Patents by Inventor Longhai XU

Longhai XU 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).

  • Method and system for detecting and identifying vibration on basis of optical fiber signal feature to determine time-space
    Patent number: 11892345
    Abstract: A method for detecting and specifying a vibration on the basis of a feature of a fiber-optic signal to determine a time and a spatial location of the present invention includes: Step 1 of acquiring a feature-expanded function vector and C-number of vibration categories by expanding a feature of initial data of a vibration signal from a distributed fiber-optic sensor; Step 2 of calculating a dimensionality reduction matrix based on the feature-expanded function vector; Step 3 of acquiring a dimensionality-reduced feature function by operating the dimensionality reduction matrix to the initial data and the feature-expanded function vector; Step 4 of acquiring a primary classification result of the vibration signal by performing a classification with reference to primary classification parameter acquired from a parameter database; and Step 5 of acquiring and outputting a secondary classification result of the vibration signal by performing removal of a wrong detection result and correction of a wrong classificat
    Type: Grant
    Filed: December 25, 2019
    Date of Patent: February 6, 2024
    Assignee: NEUBREX CO., LTD.
    Inventors: Feng Xie, Hongliang Cong, Guidong Li, Xiaohui Hu, Longhai Xu
  • METHOD AND SYSTEM FOR DETECTING AND IDENTIFYING VIBRATION ON BASIS OF OPTICAL FIBER SIGNAL FEATURE TO DETERMINE TIME-SPACE
    Publication number: 20210396573
    Abstract: A method for detecting and specifying a vibration on the basis of a feature of a fiber-optic signal to determine a time and a spatial location of the present invention includes: Step 1 of acquiring a feature-expanded function vector and C-number of vibration categories by expanding a feature of initial data of a vibration signal from a distributed fiber-optic sensor; Step 2 of calculating a dimensionality reduction matrix based on the feature-expanded function vector; Step 3 of acquiring a dimensionality-reduced feature function by operating the dimensionality reduction matrix to the initial data and the feature-expanded function vector; Step 4 of acquiring a primary classification result of the vibration signal by performing a classification with reference to primary classification parameter acquired from a parameter database; and Step 5 of acquiring and outputting a secondary classification result of the vibration signal by performing removal of a wrong detection result and correction of a wrong classificat
    Type: Application
    Filed: December 25, 2019
    Publication date: December 23, 2021
    Inventors: Feng XIE, Hongliang CONG, Guidong LI, Xiaohui HU, Longhai XU