Patents by Inventor Zijun Han

Zijun Han 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: 20240171939
    Abstract: A method and system of resilient UWB target localization for a vehicle are provided. The system comprises a UWB tag arranged to be mobile and trackable by way of a sensor signal and at least three UWB anchors. Each anchor is in communication with the tag. The system further comprises a gateway in communication with the anchors. The gateway comprises an ECU arranged to receive sensor signals from UWB anchors. The ECU comprises a preprocessing module, a clustering module, and a Bayesian module. The preprocessing module is arranged to align sensor signals at an aligned timestamp to define aligned data. The clustering module is arranged to cluster points of intersections, defining a sensed location for each cluster. The Bayesian module is arranged to determine a real-time location of the tag based on a Bayesian probability function to match the sensed location with a predicted location of the tag.
    Type: Application
    Filed: October 26, 2022
    Publication date: May 23, 2024
    Inventors: Jinzhu Chen, Zijun Han, Aaron Adler, John Sergakis, Fan Bai
  • Publication number: 20240172164
    Abstract: Systems and methods for diagnosing sensor performance of a UWB sensor localization are provided. The system comprises a UWB tag, at least four UWB anchors, and a gateway. The gateway comprises an ECU arranged to receive sensor signals from the UWB anchors. The ECU comprises a preprocessing module arranged to align the sensor signals defining aligned data and is arranged to determine intersections of the aligned data defining points of intersections. The system further comprises a clustering module arranged to cluster the points of intersections defining at least one cluster of points of the UWB anchors to calculate a clustering quality and a clustering variance of each of the at least one cluster. The ECU is arranged to find a clustering contribution of each anchor defining a first contribution low of one of the anchors and is arranged to determine an erratic anchor based the first contribution low.
    Type: Application
    Filed: October 26, 2022
    Publication date: May 23, 2024
    Inventors: Jinzhu Chen, Zijun Han, Fan Bai, Aaron Adler, John Sergakis
  • Publication number: 20240151805
    Abstract: Systems and methods of diagnosing sensor performance of an ultra wide band (UWB) sensor localization for a vehicle are provided. The method comprises receiving sensor signals from at least four UWB anchors and a UWB tag for a time period. The sensor signals represent anchor coordinates and real-time distances between the tag and each anchor. The method comprises aligning the sensor signals to define aligned data. The method comprises calculating a predicted location of the UWB tag based on the aligned data and a least square of error to define a first constructed matrix and a second constructed matrix. The method comprises determining a local error of each of the at least four UWB anchors based on the least square of error and comparing each local error with an error threshold to define a first threshold high. The method comprises determining an erratic anchor based on the first threshold high.
    Type: Application
    Filed: October 26, 2022
    Publication date: May 9, 2024
    Inventors: Jinzhu Chen, Zijun Han, Fan Bai, Aaron Adler, John Sergakis
  • Patent number: 10826629
    Abstract: Embodiment of the present disclosure discloses a method and an apparatus for generating human pose images based on Wi-Fi signals. The method for generating human pose images based on Wi-Fi signals comprises: receiving Wi-Fi signals through one or more antennas; obtaining channel state information from the Wi-Fi signals; extracting channel state information components related to human pose changes from the channel state information; constructing a mapping model between the Wi-Fi signals and the human poses to map the channel state information components related to the human pose changes to a human pose image sequence.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: November 3, 2020
    Assignee: Beijing University of Posts and Telecommunications
    Inventors: Zhaoming Lu, Lingchao Guo, Xiangming Wen, Shuang Zhou, Zijun Han, Xinbin Shen, Zhihong He