Granted Patent B2

US 12,404,684 · App. 17/907,164 · Granted Sep 2, 2025

Inventors: Frederic Achard (Saint-Ouen, FR); Christopher Coat (Ecos, FR); Pierre Chigot (Helsingborg, SE)

Assignee: SAINT-GOBAIN ECOPHON AB

E04F21/1883E04B9/06G01C15/006G06F30/13

Abstract

Claims (28)

1. A method for installation of a ceiling system attached to a structural ceiling surface, the method comprising:

illuminating, in sequence and by a projector, different subsets of a set of optical sensors separately arranged in a known distribution pattern on the structural ceiling surface, wherein each optical sensor of the set of optical sensors being arranged to output a temporal signal indicative of a level of illumination,

determining an image plane relative to the projector based on the known distribution pattern of the set of optical sensors and the outputted temporal signals of each of the optical sensors, and

displaying, by the projector, an image indicative of installation locations of the ceiling system at the image plane.

2. The method according to claim 1 , wherein the ceiling system comprises a grid of profiles comprising a plurality of primary profiles, and

wherein the displaying the image comprises displaying information indicative of installation locations of the primary profiles at the image plane.

3. The method according to claim 1 , wherein the determining the image plane comprises determining the image plane such that the image plane includes physical locations of the optical sensors of the set of optical sensors.

4. The method according to claim 1 , wherein the displaying the image comprises displaying the image on the structural ceiling surface.

5. The method according to claim 4 , wherein the displaying the image comprises calculating a projective transform based on a location of the projector relative to the image plane, and

applying the projective transform to the image such that the displayed image is compensated for size and wrap with respect to the structural ceiling surface.

6. The method according to claim 1 , wherein the determining the image plane comprises determining a rotation of the projector relative to a desired direction of the installation locations of the ceiling system at the image plane based on the known distribution pattern of the set of optical sensors and the outputted temporal signals of each of the optical sensors, and

wherein the displaying the image comprises compensating a rotation of the image based on the determined rotation.

7. The method according to claim 1 , wherein the displaying the image comprises adjusting a position of the image at the image plane based on building information model (BIM) data.

8. The method according to claim 1 , wherein the displaying the image comprises adjusting a position of the image at the image plane based on a user-initiated input signal.

9. The method according to claim 2 , wherein the optical sensors of the set of optical sensors are arranged at locations corresponding to junctions of the grid of profiles.

10. The method according to claim 1 , wherein the optical sensors of the set of optical sensors are arranged on a common substrate which is adapted to be arranged at the structural ceiling surface.

11. The method according to claim 1 , wherein the displaying the image comprises displaying installation guidance based on building information model (BIM) data.

12. The method according to claim 11 , wherein the displaying the image comprises displaying fix points of the ceiling system to be installed.

13. The method according to claim 11 , wherein the displaying the image comprises displaying forbidden areas for fix points of the ceiling system to be installed.

14. The method according to claim 11 , wherein the displaying the image comprises displaying fix points of primary profiles to be installed.

15. The method according to claim 11 , wherein the displaying the image comprises displaying forbidden areas for fix points of primary profiles to be installed.

16. The method according to claim 1 , wherein the displaying the image further comprises displaying building information model (BIM) data.

17. The method according to claim 1 , wherein the illuminating different subsets of the set of optical sensors comprises:

illuminating, in sequence, different subsets of the set of optical sensors according to a first predetermined dichotomy pattern along a first major direction, and

illuminating, in sequence, different subsets of the set of optical sensors according to a second predetermined dichotomy pattern along a second major direction, the first major direction being perpendicular to the second major direction.

18. The method according to claim 1 , further comprising:

arranging a second projector, separate from the projector, at a distance from the structural ceiling surface, and

displaying, by the projector and the second projector, the image indicative of installation locations of the ceiling system at the image plane.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (10)