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1. 发明申请

US20210215582A1 GAS PURIFYING DEVICE AND ION MIGRATION SPECTROMETER 有权
公开(公告)号：US20210215582A1
公开(公告)日：2021-07-15
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 , G01N1/44 , G01N27/622 , G01N1/22
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.

2. 发明申请

US20190206095A1 IMAGE PROCESSING METHOD, IMAGE PROCESSING DEVICE AND STORAGE MEDIUM 审中-公开
公开(公告)号：US20190206095A1
公开(公告)日：2019-07-04
申请号：US16235882
申请日：2018-12-28
申请人： Tsinghua University , NUCTECH COMPANY LIMITED
发明人： Yuxiang XING , Kaichao LIANG , Le SHEN , Li ZHANG , Hongkai YANG , Kejun KANG , Zhiqiang CHEN , Jianmin LI , Yinong LIU
IPC分类号： G06T11/00 , G06N3/08
CPC分类号： G06T11/003
摘要： An image processing method, comprising: acquiring, by a CT scanning system, projection data of an object; and processing, by using a convolutional neural network, the projection data, to acquire an estimated image of the object. The convolutional neural network comprises: a projection domain network for processing input projection data to obtain estimated projection data; an analytical reconstruction network layer for performing analytical reconstruction to obtain a reconstructed image; an image domain network for processing the reconstructed image to obtain an estimated image, a projection layer for performing a projection operation by using a system projection matrix of the CT scanning system, to obtain a projection result of the estimated image; and a statistical model layer for determining consistency among the input projection data, the estimated projection data, and the projection result of the estimated image based on a statistical model.

3. 发明申请

US20190204469A1 VEHICLE-MOUNTED TYPE BACK SCATTERING INSPECTION SYSTEM 审中-公开
公开(公告)号：US20190204469A1
公开(公告)日：2019-07-04
申请号：US16234632
申请日：2018-12-28
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Hao YU , Ying LI , Weizhen WANG , Quanwei SONG , Dongyu WANG , Haojie CHI , Jianmin LI , Yulan LI , Chunguang ZONG , Zhiqiang CHEN , Yuanjing LI , Li ZHANG
IPC分类号： G01V5/00 , G01N23/203
CPC分类号： G01V5/0025 , G01N23/203
摘要： The present disclosure discloses a vehicle-mounted type back scattering inspection system. The vehicle-mounted type back scattering inspection system includes a carriage and a back scattering imaging device, the scanning range of the back scattering imaging device is variable. As the scanning range of the back scattering imaging device of the present disclosure is variably set, the inspection range of the back scattering imaging device can be expanded.

4. 发明申请

US20190193691A1 FORK-ARM LIFT TRACTOR 审中-公开
公开(公告)号：US20190193691A1
公开(公告)日：2019-06-27
申请号：US16233398
申请日：2018-12-27
申请人： TSINGHUA UNIVERSITY , Nuctech Company Limited
发明人： Yuan HE , Jianmin LI , Hongqi LI , Yulan LI , Qiangqiang WANG , Yuanjing LI , Zhiqiang CHEN , Li ZHANG
IPC分类号： B60S13/00
CPC分类号： B60S13/00 , B60S5/00 , B62D49/02 , B62D49/0692
摘要： A fork-arm lift tractor includes a vehicle body, a supporting plate disposed above the vehicle body, a lifting device for driving the supporting plate to be lifted, a front and rear fork-arm assemblies, a front and rear fork-arm drive assemblies. The front fork-arm assembly includes two front fork-arms rotatably disposed at the supporting plate. The rear fork-arm assembly includes two rear fork-arms rotatably disposed at the supporting plate, and the front and rear fork-arms may be deployed or retracted from both sides of the supporting plate. The front fork-arm driving assembly includes a front transmission part, and a front power device disposed at the supporting plate and may drive the front transmission part to move horizontally linearly so as to rotate the two front fork-arms. The rear fork-arm driving assembly has almost the same structure of the front fork-arm driving assembly and is used to rotate the two rear fork-arms.

5. 发明申请

US20170329038A1 METHOD, APPARATUS AND SYSTEM FOR INSPECTING OBJECT BASED ON COSMIC RAY 审中-公开
公开(公告)号：US20170329038A1
公开(公告)日：2017-11-16
申请号：US15411348
申请日：2017-01-20
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun KANG , Zhiqiang CHEN , Yuanjing LI , Ziran ZHAO , Junli LI , Xuewu WANG , Yaohong LIU , Zhi ZENG , Jianping GU , Song LIANG , Bicheng LIU , Guangming XU , Yongqiang WANG
IPC分类号： G01V5/00
CPC分类号： G01V5/0016 , G01N2223/205 , G01T1/167 , G01T5/002 , G01T5/02 , G01V5/0025 , G01V5/0075 , G01V5/0091 , G06K9/6267
摘要： The present application relates to a method, apparatus and system for inspecting an object based on a cosmic ray, pertaining to the technical field of radiometric imaging and safety inspection. The method includes: recording a movement trajectory of an inspected object by using a monitoring device; acquiring information of charged particles in the cosmic ray by using a position-sensitive detector, the information of charged particles comprising trajectory information of the charged particles; performing position coincidence for the movement trajectory and the trajectory information to determine the object; performing trajectory remodeling for the charged particles according to the information of charged particles; and identifying a material inside the moving object according to the trajectory remodeling. According to the present disclosure, pedestrians who are walking and moving are inspected by using the cosmic ray, and nuclear materials, drugs and explosive materials and the like carried by human bodies may be detected.

6. 发明申请

US20170309043A1 DUAL-ENERGY RAY IMAGING METHODS AND SYSTEMS 审中-公开
公开(公告)号：US20170309043A1
公开(公告)日：2017-10-26
申请号：US15129455
申请日：2015-12-23
申请人： Tsinghua University , NUCTECH COMPANY LIMITED
发明人： Liang LI , Zhiqiang CHEN , Kejun KANG , Li ZHANG , Ziran ZHAO , Yuxiang XING , Yongshun XIAO , Jianping GU , Juan ZHENG
IPC分类号： G06T11/00 , G06T7/00
CPC分类号： G06T11/003 , G01N23/04 , G06T7/0002 , G06T11/008 , G06T2207/10081 , G06T2207/30112 , G06T2211/408
摘要： Disclosed is a dual-energy ray imaging method and system. The method comprises: calculating the mass thicknesses of the materials in the overlapped area of two materials by using a calibrated surface fitting method, and then decomposing a pair of original high-energy and low-energy data for this pixel into two high-low-energy data sets corresponding to the two materials, and finally calculating and acquiring the composition result of different materials for each pixel. The disclosure is especially advantageous in that the problem of error recognition of materials due to the two overlapped materials can be eliminated and the stratified imaging of multiple materials can be achieved, thereby improving the accuracy of the substance recognition and reducing the rate of false positive and false negative which is very important to the applications in the field of security check and anti-smuggling.

7. 发明申请

US20150378047A1 DETECTOR DEVICE, DUAL ENERGY CT SYSTEM AND DETECTION METHOD USING THE SYSTEM 有权
标题翻译：检测器装置，双能量CT系统和使用该系统的检测方法
公开(公告)号：US20150378047A1
公开(公告)日：2015-12-31
申请号：US14748407
申请日：2015-06-24
申请人： Tsinghua University , Nuctech Company Limited
发明人： Zhiqiang CHEN , Li ZHANG , Xin JIN , Qingping HUANG , Le SHEN , Yunda SUN
IPC分类号： G01V5/00 , G01T7/08
CPC分类号： G01V5/0041 , A61B6/4266 , G01T1/202 , G01T1/362 , G01T7/08 , G01V5/005
摘要： The present disclosure discloses a detector device comprising a plurality of detector assemblies. Each detector assembly comprises at least one detection crystal units having a first energy response and those having a second energy response, which are both arranged along a first direction at intervals, each detection crystal unit having a first/second energy response including at least one detection crystals having a first/second energy response arranged along a second direction. The at least one detection crystal units having a first energy response and the at least one detection crystal units having a second energy response are, at least partially, alternatively arranged along the first direction when viewed from an incidence direction of the X-ray. The present disclosure also discloses a dual energy CT system having the detector device and a CT detection method using this system.
摘要翻译：本公开公开了一种包括多个检测器组件的检测器装置。每个检测器组件包括具有第一能量响应的至少一个检测晶体单元和具有第二能量响应的检测晶体单元，它们都沿着第一方向间隔排列，每个检测晶体单元具有包括至少一个检测的第一/第二能量响应具有沿第二方向布置的第一/第二能量响应的晶体。当从X射线的入射方向观察时，具有第一能量响应的至少一个检测晶体单元和具有第二能量响应的至少一个检测晶体单元至少部分地沿第一方向布置。本公开还公开了一种具有检测器装置和使用该系统的CT检测方法的双能CT系统。

8. 发明申请

US20140093152A1 METHODS AND DEVICES FOR LOCATING OBJECT IN CT IMAGING 有权
标题翻译：用于定位CT成像对象的方法和设备
公开(公告)号：US20140093152A1
公开(公告)日：2014-04-03
申请号：US14037236
申请日：2013-09-25
申请人： Nuctech Company Limited , Tsinghua University
发明人： Liang LI , Li ZHANG , Zhiqiang CHEN , Ziran ZHAO , Yuxiang XING , Yongshun XIAO , Qingli WANG
IPC分类号： G06T7/00
CPC分类号： G06T7/004 , A61B6/4085 , A61B6/466 , A61B6/469 , A61B6/5258 , G06T7/0012 , G06T7/55 , G06T7/70 , G06T11/006 , G06T2211/421 , G06T2211/436 , G16H40/63
摘要： The present disclosure provides methods and devices for locating a plurality of interested objects in CT imaging. Location of the interested objects in the three-dimensional space can be determined by using three projection images that are substantially perpendicular to each other. The method can rapidly locate interested objects in a CT image without pre-reconstruction of the CT image even if there are a plurality of interested objects in the field of view. The algorithm does not involve interactive steps. The method is rapid and effective, and thus applicable to industrial applications.
摘要翻译：本公开提供了用于在CT成像中定位多个感兴趣对象的方法和装置。可以通过使用基本上彼此垂直的三个投影图像来确定兴趣对象在三维空间中的位置。即使在视野中存在多个感兴趣的对象，该方法也可以快速定位CT图像中的感兴趣的对象，而无需对CT图像进行预重建。该算法不涉及交互式步骤。该方法快速有效，适用于工业应用。

9. 发明申请

US20220099601A1 RADIATION INSPECTION APPARATUS AND RADIATION INSPECTION METHOD 有权
公开(公告)号：US20220099601A1
公开(公告)日：2022-03-31
申请号：US17420681
申请日：2020-01-03
申请人： NUCTECH (BEIJING) COMPANY LIMITED , NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Zhiqiang CHEN , Yuanjing LI , Li ZHANG , Jianmin LI , Shangmin SUN , Chunguang ZONG , Yu HU , Quanwei SONG , Hejun ZHOU , Weifeng YU , Jinguo CAO , Bing FU
IPC分类号： G01N23/10 , G01N23/04 , G01N23/083
摘要： The present disclosure provides a radiation inspection apparatus and a radiation inspection method. The radiation inspection apparatus includes: a radiation inspection device comprising a ray source and a detector that cooperates with the ray source to perform scanning inspection on an object to be inspected, the radiation inspection device having an inspection channel for the object to be inspected to pass through when scanning inspection is performed thereon; and traveling wheels provided at the bottom of the radiation inspection device to enable the radiation inspection apparatus to travel in an extension direction of the inspection channel, and the traveling wheels are configured to rotate 90° to enable the radiation inspection apparatus to travel in a direction perpendicular to the extension direction of the inspection channel.

10. 发明申请

US20210048376A1 SAMPLING PROBE, AUTOMATIC SAMPLING DEVICE, AND CONTAINER DETECTION SYSTEM 有权
公开(公告)号：US20210048376A1
公开(公告)日：2021-02-18
申请号：US16989123
申请日：2020-08-10
申请人： NUCTECH COMPANY LIMITED , Tsinghua University
发明人： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Jianmin LI , Shangmin SUN , Yaohong LIU , Weiping ZHU , Qiufeng MA , Ge LI , Biao CAO , Zheng LIANG , Ying LI , Yu HU
IPC分类号： G01N1/24 , G01N27/62
摘要： A sampling probe, an automatic sampling device, and a container detection system are provided. The sampling probe includes: a mounting base; a housing mounted on the mounting base, a first accommodation chamber having an opening being defined in the housing, and an exhaust hole in communication with the first accommodation chamber and outside of the housing being formed in the housing; a coupling portion formed on an outer edge of the opening of the first accommodation chamber and formed to be hermetically coupled with an air outlet of a container; and a suction device mounted on the housing and configured to suck gas in the container into the first accommodation chamber through the air outlet. The sampling probe may collect the odor of toxic and harmful gases/hazardous chemicals inside the container at the air outlet of the container, without destroying the overall structure of the container.

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