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International Journal of

Recent Trends in Engineering

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International Journal of Recent Trends in Engineering (IJRTE)

ISSN 1797-9617

Volume 1, Number 1, May 2009

Issue on Computer Science

Page(s): 594-596

Power Saving Method for Target Tracking Sensor Networks to Improve the Lifetime

S.Anandamurugan, C.Venkatesh

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Abstract

Target tracking sensor networks monitor and track the movement of a target object. Power management in these sensor networks is crucial to prolong the network lifetime. We propose a new protocol PMM (Power Management Method for tracking sensor networks) that provides a dynamic sleep schedule for the radios such that maximum power is saved without affecting the sensors' activities. When there is no target, the communication modules of sensor nodes are put into sleep using a static schedule, except the outline nodes. Inside nodes do not perform the sensing activity in the surveillance state. If a target arrives, the sleep schedule for the radios is changed dynamically in order to send the arrival message to neighboring sensors. Whenever receiving the arrival message, the sleeping neighbor nodes start sensing. The objectives of our protocol are to (1) balance the lifetime of all the sensor nodes in the network to increase the network lifetime (2) reduce the power consumption by activating the sensors only when the target arrives in that region. Simulation results show that PMM provides a significant amount of Power savings and potentially increases the network lifetime by 25% more than S-MAC at very less load.

Index Terms

Target tracking sensor networks, MAC protocols, Power management, Sleep methods

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