ECE415 Senior Design Project Spring 2009

FPR PresentationRobert Basile

Rowan OberskiQiaowen Zheng

Danxiang Li

Faculty Advisor: Russell Tessier

Enjoy The Wait

2ECE415 Senior Design Project Spring 2009

Problem

Waiting in a restaurant is not enjoyable:• Boring

• Inefficient• Wait for table then wait for food

• Limited Interaction• Too many people around to talk private

• Reason to leave

3ECE415 Senior Design Project Spring 2009

Solution

Create a system which allows • The customer to:

• Stay entertained• Interact in a new fun way with all other patrons• Obtain updated wait information w/o getting up

• The business to:• Encourage customers to return• Have an edge over competitors• Improve overall restaurant efficiency

4ECE415 Senior Design Project Spring 2009

Solution

A Two Piece System: • A client side handheld unit consisting

of:• 3.4" LCD • Touch Screen Display• Wireless capabilities• A user friendly software interface

• A server side software client:• PC based• Fulfill client handheld requests• Interact with local restaurant

network• Manage multiple users

simultaneously

5ECE415 Senior Design Project Spring 2009

Block Diagram

6ECE415 Senior Design Project Spring 2009

Work Breakdown

Server: • Back: Robert Basile• GUI: Robert Basile

Client: • Back: Rowan Oberski• GUI: Dan Li

Windows CE • Platform Builder: Dan Li & Robert Basile

Hardware: • PCB: Q Zheng• Component Selection: Q Zheng

7ECE415 Senior Design Project Spring 2009

Server Screenshot

8ECE415 Senior Design Project Spring 2009

Server Class Flow Diagram

9ECE415 Senior Design Project Spring 2009

Server Software Code

Approximately 1550 lines• GUI: ~650 Lines• Server: ~900 Lines• 10 Classes

Separate Thread for each connected HandHeld• Java ServerSocket

Prompt System Response• 20 Clients simultaneously • Tested with script

10ECE415 Senior Design Project Spring 2009

Client Screenshots

Need More Screen Shots

11ECE415 Senior Design Project Spring 2009

Hand Held Class Diagram

12ECE415 Senior Design Project Spring 2009

HandHeld Software Code

Approximately 1500 lines• 7 Screens, 10 Classes• OOP, Separation of Presentation from Logic

Multi-threaded to Maintain Responsive GUI at All Times• Worker Threads for all I/O and Networking• Screen Navigation Control • Exception Handling

13ECE415 Senior Design Project Spring 2009

System Scalability

802.11 Limitations• Router

• ~250 Clients (Ideal)• Roughly 300 foot Range

Standard Computer• JVM allocates 1000+ Threads

• NEED MORE INFO

14ECE415 Senior Design Project Spring 2009

PCB Motivation

Limit PCB to only “necessary” features• Mini2440-I Processor Card• Serial port (UART)• USB Device port• LCD connection

Reduce Cost• SDK board ~ $259• Our PCB ~ $60

Reduce Power Consumption

15ECE415 Senior Design Project Spring 2009

Hardware Operating Specs

Overall Board• 5V • Up to ~2.2W

• Dev Board ~3.3W

VT6656 USB Wireless 802.11g• Active Mode

• 3.3V : 259mA : 854.7mW • Standby

• 3.3V : 384uA : 1.267mW

LCD Screen• 5V : 190mA : 950mW

16ECE415 Senior Design Project Spring 2009

Our PCB Design

Need Picture of Our Board

17ECE415 Senior Design Project Spring 2009

Problems/Solutions Hardware Design

Synchronizing Different Clock Frequencies• Daughter Card: 300MHz• USB 12 MHz

Need More Info

18ECE415 Senior Design Project Spring 2009

Wrap Up

• Success:• All Software Completed & Fully operational• Good Scalability• 2 Handhelds communicating• Hardware Booting Linux

• Communicating via Hyper Terminal

• Short Comings:• Not Battery Powered• Wireless not built in.

• Future Enhancements• Web based • Skinning for HandHeld