ELEVATOR SAFETY SYSTEM

• US 20190330015A1
• Filed: 04/30/2018
• Published: 10/31/2019
• Est. Priority Date: 04/30/2018
• Status: Abandoned Application

• Current Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Original Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Inventors: Wos, Lindsay, Faruki, Tarique
• Application Number:
  US15/966,323
• Publication Number:
  US 20190330015A1
• Time in Patent Office: Days
• CPC Class Codes: B66B 1/28 electrical detecting excessive speed B66B5/04 ; control of electrical motor H02P
• CPC Class Codes: B66B 1/3407 Setting or modification of parameters of the control system
• CPC Class Codes: B66B 1/3461 between the elevator control system and remote or mobile stations
• CPC Class Codes: B66B 2201/00 Aspects of control systems of elevators
• CPC Class Codes: B66B 5/0006 Monitoring devices or performance analysers B66B5/02 takes precedence
• CPC Class Codes: B66B 5/0056 by preventing crushing
• CPC Class Codes: B66B 9/00 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

Abstract

According to an aspect, a technique for operating an elevator safety system using pressure-sensitive detection includes detecting a presence in a safety zone of a first elevator of the elevator system, and activating a safety mode of the first elevator based at least in part on the determination. The technique also includes operating the first elevator in the safety mode, and transmitting data of the first elevator to a server.

Claims

1. A method of operating an elevator safety system using pressure-sensitive detection, comprising:

detecting a presence in a safety zone of a first elevator of the elevator system;

activating a safety mode of the first elevator based at least in part on the detection; and

operating the first elevator in the safety mode.

2. The method of claim 1, further comprising transmitting data associated with the first elevator to a server.

3. The method of claim 1, wherein the safety zone is located in at least one of on top of the first elevator and a pit of the first elevator.

4. The method of claim 3, wherein the safety mode includes reducing a speed of the first elevator based at least in part on the detection.

5. The method of claim 3, wherein the safety mode includes inhibiting the first elevator from traveling on one or more floors based at least in part on the detection.

6. The method of claim 1, further comprising responsive to the detection, stopping the operation of the first elevator.

7. The method of claim 1, further comprising responsive to the detection, operating the first elevator at normal speed when traveling outside of the safety zone and at a reduced speed upon entering the safety zone.

8. The method of claim 3, further comprising operating the first elevator independently of operating a second elevator in the safety mode.

9. The method of claim 1, further comprising detecting a presence on a pressure-sensitive mat of the first elevator and operating a second elevator in the safety mode, wherein the safety mode performs at least one of reducing the speed of the second elevator, stopping the second elevator and operating the second elevator at normal speed outside of the safety zone.

10. The method of claim 1, wherein a second elevator is operated at a reduced speed based at least in part on a safety zone of the first elevator.

11. The method of claim 10, wherein the first elevator remains operational when in the safety mode.

12. An elevator safety system comprising:

one or more elevator cars;

one or more pressure-sensitive mats operable to detect a presence in a safety zone of the one or more elevator cars; and

an elevator controller configured to receive a signal from the one or more pressure-sensitive mats, and activate a safety mode based on the detection.

13. The elevator system of claim 12, further comprising transmitting data associated with the one or more elevator cars to a server.

14. The elevator system of claim 12, wherein the one or more pressure-sensitive mats are located in at least one of on top of the one or more elevator cars or a pit of the one or more elevators cars.

15. The elevator system of claim 14, wherein the elevator controller is configured to control the one or more elevators cars by at least one of stopping the operation of the one or more elevators and maintaining the operability of the one or more elevator cars when in the safety mode.

16. The elevator system of claim 14, wherein the elevator controller is configured to operate the one or more elevator cars at normal speed when traveling outside of the safety zone, and operate at a reduced speed upon entering the safety zone responsive to the detection.

17. The elevator system of claim 15, wherein the elevator controller is configured to operate a first elevator car of the one or more elevator cars independently of operating a second elevator car of the one or more elevator cars when in the safety mode.

18. The elevator system of claim 12, further comprising detecting a presence on one or more pressure-sensitive mats of a first elevator car of the one or more elevator cars and operating a second elevator car of the one or more elevator cars in the safety mode, wherein the safety mode performs at least one of reducing a speed of the second elevator car, stopping the second elevator car and operating the second elevator car at a normal speed outside of the safety zone.

19. The elevator system of claim 15, wherein the elevator controller is configured to operate a second elevator car of the one or more elevator cars at a reduced speed based on a safety zone of a first elevator car of the one or more elevator cars.

20. The elevator system of claim 15, wherein the elevator controller is configured to inhibit the one or more elevators cars from traveling on one or more floors based at least in part on the detection.