Patent ID: 11945687
Assignee: KONE CORPORATION
Field: Handling (Mechanical engineering)
Classification: CPC B  G | IPC B

Claim 7:
8. A method for observing a misoperation of elevator, the method comprising:
obtaining and storing data representing movement of an elevator car during a predetermined time interval, the data representing the movement of the elevator car being at least one of the following origin and destination floor pairs, travel times between the origin floor and the destination floor, and standing times at the origin floor;
generating at least one statistical parameter from the received data;
comparing the at least one generated statistical parameter to at least one previously stored statistical parameter of a corresponding time interval, the corresponding time interval being a same time interval as the predetermined time interval at least one comparison period before the predetermined time interval; and
generating a signal indicating a misoperation in response to a detection that the at least one generated statistical parameter deviates from the corresponding previously stored statistical parameter over a predetermined limit.