High-availability data collection method based on multiple AUVs in underwater sensor network

Abstract

The invention discloses a high-availability data collection method based on multiple AUVs in an underwater sensor network. The method comprises the following steps: constructing an underwater sensor network model, patrolling, by a plurality of autonomous underwater vehicles AUVs, in the network according to a predefined spiral trajectory for data collection, and periodically adjusting the patrol trajectory; and calculating, by a node, whether itself is within the collection area of one or more autonomous underwater vehicles AUVs according to own location and the trajectories of the autonomousunderwater vehicles AUVs. The node within the collection area performs communication after the autonomous underwater vehicle AUV arriving at the vicinity of the node to upload data; and the node beyond the collection area forwards the data to the node within the collection area through multiple hops. When the autonomous underwater vehicle AUV is faulty, a gateway node discovering the fault broadcasts a control packet and performs fault processing. By adoption of the high-availability data collection method, the energy consumption and the communication overhead of the node are reduced, and thehigh availability of the network is guaranteed.

Description

technical field [0001] The invention relates to a multi-AUV-based high-availability data collection method in an underwater sensor network, and belongs to the technical field of wireless sensor network data collection. Background technique [0002] With the development of communication technology and hardware manufacturing technology, Underwater Wireless Sensor Networks (UWSN, Underwater Wireless Sensor Networks) have been widely used in marine data collection, pollution monitoring, marine exploration, disaster warning, auxiliary navigation, battlefield surveillance and mineral detection, etc. . The underwater sensor network generally refers to a multi-hop network composed of underwater sensor nodes, underwater instruments, above-water nodes, and above-water control centers. The underwater sensor node forwards the data to the above-water node or some underwater instruments through single-hop or multi-hop, and the above-water node or underwater instrument sends the data to t...

AI Technical Summary

Problems solved by technology

[0009] 1. Using the single AUV mode, there is no remedial measure when the autonomous underwater vehicle AUV fails, the node data cannot be delivered to the sink node in time, and the network is paralyzed

[0010] 2. The selection of the gateway node requires the exchange of control packets between the node and the autonomous underwater vehicle AUV, which brings a large communication overhead

[0011] 3. The fixed trajectory of the autonomous underwater vehicle AUV makes the energy consumption of the nodes near the trajectory faster, which is easy to form a hot spot problem and affect the performance of the network

[0012] 4. The cruising path of the autonomous underwater vehicle AUV is too long, and the end-to-end delay of the network is relatively large

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