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    Vehicle detection system
    1.
    发明授权
    Vehicle detection system 有权

    公开(公告)号：US10795050B2

    公开(公告)日：2020-10-06

    申请号：US16233387

    申请日：2018-12-27

    Applicant: TSINGHUA UNIVERSITY ,  Nuctech Company Limited

    Inventor： Ying Li ,  Jianmin Li ,  Jinguo Cao ,  Yuan Ma ,  Yulan Li ,  Yuan He ,  Yuanjing Li ,  Hui Meng ,  Zhiqiang Chen ,  Yiwei Guo ,  Li Zhang

    IPC: G01V5/00 ,  G06K9/00

    Abstract: A vehicle detection system includes a transverse detector arm, two vertical detector arms, a radiation source, a plurality of transverse detectors, and a plurality of vertical detectors. The transverse detector arm may be disposed on the ground. Two vertical detector arms are disposed at both ends of the transverse detector arm. The radiation source is located above the transverse detector arm. A plurality of transverse detectors are disposed within the transverse detector arm and are laid along a length direction of the transverse detector arm for receiving ray emitted by the radiation source. The plurality of vertical detectors are symmetrically disposed on the two vertical detector arms, and each of the vertical detectors is disposed towards a center point of the radiation source for receiving ray emitted by the radiation source.

    Vehicle identification methods and systems
    2.
    发明授权
    Vehicle identification methods and systems 有权

    公开(公告)号：US10607483B2

    公开(公告)日：2020-03-31

    申请号：US15300947

    申请日：2015-12-23

    Applicant: Nuctech Company Limited ,  Tsinghua University

    Inventor： Zhiqiang Chen ,  Li Zhang ,  Jianmin Li ,  Ziran Zhao ,  Yaohong Liu ,  Qiang Li ,  Zheng Hu ,  Jianping Gu ,  Ying Li

    IPC: G08G1/054 ,  G08G1/017 ,  G06K9/46 ,  G01V5/00 ,  G08G1/015

    Abstract: 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.

    Quick vehicle check system and method adopting multi-dose regional scanning
    5.
    发明授权
    Quick vehicle check system and method adopting multi-dose regional scanning 有权

    公开(公告)号：US10754056B2

    公开(公告)日：2020-08-25

    申请号：US14972115

    申请日：2015-12-17

    Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

    Inventor： Ying Li ,  Jianmin Li ,  Tao Song

    IPC: G01N23/04 ,  G01V5/00

    Abstract: A quick vehicle check system comprises a radiation source which produces a first X ray with a first dose and a second X ray with a second dose, wherein the first dose is smaller than the second dose, and the first X ray is used for checking a first part of a checked vehicle and the second X ray is used for checking a second part of the checked vehicle; a first sensor for detecting a set position of the checked vehicle; a second sensor for detecting a passing distance of the checked vehicle; and a control unit coupled with the first sensor and the second sensor, which receives the set position of the checked vehicle from the first sensor and receives the passing distance of the checked vehicle from the second sensor.

    Radiation protection device
    6.
    发明授权
    Radiation protection device 有权

    公开(公告)号：US09685247B2

    公开(公告)日：2017-06-20

    申请号：US14459408

    申请日：2014-08-14

    Applicant: Tsinghua University ,  Nuctech Company Limited

    Inventor： Kejun Kang ,  Yuanjing Li ,  Ying Li ,  Jianmin Li ,  Junli Li ,  Yanli Deng

    IPC: G21F3/00 ,  G01V5/00 ,  G21F1/02 ,  G21F1/04

    CPC classification number: G21F3/00 ,  G01V5/0016 ,  G21F1/023 ,  G21F1/042

    Abstract: A radiation protection device is disclosed in the embodiment of the present invention. The radiation protection device is used for a system which is configured to perform safety inspection of a cargo or a vehicle by a ray. The radiation protection device comprising: at least one container, and a radiation protection part disposed within the container. The radiation protection material may comprise at least one of concrete, sandstone, and water, or the radiation protection part may comprise a steel-lead protection wall or a concrete protection wall. With the radiation protection device according to the embodiment of the present invention, after the container is transported to the site, it can be directly put in place to be capable of shielding rays without needing operation or with only simple operation. The amount of on-site work, construction time, and construction cost are low.

    Collimator and inspection system having the same
    7.
    发明授权
    Collimator and inspection system having the same 有权

    公开(公告)号：US10658088B2

    公开(公告)日：2020-05-19

    申请号：US15277828

    申请日：2016-09-27

    Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

    Inventor： Kejun Kang ,  Ying Li ,  Jianmin Li ,  Yulan Li ,  Guoping Zhu

    IPC: G21K1/04 ,  G01V5/00

    Abstract: A collimator and an inspection system having the collimator are disclosed. The collimator includes: a collimator body including a first part and a second part; a collimating slit formed between the first part and the second part and having a first end and a second end in a longitudinal direction thereof; and a shielding member which is movable relative to the collimator body such that both a beam divergent angle and an elevation angle of a ray beam propagating through the collimating slit are varied. An inspection system and an inspection method for scanning a vehicle are further disclosed.

    Radiation image inspection system and method based on B/S architecture
    9.
    发明授权
    Radiation image inspection system and method based on B/S architecture 有权

    公开(公告)号：US09947067B2

    公开(公告)日：2018-04-17

    申请号：US14753520

    申请日：2015-06-29

    Applicant: TSINGHUA UNIVERSITY ,  Nuctech Company Limited

    Inventor： Zhiqiang Chen ,  Li Zhang ,  Ziran Zhao ,  Xianghao Wu ,  Limin Liu ,  Min Li ,  Xiaoming Song ,  Xinfang Huang ,  Ying Li

    IPC: G06F17/30 ,  G06T1/60 ,  G06T1/20

    CPC classification number: G06T1/20 ,  G06F17/30861 ,  G06F17/30902 ,  G06T1/60

    Abstract: The present disclosure provides a radiation image inspection system based on B/S architecture. The system comprises: at least one client terminal, configured to initiate an image operation request to a Web server, and display an image operation result on a browser of the client terminal upon receiving a response from the Web server; an image processing assembly, configured to query, based on the image operation request from the client terminal and forwarded by the Web server, an image which the client terminal desires to process, perform an operation on an image as requested by the client terminal, convert the resulted image into an image in a designated format and quality and return the converted image to the browser of the client terminal via the Web server for displaying; and the Web server, configured to receive the image operation request from the client terminal, forward the image operation request to the image processing assembly, and return the image operation result from the image processing assembly to the client terminal.

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