Method and system for dynamically establishing indoor positioning fingerprint database

A technology for indoor positioning and dynamic establishment, which is applied in the computer field, and can solve problems such as the inability to provide a dynamic establishment method for indoor positioning fingerprint databases and the low efficiency of indoor positioning fingerprint database establishment.

Active Publication Date: 2014-04-23
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method and system for dynamically establishing an indoor positioning fingerprint database, aiming to solve the problem of the efficiency of indoor positioning fingerprint database establishment due to the inability of the prior art to provide an effective dynamic establishment method for an indoor positioning fingerprint database. low problem

Method used

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  • Method and system for dynamically establishing indoor positioning fingerprint database
  • Method and system for dynamically establishing indoor positioning fingerprint database
  • Method and system for dynamically establishing indoor positioning fingerprint database

Examples

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Comparison scheme
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Embodiment 1

[0024] figure 1 The implementation process of the method for dynamically establishing the indoor positioning fingerprint library provided by Embodiment 1 of the present invention is shown, and the details are as follows:

[0025] In step S101, the RSSI values ​​of APs on a single wireless channel are collected one by one along the preset moving path, and the position coordinates when the collection of the single wireless channel is completed are recorded to obtain multiple fingerprint samples at the position, the fingerprint The samples are composed of position coordinates, wireless channel identifiers, an AP identifier on the single wireless channel, and corresponding RSSI values.

[0026] In the embodiment of the present invention, multiple APs are deployed in an indoor environment where an indoor positioning fingerprint library needs to be established, and a mobile fingerprint collection device (such as a smartphone , tablet PC, etc.) to collect the fingerprint information...

Embodiment 2

[0038] image 3 The implementation flow of the method for dynamically establishing the indoor positioning fingerprint library provided by Embodiment 2 of the present invention is shown, and the details are as follows:

[0039] In step S301, the RSSI values ​​of APs on a single wireless channel are collected one by one along the preset moving path, and the position coordinates when the collection of the single wireless channel is completed are recorded to obtain multiple fingerprint samples at the position, the fingerprint The samples are composed of position coordinates, wireless channel identifiers, an AP identifier on the single wireless channel, and corresponding RSSI values.

[0040] In the embodiment of the present invention, the mobile fingerprint collection device moves along a preset moving path to collect RSSI values ​​of APs on a single wireless channel one by one, that is, the collection unit of fingerprint information is a single wireless channel. In this way, sin...

Embodiment 3

[0050] Figure 4 The structure of the system for dynamically establishing the indoor positioning fingerprint library provided by the third embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, including:

[0051] The sample acquisition unit 41 is configured to collect the RSSI values ​​of the APs on a single wireless channel one by one along the preset moving path, and record the position coordinates when the acquisition of the single wireless channel is completed, so as to obtain multiple fingerprint samples at the position. The fingerprint sample is composed of position coordinates, wireless channel identification, an AP identification on the single wireless channel and a corresponding RSSI value;

[0052] Sample repeated acquisition triggering unit 42, used to trigger the repeated execution of the sample acquisition unit according to the preset number of fingerprint samp...

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Abstract

The invention is suitable for the technical field of a computer and provides a method and system for dynamically establishing an indoor positioning fingerprint database. The method comprises the following steps: A) collecting RSSI values of APs on a single wireless channel one by one along a preset moving path and recording position coordinates when the single wireless channel acquisition is finished; B) carrying out the step A) repeatively based on fingerprint sample collecting times preset in advance; C) dividing the moving path, obtaining coordinates of central positions of all fingerprint samples in a preset range with each dividing point being the center, and setting the coordinates of the central positions to be the position coordinates of the all fingerprint samples; and D) calculating the average value of the RSSI values of the fingerprint samples with the same position coordinates, the same wireless channel identification and the same AP identification, and storing fingerprint samples formed by the same position coordinates, the same wireless channel identification, the same AP identification and the RSSI average value obtained by calculation to the indoor positioning fingerprint database, thereby improving the establishing efficiency of the fingerprint database.

Description

technical field [0001] The invention belongs to the technical field of computers, in particular to a method and system for dynamically establishing an indoor positioning fingerprint library. Background technique [0002] Location information plays an important role in people's daily life. In unfamiliar environments such as suburbs, exhibition halls, parks, etc., the use of positioning and navigation information can provide more convenient services for visitors to visit. At present, the Global Positioning System (Global Positioning System, GPS for short) is the most common way to obtain the location information of the outdoor environment. However, because satellite signals are easily blocked by various obstacles, GPS and other satellite positioning technologies are not suitable for indoor or tall buildings. At present, wireless indoor positioning technology has developed rapidly and has become a powerful supplement to GPS. [0003] The indoor positioning technology based on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W84/12G06F17/30
Inventor 谭光尹知萌蔡科超蒋洪波
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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