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21. 发明授权

US10663413B2 Inspection devices and methods for inspecting a container 有权
公开(公告)号：US10663413B2
公开(公告)日：2020-05-26
申请号：US15865520
申请日：2018-01-09
申请人： Nuctech Company Limited , Tsinghua University
发明人： Qiang Li , Jianping Gu , Bin Xu , Yaohong Liu , Ziran Zhao
IPC分类号： G01N23/046 , G01V5/00 , G01N23/041
摘要： A method for inspecting a container and an inspection device are disclosed. X-ray scanning is performed on the inspected container to obtain a scanned image. The scanned image is processed to obtain a region of interest. Features of texture units included in the region of interest are calculated. Local descriptions of the texture units are formed based on the features of the texture units. Distinction of each local point is calculated from a local description of each of the texture units so as to obtain a local distinct map of the region of interest. It is determined whether there is an article which is secretly carried in the inspected container using the local distinct map.

22. 发明授权

US10520402B2 Sample collecting and introducing device and detection system 有权
公开(公告)号：US10520402B2
公开(公告)日：2019-12-31
申请号：US16232062
申请日：2018-12-26
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Ge Li , Biao Cao , Jingli Xie , Xiaolin Zhao , Qiufeng Ma
IPC分类号： G01N1/24 , G01N1/22 , G01N1/40 , G01N30/30
摘要： The present disclosure relates to the technical field of safety detection, and in particular to a sample collecting and introducing device and a detection system. The sample collecting and introducing device provided by the present disclosure includes a sampling device for collecting a sample, and a semipermeable membrane device for extracting the sample collected by the sampling device and conveying the extracted sample to detection equipment, wherein the sampling device is provided with an air guide cavity, the air guide cavity is configured to guide airflow carrying the sample to flow to the semipermeable membrane device, the semipermeable membrane device is provided with a semipermeable membrane which is arranged outside the sampling device. In the present disclosure, the size of the semipermeable membrane is no longer limited by the sampling device, and therefore the difficulty of increasing the area of the semipermeable membrane is reduced.

23. 发明申请

US20180260959A1 INSPECTION APPARATUSES AND METHODS FOR SEGMENTING AN IMAGE OF A VEHICLE 审中-公开
公开(公告)号：US20180260959A1
公开(公告)日：2018-09-13
申请号：US15913222
申请日：2018-03-06
申请人： Tsinghua University , Nuctech Company Limited
发明人： Chuanhong Huang , Qiang Li , Jianping Gu , Yaohong Liu , Ziran Zhao
IPC分类号： G06T7/143
CPC分类号： G06T7/143 , G06T7/11 , G06T2207/10116 , G06T2207/20081 , G06T2207/20084 , G06T2207/30248
摘要： An inspection apparatus and a method for segmenting an Image of a vehicle are disclosed. An X-ray transmission scanning is performed on the vehicle to obtain a transmission image. Each pixel of the transmission image is labeled with a category tag, by using a trained convolutional network. Images of respective parts of the vehicle are determined according to the category tag for each pixel. With the above solutions, it is possible to segment the images of respective parts of a vehicle more accurately in the situations that are complicated or have large variety kinds of vehicles.

24. 发明授权

US09857317B2 X-ray fluoroscopic imaging system 有权
公开(公告)号：US09857317B2
公开(公告)日：2018-01-02
申请号：US14582069
申请日：2014-12-23
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Huaping Tang , Zhiqiang Chen , Chuanxiang Tang , Huaibi Chen , Yuanjing Li , Ziran Zhao , Yaohong Liu , Shangmin Sun , Xinshui Yan , Zhanfeng Qin
IPC分类号： G21K4/00 , G01N23/04 , G01V5/00 , G01T7/08 , G21K1/02
CPC分类号： G01N23/043 , G01T7/08 , G01V5/0033 , G01V5/0041 , G01V5/005 , G21K1/025
摘要： The X-ray fluoroscopic imaging system of the present invention comprises: an inspection passage; an electron accelerator; a shielding collimator apparatus comprising a shielding structure, and a first collimator for extracting a low energy planar sector X-ray beam and a second collimator for extracting a high energy planar sector X-ray beam which are disposed within the shielding structure; a low energy detector array for receiving the X-ray beam from the first collimator; and a high energy detector array for receiving the X-ray beam from the second collimator. The first collimator, the low energy detector array and the target point bombarded by the electron beam are located in a first plane; and the second collimator, the high energy detector array and the target point bombarded by the electron beam are located in a second plane.

25. 发明授权

US09843313B2 Apparatus and method for voltage alternating pulse output 有权
公开(公告)号：US09843313B2
公开(公告)日：2017-12-12
申请号：US14116074
申请日：2012-12-28
申请人： Nuctech Company Limited , Tsinghua University
发明人： Yaohong Liu , Chuanxiang Tang , Xinshui Yan , Wei Jia , Jianjun Gao , Jinsheng Liu , Wei Yin , Xiying Liu , Hao Shi
IPC分类号： H03K3/57 , H03K3/64 , H02M1/088 , H02M3/07
CPC分类号： H03K3/57 , H02M1/088 , H02M2003/077 , H03K3/64
摘要： The present invention provides a high voltage pulse modulating power source based on alternate group triggering, which comprises: a DC stabilized voltage source for supplying power to the high voltage pulse modulating power source; a plurality of solid-state switches; a plurality of triggers corresponding to said plurality of solid-state switches, wherein each trigger provides a trigger signal to its corresponding solid-state switch to turn on said corresponding solid-state switch, wherein said plurality of triggers are divided into at least two groups of triggers; a time sequence control module, which, at time t1, controls said plurality of triggers to generate trigger signals so as to turn on said plurality of solid-state switches simultaneously, and at time t2, controls one group of said at least two groups of triggers to generate trigger signals to turn on solid-state switches corresponding to this group of triggers, wherein time t1 and time t2 appear alternately.

26. 发明申请

US20170294118A1 VEHICLE IDENTIFICATION METHODS AND SYSTEMS 审中-公开
公开(公告)号：US20170294118A1
公开(公告)日：2017-10-12
申请号：US15300947
申请日：2015-12-23
申请人： Nuctech Company Limited , Tsinghua University
发明人： Zhiqiang Chen , Li Zhang , Jianmin Li , Ziran Zhao , Yaohong Liu , Qiang Li , Zheng Hu , Jianping Gu , Ying Li
IPC分类号： G08G1/054 , G08G1/017
CPC分类号： G08G1/054 , G01V5/0008 , G01V5/0016 , G06K9/4604 , G06K9/4642 , G08G1/015 , G08G1/017
摘要： Disclosed is a vehicle identification method and system. The method includes: acquiring appearance information of an inspected vehicle; obtaining external features of the vehicle based on the appearance information; acquiring a transmission image of the vehicle and obtaining internal features of the vehicle from the transmission image; forming descriptions on the vehicle at least based on the external features and the internal features; and determining a vehicle model of the vehicle from a vehicle model databased by utilizing the descriptions. This method merges various types of modality information, especially introducing the transmission image, and combines the internal structure information with the appearance information, so that the present disclosure can identify a vehicle model more practically.

27. 发明授权

US09426877B2 Standing wave electron linear accelerator with continuously adjustable energy 有权
标题翻译：驻波电子线性加速器具有连续可调的能量
公开(公告)号：US09426877B2
公开(公告)日：2016-08-23
申请号：US14137262
申请日：2013-12-20
申请人： Tsinghua University , Nuctech Company Limited
发明人： Chuanxiang Tang , Zhe Zhang , Qingxiu Jin , Jiaru Shi , Huaibi Chen , Wenhui Huang , Shuxin Zheng , Yaohong Liu
IPC分类号： H05H9/04 , H05G2/00 , H05H7/12 , H05H7/22 , H05G1/32
CPC分类号： H05H9/04 , H05G1/32 , H05G2/00 , H05H7/12 , H05H7/22 , H05H9/048
摘要： A standing wave electron linear accelerating apparatus and a method thereof are disclosed. The apparatus comprises an electron gun configured to generate electron beams; a pulse power source configured to provide a primary pulse power signal; a power divider coupled downstream from the pulse power source and configured to divide the primary pulse power signal outputted from the pulse power source into a first pulse power signal and a second pulse power signal; a first accelerating tube configured to accelerating the electron beams with the first pulse power signal; a second accelerating tube configured to accelerate the electron beams with the second pulse power signal; a phase shifter configured to continuously adjust a phase difference between the first pulse power signal and the second pulse power signal so as to generate accelerated electron beams with continuously adjustable energy at output of the second accelerating tube.
摘要翻译：公开了一种驻波电子线性加速装置及其方法。该装置包括配置成产生电子束的电子枪; 脉冲电源，被配置为提供初级脉冲功率信号; 耦合到所述脉冲电源的下游并被配置为将从所述脉冲电源输出的所述主脉冲功率信号划分为第一脉冲功率信号和第二脉冲功率信号的功率分配器; 第一加速管，被配置为用第一脉冲功率信号加速电子束; 第二加速管，被配置为用所述第二脉冲功率信号加速所述电子束; 移相器，被配置为连续地调节第一脉冲功率信号和第二脉冲功率信号之间的相位差，以便在第二加速管的输出处产生具有连续可调能量的加速电子束。

28. 发明申请

US20160046861A1 PROCESS FOR THE PREPARATION OF GADOLINIUM OXYSULFIDE (Gd2O2S) SCINTILLATION CERAMICS 有权
标题翻译：氧化钆（Gd2O2S）激光陶瓷的制备方法
公开(公告)号：US20160046861A1
公开(公告)日：2016-02-18
申请号：US14827258
申请日：2015-08-14
申请人： Tsinghua University , Nuctech Company Limited
发明人： Yanchun WANG , Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Jianping Chang , Shuqing Zhao , Wenjian Zhang , Yongqiang Wang
IPC分类号： C09K11/77 , C04B40/00 , C04B35/645
CPC分类号： C09K11/7772 , C04B35/5156 , C04B35/547 , C04B35/6261 , C04B35/64 , C04B35/645 , C04B35/6455 , C04B40/0007 , C04B2235/3203 , C04B2235/3224 , C04B2235/3229 , C04B2235/3287 , C04B2235/445 , C04B2235/5436 , C04B2235/5481 , C04B2235/6565 , C04B2235/6567 , C04B2235/6581 , C04B2235/661 , C04B2235/662 , C04B2235/666 , C04B2235/72 , C04B2235/77 , C04B2235/9653
摘要： The present disclosure is directed to a rapid process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics by using the combination of spark plasma primary sintering (SPS) and hot isostatic pressing secondary sintering.
摘要翻译：本公开涉及通过使用火花等离子体一次烧结（SPS）和热等静压二次烧结的组合制备具有通式Gd 2 O 2 S（称为GOS）闪烁陶瓷的通式Gd 2 O 2 S的快速方法。

29. 发明授权

US11215626B2 Gate system for sample detection and method of sample inspection 有权
公开(公告)号：US11215626B2
公开(公告)日：2022-01-04
申请号：US16406272
申请日：2019-05-08
申请人： TSINGHUA UNIVERSITY , Nuctech Company Limited
发明人： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Qiufeng Ma , Lili Yan , Weiping Zhu , Biao Cao
IPC分类号： G01N35/04 , G01N25/54 , G01N35/10 , G01N35/00 , G01N1/02
摘要： The present disclosure provides a gate system for sample detection and a method of sample inspection, which relate to the field of detection and analysis technology. The gate system comprises: an accommodating apparatus configured to accommodate an inserted ticket to be detected; a wipe sampling apparatus including a wipe sampling belt which is configured to drive the ticket to be detected to move within the accommodating apparatus and to conduct a wipe sampling to the ticket; an inspiratory sampling apparatus configured to collect samples dropped from the wipe sampling apparatus; and a detection apparatus configured to detect the samples and output detection results. The gate system for sample detection and the method of sample inspection provided by the present disclosure have a wide range of applications and can perform rapid sampling and detection to those substances that are difficult to be volatilized.

30. 发明授权

US11193860B2 Gas purifying device and ion migration spectrometer 有权
公开(公告)号：US11193860B2
公开(公告)日：2021-12-07
申请号：US16314063
申请日：2018-12-10
申请人： Nuctech Company Limited , Tsinghua University
发明人： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Lili Yan , Ge Li , Qiufeng Ma
IPC分类号： G01N1/34 , G01N1/22 , G01N1/44 , G01N27/622
摘要： Embodiments of the present disclosure provide a gas purifying device and an ion migration spectrometer. The gas purifying device includes a first purificant vessel, a second purificant vessel and a valve communicated between the first purificant vessel and the second purificant vessel. The valve is configured to allow a gas flows from the second purificant vessel to the first purificant vessel in a first state and to permit the gas to flow from the first purificant vessel to the second purificant vessel in a second state.

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