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    DETECTOR, AND DETECTING SYSTEM AND METHOD FOR DIVIDING ENERGY REGIONS INTELLIGENTLY
    13.
    发明申请
    DETECTOR, AND DETECTING SYSTEM AND METHOD FOR DIVIDING ENERGY REGIONS INTELLIGENTLY 审中-公开

    公开(公告)号：US20180059264A1

    公开(公告)日：2018-03-01

    申请号：US15602478

    申请日：2017-05-23

    Applicant: Nuctech Company Limited

    Inventor： Lan Zhang ,  Yingshuai Du ,  Bo Li ,  Zonggui Wu ,  Jun Li ,  Xuepeng Cao ,  Haifan Hu ,  Jianping Gu ,  Guangming Xu ,  Bicheng Liu

    IPC: G01T1/24 ,  G06T7/70 ,  G06T7/11

    CPC classification number: G01T1/241 ,  G06T7/11 ,  G06T7/70 ,  G06T2207/10116

    Abstract: The disclosure provides a detector, and a detecting system and method for dividing energy regions intelligently. The detecting method may comprise: collecting, by a detector, rays transmitted through a detected object and generating a detection signal according to the rays; wherein each column of pixels of the detector comprises one class-A electrode and a plurality of class-B electrodes, and the class-A electrode and the class-B electrodes are arranged sequentially in a moving direction of the detected object, such that the rays transmitted through the detected object firstly enter into the class-A electrode and then into the class-B electrodes; obtaining image data of the detected object based on the detection signal corresponding to the class-A electrode, and estimating a material component of the detected object based on the image data; adjusting one or more thresholds for dividing the energy regions according to the estimated material component; and determining energy regions to which the detection signal corresponding to the class-B electrodes belongs, according to the adjusted one or more thresholds, and calculating a number of signals in each energy region, so as to obtain the image data of the detected object and determine components of the detected object accurately.

    Multi-energy-spectrum X-ray imaging system and method of substance identification of item to be inspected by using the same
    15.
    发明授权
    Multi-energy-spectrum X-ray imaging system and method of substance identification of item to be inspected by using the same 有权

    公开(公告)号：US11112528B2

    公开(公告)日：2021-09-07

    申请号：US16314093

    申请日：2017-09-12

    Applicant: Nuctech Company Limited

    Inventor： Guangming Xu ,  Bicheng Liu ,  Ziran Zhao ,  Jianping Gu ,  Qiang Li ,  Lan Zhang

    IPC: G01V5/00 ,  G01N23/087 ,  G01R23/18

    Abstract: The present disclosure discloses a method of substance identification of an item to be inspected using a multi-energy-spectrum X-ray imaging system, the method comprising: acquiring a transparency related vector consisting of transparency values of the item to be inspected in N energy regions, wherein N is greater than 2; calculating distances between the transparency related vector and transparency related vectors stored in the system consisting of N transparency mean values of multiple kinds of items with multiple thicknesses in the N energy regions; and identifying the item to be inspected as the item corresponding to the minimum distance. The present disclosure is based on a multi-energy-spectrum X-ray imaging system, and proposes a method of substance identification by analyzing the multi-energy-spectrum substance identification issue. Compared with the conventional dual-energy X-ray system, the multi-spectrum imaging can significantly improve the system's ability to identify substances in theory, especially in the field of security applications. The improvement of substance identification is important for contraband inspection, such as, drugs, explosives.

    Semiconductor detector
    17.
    发明授权
    Semiconductor detector 有权

    公开(公告)号：US10388818B2

    公开(公告)日：2019-08-20

    申请号：US15625473

    申请日：2017-06-16

    Applicant: NUCTECH COMPANY LIMITED

    Inventor： Lan Zhang ,  Yingshuai Du ,  Bo Li ,  Zonggui Wu ,  Jun Li ,  Xuepeng Cao ,  Haifan Hu ,  Jianping Gu ,  Guangming Xu ,  Bicheng Liu

    IPC: H01L31/118 ,  G01T1/24 ,  G01T1/02 ,  H01L27/144 ,  H01L31/0224 ,  H01L31/028 ,  H01L31/0296 ,  H01L31/0304 ,  H01L31/032

    Abstract: There is provided a semiconductor detector. According to an embodiment, the semiconductor detector may include a semiconductor detection material including a first side and a second side opposite to each other. One of the first side and the second side is a ray incident side that receives incident rays. The detector may further include a plurality of pixel cathodes disposed on the first side and a plurality of pixel anodes disposed on the second side. The pixel anodes and the pixel cathodes correspond to each other one by one. The detector may further include a barrier electrode disposed on a periphery of respective one of the pixel cathodes or pixel anodes on the ray incident side. According to the embodiment of the present disclosure, it is possible to effectively suppress charge sharing between the pixels and thus to improve an imaging resolution of the detector.

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