公开(公告)号：US20140185773A1

公开(公告)日：2014-07-03

申请号：US14136514

申请日：2013-12-20

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Zhiqiang Chen ,  Yuanjing LI ,  Ziran ZHAO ,  Wanlong WU ,  Le TANG ,  Yinong LIU ,  Yingkang JIN ,  Wenguo LIU ,  Shuo CAO ,  Zhimin ZHENG ,  Guangwei DING ,  Ming RUAN ,  Xiuwei CHEN

IPC: G01N23/203

CPC classification number: G01N23/203 ,  G01V5/0025

Abstract: A human body security inspection system including a plurality of ray emitting-detecting modules, which are configured to emit X-rays to the object to be inspected and to receive X-rays scattered from the object to be inspected, wherein the ray emitting-detecting modules form an enclosed region with respect to the object to be inspected and security inspection is implemented on the object in the enclosed region.

Abstract translation: 一种人体安全检查系统，包括多个射线发射检测模块，其被配置为向被检查物体发射X射线并且接收从被检查物体散射的X射线，其中，所述射线发射检测 模块相对于待检查对象形成封闭区域，并且在封闭区域中的对象上实施安全检查。

公开(公告)号：US20140093152A1

公开(公告)日：2014-04-03

申请号：US14037236

申请日：2013-09-25

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Liang LI ,  Li ZHANG ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Yuxiang XING ,  Yongshun XIAO ,  Qingli WANG

IPC: G06T7/00

CPC classification number: G06T7/004 ,  A61B6/4085 ,  A61B6/466 ,  A61B6/469 ,  A61B6/5258 ,  G06T7/0012 ,  G06T7/55 ,  G06T7/70 ,  G06T11/006 ,  G06T2211/421 ,  G06T2211/436 ,  G16H40/63

Abstract: The present disclosure provides methods and devices for locating a plurality of interested objects in CT imaging. Location of the interested objects in the three-dimensional space can be determined by using three projection images that are substantially perpendicular to each other. The method can rapidly locate interested objects in a CT image without pre-reconstruction of the CT image even if there are a plurality of interested objects in the field of view. The algorithm does not involve interactive steps. The method is rapid and effective, and thus applicable to industrial applications.

Abstract translation: 本公开提供了用于在CT成像中定位多个感兴趣对象的方法和装置。 可以通过使用基本上彼此垂直的三个投影图像来确定兴趣对象在三维空间中的位置。 即使在视野中存在多个感兴趣的对象，该方法也可以快速定位CT图像中的感兴趣的对象，而无需对CT图像进行预重建。 该算法不涉及交互式步骤。 该方法快速有效，适用于工业应用。

公开(公告)号：US20220109241A1

公开(公告)日：2022-04-07

申请号：US17418951

申请日：2019-10-10

Applicant: NUCTECH COMPANY LIMITED

Inventor： Yuanjing LI ,  Haifan HU ,  Ziran ZHAO ,  Xuming MA

IPC: H01Q9/06 ,  H01P1/213 ,  H01P11/00

Abstract: The present disclosure provides a terahertz mixer, a method of manufacturing the terahertz mixer, and an electronic device including the mixer. The terahertz mixer includes: a cavity for forming a radio frequency input waveguide and a local oscillator input waveguide, and for accommodating a microstrip line; the microstrip line formed on at least a part of an inner surface of the cavity by using a semiconductor growth process, wherein the microstrip line extends into a portion of the cavity where the radio frequency input waveguide is located so as to form a microstrip antenna for receiving a radio frequency input signal, and into a portion of the cavity where the local oscillator input waveguide is located so as to form a microstrip antenna for receiving a local oscillator input signal.

公开(公告)号：US20210394366A1

公开(公告)日：2021-12-23

申请号：US17354056

申请日：2021-06-22

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Zhiqiang CHEN ,  Ziran ZHAO ,  Yan YOU ,  Yuanjing LI ,  Shixin ZHANG ,  Huan XIE ,  Xuming MA ,  Rui FAN ,  Yinglei WANG

IPC: B25J9/16 ,  G06T7/70 ,  G06T7/50 ,  G06K9/20 ,  H04N5/232 ,  H04N5/247 ,  H01Q13/02 ,  H01Q21/06 ,  G01S13/89 ,  G01S13/88

Abstract: A terahertz security inspection robot is provided, including: a housing including a main housing and a head housing rotatably connected to the main housing; a terahertz wave imaging mechanism including a mirror assembly arranged in the head housing and a detector array arranged in the main housing; and a rotating mechanism configured to cause the head housing and the mirror assembly located in the head housing to rotate with respect to the main housing, so that the mirror assembly of the terahertz wave imaging mechanism is oriented in different directions to respectively perform terahertz scanning and imaging on objects to be inspected in different inspection regions in a security inspection scene.

公开(公告)号：US20210141103A1

公开(公告)日：2021-05-13

申请号：US16624753

申请日：2018-05-29

Applicant: Nuctech Company Limited ,  TSINGHUA UNIVERSITY

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Ziran ZHAO ,  Lifeng SUN

IPC: G01T1/20

Abstract: A backscatter detection module includes: a plate-like light-transmitting carrier, two layers of scintillators and a light sensor. The light-transmitting carrier is made of a material that allows fluorescence photons to pass through, and has two light-transmitting planes opposite to each other and at least one light emergent end surface; the light emergent end surface is located between the two light-transmitting planes; the two layers of scintillators are respectively fixedly attached to the two light-transmitting planes; the light sensor is coupled to the light emergent end surface.

公开(公告)号：US20200012010A1

公开(公告)日：2020-01-09

申请号：US16491891

申请日：2017-12-20

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Zhiqiang CHEN ,  Yuanjing LI ,  Ziran ZHAO ,  Wanlong WU ,  Ming RUAN ,  Yingkang JIN ,  Guangwei DING ,  Zongjun SHEN ,  Jiajiang ZHAO

IPC: G01V5/00

Abstract: A human body security inspection apparatus, a method of operating the same, and an associated filter device are disclosed. The human body security inspection apparatus includes a radiation beam exit configured for emitting a radiation beam; a beam guiding box configured for guiding the radiation beam; and a filter device configured between the radiation beam exit and the beam guiding box. The filter device includes a housing and a filter cage having a central axis. The filter cage is formed by arranging two or more pairs of filtering sheets, which are made of different materials and/or have different thicknesses, in an encircling way. The filter cage is rotatable about its central axis such that at least one pair of filtering sheets is capable of filtering the radiation beam to adjust an outputted dosage of the radiation beam of the human body security inspection apparatus.

公开(公告)号：US20190193017A1

公开(公告)日：2019-06-27

申请号：US16232050

申请日：2018-12-26

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 ,  Nan BAI

IPC: B01D53/04 ,  B01D53/02 ,  G01N27/62 ,  G01N30/26

CPC classification number: B01D53/0446 ,  B01D53/025 ,  B01D53/0438 ,  B01D2257/80 ,  B01D2259/40003 ,  B01D2259/40086 ,  B01D2259/40096 ,  G01N27/622 ,  G01N30/26 ,  G01N2030/025

Abstract: The present disclosure relates to a gas purification apparatus and a trace substance detection device. The gas purification apparatus includes a first purification component, a second purification component and a switching component, wherein the switching component can be switched between a first state and a second state, the first purification component and a component to be purified form a gas purification loop in the first state, and the second purification component can provide a regeneration gas for the first purification component in the second state, so that water vapor and impurities in the first purification component are discharged to outside. In the gas purification apparatus, the filtered air is used as the regeneration gas to prevent secondary pollution in a recycling process of the purificant; furthermore, by means of the state switching function of the switching component, the mutual interference between the two working states of purification and regeneration can be prevented, and all the above advantages can improve the reliability of the recycling of the purificant, thereby optimizing the performance and the service life of the gas purification apparatus.

公开(公告)号：US20190170894A1

公开(公告)日：2019-06-06

申请号：US16253221

申请日：2019-01-22

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Kejun KANG ,  Yaohong LIU ,  Ziran ZHAO ,  Wei JIA ,  Jianping GU ,  Chuanxiang TANG ,  Huaibi CHEN ,  Jianjun GAO ,  Wei YIN ,  Xiying LIU

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

Abstract: This invention provides a scan method, scan system and radiation scan controller, and relates to the field of radiation. The scanning method includes obtaining detection data of an object to be inspected under radiation scanning using a detector, adjusting an accelerator output beam dose rate and/or an output electron beam energy level of a radiation emission device according to the detection data. With this method, working conditions of the accelerator of the radiation emission device may be adjusted according to the detection data detected by the detector, so that for a region having a larger mass thickness, a higher output beam dose rate or a higher electron beam output energy level is adopted to guarantee satisfied imaging technical indexes, for a region having a smaller mass thickness, a lower output beam dose rate or a lower electron beam output energy level is adopted to reduce the environmental dose level while guaranteeing satisfied imaging technical indexes.

公开(公告)号：US20180188388A1

公开(公告)日：2018-07-05

申请号：US15856303

申请日：2017-12-28

Applicant: Nuctech Company Limited

Inventor： Bozhen ZHAO ,  Qingjun ZHANG ,  Ziran ZHAO ,  Shuwei LI ,  Lifeng SUN ,  Wenjian ZHANG

IPC: G01T1/20

Abstract: A radiation detector assembly and a method of manufacturing the same are provided. The radiation detector assembly includes a base and an outer encapsulation layer. The base includes a scintillator having a light-entering surface and a light-exiting surface on both ends thereof, respectively; a reflection layer provided on the light-entering surface and an outer peripheral surface of the scintillator; a photosensor comprising a photosensitive surface and an encapsulation housing, the photosensitive surface is coupled to the light-exiting surface via an optical adhesive; and an inner encapsulation layer adhered to an outer surface of the reflection layer and hermetically encapsulates a coupling portion where the scintillator and the photosensor connected with each other. the outer encapsulation layer is provided on the outer surface of the base.

公开(公告)号：US20180164194A1

公开(公告)日：2018-06-14

申请号：US15826098

申请日：2017-11-29

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Ziran ZHAO ,  Ge LI ,  Qiufeng MA

IPC: G01N1/22 ,  G01N33/00

Abstract: It is disclosed a scrubbing and sampling device, a card reader apparatus and a gate apparatus. The scrubbing and sampling device includes: a scrubbing and sampling portion including a first wheel and a second wheel, which are respectively capable of rotating around respective rotating axes, and a scrubbing conveyor belt tensioned by the first wheel and the second wheel and driven by rotation of the first wheel and the second wheel, to move between them; and an desorbing portion configured to desorb properties of an sample that is conveyed into the desorbing portion. The scrubbing conveyor belt is configured to move through the desorbing portion such that the desorbing portion desorbs the sample on the scrubbing conveyor belt when the scrubbing conveyor belt enters the desorbing portion.