Patents by Inventor Wenfa Yan

Wenfa Yan 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).

  • Slope detection apparatus and method based on distributed optical fiber sensing
    Patent number: 12644761
    Abstract: This application discloses a slope detection apparatus and method based on distributed optical fiber sensing. The apparatus includes: optical fiber measuring units arranged inside a slope and configured to measure acceleration time sequences of a plurality of state parameters of the slope; a demodulator, where the demodulator is connected to the optical fiber measuring units and configured to receive the acceleration time sequences of the slope; and a terminal device, where the terminal device is connected to the demodulator and configured to perform multi-domain coupling analysis on the acceleration time sequences so as to generate a feature cloud map of the slope, perform sub-item detection on slope stability state based on the feature cloud map and preset multi-domain feature parameter indexes so as to obtain a sub-item detection result of the state of the slope.
    Type: Grant
    Filed: February 3, 2023
    Date of Patent: June 2, 2026
    Assignee: Tsinghua University
    Inventors: Danqing Song, Xiaoli Liu, Wenfa Yan, Guanfu Chen, Yufang Zhang, Jian Li
  • SLOPE DETECTION APPARATUS AND METHOD BASED ON DISTRIBUTED OPTICAL FIBER SENSING
    Publication number: 20240011825
    Abstract: This application discloses a slope detection apparatus and method based on distributed optical fiber sensing. The apparatus includes: optical fiber measuring units arranged inside a slope and configured to measure acceleration time sequences of a plurality of state parameters of the slope; a demodulator, where the demodulator is connected to the optical fiber measuring units and configured to receive the acceleration time sequences of the slope; and a terminal device, where the terminal device is connected to the demodulator and configured to perform multi-domain coupling analysis on the acceleration time sequences so as to generate a feature cloud map of the slope, perform sub-item detection on slope stability state based on the feature cloud map and preset multi-domain feature parameter indexes so as to obtain a sub-item detection result of the state of the slope.
    Type: Application
    Filed: February 3, 2023
    Publication date: January 11, 2024
    Inventors: Danqing Song, Xiaoli Liu, Wenfa Yan, Guanfu Chen, Yufang Zhang, Jian Li