Rope sway mitigation through control of access to elevators

Patent metadata

Field	Value
Publication number	US-9546073-B2
Application number	US-201315024386-A
Country	US
Kind code	B2
Filing date	Sep 24, 2013
Priority date	Sep 24, 2013
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

Embodiments are directed to detecting motion of a building housing a multi-deck elevator system, determining, by a processing device, that the detected motion of the building is greater than a threshold, and controlling access to at least one deck of the elevator system based on determining that the detected motion of the building is greater than the threshold such that the at least one deck still is enabled to traverse a hoist-way of the elevator system.

First claim

What is claimed is:

1. A method comprising:
detecting motion of a building housing a multi-deck elevator system;
determining, by a processing device, that the detected motion of the building is greater than a threshold; and
controlling access to at least one deck of the elevator system based on determining that the detected motion of the building is greater than the threshold such that the at least one deck still is enabled to traverse a hoist-way of the elevator system.

2. The method of claim 1 , wherein controlling access to the at least one deck comprises prohibiting access to the at least one deck.

3. The method of claim 1 , wherein controlling access to the at least one deck comprises limiting the capacity of the deck to a value that is less than a nominal rating for the at least one deck.

4. The method of claim 3 , wherein the capacity limit is enforced by an attendant or other personnel.

5. The method of claim 3 , wherein the capacity limit is enforced by an overload alarm.

6. The method of claim 1 , wherein controlling access to the at least one deck comprises limiting the at least one deck in terms of stops at particular landings.

7. The method of claim 1 , wherein controlling access to the at least one deck comprises prohibiting the at least one deck from stopping at a particular location within the hoist-way.

8. An apparatus comprising:
at least one processor; and
memory having instructions stored thereon that, when executed by the at least one processor, cause the apparatus to:
determine that a detected motion of a building housing a multi-deck elevator system is greater than a threshold, and
control access to at least one deck of the elevator system based on determining that the detected motion of the building is greater than the threshold such that the at least one deck still is enabled to traverse a hoist-way of the elevator system.

9. The apparatus of claim 8 , wherein the instructions, when executed by the at least one processor, cause the apparatus to:
prohibit passenger access and freight access to the at least one deck based on determining that the detected motion of the building is greater than the threshold.

10. The apparatus of claim 8 , wherein the instructions, when executed by the at least one processor, cause the apparatus to:
limit the capacity of the deck to a value that is less than a nominal rating for the at least one deck based on determining that the detected motion of the building is greater than the threshold.

11. The apparatus of claim 8 , wherein the instructions, when executed by the at least one processor, cause the apparatus to:
limit the at least one deck in terms of stops at particular landings based on determining that the detected motion of the building is greater than the threshold.

12. The apparatus of claim 8 , wherein the instructions, when executed by the at least one processor, cause the apparatus to:
prohibit the at least one deck from stopping at a particular location within the hoist-way based on determining that the detected motion of the building is greater than the threshold.

13. A multi-deck elevator system comprising:
a controller comprising a processor configured to minimize rope sway by:
receiving data indicative of a motion of a building housing the elevator system,
determining that the detected motion of the building is greater than a threshold, and
controlling access to at least one deck of the elevator system based on determining that the detected motion of the building is greater than the threshold such that the at least one deck still is enabled to traverse a hoist-way of the elevator system.

14. The elevator system of claim 13 , wherein the controller is configured to:
prohibit passenger access and freight access to the at least one deck based on determining that the detected motion of the building is greater than the threshold.

15. The elevator system of claim 13 , wherein the controller is configured to:
limit the capacity of the deck to a value that is less than a nominal rating for the at least one deck based on determining that the detected motion of the building is greater than the threshold.

16. The elevator system of claim 13 , further comprising:
a detection device configured to transmit the data to the controller.

17. The elevator system of claim 13 , wherein the detection devices comprises at least one of a pendulum switch, an anemometer, and an accelerometer.

Assignees

• Otis Elevator Co

Inventors

• Roberts Randall Keith
• Copeland George Scott

Classifications

• B66B1/24

  Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration · CPC title

• B66B9/00

  Kinds or types of lifts in, or associated with, buildings or other structures (characterised by control systems B66B1/00; apparatus for raising or lowering persons on stages of theatres A63J5/12) · CPC title

• B66B2201/306

  Multi-deck elevator cars · CPC title

• B66B5/0031

  for safety reasons · CPC title

• B66B5/022 Primary

  where the abnormal operating condition is caused by a natural event, e.g. earthquake · CPC title