Enhanced door detection

Patent metadata

Field	Value
Publication number	US-11066276-B2
Application number	US-201815966652-A
Country	US
Kind code	B2
Filing date	Apr 30, 2018
Priority date	Apr 30, 2018
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A door control system is provided. Aspects includes a sensor having a field of view in proximity to a door threshold of an entrance to an occupancy area, wherein the sensor is adapted to detect objects in the door threshold and a landing area proximate to the door threshold, wherein the sensor is operated based on a movement of a door in the door threshold. And based at least upon detecting an object within a portion of the door threshold or the landing area, the sensor operable to signal a door operation controller to perform an action.

First claim

What is claimed is:

1. A door control system comprising:
a sensor having a field of view in proximity to a door threshold of an entrance to an occupancy area, wherein the sensor is adapted to detect objects in the door threshold and a landing area proximate to the door threshold;
wherein the sensor is operated based on a movement of a door in the door threshold, wherein operating the sensor comprises adjusting the field of view of the sensor as a door closes across the door threshold; and
based at least upon detecting an object within a portion of the door threshold or the landing area, the sensor operable to signal a door operation controller to perform an action.

2. The door control system of claim 1 , wherein the sensor is mechanically coupled to the door.

3. The door control system of claim 2 , wherein the field of view of the sensor is adjusted by movement of the door based on the mechanical coupling.

4. The door control system of claim 1 , wherein operating the sensor comprises adjusting the field of view of the sensor in the door threshold.

5. The door control system of claim 1 , wherein operating the sensor comprises adjusting the field of view of the sensor in the landing area proximate to the door threshold.

6. The door control system of claim 1 , wherein operating the sensor based at least in part on the movement of the door comprises:
responsively adjusting the sensor to align a center of the field of view within an opening defined by the door in the door threshold.

7. The door control system of claim 6 , wherein adjusting the sensor comprises at least one of:
panning the sensor, tilting the sensor, and adjusting a zoom of the sensor.

8. The door control system of claim 1 , wherein the door control system further comprises:
a light curtain in proximity to the door, wherein the light curtain is adapted to detect objects in the door threshold when the door is in an open state.

9. The door control system of claim 1 , wherein the sensor comprises at least one of:
a radar sensor, a time of flight sensor, an infrared sensor, a three dimensional light curtain, and an optical sensor.

10. The door control system of claim 1 , wherein the action comprises engaging a security measure for the door.

11. The door control system of claim 1 , wherein adjusting the field of view of the sensor as the door closes across the door threshold comprises changing orientation of the sensor as the door closes, wherein a center of the field of view is rotated to stay within an opened portion of the door threshold.

12. The door control system of claim 1 , wherein adjusting the field of view of the sensor comprises adjusting the field of view of the sensor electronically or mechanically.

13. A method for operating a door control system, the door control system comprising a sensor having a field of view in proximity to a door threshold of an entrance to an occupancy area, wherein the sensor is adapted to detect objects in the door threshold and a landing area proximate to the door, the method comprising:
operating the sensor based at least in part on a movement of the door in the door threshold, wherein operating the sensor comprises adjusting the field of view of the sensor as a door closes across the door threshold; and
based at least upon detecting an object within a portion of the door threshold or the landing area, signaling a door operation controller to perform an action.

14. The method of claim 13 , wherein the sensor is mechanically coupled to the door.

15. The method of claim 14 , wherein the field of view of the sensor is adjusted by movement of the door based on the mechanical coupling.

16. The method of claim 13 , wherein operating the sensor comprises adjusting the field of view of the sensor in the door threshold.

17. The method of claim 13 , wherein operating the sensor comprises adjusting the field of view of the sensor in the landing area proximate to the door threshold.

18. The method of claim 13 , wherein operating the sensor based at least in part on the movement of the door comprises:
responsively adjusting the sensor to align a center of the field of view with an opening defined by the door in the door threshold.

19. The method of claim 18 , wherein adjusting the sensor comprises at least one of:
panning the sensor, tilting the sensor, and adjusting a zoom of the sensor.

20. The method of claim 13 , wherein the door control system further comprises:
a light curtain affixed to the door, wherein the light curtain is adapted to detect objects in the door threshold when the door is in an open state.

21. The method of claim 13 , wherein adjusting the field of view of the sensor as the door closes across the door threshold comprises changing orientation of the sensor as the door closes, wherein a center of the field of view is rotated to stay within an opened portion of the door threshold.

22. The method of claim 13 , wherein adjusting the field of view of the sensor comprises adjusting the field of view of the sensor electronically or mechanically.

Assignees

• Otis Elevator Co

Inventors

• Schmidt Walter Thomas
• Djuknic Goran
• Hootsmans Norbert Antony Murray

Classifications

• E05Y2900/104

  for elevators · CPC title

• E05F15/73

  responsive to movement or presence of persons or objects · CPC title

• E05F2015/765

  using optical sensors · CPC title

• E05F15/43

  responsive to disruption of energy beams, e.g. light or sound · CPC title

• E05Y2900/132

  Doors · CPC title