公开(公告)号：US20150115152A1

公开(公告)日：2015-04-30

申请号：US14525058

申请日：2014-10-27

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Shiping Cao ,  Yuanjing Li ,  Zhiqiang Chen ,  Ziran Zhao ,  Yinong Liu ,  Jianpang Chang ,  Yan Zheng ,  Yanchun Wang ,  Shaoji Mao

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

CPC classification number: G01N27/622 ,  G01N30/7206 ,  H01J49/0422 ,  H01J49/0468

Abstract: An ion mobility spectrometer system is disclosed. In one aspect, the system includes a gas chromatograph, first and second ion mobility spectrometers, and a sample feed device that feeds a sample from the gas chromatograph to the first and second ion mobility spectrometers. The sample feed device includes an inner chamber, first and second sample outlets for outputting the sample from the gas chromatograph to the first and second ion mobility spectrometers, respectively, and a gas inlet for inputting a gas into the sample feed device. The system detects and identifies molecules at improved resolution and enhanced molecule information. The system detects positive and negative ions, interrelates positive-mode and negative-mode spectrums, and separates substances.

Abstract translation: 公开了一种离子迁移谱仪系统。 在一个方面，该系统包括气相色谱仪，第一和第二离子迁移谱仪，以及将样品从气相色谱仪供给到第一和第二离子迁移谱仪的样品进料装置。 样品进料装置包括内室，用于将样品从气相色谱仪分别输出到第一和第二离子迁移谱仪的第一和第二样品出口，以及用于将气体输入到样品进料装置中的气体入口。 该系统以改进的分辨率和增强的分子信息检测和识别分子。 系统检测正离子和负离子，相互作用正模式和负模式光谱，并分离物质。

公开(公告)号：US20150085973A1

公开(公告)日：2015-03-26

申请号：US14494301

申请日：2014-09-23

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Mingliang Li ,  Zhiqiang Chen ,  Yuanjing Li ,  Jianmin Li ,  Li Zhang

IPC: G01N23/04 ,  G21K1/02

CPC classification number: G01N23/046 ,  A61B6/032 ,  A61B6/035 ,  A61B6/06 ,  G01N2223/3301 ,  G01T1/2985 ,  G21K1/025

Abstract: A straight trajectory CT device can be used in radiation imaging. The device includes: a ray-generating unit that generates a ray within a specific range of field angle; a channel for an object to be inspected though which the object to be inspected passes; a first collimator; and a ray receiving unit provided on both sides of the channel for the object to be inspected. The ray beam is received by the ray receiving unit after penetrating the first collimator and the object to be inspected in order. The ray generating unit is static and the first collimator moves in the same direction as the ray receiving unit. This direction is parallel to the channel for the object to be inspected. The device can complete computed tomography with a minimum of one ray receiving unit, thereby simplifying the structure of the device and reducing its cost.

Abstract translation: 直线轨迹CT装置可用于放射成像。 该装置包括：射线产生单元，其在特定的场角范围内产生射线; 被检查对象通过的通道; 第一个准直器 以及设置在用于被检查物体的通道两侧的光线接收单元。 射线束在穿透第一准直仪和待检查物体之后被射线接收单元接收。 射线产生单元是静态的，并且第一准直仪沿与射线接收单元相同的方向移动。 该方向与待检查对象的通道平行。 该设备可以用至少一个射线接收单元完成计算机断层摄影，从而简化了设备的结构并降低了其成本。

公开(公告)号：US08921771B2

公开(公告)日：2014-12-30

申请号：US14005820

申请日：2012-11-29

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Zhiqiang Chen ,  Qingjun Zhang ,  Shuqiang Dong ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Yan Zheng

IPC: B01D59/44 ,  H01J49/00 ,  H01T19/04 ,  H01J49/26

CPC classification number: H01T19/04 ,  G01N27/622 ,  G01N27/68 ,  H01J27/022 ,  H01J49/168 ,  H01J49/26

Abstract: The present invention provides a corona discharge device, comprising a first electrode including: a first substantially cylindrical inner chamber portion and a second substantially conical inner chamber portion in communication with the first inner chamber portion, wherein the second inner chamber portion has a cross sectional area that gradually enlarges in a direction away from the first inner chamber portion. The present invention also provides an ion mobility spectrometer comprising: an ionization region; and the corona discharge device disposed in the ionization region. With the above construction and structure, the ion mobility spectrometer of the present invention has the advantages that extraction of ions is facilitated and a life time of the corona electrode is lengthened. In addition, the focusing and storing electrode is used to effectively shield interference of a corona discharge pulse, and to push and focus sample ions. A designed voltage control solution is used to achieve mobility differentiating of ions, while a corona pulse is shielded to prevent variation in an ion quantity due to the corona pulse, thereby achieving an effect of stabilizing mobility spectrum lines.

Abstract translation: 本发明提供一种电晕放电装置，包括：第一电极，包括：与第一内室部分连通的第一基本上圆柱形的内室部分和第二基本上圆锥形的内室部分，其中第二内室部分具有横截面积 其在远离第一内室部分的方向上逐渐扩大。 本发明还提供了一种离子迁移谱仪，包括：电离区域; 以及设置在电离区域中的电晕放电装置。 通过上述结构和结构，本发明的离子迁移谱仪具有促进离子提取和电晕电极寿命延长的优点。 此外，聚焦和存储电极用于有效屏蔽电晕放电脉冲的干扰，并推动和聚焦样品离子。 使用设计的电压控制解决方案来实现离子的移动性差异，同时屏蔽电晕脉冲以防止由于电晕脉冲引起的离子量的变化，从而实现稳定迁移率谱线的效果。

公开(公告)号：US20140341431A1

公开(公告)日：2014-11-20

申请号：US14365090

申请日：2012-11-27

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Zhiqiang Chen ,  Ziran Zhao ,  Wanlong Wu ,  Zhimin Zheng ,  Zongjun Shen ,  Xilei Luo ,  Shuo Cao ,  Yingkang Jin ,  Bin Sang

IPC: G01V8/00 ,  G06K9/62 ,  G06K9/20

CPC classification number: G01V8/005 ,  G06K9/209 ,  G06K9/6201

Abstract: The present invention discloses a through-type of millimetre wave person body security inspection system, wherein a person to be inspected passes through an inspect passage therein for performing a security inspection. The through-type of millimetre wave person body security inspection system provided in accordance with the present invention can make a total body dynamic scanning to the person to be inspected, and obtain millimetre wave images and optical images with respect to the person body, thereby achieving the inspection of prohibited articles hidden within clothing of the person body and an automatic alarm thereof.

Abstract translation: 本发明公开了一种毫米波人身安全检查系统，其中被检人通过其中的检查通道进行安全检查。 根据本发明提供的毫米波人身安全检查系统的直通型可以对被检查人员进行全身动态扫描，并获得相对于人体的毫米波图像和光学图像，从而实现 检查隐藏在人身衣服内的被禁止物品及其自动报警。

公开(公告)号：US08891081B1

公开(公告)日：2014-11-18

申请号：US14145454

申请日：2013-12-31

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Zhiqiang Chen ,  Li Zhang ,  Jianhong Zhang ,  Hongqui Wang ,  Ziran Zhao ,  Jianping Gu ,  Zhiming Wang ,  Qingping Huang ,  Yumin Yi

IPC: G01J3/44 ,  G01N21/65

CPC classification number: G01N21/65

Abstract: A raman spectroscopy method of measuring melamine contents in dairy products having different matrixes. The method includes: (a) establishing a database of characteristic curves of dairy products having different matrixes; (b) taking several copies of the dairy products having one certain unknown matrix and adding melamine standard solutions having different concentrations therein, to obtain a series of dairy product samples in which the relative concentrations of the melamine are known; (c) performing raman spectrum testing analysis and obtaining corresponding characteristic peak intensities to obtain a slope of the characteristic curve showing variation of the characteristic peak intensities with the relative concentrations of the melamine; (d) searching the database of step (a) using the slope of the characteristic curve of the dairy product samples to find a matching characteristic curve, and (e) calculating concentration of melamine in the dairy products by using the matched characteristic curve and the characteristic peak intensity.

Abstract translation: 测量具有不同基质的乳制品中三聚氰胺含量的拉曼光谱法。 该方法包括：（a）建立具有不同矩阵的乳制品特征曲线数据库; （b）取几份具有一定未知基质的乳制品，并加入其中浓度不同的三聚氰胺标准溶液，以获得其中已知三聚氰胺的相对浓度的一系列乳制品样品; （c）进行拉曼光谱测试分析并获得相应的特征峰强度，以获得特征曲线的斜率，显示特征峰强度与三聚氰胺的相对浓度的变化; （d）使用乳制品样品的特征曲线的斜率来搜索步骤（a）的数据库，以找到匹配的特征曲线，以及（e）通过使用匹配的特征曲线计算乳制品中三聚氰胺的浓度， 特征峰强度。

公开(公告)号：US20140314201A1

公开(公告)日：2014-10-23

申请号：US14129669

申请日：2012-12-28

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Shuwei LI ,  Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Qingjun Zhang ,  Weibin Zhu ,  Yi Wang ,  Shuqing Zhao ,  Wenjian Zhang

IPC: G01N23/087 ,  G01T1/22

CPC classification number: G01N23/087 ,  G01N2223/402 ,  G01N2223/507 ,  G01T1/22

Abstract: Methods and apparatuses for measuring an effective atomic number of an object are disclosed. The apparatus includes: a ray source configured to product a first X-ray beam having a first energy and a second X-ray beam having a second energy; a Cherenkov detector configured to receive the first X-ray beam and the second X-ray beam that pass through an object under detection, and to generate a first detection value and a second detection value; and a data processing device configured to obtain an effective atomic number of the object based on the first detection value and the second detection value. The Cherenkov detector can eliminate disturbance of X-rays below certain energy threshold with respect to the object identification, and thus accuracy can be improved for object identification.

Abstract translation: 公开了用于测量物体的有效原子序数的方法和装置。 该装置包括：射线源，被配置为产生具有第一能量的第一X射线束和具有第二能量的第二X射线束; 切伦科夫检测器，被配置为接收通过检测对象的第一X射线束和第二X射线束，并产生第一检测值和第二检测值; 以及数据处理装置，被配置为基于所述第一检测值和所述第二检测值来获得所述对象的有效原子序数。 切恩科夫检测器可以消除相对于物体识别的某些能量阈值以下的X射线干扰，从而可以提高对象识别的精度。

公开(公告)号：US20140185923A1

公开(公告)日：2014-07-03

申请号：US14136462

申请日：2013-12-20

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Zhiqiang Chen ,  Li Zhang ,  Ziran Zhao ,  Qingping Huang ,  Qiang Li ,  Jianping Gu ,  Yunda Sun

IPC: G06K9/00

CPC classification number: G06T7/596 ,  G06K9/00201 ,  G06K9/00523 ,  G06K9/00536 ,  G06K9/6215 ,  G06K9/627 ,  G06K2209/09 ,  G06T7/0004 ,  G06T7/68 ,  G06T11/008 ,  G06T2207/10081 ,  G06T2207/30112 ,  G06T2211/408

Abstract: Methods for extracting a shape feature of an object and security inspection methods and apparatuses. Use is made of CT's capability of obtaining a 3D structure. The shape of an object in an inspected luggage is used as a feature of a suspicious object in combination with a material property of the object. For example, a false alarm rate in detection of suspicious explosives may be reduced.

Abstract translation: 用于提取对象的形状特征的方法和安全检查方法和装置。 使用CT可以获得3D结构。 检查行李中的物体的形状被用作可疑物体的特征，与物体的材料属性相结合。 例如，可能会减少检测可疑炸药的误报率。

公开(公告)号：US20140185873A1

公开(公告)日：2014-07-03

申请号：US14136402

申请日：2013-12-20

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Mingliang Li ,  Zhiqiang Chen ,  Yuanjing Li ,  Li Zhang

IPC: G06K9/00

CPC classification number: G06K9/00201 ,  G06K2209/09

Abstract: A three-dimensional data processing and recognizing method including scanning and re-constructing an object to be detected so as to obtain three-dimensional data for recognition of the object to be detected; and extracting data matching to features from the three-dimensional data, so that the extracted data constitutes an interested target in order to display and recognize the object to be detected. A quick method to recognize an object to be detected, such as the shapes of cuboid, cylinder, and cutting tool, and so on.

Abstract translation: 一种三维数据处理和识别方法，包括扫描和重新构造待检测对象以获得用于识别待检测对象的三维数据; 并且从三维数据提取与特征匹配的数据，从而提取的数据构成感兴趣的目标，以便显示和识别待检测的对象。 识别待检测物体的快速方法，如长方体，圆柱体和切割工具的形状等。

公开(公告)号：US11938639B2

公开(公告)日：2024-03-26

申请号：US17333886

申请日：2021-05-28

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Zhiqiang Chen ,  Jin Cui ,  Bin Hu ,  Dong Lin ,  Huawei Wu

IPC: B25J9/16 ,  B25J13/08 ,  G01T1/16 ,  G08B21/18 ,  G08B21/22

CPC classification number: B25J9/1676 ,  B25J13/087 ,  G01T1/1606 ,  G08B21/182 ,  G08B21/22

Abstract: A boundary protection method and system of a radiation detection robot. The boundary protection method comprises: a first laser radar and a second laser radar are arranged diagonally, a first marking rod and a second marking rod are arranged diagonally; a boundary of an interlocking zone is defined by the first laser radar, the second laser radar, the first marking rod and the second marking rod; the object to be detected is placed in the interlocking zone; the radiation detection robot uses rays to detect the object to be detected in the interlocking zone; an early warning zone is provided outside the interlocking zone; wherein when it is detected that a person or object has intruded into the interlocking zone, the radiation detection robot stops emitting rays; and when it is detected that a person or object has intruded into the early warning zone, a warning is issued directly.

公开(公告)号：US11717589B2

公开(公告)日：2023-08-08

申请号：US17136781

申请日：2020-12-29

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Li Zhang ,  Zhiqiang Chen ,  Qingping Huang ,  Mingzhi Hong ,  Yue Li ,  Bo Li ,  Minghua Qiu ,  Yanhua Lu

IPC: A61L2/26 ,  A61L2/10

CPC classification number: A61L2/26 ,  A61L2/10 ,  A61L2202/11 ,  A61L2202/122

Abstract: A tray disinfection devices for a security inspection system can include a frame, a disinfection channel on the frame, and a conveyor on the frame. An ultraviolet disinfection lamp is arranged in the disinfection channel. The conveyor on the frame is configured to convey a tray to pass through the disinfection channel so as to disinfect the tray through an irradiation of the ultraviolet disinfection lamp.