High-speed security inspection system

    公开(公告)号:US11119245B2

    公开(公告)日:2021-09-14

    申请号:US16878982

    申请日:2020-05-20

    Abstract: The present specification discloses a high speed scanning system for scanning cargo carried by rail. The system uses of a two-dimensional X-ray sensor array with, in one embodiment, a cone-beam X-ray geometry. The pulse rate of X-ray source is modulated based on the speed of the moving cargo to allow a distance travelled by the cargo between X-ray pulses to be equal to the width of the detector, for a single energy source, and to half the width of the detector for a dual energy source. This ensures precise timing between the X-ray exposure and the speed of the passing object, and thus accurate scanning of cargo even at high speeds.

    Systems and Methods for Compton Scatter And/Or Pulse Pileup Detection

    公开(公告)号:US20210231819A1

    公开(公告)日:2021-07-29

    申请号:US17156229

    申请日:2021-01-22

    Abstract: Systems and methods for detecting Compton scatter are provided. The system includes a first detector configured to detect incident radiation and output a first detector signal; more than one second detectors surrounding the first detector and configured to detect incident radiation scattered by the first detector, wherein each of the second detectors output a second detector signal, and wherein a signal decay time of the first detector signal differs from the signal decay time of the second detector signals; and a digitizer configured to receive a single input consisting of output signals from each of the first detector and the plurality of second detectors, wherein the digitizer is further configured to simultaneously digitize the signals to produce a digitized output waveform, and wherein a shape of the output waveform is indicative of a presence or an absence of a Compton scatter signal. The systems and methods are also configured to detect pulse pileup, with or without second detectors.

    X-Ray Scanners
    135.
    发明申请

    公开(公告)号:US20210165122A1

    公开(公告)日:2021-06-03

    申请号:US17123452

    申请日:2020-12-16

    Abstract: The present application discloses an X-ray scanner having an X-ray source arranged to emit X-rays from source points through an imaging volume. The scanner may further include an array of X-ray detectors which may be arranged around the imaging volume and may be arranged to output detector signals in response to the detection of X-rays. The scanner may further include a conveyor arranged to convey an object through the imaging volume in a scan direction, and may also include at least one processor arranged to process the detector signals to produce an image data set defining an image of the object. The image may have a resolution in the scan direction that is at least 90% as high as in one direction, and in some cases two directions, orthogonal to the scan direction.

    X-ray scanner with partial energy discriminating detector array

    公开(公告)号:US10782440B2

    公开(公告)日:2020-09-22

    申请号:US16432827

    申请日:2019-06-05

    Abstract: The present specification describes a scanning/inspection system configured as a dual-view system using dual-energy sensitive stacked detectors that are partially populated with multi-energy discriminating detectors for overall enhanced energy resolution and therefore improved discrimination of materials through better estimation of material physical properties such as density and effective atomic number.

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