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11. 发明授权

US09250180B2 Raman spectrum measuring method for drug inspection 有权
标题翻译：用于药物检查的拉曼光谱测量方法
公开(公告)号：US09250180B2
公开(公告)日：2016-02-02
申请号：US14495233
申请日：2014-09-24
申请人： Nuctech Company Limited , Tsinghua University
发明人： Zhiqiang Chen , Li Zhang , Jianhong Zhang , Hongqiu Wang , Ziran Zhao , Yumin Yi , Jianping Gu , Qingping Huang
IPC分类号： G01J3/44 , G01N21/47 , G01N33/15 , G01N21/65
CPC分类号： G01N21/47 , G01J3/44 , G01N21/65 , G01N21/658 , G01N33/15
摘要： A raman spectrum measuring method for drug inspection is provided, comprising: measuring raman spectrum of a sample to be inspected to acquire an original raman spectrum curve of the sample; determining whether the original raman spectrum curve has a characterizing portion, and if not, measuring a mixture of the sample and an enhancing agent to acquire an enhanced raman spectrum curve of the sample; and if the original raman spectrum curve of the sample to be inspected has a characterizing portion, comparing the original raman spectrum curve of the sample with data in an original raman spectrum database of a drug to determine whether the sample contains the drug, otherwise, comparing the enhanced raman spectrum curve of the sample with data in an enhanced raman spectrum database of the drug to determine whether the sample to be inspected contains the drug.
摘要翻译：提供了用于药物检查的拉曼光谱测量方法，包括：测量被检样品的拉曼光谱以获得样品的原始拉曼光谱曲线; 确定原始拉曼光谱曲线是否具有特征部分，如果不是，则测量样品和增强剂的混合物以获得样品的增强的拉曼光谱曲线; 如果要检查的样本的原始拉曼光谱曲线具有特征部分，则将样品的原始拉曼光谱曲线与药物的原始拉曼光谱数据库中的数据进行比较，以确定样品是否含有药物，否则比较增强的拉曼光谱曲线的样品与增强的拉曼光谱数据库中的数据，以确定待检样品是否含有药物。

12. 发明申请

US20150085973A1 COMPUTED TOMOGRAPHY DEVICE BASED ON STRAIGHT TRAJECTORY AND X-RAY IMAGING DEVICE 有权
标题翻译：基于直线轨道和X射线成像装置的计算机图像设备
公开(公告)号：US20150085973A1
公开(公告)日：2015-03-26
申请号：US14494301
申请日：2014-09-23
申请人： NUCTECH COMPANY LIMITED , Tsinghua University
发明人： Mingliang Li , Zhiqiang Chen , Yuanjing Li , Jianmin Li , Li Zhang
IPC分类号： G01N23/04 , G21K1/02
CPC分类号： G01N23/046 , A61B6/032 , A61B6/035 , A61B6/06 , G01N2223/3301 , G01T1/2985 , G21K1/025
摘要： 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.
摘要翻译：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。

13. 发明授权

US08891081B1 Raman spectroscopy method of measuring melamine contents in dairy products having different matrixes 有权
标题翻译：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
申请人： Nuctech Company Limited , Tsinghua University
发明人： Zhiqiang Chen , Li Zhang , Jianhong Zhang , Hongqui Wang , Ziran Zhao , Jianping Gu , Zhiming Wang , Qingping Huang , Yumin Yi
IPC分类号： G01J3/44 , G01N21/65
CPC分类号： G01N21/65
摘要： 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.
摘要翻译：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。

14. 发明申请

US20140185923A1 METHODS FOR EXTRACTING SHAPE FEATURE, INSPECTION METHODS AND APPARATUSES 有权
标题翻译：提取形状特征的方法，检验方法和装置
公开(公告)号：US20140185923A1
公开(公告)日：2014-07-03
申请号：US14136462
申请日：2013-12-20
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Zhiqiang Chen , Li Zhang , Ziran Zhao , Qingping Huang , Qiang Li , Jianping Gu , Yunda Sun
IPC分类号： G06K9/00
CPC分类号： 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
摘要： 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.
摘要翻译：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。

15. 发明申请

US20140185873A1 THREE-DIMENSIONAL DATA PROCESSING AND RECOGNIZING METHOD 有权
标题翻译：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
申请人： Tsinghua University , Nuctech Company Limited
发明人： Mingliang Li , Zhiqiang Chen , Yuanjing Li , Li Zhang
IPC分类号： G06K9/00
CPC分类号： G06K9/00201 , G06K2209/09
摘要： 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.
摘要翻译：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。

16. 发明授权

US11614413B2 Back scattering inspection system and back scattering inspection method 有权
公开(公告)号：US11614413B2
公开(公告)日：2023-03-28
申请号：US17255968
申请日：2020-01-03
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED , NUCTECH (BEIJING) COMPANY LIMITED
发明人： Jianmin Li , Li Zhang , Yuanjing Li , Zhiqiang Chen , Hao Yu , Shangmin Sun , Bicheng Liu , Weizhen Wang , Dongyu Wang , Yuan Ma , Yu Hu , Chunguang Zong
IPC分类号： G01N23/20008 , G01N23/203
摘要： The present disclosure provides a back scattering inspection system and a back scattering inspection method. The back scattering inspection system includes a frame and a back scattering inspection device. The rack includes a track arranged vertically or obliquely relative to the ground, and a space enclosed by the track forms an inspection channel; and the back scattering inspection device includes a back scattering ray emitting device and a back scattering detector, and the back scattering inspection device is movably disposed on the track for inspecting an inspected object passing through the inspection channel. The back scattering inspection system can perform back scattering inspection on a plurality of surfaces of the inspected object.

17. 发明授权

US11454483B2 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
申请人： Nuctech Company Limited , TSINGHUA UNIVERSITY
发明人： Li Zhang , Gang Peng , Qingping Huang , Jianqing Dou , Yandi Wang , Kun Yang
IPC分类号： F42D5/04 , G06Q50/26 , B64F1/36
摘要： 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.

18. 发明申请

US20210330848A1 TRAY DISINFECTION DEVICE 有权
公开(公告)号：US20210330848A1
公开(公告)日：2021-10-28
申请号：US17136781
申请日：2020-12-29
申请人： Nuctech Company Limited , Tsinghua University
发明人： Li Zhang , Zhiqiang Chen , Qingping Huang , Mingzhi Hong , Yue Li , Bo Li , Minghua Qiu , Yanhua Lu
IPC分类号： A61L2/26 , A61L2/10
摘要： 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.

19. 发明授权

US10948427B2 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
申请人： Tsinghua University , Nuctech Company Limited
发明人： Ke Li , Jianmin Li , Weifeng Yu , Yulan Li , Xuejing Yang , Yuanjing Li , Chunguang Zong , Zhiqiang Chen , Li Zhang
IPC分类号： G01N23/04
摘要： 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.

20. 发明授权

US10896527B2 Method and device for reconstructing CT image and storage medium 有权
公开(公告)号：US10896527B2
公开(公告)日：2021-01-19
申请号：US16045303
申请日：2018-07-25
申请人： Tsinghua University , NUCTECH COMPANY LIMITED
发明人： Yuxiang Xing , Li Zhang , Jianmin Li , Zhiqiang Chen , Jianping Gu
IPC分类号： G06T11/00 , G06N5/04 , G06N3/04 , G06T5/00 , G06N3/08
摘要： A method and device for reconstructing a CT image and a storage medium are disclosed. CT scanning is performed on an object to be inspected to obtain projection data. The projection data is processed using a first convolutional neural network to obtain processed projection data. The first convolutional neural network comprises a plurality of convolutional layers. A back-projection operation is performed on the processed projection data to obtain a reconstructed image.

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