公开(公告)号：US10074026B2

公开(公告)日：2018-09-11

申请号：US14972106

申请日：2015-12-17

Applicant: NUCTECH COMPANY LIMITED

Inventor： Shangmin Sun ,  Yanwei Xu ,  Qiang Li ,  Weifeng Yu ,  Yu Hu

IPC: G06K9/00 ,  G06K9/32 ,  G06K9/20 ,  H04N5/33

CPC classification number: G06K9/3241 ,  G01V5/0016 ,  G06K9/00201 ,  G06K9/00771 ,  G06K9/209 ,  H04N5/33

Abstract: A vehicle type recognition method based on a laser scanner is provided, the method includes detecting that a vehicle to be checked has entered into a recognition area; causing a laser scanner to move relative to the vehicle to be checked; scanning the vehicle to be checked using the laser scanner on a basis of columns, and storing and splicing data of each column obtained by scanning to form a three-dimensional image of the vehicle to be checked, wherein a lateral width value is specified for each single column of data; specifying a height difference threshold; and determining a height difference between the height at the lowest position of the vehicle to be checked in data of column N and the height at the lowest position of the vehicle to be checked in data of specified number of columns preceding and/or succeeding to the column N.

公开(公告)号：US20160187526A1

公开(公告)日：2016-06-30

申请号：US14982374

申请日：2015-12-29

Applicant: Tsunghua University ,  Nuctech Company Limited

Inventor： Kejun Kang ,  Xuejing Yang ,  Shangmin Sun ,  Yu Hu ,  Jingyu Gu ,  Weifeng Yu ,  Ke Li ,  Lei Liu ,  Youai Yu

IPC: G01V5/00

CPC classification number: G01N23/10 ,  B62D65/005 ,  G01N23/18 ,  G01N2201/0216 ,  G01N2223/301 ,  G01N2223/306 ,  G01N2223/308 ,  G01V5/0016 ,  G01V5/0066 ,  G05B2219/37125 ,  G05B2219/40544 ,  H05G1/46

Abstract: A vehicle-carried quick inspection system includes an X-ray source, a detector, the X-ray source and the detector being arranged to form an inspection passage, a controller configured to control the X-ray source so that X-ray irradiation dose is extremely low when the driver's cab of the inspected vehicle passes through an X-ray beam, and control the X-ray source so that the irradiation dose of the X-ray source becomes a working dose when the other subsequent portions of the inspected vehicle pass through the X-ray beam. A mobile and fully automated security inspection system is obtained and quick inspection can be achieved, while protecting the driver from being damaged from X-ray irradiation.

Abstract translation: 一种车载快速检查系统，包括X射线源，检测器，X射线源和检测器布置成形成检查通道;控制器，被配置为控制X射线源，使得X射线照射剂量 当被检查车辆的驾驶室通过X射线束时，极低，并且控制X射线源，使得当被检查车辆的其他后续部分的X射线源的照射剂量变为工作剂量时 通过X射线束。 获得移动和全自动化的安全检查系统，并可以快速检查，同时保护驾驶员免受X射线照射的损伤。

公开(公告)号：US11952027B2

公开(公告)日：2024-04-09

申请号：US17287116

申请日：2019-10-08

Applicant: NUCTECH COMPANY LIMITED

Inventor： Yanwei Xu ,  Weifeng Yu ,  Yu Hu ,  Shangmin Sun

IPC: B61L27/60

CPC classification number: B61L27/60

Abstract: The present disclosure relates to a train identification system and method, and a train safety inspection system and method. The train identification system includes: a remote detection component, configured to acquire overall feature information of an inspected train through remote monitoring; and an identification device, configured to determine at least one of a type and a traveling situation of the inspected train according to the acquired overall feature information.

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.

公开(公告)号：US20200055355A1

公开(公告)日：2020-02-20

申请号：US16486654

申请日：2018-02-13

Applicant: Nuctech Company Limited

Inventor： Shangmin Sun ,  Hongqi Li ,  Yuan He ,  Quanwei Song ,  Qiangqiang Wang ,  Weifeng Yu

IPC: B60D1/24 ,  B60D1/52

Abstract: The disclosure relates to a traction device and a traction method. The traction device includes: a support chassis; a swing arm, one end of the swing arm is rotatably connected to the support chassis by a rotating shaft such that the swing arm can be switched in a retracted state and a deployed state, wherein the swing arm in the deployed state is adapted to drive the wheel of the vehicle to rotate and tow the vehicle; a driving mechanism, connected to the swing arm, wherein the driving mechanism is capable of driving the swing arm to horizontally rotate around the rotating shaft to switch the swing arm between the retracted state and the deployed state; and a rolling assembly, disposed on a side of the support chassis and being capable of preventing the wheel from contacting with the side of the support chassis when the vehicle is towed.

公开(公告)号：US10129971B2

公开(公告)日：2018-11-13

申请号：US14900601

申请日：2013-11-19

Applicant: Nuctech Company Limited

Inventor： Shangmin Sun ,  Zhanfeng Qin ,  Sheng Yao ,  Weifeng Yu ,  Liwei Song ,  Chunguang Zong ,  Jinning Liang

IPC: G01N23/04 ,  H05H7/02 ,  H05H9/04 ,  G01V5/00

Abstract: The present invention provides a standing wave electron linear accelerator comprising a modulator and a magnetron for producing radio frequency microwaves; a plurality of accelerating tubes for accelerating electrons; a microwave transmission system for feeding the microwaves into the plurality of accelerating tubes; a plurality of electron guns for emitting electron beams into the plurality of accelerating tubes; a plurality of targets impinged by the electrons from a plurality of accelerating tubes to form continuous spectrums of X-rays; a plurality of shielding devices for shielding the continuous spectrums of X-rays generated by the targets; and a microwave distributor disposed adjacent to the end of the microwave transmission system, wherein the microwave distributor has a microwave inlet and a plurality of microwave outlets for distributing the microwaves in the microwave transmission system into the accelerating tubes.

公开(公告)号：US20180322358A1

公开(公告)日：2018-11-08

申请号：US16022666

申请日：2018-06-28

Applicant: NUCTECH COMPANY LIMITED

Inventor： Shangmin SUN ,  Yanwei Xu ,  Qiang Li ,  Weifeng Yu ,  Yu Hu

IPC: G06K9/32 ,  H04N5/33 ,  G06K9/00 ,  G06K9/20

CPC classification number: G06K9/3241 ,  G06K9/00201 ,  G06K9/00771 ,  G06K9/209 ,  H04N5/33

Abstract: A vehicle type recognition method based on a laser scanner is provided, the method comprising steps of: detecting that a vehicle to be checked has entered into a recognition area; causing a laser scanner to move relative to the vehicle to be checked; scanning the vehicle to be checked using the laser scanner on a basis of columns, and storing and splicing data of each column obtained by scanning to form a three-dimensional image of the vehicle to be checked, wherein a lateral width value is specified for each single column of data; specifying a height difference threshold; and determining a height difference between the height at the lowest position of the vehicle to be checked in data of column N and the height at the lowest position of the vehicle to be checked in data of specified number of columns preceding and/or succeeding to the column N.

公开(公告)号：US09910184B2

公开(公告)日：2018-03-06

申请号：US14965978

申请日：2015-12-11

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Jianmin Li ,  Yulan Li ,  Yuanjing Li ,  Hao Yu ,  Chunguang Zong ,  Jingyu Gu ,  Weifeng Yu ,  Quanwei Song ,  Weizhen Wang ,  Shangmin Sun ,  Yinong Liu ,  Junli Li ,  Chuanxiang Tang

IPC: G01V5/00 ,  G01N23/04 ,  G21K1/02

CPC classification number: G01V5/0016 ,  G01V5/0008 ,  G21K1/02

Abstract: The present disclosure discloses an alignment system and an alignment method for a container or vehicle inspection system, and an inspection system. The inspection system comprises comprising an ray source, a collimator, a detector arm and a detector module mounted on a detector arm, the ray source, the collimator and the detector module are arranged to form an inspection passage, a ray beam emitted from the ray source passes through collimator and irradiates onto an inspected object, and an attenuated ray beam is collected by the detector module so as to complete inspection. The alignment system comprises a measuring module arranged to receive the ray beam emitted from the collimator and to measure the ray beam so as to determine positions and orientations of the ray source and the collimator. With the alignment method, alignment between a center point of the ray source, a central line of a detector tip and a central line of the collimator may be more accurately measured.