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Preliminary Design Report GPS Location System Introduction GPS COMM Group Team Members Adam Preeo Adrian Migacz Andy Merritt Taylor Hughes Adam Preeo Power lab GPS user Project work – Transceiver and LCD Adrian Migacz Only ECE member of the group

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preliminary design report
Preliminary Design Report

GPS Location System

introduction
Introduction
  • GPS COMM Group
    • Team Members
      • Adam Preeo
      • Adrian Migacz
      • Andy Merritt
      • Taylor Hughes
adam preeo
Adam Preeo
  • Power lab
  • GPS user
  • Project work – Transceiver and LCD
adrian migacz
Adrian Migacz
  • Only ECE member of the group
  • Computer Architecture, Programming Languages etc.
  • Enjoys playing sports
andy merritt
Andy Merritt
  • National Center for Atmospheric Research
  • Communication Theory
  • Working on GPS and Transceiver hardware
taylor hughes
Taylor Hughes
  • Work at Avaya in Westminster
    • Software Integration and Testing
    • Database/Web Administrator
    • Testing Automation
  • Familiar with Matlab Software
    • Will be used for some calculations and mapping
function and uses
Handheld GPS unit with a display that communicates with a base station.

Communication and Location technology consolidated into one handheld unit

Group outdoor activities

Outdoor Recreation

Field Research teams

Family vacations

Military Operations

Function and Uses
gps system diagram
GPS System Diagram
  • GPS Unit
  • GPS Receiver
  • Data Translators
  • Transmitter/Receiver
  • LCD Screen
  • Base Station
  • Laptop Computer
  • Data Processor
  • Transmitter/Receiver
field unit diagram
Field Unit Diagram

LCD Screen

GPS Receiver

Data

Translator

Data

Translator

Transmitter

/Receiver

Wireless Link

To Base Station

base station diagram
Base Station Diagram

From Field Unit

To Field Unit

Receiver

Transmitter

Data

Processor

Serial

Connection

Laptop Station

GPS

Receiver

project goals
Project Goals
  • Baseline Goals:
    • Field Unit to Base Station communication
    • Show coordinates, distance, and bearing to the Base Station on the Field unit
  • Extensions:
    • Use Multiple Field units
    • Display multiple locations on Field unit
    • Use graphic display instead of text
division of labor
Division of Labor
  • Laptop Station – Taylor Hughes
  • Data Processor – Adrian Migacz
  • Transmitters/Receivers – Andy Merritt and Adam Preeo
  • Data Translators – Adam Preeo and Adrian Migacz
  • GPS Receivers – Andy Merritt
  • LCD Screens – Taylor Hughes and Adam Preeo
base station diagram13
Base Station Diagram

From Field Unit

To Field Unit

Receiver

Transmitter

Data

Processor

Serial

Connection

Laptop Station

GPS

Receiver

laptop station
Laptop Station
  • Components:
    • Laptop Computer
    • RS232 Serial Connection to Data Processor
    • Delorme Topo Software
    • GPS Receiver (included with Topo Software)
    • Matlab Software
laptop station components
Laptop Station Components
  • Laptop Computer
    • Delorme Topo Software
      • Includes Interface with GPS receiver
      • Used to retrieve GPS coordinates of laptop computer for comparison with those of the Field unit.
laptop station components16
Laptop Station Components
  • Laptop Computer
    • Matlab Software
      • Used for advanced data calculations and triangulation of coordinates.
      • Used for RS232 communications to data processor
      • Used to map relative positions of GPS coordinates
laptop station components17
Laptop Station Components
  • RS232 Interface
    • Connects laptop computer to Data Processor
    • Used to receive coordinates of the field GPS unit from data processor.
    • Used to send calculated data for eventual display on LCD screen on field unit.
base station diagram18
Base Station Diagram

From Field Unit

To Field Unit

Receiver

Transmitter

Data

Processor

Serial

Connection

Laptop Station

GPS

Receiver

data processor
Data Processor
  • Motorola 68000 Processor & Compiler

-used to calculate the distance between two GPS coordinates

-calculate the bearing from North of where the LCD unit is located

field unit diagram20
Field Unit Diagram

LCD Screen

GPS Receiver

Data

Translator

Data

Translator

Transmitter

/Receiver

Wireless Link

To Base Station

data translator
Data Translator
  • Microcontroller for LCD provide “smarts”

-gather data for the LCD so it can display the coordinates

-Motorola HC12 and developing board with memory

base station diagram22
Base Station Diagram

From Field Unit

To Field Unit

Receiver

Transmitter

Data

Processor

Serial

Connection

Laptop Station

GPS

Receiver

field unit diagram23
Field Unit Diagram

LCD Screen

GPS Receiver

Data

Translator

Data

Translator

Transmitter

/Receiver

Wireless Link

To Base Station

transceiver
Transceiver
  • North American Radio Solutions
  • Cost: $40
  • Serial Interface
  • Simple
  • Short range
    • 500m
field unit diagram25
Field Unit Diagram

LCD Screen

GPS Receiver

Data

Translator

Data

Translator

Transmitter

/Receiver

Wireless Link

To Base Station

gps receiver
GPS Receiver
  • Cost: $119
  • Serial Interface
  • Excellent for outdoor environment
    • Urban Canyons
    • Dense Foliage
field unit diagram27
Field Unit Diagram

LCD Screen

GPS Receiver

Data

Translator

Data

Translator

Transmitter

/Receiver

Wireless Link

To Base Station

lcd screen
LCD Screen
  • Crystal fonts – 4x20 Serial Alphanumeric LCD
  • Character only display
  • Serial interface
  • Programmable by any language
  • Scrolling text
  • The Price is Right
risks contingency plans
Risks & Contingency Plans
  • 1. LCD Display (Character vs. Graphics Display)

- ideally use Graphics, else use Character

  • 2. Not being able to configure LCD at all

-use a laptop for the portable unit

  • 3. RF issues - FCC, bandwidth-gain, range
risks contingency cont
Risks & Contingency Cont.
  • 4. Power Issues - portable power supplies for units, battery-powered
  • 5. Problems w/ Interfacing all components

- intermediary components to fix problems

preliminary user s manual
Preliminary User’s Manual
  • Uses
  • Startup directions
  • How to read the display
  • High level description of how the product functions
  • Trouble Shooting section
summary
Summary
  • Function
  • Uses
  • Components
  • Risks
  • What the end user can expect