METHOD FOR MEASURING GAS PRESSURE OF CLOSE-DISTANCE SEAM GROUP SIMULTANEOUSLY

    公开(公告)号:US20240068359A1

    公开(公告)日:2024-02-29

    申请号:US18505882

    申请日:2023-11-09

    CPC classification number: E21B47/06 E21B33/13

    Abstract: Disclosed is a method for measuring gas pressure of a close-distance seam group simultaneously, including the following steps: constructing a pressure-measuring drill hole inclined downwards; lowering a first seam piezometer tube, lowering a baffle and a polyurethane blocking material after a tube head reaching a lowermost seam; and installing a gas pressure gauge; lowering a second seam piezometer tube, lowering the baffle and the polyurethane blocking material after the tube head reaching a second layer of seam; and installing the gas pressure gauge; lowering a nth seam piezometer tube, lowering the baffle and the polyurethane blocking material after the tube head reaching a nth layer of seam; and installing the gas pressure gauge; injecting a high-water and quick-solidifying material into the drill hole; and connecting the gas pressure gauges through optical fibers, and connecting the gas pressure gauges with a ground control system.

    Reconfigurable intelligent metasurface with adjustable 3-bit dual-polarization phases

    公开(公告)号:US11715888B1

    公开(公告)日:2023-08-01

    申请号:US17990628

    申请日:2022-11-18

    CPC classification number: H01Q21/065 H01Q9/0414

    Abstract: A reconfigurable intelligent metasurface with adjustable 3-bit dual-polarization phases may include a plurality of reconfigurable intelligent metasurface units with adjustable 3-bit dual-polarization phases. Each of the plurality of reconfigurable intelligent metasurface units may include: a first layer including four fan-shaped metal patches and four Y-shaped metal patches symmetrical about a center, a second layer being a feeding layer along the x-axis direction, a third layer being a feeding layer along the y-axis direction, and a fourth layer being a metal ground layer. By changing a voltage value at two ends of each of the varactors in an orthogonal polarization direction, the reconfigurable intelligent metasurface unit may be enabled to independently implement dual-polarization 3-bit phase modulation in two orthogonal polarization directions, thereby implementing decoupling in the orthogonal polarization directions.

    TRANSFORMER-BASED DRIVER DISTRACTION DETECTION METHOD AND APPARATUS

    公开(公告)号:US20230186652A1

    公开(公告)日:2023-06-15

    申请号:US17662796

    申请日:2022-05-10

    Abstract: The present disclosure provides a transformer-based driver distraction detection method and apparatus, belonging to the field of driving behavior analysis. The method includes: acquiring districted driving image data; building a driver distraction detection model FPT; inputting the acquired distracted driving image data into the driver distraction detection model FPT, analyzing the distracted driving image data by using the driver distraction detection model FPT, and determining a driver distraction state according to an analysis result. The present disclosure proposes a new network model, i.e., a driver distraction detection model FPT, based on Swin, Twins, and other models. Compared with a deep learning model, the FPT model compensates for the drawback that the deep learning model can only extract local features; the FPT model improves the classification accuracy and reduces the parameter quantity and calculation amount compared with the transformer model. The present disclosure adjusts the loss function of the whole network and adds label smoothing to the cross-entropy loss function, to increase the accuracy of classification, effectively suppress overfitting, and improve the detection accuracy.

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