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Bacterial foraging optimization positioning method of unknown sensor node of wireless sensor network

A sensor node and wireless sensor technology, applied in network topology, wireless communication, design optimization/simulation, etc., can solve problems such as complex algorithms and low positioning accuracy of positioning algorithms

Inactive Publication Date: 2018-11-20
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0004] The invention solves the problems of low positioning accuracy and complex algorithm of the existing ranging-based positioning algorithm, and provides a bacterial foraging optimization positioning method for unknown sensor nodes in a wireless sensor network

Method used

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  • Bacterial foraging optimization positioning method of unknown sensor node of wireless sensor network
  • Bacterial foraging optimization positioning method of unknown sensor node of wireless sensor network
  • Bacterial foraging optimization positioning method of unknown sensor node of wireless sensor network

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Embodiment Construction

[0048] The optimal positioning method for bacteria foraging for unknown sensor nodes in a wireless sensor network is realized by the following steps:

[0049] S1: The unknown node P receives the signal of the surrounding beacon nodes, and converts the received signal strength value into the distance value between the unknown node and the beacon node;

[0050] S2: Set the number of beacon nodes that the unknown node P can receive signals to be m, m≥2, take beacon nodes at any two positions as a group, there are k groups in total, and there are two beacon nodes in any group Nodes are represented by A and B;

[0051] S3: Collect the coordinates A(x A ,y A ), B(x B ,y B ); Calculate the distance L between the beacon node A and the beacon node B AB ; The distance between the beacon node A and the unknown node P obtained according to step S1 is denoted as L AP , the distance between the unknown node P and the beacon node B is denoted as L PB ;

[0052] S4: Determine whether ...

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Abstract

The invention relates to the wireless sensor network positioning technology, and specifically relates to a bacterial foraging optimization positioning method of an unknown sensor node of a wireless sensor network for mainly obtaining accurate location information of the unknown sensor node of the wireless sensor network. The problems that the positioning precision of the existing distance measurement based positioning algorithm is low, and that the algorithm is complex are solved. The method provided by the invention comprises the following steps: firstly converting a signal intensity value indirectly received by a node into a node distance value, figuring out two possible coordinates (the formula is shown in the specification) of the unknown node by using know location coordinates of anytwo beacon nodes A and B around the unknown node through the principle of edge-measuring intersection, performing judgment on the coordinates, finally, optimizing the coordinates by using a bacterialforaging algorithm (BFO), and determining that the positioning of the coordinates of the unknown node is completed. By adoption of the method of the invention, the accuracy of the algorithm is improved, the complexity of the algorithm is reduced, the energy consumption of the node is reduced, and the life cycle of the node is prolonged.

Description

technical field [0001] The invention relates to a wireless sensor network positioning technology, in particular to a bacterial foraging optimization positioning method for unknown sensor nodes in the wireless sensor network, which is mainly used for obtaining accurate position information of the unknown sensor nodes in the wireless sensor network. Background technique [0002] In recent years, the Internet of Things technology has continuously achieved new results, and has been applied to the fields of national defense, military, environmental monitoring, traffic management, medical and health care, manufacturing, disaster relief, etc. As one of the underlying technologies of the Internet of Things, wireless sensor networks have become a research area. hotspot. Among them, obtaining accurate location information through positioning algorithms is a very important content of wireless sensor networks. [0003] Positioning algorithms are divided into non-range-based positioning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W64/00H04W84/18G06F17/50
CPCG06F30/20H04W4/023H04W64/006H04W84/18Y02D30/70
Inventor 乔学工周文祥段亚青
Owner TAIYUAN UNIV OF TECH
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