Coverage Preserving Algorithm for Visual Sensor Network
Published: 2010
Author(s) Name: H. H. Kenchannavar, Gaurang S Patkar, U P Kulkarni
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Abstract
Visual sensor networks (VSNs) have been attracting more
and more research attention nowadays. There are
applications where the spatial density of sensors is a
constraint. Assuming that with the current technology the
cost of a sensor is tens of times greater than the cost of
embedded batteries, it will be valuable to examine whether
the lifetime of the network could be increased by simply
distributing extra energy to some existing nodes without
introducing new nodes. In this paper an improvement to
LEACH protocol is done to increase the lifetime of network.
CPA is heterogeneous-aware, in the sense that election
probabilities are weighted by the initial energy of a node
relative to that of other nodes in the network. This prolongs
the time interval before the death of the first node (stability
period), which is crucial for many applications where the
feedback from the sensor network must be reliable.
Keywords - LEACH, CPA, VSN
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