公开(公告)号：US20180149767A1

公开(公告)日：2018-05-31

申请号：US15727637

申请日：2017-10-09

Applicant: NUCTECH COMPANY LIMITED

Inventor： Xuping Fan ,  Quanwei Song ,  Zhiqiang Chen ,  Shangmin Sun

IPC: G01V5/00

Abstract: The present invention relates to an inspection system. The inspection system comprises a base, a boom lifting mechanism provided on the base, and a boom mounting a detector. The boom lifting mechanism includes at least two support arms arranged sequentially. The at least two support arms include a base arm and a distal arm. The base arm is connected to the base, the boom is mounted on the distal arm, the inspection system has a scanning state and a transporting state, and two adjacent support arms of the at least two support arms are rotatably connected so that the height of the boom in the scanning state is different from that in the transporting state. The boom lifting mechanism of the inspection system of the present invention lifts the boom by rotatably connecting two adjacent support arms, and presents less required driving force compared to the lifting of the boom directly in a vertical direction in the prior art. Thus, there is less weight of the driving mechanism for driving the lifting of the boom, so as to reduce the self-weight of the inspection system.

公开(公告)号：US09846258B2

公开(公告)日：2017-12-19

申请号：US14792066

申请日：2015-07-06

Applicant: NUCTECH COMPANY LIMITED

Inventor： Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Wanlong Wu ,  Yingkang Jin ,  Le Tang ,  Chengcong Xu ,  Ming Ruan ,  Guangwei Ding

IPC: G01N23/201 ,  G01V5/00 ,  G01N23/203

CPC classification number: G01V5/0025 ,  G01N23/203 ,  G01V5/0066

Abstract: The present disclosure provides an X-ray backscattering safety inspection system, comprising: one or more backscattering inspection subsystem configured to inspect an object to be inspected by emitting X-ray beams towards the object to be inspected and inspecting scattering signals; and a control subsystem configured to adjust a distance between the backscattering inspection subsystem and locations on a side of the object to be inspected where are irradiated by the X-ray beams in real time according to a size of the object to be inspected such that the scattering signals inspected are optimized. The system may be adapted to objects to be inspected with different sizes or shapes while enhancing backscattering signals for imaging.

公开(公告)号：US09823382B2

公开(公告)日：2017-11-21

申请号：US14965122

申请日：2015-12-10

Applicant: Nuctech Company Limited

Inventor： Jianmin Li ,  Yulan Li ,  Jingyu Gu ,  Yuanjing Li ,  Quanwei Song ,  Weizhen Wang ,  Dongyu Wang ,  Zhiqiang Chen ,  Chaunxiang Tang ,  Yinong Liu ,  Junli Li ,  Tao Xue ,  Hui Gong ,  Xuewu Wang

IPC: G01N23/02 ,  G01K1/04 ,  G01V5/00 ,  B60R11/00

CPC classification number: G01V5/0016 ,  B60R11/00 ,  B60R2011/004

Abstract: A vehicle mounted mobile container or vehicle inspection system, including: a radiation source, a movable vehicle for carrying the inspection system, and a detector arm rack which has a horizontal arm and a vertical arm, a first end of the horizontal arm is connected to the vehicle and a second end thereof is connected to an end of the vertical arm. The horizontal arm and the vertical arm are connected by a pivotal connecting device such that the vertical arm may pivot in a vertical plane, and the horizontal arm and the vertical arm may be retracted in a same horizontal plane. The novel arm rack construction may reduce the space occupied by it on top of the scanning vehicle after the arm rack is stowed so as to reduce the eight of the scanning vehicle under running condition.

公开(公告)号：US09784883B2

公开(公告)日：2017-10-10

申请号：US14577069

申请日：2014-12-19

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang Chen ,  Li Zhang ,  Qingping Huang ,  Yunda Sun ,  Xin Jin ,  Tao Yang ,  Le Shen ,  Ji Zhao

IPC: G01N23/00 ,  G01V5/00 ,  G01T1/29 ,  G01N23/04

CPC classification number: G01V5/0041 ,  G01N23/046 ,  G01T1/2985 ,  G01V5/005

Abstract: Multi-spectral static CT apparatuses are disclosed. The apparatus includes a ray source in a form of multiple distributed spots, multiple columns of detectors, a data acquisition device, an article carrying and control device, and a multi-spectral projection data processing device. An object of the present disclosure is to combine static CT scanning technology with multi-spectral analysis technology. It has an advantage of a static CT system, such as high scanning speed, simple mechanic structure, and/or cost reduction due to omission of slip ring. It also can perform identification of material in an article, and can be widely applied in occasions such as safety inspection, and smuggling suppression at customs.

公开(公告)号：US09771515B2

公开(公告)日：2017-09-26

申请号：US14827248

申请日：2015-08-14

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Yanchun Wang ,  Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Jianping Chang ,  Shuqing Zhao ,  Wenjian Zhang ,  Yongqiang Wang

IPC: C09K11/77 ,  C04B35/63 ,  C04B35/645 ,  G01T1/29

CPC classification number: C09K11/7771 ,  C04B35/547 ,  C04B35/62615 ,  C04B35/6303 ,  C04B35/645 ,  C04B35/6455 ,  C04B2235/3224 ,  C04B2235/445 ,  C04B2235/5436 ,  C04B2235/5463 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6565 ,  C04B2235/662 ,  G01T1/2935

Abstract: The present disclosure is directed to a low cost sintering process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics, comprising uniaxial hot pressing primary sintering and hot isostatic pressing secondary sintering.

公开(公告)号：US09746579B2

公开(公告)日：2017-08-29

申请号：US14576737

申请日：2014-12-19

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Li Zhang ,  Zhiqiang Chen ,  Qingping Huang ,  Xin Jin ,  Yunda Sun ,  Le Shen ,  Ji Zhao

IPC: A61B6/00 ,  G01V5/00 ,  G01N23/04 ,  G01T7/08 ,  G06T11/00

CPC classification number: G01V5/005 ,  G01N23/046 ,  G01T7/08 ,  G06T11/003 ,  G06T2207/10072 ,  G06T2211/40

Abstract: A CT system and method thereof are disclosed. The system includes: a conveyor mechanism; a first scanning stage configured to scan the object and generate a first digital signal; a second scanning stage spaced from the first scanning stage at a preset distance in a direction of the object's movement; a processing device configured to reconstruct a CT image of the object at a first image quality based on the first digital signal, and analyze the CT image; and a control device configured to adjust a scanning parameter of the second scanning stage based on an analysis result of the processing device to cause the second scanning stage to output a second digital signal. The processing device reconstructs a CT image of the object at a second image quality higher than the first image quality at least based on the second digital signal. The system takes full advantage of the distributed ray sources which replace the normal slip ring technology.

公开(公告)号：US09702832B2

公开(公告)日：2017-07-11

申请号：US14304848

申请日：2014-06-13

Applicant: NUCTECH COMPANY LIMITED

Inventor： Le Shen ,  Yuxiang Xing ,  Li Zhang ,  Zhiqiang Chen

IPC: A61B6/03 ,  G01N23/04 ,  A61B6/00 ,  G06T11/00

CPC classification number: G01N23/046 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/5205 ,  A61B6/5258 ,  G06T11/005 ,  G06T11/006 ,  G06T2211/408 ,  G06T2211/436

Abstract: Disclosed is a CT imaging method and system. The method includes: CT scanning an object with a dual-energy CT system to obtain a first complete set of projection data in a first scan mode, and to obtain a second incomplete set of projection data in a second scan mode; reconstructing a first attenuation coefficient image of the object from the first set of projection data, and extracting, from the first attenuation coefficient image, prior structure information of the object indicating edge intensity; and reconstructing a second attenuation coefficient image of the object from the second incomplete set of projection data using the extracted prior structure information as a constraint. With the method using the prior structure information of the imaged object as a constraint in reconstruction, it is possible to dramatically reduce an amount of data required for reconstruction, and achieve satisfactory effects even with ill-conditioned problems of limited-angle and inner reconstruction.

公开(公告)号：US20170184756A1

公开(公告)日：2017-06-29

申请号：US15279207

申请日：2016-09-28

Applicant: NUCTECH COMPANY LIMITED ,  CINTS CO. LTD.

Inventor： Qitian Miao ,  Zhiqiang Chen ,  Li Zhang ,  Yunda Sun ,  Ming Huang ,  Qingping Huang ,  Ming Hu ,  Lei Lei ,  Jie Xia

IPC: G01V5/00

CPC classification number: G01V5/005 ,  G01N23/046 ,  G01V5/0041

Abstract: The present disclosure discloses an inspection system for quarantine and a method thereof. The CT technology is applied to the field of quarantine supervision, overcoming a problem of objects in an image of a single-view or a multi-view X-ray machine being overlapped, as well as a problem of organics including contrabands in a conventional CT image being not highlighted, not elaborated, and having bad contrast. Accuracy and efficiency of inspecting an object by human operator for quarantine inspection can be considerably improved, which is of a high application value.

公开(公告)号：US09651507B2

公开(公告)日：2017-05-16

申请号：US14572528

申请日：2014-12-16

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang Chen ,  Ziran Zhao ,  Yuanjing Li ,  Wanlong Wu ,  Ming Ruan ,  Li Zhang ,  Yingkang Jin ,  Le Tang ,  Xianli Ding ,  Chenguang Zhu

IPC: G01N23/203 ,  G01T1/167 ,  G01V5/00

CPC classification number: G01N23/203 ,  G01T1/167 ,  G01V5/0025 ,  G01V5/0091

Abstract: A human body back-scattering inspection method and system are discloses. The method includes: obtaining a back-scattering scan image of a human body under inspection; distinguishing a body image from a background image in the back-scattering scan image; and calculating a feature parameter of the background image to determine whether radioactive substance is carried with the human body. With some embodiments of the present disclosure, it is possible to determine whether any radioactive substance is carried with a human body during back-scattering inspection of the human body. In further embodiments of the present disclosure, it is possible to approximately determine which part(s) of the human body carries the radioactive substance. This improves efficiency of inspection.

公开(公告)号：US09618484B2

公开(公告)日：2017-04-11

申请号：US14577603

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 ,  Junxiao Wang ,  Xiang Zou ,  Yanchun Wang ,  Jianping Chang ,  Linxia Tan

IPC: G01N30/18 ,  G01N30/12 ,  G01N30/72 ,  G01N27/62 ,  G01N30/20 ,  G01N30/30 ,  G01N30/02

CPC classification number: G01N30/18 ,  G01N27/622 ,  G01N30/12 ,  G01N30/20 ,  G01N30/30 ,  G01N30/7206 ,  G01N2030/025

Abstract: The present invention discloses a general sample injector, comprising a sample injection port mechanism, a sample injector shell, a vaporizing chamber, a heater, a temperature control unit, a carrier gas channel, a septum purge channel, a flow splitting channel, a coolant channel, a multichannel flow control valve and a temperature control unit. The general sample injector, equivalent to a “programmed temperature vaporizer” injector combining splitting/no splitting with cold column head sample injection, gives full play to the advantages of various sample injection modes, overcomes a plurality of disadvantages, and has higher practicability and better flexibility.