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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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