公开(公告)号：US20200253033A1

公开(公告)日：2020-08-06

申请号：US16727639

申请日：2019-12-26

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED ,  NuRay Technology Co., Ltd

Inventor： Yuanjing LI ,  Yaohong LIU ,  Huaping TANG ,  Jinsheng LIU ,  Xiying LIU ,  Zhanfeng QIN ,  Wei JIA ,  Jinsong PAN

IPC: H05G1/32 ,  H02M3/28 ,  H02M7/10 ,  H05G1/20

Abstract: Embodiments of the present disclosure disclose a multi-output high-voltage power supply including a channel selection circuit (103) including a plurality of switches; and a high-voltage power supply module (101) connected to the channel selection circuit (103), wherein the high-voltage power supply module (101) includes a fine adjusting power supply component (110) and a plurality of coarse adjusting power supply components (120-1 to 120-N) connected in series, wherein one high-voltage output terminal of the high-voltage power supply module (101) is connected to a common terminal of the channel selection circuit (103), and the other high-voltage output terminal of the high-voltage power supply module (101) is grounded through a current sampling resistor.

公开(公告)号：US20190198285A1

公开(公告)日：2019-06-27

申请号：US16231672

申请日：2018-12-24

Applicant: Nuctech Company Limited

Inventor： Yaohong LIU ,  Liang ZHANG ,  Xiaotong ZHANG ,  Feng GAO

IPC: H01J37/09 ,  H01J37/32 ,  H01J37/065 ,  G01N33/24 ,  G01N33/20

Abstract: The present application discloses an accelerator system for mineral component analysis and system and method for mineral component analysis. The accelerator system includes an electron gun for generating an electron beam; an accelerating tube for accelerating an electron beam emitted by the electron gun to a predetermined energy; a composite target for generating a radioactive ray on the composite target after receiving bombardment of the electron beam; and a shielding mechanism for shielding the radioactive ray.

公开(公告)号：US20170329038A1

公开(公告)日：2017-11-16

申请号：US15411348

申请日：2017-01-20

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： 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: G01V5/00

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

Abstract: 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：US20210404988A1

公开(公告)日：2021-12-30

申请号：US16626767

申请日：2019-06-12

Applicant: NUCTECH COMPANY LIMITED

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Jianmin LI ,  Yinong LIU ,  Yaohong LIU ,  Lili YAN ,  Biao CAO ,  Weiping ZHU ,  Ge LI ,  Qiufeng MA ,  Qi MAO ,  Nan BAI

IPC: G01N27/622 ,  G01N1/22

Abstract: There are provided an ion mobility spectrometer and a sniffer. The ion mobility spectrometer includes: an ion migration tube; a sampling gas path having a sampling device configured to temporarily store a sample gas collected by a sampling head in a sampling pipe; a sample introduction gas path having two ends in communication with the gas inlet and outlet of the ion migration tube respectively, and configured to introduce a carrier gas within the ion migration tube into the sampling pipe and to carry a sample gas temporarily stored in the sampling pipe into the ion migration tube; and a valve assembly configured to only allow gas to flow from the sampling device to the sampling pipe in a sampling state, and to only allow gas to flow from the ion migration tube through the sampling pipe back to the ion migration tube in a sample introduction state.

公开(公告)号：US20210048376A1

公开(公告)日：2021-02-18

申请号：US16989123

申请日：2020-08-10

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Jianmin LI ,  Shangmin SUN ,  Yaohong LIU ,  Weiping ZHU ,  Qiufeng MA ,  Ge LI ,  Biao CAO ,  Zheng LIANG ,  Ying LI ,  Yu HU

IPC: G01N1/24 ,  G01N27/62

Abstract: A sampling probe, an automatic sampling device, and a container detection system are provided. The sampling probe includes: a mounting base; a housing mounted on the mounting base, a first accommodation chamber having an opening being defined in the housing, and an exhaust hole in communication with the first accommodation chamber and outside of the housing being formed in the housing; a coupling portion formed on an outer edge of the opening of the first accommodation chamber and formed to be hermetically coupled with an air outlet of a container; and a suction device mounted on the housing and configured to suck gas in the container into the first accommodation chamber through the air outlet. The sampling probe may collect the odor of toxic and harmful gases/hazardous chemicals inside the container at the air outlet of the container, without destroying the overall structure of the container.

公开(公告)号：US20180195979A1

公开(公告)日：2018-07-12

申请号：US15865520

申请日：2018-01-09

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Qiang LI ,  Jianping GU ,  Bin XU ,  Yaohong LIU ,  Ziran ZHAO

IPC: G01N23/046 ,  G01N23/041 ,  G01V5/00

Abstract: A method for inspecting a container and an inspection device are disclosed. X-ray scanning is performed on the inspected container to obtain a scanned image. The scanned image is processed to obtain a region of interest. Features of texture units included in the region of interest are calculated. Local descriptions of the texture units are formed based on the features of the texture units. Distinction of each local point is calculated from a local description of each of the texture units so as to obtain a local distinct map of the region of interest. It is determined whether there is an article which is secretly carried in the inspected container using the local distinct map.

公开(公告)号：US20180178415A1

公开(公告)日：2018-06-28

申请号：US15815819

申请日：2017-11-17

Applicant: Nuctech Company Limited

Inventor： Yanchun WANG ,  Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Yinong LIU ,  Yaohong LIU ,  Nan BAI

IPC: B29C33/00 ,  G01T1/20 ,  C04B35/50

CPC classification number: B29C33/0033 ,  B22F3/14 ,  B28B3/025 ,  B30B11/002 ,  B30B15/026 ,  C04B35/50 ,  C04B35/5156 ,  C04B35/547 ,  C04B35/645 ,  C04B2111/807 ,  C04B2235/3224 ,  C04B2235/3895 ,  C04B2235/94 ,  G01T1/20

Abstract: A mold and a method of manufacturing GOS ceramic scintillator by using the mold are provided. The mold comprises: a female outer sleeve having a cavity disposed inside; a plurality of female blocks disposed inside the cavity, the plurality of female blocks being put together to form a composite structure having a vertical through hole; and a male upper pressing head and a male lower pressing head, wherein each of the male upper pressing head and the male lower pressing head has a shape consistent with that of the vertical through hole. The disclosure may reduce defects of the related art in hot-pressing-sintering such as a mold has a short retirement period and a high material waste, significantly reduce the cost for production of the GOS ceramic scintillator, and significantly improve a process economy.

公开(公告)号：US20170213331A1

公开(公告)日：2017-07-27

申请号：US15409738

申请日：2017-01-19

Applicant: Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Ziran ZHAO ,  Yaohong LIU ,  Jianping GU ,  Zhiming WANG

IPC: G06T7/00 ,  G06K9/62 ,  G06T11/00 ,  G06K9/66 ,  G06T7/11 ,  G06T3/00

CPC classification number: G06T7/0002 ,  G06K9/6245 ,  G06K9/6298 ,  G06K2009/4695 ,  G06T3/0056 ,  G06T5/002 ,  G06T2207/10116 ,  G06T2207/20021 ,  G06T2207/20052 ,  G06T2207/20076 ,  G06T2207/20081

Abstract: A method of evaluating an image quality for an imaging system and the imaging system are provided. The method may comprise: acquiring an image to be evaluated which is generated by the imaging system; extracting a plurality of sub-images from the image; obtaining a coefficient vector indicating a degree of sparsity by applying a sparse decomposition on the plurality of sub-images based on a pre-set redundant sparse representation dictionary; and performing a linear transformation on the coefficient vector so as to obtain an evaluation value for the image quality. The sparse dictionary is learned by only using a few high quality perspective images, and then the image quality is evaluated based on the sparse degree of the image which is obtained by using the sparse dictionary, thereby achieving a convenient and rapid no-reference image quality evaluation.

公开(公告)号：US20170068003A1

公开(公告)日：2017-03-09

申请号：US15258209

申请日：2016-09-07

Applicant: Nuctech Company Limited ,  TSINGHUA UNIVERSITY

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Yinong LIU ,  Yaohong LIU ,  Xiang ZOU ,  Huishao HE ,  Shuwei LI ,  Jianping CHANG ,  Wenjian ZHANG

IPC: G01T7/00 ,  G01J1/02

CPC classification number: G01T7/00 ,  G01J1/0271 ,  G01J2001/0276

Abstract: The invention discloses a safety inspection detector and a goods safety inspection system. The safety inspection detector at least comprises a circuit board, a first housing, a second housing, a detection module and a connecting interface. The detection module and the connecting interface are mounted on the circuit board. The first housing is pressed and connected to a first surface of the circuit board, and the second housing is pressed and connected to a second surface of the circuit board. The first housing and the second housing can hermetically wrap the detection module and electronic devices on the circuit board, but bypass the connecting interface to realize leading-out and connection with related interconnected cables by utilizing the connecting interface. The housings can be used for sealing and protecting sensitive electronic devices in the detector, thus being moisture proof and preventing interference.

Abstract translation: 本发明公开了一种安全检查检测器和货物安全检查系统。 安全检查检测器至少包括电路板，第一壳体，第二壳体，检测模块和连接接口。 检测模块和连接接口安装在电路板上。 第一壳体被按压并连接到电路板的第一表面，并且第二壳体被按压并连接到电路板的第二表面。 第一壳体和第二壳体可以将检测模块和电子设备封装在电路板上，但绕过连接接口，通过利用连接接口实现与相关互连电缆的导出和连接。 这些外壳可用于密封和保护检测器中敏感的电子设备，从而防潮并防止干扰。

公开(公告)号：US20160258884A1

公开(公告)日：2016-09-08

申请号：US14399566

申请日：2014-07-31

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun KANG ,  Jianmin LI ,  Jingyu GU ,  Yuanjing LI ,  Yulan LI ,  Yaohong LIU ,  Zhen TAN ,  Yucheng WU ,  Weizhen WANG

IPC: G01N23/04

CPC classification number: G01V5/0066 ,  B64F5/60 ,  G01N23/04 ,  G01N23/10 ,  G01N2223/631 ,  G01V5/0016 ,  H01J37/023 ,  H01L27/14618

Abstract: The present disclosure provides a system and method for inspecting an aircraft. A ray source and a detector locate at above and below of a fuselage of an aircraft, respectively. The ray source emits a beam of rays, which pass through the aircraft to be detected. The detector receives and converts the beam of rays that pass through the aircraft to an output signal, and generates a vertical transmission image in real time.

Abstract translation: 本公开提供了一种用于检查飞行器的系统和方法。 射线源和探测器分别位于飞机机身的上方和下方。 射线源发出一束通过飞机的射线，以便被检测。 检测器将通过飞机的射线束接收并转换成输出信号，并实时生成垂直透射图像。