Applications of Wireless Sensor Networks

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Applications of Wireless Sensor Networks
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Introduction

• Wireless Sensor Networks
• Sensor Node Components
• Applications
• WSNs vs. MANETs
• Issues in WSNs

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Wireless Sensor Networks (WSNs)
Introduction
sink
sensor nodes
sensor field
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Sensor Node Components
Introduction
Location Finding System
Mobilizer
Sensing Unit
Processing Unit
Sensor
ADC
Transceiver
Processor
Storage
Power Unit
Power Generator
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Sensor Node Main Tasks
Introduction
communication
processing storage
sensing
Sensor
ADC
Transceiver
Processor
Storage
powersupport
Power Unit
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Sensor Node Characteristics
Introduction

• Low cost
• Low power
• Small size
• Short communication distance

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Introduction
MICA2 Dot
MICA2
MICAz (Zigbee)
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Mote Hardware

• Programming Board

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Mote Hardware

• MICA2

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MICA2, MICA2DOT Connectivity
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Applications of WSNs
Introduction

• Industrial control monitoring
• Home automation consumer electronics
• Security military surveillance
• Environmental sensing
• Health care

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Military surveillance
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Habitat Monitoring on Great Duck Island
Leach's Storm Petrel

• http//www.greatduckisland.net/
• Intel Research Laboratory at Berkeley
• Temperature, humidity, barometric pressure,
  mid-range infrared, and image.

Great Duck Island, Maine
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S.Sense Wireless Sensors
Introduction

• http//www.digitalsun.com/index.html
• Digital Sun, Inc.
• A soil moisture sensor system to keep grass green
  while saving water

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Bridges Building Monitoring
Introduction

• http//www.senera.com/
• Senera Corp.
• Wireless infrastructure monitoring services for
  transportation and building infrastructures
• (89.8.27) ??????

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Introduction
Sensor Network-Based Countersniper System
(ACM SenSys 2004)
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CMU Millibots
Introduction

• Modularity - modularity in sensing, processing
  and mobility allows dynamic configuration based
  on task
• Localization - The team needs to be able to track
  its position even in the presence of errors
• Team Architecture - An architecture is needed to
  coordinate movement and collect sensor
  information
• Self Repair - The team can detect failures and
  fix themselves in the field

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Healthy Monitoring
Introduction

• Gather data to infer activities of daily living
• Give clues to a persons state of health
• Monitor patients with dementia and other ills of
  aging
• Detect early signs of disease and prevent its
  progression

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Introduction
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Health careA Body-Monitoring System with EEG and
EOG Sensors
Introduction

• four students from the Slovak University of
  Technology in Bratislava (in Czech)
• won third prize at the annual IEEE Computer
  Society International Design Competition (CSIDC
  2002) World Finals

http//www.ercim.org/publication/Ercim_News/enw51/
bielikova.html
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Home automation
Introduction
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WSNs vs. MANETs
Introduction

• The number of sensors can be several orders of
  magnitude higher than the nodes in an ad-hoc
  network
• Sensor nodes are densely deployed
• Sensor nodes are prone to failure
• The topology of a sensor network changes very
  frequently
• Sensor nodes are limited in power, computational
  capabilities, and memory

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Issues in WSNs
Introduction

• Networking
• Physical design
• MAC protocols
• Power saving, collision avoidance,
• Routing protocols
• Data aggregation, dissemination,
• Network management
• Deployment, redeployment, topology control
• Localization and positioning
• Coverage and connectivity problems
• Application
• Intruders detection, tracking,
• Event border detection
• Energy Efficient

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Thank you.