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Indoor map generating method based on multi-user track fitting

An indoor map, multi-user technology, used in measuring devices, instruments, surveying and navigation, etc., can solve problems such as complex map generation, achieve reliable data sources, solve map generation problems, and update in real time.

Active Publication Date: 2018-10-26
SOUTHEAST UNIV
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Problems solved by technology

[0003] The present invention is aimed at the technical problems existing in the prior art, and provides an indoor map generation method based on multi-user trajectory fitting. The data is analyzed and processed to achieve the corresponding technical purpose; and the solution has extensive and reliable data sources, which can be updated in real time, does not require professional equipment or technical personnel, and is low-cost, effectively solving the problem of maps under complex indoor conditions. generate questions

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  • Indoor map generating method based on multi-user track fitting
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Embodiment Construction

[0009] The present invention will be further described below in conjunction with the accompanying drawings.

[0010] figure 1 : where 101 represents a mobile terminal, which can be any Android or iOS system with a built-in sensor; 102 represents a low-power beacon module, which conforms to the IEEE 802.11 protocol standard; 103 represents a cloud database, and the server can use a windows or linux system, but it needs to be installed Software for mathematical operations (such as MATLAB) or import java packages for mathematical operations.

[0011] figure 2 For the single-user track generation process of the present invention, comprise the following steps:

[0012] 201 After completing the acquisition of acceleration data in three directions, read out the list of possible air pressure values ​​when the air pressure sensor value is stable (that is, the user is walking on the same floor), according to the empirical formula of air pressure value and altitude (denoted as ) and...

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Abstract

The invention provides an indoor map generating method based on multi-user track fitting. According to the indoor map generating method, a system comprises mobile terminals, low-power-consumption beaconing modules and a cloud database, data including directions, speeds, accelerations, air pressures and the like are acquired through built-in sensors of mobile phones; the acquired data are subjectedto de-noising process to analyze walking statuses of users, walking tracks are generated in the mobile phones for the users respectively, and then deviation points in the tracks are corrected by means of measuring power of the beaconing modules at fixed positions; track data are uploaded to the cloud database by the mobile terminals respectively, so that when a user needs, the track data uploadedby everybody can be downloaded from the could database by a mobile terminal; in the mobile terminal, the track data from everybody are subjected to superposition process, the optimal indoor path canbe analyzed through a track fitting algorithm, and a complete indoor map path can be generated. Compared with a traditional indoor positioning method, the indoor map generating method based on multi-user track fitting has the advantages that cost is low, data are convenient to acquire, the defect that satellite signals are susceptible to interference is overcome, and high safety is realized.

Description

technical field [0001] The invention relates to the field of map generation and data security in the field of computer application and mobile communication, in particular to an indoor map generation method based on multi-user trajectory fitting. Background technique [0002] Nowadays, various mobile phone positioning and outdoor map navigation software have become one of the indispensable software for people. Famous Internet companies such as Baidu and Google have developed map and navigation services. These currently existing map generation software basically rely on satellite communication technology to provide outdoor road distribution, and use path planning algorithms to provide recommended shortest paths. At the same time, some scholars have proposed to use wifi communication to realize map generation and positioning. However, the existing technologies have the following obvious defects: (1) rely too much on GPS satellite signals, which makes it difficult to carry out ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20
CPCG01C21/206
Inventor 薛天昊曹天旸洪磊周灏宋宇波
Owner SOUTHEAST UNIV
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