公开(公告)号：US20180182606A1

公开(公告)日：2018-06-28

申请号：US15832193

申请日：2017-12-05

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Yanchun Wang ,  Ziran Zhao ,  Xianghua Li ,  Qiufeng Ma ,  Ge Li ,  Biao Cao ,  Qi Mao ,  Xiang Zou

IPC: H01J49/16 ,  H01J49/02 ,  H01J49/00 ,  G01N27/62

CPC classification number: H01J49/168 ,  G01N27/622 ,  H01J49/0013 ,  H01J49/022

Abstract: The present disclosure provides an ion mobility spectrometer, which comprises: a power supply circuit, configured to provide a power supply voltage; a corona discharge configured to generate ions to be subjected to measurement, through corona discharge; an ion migration circuit configured to control migration of the ions; a migration zone structure configured to realize, under control of the ion migration circuit, mobility spectrum measurement of the ions which pass through the migration zone structure; a redundant charge extraction electrode arranged between the corona discharge structure and the migration zone structure, so that the ions which are generated by the corona discharge structure can pass therethrough to reach the migration zone structure; and a redundant charge extraction circuit, wherein the redundant charge extraction electrode is connected to the ground through the redundant charge extraction circuit.

公开(公告)号：US20180156741A1

公开(公告)日：2018-06-07

申请号：US15716921

申请日：2017-09-27

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Kejun Kang ,  Jianping Cheng ,  Zhiqiang Chen ,  Ziran Zhao ,  Junli Li ,  Xuewu Wang ,  Zhi Zeng ,  Ming Zeng ,  Yi Wang ,  Qingjun Zhang ,  Jianping Gu ,  Xi Yi ,  Bicheng Liu ,  Guangming Xu ,  Yongqiang Wang

IPC: G01N23/04 ,  G01N23/08 ,  G01N23/20

CPC classification number: G01N23/04 ,  G01N23/046 ,  G01N23/06 ,  G01N23/20008 ,  G01N2223/304 ,  G01N2223/33 ,  G01N2223/401 ,  G01N2223/419 ,  G01N2223/652 ,  G01V5/0016 ,  G01V5/0025 ,  G01V5/0091

Abstract: Inspection devices and inspection methods are disclosed. The inspection method includes: performing X-ray scanning on an object being inspected so as to generate an image of the object being inspected; dividing the image of the object being inspected to determine at least one region of interest; detecting interaction between a cosmic ray and the region of interest to obtain a detection value; calculating a scattering characteristic value and/or an absorption characteristic value of the cosmic ray in the region of interest based on size information of the region of interest and the detection value; and discriminating a material attribute of the region of interest by means of the scattering characteristic value and/or the absorption characteristic value. With the above technical solutions, inspection accuracy and inspection efficiency may be improved.

公开(公告)号：US09947067B2

公开(公告)日：2018-04-17

申请号：US14753520

申请日：2015-06-29

Applicant: TSINGHUA UNIVERSITY ,  Nuctech Company Limited

Inventor： Zhiqiang Chen ,  Li Zhang ,  Ziran Zhao ,  Xianghao Wu ,  Limin Liu ,  Min Li ,  Xiaoming Song ,  Xinfang Huang ,  Ying Li

IPC: G06F17/30 ,  G06T1/60 ,  G06T1/20

CPC classification number: G06T1/20 ,  G06F17/30861 ,  G06F17/30902 ,  G06T1/60

Abstract: The present disclosure provides a radiation image inspection system based on B/S architecture. The system comprises: at least one client terminal, configured to initiate an image operation request to a Web server, and display an image operation result on a browser of the client terminal upon receiving a response from the Web server; an image processing assembly, configured to query, based on the image operation request from the client terminal and forwarded by the Web server, an image which the client terminal desires to process, perform an operation on an image as requested by the client terminal, convert the resulted image into an image in a designated format and quality and return the converted image to the browser of the client terminal via the Web server for displaying; and the Web server, configured to receive the image operation request from the client terminal, forward the image operation request to the image processing assembly, and return the image operation result from the image processing assembly to the client terminal.

公开(公告)号：US20180038809A1

公开(公告)日：2018-02-08

申请号：US15610450

申请日：2017-05-31

Applicant: NUCTECH COMPANY LIMITED

Inventor： Ziran Zhao ,  Zhiqiang Chen ,  Dong Lin ,  An Cang ,  Jin Cui ,  Bin Hu ,  Yanchao Zhang

IPC: G01N23/203 ,  B25J9/02 ,  A61B5/107

CPC classification number: G01N23/203 ,  A61B5/107 ,  B25J9/02 ,  G01N2223/053 ,  G01V5/0025 ,  G01V5/0066

Abstract: An autonomously mobile backscatter detection apparatus and method is disclosed. In one aspect, the apparatus includes a mobile platform configured to move freely in a horizontal plane. The apparatus further includes a backscatter detection imaging apparatus, arranged on the mobile platform, configured to acquire an image of an item to be inspected.

公开(公告)号：US09857317B2

公开(公告)日：2018-01-02

申请号：US14582069

申请日：2014-12-23

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Huaping Tang ,  Zhiqiang Chen ,  Chuanxiang Tang ,  Huaibi Chen ,  Yuanjing Li ,  Ziran Zhao ,  Yaohong Liu ,  Shangmin Sun ,  Xinshui Yan ,  Zhanfeng Qin

IPC: G21K4/00 ,  G01N23/04 ,  G01V5/00 ,  G01T7/08 ,  G21K1/02

CPC classification number: G01N23/043 ,  G01T7/08 ,  G01V5/0033 ,  G01V5/0041 ,  G01V5/005 ,  G21K1/025

Abstract: The X-ray fluoroscopic imaging system of the present invention comprises: an inspection passage; an electron accelerator; a shielding collimator apparatus comprising a shielding structure, and a first collimator for extracting a low energy planar sector X-ray beam and a second collimator for extracting a high energy planar sector X-ray beam which are disposed within the shielding structure; a low energy detector array for receiving the X-ray beam from the first collimator; and a high energy detector array for receiving the X-ray beam from the second collimator. The first collimator, the low energy detector array and the target point bombarded by the electron beam are located in a first plane; and the second collimator, the high energy detector array and the target point bombarded by the electron beam are located in a second plane.

公开(公告)号：US20170328844A1

公开(公告)日：2017-11-16

申请号：US15494884

申请日：2017-04-24

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Liang Li ,  Zhiqiang Chen ,  Kejun Kang ,  Li Zhang ,  Ziran Zhao ,  Yuxiang Xing ,  Jianmin Li ,  Yulan Li ,  Tiao Zhao

IPC: G01N23/087

CPC classification number: G01N23/087 ,  G01N23/046 ,  G01N2223/206 ,  G01N2223/419 ,  G01N2223/423

Abstract: Methods and system for decomposing a high-energy dual-energy X-ray CT material are disclosed. In the method, two types of effect such as Compton effect and electron pairing effect which dominates are reserved and the influence of the other effect such a photoelectric effect is removed so as to improve the accuracy of the material decomposition. The unique advantage of the present disclosure is to effectively remove the error of the calculated atomic number Z due to directly selecting two effects during processes of material decomposition in the conventional dual-energy CT method. This may greatly improve the accuracy of dual-energy CT identification of the material, and it is important to improve the conventional dual-use CT imaging system applications, such as clinical therapy, security inspection, industrial non-destructive testing, customs anti-smuggling and other fields.

公开(公告)号：US20170294118A1

公开(公告)日：2017-10-12

申请号：US15300947

申请日：2015-12-23

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Zhiqiang Chen ,  Li Zhang ,  Jianmin Li ,  Ziran Zhao ,  Yaohong Liu ,  Qiang Li ,  Zheng Hu ,  Jianping Gu ,  Ying Li

IPC: G08G1/054 ,  G08G1/017

CPC classification number: G08G1/054 ,  G01V5/0008 ,  G01V5/0016 ,  G06K9/4604 ,  G06K9/4642 ,  G08G1/015 ,  G08G1/017

Abstract: Disclosed is a vehicle identification method and system. The method includes: acquiring appearance information of an inspected vehicle; obtaining external features of the vehicle based on the appearance information; acquiring a transmission image of the vehicle and obtaining internal features of the vehicle from the transmission image; forming descriptions on the vehicle at least based on the external features and the internal features; and determining a vehicle model of the vehicle from a vehicle model databased by utilizing the descriptions. This method merges various types of modality information, especially introducing the transmission image, and combines the internal structure information with the appearance information, so that the present disclosure can identify a vehicle model more practically.

公开(公告)号：US09772306B2

公开(公告)日：2017-09-26

申请号：US15115217

申请日：2015-12-24

Applicant: NUCTECH COMPANY LIMITED

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Qiufeng Ma ,  Huishao He ,  Weiping Zhu ,  Xiang Zou ,  Jianping Chang ,  Song Liang

IPC: G01N27/00 ,  G01N27/62 ,  G01N27/64 ,  G01N30/30 ,  G01N30/46

CPC classification number: G01N27/622 ,  G01N27/64 ,  G01N30/30 ,  G01N30/46 ,  G01N30/466 ,  G01N2030/3038

Abstract: The present invention discloses a gas analyzing apparatus and a sampling device. The gas analyzing apparatus includes a sampling device and an ion mobility spectrum analysis device. The sampling device includes a multi-capillary column and a temperature control system. The ion mobility spectrum analysis device is adapted for analyzing a gas leaded-in by the sampling device and includes a reaction cavity for reaction between sample molecules and reaction ions, the cavity having a sampling opening for leading-in of the gas. An outlet end of the multi-capillary column is inserted directly into the cavity of the ion mobility spectrum analysis device through the sampling opening of the ion mobility spectrum analysis device.

公开(公告)号：US09763630B2

公开(公告)日：2017-09-19

申请号：US14525078

申请日：2014-10-27

Applicant: Nuctech Company Limited

Inventor： Zhiqiang Chen ,  Zhuowen Tu ,  Liang Li ,  Ziran Zhao ,  Duokun Zhang ,  Zhi Peng ,  Jin Cui ,  Dong Lin

IPC: A61B6/02 ,  G06T15/08 ,  H04N13/00 ,  A61B6/00 ,  G01V5/00

CPC classification number: A61B6/022 ,  A61B6/4266 ,  G01V5/0058 ,  G06T15/08 ,  G06T2207/20212 ,  H04N13/106 ,  H04N2213/003

Abstract: A stereoscopic imaging system and method is disclosed. In one aspect the system includes an X-ray source that emits a plurality of X-ray fanbeams. The system includes columns of detectors. Each column of detectors is arranged at a preset angle with respect to the X-ray source. The detectors detect a strength of an X-ray fanbeam penetrating an object under inspection. The detectors form transmission images when the object intersects, or moves along a direction intersecting with, the X-ray fanbeams. The system includes a reconstruction apparatus that uses any two of the formed transmission images as a binocular image. The reconstruction apparatus calculates depth information of the object on the transmission images. The reconstruction apparatus superposes and fuses the calculated depth information to obtain 3D information. The reconstruction apparatus performs 3D reconstruction so that the detected object can be presented in a stereoscopic manner from different view angles.

公开(公告)号：US09513266B2

公开(公告)日：2016-12-06

申请号：US14577653

申请日：2014-12-19

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Qiufeng Ma ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Xiang Zou ,  Yanchun Wang ,  Junxiao Wang ,  Jianping Chang

IPC: H01J49/00 ,  G01N30/72 ,  G01N27/62 ,  G01N27/64 ,  H01J49/04

CPC classification number: G01N30/7206 ,  G01N27/622 ,  G01N27/64 ,  H01J49/0422

Abstract: A GC-IMS system is disclosed. The system includes a sample transfer device. The sample transfer device connects the gas chromatograph to the reaction region and, the sample from the gas chromatograph is transferred to the reaction region by the sample transfer device. With the GC-IMS system, generation of sample molecular ion fragments can be avoided so that the spectrum is easily identified; moreover, the application field of the GC-IMS system is extended to a range of analysis of organic macromolecule samples which have a high polarity, are difficult to volatilize, and are thermally instable. On the other hand, the GC-IMS system overcomes the defect of ion destruction due to neutralization reaction among positive and negative ions so as to evade the detection.

Abstract translation: 公开了一种GC-IMS系统。 该系统包括样品转移装置。 样品转移装置将气相色谱仪连接到反应区域，样品转移装置将样品从气相色谱仪转移到反应区域。 使用GC-IMS系统，可以避免样品分子离子片段的产生，从而可以容易地鉴定光谱; 此外，GC-IMS系统的应用领域扩展到具有高极性，难以挥发和热不稳定的有机大分子样品的分析范围。 另一方面，GC-IMS系统克服了由于正离子和负离子之间的中和反应引起的离子破坏的缺陷，以避免检测。