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公开(公告)号：US20210354738A1
公开(公告)日：2021-11-18
申请号：US17287116
申请日：2019-10-08
Applicant: NUCTECH COMPANY LIMITED
Inventor： Yanwei XU , Weifeng YU , Yu HU , Shangmin SUN
IPC: B61L27/00
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.
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公开(公告)号：US20170237949A1
公开(公告)日：2017-08-17
申请号：US15300737
申请日：2015-11-06
Applicant: NUCTECH COMPANY LIMITED
Inventor： Yongming WANG , Yanwei XU , Weifeng YU
CPC classification number: H04N7/188 , G06K7/00 , G06K9/209 , G06K9/3258 , G06K2209/01 , G06K2209/19 , H04N5/247 , H04N7/181
Abstract: The present disclosure provides a method of identifying a container number, including: arranging an image acquiring device along a passageway through which a container will pass, the image acquiring device comprising a trigger unit and a plurality of image acquiring units, at least two image acquiring units of the plurality of image acquiring units being adapted to respectively acquire images of the container numbers on at least two surfaces of a plurality of surfaces of the container passing through the passageway; acquiring the images of the container numbers on the at least two surfaces respectively by the at least two image acquiring units based on a signal from the trigger unit; and identifying the container number at least based on the images or data from the at least two image acquiring units about the container number. The present disclosure also relates to a system of identifying a container number.
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公开(公告)号：US20170160168A1
公开(公告)日：2017-06-08
申请号：US15278435
申请日：2016-09-28
Applicant: Nuctech Company Limited
Inventor： Yanwei XU , Weifeng YU
IPC: G01M17/007 , G01N23/04 , G01B11/04
CPC classification number: G01M17/007 , G01B11/04 , G01N23/04 , G01N2223/03 , G01N2223/05 , G01N2223/631 , G01V5/0016 , G01V5/0066
Abstract: A method and a system for fast inspecting a vehicle based on a length measuring device, including: when a subject vehicle enters an inspection region, measuring a first length and a second length of the subject vehicle; determining whether the first length and the second length is respectively larger than or equal to a preset second length threshold; if so, determining whether a gap portion of the subject vehicle between a first portion and a second portion of the subject vehicle appears in a beam emitting region formed by a beam of radiation rays emitted by the system for fast inspecting a vehicle; and when the gap portion appears in the beam emitting region, emitting a beam of radiation rays of a first radiation dose to the subject vehicle according to the gap portion, wherein the subject vehicle moves with respect to the system for fast inspecting a vehicle.
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公开(公告)号：US20210270991A1
公开(公告)日：2021-09-02
申请号：US17255394
申请日：2020-01-06
Inventor： Yanwei XU , Weifeng YU , Yu HU , Chunguang ZONG , Shangmin SUN
IPC: G01V5/00 , G01S17/894 , G06K9/78
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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5.发明申请公开(公告)号：US20170186172A1
公开(公告)日：2017-06-29
申请号：US15280113
申请日：2016-09-29
Applicant: Nuctech Company Limited
Inventor： Yanwei XU , Weifeng YU
CPC classification number: G06K9/00624 , G06K9/44 , G06K2209/01 , G06K2209/19 , G06T5/006 , H04N1/00442 , H04N19/23
Abstract: The present disclosure provides a method and system for identifying a train number and train type. The method includes: continuously photographing a train under inspection by using a linear-array camera in motion relative to the train under inspection, and generating a plurality of partial images of the train; splicing the plurality of partial images of the train; correcting distortion of the spliced image; identifying a train number from the corrected image; wherein the correcting distortion of the spliced image includes: extracting a contour of a wheel from the spliced image; obtaining a ratio between a horizontal diameter and a vertical diameter of the wheel from the contour; if the ratio is greater than a first preset threshold, horizontally compressing the spliced image according to the ratio; and if the ratio is smaller than a second preset threshold, horizontally stretching the spliced image.
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Patent Agency Ranking
公开(公告)号：US20200217963A1
公开(公告)日：2020-07-09
申请号：US16826235
申请日：2020-03-22
Applicant: NUCTECH COMPANY LIMITED , NUCTECH (BEIJING) COMPANY LIMITED
Inventor： Jian LI , Shangmin SUN , Yongming WANG , Yanwei XU , Weifeng YU , Yu HU , Chunguang ZONG
Abstract: The present disclosure provides a laser speed measuring method, control device and a laser velocimeter, and relates to the technical field of security inspection. The laser speed measuring method comprises the steps of: acquiring detection data within a predetermined detection angle range in a plurality of paralleled horizontal planes having different heights, from a plurality of laser rays detected towards a road extending direction in the horizontal plane; acquiring three-dimensional point cloud data according to the detection data; determining a position of a measured object in the road extending direction according to the three-dimensional point cloud data; and determining a speed of the measured object according to the position change of the measured object along the road extending direction at different timing.
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公开(公告)号：US20180149769A1
公开(公告)日：2018-05-31
申请号：US15798569
申请日：2017-10-31
Applicant: Nuctech Company Limited
Inventor： Tao JIANG , Yanwei XU , Shangmin SUN , Yu HU , Weifeng YU , Xuejing YANG , Youai YU , Ke LI , Defang MENG
IPC: G01V8/26
Abstract: A mobile scanning inspection system, comprising a vehicle body and an inspection arm including a cross arm and a vertical arm, wherein a first inspection device and a second inspection device are provided on the cross arm; the first inspection device is on the side close to the vehicle body and it emits a first laser inspection plane parallel to the side plane of the vehicle body, and the length of the longest portion of the first laser inspection plane is longer than the length of the vehicle body; the second inspection device is provided on the side close to the vertical arm and it emits a second laser inspection plane parallel to the side plane of the vehicle body and the second laser inspection plane is centered on the vertical arm, and extends a first preset distance and a second preset distance forward and backward.
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8.发明申请公开(公告)号：US20170160304A1
公开(公告)日：2017-06-08
申请号：US15278447
申请日：2016-09-28
Applicant: Nuctech Company Limited
Inventor： Junjie TU , Yanwei XU , Weifeng YU , Yongming WANG
CPC classification number: G01P3/68 , G01P3/36 , G01S17/42 , G01S17/58 , G01S17/88 , G01V5/0016 , G08G1/04 , G08G1/052
Abstract: The present disclosure relates to a method and a device for monitoring a state of a moving object and a system for fast inspecting a vehicle. The method and a device for monitoring a state of a moving object positions and measures speed of the moving object by using a laser scanner. The device includes: a laser scanner configured to monitor at least one moving object entering a monitoring region, by emitting a plurality of laser beams of different angles to the at least one moving object with a preset scanning frequency; and a processing unit configured to, for each moving object, determine and output a relative position of the moving object with respect to the laser scanner at each time instance. It can significantly improve the accuracy of measuring a low speed of the moving object, and the laser scanner is easy to install and has a low cost.
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公开(公告)号：US20240319401A1
公开(公告)日：2024-09-26
申请号：US18260008
申请日：2021-12-10
Applicant: NUCTECH COMPANY LIMITED , NUCTECH (BEIJING) COMPANY LIMITED
Inventor： Yanwei XU , Shangmin SUN , Chunguang ZONG , Yu HU , Yuan MA
IPC: G01V5/22
CPC classification number: G01V5/232
Abstract: A vehicle safety inspection system and method are provided. The vehicle safety inspection system includes: a scanning device mounted in an inspection region for scanning a detected vehicle; an imaging device for acquiring an image of the vehicle being driven into the inspection region; a recognition module for recognizing the image and determining a type of the vehicle according to a recognized image; a selection module for selecting a feature of a trunk of the vehicle according to a determined type of the vehicle; a position sensor for detecting a position of a predetermined part of the vehicle in the inspection region; and a controller for controlling the scanning device to scan and inspect the trunk when a front end section of the trunk of the vehicle is determined to enter a scanning region of the scanning device according to the feature and position of the vehicle.
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公开(公告)号：US20220084336A1
公开(公告)日：2022-03-17
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
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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