Friday, June 24, 2005

Subsystems of RunderBot (tm)

  • Balancing system
    • Can't have deep hull or would not be able to rest on ocean floor to get close to subject matter.
  • Mobility System
    • Drivetrain system
      • Motors
      • Linkage
        • Durability (exposed element)
      • Controllers
      • Controller logic
    • Wheels
      • Size
      • Attachment
      • Weigh, Density, Durability (exposed element)
  • Drum
    • Crush depth
    • Specifications
      • Capacity = 55 gal
      • Diameter = 23"
      • Height = 36"
      • Weight = 26 lbs
      • Volume = 14,957.15 in^3
      • Volumne = 8.65 ft^3
        • V = .7854 * d^2 * h
        • or V = 3.1416 * r^2 * h
        • 1 cubic feet = 1728 cubic inches (12 * 12 * 12)

    • Closure
    • Weight
      • Alone
      • Loaded
    • Internal cubic feet
    • Ballast requirements
    • Camera mounting locations.
      • Cameras are protected via metal "brush guards"
    • Drum shall not be punctured other than tether points.
      • May not be possible for drive train. May need separate drive train module to attach to bottom.
        • Prevents puncturing of barrel.
        • Can be swapped out / upgraded / repaired.
  • Computer control system
    • Power source and consumption
    • Controller Type
      • Computer (low power desktop)
        • Built in 801.x support
        • Built in network port (RJ45)
        • Built in modem port
        • Great debugging, rapid development, already know the system
      • PIC microcontroller not an option as the main system because of camera and other wireless features.
    • Communication capability.
      • Will use CAT5 physical tether cable because wireless connection is not trustworthy for distance in the open
        • Fast Ethernet, 100baseT
          Speed: 100 Mbps
          Max Length: 100 Meters
          Cable: UTP, RJ-45 connectors

          Twisted Pair Ethernet, 10baseT
          Speed: 10 Mbps
          Max Length: 100 Meters
          Cable: UTP, RJ-45 connectors
      • Cell phone
        • Standard dialup modem hookup for terminal services if 801.x fails or if cell phone has better reception / calling / distance capabilities.
    • Failsafe (from crash)
    • Datalogging capabilities
    • Input / output
      • Labjack USB input / output
        • Provides 32 digital io
        • 5 analog in
        • 2 analog out
  • Camera System
    • 2 Logitech Orbital Cams
      • Compusa
        • http://www.compusa.com/products/product_info.asp?product_code=307618&pfp=srch1
      • Mounted outside of drum due to restraint of not puncturing drum
      • USB2
      • Sealed in acrylic orb or something similiar to prevent water and pressure damage
  • Pressurization system
    • Air tank keeps compressed air. When need it pulls compressed out air and pushes into cabin to equalize pressure as needed.
    • Air pumps
    • Solenoids
    • Regulator
  • Lighting
    • Million candlepower lights
      • Battery separated from bulb and reflector
    • High Intensity LEDs around camera
    • Lights follow camera or vice versa
  • Tether opening system
    • Supplies power
      • Drive motors
      • Pan and tilt of orbit cams
    • Recharging opening
      • Solar
      • Direct (i.e. from car)
    • USB camera cables
  • Barrel closure system
    • Bolt clamp system
  • Bilge system
    • Water stored in sub tank
      • Dimensions
      • Capacity
      • Empty weight
      • Filled weight
    • Pumps and motors
    • Tubing
    • Electrical monitoring and control system
      • Analog float valme for monitoring capacity.
  • Ballast system
    • Additional ballast required to sink 55 gallon drum
  • Facts and figures
    • Principles of pressure at depth
    • Ballast requirements for air, weight, water density, temperature

  • Battery system
    • Voltages
    • Amps available
    • Amp hours available
    • Cell count
    • Recharging
      • Solar
      • Direct
    • Ventilation of cells during charging cycle.
  • Software
    • Client server
    • Web cam capability over 801.x
    • Web cam still photos to archive and transmission
    • Ability to reboot
    • GetCurrentSettingValue (ENUM_SETTING_XYZ)
    • ResetStats()
    • Reboot()
    • GetAllSettings()
    • Report()
    • GetDepth()
    • GetLatLongLocation()
    • SetLatLongLocation()
    • Surface()
    • StopAllCommands()
    • HoldPosition()
    • Status()
    • GetHeading()

  • Direction Finding
    • USB GPS module
      • If compass heading model available. Take that one else buy the separate USB compass.
    • USB Compass Heading Capability
  • Sound recording capability
    • Sounds of surf, whales, etc..
    • Sound playback over network
  • Manually control
    • Joystick on base computer is read via directx
    • Signals are sent to RunderBot client
  • Tether retrieval system
    • DC motor spools in / out cable based on either manual input or spring loaded resistance.
    • When tension exists, cable released
    • When slack, cable retrieved until tension retrieval threshold met.
    • The tension at which more cable is released and the tension that cable is pulled into are independently adjustable at the base station.

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