公开(公告)号：EP3188194B1

公开(公告)日：2020-09-02

申请号：EP16191080.7

申请日：2016-09-28

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： KANG, Kejun ,  LI, Ying ,  LI, Jianmin ,  LI, Yulan ,  ZHU, Guoping

IPC: G21K1/04 ,  G01V5/00

公开(公告)号：EP2983012B1

公开(公告)日：2018-08-08

申请号：EP14746344.2

申请日：2014-01-17

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： KANG, Kejun ,  LI, Jianmin ,  LI, Ying ,  LI, Yuanjing ,  YIN, Wei ,  ZHENG, Juan ,  ZENG, Lei

IPC: G01V5/00 ,  G01N23/10

CPC classification number: G01V5/0041 ,  G01V5/0025

Abstract: The disclosure provides a multi-power multi-dosage accelerator. The multi-power multi-dosage accelerator comprises an electron gun configured to provide a first voltage of the electron gun and a second voltage of the electron gun, and an accelerating tube configured to generate a first X-ray having a first dosage and first power according to the first voltage of the electron gun and generate a second X-ray having a second dosage and second power according to the second voltage of the electron gun, wherein the first dosage is a dosage which can be accepted by human bodies and is much less than the second dosage, the first X-ray is used for inspecting a first area where a person is located, and the second X-ray is used for inspecting a second area where goods are located.

公开(公告)号：EP3188194A3

公开(公告)日：2017-11-15

申请号：EP16191080.7

申请日：2016-09-28

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： KANG, Kejun ,  LI, Ying ,  LI, Jianmin ,  LI, Yulan ,  ZHU, Guoping

IPC: G21K1/04 ,  G01V5/00

Abstract: A collimator and an inspection system having the collimator are disclosed. The collimator includes: a collimator body including a first part and a second part; a collimating slit formed between the first part and the second part and having a first end and a second end in a longitudinal direction thereof; and a shielding member which is movable relative to the collimator body such that both a beam divergent angle and an elevation angle of a ray beam propagating through the collimating slit are varied. An inspection system and an inspection method for scanning a vehicle are further disclosed.

公开(公告)号：EP3188194A2

公开(公告)日：2017-07-05

申请号：EP16191080.7

申请日：2016-09-28

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： KANG, Kejun ,  LI, Ying ,  LI, Jianmin ,  LI, Yulan ,  ZHU, Guoping

IPC: G21K1/04

Abstract: A collimator and an inspection system having the collimator are disclosed. The collimator includes: a collimator body including a first part and a second part; a collimating slit formed between the first part and the second part and having a first end and a second end in a longitudinal direction thereof; and a shielding member which is movable relative to the collimator body such that both a beam divergent angle and an elevation angle of a ray beam propagating through the collimating slit are varied. An inspection system and an inspection method for scanning a vehicle are further disclosed.

Abstract translation: 公开了准直器和具有该准直器的检查系统。 该准直仪包括：准直仪主体，其包括第一部分和第二部分; 在第一部分和第二部分之间形成并在其纵向上具有第一端和第二端的准直狭缝; 以及相对于准直仪本体可移动的屏蔽构件，使得通过准直狭缝传播的光束发散角和射线束的仰角都变化。 还公开了一种用于扫描车辆的检查系统和检查方法。

公开(公告)号：EP2940457A1

公开(公告)日：2015-11-04

申请号：EP13868705.8

申请日：2013-11-21

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： KANG, Kejun ,  TANG, Chuanxiang ,  ZHAO, Ziran ,  ZHANG, Zhe

IPC: G01N23/04 ,  H05G1/46 ,  A61B6/03

CPC classification number: H05G1/10 ,  A61B6/032 ,  A61B6/40 ,  A61B6/4064 ,  G01N23/046 ,  G01N2223/308 ,  G01N2223/419 ,  H01J35/06 ,  H01J35/08 ,  H01J2235/086

Abstract: CT devices and methods thereof are disclosed. The CT device comprises a circular electron beam emission array including a plurality of electron beam emission units that are distributed uniformly along a circle, wherein each electron beam emission unit emits electron beams that are substantially parallel to an axis of the circular electron beam emission array in sequence under the control of a control signal; a circular reflection target which is disposed to be coaxial with the circular electron beam emission array, wherein the electron beams bombard the circular reflection target to generate X-rays that intersect the axis of the circular electron beam emission array; and a circular detector array which is disposed to be coaxial with the circular reflection target and configured to include a plurality of detection units which receive the X-rays after they have passed through an object to be detected.

Abstract translation: 公开了CT装置及其方法。 该CT装置包括：圆形电子束发射阵列，其包括沿着圆均匀分布的多个电子束发射单元，其中每个电子束发射单元发射基本上平行于圆形电子束发射阵列的轴的电子束; 序列在控制信号的控制下; 圆形反射靶，与圆形电子束发射阵列同轴设置，其中电子束轰击圆形反射靶，以产生与圆形电子束发射阵列的轴相交的X射线; 以及圆形的检测器阵列，该圆形的检测器阵列配置成与所述圆形的反射对象物同轴，并构成为具有多个检测单元，所述多个检测单元在通过被检测体后接收所述X射线。

公开(公告)号：EP2256477B1

公开(公告)日：2012-08-01

申请号：EP09717946.9

申请日：2009-02-16

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： KANG, Kejun ,  CHEN, Zhiqiang ,  ZHANG, Li ,  WANG, Yingxin ,  ZHAO, Ziran ,  LI, Yuanjing ,  LIU, Yinong ,  HUANG, Zhifeng ,  XING, Yuxiang

IPC: G01N21/35

CPC classification number: G01N21/3581

Abstract: A phase contrast imaging method comprises: using a Terahertz radiation to radiate an object in order to interact with the object; making the Terahertz radiation after interacting with the object radiating a diffraction grating; shifting the diffraction grating along the diffraction grating wave vector direction in order to measure the light intensity distribution of the Terahertz radiation after interacting with the object and the grating in the diffraction field for the different grating positions; and recovering a phase contrast image of the object based on the light intensity distribution. Besides, a phase contrast imaging apparatus comprises: a Terahertz radiation emitter(1), which produces the Terahertz radiation to radiate an object in order to interact with the object; a diffraction grating(3), which is radiated by the Terahertz radiation after interacting with the object; a Terahertz radiation detector(4), which measures the light intensity distribution of the Terahertz radiation after interacting with the object and the grating in the diffraction field for the different grating positions; a data collecting and processing system(6), which recovers a phase contrast image of the object based on the light intensity distribution.

公开(公告)号：EP2009428A3

公开(公告)日：2010-01-27

申请号：EP08153187.3

申请日：2008-03-22

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： KANG, Kejun ,  CHEN, Zhiqiang ,  HU, Haifeng ,  LI, Yuanjing ,  ZHANG, Li ,  LIU, Yinong ,  WANG, Xuewu ,  QIU, Lijun ,  ZHANG, Hong

IPC: G01N23/10 ,  G01V5/00

CPC classification number: G01N23/046 ,  G01N2223/419

Abstract: Disclosed are a method and a device for inspection of drugs concealed in liquid articles without opening the outer packages. The method comprises the steps of: emitting radiation beams to transmit through the liquid article; receiving the radiation beams transmitted through the liquid article to get multi-angle projection data; inversely operating the multi-angle projection data based on the uniformity of the liquid article to obtain an attribute value of the inspected liquid article; retrieving a reference attribute value in a pre-created database by using the identification information of the liquid article as an index, and calculating a difference between the calculated attribute value and the reference attribute value; and determining whether the difference is larger than a predefined threshold value; wherein it is concluded that there are drugs concealed in the liquid article when the difference is determined to be larger than the predefined threshold value.

公开(公告)号：EP3506209A1

公开(公告)日：2019-07-03

申请号：EP18215939.2

申请日：2018-12-31

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： XING, Yuxiang ,  LIANG, Kaichao ,  SHEN, Le ,  ZHANG, Li ,  YANG, Hongkai ,  KANG, Kejun ,  CHEN, Zhiqing ,  LI, Jianmin ,  LIU, Yinong

IPC: G06T11/00

Abstract: An image processing method, an image processing device and a storage medium are disclosed. The image processing method includes processing input projection domain data using a convolutional neural network. The neural network includes a projection domain network, an analytical reconstruction network layer and an image domain network. The projection domain network may process the projection domain data to recover possible missing data, thereby improving quality of the projection. The image domain network processes a reconstructed image to obtain an estimated image. The image domain network is adjusted by using an a priori model cost function based on the estimated image, and back propagation of a gradient is performed through the analytical reconstruction network layer to adjust parameters of a convolutional kernel of the projection domain network. A projection operation is performed on the estimated image by using a system projection matrix of the CT scanning system to obtain a projection result.

公开(公告)号：EP3457364A1

公开(公告)日：2019-03-20

申请号：EP18192440.8

申请日：2018-09-04

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： KANG, Kejun ,  CHEN, Zhiqiang ,  MIAO, Qitian ,  LI, Yuanjing ,  WU, Xianghao ,  LIU, Shiguo

IPC: G07C9/00

Abstract: The present disclosure provides an electronic custom lock device (300) and a method (400) for conducting an inspection of cargo boxes. The electronic custom lock device (300) comprises: a first communication unit (310), configured to communicate with a terminal device through first communication; a memory (320), configured to store an initial inspection image; and a processor (330), configured to control the first communication unit (310) to transmit the initial inspection image to an inspecting terminal device when the electronic custom lock device (300) is connected to the inspecting terminal device through the first communication unit (310). The first communication is one of Bluetooth communication, near field communication, and radio frequency identification communication.

公开(公告)号：EP3040742A1

公开(公告)日：2016-07-06

申请号：EP15200666.4

申请日：2015-12-17

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： KANG, Kejun ,  YANG, Xuejing ,  SUN, Shangmin ,  HU, Yu ,  GU, Jingyu ,  YU, Weifeng ,  LI, Ke ,  LIU, Lei ,  YU, Youai

IPC: G01V5/00

Abstract: The present disclosure provides a vehicle-carried quick inspection system (11). The vehicle-carried quick inspection system may comprise an X-ray source (12) and a detector (13), the X-ray source and the detector being arranged to form an inspection passage. The vehicle-carried quick inspection system further comprises a controller (18) configured to control the X-ray source so that X-ray irradiation dose is extremely low when the driver's cab of the inspected vehicle passes through an X-ray beam, and control the X-ray source so that the irradiation dose of the X-ray source becomes a working dose when the other subsequent portions of the inspected vehicle pass through the X-ray beam. With the vehicle-carried quick inspection system of the present disclosure, a mobile and fully automated security inspection system is obtained and quick inspection can be achieved, while protecting the driver from being damaged from X-ray irradiation. Compared to fixed inspection systems or mobile inspection systems in prior arts, the vehicle-carried quick inspection system of the present disclosure can provide more convenient and quicker inspection.

Abstract translation: 本公开提供了一种车载快速检查系统（11）。 车载快速检查系统可以包括X射线源（12）和检测器（13），X射线源和检测器被布置成形成检查通道。 车载快速检查系统还包括控制器（18），其被配置为控制X射线源，使得当被检查车辆的驾驶室通过X射线束时，X射线照射剂量非常低，并且控制 X射线源使得当被检查车辆的其他后续部分通过X射线束时，X射线源的照射剂量变为工作剂量。 通过本公开的车载快速检查系统，可以获得移动和全自动安全检查系统，并且可以在保护驾驶员免受X射线照射的损害的同时快速检查。 与现有技术中的固定检查系统或移动检查系统相比，本公开的车载快速检查系统可以提供更方便和更快速的检查。