Method and apparatus for creating magnetic field map based on floor plan information of building

Patent metadata

Field	Value
Publication number	US-9709375-B2
Application number	US-201313930159-A
Country	US
Kind code	B2
Filing date	Jun 28, 2013
Priority date	Jul 23, 2012
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

Provided are a method and an apparatus for creating a magnetic field map that extracts magnetic field information of a building from floor plan information of the building. The magnetic field map of the building may be generated based on the floor plan information and the magnetic field information.

First claim

What is claimed is:

1. A method of creating a magnetic field map, the method comprising:
receiving floor plan information of a building;
extracting magnetic field information of the building based on the floor plan information of the building;
creating a magnetic field map of the building based on the floor plan information and the magnetic field information,
determining a location of a feature point on the magnetic field map based on the floor plan information and the magnetic field information, wherein the feature point comprises an area in which a change of a magnetic field on the magnetic field map exceeds a predetermined degree of deviation;
creating guide information for measuring a magnetic field with respect to the building based on the feature point; and
providing the guide information to at least one of a mobile terminal and a robot.

2. The method of claim 1 , wherein the floor plan information comprises at least one of a position, a height, a thickness, and a size of a steel frame, a steel bar, and/or piping that is included in the building.

3. The method of claim 1 , wherein the determining the location of the feature point comprises:
setting a position of a section to be measured based on the floor plan information and the magnetic field information;
determining an interval and a location at which a sample magnetic field is to be measured with respect to the section; and
determining the location of the feature point based on the interval and the location at which the sample magnetic field is to be measured.

4. The method of claim 1 , wherein the guide information comprises:
a location in the building at which a magnetic field is to be measured and an interval at which the magnetic field is to be measured.

5. A non-transitory computer-readable medium comprising a program for instructing a computer to perform the method of claim 1 .

6. The method of claim 1 , wherein the extracting the magnetic field information of the building comprises:
calculating a magnetic interference with respect to the building based on the floor plan information; and
extracting the magnetic field information based on the magnetic interference.

7. An apparatus for creating a magnetic field map, the apparatus comprising:
a network module configured to receive floor plan information of a building;
an extracting unit configured to extract magnetic field information of the building based on the floor plan information of the building; and
a map creating unit configured to create a magnetic field map of the building based on the floor plan information and the magnetic field information;
a locating unit configured to determine a location of a feature point on the magnetic field map based on the floor plan information and the magnetic field information, wherein the feature point comprises an area in which a change of a magnetic field on the magnetic field map exceeds a predetermined degree of deviation; and
an information creating unit configured to create guide information for measuring a magnetic field with respect to the building based on the feature point,
wherein the network module is configured to provide the guide information to at least one of a mobile terminal and a robot.

8. The apparatus of claim 7 , wherein the floor plan information comprises at least one of a position, a height, a thickness, and a size of a steel frame, a steel bar, and/or piping that is included in the building.

9. The apparatus of claim 7 , wherein the locating unit is configured to set a section to be measured based on the floor plan information and the magnetic field information, determine an interval and a location at which a sample magnetic field is to be measured with respect to the section, and determine the location of the feature point based on the interval and the location at which the sample magnetic field is to be measured.

10. The apparatus of claim 7 , wherein the guide information comprises:
a location in the building at which a magnetic field is to be measured and an interval at which the magnetic field is to be measured.

11. The apparatus of claim 7 , further comprising:
a storing unit configured to store the floor plan information and the magnetic field information.

12. The apparatus of claim 7 , wherein the extracting unit comprises:
a calculator configured to calculate a magnetic interference with respect to the building based on the floor plan information; and
an extractor configured to extract the magnetic field information based on the magnetic interference.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Seong Eun
• Kim Yong
• Kim Eung Sun
• Ahn Hyun Gi
• Yoon Ji Hyun

Classifications

• G01C21/206

  specially adapted for indoor navigation · CPC title

• G01B7/003 Primary

  for measuring position, not involving coordinate determination (coordinate measuring G01B7/004) · CPC title

• H04W4/04

  Electricity · mapped topic

• G01R33/10 Primary

  Plotting field distribution {; Measuring field distribution} · CPC title

• H04W4/33

  for indoor environments, e.g. buildings · CPC title