Variable thresholds for an elevator system

Patent metadata

Field	Value
Publication number	US-11518650-B2
Application number	US-201816009292-A
Country	US
Kind code	B2
Filing date	Jun 15, 2018
Priority date	Jun 15, 2018
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A method for monitoring thresholds for performance attributes in an elevator system is provided. Aspects includes collecting, by a sensor affixed to an elevator car, sensor data associated with the elevator system wherein the sensor data comprises one or more performance attribute values for a set of performance attributes of the elevator system. Obtaining a threshold profile associated with the elevator system, wherein the threshold profile comprises thresholds for each performance attribute in the set of performance attributes of the elevator system. Comparing the one or more performance attribute values to corresponding thresholds for the set of performance attributes and transmitting an alert for any of the one or more performance attribute values exceeding the corresponding thresholds for the set of performance attributes.

First claim

What is claimed is:

1. A method for monitoring thresholds for performance attributes in an elevator system, the method comprising:
collecting, by a sensor affixed to an elevator car, sensor data associated with the elevator system wherein the sensor data comprises one or more performance attribute values for a set of performance attributes of the elevator system;
obtaining a threshold profile associated with the elevator system, wherein the threshold profile comprises thresholds for each performance attribute in the set of performance attributes of the elevator system;
comparing the one or more performance attribute values to corresponding thresholds for the set of performance attributes; and
transmitting an alert for any of the one or more performance attribute values exceeding the corresponding thresholds for the set of performance attributes;
storing, in a memory, the sensor data;
periodically, analyzing the stored sensor data to update the threshold profile.

2. The method of claim 1 , wherein the thresholds for each performance attribute varies based on a floor location of the elevator system.

3. The method of claim 1 , wherein the thresholds comprise a range of values for each of the set of performance attributes of the elevator car.

4. The method of claim 1 , wherein the thresholds comprise a single value for each of the set of performance attributes of the elevator car.

5. The method of claim 1 , wherein the alert includes any of the one or more performance attribute values exceeding the corresponding thresholds for the set of performance attributes and the corresponding thresholds.

6. The method of claim 4 , wherein the alert is transmitted to an elevator maintenance system.

7. The method of claim 1 further comprising causing an action for the elevator car to occur based at least in part on any of the one or more performance attribute values exceeding the corresponding thresholds for the set of performance attributes.

8. The method of claim 1 , wherein the action comprises altering an operation of the elevator car.

9. The method of claim 1 , wherein at least one of the set of performance attributes includes travel time for an elevator car in the elevator system.

10. The method of claim 1 , wherein at least on one of the set of performance attributes includes elevator system door vibration; and further comprising:
collecting, by the sensor, vibration values associated with an elevator car in the elevator system;
comparing the vibration values to a threshold from the threshold profile; and
adjusting an opening speed for an elevator system door based at least in part on the vibration values exceeding the threshold.

11. A method for monitoring thresholds for performance attributes in an elevator system, the method comprising:
collecting, by a sensor affixed to an elevator car, sensor data associated with the elevator system wherein the sensor data comprises one or more performance attribute values for a set of performance attributes of the elevator system;
obtaining a threshold profile associated with the elevator system, wherein the threshold profile comprises thresholds for each performance attribute in the set of performance attributes of the elevator system;
comparing the one or more performance attribute values to corresponding thresholds for the set of performance attributes;
transmitting an alert for any of the one or more performance attribute values exceeding the corresponding thresholds for the set of performance attributes;
wherein the thresholds for each performance attribute varies based on a floor location of the elevator system;
storing, in a memory, the sensor data;
periodically, analyzing the stored sensor data to update the threshold profile
wherein analyzing the stored sensor data to update the threshold profile comprises:
applying a learning algorithm to the stored sensor data to extract updated thresholds for each of the set of performance attributes; and
storing the updated thresholds in the threshold profile.

12. An elevator system comprising:
an elevator car;
a sensor affixed to the elevator car, wherein the sensor is operated by a controller; and
wherein the controller is configured to:
collect, by the sensor, sensor data associated with the elevator system, wherein the sensor data comprises one or more performance attribute values for a set of performance attributes of the elevator system;
obtain a threshold profile associated with the elevator system, wherein the threshold profile comprises thresholds for each performance attribute in the set of performance attributes of the elevator system;
compare the one or more performance attribute values to corresponding thresholds for the set of performance attributes;
transmit an alert for any of the one or more performance attribute values exceeding the corresponding thresholds for the set of performance attributes;
store, in a memory, the sensor data;
periodically, analyze the stored sensor data to update the threshold profile.

13. The elevator system of claim 12 , wherein the thresholds for each performance attribute varies based on a floor location of the elevator system.

14. The elevator system of claim 13 , wherein the thresholds comprise a range of values for each of the set of performance attributes of the elevator car.

15. The elevator system of claim 12 , wherein the thresholds comprise a single value for each of the set of performance attributes of the elevator car.

16. The elevator system of claim 12 , wherein the alert includes any of the one or more performance attribute values exceeding the corresponding thresholds for the set of performance attributes and the corresponding thresholds.

17. An elevator system comprising:
an elevator car;
a sensor affixed to the elevator car, wherein the sensor is operated by a controller; and
wherein the controller is configured to:
collect, by the sensor, sensor data associated with the elevator system, wherein the sensor data comprises one or more performance attribute values for a set of performance attributes of the elevator system;
obtain a threshold profile associated with the elevator system, wherein the threshold profile comprises thresholds for each performance attribute in the set of performance attributes of the elevator system;
compare the one or more performance attribute values to corresponding thresholds for the set of performance attributes;
transmit an alert for any of the one or more performance attribute values exceeding the corresponding thresholds for the set of performance attributes;

wherein the thresholds for each performance attribute varies based on a floor location of the elevator system;
wherein the controller is further configured to:
store, in a memory, the sensor data; and
periodically, analyze the stored sensor data to update the threshold profile;
wherein analyzing the stored sensor data to update the threshold profile comprises:
applying a learning algorithm to the stored sensor data to extract updated thresholds for each of the set of performance attributes; and
storing the updated thresholds in the threshold profile.

18. The elevator system of claim 17 , wherein the alert is transmitted to an elevator maintenance system.

Assignees

• Otis Elevator Co

Inventors

• Witczak Tadeusz Pawel
• Bogli Craig Drew
• Nanjappan Ezhil
• Pahlke Derk Oscar

Classifications

• B66B5/0018

  Devices monitoring the operating condition of the elevator system · CPC title

• B66B5/0031

  for safety reasons · CPC title

• B66B13/143

  electrical · 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

• B66B5/02

  responsive to abnormal operating conditions · CPC title