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公开(公告)号：US10948427B2
公开(公告)日：2021-03-16
申请号：US16231373
申请日：2018-12-21
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Ke Li , Jianmin Li , Weifeng Yu , Yulan Li , Xuejing Yang , Yuanjing Li , Chunguang Zong , Zhiqiang Chen , Li Zhang
IPC: G01N23/04
Abstract: The present disclosure provides a scanned image correction apparatus, method and a mobile scanning device. The apparatus includes an image collector, an arm swing detector, and an image processor. The image collector is configured to collect a scanned image of an object under inspection during a scanning process of scanning the object under inspection by the mobile scanning device, and determine an image parameter of the scanned image. The arm swing detector is disposed at a monitor point on a detector arm of the mobile scanning device, and configured to detect a displacement offset of the detector arm in a specified direction and build an arm swing model of the detector arm. The image processor is configured to determine a change relationship between the image parameter of the scanned image and the displacement offset of the detector arm, and correct the scanned image based on the change relationship.
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公开(公告)号：US10082596B2
公开(公告)日：2018-09-25
申请号：US14582097
申请日：2014-12-23
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Yu Hu , Jianmin Li , Hui Meng , Yuan Ma , Weifeng Yu , Jinning Liang , Shangmin Sun
CPC classification number: G01V5/0016 , B65G15/44 , B65G17/08 , B65G47/66 , F16M13/02
Abstract: The present invention discloses a vehicle inspection system, comprising: an inspection passage; a vehicle dragging system arranged in the inspection passage, wherein the vehicle dragging system comprises a first dragging means and a second dragging means, which are sequentially arranged along a vehicle dragging direction, and 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 and the second dragging means are separated by a preset distance in the vehicle dragging direction; and a radiographic inspection system, wherein at least a part of paths of the beams of the radiographic inspection system passes through the separating section between the first dragging means and the second dragging means.
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公开(公告)号：US09448188B2
公开(公告)日：2016-09-20
申请号：US14412516
申请日：2013-07-02
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Jianmin Li , Yinong Liu , Yulan Li , Chunguang Zong , Hui Gong , Qingping Huang , Weifeng Yu
CPC classification number: G01N23/10 , G01N23/04 , G01N2223/301 , G01N2223/308 , G01V5/0016 , G01V5/0066
Abstract: The present invention discloses a vehicular radiation inspection system comprising a mobile vehicle body, a detection arm, a radiation source and a detector. The vehicular radiation inspection system further comprises a following mechanism separated from the detection arm. The following mechanism contains radiation protection material, and the following mechanism follows the detection arm to move in a non-contact manner during inspection of the inspected object, so as to prevent radiation leakage. In the present invention, it does not need to infuse radiation protection material having a high density, such as lead, into the detection arm. Therefore, it can effectively decrease the weight of the detection arm, and it does not need to provide a balance counterweight on the mobile vehicle body on which the detection arm is carried, thereby effectively solving the problem that the vehicular radiation inspection system has an excessively large mass. Meanwhile, in the present invention, the moving process of the following mechanism is accurately controlled, so as to prevent the following mechanism from hitting the detection arm.
Abstract translation: 本发明公开了一种包括移动车身，检测臂，辐射源和检测器的车辆辐射检查系统。 车辆辐射检查系统还包括与检测臂分离的跟随机构。 以下机构包含辐射防护材料，并且在检查被检查物体的检查期间，跟随检测臂的机构以非接触的方式移动，以防止辐射泄漏。 在本发明中，不需要将诸如铅的高密度的辐射防护材料注入到检测臂中。 因此，能够有效地降低检测臂的重量，并且不需要在携带检测臂的移动体上提供平衡配重，从而有效地解决了车辆用辐射检查系统过度的问题 大量。 同时，在本发明中，精确地控制以下机构的移动过程，以防止以下机构撞击检测臂。
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公开(公告)号：US11822043B2
公开(公告)日：2023-11-21
申请号：US17420681
申请日：2020-01-03
Inventor： 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: G01N23/04 , G01N23/083 , G01N23/087 , G01N23/10 , G01V5/00 , G01N23/18
CPC classification number: G01V5/0066 , G01N23/04 , G01N23/083 , G01N23/087 , G01N23/10 , G01N23/18 , G01V5/0008 , G01V5/0016 , G01V5/0041 , G01N2223/04 , G01N2223/3303 , G01N2223/40 , G01N2223/639
Abstract: 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.
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公开(公告)号：US11822040B2
公开(公告)日：2023-11-21
申请号：US17255394
申请日：2020-01-06
Inventor： Yanwei Xu , Weifeng Yu , Yu Hu , Chunguang Zong , Shangmin Sun
IPC: G01S17/894 , G01V5/00
CPC classification number: G01V5/0016 , G01S17/894 , G06V2201/08
Abstract: The present disclosure relates to a security scanning inspection system and method. The security scanning inspection system comprises a detector, a scanning device and a controller, wherein the detector is configured to detect a protective attribute of an object to be inspected; the scanning device is movably arranged and the scanning device is configured to emit a scanning ray during movement to perform a security scanning inspection on the object to be inspected, the scanning device comprising at least two working modes, wherein a dose of a scanning ray in each working mode is different from a dose of a scanning ray in any other working modes; and the controller configured to select a working mode of the scanning device according to the protective attribute of the object to be inspected detected by the detector.
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Patent Agency Ranking
公开(公告)号：US10935691B2
公开(公告)日：2021-03-02
申请号：US16234625
申请日：2018-12-28
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Kejun Kang , Jianmin Li , Xiulin Ni , Yulan Li , Yuanjing Li , Zhiqiang Chen , Li Zhang , Liang Li , Xiang Zou , Weifeng Yu , Hejun Zhou , Chunguang Zong
IPC: G01V5/00 , G01N23/046
Abstract: The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.
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公开(公告)号：US20150192531A1
公开(公告)日：2015-07-09
申请号：US14412516
申请日：2013-07-02
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Jianmin Li , Yinong Liu , Yulan Li , Chunguang Zong , Hui Gong , Qingping Huang , Weifeng Yu
CPC classification number: G01N23/10 , G01N23/04 , G01N2223/301 , G01N2223/308 , G01V5/0016 , G01V5/0066
Abstract: The present invention discloses a vehicular radiation inspection system comprising a mobile vehicle body, a detection arm, a radiation source and a detector. The vehicular radiation inspection system further comprises a following mechanism separated from the detection arm. The following mechanism contains radiation protection material, and the following mechanism follows the detection arm to move in a non-contact manner during inspection of the inspected object, so as to prevent radiation leakage. In the present invention, it does not need to infuse radiation protection material having a high density, such as lead, into the detection arm. Therefore, it can effectively decrease the weight of the detection arm, and it does not need to provide a balance counterweight on the mobile vehicle body on which the detection arm is carried, thereby effectively solving the problem that the vehicular radiation inspection system has an excessively large mass. Meanwhile, in the present invention, the moving process of the following mechanism is accurately controlled, so as to prevent the following mechanism from hitting the detection arm.
Abstract translation: 本发明公开了一种包括移动车身，检测臂，辐射源和检测器的车辆辐射检查系统。 车辆辐射检查系统还包括与检测臂分离的跟随机构。 以下机构包含辐射防护材料，并且在检查被检查物体的检查期间，跟随检测臂的机构以非接触的方式移动，以防止辐射泄漏。 在本发明中，不需要将诸如铅的高密度的辐射防护材料注入到检测臂中。 因此，能够有效地降低检测臂的重量，并且不需要在携带检测臂的移动体上提供平衡配重，从而有效地解决了车辆用辐射检查系统过度的问题 大量。 同时，在本发明中，精确地控制以下机构的移动过程，以防止以下机构撞击检测臂。
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公开(公告)号：US12020518B2
公开(公告)日：2024-06-25
申请号：US17421709
申请日：2020-01-23
Inventor： Yongming Wang , Junjie Tu , Chuan Gao , Yanwei Xu , Weifeng Yu , Chunguang Zong , Yu Hu
CPC classification number: G07C5/0825 , B60W40/10 , G07C5/0808 , B60W2554/4041 , B60W2554/4049
Abstract: This disclosure provides a vehicle inspection method, apparatus, system, and computer-readable storage medium and relates to the field of security inspection technologies. The vehicle inspection method of the present disclosure includes: acquiring vehicle profile information of a vehicle through a first sensor that performs measurement in a direction perpendicular to a passage, and determining a feature point of the vehicle according to the vehicle profile information; determining a position of the vehicle in the passage through a second sensor that performs measurement in a direction along the passage, and determining a position of the feature point according to the position of the vehicle in the passage; and switching an operating mode of a ray source based on a preset strategy according to a position relation between the position of the feature point and the ray source.
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公开(公告)号：US10151712B2
公开(公告)日：2018-12-11
申请号：US14982374
申请日：2015-12-29
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Kejun Kang , Xuejing Yang , Shangmin Sun , Yu Hu , Jingyu Gu , Weifeng Yu , Ke Li , Lei Liu , Youai Yu
Abstract: The present disclosure provides a vehicle-carried inspection system, including a radiation source and a detector, the radiation source and the detector being arranged to form an inspection passage. The inspection system further includes a controller configured to control the radiation source so that a first dose of radiation which is safe to a driver is radiated from the radiation source when the driver's cab of the inspected vehicle passes through a ray beam, and control the radiation source so that the dose of radiation of the radiation source becomes a working dose of radiation larger than the first dose of radiation when the other subsequent portions of the inspected vehicle pass through the ray beam.
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公开(公告)号：US11327198B2
公开(公告)日：2022-05-10
申请号：US16234621
申请日：2018-12-28
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Xiulin Ni , Jianmin Li , Haitian Tan , Yulan Li , Weifeng Yu , Yuanjing Li , Hejun Zhou , Zhiqiang Chen , Chunguang Zong , Li Zhang
IPC: G01N23/046 , G01V5/00 , A61B6/03 , A61B6/00 , G01N23/18
Abstract: The present disclosure relates to the technical field of CT detection, in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure includes a scanning device and an imaging device, wherein the scanning device having a radioactive source device and a detection device is configured to rotate at a nonuniform speed in at least partial process of scanning an object to be detected; and the imaging device generates a CT image based on effective detection data, wherein the effective detection data refer to data acquired each time the detection device rotates by a preset angle. In the present disclosure, the imaging device of the CT inspection system generates a CT image based on data acquired each time the detection device rotates by a preset angle, which, compared with traditional image collection solutions, can effectively reduce image deformation and improve accuracy of detection results.
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