Multi-accuracy node positioning method based on area judgment

A node positioning, multi-precision technology, applied in the direction of electrical components, wireless communication, network planning, etc., can solve the problem that the positioning method cannot meet the WSN node positioning well

Active Publication Date: 2014-11-26
NORTHWEST UNIV
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Problems solved by technology

[0004] The positioning of WSN nodes in the field monitoring area is significantly different from the positioning in the usual environment. Aiming at the fact that the existing positioning methods cannot well meet the current situation of large-scale WSN node positioning in the field, the present invention proposes a method based on area division based on actual task

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  • Multi-accuracy node positioning method based on area judgment
  • Multi-accuracy node positioning method based on area judgment
  • Multi-accuracy node positioning method based on area judgment

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Example Embodiment

[0109] The applicant deploys various types of sensor nodes in the field wireless sensor network monitoring area to collect wildlife-related environmental and survival data so as to effectively protect the wildlife. The deployed nodes include the use of GPS or other positioning technology to directly determine the location A small number of beacon nodes and a large number of unknown nodes whose location information is to be determined. In this solution, the deployment nodes involved are beacon nodes and ordinary nodes. The location information of the beacon node is known, while the location information of the ordinary node is unknown.

[0110] When the entire sensor network is deployed to the monitoring area, since each sensor node is fixed, a coordinate system needs to be established according to the deployment of sensor nodes. Each sensor node in the network corresponds to a fixed coordinate in the coordinate system, and each sensor node The beacon node can send back its locati...

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Abstract

The invention discloses a multi-accuracy node positioning method based on area judgment. The multi-accuracy node positioning method based on area judgment comprises the steps that firstly, a fingerprint information difference value of a beacon node is calculated; secondly, an initial clustering center and the residual beacon nodes are clustered; thirdly, the deployment mode of the beacon nodes is judged; fourthly, a first-stage virtual block not deployed evenly is divided; fifthly, a first-stage virtual block deployed evenly is divided; sixthly, a second-stage virtual block not deployed evenly is divided; seventhly, a second-stage virtual block deployed evenly is divided; eighthly, a positioning tree based on whole-network beacon node distribution characteristics is built; ninthly, unknown nodes are positioned. The multi-accuracy node positioning method based on area judgment has low requirements for the density of beacon nodes in a monitoring area, can realize fine grit positioning, and can obtain the survival data of wild animals more conveniently and flexibly, thereby carrying out effective protection.

Description

technical field [0001] The invention relates to the application technology of a wireless sensor network, in particular to a multi-precision node positioning method based on area determination in wild animal protection and monitoring. Background technique [0002] In wildlife protection, we need to use wireless sensor networks (WSN) to obtain more accurate, real-time, and dynamic information on wild animal populations, environmental information, and individual activity patterns. The wireless sensor network is composed of a large number of independently distributed sensor nodes. The sensors collect the data of the physical environment, and then convert the measurement data of these physical environments into signals, which are aggregated to the base station or data center through the cooperation between nodes. Since the data obtained from wireless sensor network monitoring has a strong location correlation, the data lacking location information is largely useless, so node loca...

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Application Information

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IPC IPC(8): H04W16/18H04W64/00
Inventor 陈晓江汤战勇房鼎益郑欣赵晖聂卫科邢天璋刘晨徐丹任宇辉
Owner NORTHWEST UNIV
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