公开(公告)号：US20250099045A1

公开(公告)日：2025-03-27

申请号：US18832490

申请日：2023-12-25

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Liang LI ,  Mingzhi HONG ,  Zinan WANG ,  Yongjie XIA ,  Ming Chang

IPC: A61B6/03 ,  A61B6/10

Abstract: The present disclosure provides a CT imaging system and a CT detection device. The CT imaging system includes: a connecting plate, a strong supporting frame, a weak supporting frame, an emitter, a detector, an electrical component and a shielding box. The connecting plate is annular and has a rotating axis. The strong supporting frame is connected to the connecting plate on a side of the connecting plate and includes a first strong supporting frame and a second strong supporting frame distributed at an interval in a circumferential direction of the connecting plate. The weak supporting frame is connected to the connecting plate on a same side of the connecting plate as the strong supporting frame. The emitter is connected to the first strong supporting frame. The detector is connected to the second strong supporting frame. The electrical component is connected to the weak supporting frame. The shielding box is connected to at least one weak supporting frame.

公开(公告)号：US20240288385A1

公开(公告)日：2024-08-29

申请号：US18575224

申请日：2022-07-07

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Li ZHANG ,  Zhiqiang CHEN ,  Qingping HUANG ,  Xin JIN ,  Hui DING ,  Yong ZHOU ,  Bintao WEI ,  Zhenhua ZHAO

IPC: G01N23/04

CPC classification number: G01N23/04 ,  G01N2223/20 ,  G01N2223/308 ,  G01N2223/321

Abstract: A ray scanning apparatus for a luggage conveying system. The apparatus includes: a conveying device for conveying an object under inspection to pass through a scanning area of the ray scanning apparatus; and a plurality of scanning beam planes disposed on a plurality of scanning planes arranging in a conveying direction of the object under inspection, each scanning beam plane includes a ray source module and a detector assembly which are arranged opposite to each other, and the ray source module includes a plurality of ray source points for emitting ray beams, wherein the ray source modules of the plurality of scanning beam planes are arranged on lower, left, and right sides of the scanning area respectively.

公开(公告)号：US20240248048A1

公开(公告)日：2024-07-25

申请号：US18575794

申请日：2022-07-07

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Qingping HUANG ,  Yong ZHOU ,  Zhenhua ZHAO ,  Hui DING ,  Xin JIN ,  Chao JI

IPC: G01N23/046

CPC classification number: G01N23/046 ,  G01N2223/308 ,  G01N2223/3305 ,  G01N2223/3308 ,  G01N2223/401 ,  G01N2223/419 ,  G01N2223/5015

Abstract: A ray scanning apparatus, including: a conveying device; a ray source assembly including a plurality of ray source modules arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area; and a detector assembly including a plurality of detector sets arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area, where the opening of the non-enclosed structure of the ray source assembly is opposite to the opening of the non-enclosed structure of the detector assembly, the plurality of detector sets are fixed in a same plane perpendicular to the conveying direction of the object under inspection, and the plurality of ray source modules of the ray source assembly are arranged in a plurality of different planes perpendicular to the conveying direction of the object under inspection.

公开(公告)号：US20230251399A1

公开(公告)日：2023-08-10

申请号：US18013094

申请日：2021-06-24

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Zhiqiang CHEN ,  Ziran ZHAO ,  Yingkang JIN ,  Xiaoyi HE ,  Li ZHANG ,  Mengjiao ZHAO ,  Zhimin ZHENG ,  Yihai ZHANG ,  Yaning LI ,  Xiaoxiao FENG

IPC: G01V8/00

CPC classification number: G01V8/005

Abstract: Provided is a server of a checking system based on a millimeter wave security inspection device, connected to a security inspection instrument through a switching system, the server includes a memory and a processor, the memory stores instructions, and the instructions, when executed by the processor, cause the processor to: receive a scanned image of an object and an ATR image interpretation result of the object from the security inspection instrument, wherein the ATR image interpretation result is obtained by the security inspection instrument performing an automatic threat recognition (ATR) image interpretation on the scanned image, and perform a manual inspection task on the object and perform an image interpretation task on the scanned image according to a working mode, wherein the working mode indicates whether the checking system is provided with a manual inspection station and an image interpretation station.

公开(公告)号：US20230236150A1

公开(公告)日：2023-07-27

申请号：US17999201

申请日：2021-05-14

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Jianmin LI ,  Weiping ZHU ,  Qiufeng MA ,  Biao CAO ,  Lili YAN ,  Ge LI ,  Nei YANG

IPC: G01N27/622 ,  G01N30/20

CPC classification number: G01N27/622 ,  G01N30/20 ,  G01N2030/025 ,  G01N2030/201

Abstract: A trace detection device including: an ion mobility tube ; a sampling gas path module ; a sample injection gas path module configured to introduce a sample carrier gas containing a sample collected by the sampling gas path module toward the ion mobility tube; and a gas chromatography apparatus capable of pre-separating the sample carrier gas, so as to form a pre-separated sample carrier gas; wherein the sample injection gas path module is further configured to be capable of switching between a first mode and a second mode, in the first mode, the sample injection gas path module introduces the sample carrier gas into the ion mobility tube; and in the second mode, the sample injection gas path module introduces the sample carrier gas into the gas chromatography apparatus to pre-separate the sample carrier gas, and the pre-separated sample carrier gas is introduced into the ion mobility tube.

公开(公告)号：US20210215582A1

公开(公告)日：2021-07-15

申请号：US16314063

申请日：2018-12-10

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Yinong LIU ,  Yaohong LIU ,  Lili YAN ,  Ge LI ,  Qiufeng MA

IPC: G01N1/34 ,  G01N1/44 ,  G01N27/622 ,  G01N1/22

Abstract: Embodiments of the present disclosure provide a gas purifying device and an ion migration spectrometer. The gas purifying device includes a first purificant vessel, a second purificant vessel and a valve communicated between the first purificant vessel and the second purificant vessel. The valve is configured to allow a gas flows from the second purificant vessel to the first purificant vessel in a first state and to permit the gas to flow from the first purificant vessel to the second purificant vessel in a second state.

公开(公告)号：US20190206095A1

公开(公告)日：2019-07-04

申请号：US16235882

申请日：2018-12-28

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

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

IPC: G06T11/00 ,  G06N3/08

CPC classification number: G06T11/003

Abstract: An image processing method, comprising: acquiring, by a CT scanning system, projection data of an object; and processing, by using a convolutional neural network, the projection data, to acquire an estimated image of the object. The convolutional neural network comprises: a projection domain network for processing input projection data to obtain estimated projection data; an analytical reconstruction network layer for performing analytical reconstruction to obtain a reconstructed image; an image domain network for processing the reconstructed image to obtain an estimated image, a projection layer for performing a projection operation by using a system projection matrix of the CT scanning system, to obtain a projection result of the estimated image; and a statistical model layer for determining consistency among the input projection data, the estimated projection data, and the projection result of the estimated image based on a statistical model.

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：US20190193691A1

公开(公告)日：2019-06-27

申请号：US16233398

申请日：2018-12-27

Applicant: TSINGHUA UNIVERSITY ,  Nuctech Company Limited

Inventor： Yuan HE ,  Jianmin LI ,  Hongqi LI ,  Yulan LI ,  Qiangqiang WANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Li ZHANG

IPC: B60S13/00

CPC classification number: B60S13/00 ,  B60S5/00 ,  B62D49/02 ,  B62D49/0692

Abstract: A fork-arm lift tractor includes a vehicle body, a supporting plate disposed above the vehicle body, a lifting device for driving the supporting plate to be lifted, a front and rear fork-arm assemblies, a front and rear fork-arm drive assemblies. The front fork-arm assembly includes two front fork-arms rotatably disposed at the supporting plate. The rear fork-arm assembly includes two rear fork-arms rotatably disposed at the supporting plate, and the front and rear fork-arms may be deployed or retracted from both sides of the supporting plate. The front fork-arm driving assembly includes a front transmission part, and a front power device disposed at the supporting plate and may drive the front transmission part to move horizontally linearly so as to rotate the two front fork-arms. The rear fork-arm driving assembly has almost the same structure of the front fork-arm driving assembly and is used to rotate the two rear fork-arms.

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.