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