Patents by Inventor Chuliang RUAN

Chuliang RUAN 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).

  • Noninvasive measuring method for rapid temperature variation under DC excitation magnetic field
    Patent number: 9958342
    Abstract: Provided is a noninvasive measuring method for rapid temperature variation under a DC excitation magnetic field, comprising: (1) positioning ferromagnetic particles at a measured object; (2) applying a DC magnetic field to area of the ferromagnetic particles enabling the ferromagnetic particles to reach saturation magnetization state; (3) obtaining steady temperature T1 of the measured object at room temperature, and calculating initial spontaneous magnetization M1, of the ferromagnetic particles according to the steady temperature T1; (4) detecting amplitude A of a magnetization variation signal of the ferromagnetic particles after temperature of the measured object varies, and calculating temperature T2 after change according to the amplitude A of the magnetization variation signal; and (5) calculating temperature variation ?T=T2-T1 according to the temperature T2 after change and the steady temperature T1.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: May 1, 2018
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Wenzhong Liu, Pu Zhang, Chuliang Ruan, Wenbiao Xu
  • NONINVASIVE MEASURING METHOD FOR RAPID TEMPERATURE VARIATION UNDER DC EXCITATION MAGNETIC FIELD
    Publication number: 20160252405
    Abstract: Provided is a noninvasive measuring method for rapid temperature variation under a DC excitation magnetic field, comprising: (1) positioning ferromagnetic particles at a measured object; (2) applying a DC magnetic field to area of the ferromagnetic particles enabling the ferromagnetic particles to reach saturation magnetization state; (3) obtaining steady temperature T1 of the measured object at room temperature, and calculating initial spontaneous magnetization M1, of the ferromagnetic particles according to the steady temperature T1; (4) detecting amplitude A of a magnetization variation signal of the ferromagnetic particles after temperature of the measured object varies, and calculating temperature T2 after change according to the amplitude A of the magnetization variation signal; and (5) calculating temperature variation ?T=T2-T1 according to the temperature T2 after change and the steady temperature T1.
    Type: Application
    Filed: September 11, 2014
    Publication date: September 1, 2016
    Inventors: Wenzhong LIU, Pu ZHANG, Chuliang RUAN, Wenbiao XU