K. Pister, J. Kahn, B. Boser (UCB) S. Morris (MLB)

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Presentation transcript:

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

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

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 Atmel Microprocessor RF Monolithics transceiver 916MHz, ~20m range, 4800 bps 1 week fully active, 2 yr @1% N S E W 2 Axis Magnetic Sensor 2 Axis Accelerometer Light Intensity Sensor Humidity Sensor Pressure Sensor Temperature Sensor

COTS Dust - Network Simulation Cheap platforms --> Lots of nodes --> Network challenges!

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

CCR Interogator

Video Semaphore Decoding Diverged beam @ 5.2 km In shadow in evening sun Diverged beam @ 300m Shadow or full sunlight

1 Mbps CMOS imaging receiver

Optical Communication (vs. RF) Pro: low power small aperture spatial division multiplexing high data rates LPI/LPD baseband coding Con: line of sight atmospheric turbulence

Turbulent Channel

Micro Mote - First Attempt

2D beam scanning laser lens CMOS ASIC Steering Mirror AR coated dome

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

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

Dust Delivery Floaters Autorotators Rockets MAVs solar cells thermopiles MAVs MOTE

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

Applications DoD Civilian Battlefield sensor networks Sensor mine-fields, burrs and fleas Traffic mapping Captured terrain surveillance Bunker mapping ... Civilian High speed/low power IRDA Interactive virtual ballet ...