WSN - Project_presentation

8/8/2019 WSN - Project_presentation

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--- an overview


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Introduction Sensor & Wireless Sensor Network Components of WSN

Deployment of WSN Unique characteristics of WSN Application of WSN (Military, Environment,

Home and Other ) Factors influencing sensor network design Communication architecture of sensor network Current research projects Conclusion


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A sensor is a device that measures a physicalquantity and converts it into a signal which canbe read by an observer or by an instrument. For

accuracy, most sensors are calibrated againstknown standards.

Sensor faucet

Thermocouple sensor


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A wireless sensor network (WSN) consists ofspatially distributed autonomous sensorscooperatively monitor physical or

environmental conditions, such astemperature, sound, vibration, pressure,motion or pollutants.

Wireless Sensor Network


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Sensor node. Also known as a mote. Theseusually consists of

a controller

one or more sensors

a transceiver an external memory a power source

A base station which acts as a gateway betweensensor nodes and end users.

Sensor Node Architecture


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Densely deployed inside the phenomenon.

Deployed very close to the phenomenon.

Position of sensor nodes need not be pre -determined or engineered.

They are deployed either of these ways ;


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Can harvest or store only limited power

Ability to withstand harsh environmentalconditions

Ability to cope with node failures

Mobility of nodes

Dynamic network topology

Large scale of deployment

Node capacity is scalable, only limited bybandwidth of gateway node.

Random deployment

Cooperative capability


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Monitoring friendly forces, equipment andammunition

Reconnaissance of opposing forces and terrain

Battlefield surveillance Battle damage assessment

Nuclear, biological and chemical attackdetection

MILITARY APPLICATIONS


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Forest fire detection

Bio-complexity mapping of the environment

Flood detection

Precision agriculture

ENVIRONMENTAL APPLICATIONS


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Tele-monitoring of human physiological data

Tracking and monitoring patients and doctorsinside a hospital

Drug administration in hospitals

HEALTH APPLICATIONS


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Home automation and Smart environment Interactive museums

Managing inventory control

Vehicle tracking and detection Detecting and monitoring car thefts

HOME AND OTHER COMMERCIAL APPLICATIONS


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Fault Tolerance

Scalability

Hardware Constraints

Sensor Network Topology

Environment

Transmission Media Power Consumption


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Combine power androuting awareness

Integrates date withnetworking protocols

Communicates power

efficiently through thewireless medium

Promotes cooperativeefforts among sensor nodes.


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CURRENT RESEARCH PROJECTS


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MIT d'Arbeloff Lab The ring sensor Monitors the physiological status of the wearer

and transmits the information to the medical

practitioner over the Internet.

Oak Ridge National Laboratory Nose-on-a-chip is a MEMS-based sensor

It can detect 400 species of gases and transmit

a signal indicating the level to a central controlstation


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InterestingInterestingApplicationsApplications

The system, designed by eProvenance,includes three physical components: asemi-active RFID-tag placed inside theshipping case to monitor and recordtemperatures and improve shippingand receiving operations throughoutthe distribution chain; a passive RFID-tag with a unique code attached to thebase of the bottle to automate trackingand inventory management, anddiscourage pilferage; and aproprietary, tamper-proof neck sealwith a covert code applied at the baseof the capsule to authenticate the wineinside the bottle.

A high-speed, encrypted, online

database links each unique bottle, caseand capsule, collecting identificationnumbers, along with authenticationdata from the chteau, shipment data,temperature records to create theelectronic pedigree for each bottle.

Uniquely coded RFIDtag at the base of thebottle


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Smart environments represent the nextevolutionary development step in building ,utilities, industrial, home and transportation

systems automation. However to fully realizethe sensor networks, one needs to satisfy theconstraints introduced by the factors. Manyresearchers are currently engaged in

developing the technologies needed fordifferent layers of the sensor network protocolstack.

Documents

WSN - Project_presentation