Research On Cluster Algorithm Of Wireless Sensor Networks For Fine Agriculture

As one of the most important technologies in the 21 st century,Wireless Sensor Network has its vast development prospects and great economic value.From the beginning,there has been a wave of research around the world.Fine agriculture is closely related to the informatization.To achieve the goal of sustainable development of fine agriculture,we need to take advantage of the development achievements of modern science and technology.New technologies such as WSN are used to reduce the operating cost of farmland in unit area,rational use of chemical fertilizers,reduce the pollution of the environmental and soil,save water resource.Wireless sensor network technology has its unique advantages in fine agriculture.It can be used to monitor crop irrigation,soil air changes and large area of surface detection.Which the wireless sensor network is applied to the acquisition and management of fine agricultural information has become a trend and is inevitable.The main objective of this thesis is that in the application environment of fine agriculture,to minimize the energy consumption of sensor nodes and extend the overall life cycle of wireless sensor networks.on the basis of guaranteeing the normal operation of wireless sensor network.Firstly,this thesis introduces the research background of the thesis briefly,the present situation and development trend of fine agriculture and wireless sensor networks at home and abroad are analyzed,and the challenge of fine agriculture wireless sensor network at present are discussed.The composition of wireless sensor nodes,the architecture of network and the whole construction are expounded,and the characteristics of wireless sensor networks are summarized.Then the thesis introduces several typical algorithms of network layer routing algorithm in Wireless sensor network.The basic realization method,advantages and disadvantages are analyzed and its application scope are pointed out.and emphatically analyzes the concrete implementation process of DEEC algorithm to improve it.Secondly,aiming at the problem of large monitoring area,long monitoring time,low power requirement,complex terrain and diverse crops in the field of large-scale farmland planting monitoring in WSN,this thesis proposes a load balancing clustering algorithm based on DEEC equilateral node deployment ETLB-DEEC,analyzes equilateral and square grid node deployment way.On the premise of ensuring the connectivity of network monitoring area,finally,uses the way of equilateral grid node deployment and the network partition.Network partition is used to divide the network into several parts,so that the distribution of cluster heads is more unifo rm and the energy consumption is balanced.And proposes concept of "The Orphan node" and "The reception node".And on this basis,a multi hop optimization mechanism is designed for the shortest path to the base station within the cluster,and multiple shortest path algorithms can be found.The simulation results show that the improved algorithm has the functions and features of efficiently saving the number of sensor nodes?reducing the cost of network?realizing load balancing of global network?increasing energy utilization of network and prolonging the whole life cycle of WSN.