Offshore mobile sensor network routing maintenance method based on cluster ring mechanism

Abstract

The invention discloses an offshore mobile sensor network routing maintenance method based on a cluster ring mechanism; the offshore mobile sensor network comprises a sensor node, set nodes and a UAVunmanned aerial vehicle; the offshore mobile sensor network routing maintenance method based on the cluster ring mechanism comprises the following steps: set structure network establishment, UAV mobile access, cluster ring message periodic broadcast, intra-set node multi-hop routing, and dynamic routing in a complex environment. According to the maintenance method, the path distance for multi-hoptransmission of the data to the UAV by each sensor node can be reduced, network energy consumption is balanced, the method is applicable to various network shapes; meanwhile, network topology routingis optimized, and frequent changes of the mobile sensor network topology structure under a severe seaborne environment are self-adapted through the dynamic routing.

Description

technical field [0001] The present invention belongs to the technical field of sensor networks. Specifically, the present invention relates to a maritime mobile sensor network, in particular to a routing maintenance method based on a centralized ring mechanism for a maritime mobile sensor network. Background technique [0002] It is very important to build a marine monitoring system, especially a monitoring system for the sea surface environment, to monitor the environment of the ocean boundary area. The sea surface monitoring system can be applied in some important areas of the sea, such as ports, marine protected areas, waterways, etc., which can greatly improve the real-time monitoring of the marine environment and marine resources, and effectively monitor and protect marine environmental resources. [0003] At present, sea surface monitoring mainly relies on satellites, ships or buoys and other offshore resident instruments for regular detection, and these methods are ve...

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Problems solved by technology

[0004] However, there are certain problems in the transmission scheme of the existing maritime sensor network. First, if the UAV traverses all the nodes during the voyage, the UAV voyage path will be too long, and the energy consumption will be too high, resulting in high cost. How to reduce the UAV voyage distance to extend the battery life time is an important issue

[0005] Second, due to the high importance of some monitoring areas on the ocean, it is necessary to collect a large amount of data such as images or videos, while the remaining areas only need to collect small-scale data such as temperature, humidity, salinity, wind speed, etc. How to match different types of sensor nodes and take into account different The collection of large-scale data needs to be solved

[0006] Third, the sensor nodes at sea have been drifting with the tide, and their locations are continuously changing slowly, resulting in frequent changes in the network topology; at the same time, various obstacles often appear on the sea, such as ship occlusion or node failure. How to solve the problem in this complex environment? It is very important to maintain the stability of the offshore network transmission environment for network routing problems

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