Patents by Inventor Zefeng Wen

Zefeng Wen 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).

  • Adaptive method of cleaning structural health monitoring data based on local outlier factor
    Patent number: 11809517
    Abstract: An adaptive method of cleaning structural health monitoring (SHM) data based on local outlier factor is provided, including following steps: step 1: dividing SHM data to be analyzed into a series of data segments by using adaptive sliding window (ASW) technology; step 2: extracting time-domain statistical factors and frequency-domain statistical factors of each of the data segments to refine data information, thereby forming objects for study; step 3: calculating an outlier degree of each of the objects by using a weighted multiscale local outlier factor (WMLOF) based on feature factors; and step 4: detecting anomalies in SHM data by comparing a WMLOF value with a threshold value. The adaptive method can improve data quality effectively.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: November 7, 2023
    Assignee: SOUTHWEST JIAOTONG UNIVERSITY
    Inventors: Zefeng Wen, Qinglin Xie, Gongquan Tao
  • RAIL CORRUGATION RECOGNITION METHOD AND APPARATUS BASED ON SUPPORT VECTOR MACHINE, DEVICE, AND MEDIUM
    Publication number: 20230347948
    Abstract: The present disclosure discloses a rail corrugation recognition method and apparatus based on a support vector machine, a device, and a medium.
    Type: Application
    Filed: November 4, 2022
    Publication date: November 2, 2023
    Inventors: Zefeng Wen, Xiaolong Liu, Xinbiao Xiao, Shulin Liang