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Grid based wireless sensor network fuzzy-locating method

A wireless sensor and fuzzy positioning technology, which is applied in wireless communication, network topology, electrical components, etc., can solve the problems of decreased positioning accuracy and achieve good positioning performance and perfect methods

Inactive Publication Date: 2012-07-25
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Benefits of technology

This patented technology helps us find where we are at risk for certain things like missing or damaged equipment on an electric power line network accurately based upon data from various sources. It involves analyzing factors that affect how well these items can function properly during operation (such as weather conditions) before they become critical issues with safety concerns. By incorporating this analysis into our algorithm's process, it becomes possible to make sure there will always stay within safe limits when working correctly without any problems caused due to incorrect placement.

Problems solved by technology

This patented technical issue addressed in this patents relates to developing a more efficient way to locate sensors within IoT systems without relying solely upon battery supply sources like batteries. Current solutions involve either global positioning techniques or time-consumption measurements, which may result in partial knowledge being lost due to incorrect calculations caused by factors other than just physical connections. To address these issues, proposes utilizing wireless sensor networking called Self-Locating Network Interference Technique (SWIT).

Method used

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  • Grid based wireless sensor network fuzzy-locating method
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  • Grid based wireless sensor network fuzzy-locating method

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Embodiment Construction

[0023] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0024] This method aims at the imperfection of existing wireless sensor network positioning methods based on fuzzy theory, and proposes a grid-based wireless sensor network fuzzy positioning method. This method uses fuzzy theory to deal with the randomness and fuzziness of wireless sensor networks and The D-S evidence theory is introduced to fuse multiple groups of evidence to improve the accuracy of judgment, and finally the clustering method is used to improve the positioning accuracy. Compared with FTLM, the grid-based wireless sensor network fuzzy positioning method has better integrity, and its own universality and positioning performance are also relatively good.

[0025] figure 1 It is a flowchart of a grid-ba...

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Abstract

The invention discloses a grid based wireless sensor network fuzzy-locating method in the technical field of wireless sensor network application. The grid based wireless sensor network fuzzy-locating method includes: transmitting information to a node to be located by anchor nodes, receiving information and build an neighbor anchor node chain table through the node to be located; dividing an area where the sensor network is located into grids in assigned number; computing membership degree of the node to be located to each grid and arranging the node to be located in descending order according to the membership degree; computing average values of sequence numbers of all the grids comprising auxiliary locating points by setting peaks of the grids as the auxiliary locating points to form a sequence (QY); selecting a former first assigning item from the (QY) and setting the centroid of the auxiliary locating point of the corresponding grid as roughly evaluated coordinates of the node to be located; clustering the auxiliary locating points corresponding to the former second assigning item in the (QY) by setting the roughly evaluated coordinates as the initial clustering center and obtaining the coordinates of the node to be located. The grid based wireless sensor network fuzzy-locating method is capable of computing accurate evaluated coordinates of the node to be located, complete and excellent in locating performance.

Description

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Claims

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Application Information

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Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)