Post on 26-Dec-2015
description
LOW POWER WIRELESS SENSOR NETWORK
Presented By
Suguresh Kumar Arali
SRN No:- 01FM14EVL021
PES University
Under the guidance of Mr.Ravishankar Subrahmanya
CONTENTS
Introduction Sensor node Power operation in network
Power awareness from Radio Communication Hardware
MicrocontrollerEnergy-efficient networks
Advantages Disadvantages Application Conclusion References
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
SENSOR NETWORK
Gateway sensor node
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
SENSOR NODE ARCHITECTURE
POWER OPERATION IN NETWORK
Power awareness from Radio Communication Hardware Microcontroller Energy-efficient networks
Signal Processing in the NetworkSystem Partitioning
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
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
SIGNAL PROCESSING IN NETWORK
SYSTEM PARTITIONING
APPLICATIONS
Environmental sensing Home automationSecurity & military surveillanceIndustrial control & monitoringHealth care Agriculture field
Real Time Application(A Low-Power Wireless Sensor for Online Ambient Monitoring
)
Wireless Sensor Hardware Architecture
WorkingFlow Diagram
ADVANTAGES
Low cost Low power Small size Fast operation Reduce of man power
DISADVANTAGES
Short communication distance It’s damn easy for hackers to hack Comparatively low speed of communication
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
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