Abstract
According to the advantages and disadvantages of LEACH and PEGASIS,we propose a LEACH-P protocol which cluster head is a improved and connected into a chain protocol.This protocol first choose cluster head in the wireless sensor networks and make all nodes into clusters.Then it top-down traversals cluster head and finds a link connection which optimizes cluster head election and inter-cluster communication. It is more adapted to the pressure monitoring system of downhole hydraulic support.NS2 simulation show that the improved protocol can extend the network life cycle and have a good real-time.
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