Method for selecting self-organization nodes in wireless sensor network

Abstract

The invention relates to a method for selecting self-organization nodes in a wireless sensor network. The method comprises the following steps: a working node set is divided into a first node set and The invention relates to a method for selecting self-organization nodes in a wireless sensor network. The method comprises the following steps: a working node set is divided into a first node set anda second node set in the current sampling time; a working threshold is confirmed according to the difference income of working nodes in the second node set to the first node set; working nodes in thea second node set in the current sampling time; a working threshold is confirmed according to the difference income of working nodes in the second node set to the first node set; working nodes in theworking node set broadcast track task information which comprises the position information of the working nodes, state vectors of a predicted target, a covariance predicted matrix of a filter and theworking node set broadcast track task information which comprises the position information of the working nodes, state vectors of a predicted target, a covariance predicted matrix of a filter and theworking threshold; an idle node receives the track task information and judges whether to join the first node set in the next sampling time according to the self position information and the track tasworking threshold; an idle node receives the track task information and judges whether to join the first node set in the next sampling time according to the self position information and the track task information; if the idle node can join the first node set, the idle node broadcasts a joining decision, or else the idle node continuously keeps an idle state. The method enables the wireless sensork information; if the idle node can join the first node set, the idle node broadcasts a joining decision, or else the idle node continuously keeps an idle state. The method enables the wireless sensor network to obtain better balance in four aspects of positioning precision, robustness, upgradability and system resource saving.network to obtain better balance in four aspects of positioning precision, robustness, upgradability and system resource saving.

Description

technical field [0001] The invention relates to a method for selecting a network node, in particular to a method for selecting a wireless sensor network ad hoc node. Background technique [0002] The rapid development of technologies such as wireless communication, integrated circuits, sensors, and micro-electromechanical systems has made it possible to mass produce low-cost, low-power, and multi-functional miniature wireless sensors. These miniature wireless sensors have wireless communication, data acquisition, distributed processing, Collaboration and other functions and features. A wireless sensor network is a network composed of a large number of randomly distributed nodes integrated with sensors, data processing units and communication modules through self-organization. Its purpose is to cooperatively perceive, collect, process and release target information in the coverage area. and inform the user of this information. [0003] The wireless sensor network for pure a...

AI Technical Summary

Problems solved by technology

[0004]Currently, the node selection method in the prior art is a selection method based on global node location information, using all nodes in the network as candidate nodes, not only using approximate traversal The method selects the combination of nodes, and also requires each node to master the location information of all nodes in the network, which has defects such as large computing burden, large storage requirements, complex structure, and weak robustness and scalability.

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