1. Electrical and Computer Engineering Dynamic Advertising System Midway Design Review – December 7, 2009 Team Zink Nicholas Cipriano, Ali Jameel, Jeremy Mestancik, Brian Simakauskas

2. 2 Electrical and Computer Engineering Background  Dynamic Advertising creates a system that allows organizations to schedule advertising based on time and location on public transportation systems  A user friendly website allows users to select ad space and time with a few clicks of the mouse Saves time Ads can begin displaying just minutes later  Advertisements display – still images or animations on LCD screen located inside bus

3. 3 Electrical and Computer Engineering Block Diagram

4. 4 Electrical and Computer Engineering  User login  select.php allows user to: View uploaded ads Upload a new ad Enter GPS coordinates, enter times, select route, select ad, submit  Every user submission creates a new table or entry in MySQL database Web Server – Website

5. 5 Electrical and Computer Engineering Web Server – MySQL Database  Images stored in a folder MySQL contains file path Images

6. 6 Electrical and Computer Engineering Web Server – PHP and FTP  PHP Inserts data into MySQL tables Searches MySQL tables to select which advertisements busses will need Helps to create dynamic web pages – can display to a user available advertising space, times, etc.  FTP (File Transfer Protocol) Transfers files to bus

7. 7 Electrical and Computer Engineering Transfer Protocol  Stream Sockets  Connection-Based Sequential and non-duplicated Data transfer  Bus/Client socket connects to Website/Server socket requesting information  Two different requests from buses Schedule request Ad request

8. 8 Electrical and Computer Engineering Transfer Protocol Cont.  Protocol Bus contacts server and sends identifying information Server processes info and sends bus required ad schedule info Bus processes schedule info and forms a queue of ads not available in bus memory, starting with the ad needed soonest. Bus requests ad from server Ads written into memory replacing least recently used ad not in daily schedule

9. 9 Electrical and Computer Engineering Read Files From Server  Reading Files is done in C  Take files from web server and input them into a.txt file  Data taken in for ads is start time, end time, start latitude, end latitude, start longitude, end longitude, and the advertisement name  We use two 2D arrays to hold the data One array for integer information (ie. start time… etc) Adinformation[ad#][integer data ] One array for char information (ie. ad name) Adname[ad#][ ad name]

10. 10 Electrical and Computer Engineering Displaying The Advertisement  Ads displayed in a web browser  Displayed using HTML and JavaScript Able to auto refresh the page at any increment of time Able to display image in full screen without sidebars Able to preload images so there is no delay between changes  If C programs DisplayThisAd.jpg to a file in the advertisement directory the ad is displayed.  If DisplayThisAd.jpg is not in the directory, display a default image

11. 11 Electrical and Computer Engineering Reading The GPS Information  The COM port is opened in C  The GPS unit displays information in NMEA format  The necessary information needed from the GPS is time, latitude, and longitude  The format of the messages is known, allowing the data to be parsed and stored in arrays

12. 12 Electrical and Computer Engineering Converting the GPS coordinates  The user inputs the GPS data in ddmmss.ss format, but NMEA format is ddmm.mmmm  The GPS data is read as chars but a conversion is needed to ints  Once the necessary data casted, the information is converted to Decimal Degrees format, and then to Degrees Minutes Seconds format (DMS)

13. 13 Electrical and Computer Engineering Comparing the GPS coordinates  The GPS coordinates entered by the user are compared to the GPS coordinates found after the conversions  Start latitudes and longitudes are both compared, and when they are equal, a control is sent to display that ad  The control checks the GPS start and end coordinates and decides which ad is to be displayed and which ad is to be replaced

14. 14 Electrical and Computer Engineering Meeting with Brian Lynn Brian Lynn worked on Dieselnet, we met with him and received the following info about PVTA busses: Bus power: 24 VDC (Two 12 V batteries) => 120 AC Dieselnet transformers have at least three available outlets in cabinet behind bus driver Internet connectivity is 88% reliable Dieselnet can share bus route database Power outlets shut off immediately when bus turned off Options: Install small battery Accept immediate shutdown

15. 15 Electrical and Computer Engineering Prototype Hardware  Intel Mini ITX Board  OS: Ubuntu Linux  Hitachi 1 TB Hard Drive  Eventually solid state drive  Memory 1 GB DDR 2  Power Supply  GPS: Garmin 15XW

16. 16 Electrical and Computer Engineering MDR Deliverable  Ability to read GPS coordinates and display different images on LCD  Establish communication between server and client (bus) systems  Website with basic functionality Website allows user to upload advertisement image, select times of display Waiting for full functionality before purchasing domain

17. 17 Electrical and Computer Engineering Next Step  Attach and implement remaining hardware components GPS Antenna Wireless Ethernet card  Make web server able to determine and Identify unique bus routes  Efficiently search MySQL tables and determine upcoming Ads.  Rewrite server socket code in PHP and establish a socket connection between the bus and web server.

18. 18 Electrical and Computer Engineering Team Roles Nicholas - Responsible for retrieving images on the display unit and formatting them to correctly fit the LCD screen Ali - In charge of GPS signal processing and determining the correct advertisement to display. Jeremy - Working on configuring the link between the client (bus) and server. Over TCP/IP this involves using a file transfer protocol to send the correct data to each bus Brian - Responsible for designing the web server, configuring the MySQL database, and writing PHP code to determine the correct data to send to each bus

19. 19 Electrical and Computer Engineering Website – A Primitive Version