Low Power Wireless Sensor Network
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LOW POWER WIRELESS SENSOR NETWORK
Presented By
Suguresh Kumar Arali
SRN No:- 01FM14EVL021
PES University
Under the guidance of Mr.Ravishankar Subrahmanya
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CONTENTS
Introduction Sensor node Power operation in network
Power awareness from Radio Communication Hardware
MicrocontrollerEnergy-efficient networks
Advantages Disadvantages Application Conclusion References
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INTRODUCTION
A wireless sensor network is a collection of wireless sensors covering a small area.
Every sensor performs independent sensing processing and transmission of data over wireless link with minimum power consumption.
These include low-energy signaling and networking
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SENSOR NETWORK
Gateway sensor node
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SENSOR NODE
A sensor node, also known as a ‘mote‘ It is a node in a wireless sensor network
that is capable of performing some processing, gathering sensory information and communication with gateway sensor node
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SENSOR NODE ARCHITECTURE
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POWER OPERATION IN NETWORK
Power awareness from Radio Communication Hardware Microcontroller Energy-efficient networks
Signal Processing in the NetworkSystem Partitioning
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POWER AWARENESS FROM RADIO HARDWARE
The functionality of both transmitter and receiver are combined into a single device know as transceiver are used in sensor nodes.
The operational states are transmit ,receive , idle and sleep
Low Voltage Operation1.8V minimum supply
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MICROCONTROLLER :-
Here we use ultra low power microcontroller (eg Texas MSP430 )
1.8V power supplyActive power 6mWSleep power 3µwZero-power Brown Out Reset (BOR)<6 μs clock startup time <50 nA pin leakage current
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SIGNAL PROCESSING IN NETWORK
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SYSTEM PARTITIONING
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APPLICATIONS
Environmental sensing Home automationSecurity & military surveillanceIndustrial control & monitoringHealth care Agriculture field
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Real Time Application(A Low-Power Wireless Sensor for Online Ambient Monitoring
)
Wireless Sensor Hardware Architecture
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WorkingFlow Diagram
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ADVANTAGES
Low cost Low power Small size Fast operation Reduce of man power
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DISADVANTAGES
Short communication distance It’s damn easy for hackers to hack Comparatively low speed of communication
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CONCLUSION
• In human life a sensor network may be the powerful tool, because they can be deployed at the places where a man can not reach
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References
• Silivu C.Folea and George Mois , A Low-Power Wireless Sensor for Online Ambient Monitoring. IEEE Sensors Journal, 20 November 2014.
• Rajgopal Kannan, Ram Kalidindi, S. S. Iyengar. Energy and Rate based MAC Protocol for Wireless Sensor Networks , International Symposium on Communication Theory and Applications, Louisiana State University, Dec2003