| In recent years, with the rapid development of microelectronics technology and so on,wireless sensor networks has also been a rapid development.Due to its low powerconsumption, flexibility, and other characteristics,it has attracted more and more people’sattention.And with some deficiencies of sensor node itself and influence of workingenvironment make node energy is disposable and can not get timely supplement,so energyefficiency is a hot topic in wireless sensor networks, due to network the working environmentis open, so network security is another hot topic.This thesis presents a new algorithm thatBased on the safety to improve the life of wireless sensor network (WSN) method mainly forshortcomings on energy efficiency and security of wireless sensor networks.The algorithm first use the cover technology that allows the redundant nodes of thenetwork to sleep,until find death of the network node, breaking the redundancy status ofredundant node,make the node wake up and go to work,improve the utilization ofenergy.Meanwhile for the lack of the presence of LEACH, we propose a new algorithm ofLEACH.In the new algorithm of LEACH, when selecting cluster head node, taking intoaccount the two factors of current residual energy of nodes and node location, so make thisnodes become cluster head node which has higher residual energy and node location awayfrom the sink node rivalry closed,Thereby reducing unnecessary network energywaste.Combination of two technologies further improve the energy efficiency of the network,and improve the network’s working time.Meanwhile, according to the workingcharacteristics of LEACH and black attack,make the cluster node is the monitoring node as thesame time,monitoring the network,improve the security of the network.And the sensor nodedoes not consume extra energy because little compute.Finally, we use MATLAB software simulation the algorithm,and simulation theenergy-saving algorithms, security algorithm respectively.Get the desired results,proved thecorrectness and feasibility of the algorithm. |
