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A Crowdsourced Fingerprint Based Indoor Fingerprint Map Construction Method

A construction method and technology of fingerprint map, which is applied in the construction of indoor fingerprint map based on crowdsourced fingerprints and the field of indoor positioning based on fingerprints, which can solve the problems of low positioning accuracy, different dimensions and uneven distribution.

Active Publication Date: 2019-08-30
HUAZHONG UNIV OF SCI & TECH
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  • Description
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AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method for building an indoor fingerprint map based on crowdsourcing fingerprints, which solves the problems of inaccurate location labeling, different dimensions and uneven distribution of crowdsourcing fingerprints in the construction of indoor fingerprint maps based on crowdsourcing fingerprints. High and computationally intensive problems

Method used

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  • A Crowdsourced Fingerprint Based Indoor Fingerprint Map Construction Method
  • A Crowdsourced Fingerprint Based Indoor Fingerprint Map Construction Method
  • A Crowdsourced Fingerprint Based Indoor Fingerprint Map Construction Method

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Embodiment Construction

[0095] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0096] Such as figure 1 As shown, the present invention includes the step of grid division, the step of obtaining crowdsourcing fingerprints, the step of crowdsourcing fingerprint splitting, the step of judging the number of crowdsourcing fingerprints, the step of AP screening, the step of directly constructing grid fingerprints and the step of fingerprint surface fitting.

[0097] As an embodiment of the present invention:

[0098] (1) Grid division steps:

[0099] Establish a plane Cartesian coordinate system, such as figure 2 As shown, the planar target area is divided into 6 classrooms and 1 corridor according to its physical structure, a total of 7 non-overlapping functional areas, among which the area of ​​odd-numbered classrooms is 10.5×9.56m 2 , the even-numbered classrooms each have an area of ​​10.5×7.76m 2 , the corridor area i...

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Abstract

The invention discloses an indoor fingerprint map constructing method based on crowdsourcing fingerprint, and belongs to the indoor positioning technology based on the fingerprint. The method is capable of solving the existent problems of constructing the indoor fingerprint map based on the crowdsourcing fingerprint that the positioning accuracy is not high and the calculated amount is larger because the crowdsourcing fingerprint position marking is not accurate, the dimensions are different and the distribution is not uniform, and is used for the technical field of the communication and wireless network. The method comprises a step of grid division, a step of crowdsourcing fingerprint acquisition, a step of crowdsourcing fingerprint resolution, a step of crowdsourcing fingerprint number judgment, a step of AP screening, a step of directly constructing grid fingerprint and a step of fingerprint surface fitting. The method is capable of reducing the workload of the fingerprint acquisition, improving the positioning accuracy, and reducing the workload of the fingerprint comparison.

Description

technical field [0001] The invention belongs to fingerprint-based indoor positioning technology, in particular to a method for building an indoor fingerprint map based on crowdsourced fingerprints, which is used in the technical fields of communication and wireless networks. Background technique [0002] With the continuous development of the mobile Internet, people's demand for indoor location-based information services is increasing. Indoor location-based information services mainly include parking space search, logistics management, and product promotion information push services. At present, a variety of indoor positioning technologies have been developed, mainly including: WiFi positioning, Bluetooth positioning, infrared positioning and so on. Among them, the indoor positioning technology based on WiFi has been extensively studied. The reason is that the large-scale deployment of WiFi signals has greatly saved the cost of infrastructure, and the current smart phones c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/00H04W4/02G06F16/29
Inventor 王邦叶炎珍王忠思刘文予
Owner HUAZHONG UNIV OF SCI & TECH
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