公开(公告)号：EP4369052A1

公开(公告)日：2024-05-15

申请号：EP22836807.2

申请日：2022-07-01

申请人： Nuctech Company Limited

发明人： WANG, Weizhen ,  LIU, Bicheng ,  ZONG, Chunguang ,  SUN, Shangmin

IPC分类号： G01V5/00

摘要： A radiation inspection system includes: a single ray source (10) having a plurality of accelerating tubes (13), wherein the plurality of accelerating tubes (13) respectively generate a plurality of rays having different energies, and beam exit directions of the plurality of accelerating tubes (13) comprise at least two different beam exit directions; a plurality of detectors (30) configured to detect a signal when rays emitted by the single ray source (10) act on the inspected object (40); and a processor (20) in communication connection with the single ray source (10) and configured to respectively control the plurality of accelerating tubes (13). A radiation inspection method is also provided.

公开(公告)号：EP4012462A1

公开(公告)日：2022-06-15

申请号：EP21213476.1

申请日：2021-12-09

申请人： Nuctech Company Limited

发明人： MING, Shenjin ,  CUI, Tongyuan ,  YANG, Yigang ,  SUN, Shangmin ,  ZONG, Chunguang ,  WANG, Dongyu ,  YU, Hao ,  LIU, Bicheng ,  SONG, Quanwei ,  FAN, Xuping ,  WANG, Weizhen ,  HU, Yu

IPC分类号： G01V5/00

摘要： The present disclosure provides an object detecting device, including a neutron source, a detector, a rotating component and a processor. The neutron source is configured to release a neutron to a detected object so that a neutron induced nuclear reaction occurs between the neutron and the detected object and a gamma ray is generated; the detector is configured to receive the gamma ray and analyze the gamma ray so as to obtain a detection signal quantity corresponding to the gamma ray; the rotating component is configured to carry the detected object and rotate the detected object relative to the neutron source and the detector; the processor is configured to: control the rotating component to rotate the detected object from an initial angle to at least M predetermined angles in sequence; acquire at least M detection signal quantities respectively corresponding to the M predetermined angles, where M is an integer greater than or equal to 2; and determine an angle orientation of a suspected target substance in the detected object based on the M detection signal quantities and a preset reference signal quantity. The present disclosure further provides an object detecting method and a computer-readable storage medium.

公开(公告)号：EP3816615A1

公开(公告)日：2021-05-05

申请号：EP19800557.1

申请日：2019-03-21

申请人： Tsinghua University ,  Nuctech Company Limited

发明人： LI, Ying ,  LI, Jianmin ,  ZONG, Chunguang ,  LI, Yuanjing ,  LI, Yulan ,  CHEN, Zhiqiang ,  ZHANG, Li

IPC分类号： G01N23/04

摘要： The disclosure discloses a radiation inspection system and a radiation inspection method using the radiation inspection system. The radiation inspection system has a standard inspection mode and a rapid inspection mode, and comprises a stationary inspection equipment, which comprises a vertical viewing angle inspection device, the vertical viewing angle inspection device outputting a first radiation scanning ray in the standard inspection mode and outputting a second radiation scanning ray in the rapid inspection mode; and a movable inspection equipment, which is movable relative to the stationary inspection equipment and comprises a horizontal viewing angle inspection device, the horizontal viewing angle inspection device moving with the movable inspection equipment along a length direction of a vehicle to be inspected and outputting a third radiation scanning ray in the standard detection mode and being fixed and outputting a fourth radiation inspection ray in the rapid inspection mode, wherein the output energy and/or dose of the third radiation scanning ray is higher than that of the fourth radiation scanning ray. The disclosure can both achieve the penetration capability for radiation inspection of different vehicles and meet the passing rate requirement of the vehicles.

公开(公告)号：EP3722747A3

公开(公告)日：2020-10-21

申请号：EP20162528.2

申请日：2020-03-11

申请人： Nuctech Company Limited ,  Nuctech (Beijing) Company Limited ,  Tsinghua University

发明人： WANG, Yongming ,  TU, Junjie ,  LIU, Bicheng ,  ZHANG, Haoran ,  XU, Yanwei ,  YU, Weifeng ,  HU, Yu ,  ZONG, Chunguang

IPC分类号： G01B15/00 ,  G01B11/24 ,  G01B15/02

摘要： The present disclosure discloses a volume measurement method, a device, a system and a computer-readable storage medium, and relates to the field of radiation. The volume measurement method includes: determining thicknesses of a measured object in each of directions of multiple X-rays emitted from an accelerator target according to measurement results of the X-rays; determining a cross section area of the measured object according to the thicknesses corresponding to each of the X-rays in the cross section of the measured object; and determining a volume of the measured object according to the cross section area. By applying X-ray scanning to volume measurement, information about the type of substance and size information at multiple positions and angles of the measured object can be obtained from the X-ray measurement results, so that the volume of the measured object can be measured more accurately.

公开(公告)号：EP3474292B1

公开(公告)日：2020-09-16

申请号：EP18201432.4

申请日：2018-10-19

申请人： Tsinghua University ,  Nuctech Company Limited

发明人： YANG, Yigang ,  WANG, Dongyu ,  YU, Hao ,  WANG, Weizhen ,  GUAN, Weiqiang ,  YIN, Wei ,  LI, Wei ,  SONG, Quanwei ,  LI, Yulan ,  ZONG, Chunguang ,  LIU, Yaohong ,  LI, Yuanjing ,  CHEN, Zhiqiang ,  ZHANG, Li ,  LI, Jianmin

IPC分类号： G21G4/02 ,  G01N23/222

公开(公告)号：EP3474292A1

公开(公告)日：2019-04-24

申请号：EP18201432.4

申请日：2018-10-19

申请人： Tsinghua University ,  Nuctech Company Limited

发明人： LI, Jianmin ,  WANG, Dongyu ,  YU, Hao ,  WANG, Weizhen ,  GUAN, Weiqiang ,  YIN, Wei ,  LI, Wei ,  SONG, Quanwei ,  LI, Yulan ,  ZONG, Chunguang ,  LIU, Yaohong ,  LI, Yuanjing ,  CHEN, Zhiqiang ,  ZHANG, Li ,  YANG, Yigang

IPC分类号： G21G4/02 ,  G01N23/222

摘要： The present invention discloses a photoneutron source and a neutron inspection system. The photoneutron source comprises: an electron accelerating tube for accelerating an electron beam; an X-ray converting target, wherein the electron beam accelerated by the electron accelerating tube bombards the X-ray converting target to generate X-rays; a photoneutron target, wherein the X-rays enters the photoneutron target to generates photoneutrons; and a neutron modulation housing provided outside the photoneutron target, wherein the neutron modulation housing comprises a neutron collimation port for outputting photoneutrons. The present invention may directly output a desired neutron beam from the neutron collimation port of the photoneutron source.

公开(公告)号：EP3327430A1

公开(公告)日：2018-05-30

申请号：EP16827253.2

申请日：2016-07-21

申请人： Tsinghua University ,  Nuctech Company Limited

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

IPC分类号： G01N23/04 ,  G01V5/00

CPC分类号： G01V5/0041 ,  G01N23/04 ,  G01N23/087

摘要： 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.

公开(公告)号：EP4458481A1

公开(公告)日：2024-11-06

申请号：EP22913653.6

申请日：2022-10-13

申请人： Nuctech Company Limited

发明人： LI, Yuanjing ,  SUN, Shangmin ,  LIU, Bicheng ,  LI, Ying ,  LIU, Lei ,  ZONG, Chunguang ,  WANG, Weizhen ,  HE, Yuan

IPC分类号： B07C5/02 ,  B07C5/34 ,  B07C5/36

摘要： A mineral separation system, including a conveyor belt (21) and at least two imaging devices (22). Each imaging device (22) includes a ray source (221) located above the conveyor belt (21) and a ray detector (222) located below the conveyor belt (21). The ray source (221) and the ray detector (222) of each imaging device (22) are arranged facing each other in a direction perpendicular to the conveyor belt (21). The ray sources (221) are staggered in a length direction of the conveyor belt (21) and a width direction of the conveyor belt (21). Projection regions of ray beams emitted by the ray sources (221) do not overlap with each other. Orthographic projections of the ray beams emitted by the ray sources (221) in the length direction of the conveyor belt (21) have an overlapping portion.

公开(公告)号：EP4369054A1

公开(公告)日：2024-05-15

申请号：EP22836813.0

申请日：2022-07-01

申请人： Nuctech Company Limited

发明人： WANG, Weizhen ,  LIU, Bicheng ,  ZONG, Chunguang ,  SUN, Shangmin

IPC分类号： G01V5/00

摘要： An inspection system comprises: a radiation source (10); a detector (30) configured to detect a signal when radiation emitted by the radiation source (10) acts on the inspected object; and a processor (20) in communication connection with the radiation source (10) and configured to determine at least one periodic radiation combination corresponding to a type of the object according to the type of the object, select periodic radiation combinations respectively corresponding to at least two different portions of the object in the at least one periodic radiation combination, and cause the radiation source (10) to emit radiation to the at least two corresponding different portions in selected periodic radiation combinations during the time that the object is scanned, wherein a periodic radiation combination is a chronological arrangement of at least one radiation pulse output by the radiation source (10) in each scanning period. An inspection method is also provided.

公开(公告)号：EP4369053A1

公开(公告)日：2024-05-15

申请号：EP22836811.4

申请日：2022-07-01

申请人： Nuctech Company Limited

发明人： WANG, Weizhen ,  LIU, Bicheng ,  ZONG, Chunguang ,  SUN, Shangmin

IPC分类号： G01V5/00

摘要： An inspection system includes: a radiation source (10); a detector (30) configured to detect a signal when radiation emitted by the radiation source (10) acts on an inspected object; and a processor (20) in communication connection with the radiation source (10) and configured to select a periodic radiation combination corresponding to a type of the object according to the type of the object, and cause the radiation source (10) to emit radiation to the object in the selected periodic radiation combination during the time that the object is scanned, wherein the periodic radiation combination is a chronological arrangement of a plurality of radiation pulses output by the radiation source (10) in each scanning period, and the plurality of radiation pulses have at least two different radiation energies. The system is capable of improving adaptability and simplifying control. An inspection method is also provided.