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SMART DUST K. Pister, J. Kahn, B. Boser (UCB) S. Morris (MLB) MEMS MTO


Goals Autonomous sensor node (mote) in 1 mm3 MAV delivery Thousands of motes Many interrogators Demonstrate useful/complex integration in 1 mm3

COTS Dust: 

COTS Dust GOALS: Create a network of sensors Explore system design issues Provide a platform to test Dust components Use off the shelf components

COTS Dust - RF Motes: 

COTS Dust - RF Motes Atmel Microprocessor RF Monolithics transceiver 916MHz, ~20m range, 4800 bps 1 week fully active, 2 yr @1%

COTS Dust - Distributed Algorithms: 

COTS Dust - Distributed Algorithms 1', $100 Sensor nodes are easy algorithms?

COTS Dust - Optical Motes: 

COTS Dust - Optical Motes Laser mote 650nm laser pointer 2 day life full duty CCR mote 4 corner cubes 40% hemisphere

CCR Interogator: 

CCR Interogator

Video Semaphore Decoding: 

Video Semaphore Decoding Diverged beam @ 300m Shadow or full sunlight San Francisco (Coit Tower) to Berkeley (Cory Hall)

1 Mbps CMOS imaging receiver: 

1 Mbps CMOS imaging receiver Put an asynchronous receiver at every pixel Funded by DARPA/MTO/STAB 0.25 um CMOS in fab

Micro Mote - First Attempt: 

Micro Mote - First Attempt

2D beam scanning: 

2D beam scanning

6-bit DAC Driving Scanning Mirror: 

6-bit DAC Driving Scanning Mirror Open loop control Insensitive to disturbance Potentially low power

~8mm3 laser scanner: 

~8mm3 laser scanner Two 4-bit mechanical DACs control mirror scan angles. ~6 degrees azimuth, 3 elevation

Power and Energy: 

Power and Energy Sources Solar cells Combustion/Thermopiles Storage Batteries ~1 J/mm3 Capacitors ~1 mJ/mm3 Usage Digital control: nJ/instruction Analog circuitry: nJ/sample Communication: nJ/bit


Combustion Solid rocket propellant integrated igniter thermoelectric generator

Dust Delivery: 

Dust Delivery Silicon maple seeds Silicon dandelions

MAV Delivery: 

MAV Delivery 60 mph 18 min 1 mi comm Built by MLB Co. 6' 8'

24” Bat: 

24' Bat 40 mph top speed 30 minute loiter autopilot: pressure sensor, gyros, XLs 2 planes, 1 ground station, in 1 suitcase

Marine LOE 4: 

Marine LOE 4 3 MAVs participated, 1 flew 7 sorties on station in minutes

Goal for ‘01: 

Goal for ‘01

Virtual Keyboard: 

Virtual Keyboard

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