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    System and methods for field monitoring of stationary assets
    4.
    发明授权
    System and methods for field monitoring of stationary assets 有权

    公开(公告)号：US11768098B2

    公开(公告)日：2023-09-26

    申请号：US17229279

    申请日：2021-04-13

    申请人： E. Strode Pennebaker, III

    发明人： E. Strode Pennebaker, III

    IPC分类号： G01F23/80 ,  G01F23/14 ,  H01F7/02

    CPC分类号： G01F23/80 ,  G01F23/14 ,  H01F7/0252

    摘要： A system for monitoring a fill level of a container includes a wireless module disposed on the container including an enclosure, a processor and a wireless transceiver disposed within the enclosure, and a cable mounted to the enclosure. A first pressure sensor is attached to an end of the cable distal from the enclosure and a second pressure sensor is attached to an opposite end within the enclosure. The enclosure is mounted outside of the container. The cable is inserted into the container such that the first pressure sensor is disposed near a bottom of the container. The first pressure sensor measures a pressure at the bottom of the container. The second pressure sensor measures a pressure outside of the container. The readings from the first pressure sensor and the second pressure sensor are cross-correlated to determine a net pressure for use in calculating the fill level of the container.

    Fluid level monitoring system and method incorporating pressure sensor system having inflatable/collapsible bag
    5.
    发明授权
    Fluid level monitoring system and method incorporating pressure sensor system having inflatable/collapsible bag 有权

    公开(公告)号：US11692433B2

    公开(公告)日：2023-07-04

    申请号：US17873529

    申请日：2022-07-26

    申请人： Q.E.D. Environmental Systems, Inc.

    发明人： John F. Schaupp ,  William C. Allen

    IPC分类号： E21B47/047 ,  E21B47/06 ,  G01F23/14

    CPC分类号： E21B47/047 ,  E21B47/06 ,  G01F23/14

    摘要： The present disclosure relates to a fluid level sensing system for sensing a fluid level in a well. The system has an upper housing in communication with a lower housing, with the lower housing having a first bore in communication with a fluid in the well, and a second bore isolated from the first bore and in communication with at least one of a vacuum gauge or an external vacuum source. The upper and lower housings house a first flexible bag and a second flexible bag, with the first bag housed within the second bag. A portion of the first bag communicates with the first bore and is responsive to a change in pressure within the first bore caused by a changing fluid level in the well. A portion of the second bag communicates with the second bore and exerts a reference pressure on the first bag. A sensing subsystem senses expanding and contracting movement of the bags and generates a signal indicative of a change in a level of the fluid in the well.

    SLIDING DISCRETE FOURIER TRANSFORM (DFT) BINS FOR FUEL QUANTITY MEASUREMENTS
    6.
    发明公开
    SLIDING DISCRETE FOURIER TRANSFORM (DFT) BINS FOR FUEL QUANTITY MEASUREMENTS 审中-公开

    公开(公告)号：US20230160766A1

    公开(公告)日：2023-05-25

    申请号：US17990876

    申请日：2022-11-21

    申请人： Simmonds Precision Products, Inc.

    发明人： Aswin Kumar Vallamkondu ,  David H. Crowne ,  Prashant Vadgaonkar ,  Venkata Sai Sudheer

    IPC分类号： G01L9/00 ,  G01F23/14 ,  B64D37/04

    CPC分类号： G01L9/0077 ,  B64D37/04 ,  G01F23/14

    摘要： A method includes receiving wavelength domain data for a time step, performing a Discrete Fourier Transform (DFT) to transform the wavelength domain data for the time step into frequency domain data for the time step only for the limited set of frequency bins associated with a frequency of interest, calculating pressure based on the frequency domain data for the time step, and updating the frequency of interest and the limited set of frequency bins. The method includes repeating receiving wavelength data for subsequent time steps, performing a DFT to transform the wavelength data for the respective subsequent time steps, calculating pressure for each subsequent time step, and updating the frequency of interest and limited set of frequency bins for each subsequent time step. The method includes outputting pressure data based on calculating pressure for the subsequent time steps.