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Research On Data Collection And Energy Saving Algorithms For Wireless Sensor Networks

Posted on:2018-03-19Degree:MasterType:Thesis
Country:ChinaCandidate:Y Y JuFull Text:PDF
GTID:2348330536979567Subject:Information and Signal Processing
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Wireless sensor network(WSN)due to geographic locations and the environment and other restrictions,it is difficult to supplement energy or replace the battery for the deployed sensor nodes.In the WSN data collection process,energy-saving algorithm is particularly important to this problem.The main purpose of this paper is to investigate the algorithms of energy saving and data collection,and the main contents are listed as follows:In the energy balanced Multi-hop Routing Algorithm Based on LEACH Algorithm,the method of cluster head selection was only concerned with the residual energy and the distance from node to the base station,which results in uneven distribution of cluster head nodes.In this paper,the node density is adopted to the cluster head selection threshold formula,which makes the node in node-intensive area more likely than the node-sparse area to be chosen as cluster head,and it can applied to different environments,through the control of the impact factor in cluster head selection formula.Over the previous research,this paper also incorporates the distances from the cluster head and the base station to the node into cluster head selection.If the node is closer to the base station,the node transmits the data directly to the base station,otherwise it transmits to the cluster head node,and then transmitted by the cluster head node to the base station.Such a scheme can reduce the pressure of the cluster head,balance the energy of the WSN and prolong the life cycle of the network.The cluster heads need to collect the data of the normal nodes and transmit the data to the base station,so the cluster heads need to consume more energy.In this paper,the PEGASIS algorithm based on triangular fusion technology is applied to the cluster head for uneven energy distribution.Firstly,the cluster head is built into a chain with a PEGASIS algorithm based on triangular fusion technology.A chain head node is selected in the cluster head chain.All cluster heads transfer data to the chain head node and the head node combine data and transmit it to the base station.This can reduce the distance between the cluster head node data transmission,balance the WSN energy,and extend the network life cycle.
Keywords/Search Tags:wireless sensor network, data collection, energy saving algorithm, LEACH algorithm, PEGASIS algorithm
PDF Full Text Request
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