Wade Pentz Blake Orth Grant Fritz Andrew Gunn Brian Weinstein

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TRI-ADSTargeted Remote Information and
Advertisement Distribution System

• Wade PentzBlake OrthGrant FritzAndrew
  GunnBrian Weinstein

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System Overview

• Network of targeted advertisement display modules
• Change display based on location, time of day,
  weather, emergency status, etc
• Provide standard DVI output
• Modules communicate wirelessly with a base
  station
• Powered from 12V DC wall adapter or car outlet

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System Overview
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• GPS data processing
• LCD display
• GPS based image change

Primary

• WiFi communication
• Base station

Secondary

• Universal power board
• Second module
• Analog sensors
• Bluetooth
• Base station GUI
• Packaging
• Animation

Tertiary
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Level 0 Functional Decomposition
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Level 1Hardware Functional Decomposition
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Command and Data Handling System Overview

• Coordinate DVI output with CPLD and load image
  off of SD card
• Store GPS location and coordinate ad changes
• Manage Wifi/3G link and remote update
• Manage Bluetooth communications between display
  modules
• Gather temperature/accelerometer data and
  coordinate ad changes

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CDH Functional Decomposition
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Command and Data Handling System Hardware

• Using NGW-100 as main board
• AT32AP7000 microprocessor
• 2.6 Linux Kernel
• Resource Management
• Modular process software design
• Utilize standard libraries

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Software Functional Diagram
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CDH Software Functional Decomposition
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Level 1 Software Decomposition
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CDH SFT Functional Decomposition
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Display System Overview

• Use DVI for easy interface to screens of various
  sizes
• DVI prioritized over VGA to allow for future
  expandability
• Custom display hardware will allow for a simple
  embedded solution
• Removes the need to interface and power a full
  rendering graphics card
• Current image stored to on-board SRAM for fast
  access
• Will be implemented using TFP410 DVI Trasmitter,
  Altera MaxII CPLD and 6MB SRAM

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Display Functional Decomposition
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CPLD

• Programmed using Verilog through JTAG
• Clocked at 165MHz
• Takes care of all Video memory Operations
• Reads pixel data from SRAM chips and presents it
  at 24-bit DVI chip input
• Write new image data to SRAM chips
• Receives new image data from the microcontroller
  via SPI
• Manage all SRAM and DVI control lines

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EPM570T144C5N

• Max II 570 Series 144-TQFP
• Selected for fast pin-to-pin propagation delay (
  down to 4.5ns)
• 440 macro-cells allows for reasonably complex
  logic
• Good performance for current draw at most draws
  250mA
• Development board being used to develop Verilog
  code

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Display System Hardware

• Use TI TFP410 PanelBus DVI Transmitter

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TI TFP410 DVI Transmitter

• Basic configuration through I2C
• Allows settings for resolution, DE generator, and
  data de-skew
• Takes 24-bit True Color pixel data and control
  signals
• Encodes and serializes pixel data to PanelBus DVI
  and outputs to a standard Single Link DVI
  Connector

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SRAM

• Stores current image data (1 image)
• 24-bit True Color for each pixel
• 8-bits for each color part (RGB)
• Three SRAM units will be used
• RGB pixel data stored in parallel
• One unit for each color
• Shared 20-bit address bus
• All parts of a single pixel will have a shared
  address
• Shared 8-bit data bus
• Bus control handled with output/write enable pins

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SRAM Selection

• ISSI IS61WV102416
• 1M x 16b SRAM
• 8 ns access time
• Using 3 modules totals to 6MB of storage

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SRAM Modes

• SRAM has ability for 16-bit data bus
• We are using in 8-bit data bus mode
• 20-bit address selects a 16-bit word
• Uses /LB and /UB pins to select upper or lower
  byte

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Read Cycle Timing Diagram
Notes - Upper/Lower byte selection control pins
not shown here - /CE will be tied
active
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COM Functional Decomposition
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GPS

• Primary Objective
• GPS location used to provide optimal
  advertisement
• RS232 Interface
• GPS Handler script
• Input a character string
• Outputs global variables taken from the char
  string

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GPS Handler

• GPGGA,184149.00,4000.43877,N,10515.72492,W,1,05,1
  .68,01633,M,-020,M,,5C
• Type GPGGA
• Time 18hr 41min 49secs Zulu Time
• 4000.43877 North Latitude
• 10515.72492 West Longitude
• GPS Quality 0No GPS, 1GPS, 2DGPS
• Number of Satellites 5
• Altitude in Meters 01633

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GPS

• Status Update
• Full Circle Fully Functional
• GPS Module Receives Data From Satellites
• Microprocessor Receives Data String
• GPS Handler Parses Saves Information
• Where From Here
• Implement Position Logic
• If in this Location -gt Display This Ad

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Wifi

• Used to update the Display Module with new
  advertisements information
• Initial Wifly utilizes telnet exclusively
• Telnet is completely unsecure
• Telnet is Great for sending small strings across
  local network but not so great at sending large
  files over internet.
• Breakdown, Encrypt, Pack, Transmit, Decrypt,
  Unpack
• In addition to writing the serial and wifi
  drivers

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Wiport Wifi Module

• Interface RS 232 to UART or Ethernet
• Wiport - Breakdown, Encrypt, Pack, Transmit,
  Decrypt, Unpack
• Serial and Wifi Drivers
• Wifi Software
• Input a character string to change networks
• Outputs information or files through Ethernet

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Bluetooth

• Tertiary objective
• RS232 thus we can reuse serial driver from GPS
• Milestone 2 objective
• Overall COM Board
• Connects module headers to board stacks
• Board Designed in Altium in progress

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Power Functional Decomposition
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Power System

• Each board has its own power stage
• Allows each board to be tested separately
• Uses linear regulator to provide needed voltage
  rails
• All ICs use 3.3V
• If time allows, a power board will be created
• Route IC power
• Provide DVI display power using boost converter

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Power Stage

• Power switch for each board
• Bridge rectifier IC (DF10S)
• 1.5 Amp average current rating
• 1.1 Volt forward drop
• LM317 adjustable linear regulator
• 1.5 Amp average current rating
• Uses voltage divider to set output voltage
• Extremely accurate regulation
• Additional protection diodes

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Power Stage
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LM317 Linear Regulator Circuit
For 3.3V R1 220 Ohms R2 330 Ohms
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Base Station
Hi Res. Display
Outbox
Base Station Image_handler
Ad Uploaded

• Current Status
• Image_Handler
• Converts input to JPG
• Multiple Copies based on Resolution
• Places in Outbox
• Auto SSH with RSA
• Pushing configurations images to display units
• Where we want to go
• Optimize and increase functionality
• GUI if time allows

Low Res. Display
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Milestone 1
Milestone 2
System
CDH
CDH

• Serial Driver
• I2C Driver
• GPS Driver
• Wifi Driver
• Skeleton framework

• CPLD SPI interface
• JPEG conversion and display
• Wireless image download

Display
Display

• Board populated
• CPLD programmable
• Initial CPLD code written
• Write to and read from SRAM

• Interface with DVI chip
• Update image based on location

Comm
COM

• Bluetooth working
• Receive image updates through wifi
• Send updates to basestation

• Wifi working
• GPS working
• Board populated

Power
Power

• Individual board power functional

• Power board (tentative)

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Expo

• Complete system working
• Display images through DVI
• Change images based on location
• All devices talking with CDH
• Full communication with base station over
  wireless
• Bluetooth communication functional
• Power board if necessary and time allows
• Second module if time allows
• Users manual

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Division of Labor
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Schedule
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Schedule Highlights

• CPLD Code Development Begins
• Goal Monday February 28th
• Order Display and Com Boards
• Goal March 1st
• Schedule Multitasking and Dependencies
• Integration of Hardware and Software

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Budget
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Risk Management

• (303) 55-RILEY

Risk
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Questions?

• Thank you!