公开(公告)号：US20170176351A1

公开(公告)日：2017-06-22

申请号：US15257595

申请日：2016-09-06

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Tianyi YANG DAI ,  Ji ZHAO ,  Xin JIN ,  Ming CHANG

IPC: G01N23/04 ,  G01N23/20 ,  G21K1/02

CPC classification number: G01N23/046 ,  G01N23/20 ,  G01N23/20083 ,  G01N2223/056 ,  G01N2223/316 ,  G01N2223/419 ,  G01N2223/637 ,  G01V5/0016 ,  G01V5/005 ,  G21K1/02

Abstract: Systems and methods for liquid detection are disclosed. An illustrative method for liquid detection herein may include implementing CT imaging and XRD imaging on one or more liquid planes of liquid contained in a container at once by rotating the container so that X-rays from a same radiation source scan a whole area of each of the one or more liquid planes, and generating a substance identification result for the liquid contained in the container based on a CT image and a XRD image, wherein the CT imaging and the XRD imaging are implemented on a same liquid plane or different liquid planes. Consistent with various aspects and features, implementations may identify substances contained in the liquid more quickly and accurately.

公开(公告)号：US20170138914A1

公开(公告)日：2017-05-18

申请号：US15276595

申请日：2016-09-26

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Weiping ZHU ,  Yaohong LIU ,  Qiufeng MA ,  Xiang ZOU ,  Huishao HE ,  Jianping CHANG ,  Song LIANG

IPC: G01N30/72 ,  G01N23/06 ,  G01B15/00

Abstract: A darkroom type security inspection apparatus and a method of performing an inspection using the darkroom type security inspection apparatus. An apparatus includes a housing constituting a closed darkroom, and assemblies disposed inside the housing. The assemblies disposed inside the housing include: a sample collecting unit configured to collect a sample, a conveyor unit, and a X-ray detection unit to detect a position of the objected to be inspected, wherein the X-ray detection unit is configured to determine the position of the objected to be inspected within the sampling assembly so that the object to be inspected together with the conveyor unit is conveyed to an expected position; and a sample processing assembly, wherein the assemblies disposed inside the housing are communicated by fittings or connectors.

公开(公告)号：US20170024862A1

公开(公告)日：2017-01-26

申请号：US15217613

申请日：2016-07-22

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Kejun KANG ,  Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Ziran ZHAO ,  Yaohong LIU ,  Jianping GU ,  Zhiming WANG

IPC: G06T5/00 ,  G06T7/40 ,  G06T7/00

CPC classification number: G06T5/003 ,  G06T7/00 ,  G06T2207/10116 ,  G06T2207/20021 ,  G06T2207/20076 ,  G06T2207/30168

Abstract: The present disclosure relates to a method and device for estimating a point spread function. In one implementation, a method includes capturing, by a scanning device, an image by scanning a plurality of rectangle blocks which are same sized and closely arranged, wherein the plurality of rectangle blocks are made of different materials and/or have different mass thicknesses, and an incident direction of rays is perpendicular to a scanning direction and a surface of the plurality of rectangle blocks arranged closely during scanning; obtaining line spread functions for two directions along a length side and a width side of each of the rectangle blocks based on the scanned image, and obtaining standard deviation parameters of the line spread functions; and combining the standard deviation parameters for the two directions to obtain a two dimensional Point Spread Function (PSF) parameter so as to estimate the point spread function.

Abstract translation: 本公开涉及一种用于估计点扩散函数的方法和装置。 在一个实现中，一种方法包括通过扫描与尺寸相同并且紧密排列的多个矩形块来扫描图像，其中多个矩形块由不同的材料制成和/或具有不同的质量厚度， 并且光线的入射方向垂直于扫描方向，并且所述多个矩形块的表面在扫描期间被紧密排列; 基于扫描图像，沿矩形块的长度侧和宽度侧的两个方向获得线扩展函数，并获得线扩展函数的标准偏差参数; 并组合两个方向的标准偏差参数以获得二维点扩展函数（PSF）参数，以估计点扩散函数。

公开(公告)号：US20170023697A1

公开(公告)日：2017-01-26

申请号：US15217787

申请日：2016-07-22

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Ziran ZHAO ,  Yaohong LIU ,  Juan ZHENG ,  Jianping GU ,  Chunguang ZONG

IPC: G01V5/00

CPC classification number: G01V5/0041 ,  G01N23/04 ,  G01N23/046 ,  G01N23/06 ,  G01N23/083 ,  G01N23/087 ,  G01N23/10 ,  G01V5/0016 ,  G01V5/005 ,  G01V5/12

Abstract: Disclosed is a method and device for estimating weight of an object to be inspected in an inspection system. An effective atomic number and a high-energy gray value of the dual-energy corresponding to each pixel of the object to be inspected are obtained by a dual-energy radiation scanning. A mass-thickness value for a corresponding pixel is obtained from a pre-created mass-thickness attenuation curve by utilizing the effective atomic numbers and the high-energy gray value of the dual-energy for respective pixels. Weight information for at least a part of the object to be inspected is calculated by multiplying the mass-thickness value by the area of the pixel. Such a method may accurately calculate the weight of the object to be inspected and save the cost for a conventional weighing hardware.

Abstract translation: 公开了一种用于在检查系统中估计被检查物体的重量的方法和装置。 通过双能量辐射扫描获得与待检测对象的每个像素相对应的双能量的有效原子序数和高能灰度值。 通过利用有效原子序数和相应像素的双能量的高能量灰度值，从预先创建的质量厚度衰减曲线获得相应像素的质量厚度值。 通过将质量厚度值乘以像素的面积来计算待检查对象的至少一部分的重量信息。 这种方法可以精确地计算待检查物体的重量并节省常规称重硬件的成本。

公开(公告)号：US20160253822A1

公开(公告)日：2016-09-01

申请号：US14981947

申请日：2015-12-29

Applicant: NUCTECH COMPANY LIMITED

Inventor： Mingliang LI ,  Yuanjing LI ,  Jianmin Li ,  Ying LI ,  Zhiqiang CHEN ,  Kejun KANG

IPC: G06T7/20 ,  H04N5/247

CPC classification number: H04N5/247 ,  G01B11/04 ,  G01C11/06 ,  G01P3/68 ,  G06T7/292 ,  G06T7/60 ,  G06T2207/10016 ,  G06T2207/30236 ,  G06T2207/30248

Abstract: The present invention relates to a photogrammetry system and method. The photogrammetry system comprises: photographing devices capable of photographing an object at a predetermined time interval; and, a data processing device capable of calculating an actual length of the object or a certain portion on the object according to a length of the object or a certain portion on the object in the images obtained by the photographing devices and a distance of the object in the two images, wherein the object moves at a speed V; the photographing devices photograph the object for two times at a time interval t; the distance of the object in the two images obtained by the two times of photographing is Dp; the length of the object or a certain portion on the object in the images is Lp; and, the actual length L of the object or a certain portion on the object may be obtained by the following formula: L = Lp × Vt Dp .

Abstract translation: 本发明涉及摄影测量系统和方法。 摄影测量系统包括：拍摄能够以预定时间间隔拍摄对象的装置; 以及数据处理装置，其能够根据由拍摄装置获得的图像中的物体或物体上的某一部分的长度和物体的距离来计算物体或物体上的某一部分的实际长度 在两个图像中，其中物体以速度V移动; 拍摄装置以时间间隔t拍摄对象两次; 通过两次拍摄获得的两张图像中的物体的距离为Dp; 图像中对象或对象上某一部分的长度为Lp; 并且物体的实际长度L或物体上的某个部分可以通过以下公式获得：L = Lp×Vt Dp。

公开(公告)号：US20160189945A1

公开(公告)日：2016-06-30

申请号：US14985219

申请日：2015-12-30

Applicant: Nuctech Company Limited

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Weiping ZHU ,  Huishao HE ,  Qiufeng MA ,  Yaohong LIU ,  Xiang ZOU ,  Jianping CHANG

IPC: H01J49/04 ,  G01N27/62 ,  G01N30/14

CPC classification number: H01J49/0422 ,  G01N30/14 ,  G01N30/16 ,  G01N30/20

Abstract: A sample introduction device comprises a sampling unit, a gas suction pump, adsorption units, a piston cylinder and a desorption cylinder that comprises a desorption chamber, a carrier-gas inlet, a split/purge vent and an analyzer nozzle communicating with the desorption chamber. A heating film and a temperature sensor are provided on outer wall of the desorption cylinder. The piston cylinder above the desorption cylinder comprises two piston chambers, each of which is provided with the adsorption unit and in communication with the desorption chamber. The piston cylinder comprises a sample-gas inlet connected to the sampling unit and a gas-suction-pump orifice connected to the gas suction pump, each of which can communicate with both piston chambers. Each adsorption unit comprises an adsorption cylinder-like screen for holding adsorbents and a piston rod slidably mounted in the piston chamber. Each adsorption cylinder-like screen can simultaneously communicate with the sample-gas inlet and gas-suction-pump orifice.

Abstract translation: 样品引入装置包括取样单元，气体抽吸泵，吸附单元，活塞缸和解吸筒，其包括解吸室，载气入口，分流/排气口和与解吸室连通的分析器喷嘴 。 在解吸筒的外壁上设置加热膜和温度传感器。 解吸筒上方的活塞筒包括两个活塞室，每个活塞室设有吸附单元并与解吸室连通。 活塞气缸包括连接到取样单元的样品气体入口和连接到气体抽吸泵的气体抽吸泵孔，每个气体吸入泵可与两个活塞室连通。 每个吸附单元包括用于保持吸附剂的吸附缸状筛网和可滑动地安装在活塞室中的活塞杆。 每个吸附圆筒状筛网可同时与样品气体入口和吸气泵孔口连通。

公开(公告)号：US20160084775A1

公开(公告)日：2016-03-24

申请号：US14837205

申请日：2015-08-27

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Kejun KANG ,  Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Ziran ZHAO ,  Yaohong LIU ,  Jianping GU ,  Liang LI ,  Yuxiang XING

IPC: G01N23/04

CPC classification number: G01N23/046 ,  G01V5/005

Abstract: The present disclosure provides a low-angle self-swinging type computed tomography (CT) apparatus, which is provided with an X-ray accelerator and a plurality of rows of detectors and is configured to include a slip ring, such that the slip ring with the accelerator and the detectors thereon is capable of performing a single-pendulum reciprocating movement while an objected to be inspected passes through the slip ring, a three dimension CT image of the object is displayed, thereby achieving accurate inspection for large-scale objects, such as van containers.

Abstract translation: 本公开提供了一种低角度自摆式计算机断层摄影（CT）装置，其设置有X射线加速器和多排检测器，并且构造成包括滑环，使得滑环具有 加速器和其上的检测器能够在被检查对象通过滑环的同时执行单摆往复运动，显示对象的三维CT图像，从而实现对大型物体的精确检查，例如 作为集装箱。

公开(公告)号：US20160061989A1

公开(公告)日：2016-03-03

申请号：US14841991

申请日：2015-09-01

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun KANG ,  Jingyu GU ,  Zhiqiang CHEN ,  Jianmin LI ,  Yuanjing LI ,  Yulan LI ,  Dongyu WANG

IPC: G01V5/00

CPC classification number: G01V5/0066 ,  G01V5/0016

Abstract: A vehicle-mounted inspection system comprises: a chassis; a rotation mechanism disposed on the chassis; a first ray emission device connected to the rotation mechanism and configured to emit a ray; a first detection device connected to the rotation mechanism and configured to receive the ray emitted by the first ray emission device; and a second ray emission device connected to the rotation mechanism and configured to emit a ray. The rotation mechanism is configured to rotate the first ray emission device, the first detection device and the second ray emission device substantially around an upright axis between a retracted position and an operating position.

Abstract translation: 车载检查系统包括：底盘; 设置在所述底盘上的旋转机构; 连接到所述旋转机构并被配置为发射光线的第一射线发射装置; 连接到所述旋转机构并被配置为接收由所述第一射线发射装置发射的射线的第一检测装置; 以及连接到所述旋转机构并被配置为发射光线的第二射线发射装置。 旋转机构构造成使第一射线发射装置，第一检测装置和第二射线发射装置基本上在缩回位置和操作位置之间的直立轴线周围旋转。

公开(公告)号：US20150371809A1

公开(公告)日：2015-12-24

申请号：US14729622

申请日：2015-06-03

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Fuhua DING ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Wanlong WU ,  Le TANG ,  Yingkang JIN ,  Yanjie WEN

IPC: H01J35/12 ,  G21K1/04 ,  H05G1/12

CPC classification number: H01J35/12 ,  G21K1/043 ,  G21K1/046 ,  H01J2235/1287 ,  H05G1/12

Abstract: The present disclosure provides an X-ray generator with adjustable collimation. The X-ray generator comprises: an assembly of X-ray source, which includes an X-ray tube having a cathode and an anode and a front collimator; a high voltage generator, which is disposed in an extended chamber of a housing for the X-ray tube and which is used for supplying a direct current high voltage between the cathode and the anode of the X-ray tube to excite X-ray beams; a collimation adjustment unit, which is rotatably disposed outside of the front collimator and which is used for adjusting fan-type X-ray beams into continuous pencil-type X-ray beams; and a cooling unit, which is independently mounted to the X-ray tube and which is used for cooling the anode of the X-ray tube; wherein, the assembly of X-ray source, the high voltage generator, the collimation adjustment unit and the cooling unit are integrated as a whole. The X-ray generator with adjustable collimation according to the disclosure has a compact construction, which is helpful in miniaturization, modularization and high efficiency of a security detection equipment.

Abstract translation: 本公开提供了具有可调整准直的X射线发生器。 X射线发生器包括：X射线源的组件，其包括具有阴极和阳极的X射线管和前准直器; 高电压发生器，其设置在用于X射线管的壳体的延伸室中，用于在X射线管的阴极和阳极之间提供直流高电压，以激发X射线束 ; 准直调整单元，其可旋转地设置在前准直仪的外侧，用于将风扇型X射线束调整为连续的铅笔型X射线束; 以及冷却单元，其独立地安装到所述X射线管并且用于冷却所述X射线管的阳极; 其中，X射线源，高压发生器，准直调节单元和冷却单元的组合整体集成。 根据本公开的具有可调准直的X射线发生器具有紧凑的结构，这有助于安全检测设备的小型化，模块化和高效率。

公开(公告)号：US20150206326A1

公开(公告)日：2015-07-23

申请号：US14540413

申请日：2014-11-13

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Ziran ZHAO ,  Li ZHANG ,  Zhiqiang CHEN ,  Shuo WANG ,  Jianping GU ,  Yunda SUN

IPC: G06T11/00 ,  G06T15/06 ,  G06T15/04 ,  G06T15/80 ,  G06T7/00 ,  G06T15/08 ,  G06T15/40 ,  G06T3/40 ,  G06T15/20 ,  G06T1/20 ,  G06T1/00 ,  G06T15/60

CPC classification number: G06T1/0007 ,  G06T1/20 ,  G06T3/403 ,  G06T11/001 ,  G06T11/008 ,  G06T15/04 ,  G06T15/06 ,  G06T15/08 ,  G06T15/205 ,  G06T15/405 ,  G06T15/60 ,  G06T15/80 ,  G06T2200/04 ,  G06T2200/08 ,  G06T2200/28 ,  G06T2207/10072 ,  G06T2207/10081 ,  G06T2210/04 ,  G06T2215/12 ,  G06T2219/2008

Abstract: The present disclosure provides a method for rendering of CT image data. The method includes acquiring 2D image data of a background and 2D image data of a target; rendering the 2D image data of the target into a 3D image of the target to obtain a first hit position of a ray; rendering the 2D image data of the background into a 3D image of the background; adjusting the 3D image of the background based on the first hit position; and synthetically rendering the 3D image of the background and the 3D image of the target. The present disclosure also provides apparatus for implementing the method.

Abstract translation: 本公开提供了一种用于呈现CT图像数据的方法。 该方法包括获取背景的2D图像数据和目标的2D图像数据; 将目标的2D图像数据呈现为目标的3D图像，以获得射线的第一命中位置; 将背景的2D图像数据呈现为背景的3D图像; 基于第一命中位置调整背景的3D图像; 并综合渲染背景的3D图像和目标的3D图像。 本公开还提供了用于实现该方法的装置。