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. -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.