RESEARCH ON COVERAGE ENERGY SAVING ALGORITHM FOR HETEROGENEOUS WIRELESS MULTIMEDIA SENSOR NETWORKS FOR 3D DIRECTIONAL SENSING MODEL

摘要

Wireless multimedia sensor networks are widely used in human life. Therefore, how to reduce network energy consumption and enhance network coverage has become a hot issue at home and abroad. In order to maintain the network coverage of 3D wireless multimedia sensor network and reduce the network energy consumption, a multi-objective optimization algorithm-based three-dimensional directed sensing model for heterogeneous wireless multimedia sensor network coverage energy-saving method is proposed. Firstly, a mathematical model for energy-saving coverage of heterogeneous wireless multimedia sensor networks is established; Secondly, the NSGA-II algorithm which is effective in solving the bi-objective optimization problems is used, and a plurality of mutually exclusive routing connection schemes can be obtained. Then the TOPSIS method is used to select the optimal routing connection scheme suitable for the current network topology. Finally, according to the current communication link, the remaining energy of each surviving node is calculated. Therefore, the routing connection schemes that can maintain the network lifetime and coverage simultaneously are obtained when the topology changes continuously. In order to verify the coverage energy saving effect of the proposed algorithm, the results are compared with the ESCAK method. The experiments show that the proposed method can obtain higher network coverage and node residual energy.