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Positioning and tracking method for nodes in wireless sensor network

A wireless sensor and node technology, applied in wireless communication, electrical components, etc., can solve problems such as no reference value, achieve accurate positioning and tracking, wide application range, and simple network deployment

Inactive Publication Date: 2015-03-25
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Environmental parameters perceived by nodes, such as temperature, humidity, light intensity, etc., need to be supported by geographic location. If the node location cannot be accurately positioned and tracked, the collected information is of no reference value

Method used

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  • Positioning and tracking method for nodes in wireless sensor network
  • Positioning and tracking method for nodes in wireless sensor network
  • Positioning and tracking method for nodes in wireless sensor network

Examples

Experimental program
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Embodiment 1

[0058] A method for positioning and tracking nodes in a wireless sensor network, the method is applied to Figure 1-2 In the shown wireless sensor network, the wireless sensor network includes a host computer (PC), a base station, an anchor node, a beacon node and a blind node, and the host computer has no less than 3 anchor nodes and has a positioning module, and the The method includes the following steps:

[0059] S1: Deploy various nodes. Randomly sow beacon nodes in the area that needs to be monitored. These beacon nodes are initially in a sleep listening state. According to the deployment range of the beacon nodes, deploy no less than 3 anchor nodes.

[0060] S2: The anchor node locates itself through the positioning module, and the anchor node sends positioning information including the coordinates of the anchor node to the surroundings.

[0061] S3: The host computer issues a command to start monitoring, and the base station broadcasts it to all nodes in the monitori...

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Abstract

The invention provides a positioning and tracking method for nodes in a wireless sensor network. The method is applied to the wireless sensor network. The wireless sensor network comprises an upper computer, a base station, the anchor nodes, the beacon nodes and the blind nodes, wherein the number of the anchor nodes is larger than or equal to 3, and each anchor node comprises a positioning module. The method includes the following steps that the anchor nodes are positioned by themselves through the positioning modules and send positioning information to the surrounding environment, wherein the positioning information includes coordinates of the anchor nodes; the beacon nodes are positioned through the positioning information sent by the anchor nodes and send positioning information to the surrounding environment, wherein the positioning information includes coordinates of the beacon nodes; a state equation model and an observation equation model are established for the blind nodes according to the positioning information sent by the beacon nodes or the anchor nodes; the positions and the speeds of the blind nodes are calculated according to the state equation model and the observation equation model. The method is simple in network deployment, accurate in positioning and tracking and wide in application range.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, more specifically, to a method for positioning and tracking nodes in a wireless sensor network. Background technique [0002] Wireless Sensor Networks (WSN) have broad application prospects in the fields of intelligent transportation, military reconnaissance, and field exploration. In WSN, it is often necessary to track and locate specific physical targets in the monitoring area. For example, in emergency rescue and disaster relief, the sensor network deployed in the disaster area can track the location of medical personnel; in war, the army can deploy sensor network on the position to track the location of soldiers and vehicles without GPS support or damaged GPS equipment. However, most of the existing WSN positioning and target tracking algorithms are aimed at static scenarios, that is, beacon nodes are artificially assigned fixedly. When the position of the beacon node changes, its po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
CPCH04W64/00
Inventor 程良伦陈锡剑徐晶刘书强
Owner GUANGDONG UNIV OF TECH
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