公开(公告)号：US20210024330A1

公开(公告)日：2021-01-28

申请号：US16936992

申请日：2020-07-23

Applicant: Otis Elevator Company

Inventor： Herbert Horbrugger ,  Ruediger Loeb

IPC: B66B13/14 ,  B66B3/00

Abstract: An elevator door drive comprising: an elevator door motor; and an elevator door controller comprising at least one button; wherein the elevator door controller is arranged to generate a Pulse Width Modulation (PWM) drive signal for driving the elevator door motor; wherein the elevator door controller is arranged to provide an acoustic frequency PWM signal to the elevator door motor responsive to a press of the at least one button. When the elevator door motor is provided with a PWM signal in the acoustic range, the current passing through the motor windings generates forces that result from that current and the magnetic fields in the motor. These forces excite vibrations in the motor components that generate audible noise (which may be referred to as audible magnetic noise or electromagnetic acoustic noise).

公开(公告)号：US20190352135A1

公开(公告)日：2019-11-21

申请号：US16415704

申请日：2019-05-17

Applicant: Otis Elevator Company

Inventor： Peter Herkel ,  Ruediger Loeb

IPC: B66B13/14 ,  B66B9/00 ,  B66B13/06

Abstract: An elevator system (2) comprises at least one elevator car (6) moving within a hoistway (4); at least one door (10, 11) providing access to the elevator car (6); at least one passenger sensor (21) configured for detecting passengers (30) in the vicinity of the at least one door (10, 11); and a door control device (22) configured for controlling the at least one door (10, 11). The door control device (22) comprises a memory (24) in which at least one predefined movement profile is stored; a modificator (28) configured for modifying the at least one predefined movement profile when the at least one passenger sensor (21) detects a passenger (30) in the vicinity of the at least one door (10, 11); and a door controller (26) configured for controlling the movement of the at least one door (10, 11) based on the at least one movement profile.

公开(公告)号：US20180079620A1

公开(公告)日：2018-03-22

申请号：US15558943

申请日：2015-03-18

Applicant: Otis Elevator Company

Inventor： Helmut Lothar Schroeder-Brumloop ,  Ruediger Loeb

IPC: B66B5/00 ,  B66B5/02 ,  B66B13/14 ,  B66B1/28 ,  G01D5/36

CPC classification number: B66B5/0031 ,  B66B1/28 ,  B66B5/0087 ,  B66B5/02 ,  B66B13/143 ,  B66B13/146 ,  G01D5/36

Abstract: A system for controlling an elevator comprises a car door operation control system (10) for controlling movement of at least one car door (12), the car door operating control system (10) including an incremental encoder configured to provide a signal indicative of a travel distance of the car door (12) to the car door operating control system (10), and an elevator car control system (50) configured to obtain a primary Car Door Closed Signal from a car door safety switch of an elevator safety control system, said elevator car control system (50) configured to obtain a secondary Car Door Closed Signal (DFCM) independent of the primary Car Door Closed Signal based on the travel distance signal provided by the car door operation control system (10).