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Wireless sensor network (WSN) positioning method based on double mobile beacons

A technology of mobile beacons and positioning methods, applied in wireless communication, advanced technology, electrical components, etc., can solve problems such as projection point error, unfavorable WSN node energy saving, large positioning error, etc.

Active Publication Date: 2013-09-18
BEIJING CNTEN SMART TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

Although the above two methods have given novel positioning ideas, the positioning performance of the literature [1] is affected by the RSSI measurement value, and the fluctuation of the RSSI is likely to cause errors in the projection point, resulting in a large positioning error; the method of the literature [2] Nodes to be positioned need to respond to beacon information periodically and frequently, which is not conducive to energy saving of WSN nodes
[0006] Positioning technology is one of the key supporting technologies in the WSN network. In the WSN network using mobile beacons, the existing technology uses a mobile beacon for positioning, which requires multiple communications with the node to be positioned during the positioning process, resulting in large Energy consumption and time overhead

Method used

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  • Wireless sensor network (WSN) positioning method based on double mobile beacons
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  • Wireless sensor network (WSN) positioning method based on double mobile beacons

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Embodiment Construction

[0022] The specific technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] Set reference positioning scenarios such as figure 1 As shown, the scene is a square area with side length 100(m), M 1 The communication range R 1 =100(m), M 2 The communication range R 2 =50(m), the distance between the two mobile beacons is d=50(m), moving from a distance to this area at a uniform speed along the horizontal centerline of the square area at a speed of v=2m / s, the broadcast period of the two mobile beacons is T f (s) = 2s.

[0024] The steps of the present invention under the above implementation conditions are:

[0025] Step 1. Both mobile beacons start with T f(s) = 2s periodic broadcast beacon message, the broadcast beacon message includes the current message sending time, broadcast time interval, and the current coordinates of the beacon, the example model is as follows figure 2 shown;

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Abstract

The invention discloses a WSN positioning method based on double mobile beacons. The double mobile beacons are used for completing positioning cooperatively. By means of the WSN positioning method, the problems of overlarge energy consumption and time costs caused by traditional single beacon positioning are solved, node energy consumption is reduced, time costs are decreased, and the method can be applied to positioning of nodes to be positioned in the WSN.

Description

technical field [0001] The present invention relates to a wireless sensor network (WSN): Wireless Sensor Networking, in particular to a WSN positioning method based on dual mobile beacons, that is, the H04W wireless communication network, and the H04W40 / 20 is based on geographic location or positioning. Background technique [0002] Through the deployment of wireless sensor nodes, the wireless sensor network completes the tasks of data collection, caching, transmission and fusion in the coverage area with the support of wireless communication networking technology, data management technology, transmission and routing technology, node positioning and synchronization and other technologies. . It has a series of characteristics such as low power consumption, miniaturization, low price, and self-organization. In recent years, with the development of micro-electromechanical systems, on-chip systems, embedded systems, wireless communication technology, digital technology, etc., t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W56/00
CPCY02D30/70
Inventor 朱轶石振波倪亚楠施佳
Owner BEIJING CNTEN SMART TECH CO LTD
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