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Method for positioning mobile node of wireless sensor network based on crossed particle swarm

A wireless sensor and mobile node technology, which is applied in location-based services, wireless communications, network topology, etc., and can solve the problems of poor positioning accuracy, low efficiency, and long positioning operation time.

Inactive Publication Date: 2013-05-29
HENAN UNIV OF SCI & TECH
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Problems solved by technology

[0013] The purpose of the present invention is to provide a wireless sensor network mobile node positioning method based on cross-particle swarm, to solve the problems of long positioning operation time, low efficiency, poor positioning accuracy and positioning repeatability in existing positioning methods

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  • Method for positioning mobile node of wireless sensor network based on crossed particle swarm
  • Method for positioning mobile node of wireless sensor network based on crossed particle swarm
  • Method for positioning mobile node of wireless sensor network based on crossed particle swarm

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0050] Method thought of the present invention is:

[0051] Step 1), deploy the anchor node;

[0052] Step 2), the mobile node broadcasts positioning requests to all anchor nodes in the network and receives broadcast information from normal anchor nodes;

[0053] Step 3), calculate the measurement distance between the mobile node and the corresponding anchor node through the RSSI ranging method;

[0054] Step 4), the normal anchor node information and the measured distance obtained in step 3) are substituted into the cross particle swarm positioning algorithm for optimization calculation; the essence of the standard particle swarm optimization algorithm is to use the information of individual extremum and global optimal value to guide Particle next iteration direction and position. For high-dimensional and complex optimization problems, the standard partic...

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Abstract

The invention relates to a method for positioning a mobile node of a wireless sensor network based on a crossed particle swarm. After the deployment of anchor nodes is finished, the mobile node enters a greenhouse area, and broadcasts and sends a positioning request to all anchor nodes in a network; the mobile node receives the broadcast information of normal anchor nodes, measurement distance between the mobile node and the corresponding anchor node is obtained by calculation, and the measurement distance is corrected by using error coefficients of each anchor node; the mobile node substitutes the information of the normal anchor nodes and the corrected distance into a crossed particle swarm positioning algorithm for optimal calculation; and the algorithm outputs a cluster optimal position as an estimated coordinate of the mobile node. The coordinate of the mobile node is accurately estimated. The method is high in convergence speed, low in calculation complexity, perfect, and high in positioning performance.

Description

technical field [0001] The invention relates to a mobile node positioning method of a wireless sensor network based on a cross particle swarm, and is especially suitable for a greenhouse wireless sensor network. Background technique [0002] Wireless sensor network (wireless sensor network, WSNs) is composed of a large number of cheap micro sensor nodes deployed in the monitoring area, which integrates sensor technology, embedded computing technology, distributed information processing technology and wireless communication technology, and communicates with the outside world through sensors. It has been widely used in precision agriculture, environmental monitoring, military applications and scientific research and other fields. One of the most basic functions of a wireless sensor network is to know the location information of the event or the node location of the information in real time. [0003] With the development of engineering technology, the greenhouse area continues...

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Application Information

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IPC IPC(8): H04W4/02H04W64/00H04W84/18
Inventor 王俊张伏李树强邱兆美毛鹏军
Owner HENAN UNIV OF SCI & TECH
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