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Wireless sensor network node positioning method

A wireless sensor and network node technology, applied in the field of wireless sensing, can solve the problems of high positioning cost, large positioning error, high complexity requirements of sensor nodes, etc., and achieve the effect of low complexity and low positioning cost.

Active Publication Date: 2013-09-25
ROBO TECHAUTOMATION SUZHOU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the current positioning technology, there is a common problem of large positioning error, and some technologies have high requirements on the complexity of sensor nodes, and the positioning cost is relatively high.

Method used

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  • Wireless sensor network node positioning method
  • Wireless sensor network node positioning method
  • Wireless sensor network node positioning method

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specific Embodiment approach

[0030] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] as attached figure 1 As shown, the wireless sensor network node positioning method provided by the preferred embodiment of the present invention includes steps S1-S4.

[0032] Step S1: Each anchor node in the network broadcasts a message respectively, and the unknown node listens to the anchor node's message, and exchanges the heard message with neighbor unknown nodes.

[0033] Specifically, when the user initializes the network, the anchor nodes are randomly distributed or regularly distributed in the network, and the number of anchor nodes in the initial state accounts for no less than 10% of the sum of all nodes. Here, the network is an isotropic network, and the anchor node and the unkno...

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Abstract

The invention provides a wireless sensor network node positioning method which comprises the following steps of: S1, respectively broadcasting a message by each anchor node in a network, and making an unknown node detect the messages of the anchor nodes and exchange the own detected message with that detected by an adjacent unknown node; S2, forming a triangle by any three anchor nodes in the network, testing whether each triangle comprises the unknown node, and marking the triangle including the unknown node; S3, uniformly dividing the network into a plurality of grids, endowing an initial value 0 to each grid, if a grid is partially or completely covered by the triangle including the unknown node, adding 1 to the value corresponding to the grid, otherwise, subtracting 1 from the value corresponding to the grid; and S4, obtaining the grid with the maximum value after overlapping the triangles, and obtaining a mass center of a triangle overlapping region in the grid with the maximum value, wherein the mass center is the position of the unknown node.

Description

technical field [0001] The invention relates to the field of wireless sensing, in particular to a wireless sensor network node positioning method based on geometric feature analysis. Background technique [0002] With the development of microelectromechanical system, system on chip, wireless communication and digital electronic technology, wireless sensor network, as a new information acquisition and processing mode, has the characteristics of low power consumption, low cost, distribution and self-organization, and has huge application prospects. A wireless sensor network is a wireless network composed of a large number of stationary or moving sensors in a self-organizing and multi-hop manner to cooperatively perceive, collect, process, and transmit information about perceived objects in the geographical area covered by the network, and finally transfer these Information is sent to the owner of the network. [0003] For wireless sensor networks, positioning technology is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W84/18
Inventor 郑建颖张红梅陶砚蕴孙玉娥黄艳汪一鸣
Owner ROBO TECHAUTOMATION SUZHOU CO LTD
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