Deployment method for a plurality of water surface sink nodes of underwater wireless sensor network

Abstract

The invention relates to a deployment method for a plurality of water surface sink nodes of an underwater wireless sensor network. The method comprises the steps of establishing a life cycle model ofthe network and a delay model of the network; importing a local differential search method and differential cross and mutation operators to improve an NSGA-II algorithm, and carrying out deployment optimization on the plurality of water surface sink nodes of the underwater wireless sensor network through application of the improved NSGA-II algorithm and the life cycle model and the delay model ofthe underwater wireless sensor network; and carrying out relative efficiency sorting through application of the deployment method for the plurality of water surface sink nodes, and determining a relative efficiency optimal deployment scheme, wherein the relative efficiency optimal deployment scheme is obtained by a super-efficiency DEA method. According to the method, the optimized deployment scheme for the plurality of water surface sink nodes of the underwater wireless sensor network can be computed comprehensively, precisely and conveniently, and the method guidance for the underwater wireless sensor network to maximally reduce the energy consumption and network transmission delay is provided.

Description

technical field [0001] The invention relates to a monitoring technology, in particular to a method for deploying multiple convergence nodes on the water surface of an underwater wireless sensor network. Background technique [0002] The underwater wireless sensor network can monitor the complex underwater environment and complete important underwater tasks, such as water quality monitoring, underwater exploration, disaster prevention, earthquake monitoring, auxiliary navigation, marine military, mine reconnaissance, etc. [0003] Underwater, due to the special nature of water, radio frequency signals are seriously attenuated in short distances in water. Therefore, the 2.4GHz and 868MHz wireless frequencies commonly used in ground wireless sensor networks cannot be used underwater. Underwater communication usually uses audio signals for communication. The propagation speed of underwater acoustic communication is about 1500m / s, which is 5 orders of magnitude lower than that of...

AI Technical Summary

Problems solved by technology

Such a low transmission speed will form a long time delay in information propagation, and the superposition will lead to a high delay from sensor nodes to land receiving stations, which greatly limits the application of underwater wireless sensor networks in interactive application systems and real-time monitoring systems. application

[0004] The battery energy of underwater sensor nodes is limited, and it is very difficult to charge and replace batteries in an underwater environment. Compared with wireless sensor nodes on land, the signal receiving end of underwater wireless sensor nodes requires complex signal processing operations to compensate for long distances. Transmission channel attenuation, aggravating energy consumption

The depletion of battery energy means the end of the system life cycle, which seriously affects the life cycle of the underwater wireless sensor network

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