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    Raman spectroscopy method of measuring melamine contents in dairy products having different matrixes
    21.
    发明授权
    Raman spectroscopy method of measuring melamine contents in dairy products having different matrixes 有权
    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

    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。

    THREE-DIMENSIONAL DATA PROCESSING AND RECOGNIZING METHOD
    23.
    发明申请
    THREE-DIMENSIONAL DATA PROCESSING AND RECOGNIZING METHOD 有权
    三维数据处理和识别方法

    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。

    Intelligent explosion-proof table
    27.
    发明授权
    Intelligent explosion-proof table 有权

    公开(公告)号：US11454483B2

    公开(公告)日：2022-09-27

    申请号：US16214677

    申请日：2018-12-10

    Applicant: Nuctech Company Limited ,  TSINGHUA UNIVERSITY

    Inventor： Li Zhang ,  Gang Peng ,  Qingping Huang ,  Jianqing Dou ,  Yandi Wang ,  Kun Yang

    IPC: F42D5/04 ,  G06Q50/26 ,  B64F1/36

    Abstract: The present disclosure provides an intelligent explosion-proof table, including a worktable, an explosion-proof box; the worktable has a window passing through in the vertical direction. The explosion-proof box with an open top is arranged under the window of the worktable. A lifting plate which can be moved up and down and a support mechanism for driving the lifting plate to be lifted are provided inside the explosion-proof box. The lifting plate is used for placing a danger source and matches with the window and is capable of being raised into the window.

    Scanned image correction apparatus, method and mobile scanning device
    29.
    发明授权
    Scanned image correction apparatus, method and mobile scanning device 有权

    公开(公告)号：US10948427B2

    公开(公告)日：2021-03-16

    申请号：US16231373

    申请日：2018-12-21

    Applicant: Tsinghua University ,  Nuctech Company Limited

    Inventor： Ke Li ,  Jianmin Li ,  Weifeng Yu ,  Yulan Li ,  Xuejing Yang ,  Yuanjing Li ,  Chunguang Zong ,  Zhiqiang Chen ,  Li Zhang

    IPC: G01N23/04

    Abstract: The present disclosure provides a scanned image correction apparatus, method and a mobile scanning device. The apparatus includes an image collector, an arm swing detector, and an image processor. The image collector is configured to collect a scanned image of an object under inspection during a scanning process of scanning the object under inspection by the mobile scanning device, and determine an image parameter of the scanned image. The arm swing detector is disposed at a monitor point on a detector arm of the mobile scanning device, and configured to detect a displacement offset of the detector arm in a specified direction and build an arm swing model of the detector arm. The image processor is configured to determine a change relationship between the image parameter of the scanned image and the displacement offset of the detector arm, and correct the scanned image based on the change relationship.

    X-ray detection system and method
    30.
    发明授权
    X-ray detection system and method 有权

    公开(公告)号：US10942290B2

    公开(公告)日：2021-03-09

    申请号：US16626169

    申请日：2019-05-16

    Applicant: Nuctech Company Limited

    Inventor： Li Zhang ,  Zhiqiang Chen ,  Yunda Sun ,  Xin Jin ,  Ming Chang ,  Xiaofei Xu

    IPC: G01N23/20091 ,  G01V5/00

    Abstract: The present application discloses an X-ray detection system and method. The detection system includes: a beam source generator, first detectors, a second detector, a collimating device and a processor. The first detectors and the second detector are alternately arranged in a transmission direction of an object to be detected. The beam source generator emits a plurality of columns of beam signals, wherein each column of beam signals comprises a plurality of beam signals; the first detectors receive a plurality of columns of transmitted beam signals passing through the object; the collimating device performs a specificity selection from a plurality of columns of scattered beam signals passing through the object; the second detector receives scattered beam signals selected by the collimating device; and the processor determines a detection result of the object according to the plurality of columns of transmitted beam signals and the selected scattered beam signals.

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