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Mobile anchor node based weighted centroid locating method for wireless sensor network node

A mobile anchor node and wireless sensor technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, instruments, etc., can solve problems such as low coverage, complex positioning algorithms, positioning errors, and high cost of anchor nodes

Inactive Publication Date: 2012-09-19
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly solves the problems of high cost of traditional anchor nodes, low coverage rate, complicated positioning algorithm and large positioning error
[0004] The technical solution adopted by the present invention to solve the above problems is: use mobile anchor nodes to generate virtual anchor nodes instead of traditional anchor nodes, which solves the problem of high cost of using a large number of anchor nodes, and uses the Gauss Markov mobile model to use control technology to make the anchor nodes The nodes move according to the optimized movement path, the anchor node notifies the surrounding unknown nodes by sending real-time location signals, and the unknown nodes measure the distance between themselves and the virtual anchor node through RSSI technology

Method used

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  • Mobile anchor node based weighted centroid locating method for wireless sensor network node
  • Mobile anchor node based weighted centroid locating method for wireless sensor network node
  • Mobile anchor node based weighted centroid locating method for wireless sensor network node

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Embodiment Construction

[0009] combine Figure 1 ~ Figure 4 This embodiment is described. This embodiment is a weighted centroid positioning method for wireless sensor network nodes based on mobile anchor nodes. The specific steps are as follows:

[0010] Step 1: Complete the distribution of sensor network nodes, and the nodes are in a sleep state;

[0011] Step 2: Install the anchor node with GPS positioning equipment on the controllable mobile device and enter the area to be tested;

[0012] Step 3: The mobile device obtains a destination point according to the Gaussian Markov movement model. Before moving to the destination point, the distance between the destination point and the previously stored historical coordinate position is pre-judged. When the set value is set, the target point is considered to be valid and moved to this point, otherwise a new target point is regenerated until the target point is valid;

[0013] The moving speed of the mobile device in the next step, the turning angle a...

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Abstract

The invention discloses a mobile anchor node based weighted centroid locating method for a wireless sensor network node and belongs to the field of application of the wireless sensor network and the random mobile technology and the wireless range finding technology. Since a mobile anchor node is utilized to substitute for a traditional anchor node, usage cost is reduced, and coverage rate for unknown nodes is increased. Locations of the unknown nodes can be obtained by scheduling moving path of the anchor node and by the aid of the weighted centroid algorithm. The mobile anchor node based weighted centroid locating method for the wireless sensor network node is low in cost, simple in algorithm, high in coverage rate of unknown nodes, accurate in locating, and applicable to practical use.

Description

technical field [0001] The invention relates to a sensor network node positioning method based on a mobile anchor node, and further relates to a random mobile technology and a wireless ranging technology. Background technique [0002] The wireless sensor network is composed of a large number of cheap micro sensor nodes deployed in the monitoring area, forming a multi-hop self-organizing network system through wireless communication, cooperatively sensing, collecting and processing the information of the sensing objects in the network coverage area, and sending it to Observer, accurate positioning of sensor network nodes is a prerequisite for achieving the above goals. Due to the simple structure, poor computing power and limited energy, ordinary nodes cannot complete positioning completely autonomously. According to whether anchor nodes are required to participate in auxiliary positioning, the existing positioning algorithms are divided into anchor node-based positioning al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/48
Inventor 沈艳霞薛小松赵芝璞吴定会潘庭龙纪志成
Owner JIANGNAN UNIV
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