Underground moving target optical fingerprint positioning and tracking method based on visible light communication

A technology of visible light communication, positioning and tracking, which is applied in the field of optical fingerprint positioning and tracking of underground moving targets based on visible light communication, and can solve problems such as instability, system complexity, and large errors

Active Publication Date: 2013-07-10
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide an optical fingerprint positioning and tracking method for underground moving targets based on visible light communication, so as to solve the problems of system complexity, instability, and large errors in the process of positioning and tracking using wireless radio frequency in existing coal mines

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  • Underground moving target optical fingerprint positioning and tracking method based on visible light communication
  • Underground moving target optical fingerprint positioning and tracking method based on visible light communication
  • Underground moving target optical fingerprint positioning and tracking method based on visible light communication

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Embodiment 1

[0045] The present invention is based on the visible light communication fingerprint positioning and tracking method for underground moving targets. First, the fingerprint database is established in the offline stage, and in the online stage, the characteristics of the received target optical signal are matched with those in the fingerprint database to estimate the position of the target. Its specific implementation method is as follows:

[0046] 1. Offline fingerprint database establishment stage

[0047] (1) Divide the roadway into areas according to the above method. In order to improve the utilization efficiency of the optical fingerprint database, the present invention stipulates that a regional optical fingerprint database is established every 50 meters or so, and the length will contain 5-8 lighting base stations and corresponding beacon point information. Depending on the length of the roadway and the physical topology, the entire mine optical fingerprint database can...

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Abstract

The invention discloses an underground moving target optical fingerprint positioning and tracking method based on visible light communication and belongs to an underground moving target positioning and tracking method for a coal mine. The method comprises the following steps: establishing an optical fingerprint database in an offline stage, and positioning and tracking a target in a fingerprint matching mode in an online stage; detecting a signal of an illuminating lamp base station through the carried receiver in the moving process of the moving target, and transmitting the calculated information to the illuminating lamp base station; receiving the user information through the illuminating lamp base station, calculating the direction information of the user signal, which is relative to the base station, and assembling the arrival angle information, the ID of the base station, the light signal intensity transmitted by the moving target, and the target ID into a positioning data packet which is transmitted to a positioning server; and calculating the position of the target through the positioning server. The moving direction of the target is tracked in real time through the illuminating lamp base station by utilizing the blind adaptive multi-light source detecting algorithm based on the receiving intensity, the accurate position of the target is obtained, and positioning tracking is realized. The method has the advantage that the position of the target can be accurately and effectively estimated.

Description

technical field [0001] The invention relates to a method for locating and tracking an underground moving target in a coal mine, in particular to a method for locating and tracking an optical fingerprint of an underground moving target based on visible light communication. Background technique [0002] Due to the huge application potential of target positioning in military, land resources, transportation, navigation and many other aspects, many target positioning methods and practical positioning systems have been researched at home and abroad, especially in the aspect of ground target positioning. Among these methods, it can be divided into two categories: distance-based positioning and distance-free positioning. The former such as TOA, TDOA, AOA, RSSI, etc., after measuring the distance, they can be based on triangulation, approximate measurement, scene analysis, min- Max algorithm, minimum rectangle algorithm and other methods to estimate the coordinate position; the latte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/116G06F17/30G01S1/70
Inventor 胡青松刘伟张申吴立新
Owner CHINA UNIV OF MINING & TECH
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