Patents by Inventor Limin LEI

Limin LEI 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).

  • Publication number: 20240118159
    Abstract: The disclosure discloses a measuring device for dynamic characteristics of pressure sensitive paint, including a PSP sample wafer, a dynamic pressure sensor, an oscilloscope, a light source, a photomultiplier tube, a bandpass filter, a loudspeaker, a power amplifier, and a signal generator. The disclosure further discloses a measuring method for dynamic characteristics of pressure sensitive paint. The disclosure has the following beneficial effects: by using the measuring device disclosed by the present disclosure, the continuous sinusoidal pressure wave with any frequency can be generated, and has the frequency precision that does not exceed 0.01 Hz, an optical path is not shielded, high stability is achieved, and the amplitude and phase characteristics of the pressure frequency of the PSP can be precisely captured.
    Type: Application
    Filed: March 10, 2023
    Publication date: April 11, 2024
    Applicant: NORTHWESTERN POLYTECHNICAL UNIVERSITY
    Inventors: Limin GAO, Ning GE, Xiangfu Lei, Lei Wang, Bo Ouyang
  • Publication number: 20210093205
    Abstract: A real-time sensing measurement apparatus for a respiratory volume of a tested person includes a controller, a pulse measuring device, a temperature sensor, a flow rate sensor and a storage module. The controller receives an electric signal transmitted by the pulse measuring device, the temperature sensor and the flow rate sensor. The controller, the pulse measuring device, the temperature sensor, the flow rate sensor and the storage module communicate through electric signals. The pulse measuring device, the temperature sensor and the flow rate sensor monitor the respiratory volume of the tested person in real time to obtain test data by the storage module. The different states of the user can be measured in real time by the pulse measuring device, the temperature sensor and the flow rate sensor, and measurement results are rectified in various aspects.
    Type: Application
    Filed: September 9, 2020
    Publication date: April 1, 2021
    Applicant: Chinese Research Academy of Environmental Sciences
    Inventors: Xiuge ZHAO, Danlu WANG, Zhenglei LI, Limin LEI, Ju HUANG, Puqiu ZHAO, Feiyang QIAO