Patents by Inventor Fengqin He

Fengqin He 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).

  • Synchronous high-speed photographing method and device for microparticle rotation in liquid cyclone field
    Patent number: 10598585
    Abstract: A method and a device for synchronous high-speed photographing of microparticle rotation in a liquid cyclone field and for determining the rotation velocity of a microparticle in a liquid cyclone field by using a combination of a synchronous high-speed photographing system and a transparent microparticle containing two centrosymmetrically arranged inner cores having the same diameter. The method comprises: using a transparent microparticle comprising two inner cores having the same diameter and arranged centrosymmetrically as a rotation test particle; acquiring synchronously two groups of two dimensional image series of microparticle motion in a liquid cyclone field using two orthogonally arranged high-speed digital cameras; and reconstructing a three dimensional motion trajectory of the microparticle from the two groups of synchronous image series, and determining a rotation velocity of the microparticle in the cyclone field at the same time.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: March 24, 2020
    Assignee: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Hualin Wang, Yuan Huang, Yang Qiu, Pengbo Fu, Yanhong Zhang, Zhishan Bai, Qiang Yang, Fengqin He
  • SYNCHRONOUS HIGH-SPEED PHOTOGRAPHING METHOD AND DEVICE FOR MICROPARTICLE ROTATION IN LIQUID CYCLONE FIELD
    Publication number: 20180356329
    Abstract: A method and a device for synchronous high-speed photographing of microparticle rotation in a liquid cyclone field and for determining the rotation velocity of a microparticle in a liquid cyclone field by using a combination of a synchronous high-speed photographing system and a transparent microparticle containing two centrosymmetrically arranged inner cores having the same diameter. The method comprises: using a transparent microparticle comprising two inner cores having the same diameter and arranged centrosymmetrically as a rotation test particle; acquiring synchronously two groups of two dimensional image series of microparticle motion in a liquid cyclone field using two orthogonally arranged high-speed digital cameras; and reconstructing a three dimensional motion trajectory of the microparticle from the two groups of synchronous image series, and determining a rotation velocity of the microparticle in the cyclone field at the same time.
    Type: Application
    Filed: June 15, 2015
    Publication date: December 13, 2018
    Applicant: East China University of Science and Technology
    Inventors: Hualin Wang, Yuan Huang, Yang Qiu, Pengbo Fu, Yanhong Zhang, Zhishan Bai, Qiang Yang, Fengqin He