Method and device for indoor positioning using magnetic field properties
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United States of America Patent
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Apr 28, 2015
Grant Date -
Nov 21, 2013
app pub date -
Jul 23, 2013
filing date -
Feb 9, 2011
priority date (Note) -
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Abstract
The present invention relates to a method for positioning a user inside a building, wherein the user has a user carried device and the device is provided with a direction sensor and a movement sensor. The method includes providing the user carried device with a vector map of the building, wherein the vector map includes vectors and nodes representing possible movement paths for the user in the building; determining a starting point in the vector map, receiving movement information from the movement sensor, receiving direction information from the direction sensor, receiving a magnetic field map at the user carried device, wherein the magnetic field is detectable by the user carried device, and estimating a new position of the user based on the vector map, the movement information, the direction information and the property map.
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