公开(公告)号：US20210333224A1

公开(公告)日：2021-10-28

申请号：US16626572

申请日：2019-05-29

申请人： NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

发明人： Yigang YANG ,  Xuewu WANG ,  Zhi ZHANG ,  Yuanjing LI ,  Jianmin LI

IPC分类号： G01N23/09 ,  G01N23/02 ,  G01N23/05 ,  G01N23/083

摘要： The present disclosure provides a dual mode detection method, controller and system, which relates to the technical field of radiation detection. The dual mode detection method of the present disclosure includes: determining a ratio of neutron to X-ray differential cross sections of an inspected object, according to X-ray object detection data, X-ray object-free detection data, neutron object detection data, and neutron object-free detection data; determining a substance type of the inspected object according to a correspondence between the ratio of neutron to X-ray differential cross sections of the inspected object and the substance type.

公开(公告)号：US20150185164A1

公开(公告)日：2015-07-02

申请号：US14577701

申请日：2014-12-19

申请人： TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

发明人： Zhiqiang CHEN ,  Yigang YANG ,  Xuewu WANG ,  Qinjian ZHANG ,  Huaibi CHEN ,  Yuanjing LI

IPC分类号： G01N23/00 ,  G21G4/02

CPC分类号： G01N23/005 ,  G01V5/0091 ,  G21G4/02

摘要： Embodiments of the present invention disclose a nuclide identification method, a nuclide identification system, and a photoneutron emitter. The photoneutron emitter comprises: a pulsed electron accelerator configured for emitting electrons; and a photoneutron converting target configured to receive the electrons emitted by the pulsed electron accelerator and convert the electrons into photoneutrons. The photoneutron converting target has a volume of about 100 to about 8000 cm3, of about 100 to about 2500 cm3, or of about 785 cm3. These embodiments of the present invention can improve an accuracy of identification of a nuclide, and provide a practical photoneutron emitter, method and system for identifying a nuclide.Especially, these embodiments of the present invention can improve an accuracy of identification of a fissile nuclide such as 233U, 235U, and 239Pu, and provide a practical photoneutron emitter, method and system for identifying a fissile nuclide such as 233U, 235U, and 239Pu.

摘要翻译： 本发明的实施例公开了核素识别方法，核素鉴定系统和光子中子发射体。 光子中子发射体包括：配置用于发射电子的脉冲电子加速器; 以及被配置为接收由脉冲电子加速器发射的电子并将电子转换成光子酮的光子中子转换目标。 光子中子转化靶具有约100至约8000cm 3，约100至约2500cm 3或约785cm 3的体积。 本发明的这些实施方案可以提高核素的鉴定精度，并提供实用的光子中子发射体，用于识别核素的方法和系统。 特别地，本发明的这些实施例可以提高诸如233U，235U和239Pu之类的裂变核素的鉴定准确度，并提供一种实用的光子中子发射体，用于识别易裂变核素的方法和系统，例如233U，235U和239Pu 。

公开(公告)号：US20170329039A1

公开(公告)日：2017-11-16

申请号：US15411359

申请日：2017-01-20

申请人： TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

发明人： Kejun KANG ,  Jianping CHENG ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Junli LI ,  Xuewu WANG ,  Zhi ZENG ,  Qingjun ZHANG ,  Jianping GU ,  Xi YI ,  Bicheng LIU ,  Guangming XU ,  Yongqiang WANG

IPC分类号： G01V5/00

CPC分类号： G01V5/0075 ,  G01V5/0016 ,  G01V5/0091

摘要： The present disclosure relates to a method, a device and a system for inspecting a moving object based on cosmic rays, pertaining to the field of radiation imaging and safety inspection techniques. The method includes: detecting whether a speed of the inspected moving object is within a preset range; recording a motion trajectory of the moving object with a monitoring device; acquiring information about charged particles in the cosmic rays with a position sensitive detector, the information about charged particles including track information of the charged particles; determining the moving object by matching positions of the motion trajectory and the track information; reconstructing the track of the charged particles according to the information about the charged particles; and recognizing the material inside the moving object based on the track reconstruction.

公开(公告)号：US20160231453A1

公开(公告)日：2016-08-11

申请号：US14769308

申请日：2014-07-22

申请人： NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

发明人： Kejun KANG ,  Jianmin LI ,  Yuanjing LI ,  Yulan LI ,  Jingyu GU ,  Weizhen WANG ,  Quanwei SONG ,  Qingjun ZHANG ,  Shenjin MING ,  Xuewu WANG ,  Hui GONG ,  Tao XUE

IPC分类号： G01V5/00

CPC分类号： G01V5/0016 ,  G01V5/0075

摘要： The present application discloses a detector module, which is arranged on a detector arm, comprising one or a plurality of detector units arranged in a scattered configuration, wherein each of the detector units in the detector module is installed aiming at a beam center of a ray source, thus improving imaging quality and reducing the size of a detector frame drastically.

摘要翻译： 本申请公开了一种检测器模块，其布置在检测器臂上，包括以散射构型布置的一个或多个检测器单元，其中检测器模块中的每个检测器单元安装成瞄准射线的束中心 源，从而提高成像质量并大大减小检测器的尺寸。

公开(公告)号：US20210025836A1

公开(公告)日：2021-01-28

申请号：US16935415

申请日：2020-07-22

申请人： Tsinghua University ,  NUCTECH COMPANY LIMITED

发明人： Zhi ZENG ,  Xingyu PAN ,  Xuewu WANG ,  Junli LI ,  Ming ZENG ,  Jianmin LI ,  Ziran ZHAO ,  Jianping CHENG ,  Hao MA ,  Hui ZHANG ,  Hao YU ,  Bicheng LIU

IPC分类号： G01N23/201 ,  G01N23/02 ,  G06K9/62

摘要： The present disclosure provides a substance identification device and a substance identification method. The substance identification device comprises: a classifier establishing unit configured to establish a classifier based on scattering density values reconstructed for a plurality of known sample materials, wherein the classifier comprises a plurality of feature regions corresponding to a plurality of characteristic parameters for the plurality of known sample materials, respectively; and an identification unit for a material to be tested, configured to match the characteristic parameter of the material to be tested with the classifier, and to identify a type of the material to be tested by obtaining a feature region corresponding to the characteristic parameter of the material to be tested.

公开(公告)号：US20170329038A1

公开(公告)日：2017-11-16

申请号：US15411348

申请日：2017-01-20

申请人： TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

发明人： Kejun KANG ,  Zhiqiang CHEN ,  Yuanjing LI ,  Ziran ZHAO ,  Junli LI ,  Xuewu WANG ,  Yaohong LIU ,  Zhi ZENG ,  Jianping GU ,  Song LIANG ,  Bicheng LIU ,  Guangming XU ,  Yongqiang WANG

IPC分类号： G01V5/00

CPC分类号： G01V5/0016 ,  G01N2223/205 ,  G01T1/167 ,  G01T5/002 ,  G01T5/02 ,  G01V5/0025 ,  G01V5/0075 ,  G01V5/0091 ,  G06K9/6267

摘要： The present application relates to a method, apparatus and system for inspecting an object based on a cosmic ray, pertaining to the technical field of radiometric imaging and safety inspection. The method includes: recording a movement trajectory of an inspected object by using a monitoring device; acquiring information of charged particles in the cosmic ray by using a position-sensitive detector, the information of charged particles comprising trajectory information of the charged particles; performing position coincidence for the movement trajectory and the trajectory information to determine the object; performing trajectory remodeling for the charged particles according to the information of charged particles; and identifying a material inside the moving object according to the trajectory remodeling. According to the present disclosure, pedestrians who are walking and moving are inspected by using the cosmic ray, and nuclear materials, drugs and explosive materials and the like carried by human bodies may be detected.

公开(公告)号：US20160170073A1

公开(公告)日：2016-06-16

申请号：US14965122

申请日：2015-12-10

申请人： Nuctech Company Limited

发明人： Jianmin LI ,  Yulan LI ,  Jingyu GU ,  Yuanjing LI ,  Quanwei SONG ,  Weizhen WANG ,  Dongyu WANG ,  Zhiqiang CHEN ,  Chaunxiang TANG ,  Yinong LIU ,  Junli LI ,  Tao XUE ,  Hui Gong ,  Xuewu WANG

IPC分类号： G01V5/00 ,  B60R11/00

CPC分类号： G01V5/0016 ,  B60R11/00 ,  B60R2011/004

摘要： A vehicle mounted mobile container or vehicle inspection system, including: a radiation source, a movable vehicle for carrying the inspection system, and a detector arm rack which has a horizontal arm and a vertical arm, a first end of the horizontal arm is connected to the vehicle and a second end thereof is connected to an end of the vertical arm. The horizontal arm and the vertical arm are connected by a pivotal connecting device such that the vertical arm may pivot in a vertical plane, and the horizontal arm and the vertical arm may be retracted in a same horizontal plane. The novel arm rack construction may reduce the space occupied by it on top of the scanning vehicle after the arm rack is stowed so as to reduce the eight of the scanning vehicle under running condition.

摘要翻译： 一种车载移动容器或车辆检查系统，包括：辐射源，用于携带检查系统的移动车辆和具有水平臂和垂直臂的检测器臂架，水平臂的第一端连接到 车辆及其第二端连接到垂直臂的一端。 水平臂和垂直臂通过枢转连接装置连接，使得垂直臂可以在垂直平面中枢转，并且水平臂和垂直臂可以在相同的水平面中缩回。 新型臂架结构可以在搁架臂架之后减小扫描车辆顶部占据的空间，以便在运行状态下减少扫描车辆的八个。

公开(公告)号：US20220066056A1

公开(公告)日：2022-03-03

申请号：US17415578

申请日：2019-11-28

申请人： Tsinghua University

发明人： Tianyu MA ,  Yaqiang LIU ,  Xuewu WANG ,  Zhong WANG

IPC分类号： G01T1/29 ,  G21K1/02

摘要： The present disclosure provides a gamma ray imaging device and an imaging method, where the imaging device includes a plurality of separate detectors. The plurality of separate detectors are provided at an appropriate spatial position, in an appropriate arrangement manner and are of an appropriate detector material, such that when rays emitted from different positions in an imaging area reach at least one of the plurality of separate detectors, at least one of the thicknesses of the detectors, the materials of the detectors, and the numbers of the detectors though which the rays pass are different, thereby achieving the effect of determining the directions of rays.