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LOW POWERWIRELESS SENSORNETWORK

PREPARED BYPRANAV KUMAR

EC 3 rd YEAR

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CONTENTSIntroduction.Sensor Node.Power Operation In Network.I. Power Awareness From Radio Communication

Hardware.II. Microcontroller.III. System Partitioning.

Applications.Advantages.DisadvantagesConclusion.Future ScopeReferences

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INTRODUCTIONA wireless sensor network is a collection of wireless sensors covering a small area.Every sensor perform independent sensing,processing and transmission of data over wirelesslink with minimum power consumption.These include low energy signaling andnetworking.

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SENSOR NODE

A sensor node, also known as MOTE.

It is a node in a wireless sensor networkthat is capable of performing someprocessing, gathering sensory informationand communication with gateway sensor node.

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SENSOR NODE

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POWER OPERATION INNETWORK

Power awareness from radio

communication hardware.Microcontroller.Energy efficient network.

Signal processing in the network.System partitioning.

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POWER AWARENESS FROMRADIO HARDWARE

The functionality of both transmitter andreceiver are combined into a single deviceknown as Transceiver that are used insensor nodes.The operational states are Transmit,Receive, Idle and Sleep.Low voltage operation.

1.8V minimum supply .

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MICROCONTROLLERHere we use ultra low power microcontroller TEXAS MSP430TEXAS MSP430 .1.8V power supply.Active power 6mW.Sleep power 3 W.

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SYSTEM PARTITIONINGSystem partitioning is a computationamong multiple sensor nodes andperforming the computation in parallelpermits a greater energy saving throughfrequency and voltage scaling.

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SYSTEM PARTITIONING

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APPLICATIONSEnvironmental sensing.

Home automation.Security & military surveillance.Industrial control & monitoring.Health care.Agriculture field.

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ADVANTAGESLow cost.

Low power.Small size.Fast operation.Reduces use of man power.

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DISADVANTAGESShort communication distance.

Its damn easy for hackers to hack.Comparatively low speed of communication.

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CONCLUSIONIn human life a sensor network maybe the powerful tool, because theycan be deployed at the places wherea man can not reach.

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FUTURE SCOPESmart Home/Smart Office

Sensor controlling appliances andelectrical devices in house.Better lightning and heating in officebuildings.

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Biomedical/MedicalHealth Monitor Chronic DiseasesHospital Sensor Traffic Management and MonitoringFuture cars could use wireless sensors

to handle thefts and accidents.

Sensors embedded in roads to monitor traffic flow, provide real- time route updates .

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References

[1] Rajgopal Kannan, Ram Kalidindi, S. S. Iyengar Energy andRate based MAC Protocol for Wireless Sensor Networks ,International Symposium on Communication Theoryand Applications, Louisiana State University, Dec2003

[2] N. Bulusu, D. Estrin, L. Girod, J. Heidemann, Scalablecoordination for wireless sensor networks: self-configuringlocalization systems, International Symposium on

Communication Theory and Applications (ISCTA2001),Ambleside, UK, July 2001.

[3] Heidemann, F. Silva, C. Intanagonwiwat, Building efficientwireless sensor networks with low-level naming,Proceedings of the Symposium on Operating SystemsPrinciples, Banff, Canada, 2001.

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Any Question Or Quires......

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