategy

Unit Testing Regression Testing Generate random test data Verify web sites display on multiple

popular browsers

Integration

Everything communicates through the database – they must play nice with each other

No data is written by more than one component

Project CostsComponent Description Quantity Cost Cost for Us AvailabilityServer PC to run server software

for system1 $500+ Free (provided

by Rick)On hand

LCD Display Display unit to be used with hardware display

1 $50 Free (provided by Rick)

Online

Router ASUS WL-520gU

Router used to pull information from server and control LED display

1 $45 $45 Online

Misc Cables Serial cable 1 $10 Free On handVisual Studio IDE for developing the

server component3 Free (Academic

Version)Free Online

Google Maps API UI Element for displaying maps and routes

1 Free for non-commercial use

Free Online

Dreamweaver Website development software

1 $200 Free On hand

MySQL SQL database software 1 Free Free On handApache Web server software, used

to host web interfaces1 Free Free On hand