The sensor nodes of a wireless grain depot surveillance system are deployed in crystal grids, which provide lot of valid position information. To avoid the energy consumption unbalance of the single hop routing model adopted by LEACH protocol, a novel hybrid routing model is proposed in this paper. Multi-hop routing is introduced into the distant field nodes through right angle transferring of approximate equivalence consumption path. And the average energy consumption is used as a threshold of selecting intermediate transferring nodes to minimize total variance of node s energy consumption, so that balance the whole network. Simulations show that the hybrid model eliminates hot spots within cluster and prolong the lifetime ofWSN.

05552057.pdf

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