公开(公告)号：US09052284B2

公开(公告)日：2015-06-09

申请号：US14128894

申请日：2012-12-28

Applicant: Nuctech Company Limited

Inventor： Shiping Cao ,  Qingjun Zhang ,  Zhiqiang Chen ,  Ziran Zhao ,  Yuanjing Li ,  Yinong Liu ,  Shuqiang Dong

IPC: H01J49/26 ,  G01N27/62

CPC classification number: G01N27/624 ,  G01N27/622

Abstract: The present invention discloses an asymmetric field ion mobility spectrometer. It comprises an ionization source, for generating ions; an electrode plate; a plurality of electrode filaments, arranged in opposite to and spaced apart from the electrode plate by an analysis gap, wherein a high voltage of electrical field is applied between the electrode plate and the electrode filaments to form an ion migration area, the electrode filaments used to collect the ions that do not pass through the ion migration area; and a collection electrode, disposed at a rear end of the ion migration area, and collecting the ions that have passed through the ion migration area. The present asymmetric field ion mobility spectrometer is capable of improving accuracy of identifying peak positions of the ions, reducing scanning time of DC voltage and types of compensation voltage, thereby increasing ion detection efficiency.

Abstract translation: 本发明公开了一种不对称场离子迁移谱仪。 它包括用于产生离子的电离源; 电极板; 多个电极丝，通过分析间隙与电极板相对并间隔布置，其中在电极板和电极丝之间施加高电压的电场以形成离子迁移区域，所用的电极丝 收集不通过离子迁移区的离子; 以及收集电极，设置在离子迁移区域的后端，并且收集已经通过离子迁移区域的离子。 本不对称场离子淌度光谱仪能够提高识别离子峰位置的精度，减少直流电压的扫描时间和补偿电压的种类，从而提高离子检测效率。

公开(公告)号：US20140211917A1

公开(公告)日：2014-07-31

申请号：US14129655

申请日：2012-12-31

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang Chen ,  Li Zhang ,  Ziran Zhao ,  Yuxiang Xing ,  Jia Hao ,  Liang Li

IPC: G01V5/00

CPC classification number: G01V5/0016 ,  A61B6/032 ,  A61B6/4007 ,  A61B6/4014 ,  A61B6/4078 ,  A61B6/4233 ,  A61B6/4275 ,  G01N23/046 ,  G01T1/2985 ,  G01V5/005

Abstract: The present invention discloses apparatus and method for ray scanning imaging. The apparatus comprises a plurality of ray generators and a ray detection device. The plurality of ray generators are arranged uniformly along a circular arc and emit ray beams in sequence or simultaneously to an object to be inspected within a single scanning period. The ray detection device may be either in a multi-segmental semi-closed configuration composed of a plurality of linear arrays of ray detectors or in a circular arc configuration where a plurality of ray detection units arranged uniformly along a circular arc. During the inspection, the apparatus is advantageous in obtaining the complete ray projection values without rotation thereof, so as to effectively shorten the inspection time.

Abstract translation: 本发明公开了一种用于射线扫描成像的装置和方法。 该装置包括多个射线发生器和射线检测装置。 多个射线发生器沿着圆弧均匀地布置，并且在单个扫描周期内依次发射射线束或同时发射到被检查物体。 射线检测装置可以是由多个线状阵列的射线检测器组成的多段半封闭构造，也可以是多个沿着圆弧均匀排列的射线检测单元的圆弧结构。 在检查期间，该装置有利于获得完整的射线投影值而不旋转，以便有效地缩短检查时间。

公开(公告)号：US20140056410A1

公开(公告)日：2014-02-27

申请号：US13971275

申请日：2013-08-20

Applicant: Nuctech Company Limited

Inventor： Ziran Zhao ,  Wanlong Wu ,  Yingkang Jin ,  Le Tang ,  Chenguang Zhu ,  Guangwei Ding ,  Shuo Cao

IPC: G01V5/00

CPC classification number: G01V5/0025 ,  G01V5/0075

Abstract: The present invention discloses a back-scatter human body security inspection system, capable of detecting a radioactive matter carried by the human body, comprising: a radiation source configured to generate radiation rays, a flying spot forming device, configured to modulate the radiation rays from the radiation source, so as to form flying spot scanning beams for scanning the human body to be detected, a detector configured to detect radiation rays from the human body to be detected and output a signal characterizing a dose of the radiation rays, a control and data processing device, configured to process the signal outputted from the detector to obtain a radiation image of the human body to be detected. The detector detects the radiation rays from the radiation source scattered by the human body to be detected, separately at different times, and the radiation rays from the radioactive matter carried by the human body to be detected. In the present invention, the application ranges of the back-scatter human body scanning apparatus can be effectively expanded, without adding and modifying the hardware therein, thereby increasing the monitoring function to the radioactive matter carried by the human body and further improving the effects of the human body security inspection.

Abstract translation: 本发明公开了一种能够检测人体携带的放射性物质的背散射人体安全检查系统，包括：被配置为产生放射线的辐射源，飞点形成装置，其被配置为调制来自 辐射源，以便形成用于扫描要检测的人体的飞点扫描光束;检测器，被配置为检测来自人体的待检测的辐射线，并输出表征辐射射线剂量的信号;控制和 数据处理装置，被配置为处理从检测器输出的信号，以获得要检测的人体的放射线图像。 检测器在不同时间分别检测来自被检测人体的辐射源的辐射线，以及来自被检测人体携带的放射性物质的辐射线。 在本发明中，可以有效地扩展背散射式人体扫描装置的应用范围，而不需要对其中的硬件进行增加和修改，从而增加对人体携带的放射性物质的监测功能，进一步提高 人体安全检查。

公开(公告)号：US12164023B2

公开(公告)日：2024-12-10

申请号：US17304927

申请日：2021-06-28

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang Chen ,  Yan You ,  Ziran Zhao ,  Xuming Ma ,  Kai Wang

IPC: G01S13/88 ,  G01S13/89

Abstract: A security inspection apparatus and a method of controlling the same are described. An example security inspection apparatus includes a bottom plate configured to carry an inspected object and a two-dimensional multi-input multi-output array panel, including at least one two-dimensional multi-input multi-output sub-array. Each two-dimensional multi-input multi-output sub-array includes transmitting antennas and receiving antennas arranged such that equivalent phase centers are arranged in a two-dimensional array. The security inspection apparatus includes a control circuit configured to control the transmitting antennas to transmit a detection signal in a form of an electromagnetic wave to the inspected object in a preset order, and to control the receiving antennas to receive an echo signal from the inspected object. The security inspection apparatus includes a signal processing device configured to reconstruct an image of an inspected object based on an echo signal received and a display device configured to display the reconstructed image.

公开(公告)号：US11699223B2

公开(公告)日：2023-07-11

申请号：US15858868

申请日：2017-12-29

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Ziran Zhao ,  Jianping Gu ,  Bicheng Liu ,  Qi Wang ,  Xi Yi

IPC: G06T7/00 ,  G06T15/08 ,  G06F3/01 ,  G01T1/00 ,  G06T7/73 ,  G01P13/00 ,  G01V5/00 ,  G06Q50/30

CPC classification number: G06T7/0004 ,  G01P13/00 ,  G01T1/00 ,  G01V5/0058 ,  G06F3/016 ,  G06T7/74 ,  G06T15/08 ,  G06Q50/30 ,  G06T2207/10012 ,  G06T2207/10081 ,  G06T2207/30232

Abstract: A method, a device and a security system for image data processing based on VR or AR are disclosed. In one aspect, an example image data processing method includes reconstructing, based on three-dimensional (3D) scanned data of a containing apparatus in which objects are contained, a 3D image of the containing apparatus and the objects contained in the containing apparatus. The reconstructed 3D image is stereoscopically displayed. Manipulation information is determined for at least one of the objects in the containing apparatus based on positioning information and action information of a user. At least a 3D image of the at least one object is reconstructed based on the determined manipulation information. The at least one reconstructed object is presented on the displayed 3D image.

公开(公告)号：US11619599B2

公开(公告)日：2023-04-04

申请号：US16935415

申请日：2020-07-22

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Zhi Zeng ,  Xingyu Pan ,  Xuewu Wang ,  Junli Li ,  Ming Zeng ,  Jianmin Li ,  Ziran Zhao ,  Jianping Cheng ,  Hao Ma ,  Hui Zhang ,  Hao Yu ,  Bicheng Liu

IPC: G01N23/201 ,  G01N23/02 ,  G06K9/62

Abstract: The present disclosure provides a substance identification device and a substance identification method. The substance identification device comprises: a classifier establishing unit configured to establish a classifier based on scattering density values reconstructed for a plurality of known sample materials, wherein the classifier comprises a plurality of feature regions corresponding to a plurality of characteristic parameters for the plurality of known sample materials, respectively; and an identification unit for a material to be tested, configured to match the characteristic parameter of the material to be tested with the classifier, and to identify a type of the material to be tested by obtaining a feature region corresponding to the characteristic parameter of the material to be tested.

公开(公告)号：US20210325561A1

公开(公告)日：2021-10-21

申请号：US17304903

申请日：2021-06-28

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Ziran Zhao ,  Yan You ,  Yuanjing Li ,  Xuming Ma ,  Jian Wu

IPC: G01V3/12 ,  G01V3/38

Abstract: The application describes a security inspection apparatus and a method of controlling the same. An example security inspection apparatus includes a body fixed in the field and an electromagnetic imaging device installed on the body. The electromagnetic imaging device includes a two-dimensional multi-input multi-output array panel, including at least one two-dimensional multi-input multi-output sub-array and a control circuit. Each two-dimensional multi-input multi-output sub-array includes transmitting antennas and receiving antennas, with the transmitting antennas and the transmitting antennas being arranged such that equivalent phase centers are arranged in a two-dimensional array. The electromagnetic imaging device further includes a signal processing device configured to reconstruct an image of an inspected object based on an echo signal received and a display device configured to display the reconstructed image of the inspected object.

公开(公告)号：US20210325528A1

公开(公告)日：2021-10-21

申请号：US17304927

申请日：2021-06-28

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang Chen ,  Yan You ,  Ziran Zhao ,  Xuming Ma ,  Kai Wang

IPC: G01S13/88 ,  G01S13/89 ,  H01Q1/22

Abstract: A security inspection apparatus and a method of controlling the same are described. An example security inspection apparatus includes a bottom plate configured to carry an inspected object and a two-dimensional multi-input multi-output array panel, including at least one two-dimensional multi-input multi-output sub-array. Each two-dimensional multi-input multi-output sub-array includes transmitting antennas and receiving antennas arranged such that equivalent phase centers are arranged in a two-dimensional array. The security inspection apparatus includes a control circuit configured to control the transmitting antennas to transmit a detection signal in a form of an electromagnetic wave to the inspected object in a preset order, and to control the receiving antennas to receive an echo signal from the inspected object. The security inspection apparatus includes a signal processing device configured to reconstruct an image of an inspected object based on an echo signal received and a display device configured to display the reconstructed image.

公开(公告)号：US11152932B2

公开(公告)日：2021-10-19

申请号：US16110355

申请日：2018-08-23

Applicant: Nuctech Company Limited

Inventor： Yaohong Liu ,  Ziran Zhao ,  Jinsheng Liu ,  Wei Jia ,  Wei Li ,  Xinshui Yan

IPC: H03K17/0812 ,  H03K3/57 ,  H03K17/081 ,  H03K17/567 ,  H03K17/06

Abstract: The disclosed technology relates to a gate protection circuit for an Insulated Gate Bipolar Transistor (IGBT), the IGBT being used as a switch device in a solid state pulse modulator based on the MARX generator principle, the gate protection circuit including: a voltage regulator configured to supply a stable voltage to an emitter of the IGBT with respect to the ground for a gate of the IGBT.

公开(公告)号：US10914693B2

公开(公告)日：2021-02-09

申请号：US16045243

申请日：2018-07-25

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Liang Li ,  Zhiqiang Chen ,  Li Zhang ,  Ziran Zhao ,  Yuxiang Xing ,  Siyuan Zhang

IPC: G01N23/00 ,  G01N23/2206 ,  G01N23/046 ,  G01N23/223 ,  A61B6/03 ,  A61B6/06 ,  A61B6/10 ,  A61B6/00

Abstract: The present disclosure discloses a ray transmission and fluorescence CT imaging system and method. The system comprises: a ray source configured to emit a beam of rays; a rotational scanning device configured to perform rotational CT scanning on an object to be inspected; a transmission CT detector configured to receive the beam of rays which has passed through the object; a fluorescence CT detector configured to receive fluorescent photons excited by irradiation of the beam of rays on the object; a data acquisition unit configured to acquire a transmission data signal and a fluorescence data signal respectively; and a control and data processing unit configured to control the ray source to emit the beam of rays, control the rotational scanning device to perform the rotational CT scanning, and obtain a transmission CT image and a fluorescence CT image simultaneously based on the transmission data signal and the fluorescence data signal.