INSTALLATION AND METHOD FOR LOCATING BY COUPLING OF AUTONOMOUS MEANS FOR MEASURING A DISPLACEMENT TO WIRELESS MEANS OF MEASUREMENT OF LOCATION DATA SUPPORTS

• US 20140038646A1
• Filed: 04/03/2012
• Published: 02/06/2014
• Est. Priority Date: 04/04/2011
• Status: Abandoned Application

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: Francheteau, Anthony
• Application Number:
  US14/009,946
• Publication Number:
  US 20140038646A1
• Time in Patent Office: Days
• US Class Current: 455/456.6
• CPC Class Codes: G01S 13/751 wherein the responder or reflector radiates a coded signal
• CPC Class Codes: G01S 19/49 whereby the further system is an inertial position system, e.g. loosely-coupled
• CPC Class Codes: H04W 4/025 using location based information parameters
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• CPC Class Codes: H04W 64/003 locating network equipment

Abstract

This method for locating a terminal (12) in a zone, said method comprising:

• • a step (28, 29) of setting the spatial coordinates of the terminal (12), carried out within a geolocation software (16) of the terminal (12);
  • a step (34) of measuring the displacement of the terminal (12) by autonomous means for measuring a displacement (20, 21) which are integrated into the terminal (12);
  • a step (36) of estimating the spatial coordinates, carried out by the geolocation software (16) on the basis of the displacement transmitted by the autonomous means for measuring a displacement (20, 21);
  • a step (30) of displaying the geographical position of the terminal (12) by display means (24) integrated into the terminal (12);
  • is characterised in that it comprises:
  • a step (29) of transmission by a location data support (13) installed permanently on site in the zone, of its geographical position to the terminal (12); and
  • a step (41) of resetting the spatial coordinates of the terminal (12), carried out within the geolocation software (16) on the basis of the geographical position of the location data support (13).

Claims

1-10. -10. (canceled)

11. A method for locating a terminal in a zone, said method comprising:

a step of setting the spatial coordinates of the terminal, carried out within a geolocation software of the terminal;

a step of measuring the displacement of the terminal by autonomous means for measuring a displacement which are integrated into the terminal;

a step of estimating the spatial coordinates, carried out by the geolocation software on the basis of the displacement transmitted by the autonomous means for measuring a displacement;

a step of displaying the geographical position of the terminal by display means integrated into the terminal;

a step of transmission by a location data support installed permanently on site in the zone, of its geographical position to the terminal; and

a step of resetting the spatial coordinates of the terminal, that is carried out within the geolocation software on the basis of the geographical position of the location data support.

12. A method according to claim 11, wherein:

the step of displaying of the geographical position of the terminal on the basis of the spatial coordinates estimated from the displacement transmitted by the autonomous means for measuring a displacement, is carried out only if the software determines that the precision relative to the displacement transmitted by the autonomous means for measuring a displacement is sufficient;

the step of resetting the spatial coordinates is carried out within the geolocation software, when the precision relative to the displacement transmitted by the autonomous means for measuring a displacement is determined to be insufficient by the software.

13. A method according to claim 12, wherein the step of resetting the spatial coordinates is carried out by the voluntary action of a user equipped with the terminal to be located, on the basis of an information message displayed by the terminal following detection of an insufficient precision relative to the displacement transmitted by the autonomous means for measuring a displacement

14. A method according to claim 12, wherein the step of resetting the spatial coordinates is carried out automatically when the terminal to be located enters into a zone of transmission of a location data support.

15. A method according to claim 11, wherein the geolocation software, during the step of displaying, enables the display of the spatial coordinates transmitted by a GPS sensor as long as the latter are available;

and the geolocation software estimates the spatial coordinates of the terminal on the basis of the displacement transmitted by the autonomous means for measuring a displacement and enables the display of the geographical position of the terminal on the basis of the estimated spatial coordinates when the spatial coordinates provided by the GPS sensor are not available.

16. An installation for locating a terminal in a zone, capable of carrying out the method according to claim 11 and comprising within the terminal:

autonomous means for measuring a displacement,

a data processing unit that implements a geolocation software, said unit being interfaced with the autonomous means for measuring a displacement and the display means;

wherein the installation includes at least one location data support that is permanently installed on site in the zone and contains the spatial coordinates of the geographical point where it is installed and the installation comprises wireless measuring means for measuring location data supports, and the geolocation software is capable of carrying out a resetting of the spatial coordinates of the terminal on the basis of the position information read in at least one location data support.

17. An installation according to claim 16, wherein the installation includes, within the terminal a GPS sensor interfaced with the data processing unit.

18. An installation according to claim 16, wherein the autonomous means for measuring a displacement constitute one of the devices that are included in the group consisting of:

a two dimensional inertial unit and a three dimensional inertial unit.

19. An installation according to claim 16, wherein the autonomous means for measuring a displacement are coupled to a magnetometer.

20. An installation according to claim 16, wherein the location data supports constitute one of the devices that are included in the group consisting of:

RFID tags using NFC (Near Field Communication) technology, RFID tags using UHF (Ultra High Frequency) technology and 2D bar codes.