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RSSI-based weighted neighbor positioning method

A positioning method and a technology of neighbors, applied in the field of network positioning, can solve problems such as inaccurate positioning accuracy, achieve the effects of reducing positioning errors, solving inaccurate positioning accuracy, and improving positioning accuracy

Pending Publication Date: 2021-12-31
HUBEI UNIV OF AUTOMOTIVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a weighted neighbor positioning method based on RSSI, the purpose of which is to solve the problem of inaccurate positioning accuracy caused by nonlinear changes of RSSI values ​​in the propagation process

Method used

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  • RSSI-based weighted neighbor positioning method
  • RSSI-based weighted neighbor positioning method
  • RSSI-based weighted neighbor positioning method

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Experimental program
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Embodiment Construction

[0035] Such as figure 1 Shown, a kind of weighted neighbor location method based on RSSI comprises the following steps: Step S1: as figure 2 As shown, four anchor nodes 2 are deployed at the boundary of the test area 1, and a node is placed in the test area as a reference node 3. The reference node periodically sends its own location information to the four anchor nodes, and the four anchor nodes send the received The received information is extracted and forwarded to the computer; during the collection process, the reference node periodically sends its own message at an interval of 0.5s, and the collection time is set to 60s, which is beneficial to eliminate signal fluctuations caused by the test environment and ensure the accuracy of the signal ;

[0036] Step S2: if image 3 As shown in , the information sent by the reference node on 165 test bits 4 in the test area is collected. The content of the information is as follows: information source number, RSSI value, and phy...

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Abstract

The invention discloses a weighted neighbor positioning method based on RSSI. The method comprises the following steps:s1, deploying reference nodes in a test area; s2, collecting information of reference nodes; s3, summarizing the information acquired in the step S2 into a fingerprint database; s4, deploying an unknown node, and collecting information of the unknown node; s5, integrating and processing the data in S3 and S4, and taking the data as a positioning data set. s6, converting all RSSI data in the fingerprint database into distances, S7, obtaining derivation function values, and summarizing the derivation function values into a positioning data set to serve as reference point weight materials, S8, acquiring the positioning coordinates of unknown nodes are obtained, s9, calculating the positioning errors of the unknown nodes through the S8 and the collected coordinate values. According to the method, the propagation function of the signal strength is taken as a research object, the problem of inaccurate positioning precision caused by nonlinear change of the RSSI value in the propagation process is solved, the positioning error is reduced, and the positioning precision is improved.

Description

technical field [0001] The invention belongs to the technical field of network positioning, in particular to an RSSI-based weighted neighbor positioning method. Background technique [0002] The self-propelled trolley conveyor system is a commonly used intelligent conveyor equipment, which has been widely used in industries and fields such as automobiles, construction machinery, machinery manufacturing, light industry, tobacco, chemical industry, and automated warehouses. Traditional self-propelled trolleys are controlled by wired communication, and data communication is performed through trolley lines. This method has disadvantages such as limited information exchange, complicated electrical installation, and high failure rate, which can no longer meet the growing process and performance requirements. [0003] The digitization and intelligence of the workshop is an inevitable trend in the development of enterprise informatization. At present, there are common problems in t...

Claims

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Application Information

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IPC IPC(8): G01S5/02G01S5/06H04W64/00
CPCG01S5/0252G01S5/0278G01S5/0295G01S5/06H04W64/00
Inventor 金宏平金政
Owner HUBEI UNIV OF AUTOMOTIVE TECH