Indoor floor location method based on air pressure fingerprint

A positioning method and air pressure technology, applied in electrical components, wireless communication, etc., can solve problems such as insufficient two-dimensional positioning, and achieve the effect of promoting better development

Active Publication Date: 2016-10-12
SUNWAVE COMM
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Problems solved by technology

However, in actual commercial applications, only two-dimensional pos

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  • Indoor floor location method based on air pressure fingerprint

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[0042] The specific implementation of the present invention is:

[0043] 1. Offline acquisition phase

[0044] 1.1 Every t minutes, the floor positioning server activates the air pressure collecting device in each floor to collect indoor air pressure data through the communication network. Here, t=60 can be taken.

[0045] 1.2 After the floor air pressure device receives the air pressure collection command, it collects n air pressure data, and sends these data and the floor where it is to the floor positioning server through the communication network. Here, n=30

[0046] 1.3 After the floor positioning server receives the air pressure data returned from each floor, it preprocesses the n air pressure data according to the 3S criterion (lighter criterion). The specific method is as follows:

[0047] Assuming that the collected air pressure data is p 1 ,p 2 ,...,P n , N=30.

[0048] (1) Calculate the sample mean of these n data

[0049] (2) Calculate the sample variance of these n data ...

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Abstract

The invention relates to an Indoor floor location method based on an air pressure fingerprint. The method comprises an offline stage and an online stage. The offline stage comprises the steps of collecting air pressure data of different floors in a target indoor location scene before actual floor location is started, and forming an air pressure fingerprint library after the air pressure data is processed. The online state comprises the steps of collecting air pressure data of a to-be-located location on site when the actual floor location is carried out, comparing the air pressure data with air pressure fingerprints in the air pressure fingerprint library, and selecting the floor corresponding to the most matched air pressure fingerprint as a currently located floor. The method has the advantages that according to the method provided by the patent of the invention, through adoption of an existing indoor plane location method, indoor high-precision three-dimensional location can be realized, thereby facilitating development of indoor location applications and service.

Description

technical field [0001] The invention relates to the field of indoor positioning, in particular to an indoor floor positioning method based on air pressure fingerprints. Background technique [0002] With the gradual improvement of people's living standards and the continuous advancement of wireless communication technology, people's demand for location-based services is increasing day by day. The premise of location-based services is how to obtain location information, that is, how to locate the target, which is divided into outdoor positioning and indoor positioning. At present, with the maturity of satellite positioning systems represented by GPS and Beidou, outdoor positioning is already commercially available. For example, at present, various car navigation systems or smart phone navigation systems use GPS and Beidou satellite positioning, and then assist the completion of outdoor road map information. However, in many indoor environments with complex structures, GPS, ...

Claims

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Application Information

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IPC IPC(8): H04W64/00
CPCH04W64/00H04W64/006
Inventor 姚英彪严军荣潘鹏
Owner SUNWAVE COMM
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