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    COMPUTED TOMOGRAPHY DEVICE BASED ON STRAIGHT TRAJECTORY AND X-RAY IMAGING DEVICE
    21.
    发明申请
    COMPUTED TOMOGRAPHY DEVICE BASED ON STRAIGHT TRAJECTORY AND X-RAY IMAGING DEVICE 有权
    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

    Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

    Inventor： Mingliang Li ,  Zhiqiang Chen ,  Yuanjing Li ,  Jianmin Li ,  Li Zhang

    IPC: G01N23/04 ,  G21K1/02

    CPC classification number: G01N23/046 ,  A61B6/032 ,  A61B6/035 ,  A61B6/06 ,  G01N2223/3301 ,  G01T1/2985 ,  G21K1/025

    Abstract: 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.

    Abstract translation: 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。

    Dual mode detection method, controller and system
    23.
    发明授权
    Dual mode detection method, controller and system 有权

    公开(公告)号：US11474051B2

    公开(公告)日：2022-10-18

    申请号：US16626572

    申请日：2019-05-29

    Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

    Inventor： Yigang Yang ,  Xuewu Wang ,  Zhi Zhang ,  Yuanjing Li ,  Jianmin Li

    IPC: G01N23/09 ,  G01N23/02 ,  G01N23/05 ,  G01N23/083

    Abstract: The present disclosure provides a dual mode detection method, controller and system, which relates to the technical field of radiation detection. The dual mode detection method of the present disclosure includes: determining a ratio of neutron to X-ray differential cross sections of an inspected object, according to X-ray object detection data, X-ray object-free detection data, neutron object detection data, and neutron object-free detection data; determining a substance type of the inspected object according to a correspondence between the ratio of neutron to X-ray differential cross sections of the inspected object and the substance type.

    Vehicle inspection system
    27.
    发明授权
    Vehicle inspection system 有权

    公开(公告)号：US09817149B2

    公开(公告)日：2017-11-14

    申请号：US14582079

    申请日：2014-12-23

    Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

    Inventor： Jianmin Li ,  Ying Li ,  Yuanjing Li ,  Yulan Li ,  Tao Song ,  Yu Hu ,  Yucheng Wu

    IPC: G01N23/04 ,  G01V5/00 ,  G01N23/083

    CPC classification number: G01V5/0016 ,  G01N23/083

    Abstract: The present invention discloses a vehicle inspection system, comprising: a radiation source; an inspection passage enabling a vehicle to pass; a dragging system comprising a first dragging means and a second dragging means, which are sequentially arranged along a vehicle dragging direction; in the vehicle dragging direction, the first dragging means is arranged at the upstream of the second dragging means, and a separating section is arranged between the first dragging means and the second dragging means, so that the first dragging means is separated from the second dragging means by a preset distance in the vehicle dragging direction; and the first and second dragging means both include a supporting plate, an elongated traction element and a pushing element connected with the elongated traction element, the elongated traction elements of the first and second dragging means are continuous and integrated, thus the elongated traction elements and pushing elements extends on the separating section; the supporting plates of the first and second dragging means are separated and two pieces type, and no supporting plate is provided on the separating section.

    Vehicle dragging system and vehicle inspection system
    28.
    发明授权
    Vehicle dragging system and vehicle inspection system 有权

    公开(公告)号：US09783366B2

    公开(公告)日：2017-10-10

    申请号：US14582087

    申请日：2014-12-23

    Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

    Inventor： Jianmin Li ,  Mingliang Li ,  Yuanjing Li ,  Yulan Li ,  Ying Li ,  Tao Song

    IPC: G01N23/04 ,  B65G15/24 ,  B65G19/02 ,  B65G47/52 ,  B65G15/58 ,  G01M17/00 ,  G01N23/02 ,  G01V5/00

    CPC classification number: B65G15/24 ,  B65G15/58 ,  B65G19/02 ,  B65G47/52 ,  B65G2203/0233 ,  B65G2203/0291 ,  B65G2203/041 ,  G01M17/00 ,  G01N23/02 ,  G01V5/0008

    Abstract: The present invention discloses A vehicle dragging system, comprising a first dragging means and a second dragging means, which are sequentially arranged along a vehicle dragging direction, wherein in the vehicle dragging direction, the first dragging means is arranged at the upstream of the second dragging means, and a separating section is arranged between the first dragging means and the second dragging means, so that the first dragging means is separated from the second dragging means by a preset distance in the vehicle dragging direction, wherein the first dragging means comprises a first supporting plate, a first elongated traction element and a first pushing element connected with the first elongated traction element, and the first pushing element is adapted to move around the first supporting plate for pushing wheels to move along the first supporting plate, in order to drive a vehicle to advance; the second dragging means comprises a second supporting plate, a second elongated traction element and a second pushing element connected with the second elongated traction element, and the second pushing element is adapted to move along the second supporting plate for pushing wheels to move along the second supporting plate, in order to drive the vehicle to advance.

    PHOTOGRAMMETRY SYSTEM AND PHOTOGRAMMETRY METHOD
    29.
    发明申请
    PHOTOGRAMMETRY SYSTEM AND PHOTOGRAMMETRY METHOD 审中-公开
    照相系统和照相术方法

    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。

    Device of detecting ray dose adaptable for coupling with terminal and method of detecting ray dose
    30.
    发明授权
    Device of detecting ray dose adaptable for coupling with terminal and method of detecting ray dose 有权

    公开(公告)号：US12282126B2

    公开(公告)日：2025-04-22

    申请号：US18146101

    申请日：2022-12-23

    Applicant: NUCTECH COMPANY LIMITED

    Inventor： Jianmin Li ,  Guoping Zhu ,  Ming Ruan ,  Kun Zhao ,  Yanli Deng ,  Junli Li ,  Qitian Miao

    IPC: G01T1/20

    Abstract: Provided is a device of detecting a ray dose adaptable for coupling with a terminal, including: a housing, a scintillator and a light shielding layer. The housing has an accommodating space and a window, the accommodating space is in communication with the window; the scintillator is configured to receive a ray and convert a received ray into a visible light, the scintillator is located in the accommodating space, the scintillator covers the window, an outer surface of the scintillator includes a first outer surface and a second outer surface, and the first outer surface is adapted to a camera of the terminal; and the light shielding layer is configured to shield a visible light in an external environment from illuminating on the scintillator, the light shielding layer is arranged on the second outer surface of the scintillator.

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