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Indoor positioning fingerprint database construction method based on crowd sensing

A technology of indoor positioning and construction method, which can be used in services, positioning, and measuring devices based on specific environments, and can solve problems such as labor and time consumption

Inactive Publication Date: 2018-09-11
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem that a lot of manpower and time are consumed in fingerprint database construction in fingerprint positioning, the purpose of the present invention is to provide a highly efficient fingerprint database construction method

Method used

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  • Indoor positioning fingerprint database construction method based on crowd sensing
  • Indoor positioning fingerprint database construction method based on crowd sensing
  • Indoor positioning fingerprint database construction method based on crowd sensing

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Embodiment Construction

[0014] A method for constructing an indoor positioning fingerprint library based on crowd sensing according to the present invention will be further described below in conjunction with the accompanying drawings.

[0015] The present invention first collects the received signal strength of the wireless access point by means of crowd sensing to obtain the original fingerprint data set. Crowdsensing uses a large number of ordinary users to use mobile devices such as mobile phones and tablets as the basic perception unit. Collaborate through the mobile Internet to realize the distribution of sensing tasks and the utilization of sensing data, which greatly improves the efficiency of building fingerprint databases and also realizes real-time updates of fingerprint databases. At the same time, it solves the two major problems of fingerprint data acquired by crowd sensing - data redundancy and fingerprint annotation, and proposes a fingerprint library construction method based on unsu...

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Abstract

The invention relates to an indoor positioning fingerprint database construction method based on crowd sensing. The method includes: acquiring fingerprint data in a target area within a period in themanner of crowd sensing, and establishing a fingerprint data model; initializing a prototype fingerprint quantity, quantifying an original fingerprint data set F by employing a learning vector to obtain a set of prototype fingerprints, and performing spatial clustering division on the fingerprints; and calculating an Euclidean distance between the prototype fingerprints, establishing a dissimilarity matrix, matching the prototype fingerprints and physical position tags by employing a multidimensional scale algorithm, and finally generating a fingerprint database data model. The method is advantaged by high construction efficiency.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and relates to a construction method of a location fingerprint database. Background technique [0002] With the continuous development of location service technology, indoor positioning plays an increasingly important role in various application fields. For indoor positioning, many solutions have been proposed, such as Time of Arrival (TOA), Angle of Arrival (AOA), Received Signal Strength (RSS), Phase Difference of Arrival (PDOA) and hybrid methods. Among them, the indoor positioning system based on RSS has a wide range of applications. Because they do not require additional hardware deployment. They can be implemented by wireless local area network (WLAN), radio frequency identification device (RFID), ultra-wideband (UWB), Bluetooth, ZigBee and other devices. Most RSS-based indoor positioning methods are divided into two categories: odometry and fingerprinting. The former uses th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02H04W64/00H04W4/33
CPCG01S5/0252H04W64/00H04W4/33
Inventor 马永涛刘康伟
Owner TIANJIN UNIV
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