公开(公告)号：US20240010468A1

公开(公告)日：2024-01-11

申请号：US18070861

申请日：2022-11-29

Applicant: Otis Elevator Company

Inventor： Xinwei Gong ,  Lifei Cheng ,  Kaisheng Xu ,  Zhaoxia Hu

IPC: B66B25/00 ,  B66B21/02

CPC classification number: B66B25/00 ,  B66B21/02

Abstract: A heating control apparatus and method for an escalator system or automatic walkway system, an escalator system and automatic walkway system including the heating control apparatus, and a computer-readable storage medium on which a computer program for implementing the method is stored. A heating control apparatus for an escalator system or automatic walkway system includes: memory; a processor coupled with the memory; and a computer program stored on the memory and running on the processor, the running of the computer program causes: A. obtaining ambient status and device status of the escalator system or automatic walkway system, the ambient status includes ambient temperature and ambient humidity; and B. generating a control command regarding a heater of the escalator system or automatic walkway system based on the ambient status and the device status.

公开(公告)号：US20230318502A1

公开(公告)日：2023-10-05

申请号：US17988456

申请日：2022-11-16

Applicant: Otis Elevator Company

Inventor： Lifei Cheng ,  Zhaoxia Hu ,  Xinwei Gong ,  Wentong Liu

IPC: H02P23/08 ,  B66B25/00 ,  H02P25/18

CPC classification number: H02P23/08 ,  B66B25/00 ,  H02P25/184 ,  H02P2207/01

Abstract: A device and method for determining operating modes of an AC asynchronous three-phase motor in an escalator system and computer-readable storage medium on which a computer program for implementing the method is stored. The operating modes include a first operating mode and a second operating mode, the AC asynchronous three-phase motor adopts a triangular wiring mode and a star wiring mode in the first operating mode and the second operating mode, respectively, the device includes: a memory; a processor coupled with the memory; and a computer program stored on the memory and running on the processor, the running of the computer program causes: A. obtaining a slip rate of the AC asynchronous three-phase motor; and B. determining whether the AC asynchronous three-phase motor needs to be switched between the first operating mode and the second operating mode based on the slip rate.

公开(公告)号：US20190263634A1

公开(公告)日：2019-08-29

申请号：US16283238

申请日：2019-02-22

Applicant: Otis Elevator Company

Inventor： Lifei Cheng ,  Zhaoxia Hu

IPC: B66B27/00 ,  G01P3/02

Abstract: A speed monitoring device and a passenger conveying device. The speed monitoring device includes a transmission rotor disposed on a shaft side surface of a shaft of which the speed is to be measured and rotating with rotation of the shaft of which the speed is to be measured; an encoder having an input shaft, the input shaft of the encoder being connected to the transmission rotor and rotating with rotation of the transmission rotor; and a mounting bracket for securing the transmission rotor and the encoder to a position where they are to be mounted.