基于限定區(qū)域內(nèi)隨機(jī)喚醒機(jī)制的WSN覆蓋算法研究
[Abstract]:With the development of embedded technology and wireless communication technology, wireless sensor network (WSN), which has the advantages of low power consumption, multi-function and low cost, has been widely used in various industries. At the same time, because the sensor nodes carry limited energy and other shortcomings, WSN also exposed a lot of shortcomings and shortcomings. In order to save node energy and prolong the working time of WSN, many WSN energy saving methods have emerged. Among them, the coverage control method of WSN has been widely concerned by many scholars because it can effectively save energy of nodes and improve the quality of network service. Based on the analysis and study of various coverage control methods in WSN, the existing coverage control methods need complex calculation, and the performance of sensor nodes is usually ignored. A new coverage control method for sensor networks is proposed. Firstly, all nodes in the network are dormant and one node is selected randomly to start work. The node sends messages to its neighbor nodes with two different communication radii, and divides the neighbor regions into two different sets of nodes: the set of nodes suitable for wake-up, the set of outer points, The region is defined by the outer point. The set of nodes suitable for replacing working nodes is a set of interiors in which the region is defined as the inner point. Then the network is initialized and each working node randomly selects a dormant node to wake up according to its priority. After the initialization stage the network reaches the stable stage. When the power of the node is exhausted a node wake-up is randomly selected from the limited area within the node to fill the coverage void caused by the failure node. Because the distance of the sensor node is in a controllable range, the redundant coverage area can be effectively controlled when the sensor node is working. Finally, the simulation results are obtained and compared with those of the typical overlay control algorithm. The results show that the proposed method can reduce the number of working nodes and reduce the coverage redundancy on the basis of satisfying the requirements of network coverage, thus achieving the goal of saving node energy and prolonging the network lifetime.
【學(xué)位授予單位】:哈爾濱工程大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:TP212.9;TN929.5
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