Method for locating wireless sensing network node base on RSSI

A wireless sensor network, node positioning technology, applied in the field of electrical communication, can solve problems such as large errors and unfavorable application of miners positioning system

Inactive Publication Date: 2009-03-04
SUZHOU INST FOR ADVANCED STUDY USTC
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  • Abstract
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Problems solved by technology

However, this method still has a large error, which is not conducive to the application in the miner positioning system of the wireless sensor network.

Method used

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  • Method for locating wireless sensing network node base on RSSI
  • Method for locating wireless sensing network node base on RSSI
  • Method for locating wireless sensing network node base on RSSI

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Embodiment Construction

[0014] A wireless sensor network node positioning method based on RSSI verification, involving anchor nodes and mobile nodes in the wireless sensor network, its special feature is: using the distance and signal strength information between anchor nodes as a reference, the mobile The RSSI value between the node and the anchor node is checked to correct the weight of the anchor node to the position of the unknown node and obtain the node location, including the following steps:

[0015] Step 1: Take RSSI i Indicates that the mobile node M receives the anchor node B i Mean RSSI of the signal, P i Indicates that the mobile node M receives the anchor node B i The average value of the signal strength of , forming the general formula P i = 10 RSSI i / 10 ;

[0016] Step 2: Take RSSI ij Indicates mobile n...

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Abstract

The invention relates to a wireless sensor network node positioning method based on RSSI verification, belonging to the field of electric communication technique; the method is characterized in that: distance between anchor nodes and signal strength information are taken as references; RSSI values between movable nodes and the anchor nodes are verified so as to rectify the weight of the anchor nodes on unknown nodes, thus gaining the node positioning; after the method is adopted, the node positioning of wireless sensor network with higher precision is realized, and the method is especially suitable to the movable object positioning and tracking application of the wireless sensor network such as underground miner management system and the like.

Description

technical field [0001] The invention relates to a positioning method, in particular to a wireless sensor network node positioning method based on RSSI verification, and belongs to the technical field of electrical communication. Background technique [0002] In the positioning and tracking system of mobile nodes or objects, the wireless sensor network usually includes a certain number of anchor nodes and sensing nodes, where the anchor node is a node that knows its physical location information in the system, such as a global positioning system (GPS) devices, etc., these nodes generally remain stationary in the system. The anchor node periodically sends detection packets, and the sensor node calculates RSSI (Received Signal Strength Indicator) information based on the received detection packets, and assembles an RSSI packet into a multi-hop route and sends it to the server. To calculate the current real-time position of each sensing node. [0003] Further, since there is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04B7/26
Inventor 黄刘生徐宏力吴俊敏王继春李善亮
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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