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Indoor positioning track analysis method and device

A technology for indoor positioning and trajectory analysis, applied in measurement devices, neural learning methods, biological neural network models, etc., can solve the problems of inaccurate positioning, not considering the jump of positioning points, etc., and achieve the effect of accurate positioning

Pending Publication Date: 2020-09-04
成都众树信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the prior art indoor positioning track analysis method and device do not consider the jump of positioning points, which easily leads to the problem of inaccurate positioning

Method used

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  • Indoor positioning track analysis method and device

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Experimental program
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Effect test

Embodiment 1

[0056] like figure 1 As shown, a method for indoor positioning trajectory analysis, the method includes:

[0057] Step S1: Divide the indoor map into grids, export the coordinates of each grid, and obtain the grid list; the specific process is: draw the grid on the indoor positioning map, and the scale of the grid is consistent with the scale of the indoor positioning map , The size of the grid depends on the size of the map and the accuracy of the positioning technology. The general physical distance is 5 to 7 meters. And the grid is not drawn in the hollowed-out areas and weak electric wells that are not accessible indoors. Export the coordinates of each grid to get the grid list areas: {Node1,Node2,…,NodeN}, where N is the total number of grids, Nodei is the i-th grid, Nodei={i,Xi,Yi, X1i,Y1i}, i is the number, i∈(1,N), Xi is the abscissa of the upper left corner of the i-th grid, Yi is the ordinate of the upper left corner of the i-th grid, X1i is the i-th The abscissa ...

Embodiment 2

[0075] Corresponding to Embodiment 1 of the present invention, Embodiment 2 of the present invention also provides an indoor positioning trajectory analysis device, the device comprising:

[0076] The grid division module is used to divide the indoor map into grids, export the coordinates of each grid, and obtain the grid list;

[0077] The path set acquisition module is used to generate the initial path set reachable between any two grids;

[0078] The training set acquisition module is used to randomly replace the grids with a preset ratio of less than the total number of grids in any path in the initial path set with any grid other than the path to obtain an updated path, and all updated The paths form a training set, execute the training set acquisition module in a loop, and generate a large number of training sets;

[0079] A neural network model building block for constructing a neural network model;

[0080] The trajectory optimization model acquisition module is used...

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Abstract

The invention discloses an indoor positioning track analysis method and device. The method comprises the steps of dividing an indoor map into grids, exporting the coordinates of each grid, and obtaining a grid list; generating a reachable initial path set between every two grids; randomly replacing grids with a preset proportion smaller than the total grid number in any path in the initial path set with any grids except the path to obtain updated paths, and forming a training set by all the updated paths; constructing a neural network model; training the neural network model, and ending the training when the loss function value is minimum to obtain a track optimization model; mapping the original positioning points to grids of an indoor map to obtain a path represented by the grids, and inputting the path into the track optimization model to obtain an accurately positioned behavior track. The method has the advantage that the pedestrian track is accurately positioned under the condition that the indoor positioning point jumps.

Description

technical field [0001] The invention relates to the field of indoor positioning, in particular to a method and device for analyzing an indoor positioning track. Background technique [0002] Existing indoor positioning technologies include Bluetooth, WIFI, cellular, etc. When applied to large shopping malls, airports and other buildings with a large number of hollowed-out areas between floors, there are the following problems: 1. Signals of anchor points between different floors Pass through the hollow area to cause interference, causing floor jumps at anchor points. 2. The signal strength of the anchor point jumps due to signal occlusion, battery change, etc., causing the anchor point to jump between areas that are far away. When the above positioning point data is applied to personal trajectory analysis, it will cause discontinuous trajectory, stay in irrelevant areas, etc., which will cause a lot of interference to trajectory analysis. [0003] Chinese patent applicatio...

Claims

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Application Information

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IPC IPC(8): G01C21/20G06N3/04G06N3/08
CPCG01C21/206G06N3/049G06N3/084G06N3/048G06N3/045
Inventor 刘云华
Owner 成都众树信息科技有限公司
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