Patents by Inventor Keyu LI

Keyu LI 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).

  • Patent number: 11780709
    Abstract: The present invention relates to a method and a system of commissioning elevator, and an elevator system. The method includes obtaining at least one operation data of at least one elevator door, comparing the operation data with corresponding criterion operation data, and determining whether a deviation between the operation data and the criterion operation data exceeds a pre-set range, and if so, triggering a control over at least one control end relevant to the operation of the elevator door to make a deviation between the operation data re-obtained and the criterion operation data fall within the pre-set range. The invention will increase the efficiency in elevator commissioning and remove the adverse effects on elevator operation caused by factors such as “Stack Effect”, and thereby ensure good working condition and high security of elevators.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: October 10, 2023
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Changle Li, Buyun Jing, Haitao Zhou, Yun Li, Keyu Li, Xing Cai, Daniel A. Mosher
  • Publication number: 20230064418
    Abstract: A refrigeration system configured for controlling operation of a compressor is disclosed. The refrigeration system comprises an electronic expansion device operatively coupled with the compressor. The refrigeration system comprises a controller operatively coupled with the electronic expansion device. The controller is configured to control the electronic expansion valve based on a superheat setpoint range. The controller is further configured to adjust the superheat setpoint range in response to an operating point of the compressor being within a threshold distance from a boundary of an operational envelope for the compressor.
    Type: Application
    Filed: July 18, 2022
    Publication date: March 2, 2023
    Inventors: Matthew Clark, Larry D. Burns, Jun Pyo Lee, Keyu Li, Runfu Shi
  • Patent number: 11143423
    Abstract: A method of conditioning an environment includes generating, by a group feedback analysis system, a first comfort limit based on a first plurality of data points corresponding to user feedback of a group of users in an environment conditioned by an environmental conditioning system, and each associated with temperature and humidity environmental criterions. The method further includes generating a second comfort limit based on a second plurality of data points corresponding to user feedback of the group of users, and associated with the temperature and humidity environmental criterions. The method identifies a constrained comfort zone defined by the first comfort limit, the second comfort limit, predefined lower and upper bounds for the temperature environmental criterion, and predefined lower and upper bounds for the humidity environmental criterion. The environmental system is controlled to maintain the temperature and humidity environmental criterions within the constrained comfort zone.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: October 12, 2021
    Assignee: CARRIER CORPORATION
    Inventors: Keyu Li, Jinlei Ding, Hayden M. Reeve, Danqing Sha
  • Patent number: 11113516
    Abstract: The present invention provides a human flow estimation system and a human flow estimation method. The human flow estimation system comprises: a sensor network comprising a plurality of sensors for collecting data and respectively arranged in each to-be-estimated region and between the to-be-estimated regions; a model building module configured to build a horizontal human flow model and a vertical human flow model based on the plurality of sensors arranged in each to-be-estimated region and/or arranged between the to-be-estimated regions; and a human flow estimation module configured to estimate human flow data based on the horizontal human flow model and the vertical human flow model. The human flow estimation system and the human flow estimation method according to the present invention can realize high-precision estimation of human flow data in a three-dimensional space.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: September 7, 2021
    Assignee: CARRIER CORPORATION
    Inventors: Hui Fang, Zhen Jia, Keyu Li, Zhengang Zhu, Xiangbao Li, Mei Chen
  • Publication number: 20200088427
    Abstract: A method of conditioning an environment includes generating, by a group feedback analysis system, a first comfort limit based on a first plurality of data points corresponding to user feedback of a group of users in an environment conditioned by an environmental conditioning system, and each associated with temperature and humidity environmental criterions. The method further includes generating a second comfort limit based on a second plurality of data points corresponding to user feedback of the group of users, and associated with the temperature and humidity environmental criterions. The method identifies a constrained comfort zone defined by the first comfort limit, the second comfort limit, predefined lower and upper bounds for the temperature environmental criterion, and predefined lower and upper bounds for the humidity environmental criterion. The environmental system is controlled to maintain the temperature and humidity environmental criterions within the constrained comfort zone.
    Type: Application
    Filed: December 1, 2017
    Publication date: March 19, 2020
    Inventors: Keyu Li, Jinlei Ding, Hayden M. Reeve, Danqing Sha
  • Publication number: 20200074164
    Abstract: The present invention provides a human flow estimation system and a human flow estimation method. The human flow estimation system comprises: a sensor network comprising a plurality of sensors for collecting data and respectively arranged in each to-be-estimated region and between the to-be-estimated regions; a model building module configured to build a horizontal human flow model and a vertical human flow model based on the plurality of sensors arranged in each to-be-estimated region and/or arranged between the to-be-estimated regions; and a human flow estimation module configured to estimate human flow data based on the horizontal human flow model and the vertical human flow model. The human flow estimation system and the human flow estimation method according to the present invention can realize high-precision estimation of human flow data in a three-dimensional space.
    Type: Application
    Filed: February 26, 2018
    Publication date: March 5, 2020
    Inventors: Hui Fang, Zhen Jia, Keyu Li, Zhengang Zhu, Xiangbao Li, Mei Chen
  • Publication number: 20200048046
    Abstract: The present invention relates to a method and a system of commissioning elevator, and an elevator system. The method includes obtaining at least one operation data of at least one elevator door, comparing the operation data with corresponding criterion operation data, and determining whether a deviation between the operation data and the criterion operation data exceeds a pre-set range, and if so, triggering a control over at least one control end relevant to the operation of the elevator door to make a deviation between the operation data re-obtained and the criterion operation data fall within the pre-set range. The invention will increase the efficiency in elevator commissioning and remove the adverse effects on elevator operation caused by factors such as “Stack Effect”, and thereby ensure good working condition and high security of elevators.
    Type: Application
    Filed: August 13, 2019
    Publication date: February 13, 2020
    Inventors: Changle Li, Buyun Jing, Haitao Zhou, Yun Li, Keyu Li, Xing Cai, Daniel A. Mosher
  • Patent number: 10407503
    Abstract: Human antibody fragments against c-Met have been identified through phage display technology. The high affinity and low immunogenicity make them very useful for both in vivo and in vitro applications. These novel human antibodies can greatly help the study of drug resistance in EGFR targeted therapies, and improve the diagnosis and treatment of cancer patients.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: September 10, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Anna M. Wu, Keyu Li
  • Publication number: 20150299326
    Abstract: Human antibody fragments against c-Met have been identified through phage display technology. The high affinity and low immunogenicity make them very useful for both in vivo and in vitro applications. These novel human antibodies can greatly help the study of drug resistance in EGFR targeted therapies, and improve the diagnosis and treatment of cancer patients.
    Type: Application
    Filed: December 2, 2013
    Publication date: October 22, 2015
    Inventors: Anna M. WU, Keyu LI