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Sensor Nodes. basic part of a sensor network components low-power processor limited memory array of sensors (magnetometer, accelerometer, radar, infrared sensor, microphone, etc.) radio transmitter power source (battery) main constraint – low power

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Sensor nodes
Sensor Nodes

  • basic part of a sensor network

  • components

    • low-power processor

    • limited memory

    • array of sensors (magnetometer, accelerometer, radar, infrared sensor, microphone, etc.)

    • radio transmitter

    • power source (battery)

  • main constraint – low power

    • other constraints – memory, slow processor

  • other characteristics – not mobile, programmable, ad hoc netowork


Prototype networked sensor mote
Prototype Networked Sensor (Mote)

  • 4Mhz, 8bit MCU

  • 512 bytes RAM, 8K ROM

  • 900Mhz Radio

    10-30 ft. range

  • light and other sensors

  • ADC

  • LED outputs

  • serial Port


Other sensor exampls
Other Sensor Exampls

LWIM III

UCLA, 1996

Geophone, RFM

radio, PIC, star

network

AWAIRS I

UCLA/RSC 1998

Geophone, DS/SS

Radio, strongARM,

Multi-hop networks

Sensor Mote

UCB, 2000

RFM radio,

Atmel

Medusa, MK-2

UCLA NESL

2002

  • Predecessors in

  • DARPA Packet Radio program

  • USC-ISI Distributed Sensor Network Project (DSN)


Embedded networked sensing potential
Embedded Networked Sensing Potential

  • Micro-sensors, on-board processing, wireless interfaces feasible at very small scale--can monitor phenomena “up close”

  • Enables spatially and temporally dense environmental monitoring

    Embedded Networked Sensing will reveal previously unobservable phenomena

Ecosystems, Biocomplexity

Contaminant Transport

Marine Microorganisms

Seismic Structure Response


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