Senior Design Group

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Senior Design Group 10

• Hong Man Faculty/Tech Advisor
• Eddy Naim Group Leader
• John Paul Spiro-Colwell
• Erick Van Haaster
• John M. Di Capua

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ABSTRACT
The scope of this project is to design and build
a mobile wireless car mp3 player (MWMP). The
project will consist of three major components
the home unit, the central processing unit (CPU),
and the front end. The home unit will consist of
the wireless network hub that will interface with
the home computer the CPU will consist of an
embedded computer running Windows 98 and the
front end will consist of an LCD touch screen
panel and the associated software for the user
interface.
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• Car audio systems have been evolving to better
  accommodate the publics needs and desires.

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• The newest trend in the
• automotive sound industry is
• implementing MP3 technology
• into automobiles.

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Current automotive MP3 playershave provided
massive storage capacity ( of songs), but have
failed in three major categories
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Current automotive MP3 playershave provided
massive storage capacity ( of songs), but have
failed in three major categories

• Displays are too small and hard to read.

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Current automotive MP3 playershave provided
massive storage capacity ( of songs), but have
failed in three major categories

• Displays are too small and hard to read.
• Controls require considerable attention from
  driver.

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Current automotive MP3 playershave provided
massive storage capacity ( of songs), but have
failed in three major categories

• Displays are too small and hard to read.
• Controls require considerable attention from
  driver.
• Transferring files to and from the units requires
  significant effort.

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Our design addresses these issues by implementing
the following
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Our design addresses these issues by implementing
the following

• Car unit display is a 6.4 color LCD touch screen
  panel.

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Our design addresses these issues by implementing
the following

• Car unit display is a 6.4 color LCD touch screen
  panel.
• Large, ergonomic function buttons located around
  LCD screen.

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Our design addresses these issues by implementing
the following

• Car unit display is a 6.4 color LCD touch screen
  panel.
• Large, ergonomic function buttons located around
  LCD screen.
• An 802.11 standard wireless network connection to
  your home computer.

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Front End Design Requirements
The front end is the component which the user
will interact with the most, so its design is
critical. Some of the factors we have to take
into account are not only ease of use and
functionality, but also the safety of the driver
and passengers by minimizing driver distraction.
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Front End Design Requirements

• Making interface user-friendly.

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Front End Design Requirements

• Making interface user-friendly.
• Using a 6.4 color LCD Panel Display.

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Front End Design Requirements

• Making interface user-friendly.
• Using a 6.4 color LCD Panel Display.
• Implementing a touch-screen interface.

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Front End Design Requirements

• Making interface user-friendly.
• Using a 6.4 color LCD Panel Display.
• Implementing a touch-screen interface.
• Installing a selective software control lock
  while car is in motion.

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Front End Design Requirements

• Making interface user-friendly.
• Using a 6.4 color LCD Panel Display.
• Implementing a touch-screen interface.
• Installing a selective software control lock
  while car is in motion.
• Including four hardwire buttons for common
  controls (Play/Pause, Stop, Next, Previous).

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Front End Design Requirements

• Limiting Graphical Animations so as to reduce
  driver distraction.

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Front End Design Requirements

• Limiting Graphical Animations so as to reduce
  driver distraction.
• Placing LCD panel in an ergonomic position while
  retaining aesthetics.

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Front End Design Requirements

• Limiting Graphical Animations so as to reduce
  driver distraction.
• Placing LCD panel in an ergonomic position while
  retaining aesthetics.
• Obtain power for unit from a DC-DC ATX Power
  supply run off cars power system.

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CPU Design Requirements
The CPU will be mounted in the trunk of the car
since access to it is not required under normal
operating conditions. It will consist of an
embedded computer, the hard drive, and the
network interface card.
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CPU Design Requirements

• Shock absorbing frame to protect data.

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CPU Design Requirements

• Shock absorbing frame to protect data.
• Rugged enclosure to survive the abuses of being
  mounted in a trunk.

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CPU Design Requirements

• Shock absorbing frame to protect data.
• Rugged enclosure to survive the abuses of being
  mounted in a trunk.
• The unit must be able to operate in temperatures
  from 0 to 85 degrees Celsius.

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CPU Design Requirements

• Shock absorbing frame to protect data.
• Rugged enclosure to survive the abuses of being
  mounted in a trunk.
• The unit must be able to operate in temperatures
  from 0 to 85 degrees Celsius.
• The CPU must have a power saving feature to avoid
  draining a cars battery.

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CPU Design Requirements

• A Wake-On-LAN (WOL) to conserve power. The CPU
  remains dormant until it receives a wake signal
  through wireless connection.

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CPU Design Requirements

• A Wake-On-LAN (WOL) to conserve power. The CPU
  remains dormant until it receives a wake signal
  through wireless connection.
• Large Capacity drive. 20Gb drive could hold
  approximately 5000 songs.

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CPU Design Requirements

• A Wake-On-LAN (WOL) to conserve power. The CPU
  remains dormant until it receives a wake signal
  through wireless connection.
• Large Capacity drive. 20Gb drive could hold
  approximately 5000 songs.
• CPU will obtain power from a DC-DC ATX Power
  Supply.

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Home Unit Design Requirements
The Home Unit consists solely of the wireless
network hub used to communicate with the CPU in
the car. It will use standard windows networking
protocols to ensure compatibility with existing
equipment. This is how songs are added and
deleted from the hard drive in the car.
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Software Design Requirements
The software required by this project consists of
the menu system that the user will be interacting
with.
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Software Design Requirements

• Simple and intuitive graphical user interface.

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Software Design Requirements

• Simple and intuitive graphical user interface.
• Structured for most efficient navigation of songs.

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Software Design Requirements

• Simple and intuitive graphical user interface.
• Structured for most efficient navigation of
  songs.
• Software must limit functionality of system while
  car is in motion.

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Software Design Requirements

• Simple and intuitive graphical user interface.
• Structured for most efficient navigation of
  songs.
• Software must limit functionality of system while
  car is in motion.
• Since the system is essentially a computer, the
  software designed for it governs its limitations.

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System Specifications

• The system will be interface with the existing
  car audio system through an RF modulator. The
  modulator generates a specific FM frequency that
  feeds directly into the head unit antenna jack.
  The user tunes the head unit to the designated
  frequency, and the mp3 signal plays over the
  cars speakers.

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Front End Design Specifications
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Front End Design Specifications

• For the front end, a 6.4 LCD panel was chosen
  because of its viewable screen size as well as
  its physical size. It has adequate viewable
  screen and is an automobile industry standard for
  screen sizes and power options.

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Front End Design Specifications

• The LCD screen will be outfitted with a touch
  screen kit which enables the user to press
  graphical buttons programmed into the screen
  interface.

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Front End Design Specifications

• The four hardwired buttons will consist of
  momentary contact single-pole switches connected
  to a common 5V supply. The system will be
  programmed to accept inputs from the buttons.

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CPU Design Specifications
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CPU Design Specifications

• The CPU will be an Aaeon PCM 6898. It is a
  multi-application embedded media PC capable of
  handling MP3 playback and networking.

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Operating System Specifications

• The PCM-6898 will be configured with
• Windows 98 as the operating system. The user
  interface will not be present, since the only
  software running on the system will be the
  graphical user interface we will code.

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CPU Design Specifications

• The hard drive will be 20 Gb. We have determined
  that this is more than enough storage space for
  the OS and about 5000 songs.

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CPU Design Specifications

• The hard drive will be 20 Gb. We have determined
  that this is more than enough storage space for
  the OS and about 5000 songs.
• There will be a total of 256 Mb of Random Access
  Memory (RAM) for the system functions to ensure
  faultless and lag-free operation.

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Power Specifications

• The ATX power supply will be connected directly
  to the battery to ensure a clean power supply. A
  relay will run to the alternator so that when the
  car is turned off, the system will power down
  normally thanks to the Advanced Power Management
  features of the ATX power supply.

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Wireless Network Specifications

• To connect the PCM-6898 to the home computer, a
  USB wireless network card and a Wireless Access
  Point (WAP) will be used. This USB NIC was
  chosen for relatively long cable lengths, so the
  antenna can be mounted near a window. The
  LinkSys WAP11 has a range of over 300 meters for
  reliable transmission of songs.

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Software Specifications

• LabVIEW will be the programming language used to
  develop the graphical user interface. LabVIEW is
  specifically geared towards the control of
  devices, and is commonly used to create programs
  that control and gather data from laboratory
  instruments.

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Software Specifications

• This is a view of what the GUI will look like.

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Software Specifications

• There will also be a software interlock to make
  our product safer. The computer will detect if
  the car is in motion by means of the parking
  brake to limit the functionality of the system
  while the car is in movement. Simple functions
  like volume control will still be available, but
  more complex functions will be disabled until the
  parking brake is engaged.

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Test Procedure Specifications
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Test Procedure Specifications

• Testing of the components of the system involve
  the following

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Test Procedure Specifications

• Testing of the components of the system involve
  the following
• System enclosure and mounting frame robustness

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Test Procedure Specifications

• Testing of the components of the system involve
  the following
• System enclosure and mounting frame robustness
• Sound Quality

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Test Procedure Specifications

• Testing of the components of the system involve
  the following
• System enclosure and mounting frame robustness
• Sound Quality
• Software Reliability

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Test Procedure Specifications

• Testing of the components of the system involve
  the following
• System enclosure and mounting frame robustness
• Sound Quality
• Software Reliability
• Network transfer rates and reliability

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Test Procedure Specifications

• The enclosure must withstand a certain level of
  abuse from being in the trunk of a car in motion.
  The shock absorbing mounting frame will be
  tested with varying levels of pressure.
  Insulation will also be required to avoid
  damaging to the CPU from temperature extremes.

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Test Procedure Specifications

• Sound Quality will be tested by capturing the
  output of the system to a test computer.
  Specialized software will be used to analyze the
  signal and determine its quality.

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Test Procedure Specifications

• The graphical user interface will be fully tested
  for bugs and other issues after it has been
  coded. The software will continue to be tested
  and re-tested until all bugs have been purged.

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Test Procedure Specifications

• Network transfer rates and reliability will be
  tested using network diagnostic tools readily
  available on the Internet. The transfer rate and
  reliability will depend on the distance between
  the home unit and the mobile CPU. The unit
  should be able to operate soundly with distance
  of over 300 meters.

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Design Risks
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Design Risks

• The risks identified with our design are

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Design Risks

• The risks identified with our design are
• Proper network functionality will greatly depend
  on location of home computer. If it is below
  ground, the network quality will degrade.

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Design Risks

• The risks identified with our design are
• Proper network functionality will greatly depend
  on location of home computer. If it is below
  ground, the network quality will degrade.
• The power use of the mobile system has not been
  determined. Although it will use a sleep mode
  when the car is off, if the car is left still for
  extended periods of time, it may drain the
  battery.

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Budget Breakdown

• We have budgeted cash for the following
  categories

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Budget Breakdown

• We have budgeted cash for the following
  categories
• Materials and Parts

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Budget Breakdown

• We have budgeted cash for the following
  categories
• Materials and Parts
• Labor Costs

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Budget Breakdown

• We have budgeted cash for the following
  categories
• Materials and Parts
• Labor Costs
• Specialized Test Equipment

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Budget Breakdown

• We have budgeted cash for the following
  categories
• Materials and Parts
• Labor Costs
• Specialized Test Equipment
• Travel Documentation

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Materials and Parts Costs

• Materials and parts is a very broad budget, for
  it not only includes the hardware and software
  necessary to build our project, but it also
  includes the costs of any special tools we would
  need. Our total material and parts costs came to
  an estimated 2700. An very detailed breakdown
  of the individual costs is available in our final
  report.

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Labor Costs

• Labor was broken down into six separate fields

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Labor Costs

• Labor was broken down into six separate fields
• Design Brainstorming

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Labor Costs

• Labor was broken down into six separate fields
• Design Brainstorming
• Design Requirements and Standards

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Labor Costs

• Labor was broken down into six separate fields
• Design Brainstorming
• Design Requirements and Standards
• Industry Research

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Labor Costs

• Labor was broken down into six separate fields
• Design Brainstorming
• Design Requirements and Standards
• Industry Research
• Equipment Research

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Labor Costs

• Labor was broken down into six separate fields
• Design Brainstorming
• Design Requirements and Standards
• Industry Research
• Equipment Research
• Financial Planning

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Labor Costs

• Labor was broken down into six separate fields
• Design Brainstorming
• Design Requirements and Standards
• Industry Research
• Equipment Research
• Financial Planning
• Prototype Design

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Labor Costs

• The total cost of labor was arrived at by
  determining the industry pay-scale average, which
  worked out to be 24/hr. A total of 185 hours
  was estimated to complete each of the stages,
  which works out to total labor costs of 4500
  from idea to prototype. A complete breakdown of
  pay-scale derivation and man-hour breakdown is
  also in the final report.

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Test Equipment Costs

• All of the specialized test equipment needed for
  our project was already procured by our group
  before this project. This includes software used
  for sound quality analyzing and network
  diagnostic tools. Since this testing equipment
  was already in our possession, no initial capital
  investment nor training was necessary, keeping
  our test equipment costs very low.

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Travel Documentation Costs

• For our project, there are no necessary
  documentation costs, because there is no
  documentation that needs to be filed. Also,
  travel costs are minimal, and a small sum has
  been budgeted in the even that any travel may be
  required. This leaves travel and documentation
  costs very low.

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Total Budgeted Costs

• After all the separate budget categories are
  tallied up, the total budgeted cost of the
  project is 7100. A full breakdown of the
  individual category costs and the final total
  costs are available in the final report.

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Time Management

• Our group has used Gantt charts as a method of
  proper time management. As shown in the next two
  slides, we have attempted to accurately estimate
  the time necessary to complete the tasks
  associated with each topic. Our topics have been
  broken down into three major categories
  Software, Documentation, and Hardware.

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Conclusion

• This project is based on existing technology,
  support, and documentation, but uses these tools
  to make an innovative product. When the
  prototype is completed, it will be better than
  competitors projects in both ease of use and
  overall system integration.

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Conclusion

• The engineering novelty in this market is the
  much-desired enhancements of products already on
  the market. We believe our product will
  effectively achieve the goals we have laid out
  for it and that a working prototype will be fully
  functional for display next semester.

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• THE END