P08456: LED Light for an Underwater ROV Jeremy Schiele- ME, Project Manager Jonathan Lent- ME, Housing Design Justin VanSlyke- ME, Mounting Design & Testing Benoit Hennekinne- EE, Electrical Design Ryan Seeber- CE, Control GUI & Programming Funding Provided by:

Project Scope To Design and build a lighting system meant for underwater applications, but capable of being used on land based platforms as well (eg: RP10 projects). The light housing should also be compatible with the thruster unit of P08454, and both be controlled from a single interface. To Design and build a lighting system meant for underwater applications, but capable of being used on land based platforms as well (eg: RP10 projects). The light housing should also be compatible with the thruster unit of P08454, and both be controlled from a single interface.

Project Background Stems from lighting problem Stems from lighting problem faced in original RIT submersible (P06066) Inspiration was to provide RIT Inspiration was to provide RIT & HAI with more cost effective solutions to lighting systems for their products Would enable RIT to expand the scope of regular senior design projects to an underwater environment Would enable RIT to expand the scope of regular senior design projects to an underwater environment

Project Customers Primary Customer: Dresser Rand Primary Customer: Dresser Rand –Investigating underwater technology for future use in oil industry uses –Foresee future engineering needs Secondary Customer: RIT Robotics Platform Secondary Customer: RIT Robotics Platform –Able to utilize lighting system on RP10 & 100 platforms Customer/Advisor: Hydroacoustics Inc. Customer/Advisor: Hydroacoustics Inc. –Contributed background knowledge & belongs to a possible market for future iterations

Primary Requirements Waterproof & Pressure Resistant Design Waterproof & Pressure Resistant Design –ensures survivability of unit High Light Output High Light Output –greater than existing light Low Power Consumption Low Power Consumption –helps prolong onboard battery life Controllable from surface unit Controllable from surface unit –both light and thruster operated simultaneously Modular Housing Design Modular Housing Design –to be shared with thruster unit to minimize # of parts Investigation into multi-spectral lighting Investigation into multi-spectral lighting –Water & its contents absorb/scatter certain wavelengths

Housing Design Iterations Scalable Design Scalable Design –Unique sized parts Modular Designs Modular Designs –Shared portion & defining sections 1) Finned housing 2) Bullet housing

Mounting Design Iterations Hard Mount Design Hard Mount Design –Used for thruster Ball Joint Design Ball Joint Design –Maximum light adjustment

Final Design-Housing & Mounting Modular design Modular design Swivel Mount Swivel Mount

Design Implementation Lens Snap-ring O-Ring Lens Cap O-Ring LED Board Driver Board μC Board Power Board Bullet Housing Bulkhead Connector Standoffs x 9

Final Electrical Design Temp. Sensor LED Driver Power Board Micro- Controller Battery USB Converter User Input G.U.I. LEDs Light Output Signal Feedback Power 24 V 5 V USBRS485 PWM

Final Software & GUI Design

Engineering Specifications Spec.# Design Specification Importance (1 < 5) Unit of Measure MarginalValueIdealValue 1 Low wattage LED system 5 watts/ fixture Low heat generation from LEDs 5 watts/ fixture Luminous flux 5 lumen/ fixture Multi-spectrum light 3NA White+1 color White+2 colors 5 Enclosure size 4 in x in x in 3x3x62x2x4 6 Assembly/Disassembly mount 3sec Microcontroller voltage 4volts Board Voltage 4volts LED Voltage Power 4volts LED Current 5amp Submergible (water tight seals) 5ft Pressure resistant 5psi Preservation of open architecture 4y/nyy 14 Preservation of open source system 4y/nyy 15 Lights & thrusters controlled by 1 software package 5y/nyy Key metrics in bold

Testing Overview Pressure testing conducted at Hydroacoustics Inc. Pressure testing conducted at Hydroacoustics Inc. Timed mounting/removal trials Timed mounting/removal trials Components inherent to design Components inherent to design Luminous Flux test video to follow presentation Luminous Flux test video to follow presentation Method used for luminous flux testing

Testing Verification Spec # Design Specification Marginal Value Testing Result Pass/Fail Spec Met 1 Low wattage LED system 10 W W PASSMarginal 2 Low heat generation from LEDs W (max.) FAILNA 3 Luminous flux 250 lm 510 lm PASSTarget 4 Multi-spectrum light White + 1 color PASSMarginal 5 Enclosure size 3x3x dia. x 4.5 in. PASSMarginal 6 Assembly/Disassembly mount 9020PASSTarget 7 Microcontroller voltage 5 V PASSMarginal 8 Board Voltage 5 V PASSMarginal 9 LED Voltage Power 24 V PASSMarginal 10 LED Current V PASSTarget 11 Submergible (water tight seals) 400 ft 920 ft PASSTarget 12 Pressure resistant 170 psi 400 psi PASSTarget 13 Preservation of open architecture YYPASSTarget 14 Preservation of open source system YYPASSTarget 15 Lights & thrusters controlled by 1 software package Y Y (expected) TBDNA

Projected Budget Cost / LED light unit(4): $ Cost / LED light unit(4): $ Cost / thruster unit (4): $ Cost / thruster unit (4): $ Development board: $ Development board: $ Prototype Unit: $ Prototype Unit: $ Total Light Unit Budget: $ Total Light Unit Budget: $ Allocated to P08454: $ Allocated to P08454: $ Total: $ Total: $

Ending Project Budget Cost / LED light unit(4): $ Cost / LED light unit(4): $ Cost / thruster unit (4): $ Cost / thruster unit (4): $ Development board: $85.80 Development board: $85.80 Prototype Unit: $ Prototype Unit: $ Total Light Unit Budget: $ Total Light Unit Budget: $ Allocated to P08454: $ Allocated to P08454: $ Total: $ Total: $

In Retrospect Mitigate electrical problems Mitigate electrical problems –Allocating more electrical engineers for board development (2 minimum) –Simplifying board design to ease strain on our single electrical engineer Beneficial outcome of LED manuf. problems Beneficial outcome of LED manuf. problems –Two LED styles allows for different company’s models to be used

Future Improvements Try multiple colors of LEDs from Lumileds or Cree Try multiple colors of LEDs from Lumileds or Cree Minimize base housing size/weight Minimize base housing size/weight –Beneficial for both light & thruster unit Look into more compact bulkhead connectors Look into more compact bulkhead connectors Complete anodizing of thruster housing Complete anodizing of thruster housing