P08456:P08456:Underwater L.E.D. Light Underwater L.E.D. Light

for an R.O.Vfor an R.O.V

Jeremy SchieleBenoit Hennekinne

Ryan SeeberJonathan Lent

Justin VanSlyke

Light Unit Light Unit ArchitectureArchitecture

User Input G.U.I.

USB Converter

Micro-Controller

LED Driver

Temp. Sensor

Power BoardBattery

LEDs

Light Output

Signal

Feedback

Power

24 V

5 V

USB RS485

PWM

Design ImplementationDesign 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

Design SpecificationsDesign SpecificationsSpec

#Customer

Need #Design Specification

Importance (1 < 5)

Unit of Measure

Marginal Value

Target Value

Final Design Value

1 3 Low wattage LED system 5 watts/ fixture 10 53.30 @ 350 mA (12

max)

2 3Low heat generation from LEDs 5 watts/ fixture 2.8 1

2.41 @ 350mA (7.65 max)

3 1, 2 Luminous flux 5 lumen/ fixture 250 350300 @ 350 mA (675

max)

4 2 Multi-spectrum light 3 NAWhite + 1

colorWhite + 2 colors White + 1 color

5 5, 6 Enclosure size 4 in x in x in 3x3x6 2x2x4 2.75 dia x 4.5

6 6, 7Assembly/Disassembly mount 3 sec 90 60 TBD

7 8 Microcontroller voltage 4 volts 5 3.3 5

8 8 Board Voltage 4 volts 5 3.3 5

9 8 LED Voltage Power 4 volts 24 7.6 24 (driver) 3.15 (LED)

10 1 LED Current 5 amp 1 0.7 1

11 10Submergible (water tight seals) 5 ft 400 500 500 est.

12 10 Pressure resistant 5 psi 170 216 216 est.

13 4Preservation of open architecture 4 y/n y y y

14 9Preservation of open source system 4 y/n y y y

15 8Lights & thrusters controlled by 1 software package

5 y/n y y TBD

Testing ResultsTesting Results

Spec # Design Specification Marginal Value Testing Result Pass/Fail Spec Met

1 Low wattage LED system 10 W 7.004 W PASS Marginal

2 Low heat generation from LEDs 2.8 5.6 W (max.) FAIL NA

3 Luminous flux 250 lm 510 lm PASS Target

4 Multi-spectrum light White + 1 color White + 1 color PASS Marginal

5 Enclosure size 3x3x6 2.75 dia. x 4.5 in. PASS Marginal

6 Assembly/Disassembly mount 90 20 PASS Target

7 Microcontroller voltage 5 V 5 V PASS Marginal

8 Board Voltage 5 V 5 V PASS Marginal

9 LED Voltage Power 24 V 24 V PASS Marginal

10 LED Current 1 0.350 V PASS Target

11 Submergible (water tight seals) 400 ft 920 ft PASS Target

12 Pressure resistant 170 psi 400 psi PASS Target

13 Preservation of open architecture y Y PASS Target

14 Preservation of open source system y Y PASS Target

15Lights & thrusters controlled by 1 software package y Y (expected) TBD NA

Multi-spectral CapabilitiesMulti-spectral Capabilities

Final LED Choices:

Cree XR Cool White

Lucille's Rebel Green

Luminous FluxLuminous Flux

• Tested illuminance (lux), converted to Luminous Flux (lm) using one steradian area.

Radius=20 in.

Steradian= 400 in2

Further TestingFurther Testing

• Final sequences to be completed– Test to assure software is capable of

operating thruster and light unit

Insert GUI Screen Shot Here