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Tri-dimensional positioning method for underwater wireless sensor network node

A wireless sensor and network node technology, applied in wireless communication, network topology, broadcast service distribution, etc., can solve the problems of high infrastructure and application environment, reduce the possibility, reduce the positioning error, and increase the effectiveness Effect

Inactive Publication Date: 2009-07-15
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

But it has high infrastructure and application environment requirements, and it can only be used as an auxiliary tool for low-cost and low-power sensor networks

Method used

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  • Tri-dimensional positioning method for underwater wireless sensor network node
  • Tri-dimensional positioning method for underwater wireless sensor network node
  • Tri-dimensional positioning method for underwater wireless sensor network node

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Experimental program
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Embodiment Construction

[0022] A further detailed description will be given below in conjunction with the drawings and specific embodiments.

[0023] The present invention is aimed at a sparsely laid out underwater three-dimensional sensor network, and under certain reasonable assumptions, the three-dimensional positioning technology is equivalently mapped to the two-dimensional positioning technology. For plane positioning, the distance-independent positioning method based on the exchange of distance vectors is combined with the distance-dependent positioning method, and a reasonable iterative control mechanism is used to minimize the positioning error of the underwater 3D sensor network while better controlling the communication overhead. .

[0024] figure 1 It is a schematic diagram of the structure of an underwater three-dimensional sensor network. The nodes in the network are divided into beacon nodes and ordinary nodes. The circles represent ordinary nodes, and the squares represent beacon nodes....

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Abstract

The invention provides a three dimensional locating method of underwater wireless sensor network nodes; first, the coordinates of each beaconing node is obtained and then the coordinates of each general node is assured. The coordinates of each general node is assured as followed, the three dimensional locating work of the coordinate of each general node is equivalently turned into two dimensional location; the general node makes use of distance vector arithmetic and the two dimensional coordinates of the beaconing node to the initial two dimensional coordinates; the two dimensional coordinates of adjacent node is used to iterate and update the two dimensional coordinate of the node till the coordinates is converged to actual two dimensional positions; at last the relation between the depth of water and the intensity of pressure are used to get the depth of water of general node. The method adopts certain message transmitting and iterating control mechanism to reduce the locating error to the lowest in the condition of effectively controlling communication overhead.

Description

Technical field [0001] The present invention relates to wireless sensor network technology, in particular to a method for positioning an underwater wireless sensor network node. Background technique [0002] With the advancement of micro-electromechanical technology, wireless communication and other technologies, low-cost, low-power, small-size, multi-function, and short-distance communication sensor nodes have been continuously developed. These tiny sensor nodes are composed of sensing, data processing, and communication units. The wireless sensor network composed of a large number of sensor nodes has a wide range of application prospects in many fields such as industrial and agricultural control, military defense, biomedicine, environmental monitoring, emergency rescue and disaster relief. [0003] In many applications of sensor networks, each node senses data, transmits data back, and analyzes and processes the data at the central node, which has become a basic approach for va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W64/00H04W84/18
Inventor 刘文予蒋洪波张松涛陈金华舒乐
Owner HUAZHONG UNIV OF SCI & TECH
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