Team WEOP (Wireless Entertainment

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Team WEOP(Wireless Entertainment Ordering
Pager)

• ECE 4007 L03
• Preliminary Design Review Presentation

Team Members Earl Cuenca Alex
Groleau Kirk Poucher Omar Sardar
Advisor Dr. Smith
School of Electrical and Computer
Engineering Georgia Institute of Technology
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Project Objective s

• Develop interactive paging system
• Touchscreen pager devices
• Versatile application modules
• 802.11b/g wireless
• Communication framework
• Server
• Terminal Displays

October 18, 2007
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Customer Benefits

• Enhance ordering process and overall customer
  satisfaction
• Increase revenue via advertising
• Internal advertisements (impulsive)
• External advertisements (local businesses)
• Unite current service systems

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End-User Benefits

• Provide entertainment during wait time
• Order appetizers, drinks, etc. wirelessly
• Display bill, handle tipping, payment
• Enhanced service environment interaction

October 18, 2007
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Potential Customers

• Restaurants
• Hotels
• Hospitals
• Bars Clubs
• Airlines

October 18, 2007
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WEOP System Design
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Cost Overview
Components Prototype Cost
Single Board Computer 230.00
Touch LCD Kit 150.00
Windows XP/CE Embedded 1.00
Casing 30.00
Misc. cable/connectors 15.00
Rechargeable batteries 50.00
Total 486.00
Estimated Selling Price (per unit)
350.00

• Basic WEOP System Price - 4000
• 10 Interactive pagers
• 1 Charging Rack
• Basic software application modules
• Assumes existing server, wireless network, and
  optional terminal displays
• Additional devices and applications for sale

October 18, 2007
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Pager Device Production Specs

• Physical Size 3.5 x 3.5 x 1.5
• Battery Life 3.5 Hours (per charge)
• Wireless Range 250 ft (from access point)
• Weight 20 ounces
• Memory 1 GB

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Pager Device Prototype Goals

• Physical Size 7.5 x 7.5 x 3.5
• Operable on battery power
• Functional communication between device and
  server
• Complete software package
• Battery charging operation

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Pager Device Design
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VIA EPIA PX10000G Pico-ITX
October 18, 2007
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LCD Touchscreen

• LCD35VGATS (lcdtft.com)
• 3.5 Touch Screen
• 12V DC source
• Integrated LED backlight
• Resolution 640 x 480

October 18, 2007
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Pager Device Power Schematic
October 18, 2007
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Pager Device Power Supply

• MAX 1873
• Current Limited Li-ion charger controller
• Up to 26V input voltage
• 2-, 3-, or 4-cell Li-ion battery charger
• Adjustable battery regulation voltage limit

October 18, 2007
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Pager Device Power Supply

• picoPSU-120-WIR
• 12V to 32V wide input DC-DC ATX power supply
• Provides 100W/120W peak of power
• 100 silent, fanless

October 18, 2007
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Pager Device Power Regulator

• MAXIM Linear Regulator MAX1658/MAX16595
• 2.7V to 16.5V Wide Input Voltage Range
• Adjustable 1.25V to 16V output
• High output current 350mA
• Reverse Battery Protection

October 18, 2007
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Software Development

• Visual Studio 2005
• Microsoft .Net Compact Framework
• Windows XP Embedded
• AnkhSVN Subversion repository
• Java coding standards
• Significant unit testing
• C programming language
• Device virtualization

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Communication Framework

• Manages communication between pager devices,
  terminal displays, and server
• Fat server, thin client construction
• Distributed software modules
• Most operations handled on server
• Terminal displays also function as clients
• 3rd party system integration plugins

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Server Functionality

• Manage terminal displays
• Add/remove pagers from system
• Add/remove application modules on pagers
• Manage global and module settings
• View/edit current and pending operations

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Pager Menu and Interface
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Pager Menu and Interface
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Pager Menu and Interface
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Pager Menu and Interface
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Current Status and Restraints

• SBC unit, PSU has been ordered
• Narrowing LCD options
• Hard to get in touch with manufacturers
• Budget concerns
• Developing software applications
• Determining power management options
• LCDs consume a lot of power
• Charging controller and battery

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Future Work

• Develop stack-type charging system
• Design more compact computing system
• Create water/shock-proof casing

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• Questions?