Extend Life of Wireless Sensor Network

Prepared By : Gaurang Rathod Research Scholar Wireless Sensor Network

India

rathodgaurang@hotmail.com

Outline

Introduction Problem Statement Solutions Conclusion References

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Wireless Sensor Network

Emerging technology made up of small wireless nodes which are smart enough to communicate effectively with nearby other sensors nodes and send data to sink

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Figure 1. Sensor nodes scattered in a sensor field [1]

Node Architecture

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Figure 2. General hardware architecture of node [2]

MICA2 Mote

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Figure 3. MICA2 Mote [3]

Energy Consumption of Node[2]

1. Sensing UnitFor passive light or temperature sensors, the power consumption can perhaps be ignored in comparison to other devices on a wireless node

2. Microprocessor/ Microcontroller

3. Transceiver

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Figure 4. Power consumption of a MicaZ node [4]

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The ratio of the energy consumption to send one bit compared to computing a single instruction is between 1500 to 2700

Energy consumption by transceiver unit is more compared to other component of node

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Network Lifetime Time duration before certain

percentage of node die In most of cases, lifetime define as

time duration required to die first sensor node

Lifetime of network define by life of node

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Solutions for lifetime Enhancement

1. Efficient Node Deployment2. Scheduling3. Data Aggregation4. Routing5. Mobile Sink

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Area of Interest

Energy efficient node deployment such that hope required in routing reduced so as radio communication will be reduced

Node deployment such that area coverage maximum and number of nodes requirement reduced

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Data aggregation reduce number of data required to send to sink so less radio communication

Mobile sink provide balance(equal) energy consumption of nodes and this way increase life of network

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Conclusions Lifetime of network define by energy of node

Most of Energy consumption done by transmitter and receiver part of node

By reducing radio communication and making balance energy consumption of all nodes, lifetime of wireless sensor network can be increased

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References

1. I. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci, “A survey on sensor networks,” IEEE Commun. Mag., vol. 40, no. 8, pp. 102–114, Aug. 2002.

2. Karl, Holger and Andreas Willig, “Protocols and Architectures for Wireless Sensor Networks”, John Wiley & Son Ltd, 2005.

3. Datasheet of Mica2 mote.4. I. Akyildiz and M. Vuran, “Wireless Sensor

Networks”, John Wiley & Son Ltd, 2010.

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Thanking You

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