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Indoor positioning method based on Wi-Fi fingerprints and multi-dimensional scaling analysis

A multi-dimensional scale analysis, indoor positioning technology, applied in electrical components, wireless communication and other directions, can solve the problems of difficult to achieve popularization and application, manpower and time consumption, and achieve the effect of near positioning accuracy, low positioning error and high positioning accuracy

Active Publication Date: 2015-03-04
常州唯实智能物联创新中心有限公司
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AI Technical Summary

Problems solved by technology

[0004] However, there is a big problem with the indoor positioning method based on fingerprints, which is that the on-site survey leads to the consumption of manpower and time, which makes it difficult to achieve popularization and application.

Method used

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  • Indoor positioning method based on Wi-Fi fingerprints and multi-dimensional scaling analysis
  • Indoor positioning method based on Wi-Fi fingerprints and multi-dimensional scaling analysis
  • Indoor positioning method based on Wi-Fi fingerprints and multi-dimensional scaling analysis

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Embodiment

[0090] Example: An experiment was carried out on the 10th floor of a teaching building in Block G of a university, such as Figure 5 As shown, a total of 1600 square meters, 50 rooms. The experiment was carried out in 28 rooms and circular corridors in the southern half, each room was about 3.75 meters * 8 meters in size, and the function detected up to 200 wireless access points. In order to collect fingerprints, 17 users were randomly selected in 17 rooms to conduct the experiment. The experiment lasted for a week, collecting 15 hours from 9 to 24 every day. A total of 2,400 user tracks and about 480,000 fingerprints were collected.

[0091] In the embodiment, the indoor positioning demonstration system realized by the method of the present invention is named WicLoc, and the positioning error of the system WicLoc realized by the method of the present invention is compared with the LiFS system and the EZ positioning system. The positioning error is defined as the Euclidean dist...

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Abstract

The invention provides an indoor positioning method based on Wi-Fi fingerprints and multi-dimensional scaling analysis. In the method, acquisition of user's behaviors and Wi-Fi signals is performed with crowdsourcing thoughts to replace the present site investigation based on the fingerprint method; a fingerprint model identifies position information of each Wi-Fi signal on a user track, distributes the position information to the corresponding position and acquires fingerprint information of each sampling point; the standard K-near neighbor algorithm is improved and different weights are distributed to each wireless access point, so that the positioning of room stage can be realized; in order to obtain users' absolute coordinate positions and describe user's walking tracks in a room, the multi-dimensional scaling analysis method is improved; the results of the multi-dimensional scaling analysis method is further corrected by using the corner of a corridor and the door of the room as the key points, so that the user's more accurate absolute coordinate positions can be obtained. According to the indoor positioning method based on Wi-Fi fingerprints and multi-dimensional scaling analysis, the site investigation stage is omitted and the indoor positioning precision is improved.

Description

Technical field [0001] The invention belongs to the field of indoor positioning, and specifically relates to an indoor positioning method based on Wi-Fi fingerprints and multi-dimensional scale analysis. Background technique [0002] In recent years, with the popularization and rapid development of wireless communication, embedded technology, sensor technology, wireless local area network, Wi-Fi technology, and pervasive computing technology, as well as the increasing requirements for indoor location information, indoor positioning technology has Become a hot research topic. Indoor positioning technology has broadened the research scope of wireless sensor networks and mobile computing, and many technological innovations and applications have emerged. Therefore, it has attracted the attention of researchers and has been published in conferences and journals in related fields such as computer networks and wireless sensors. (Such as MOBICOM, MOBISYS, ICC, WCNC, IPCC, TMC, TWC, WCET...

Claims

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Application Information

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IPC IPC(8): H04W64/00
CPCH04W64/00H04W64/006
Inventor 牛建伟王博伟黄沙骆王磊
Owner 常州唯实智能物联创新中心有限公司
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