公开(公告)号：US10983243B2

公开(公告)日：2021-04-20

申请号：US16491891

申请日：2017-12-20

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Wanlong Wu ,  Ming Ruan ,  Yingkang Jin ,  Guangwei Ding ,  Zongjun Shen ,  Jiajiang Zhao

IPC: G01V5/00 ,  G21K1/10 ,  G01N23/203

Abstract: A human body security inspection apparatus, a method of operating the same, and an associated filter device are disclosed. The human body security inspection apparatus includes a radiation beam exit configured for emitting a radiation beam; a beam guiding box configured for guiding the radiation beam; and a filter device configured between the radiation beam exit and the beam guiding box. The filter device includes a housing and a filter cage having a central axis. The filter cage is formed by arranging two or more pairs of filtering sheets, which are made of different materials and/or have different thicknesses, in an encircling way. The filter cage is rotatable about its central axis such that at least one pair of filtering sheets is capable of filtering the radiation beam to adjust an outputted dosage of the radiation beam of the human body security inspection apparatus.

公开(公告)号：US09846258B2

公开(公告)日：2017-12-19

申请号：US14792066

申请日：2015-07-06

Applicant: NUCTECH COMPANY LIMITED

Inventor： Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Wanlong Wu ,  Yingkang Jin ,  Le Tang ,  Chengcong Xu ,  Ming Ruan ,  Guangwei Ding

IPC: G01N23/201 ,  G01V5/00 ,  G01N23/203

CPC classification number: G01V5/0025 ,  G01N23/203 ,  G01V5/0066

Abstract: The present disclosure provides an X-ray backscattering safety inspection system, comprising: one or more backscattering inspection subsystem configured to inspect an object to be inspected by emitting X-ray beams towards the object to be inspected and inspecting scattering signals; and a control subsystem configured to adjust a distance between the backscattering inspection subsystem and locations on a side of the object to be inspected where are irradiated by the X-ray beams in real time according to a size of the object to be inspected such that the scattering signals inspected are optimized. The system may be adapted to objects to be inspected with different sizes or shapes while enhancing backscattering signals for imaging.

公开(公告)号：US09829601B2

公开(公告)日：2017-11-28

申请号：US14367824

申请日：2012-12-20

Applicant: NUCTECH COMPANY LIMITED

Inventor： Qiang Wang ,  Kun Zhao ,  Ming Ruan

IPC: G01T1/00 ,  G01V5/00 ,  G01T7/00 ,  G01T1/169

CPC classification number: G01V5/0008 ,  G01T1/00 ,  G01T1/169 ,  G01T7/00

Abstract: A method for patrol inspecting and locating a radioactive substance, comprising: providing a background radioactive intensity value of environment; collecting radioactive intensity values from a inspecting region by a detector at a plurality of sampling points on a patrol inspection route; calculating a radioactive intensity distribution in the inspecting region on basis of the collected radioactive intensity values and the background radioactive intensity value; and determining a position of the radioactive substance on basis of the radioactive intensity distribution. Furthermore, a device for patrol inspecting and locating a radioactive substance comprises: two or more detectors configured to collect radioactive intensity values from a inspecting region around a patrol inspection route, at each of a plurality of sampling points on the patrol inspection route; and a movable carrier configured to carry the detector and to move along the patrol inspection route to pass by the sampling points. The method and device can obtain the position and the radioactive intensity distribution of the radioactive substance within the inspecting region on basis of the multiple-point observation on the patrol inspection route.

公开(公告)号：US09651507B2

公开(公告)日：2017-05-16

申请号：US14572528

申请日：2014-12-16

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang Chen ,  Ziran Zhao ,  Yuanjing Li ,  Wanlong Wu ,  Ming Ruan ,  Li Zhang ,  Yingkang Jin ,  Le Tang ,  Xianli Ding ,  Chenguang Zhu

IPC: G01N23/203 ,  G01T1/167 ,  G01V5/00

CPC classification number: G01N23/203 ,  G01T1/167 ,  G01V5/0025 ,  G01V5/0091

Abstract: A human body back-scattering inspection method and system are discloses. The method includes: obtaining a back-scattering scan image of a human body under inspection; distinguishing a body image from a background image in the back-scattering scan image; and calculating a feature parameter of the background image to determine whether radioactive substance is carried with the human body. With some embodiments of the present disclosure, it is possible to determine whether any radioactive substance is carried with a human body during back-scattering inspection of the human body. In further embodiments of the present disclosure, it is possible to approximately determine which part(s) of the human body carries the radioactive substance. This improves efficiency of inspection.

公开(公告)号：US09366642B2

公开(公告)日：2016-06-14

申请号：US14135840

申请日：2013-12-20

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Ziran Zhao ,  Zhiqiang Chen ,  Yuanjing Li ,  Wanlong Wu ,  Ming Ruan ,  Yinong Liu ,  Yingkang Jin ,  Le Tang ,  Yanjie Wen ,  Xiuwei Chen ,  Fuhua Ding ,  Bin Sang ,  Zongjun Shen

IPC: G01N23/203 ,  G01T1/167 ,  G01V5/00 ,  A61B6/00

CPC classification number: G01N23/203 ,  A61B6/4021 ,  A61B6/4266 ,  A61B6/483 ,  G01T1/167 ,  G01V5/0025

Abstract: A human body back-scattering inspection system is disclosed. The system comprises a flying-spot forming unit configured to output beams of X-rays, a plurality of discrete detectors which are arranged vertically along a human body to be inspected, and a controlling unit coupled to the flying-spot forming unit and the plurality of detectors, and configured to generate a control signal to control the flying-spot forming unit and the plurality of detectors to perform a partition synchronous scan on the human body to be inspected vertically. The present disclosure utilizes the geometry property of the human body back-scattering inspection system, and proposes a multiple-point synchronous scan mechanism which largely accelerates the inspection of human body.

Abstract translation: 公开了一种人体背散射检查系统。 该系统包括：飞点形成单元，被配置为输出X射线束;沿着待检查的人体垂直排列的多个离散检测器;以及耦合到飞点形成单元和多个 的检测器，并且被配置为产生控制信号以控制飞点形成单元和多个检测器，以对垂直检查的人体进行分区同步扫描。 本发明利用人体背散射检查系统的几何特性，并提出了一种大大加速人体检查的多点同步扫描机构。

公开(公告)号：US20160003967A1

公开(公告)日：2016-01-07

申请号：US14792066

申请日：2015-07-06

Applicant: NUCTECH COMPANY LIMITED

Inventor： Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Wanlong Wu ,  Yingkang Jin ,  Le Tang ,  Chengcong Xu ,  Ming Ruan ,  Guangwei Ding

IPC: G01V5/00 ,  G01N23/203

CPC classification number: G01V5/0025 ,  G01N23/203 ,  G01V5/0066

Abstract: The present disclosure provides an X-ray backscattering safety Inspection system, comprising: one or more backscattering inspection subsystem configured to inspect an object to be inspected by emitting X-ray beams towards the object to be inspected and inspecting scattering signals; and a control subsystem configured to adjust a distance between the backscattering inspection subsystem and locations on a side of the object to be inspected where are irradiated by the X-ray beams in real time according to a size of the object to be inspected such that the scattering signals inspected are optimized. The system may be adapted to objects to be inspected with different sizes or shapes while enhancing backscattering signals for imaging.

Abstract translation: 本公开提供一种X射线后向散射安全检查系统，包括：一个或多个后向散射检查子系统，被配置为通过向被检查物体发射X射线束并检查散射信号来检查被检查物体; 以及控制子系统，被配置为根据被检查对象的大小实时地调整后向散射检查子系统与待检查对象侧的位置之间的距离，其中被X射线束照射的位置实时地被调整， 检查的散射信号被优化。 该系统可以适应于具有不同尺寸或形状的待检查对象，同时增强用于成像的后向散射信号。

公开(公告)号：US09846257B2

公开(公告)日：2017-12-19

申请号：US14790947

申请日：2015-07-02

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Zhiqiang Chen ,  Ziran Zhao ,  Wanlong Wu ,  Yingkang Jin ,  Le Tang ,  Ming Ruan ,  Xiao Tang ,  Guangwei Ding

IPC: G01N23/201 ,  G01V5/00 ,  G01N23/203

CPC classification number: G01V5/0025 ,  G01N23/203

Abstract: The present disclosure provides a mobile back scattering imaging security inspection apparatus, comprising: a back scattering scanner (2), a detector (3), a controller (4), and a movable stage (1) configured to carry the back scattering scanner, the detector and the controller and being movable with respect to the object to be inspected; wherein the back scattering scanner is a distributed X-ray source comprising a plurality of target points (201), each of which is able to emit the ray beam individually, and wherein the back scattering scanner, the detector and the controller perform an imaging security inspection operation on the object to be inspected during moving along with the movable stage with respect to the object.

公开(公告)号：USD804670S1

公开(公告)日：2017-12-05

申请号：US29567397

申请日：2016-06-08

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Designer： Ziran Zhao ,  Wanlong Wu ,  Yingkang Jin ,  Guangwei Ding ,  Ming Ruan

公开(公告)号：US20170068017A1

公开(公告)日：2017-03-09

申请号：US15230316

申请日：2016-08-05

Applicant: NUCTECH COMPANY LIMITED ,  NUCTECH JIANGSU COMPANY LIMITED

Inventor： Ziran ZHAO ,  Zhiqiang Chen ,  Wanlong Wu ,  Li Zhang ,  Yingkang Jin ,  Ming Ruan

IPC: G01V5/00

CPC classification number: G01V5/0016

Abstract: A safety inspection apparatus is disclosed in embodiments of the present invention. The safety inspection apparatus includes: an x-ray source including a ray emission focal spot; and a plurality of detector modules each of which has a ray receiving surface, and which are arranged along a plurality of straight line segments. The plurality of straight line segments include a first straight line segment and two second straight line segments, and, the two second straight line segments extend from the two ends of the first straight line segment towards the x-ray source side, respectively. In a plane where the sectorial ray beam is located, a normal to the ray receiving surface of each of the detector modules at a midpoint of the ray receiving surface of the each of the detector modules passes generally through the ray emission focal spot of the x-ray source.

Abstract translation: 在本发明的实施例中公开了一种安全检查装置。 安全检查装置包括：x射线源，包括射线发射焦点; 以及多个检测器模块，每个检测器模块具有一个光线接收表面，并沿着多条直线段布置。 多个直线段包括第一直线段和两个第二直线段，并且两个第二直线段分别从第一直线段的两端朝向x射线源侧延伸。 在扇形射线束所在的平面中，每个检测器模块的射线接收表面的中点处的每个检测器模块的射线接收表面的法线通常通过x的射线发射焦斑 来源。

公开(公告)号：US10458928B2

公开(公告)日：2019-10-29

申请号：US15578131

申请日：2016-05-19

Applicant: Nuctech Company Limited ,  Nuctech Jiangsu Company Limited

Inventor： Zhiqiang Chen ,  Wanlong Wu ,  Ziran Zhao ,  Guangwei Ding ,  Ming Ruan ,  Xilei Luo

IPC: G21K1/02 ,  G01N23/223 ,  G01N23/083 ,  G01N23/02

Abstract: Embodiments of the present disclosure provide a collimating device and a ray inspection device. The collimating device comprises: a beam guiding cylinder, a first collimator mounted at an inlet end of the beam guiding cylinder; a second collimator mounted an outlet end of the beam guiding cylinder; a beam guiding cylinder adjusting device disposed adjacent to the inlet of the beam guiding cylinder to adjust a direction of the beam guiding cylinder such that the first collimator is aligned with the first direction. The outlet end of the beam guiding cylinder is fixed to the frame and the second collimator is aligned with an object to be irradiated by a radiation beam, and the beam guiding cylinder is configured to have flexibility to allow the adjusting device to adjust a direction towards which the inlet end of the beam guiding cylinder is directed, in a direction transverse to the first direction.