公开(公告)号：US20190204469A1

公开(公告)日：2019-07-04

申请号：US16234632

申请日：2018-12-28

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Hao YU ,  Ying LI ,  Weizhen WANG ,  Quanwei SONG ,  Dongyu WANG ,  Haojie CHI ,  Jianmin LI ,  Yulan LI ,  Chunguang ZONG ,  Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG

IPC: G01V5/00 ,  G01N23/203

CPC classification number: G01V5/0025 ,  G01N23/203

Abstract: The present disclosure discloses a vehicle-mounted type back scattering inspection system. The vehicle-mounted type back scattering inspection system includes a carriage and a back scattering imaging device, the scanning range of the back scattering imaging device is variable. As the scanning range of the back scattering imaging device of the present disclosure is variably set, the inspection range of the back scattering imaging device can be expanded.

公开(公告)号：US20240085349A1

公开(公告)日：2024-03-14

申请号：US18259772

申请日：2021-12-15

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Zhiqiang CHEN ,  Lei LIU ,  Shangmin SUN ,  Chunguang ZONG ,  Yu HU ,  Yuan MA ,  Zheng JI

IPC: G01N23/04 ,  G01N23/10 ,  G01V5/00

CPC classification number: G01N23/04 ,  G01N23/10 ,  G01V5/0016

Abstract: The present disclosure provides a radiation inspection system, including a container respectively provided with an entrance and an exit on opposite side walls thereof; and a radiation scanning imaging device disposed in the container and having an inspection channel. The radiation scanning imaging device includes a ray source, the ray source includes ray generators, and ray generators are configured to emit ray beams at different angles, so that the radiation scanning imaging device performs radiation scanning inspection on an object to be inspected passing through the inspection channel from the entrance to the exit.

公开(公告)号：US20210364455A1

公开(公告)日：2021-11-25

申请号：US17255968

申请日：2020-01-03

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED ,  NUCTECH (BEIJING) COMPANY LIMITED

Inventor： Jianmin LI ,  Li ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Hao YU ,  Shangmin SUN ,  Bicheng LIU ,  Weizhen WANG ,  Dongyu WANG ,  Yuan MA ,  Yu HU ,  Chunguang ZONG

IPC: G01N23/20008 ,  G01N23/203

Abstract: The present disclosure provides a back scattering inspection system and a back scattering inspection method. The back scattering inspection system includes a frame and a back scattering inspection device. The rack includes a track arranged vertically or obliquely relative to the ground, and a space enclosed by the track forms an inspection channel; and the back scattering inspection device includes a back scattering ray emitting device and a back scattering detector, and the back scattering inspection device is movably disposed on the track for inspecting an inspected object passing through the inspection channel. The back scattering inspection system can perform back scattering inspection on a plurality of surfaces of the inspected object.

公开(公告)号：US20190204242A1

公开(公告)日：2019-07-04

申请号：US16234621

申请日：2018-12-28

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Xiulin NI ,  Jianmin LI ,  Haitian TAN ,  Yulan LI ,  Weifeng YU ,  Yuanjing LI ,  Hejun ZHOU ,  Zhiqiang CHEN ,  Chunguang ZONG ,  Li ZHANG

IPC: G01N23/046 ,  G01V5/00

CPC classification number: G01N23/046 ,  G01N2223/401 ,  G01V5/005

Abstract: The present disclosure relates to the technical field of CT detection, in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure includes a scanning device and an imaging device, wherein the scanning device having a radioactive source device and a detection device is configured to rotate at a non-uniform speed in at least partial process of scanning an object to be detected; and the imaging device generates a CT image based on effective detection data, wherein the effective detection data refer to data acquired each time the detection device rotates by a preset angle. In the present disclosure, the imaging device of the CT inspection system generates a CT image based on data acquired each time the detection device rotates by a preset angle, which, compared with traditional image collection solutions, can effectively reduce image deformation and improve accuracy of detection results.

公开(公告)号：US20220082723A1

公开(公告)日：2022-03-17

申请号：US17420132

申请日：2020-01-03

Applicant: NUCTECH COMPANY LIMITED ,  NUCTECH (BEIJING) COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Quanwei SONG ,  Xuping FAN ,  Junping SHI ,  Yuan HE ,  Hui MENG ,  Chunguang ZONG ,  Yu HU ,  Shangmin SUN ,  Jinguo CAO

IPC: G01V5/00

Abstract: The present disclosure relates to a security inspection device and a transfer method, and the security inspection device includes an arm frame, provided with detectors, and configured to form an inspection channel, a first compartment, internally provided with a radiation source and connected with the arm frame, a protection wall, connected with the first compartment or the arm frame, and configured to perform radiation protection for an object to be protected, and a tire, configured to enable the security inspection device to move relative to the ground, and the arm frame, the first compartment and the protection wall are set to be transported together in a connected state.

公开(公告)号：US20210270991A1

公开(公告)日：2021-09-02

申请号：US17255394

申请日：2020-01-06

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH (BEIJING) COMPANY LIMITED ,  NUCTECH COMPANY LIMITED

Inventor： Yanwei XU ,  Weifeng YU ,  Yu HU ,  Chunguang ZONG ,  Shangmin SUN

IPC: G01V5/00 ,  G01S17/894 ,  G06K9/78

Abstract: The present disclosure relates to a security scanning inspection system and method. The security scanning inspection system comprises a detector, a scanning device and a controller, wherein the detector is configured to detect a protective attribute of an object to be inspected; the scanning device is movably arranged and the scanning device is configured to emit a scanning ray during movement to perform a security scanning inspection on the object to be inspected, the scanning device comprising at least two working modes, wherein a dose of a scanning ray in each working mode is different from a dose of a scanning ray in any other working modes; and the controller configured to select a working mode of the scanning device according to the protective attribute of the object to be inspected detected by the detector.

公开(公告)号：US20190204243A1

公开(公告)日：2019-07-04

申请号：US16234625

申请日：2018-12-28

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun KANG ,  Jianmin LI ,  Xiulin NI ,  Yulan LI ,  Yuanjing LI ,  Zhiqiang CHEN ,  Li ZHANG ,  Liang LI ,  Xiang ZOU ,  Weifeng YU ,  Hejun ZHOU ,  Chunguang ZONG

IPC: G01N23/046

CPC classification number: G01N23/046 ,  G01N2223/33 ,  G01V5/005

Abstract: The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.

公开(公告)号：US20170023697A1

公开(公告)日：2017-01-26

申请号：US15217787

申请日：2016-07-22

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Ziran ZHAO ,  Yaohong LIU ,  Juan ZHENG ,  Jianping GU ,  Chunguang ZONG

IPC: G01V5/00

CPC classification number: G01V5/0041 ,  G01N23/04 ,  G01N23/046 ,  G01N23/06 ,  G01N23/083 ,  G01N23/087 ,  G01N23/10 ,  G01V5/0016 ,  G01V5/005 ,  G01V5/12

Abstract: Disclosed is a method and device for estimating weight of an object to be inspected in an inspection system. An effective atomic number and a high-energy gray value of the dual-energy corresponding to each pixel of the object to be inspected are obtained by a dual-energy radiation scanning. A mass-thickness value for a corresponding pixel is obtained from a pre-created mass-thickness attenuation curve by utilizing the effective atomic numbers and the high-energy gray value of the dual-energy for respective pixels. Weight information for at least a part of the object to be inspected is calculated by multiplying the mass-thickness value by the area of the pixel. Such a method may accurately calculate the weight of the object to be inspected and save the cost for a conventional weighing hardware.

Abstract translation: 公开了一种用于在检查系统中估计被检查物体的重量的方法和装置。 通过双能量辐射扫描获得与待检测对象的每个像素相对应的双能量的有效原子序数和高能灰度值。 通过利用有效原子序数和相应像素的双能量的高能量灰度值，从预先创建的质量厚度衰减曲线获得相应像素的质量厚度值。 通过将质量厚度值乘以像素的面积来计算待检查对象的至少一部分的重量信息。 这种方法可以精确地计算待检查物体的重量并节省常规称重硬件的成本。

公开(公告)号：US20220099858A1

公开(公告)日：2022-03-31

申请号：US17420676

申请日：2020-01-06

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY ,  NUCTECH (BEIJING) COMPANY LIMITED

Inventor： Chunguang ZONG ,  Quanwei SONG ,  Kejin GAO ,  Shangmin SUN ,  Junping SHI ,  Yuan HE ,  Yu HU ,  Feng WANG ,  Jinguo CAO

IPC: G01V5/00 ,  G01N23/10

Abstract: An inspection device is provided, includes a first vehicle body, a radiation source, arranged in the first vehicle body, a second vehicle body, a protective wall, arranged on the second vehicle body, a boom, and detectors, arranged on the boom, and the boom is rotatably connected to the first vehicle body and the second vehicle body, forms an inspection passage together with the first vehicle body and the second vehicle body. The inspection device can improve the adaptability.

公开(公告)号：US20220099601A1

公开(公告)日：2022-03-31

申请号：US17420681

申请日：2020-01-03

Applicant: NUCTECH (BEIJING) COMPANY LIMITED ,  NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Jianmin LI ,  Shangmin SUN ,  Chunguang ZONG ,  Yu HU ,  Quanwei SONG ,  Hejun ZHOU ,  Weifeng YU ,  Jinguo CAO ,  Bing FU

IPC: G01N23/10 ,  G01N23/04 ,  G01N23/083

Abstract: The present disclosure provides a radiation inspection apparatus and a radiation inspection method. The radiation inspection apparatus includes: a radiation inspection device comprising a ray source and a detector that cooperates with the ray source to perform scanning inspection on an object to be inspected, the radiation inspection device having an inspection channel for the object to be inspected to pass through when scanning inspection is performed thereon; and traveling wheels provided at the bottom of the radiation inspection device to enable the radiation inspection apparatus to travel in an extension direction of the inspection channel, and the traveling wheels are configured to rotate 90° to enable the radiation inspection apparatus to travel in a direction perpendicular to the extension direction of the inspection channel.