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Positioning method for non-collinear unknown sensor nodes of wireless sensor network

A wireless sensor and sensor node technology, applied in network topology, wireless communication, service based on specific environment, etc., can solve the problems of low positioning accuracy and complex algorithm of positioning algorithm

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 distance-based positioning algorithm, and provides a positioning method for non-collinear unknown sensor nodes in a wireless sensor network

Method used

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  • Positioning method for non-collinear unknown sensor nodes of wireless sensor network
  • Positioning method for non-collinear unknown sensor nodes of wireless sensor network
  • Positioning method for non-collinear unknown sensor nodes of wireless sensor network

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Embodiment Construction

[0038] The positioning method of the non-collinear unknown sensor nodes in the wireless sensor network is realized by the following steps:

[0039] 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;

[0040] 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;

[0041] 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 ;

[0042] S4: Determine whether the three p...

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Abstract

The invention relates to the technology of wireless sensor network positioning, in particular to a positioning method for non-collinear unknown sensor nodes of a wireless sensor network, which is mainly used for acquiring accurate position information of the non-collinear unknown sensor nodes of the wireless sensor network, and solves the problem that the existing ranging-based positioning algorithm has low positioning accuracy and complicated algorithm. The method provided by the invention firstly converts the signal intensity value received between the nodes into the distance value between the nodes, obtains two possible coordinates (FORMULA referred as follows) of an unknown node by using the known position coordinates of any two beacon nodes A and B around the unknown node based on thelinear intersection principle when the unknown node and any two beacon nodes are not collinear, determines the two possible coordinates, and finally uses the artificial bee colony algorithm for optimization to determine the coordinates of the unknown node to complete the positioning. The method provided by the invention improves the accuracy of the algorithm, reduces the complexity of the algorithm, reduces the energy consumption of the nodes, and prolongs the life cycle of the nodes.

Description

technical field [0001] The invention relates to wireless sensor network positioning technology, in particular to a positioning method for non-collinear unknown sensor nodes in wireless sensor networks, which is mainly used to obtain accurate position information of non-collinear unknown sensor nodes in wireless sensor networks. 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 algorithms (eg, DV-...

Claims

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Application Information

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IPC IPC(8): H04W4/38H04W64/00H04W84/18
CPCH04W4/38H04W64/003H04W84/18Y02D30/70
Inventor 乔学工段亚青周文祥
Owner TAIYUAN UNIV OF TECH
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