One year ago …

“Collaboration is the key to success”

SeptemberOctoberNovemberDecemberJanuaryFebruaryMarchAprilMayJuneJuly

Complementary activities

Contact regarding a joint testDesignManufacturingField deploymentRedesign & manufacturingLab testingRedeploymentField testing

MIT Media Lab

UH

ComputerRadioNetwork Software

EnclosuresSensorsPowerField Site (Study Problem)

TephraNet

PODS

Kilauea Crater

Halemaumau

Hawaii VolcanoesObservatory

SouthwestRift Zone

Hawaii VolcanoesNational Park

Chain of Craters Highway

SW Rift Zone

Rainfall Gradient

Desert

Rainforest

Silene Study Area

Hawaii VolcanoesObservatory

Southwest Rift Zone

Silene hawaiiensis

temperature

humidity

light

wind (bend)

Computer& Radio

Batteries

Rock Enclosures

Internal: voltage

Michael Lurvey

Inner mold: Latex & gauze

Outer mold: Plaster of Paris

Casting: pretinted “bondo”

rockmaker

MIT TephraNetMIT TephraNet

Silene Study Area

Hawaii VolcanoesObservatory

Southwest Rift Zone

300 feet

100 feet

6 to 10 feet

`Ohia BranchEnclosures

temperature

light

Batteries

Computer& Radio

foam spacer

6” PVC pipeLaser-printed textureWaterproof spray coating“Bondo” caps

6” PVC pipeLaser-printed textureWaterproof spray coating“Bondo” caps

Battery Pack SpacersBattery Pack Spacers

comm distance

Deployment Layout

Redundancy considerations

Transmission directions

Deployment PositioningDeployment Positioning

Wide Area Augmentation ServiceWide Area Augmentation ServiceAccuracy ~20 feet Accuracy ~20 feet

Silenehawaiiensis

FieldDeployment

HawaiiVolcanoesObservatory

Recent LessonsRecent Lessons

Keep it small!Keep it small!

Manufacturing, shipping, deploymentManufacturing, shipping, deployment

Working against a deadline is important

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March 2001

Multiple designs provide flexibilityMultiple designs provide flexibility

Plan on maintaining a rich development environment… right up to the end

Plan on maintaining a rich development environment… right up to the end

Large numbers require special planningLarge numbers require special planning

You need a good support teamYou need a good support team

Collaboration pushed a prototype into a system

Using a real problem added great focus

University of Hawaii

Network simulations

802.11 communications

Enclosure design and facrication

Sensor design

Camera testing and deployment

Remote node administration