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    Detection system and method
    1.
    发明授权
    Detection system and method 有权

    公开(公告)号：US10295481B2

    公开(公告)日：2019-05-21

    申请号：US15262894

    申请日：2016-09-12

    申请人： Tsinghua University ,  NUCTECH COMPANY LIMITED

    发明人： Zhiqiang Chen ,  Li Zhang ,  Tianyi Yang Dai ,  Ji Zhao ,  Xin Jin ,  Ming Chang

    IPC分类号： G01N23/20 ,  G01N23/00 ,  G01N23/046 ,  G01N23/083 ,  G01N23/207 ,  G21K1/02 ,  G01V5/00

    摘要： The present disclosure relates to detection systems and methods. One illustrative detection system may include a distributed radiation source having a plurality of radiation source focus points, which irradiate an object under detection, wherein the plurality of radiation source focus points are divided into a certain number of groups, and a primary collimator that limits rays of each of the radiation source focus points such that the rays emit into an XRD detection device. An XRD detection device may include a plurality of XRD detectors that are divided into the same number of groups as the radiation source focus points, wherein XRD detectors in a same group are arranged to be separated by XRD detectors in other groups, and rays of each of the radiation source focus points are received by XRD detectors having the same group number as the group number of the radiation source focus point.

    Method and system for liquid detection
    2.
    发明授权
    Method and system for liquid detection 有权

    公开(公告)号：US10379067B2

    公开(公告)日：2019-08-13

    申请号：US15257595

    申请日：2016-09-06

    申请人： Tsinghua University ,  Nuctech Company Limited

    发明人： Zhiqiang Chen ,  Li Zhang ,  Tianyi Yang Dai ,  Ji Zhao ,  Xin Jin ,  Ming Chang

    IPC分类号： G01N23/00 ,  G01N23/046 ,  G01N23/20 ,  G21K1/02 ,  G01V5/00

    摘要： Systems and methods for liquid detection are disclosed. An illustrative method for liquid detection herein may include implementing CT imaging and XRD imaging on one or more liquid planes of liquid contained in a container at once by rotating the container so that X-rays from a same radiation source scan a whole area of each of the one or more liquid planes, and generating a substance identification result for the liquid contained in the container based on a CT image and a XRD image, wherein the CT imaging and the XRD imaging are implemented on a same liquid plane or different liquid planes. Consistent with various aspects and features, implementations may identify substances contained in the liquid more quickly and accurately.

    X-ray detection system and method
    4.
    发明授权
    X-ray detection system and method 有权

    公开(公告)号：US10942290B2

    公开(公告)日：2021-03-09

    申请号：US16626169

    申请日：2019-05-16

    申请人： Nuctech Company Limited

    发明人： Li Zhang ,  Zhiqiang Chen ,  Yunda Sun ,  Xin Jin ,  Ming Chang ,  Xiaofei Xu

    IPC分类号： G01N23/20091 ,  G01V5/00

    摘要： The present application discloses an X-ray detection system and method. The detection system includes: a beam source generator, first detectors, a second detector, a collimating device and a processor. The first detectors and the second detector are alternately arranged in a transmission direction of an object to be detected. The beam source generator emits a plurality of columns of beam signals, wherein each column of beam signals comprises a plurality of beam signals; the first detectors receive a plurality of columns of transmitted beam signals passing through the object; the collimating device performs a specificity selection from a plurality of columns of scattered beam signals passing through the object; the second detector receives scattered beam signals selected by the collimating device; and the processor determines a detection result of the object according to the plurality of columns of transmitted beam signals and the selected scattered beam signals.

    CT detection method and CT device
    9.
    发明授权
    CT detection method and CT device 有权

    公开(公告)号：US10175182B2

    公开(公告)日：2019-01-08

    申请号：US14979259

    申请日：2015-12-22

    申请人： GRANDPECT COMPANY LIMITED ,  NUCTECH COMPANY LIMITED

    发明人： Yongshun Xiao ,  Zhiqiang Chen ,  Ming Chang ,  Ziran Zhao

    IPC分类号： G01N23/00 ,  G01N23/046 ,  G06T11/00

    摘要： A CT detection method is provided, comprising the steps of: (1) scanning circumferentially an object to be detected by means of X-ray according to a preset angle sampling value, which represents the number of sampling points in one circle, so as to obtain a group of projection sampling data in different projection angles, the preset angle sampling value being greater than 1000; (2) processing the projection sampling data so as to obtain projection data of a plurality of virtual sub-focuses equivalent to a large focus of radiation source in a CT system; and (3) implementing an image reconstruction according to the projection data of the plurality of virtual sub-focuses.