ECE415 Senior Design Project Fall 2008 CDR Presentation Robert Basile Rowan Oberski Qiaowen Zheng...

ECE415 Senior Design Project Fall 2008

CDR PresentationRobert Basile

Rowan OberskiQiaowen Zheng

Danxiang Li

Faculty Advisor: Russell Tessier

Enjoy The Wait

2ECE415 Senior Design Project Fall 2008

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


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


Solution

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

of:• 4.3" 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


Software/Use Features

Customer:• At initial screen the user is presented different options:

• View menu • Pre-order their meal • View updated wait time • Turn on gaming mode

• Tic Tac Toe, Holdem Poker, etc…

Restaurant:• Server client’s features:

• Notify table status• Update wait times• Process Orders


Block Diagram


Platforms

Client:• C#• .NET Compact Framework

Version 2.0

Server:• Java

Networking:• IEEE 802.11b


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


Proposed CDR Deliverables

Handheld Unit:• Working user interface with GUI• Receive “table-ready” notification• Check remaining wait time• Download Menu• Place pre-orders• Enter game mode

Server:• Accept incoming user communication• Handle user requests• Store Orders• Notify user table is ready


Actual CDR Deliverables

Server Back• 80% complete• Tic-Tac-Toe implemented

Server Gui• 70% complete

Client • 75% complete• Wireless Networking• Our own board design


Server Screenshot


Queuing Theory

Three most important characteristics of a queuing system Arrival Process Service Process Number of Servers

ETW Addresses the Service Process

Little’s Theorem: N = λT


OPCode Commands

HELLO MENU ORDER GAME HAND TIME BYE ETC…


Sample Command

String to be sent between Server/Client “Enter Game Mode” sample command:

• TICTAC+(Gamechoice)+(Pub/Priv)+(X)+(Y)+/r

“Menu Pre-Order” sample command:• MENU+ORDER+(Item#)+(Quantity)+/r


Hand Held Class Diagram


Client Screenshot


Chip Specs

Samsung S3C2440A • ARM920T Core

• Up to 400MHz

• On-chip clock generator

• LCD Controller

• Interrupt Controller• Variable Power Mode


CPU Block diagram


UTU2440-S Development Kit


Dev Board

SDRAM- 64M SDRAM - 32bit DataBus - SDRAM Clock 100MHz

Flash- 64M Nand Flash,- 2M Nor Flash,BIOS installed

System Clock- 12MHz

RTC - Internal

Expand Interface- 1 34 pin 2.0mm GPIO - 1 44 pin 2.0mm System Bus

Dimension- 120 x 100(mm)

OS Support - Linux 2.6.13 - Windows CE.Net 4.2/5.0

Interface and Resource - 1 10M Ethernet RJ-45(CS8900) - 3 Serial Port - 1 USB Host - 1 USB Slave Type B - 1 SD Card Interface - 1 Steoro Audio out?1 Micro In? - 1 20 pinJTAG - 4 USER LEDs - 4 USER buttons - 1 PWM Beeper - 1 POT used for A/D converter adjust - 1 AT24C08 forI2C test - 1 20pin Camera Interface - 1 Battery for RTC- Power In(12V), with switch and lamp


PCB Motivation


Our PCB Features


PCB Design


Power

Quantity Component Component Number Supply Voltage (V) Max Current (mA) Max Power (mW)

1 TFT LCD Module LTE430WQ-F0C 3.3 25 82.5

2 LCD connector DF9-41S-1V 3.3 50 700

1 Microcontroller S3C2440AL-40 3.3 200 600

2 64MB (16Mx16)SDRAM HY57V561620FTP-H 3.3 300 1000

1 EEPROMs for smart card 24C02 3.3 5 16.5

2 3 chan UART (need DB9 conn) MAX3232EEAE 3.3 60 396

2 USB 802.11 VT6656 3.3 Transmit: < 350mA. 1155

Receive: < 270mA. 891

TOTAL POWER: 4841

~(4.9W)


Proposed FPR Deliverables

Completion of Server & Hand Held Software

Design documentation and specifications

Proper use instructions

PCB Design and Test Board


Wrap Up

• All accomplishable goals met• Difficulties with product ordering• Overambitious Board Design

ECE415 Senior Design Project Fall 2008 CDR Presentation Robert Basile Rowan Oberski Qiaowen Zheng...

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