Patents by Inventor Lifei Cheng

Lifei Cheng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240010468
    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.
    Type: Application
    Filed: November 29, 2022
    Publication date: January 11, 2024
    Inventors: Xinwei Gong, Lifei Cheng, Kaisheng Xu, Zhaoxia Hu
  • Publication number: 20230318502
    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.
    Type: Application
    Filed: November 16, 2022
    Publication date: October 5, 2023
    Inventors: Lifei Cheng, Zhaoxia Hu, Xinwei Gong, Wentong Liu
  • Patent number: 11764716
    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.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: September 19, 2023
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Lifei Cheng, Zhaoxia Hu, Xinwei Gong, Wentong Liu
  • Publication number: 20230094547
    Abstract: The present application relates to a control system and a method for controlling a passenger conveying apparatus, and a computer-readable storage medium for implementing the method. A control apparatus for a passenger conveying apparatus according to an aspect of the present application comprises: a processor; a memory coupled with the processor; a communication module coupled with the processor; and a computer program stored on the memory and running on the processor, the running of the computer program causes: in response to an internal control command of the control apparatus or an external control command outside the control apparatus, determining whether there is a passenger boarding signal in the passenger conveying apparatus within a specified time interval, wherein the internal control command and the external control command comprise commands for starting or stopping the passenger conveying apparatus; and manipulating the passenger conveying apparatus based on the determining.
    Type: Application
    Filed: September 15, 2022
    Publication date: March 30, 2023
    Inventors: Lifei Cheng, Zhaoxia Hu, Xinwei Gong
  • Patent number: 11078050
    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.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: August 3, 2021
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Lifei Cheng, Zhaoxia Hu
  • Patent number: 10865074
    Abstract: An automatic handrail tensioning system and a method for adjusting the tension degree of a handrail, and belongs to the technical field of escalators. The automatic handrail tensioning system of the present invention comprises: a sensor for detecting information that can reflect a tension degree of the handrail; a controller for determining the tension degree information of the handrail according to the information detected by the sensor, and generating a corresponding control instruction for adjusting the tension degree of the handrail based on the tension degree information; and an actuator for driving a tensioning device to adjust the tension degree of the handrail based on the control instruction.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: December 15, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: QingXi Cai, JianGuo Li, Xin Wei, Jie Hu, LiFei Cheng, ZuAn Tang, Jun Ma
  • Publication number: 20200087116
    Abstract: An automatic handrail tensioning system and a method for adjusting the tension degree of a handrail, and belongs to the technical field of escalators. The automatic handrail tensioning system of the present invention comprises: a sensor for detecting information that can reflect a tension degree of the handrail; a controller for determining the tension degree information of the handrail according to the information detected by the sensor, and generating a corresponding control instruction for adjusting the tension degree of the handrail based on the tension degree information; and an actuator for driving a tensioning device to adjust the tension degree of the handrail based on the control instruction.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 19, 2020
    Inventors: QingXi Cai, JianGuo Li, Xin Wei, Jie Hu, LiFei Cheng, ZuAn Tang, Jun Ma
  • Publication number: 20190263634
    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.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Inventors: Lifei Cheng, Zhaoxia Hu