Patents by Inventor ZhaoXia Hu

ZhaoXia Hu 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: 10479653
    Abstract: A monitoring system includes: an imaging sensor configured to sense a lighting device of the passenger conveyor to acquire image data; and a processing apparatus configured to process the image data, the processing apparatus being configured to include: a background acquisition module configured to acquire a background model based on sensed image data; a foreground detection module configured to compare image data sensed in real time with the background model to obtain a foreground object; and a working condition judgment module configured to perform data processing at least based on the foreground object to judge whether the lighting device is in a normal state. Then, a failure or an abnormal lighting state of the lighting device can be timely diagnosed so that maintenance is performed.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: November 19, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Qiang Li, Jianwei Zhao, ZhaoXia Hu, LongWen Wang, Hui Fang, Zhen Jia, Anna Su
  • 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
  • Patent number: 10364130
    Abstract: The present invention relates to the field of passenger conveyor technologies, and provides a speed detection system of a passenger conveyor and a speed detection method thereof. In the speed detection system and the speed detection method of the present invention, an imaging sensor and/or a depth sensing sensor are/is used to sense at least one part of the passenger conveyor to acquire sequence frames, and the sequence frames are analyzed by a processing apparatus to obtain at least speed information about steps of the passenger conveyor.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: July 30, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Yanying Chen, ZhaoXia Hu, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn
  • Patent number: 10282847
    Abstract: The present invention relates to the field of passenger conveyor technologies, and provides a monitoring system of a passenger conveyor and a monitoring method thereof. In the monitoring system and detection method of the present invention, a monitored object of the passenger conveyor is sensed by using an imaging sensor and/or a depth sensing sensor to acquire a data frame, and the data frame is analyzed by a processing apparatus to monitor whether the monitored object is in a normal state. The monitored object may include a landing plate, a step, a barrier used in a maintenance and repair working condition and/or a step speed, and the like.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: May 7, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: JianGuo Li, ZhaoXia Hu, LongWen Wang, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn, Wei Ge, Wilfrid Fuchs, Arthur Hsu, Yanzhi Chen
  • Patent number: 10221046
    Abstract: A moving handrail monitoring system includes a sensor configured to sense at least part of a moving handrail of the passenger conveying device to acquire a data frame; a processing device configured to analyze and process the data frame to monitor whether a tension degree of the moving handrail is in a normal state, wherein the processing device is configured to include: a target object recognition module configured to recognize, based on a sensed movement and/or position and/or color and/or shape, a moving handrail portion that serves as a target object from the data frame; an object feature extraction module configured to extract a tension degree feature of the moving handrail portion; and a judgment module configured to compare the extracted tension degree feature with a system preset interval, and judge whether a current tension degree of the moving handrail is normal.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: March 5, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: ZhaoXia Hu, Wilfrid Fuchs, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn
  • Patent number: 10214391
    Abstract: The present invention provides a handrail entry monitoring system of a passenger conveyor and a monitoring method thereof, and belongs to the field of passenger conveyor technologies. In the handrail entry monitoring system and the monitoring method of the present invention, at least part of a handrail entry region of the passenger conveyor is sensed by using an imaging sensor and/or a depth sensing sensor, to acquire a data frame, and the data frame is analyzed to monitor whether a handrail entry of the operating passenger conveyor is in a normal state or an abnormal state. The monitoring system of the present invention and the monitoring method thereof can timely and effectively detect a danger that a foreign matter is about to be entrapped into the handrail entry, helping prevent foreign matters from being entrapped into the handrail entry, thereby improving safety of the passenger conveyor.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: February 26, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: LongWen Wang, ZhaoXia Hu, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn, Gero Gschwendtner
  • Patent number: 10183843
    Abstract: The present invention relates to step roller monitoring and maintenance personnel monitoring of a passenger conveyor, and belongs to the field of passenger conveyor technologies. In the monitoring system and monitoring method of the present invention, an imaging sensor and/or a depth sensing sensor is used to sense the step roller/maintenance personnel of the passenger conveyor to acquire data frames, and the data frames are analyzed and processed to monitor whether the movement or position of the step roller/activity or position of the maintenance personnel is in a normal state.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: January 22, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: ZhaoXia Hu, JianGuo Li, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn, Wei Ge, Yanying Chen, LongWen Wang, DuEon Kim
  • Patent number: 10173864
    Abstract: A moving handrail monitoring system includes a sensor configured to sense at least part of a moving handrail of the passenger conveying device to acquire a data frame; a processing device configured to analyze and process the data frame to monitor whether a tension degree of the moving handrail is in a normal state, wherein the processing device is configured to include: a target object recognition module configured to recognize, based on a sensed movement and/or position and/or color and/or shape, a moving handrail portion that serves as a target object from the data frame; an object feature extraction module configured to extract a tension degree feature of the moving handrail portion; and a judgment module configured to compare the extracted tension degree feature with a system preset interval, and judge whether a current tension degree of the moving handrail is normal.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: January 8, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: ZhaoXia Hu, Wilfrid Fuchs, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn
  • Publication number: 20180257912
    Abstract: A moving handrail monitoring system includes a sensor configured to sense at least part of a moving handrail of the passenger conveying device to acquire a data frame; a processing device configured to analyze and process the data frame to monitor whether a tension degree of the moving handrail is in a normal state, wherein the processing device is configured to include: a target object recognition module configured to recognize, based on a sensed movement and/or position and/or color and/or shape, a moving handrail portion that serves as a target object from the data frame; an object feature extraction module configured to extract a tension degree feature of the moving handrail portion; and a judgment module configured to compare the extracted tension degree feature with a system preset interval, and judge whether a current tension degree of the moving handrail is normal.
    Type: Application
    Filed: May 10, 2018
    Publication date: September 13, 2018
    Inventors: ZhaoXia Hu, Wilfrid Fuchs, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn
  • Patent number: 10071884
    Abstract: The present invention relates to the field of passenger conveyor technologies, and provides an engaging state detection system of a passenger conveyor and a detection method thereof. In the engaging state detection system and detection method of the present invention, a depth sensing sensor is used to sense at least an engaging portion between a step and a comb plate of the passenger conveyor to obtain depth maps, and the depth maps are analyzed by a processing apparatus to detect whether an engaging state between the step and the comb plate is a normal state. The detection of the engaging state includes detection on whether comb teeth of the comb plate are broken, whether engaging teeth of the step are broken, and/or whether a foreign matter exists on an engaging line.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: September 11, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: JianGuo Li, Nigel Morris, Alois Senger, Jianwei Zhao, ZhaoXia Hu, Qiang Li, Hui Fang, Zhen Jia, Anna Su, Alan Matthew Finn, LongWen Wang, Qian Li, Gero Gschwendtner
  • Patent number: 10059569
    Abstract: A monitoring system and a monitoring method for a passenger conveying device, and the passenger conveying device. The monitoring system comprises an imaging sensor and/or a depth sensing sensor for sensing a monitoring area of the passenger conveying device to acquire data frames; and a processing device for performing data processing on the data frames to monitor whether the monitoring area is abnormal, and configured to comprise: a background acquisition module for acquiring a background model based on data frames sensed when the monitoring area is in a normal state; a foreground detection module for comparing data frames sensed in real time with the background model to obtain a foreground object; a foreground feature extraction module for extracting a corresponding foreground object markup feature from the foreground object; and a state judgment module for judging whether the foreground object belongs to an abnormal population.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: August 28, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Hui Fang, Zhen Jia, Yanzhi Chen, Alan Matthew Finn, Arthur Hsu, Jianwei Zhao, ZhaoXia Hu, Qiang Li, Anna Su, Longwen Wang, XuLei Guo, Alois Senger
  • Patent number: 10046952
    Abstract: A moving handrail monitoring system includes a sensor configured to sense at least part of a moving handrail of the passenger conveying device to acquire a data frame; a processing device configured to analyze and process the data frame to monitor whether a tension degree of the moving handrail is in a normal state, wherein the processing device is configured to include: a target object recognition module configured to recognize, based on a sensed movement and/or position and/or color and/or shape, a moving handrail portion that serves as a target object from the data frame; an object feature extraction module configured to extract a tension degree feature of the moving handrail portion; and a judgment module configured to compare the extracted tension degree feature with a system preset interval, and judge whether a current tension degree of the moving handrail is normal.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: August 14, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: ZhaoXia Hu, Wilfrid Fuchs, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn
  • Patent number: 9884749
    Abstract: A sensor assembly for a passenger conveying device, a safety system and the passenger conveying device, wherein the sensor assembly comprises an optical fiber disposed along a length of a skirt board of the passenger conveying device; a light source disposed at a first end of the optical fiber, light being incident into the optical fiber; and an optical receiver disposed at the first end of the optical fiber, the optical receiver receiving backwards scattered light from the optical fiber and being capable of sensing a signal indication of the backwards scattered light, wherein the optical fiber is associated with a sensing element such that the sensing element causes deformation of the optical fiber when the sensing element is subjected to pressure, and the optical receiver is capable of sensing a change in the signal indication of the backward scattered light caused by the deformation of the optical fiber.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: February 6, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: LingHao Tian, Qiang Li, XuLei Guo, Jianwei Zhao, ZhaoXia Hu, Alan Matthew Finn
  • Publication number: 20180029837
    Abstract: A sensor assembly for a passenger conveying device, a safety system and the passenger conveying device, wherein the sensor assembly comprises an optical fiber disposed along a length of a skirt board of the passenger conveying device; a light source disposed at a first end of the optical fiber, light being incident into the optical fiber; and an optical receiver disposed at the first end of the optical fiber, the optical receiver receiving backwards scattered light from the optical fiber and being capable of sensing a signal indication of the backwards scattered light, wherein the optical fiber is associated with a sensing element such that the sensing element causes deformation of the optical fiber when the sensing element is subjected to a-pressure, and the optical receiver is capable of sensing a change in the signal indication of the backward scattered light caused by the deformation of the optical fiber.
    Type: Application
    Filed: July 26, 2017
    Publication date: February 1, 2018
    Inventors: LingHao Tian, Qiang Li, XuLei Guo, Jianwei Zhao, ZhaoXia Hu, Alan Matthew Finn
  • Publication number: 20180029836
    Abstract: A temperature monitoring system for a passenger transport apparatus includes a temperature detection apparatus; and a control apparatus. When the temperature of at least one of a plurality of components is lower than a working temperature range, the control apparatus sends out a notification message and/or enables a heating apparatus to heat the component; when the temperature of at least one of the plurality of components reaches an early warning temperature range, the control apparatus sends out a notification message and/or enables a heat dissipation apparatus to dissipate heat for the component; and when the temperature of at least one of the plurality of components continues to rise and exceeds the working temperature range, the control apparatus sends out a notification message and/or enables the passenger transport apparatus to brake. The present invention is able to monitor a component running condition and predict a component service life.
    Type: Application
    Filed: July 28, 2017
    Publication date: February 1, 2018
    Inventors: Yanying Chen, ZhaoXia Hu, Wilfrid Fuchs, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su