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公开(公告)号：EP4501475A1
公开(公告)日：2025-02-05
申请号：EP23777793.3
申请日：2023-03-10
Applicant: NUCTECH COMPANY LIMITED
Inventor： LI, Yuanjing , SUN, Shangmin , ZONG, Chunguang , LIU, Bicheng , WANG, Weizhen , LIU, Lei , JIN, Qingxiu , TAN, Chengjun
Abstract: The present disclosure provides a mineral dry separation apparatus, including: a feeding system, a distribution device, an identification device and an actuator. The feeding system is located upstream of the distribution device and is configured to supply a mineral raw material to the distribution device, the identification device includes a pulsed X-ray source located above the distribution device and an X-ray detector located below the distribution device, the identification device is configured to identify a mineral raw material information, and the actuator is configured to separate the mineral raw material according to the mineral raw material information. By using the pulsed X-ray source, the mineral dry separation apparatus in the present disclosure may image clearly and correct an afterglow in the detector, so that detection data is more accurate, a separation accuracy and a processing ability of the apparatus may be improved, and a good separation effect may be ensured.
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公开(公告)号：EP4459334A1
公开(公告)日：2024-11-06
申请号：EP22914868.9
申请日：2022-12-28
Applicant: Nuctech Company Limited
Inventor： ZONG, Chunguang , YU, Hao , SONG, Quanwei , LIU, Bicheng , YIN, Wei , WANG, Weizhen , SUN, Shangmin , HU, Yu
IPC: G01V5/00 , G01N23/046 , A61B6/03
Abstract: The present disclosure relates to a scanning inspection device, comprises a first rotating frame (1), a first drive device, a ray source (2), a detector (3), a cooling device for cooling the ray source (2), and a second drive device, wherein the center of the first rotating frame (1) is provided with a conveying channel for passage of an object to be inspected (6); the first drive device in drive connection with the first rotating frame (1) to drive the first rotating frame (1) to rotate, wherein the ray source (2), the detector (3), and the cooling device for cooling the ray source (2) are each mounted on the first rotating frame (1) and rotate with the first rotating frame (1); and a second drive device configured to drive the cooling device to rotate toward a direction opposite to a rotation direction of the first rotating frame (1), so that the cooling device is maintained in a fixed attitude during rotation with the first rotating frame
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公开(公告)号：EP4459332A1
公开(公告)日：2024-11-06
申请号：EP22914540.4
申请日：2022-12-23
Applicant: Nuctech Company Limited
Inventor： CHEN, Zhiqiang , LI, Yuanjing , SUN, Shangmin , ZONG, Chunguang , NI, Xiulin , ZOU, Xiang , YIN, Wei , YU, Weifeng
Abstract: Provided is a multi-ray source inspection apparatus, including: a first inspection device (10) configured to acquire a two-dimensional first transmission image of an inspected object and a second inspection device (20) configured to acquire a second transmission image of the inspected object including three-dimensional information. A first radiation beam and a second radiation beam are emitted in a time-sharing manner, and the two-dimensional first transmission image and the second transmission image including the three-dimensional information are respectively acquired after the inspected object passes an inspection channel once. An inspection method using multiple ray sources is further provided.
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公开(公告)号：EP4459270A1
公开(公告)日：2024-11-06
申请号：EP22914864.8
申请日：2022-12-28
Applicant: Nuctech Company Limited
Inventor： WANG, Qiangqiang , SHI, Junping , HE, Yuan , LI, Hongqi , MENG, Hui
IPC: G01N23/04 , G01N23/046
Abstract: The present disclosure provides a radiation inspection system, comprising: a radiation imaging device, which includes at least one radiation source and at least one detector module, has a CT inspection mode and a DR inspection mode, and is configured to perform radiation inspection on an object to be inspected passing through an inspection channel; a conveying device, which includes a conveying device main body, and a primary-secondary motor in drive connection with the conveying device main body to drive the conveying device main body to move along the inspection channel, the primary-secondary motor including a main motor, a sub-motor, and a speed reducer; and a controller in signal connection with the radiation imaging device and the primary-secondary motor, the controller being configured such that when the radiation imaging device is in the CT inspection mode, the conveying device main body is in drive connection with the sub-motor, and in the DR inspection mode, the conveying device main body is in drive connection with the main motor. The radiation inspection system can simplify the control of its conveying device and save costs.
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5.发明公开
公开(公告)号：EP4403111A1
公开(公告)日：2024-07-24
申请号：EP22889065.3
申请日：2022-10-11
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： CHEN, Zhiqiang , ZHANG, Li , SUN, Yunda , ZHAO, Zhenhua , JIN, Xin , SHEN, Le , LIANG, Wuyang
IPC: A61B6/03
CPC classification number: G06T11/005 , G01N23/046 , G01N2223/41920130101
Abstract: Provided are a method and a device for controlling an output beam of an X-ray source in an imaging system, a CT imaging system, an electronic apparatus, a storage medium and a program product, which relate to a field of security inspection imaging technology. The method includes: receiving (S210) an encoder signal and an X-ray source output beam signal, and initially synchronizing the encoder signal and the X-ray source output beam signal; recording (S220) a coded value M of the encoder at moment tm, and a coded value N of the encoder at moment tm+1, where each of M, N, and m is an integer; determining (S230) that a duration from the moment tm to the moment tm+1 is an actual output beam time interval T of the X-ray source, when it is determined that a difference value between the coded value M and the coded value N satisfies a preset value a, where a is an integer; determining (S240) a gap time TG in the actual output beam time interval T based on a preset output beam time interval TJ of the imaging system and the actual output beam time interval T; and controlling (S250) the X-ray source not to emit an X-ray beam within the gap time TG. The method solves the problem of sampling image disorder caused by a belt speed fluctuation.
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Patent Agency Ranking
公开(公告)号：EP4400873A1
公开(公告)日：2024-07-17
申请号：EP22866262.3
申请日：2022-07-22
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： ZHANG, Li , SUN, Yunda , JIN, Xin , LIANG, Wuyang , CHANG, Ming , SHEN, Le
Abstract: A radiation protection arrangement, including: a housing (10), the housing (10) including a first port (11) and a second port (12); and a tray (20), the tray (20) having an accommodation space (23). The tray (20) is allowed to pass through a channel (30) within the housing (10). The tray (20) has a first end wall (21), a second end wall (22), and a bottom portion connected between the first end wall (21) and the second end wall (22). A shape of the first end wall (21) and/or a shape of the second end wall (22) are/is configured to fit with an inner wall of the housing (10), so as to block a radiation from leaving the channel (30) from the accommodation space (23) through the second port (12) or the first port (11). Further provided is a security inspection device, including the radiation protection arrangement.
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公开(公告)号：EP4394696A1
公开(公告)日：2024-07-03
申请号：EP22860072.2
申请日：2022-07-08
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： CHEN, Zhiqiang , ZHANG, Li , SUN, Yunda , ZHENG, Juan , WANG, Lu , YANG, Tao , LI, Dong
Abstract: A method and an apparatus of identifying at least one target object for a security inspection CT are provided. The method includes: performing a dimension reduction on three-dimensional CT data to generate a plurality of two-dimensional dimension-reduced views (S10); performing a target identification on a plurality of two-dimensional views to obtain a set of two-dimensional semantic descriptions of the at least one target object, where the plurality of two-dimensional views include the plurality of two-dimensional dimension-reduced views (S20); and performing a dimension increase on the set of two-dimensional semantic descriptions to obtain a three-dimensional recognition result of the at least one target object (S30).
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公开(公告)号：EP4393406A1
公开(公告)日：2024-07-03
申请号：EP22880277.3
申请日：2022-10-10
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： CHEN, Zhiqiang , ZHANG, Li , JIN, Xin , YANG, Hongkai , XU, Xiaofei , ZHAO, Zhenhua , ZHANG, Siyuan , CHEN, Changyu
IPC: A61B6/03
CPC classification number: A61B6/032 , A61B6/4014 , A61B6/54 , G06V2201/0320220101 , G06V2201/1220220101
Abstract: The present disclosure relates to an imaging system and method for radiographic inspection. The imaging system for radiographic inspection includes an inspection area including an imaging area; a first ray source assembly, all the first target spots of which are arranged in a first ray source plane; a first detector assembly, the plurality of first detector units of which are arranged in a detector plane, the detector plane and the first ray source plane are spaced apart from each other in a travelling direction of the object under inspection with a predetermined distance; and a ray source control device, configured such that when the region of interest of the object under inspection is at least partially located in the imaging area, the first ray source assembly emits X-rays simultaneously from at least two first target spots to the imaging area at the same time, wherein among the at least two first target spots of the first ray source assembly that simultaneously emit X-rays to the imaging area, a ray emission range of each first target spot can cover the imaging area, and the first detector crystals corresponding to the ray emission ranges of any two first target spots do not coincide with each other.
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公开(公告)号：EP4369286A1
公开(公告)日：2024-05-15
申请号：EP22836831.2
申请日：2022-07-01
Inventor： CHEN, Zhiqiang , ZHANG, Li , TANG, Hu , SUN, Yunda , LI, Dong , YAN, Dan
IPC: G06T5/00
CPC classification number: G06T7/13 , G06T7/136 , G06T5/94 , G06T2207/2019220130101 , G06T2207/3011220130101 , G06T2207/1002420130101 , G06T2207/1004820130101 , G06T5/50
Abstract: The present disclosure provides for an apparatus and a method for eliminating a shadow, and an apparatus and a method for identifying an empty tray. The apparatus for eliminating a shadow includes: an image acquiring module configured to acquire an image with supplementary lighting and an image without supplementary lighting; an illumination area image acquiring module configured to obtain an illumination area image based on a difference between the image with supplementary lighting and the image without supplementary lighting; an edge detecting module configured to perform an edge detection on the image without supplementary lighting to obtain an edge image; and a shadow line eliminating module configured to eliminate a part corresponding to the illumination area image from the edge image to obtain an actual edge image.
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公开(公告)号：EP4369060A1
公开(公告)日：2024-05-15
申请号：EP22837024.3
申请日：2022-07-07
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： CHEN, Zhiqiang , ZHANG, Li , HUANG, Qingping , ZHOU, Yong , ZHAO, Zhenhua , DING, Hui , JIN, Xin , JI, Chao
IPC: G01V5/00 , G01N23/046
Abstract: Embodiments of the present application provide a ray scanning device, comprising: a conveying apparatus, which transports an object to be detected through a scanning region of the ray scanning device; a ray source, which comprises a plurality of ray source modules, each ray source module comprising at least one ray source point that emits ray beams; and a detector, which is used for detecting rays transmitted through the object during scanning and which comprises a plurality of detector groups.
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