Covering method of wireless sensor network in marine environment

Abstract

The invention discloses a covering method of a wireless sensor network in a marine environment. The method includes the following steps: firstly, performing vertical plane sampling on an underwater three-dimensional monitoring area; and then, performing straight line sampling on the plane, and converting a coverage problem of the three-dimensional space into a straight line coverage optimization problem; and finally, increasing the coverage rate of a sensing circle to a straight line to further improve the coverage rate of an underwater sensor network to the three-dimensional monitoring area.According to the scheme of the invention, the coverage optimization of the three-dimensional sensor network is performed from the local to the whole, and the coverage rate of the three-dimensional area can be significantly improved in the case that the movement distance of the sensor is minimized.

Description

technical field [0001] The invention belongs to the technical field of underwater wireless networks, and in particular relates to a covering method of a wireless sensor network in a marine environment. Background technique [0002] Underwater wireless sensor network extends the traditional wireless sensor network underwater, and is a new research field in the whole field of wireless sensor network. The underwater wireless sensor network refers to deploying a large number of sensor nodes in a designated water area according to a certain method, and using the self-organizing ability of the nodes to establish a network. The nodes with sensing function in the network monitor and collect various monitoring information of the monitored water area in real time, and then transmit the data to the surface base station through the communication node, and then transmit the data to the monitoring center through the Internet or satellites. [0003] Due to the particularity of the marine ...

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Problems solved by technology

[0003] Due to the particularity of the marine environment, the marine wireless sensor network has its unique characteristics compared with the land wireless sensor network: first, the monitoring area of ​​the marine environment is usually larger, and the underwater remote sensor network can be reached by acoustic communication. Distance transmission, and underwater nodes are expensive and not suitable for dense deployment, so ocean wireless sensor networks are usually very sparse; second, underwater sensor nodes are usually randomly broadcast to designated areas by aircraft or ships, and underwater nodes need to have self-organizing The ability of networking; third, because the nodes in the sea are affected by the current or wind and deviate from the original position, the network topology will change, so the marine sensor network is usually dynamic; due to the limited energy of the sensor, and the replacement Therefore, how to reduce the energy consumption of sensor nodes and prolong the network life cycle while ensuring the coverage area or coverage target is an important issue in the application of marine wireless sensor networks.

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