Indoor pedestrian locating system for counting steps based on magnetic field features and accelerated velocity information

A positioning system and acceleration technology, applied in the field of indoor pedestrian positioning system, can solve problems such as loss, affecting positioning effect, unfavorable marketing, etc., and achieve the effect of low power consumption, increased accuracy, and a small number of sensors

Active Publication Date: 2017-12-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows users to accurately locate their own positions by acquiring accurate magnetism (M) signals from an M-sensitive device like smartphones or tablets while walking on footpathways at home or workplaces. It also includes various other features such as GIS databases trained over static maps or street addresses, along with accelerometers attached to shoes worn by people moving around them. Overall, this technology improves efficiency and convenience compared to existing methods.

Problems solved by technology

The technical problem addressed in this patents relates to improving indoor localization techniques while reducing interference caused by electromagnetic waves like radio frequency (RF) communication signals between different sources. This can lead to increased costs associated with installing expensive electronics inside buildings where people stay around during crisis situations.

Method used

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  • Indoor pedestrian locating system for counting steps based on magnetic field features and accelerated velocity information
  • Indoor pedestrian locating system for counting steps based on magnetic field features and accelerated velocity information
  • Indoor pedestrian locating system for counting steps based on magnetic field features and accelerated velocity information

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Embodiment Construction

[0040] The technical solutions proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in very simplified form and use imprecise ratios, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention.

[0041] The present invention utilizes the characteristics of the geomagnetic field, obtains magnetic field information and acceleration information through the magnetic field and acceleration sensor data acquisition module, and uses the acceleration sensor step counting module, magnetic field projection module, inertial sensor and magnetic field fusion module to obtain the magnetic field strength sequence when pedestrians are moving , the geomagnetic matching positioning mod

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Abstract

The invention relates to the technical field of indoor location and navigation and specifically relates to an indoor pedestrian locating system for counting steps based on magnetic field features and accelerated velocity information. The indoor pedestrian locating system comprises a magnetic field and accelerated velocity sensor data acquisition module, an accelerated velocity sensor step counting module, a magnetic field projection module, a magnetic field database training module, an inert sensor and magnetic field fusion module, a geomagnetic matching locating module and an outputting module. According to the indoor pedestrian locating system disclosed by the invention, magnetic field information and accelerated velocity information can be obtained by the magnetic field and accelerated velocity sensor data acquisition module; a magnetic field intensity sequence of a pedestrian in moving can be obtained by the accelerated velocity sensor step counting module, the magnetic field projection module and the inert sensor and magnetic field fusion module; magnetic field data are matched in the geomagnetic matching locating module and the magnetic field database training module to obtain locating results; thus, location can be achieved without installing extra signal emission equipment.

Description

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Claims

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Application Information

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Owner SHANGHAI JIAO TONG UNIV
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