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公开(公告)号：US10509979B2
公开(公告)日：2019-12-17
申请号：US16255738
申请日：2019-01-23
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Li Zhang , Ziran Zhao , Yaohong Liu , Duokun Zhang , Jianping Gu , Qiang Li , Jian Zhang
IPC: G06K9/32 , G01V5/00 , G01N23/046
Abstract: An inspection method and system for inspecting whether there is any liquor in goods is provided. The method includes: acquiring a radiation image of goods being inspected; processing on the radiation image to obtain an ROI; inspecting on the ROI using a liquor goods inspection model to determine if the ROI of the radiation image contains liquor goods. The above solution performs liquor inspection on scanned images of goods, especially containers, so as to intelligently assist the image inspectors.
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公开(公告)号：US10229336B2
公开(公告)日：2019-03-12
申请号：US15129389
申请日：2015-12-23
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Li Zhang , Ziran Zhao , Yaohong Liu , Duokun Zhang , Jianping Gu , Qiang Li , Jian Zhang
IPC: G01V5/00 , G06K9/32 , G01N23/046
Abstract: An inspection method and system for inspecting whether there is any liquor in goods is provided. The method includes: acquiring a radiation image of goods being inspected; processing on the radiation image to obtain an ROI; inspecting on the ROI using a liquor goods inspection model to determine if the ROI of the radiation image contains liquor goods. The above solution performs liquor inspection on scanned images of goods, especially containers, so as to intelligently assist the image inspectors.
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公开(公告)号：US20180196158A1
公开(公告)日：2018-07-12
申请号：US15868378
申请日：2018-01-11
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Gang Fu , Jun Zhang , Jianping Gu , Yaohong Liu , Ziran Zhao
CPC classification number: G01V5/0016 , G06T7/001 , G06T2207/10116
Abstract: An inspection device and a method for detecting a firearm are disclosed. X-ray inspection is performed on an inspected object to obtain a transmission image. A plurality of candidate regions in the transmission image are determined using a trained firearm detection neural network. The plurality of candidate regions are classified using the firearm detection neural network to determine whether there is a firearm included in the transmission image. With the above solution, it is possible to determine more accurately whether there is a firearm included in a container/vehicle.
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公开(公告)号：US20180195977A1
公开(公告)日：2018-07-12
申请号：US15868359
申请日：2018-01-11
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Qili Wang , Shiyu Dai , Jianping Gu , Yaohong Liu , Ziran Zhao
CPC classification number: G01N23/04 , G01V5/0016 , G06K9/2054 , G06K9/6256 , G06K9/6267 , G06N3/04 , G06N3/0454 , G06N3/08 , G06T5/50 , G06T7/001 , G06T7/74 , G06T2207/10116 , G06T2207/20221 , G06T2207/30112 , G06T2207/30232
Abstract: An inspection device and a method for detecting a firearm in a luggage are disclosed. The method comprises: performing X-ray inspection on the luggage to obtain a transmission image; determining a plurality of candidate regions in the transmission image using a trained firearm detection neural network; and classifying the plurality of candidate regions using the detection neural network to determine whether there is a firearm included in the transmission image. With the above solutions, it is possible to determine more accurately whether there is a firearm included in a luggage. In other embodiments, after a firearm is detected using the above method, a label is marked in the image to prompt an image judger.
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公开(公告)号：US09983321B2
公开(公告)日：2018-05-29
申请号：US15258209
申请日：2016-09-07
Applicant: Nuctech Company Limited , TSINGHUA UNIVERSITY
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Xiang Zou , Huishao He , Shuwei Li , Jianping Chang , Wenjian Zhang
CPC classification number: G01T7/00 , G01J1/0271 , G01J2001/0276
Abstract: The invention discloses a safety inspection detector and a goods safety inspection system. The safety inspection detector at least comprises a circuit board, a first housing, a second housing, a detection module and a connecting interface. The detection module and the connecting interface are mounted on the circuit board. The first housing is pressed and connected to a first surface of the circuit board, and the second housing is pressed and connected to a second surface of the circuit board. The first housing and the second housing can hermetically wrap the detection module and electronic devices on the circuit board, but bypass the connecting interface to realize leading-out and connection with related interconnected cables by utilizing the connecting interface. The housings can be used for sealing and protecting sensitive electronic devices in the detector, thus being moisture proof and preventing interference.
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Patent Agency Ranking
公开(公告)号：US20140185754A1
公开(公告)日：2014-07-03
申请号：US14134845
申请日：2013-12-19
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Huaping Tang , Yuanjing Li , Ziran Zhao , Yaohong Liu , Zhanfeng Qin , Jinyu Zhang , Hu Tang
IPC: G01V5/00
CPC classification number: G01V5/0016 , G01N23/046 , G01V5/005
Abstract: This invention relates to an X-ray goods inspection apparatus, and in particular to a goods inspection apparatus using distributed X-ray source.
Abstract translation: 本发明涉及一种X射线物品检查装置，特别涉及一种使用分布式X射线源的货物检验装置。
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公开(公告)号：US11737202B2
公开(公告)日：2023-08-22
申请号：US17247800
申请日：2020-12-23
Applicant: NUCTECH COMPANY LIMITED
Inventor： Yaohong Liu , Jinsheng Liu , Wei Jia , Wei Yin , Feng Gao , Xiying Liu , Haokun Wang
CPC classification number: H05H9/04 , H05H7/02 , H05H2007/027
Abstract: Embodiments of the disclosed technology provide an apparatus for controlling a standing wave linear accelerator. An example standing wave linear accelerator includes an accelerating tube, a motor, and a microwave power source connected between the accelerating tube and the motor. An example apparatus includes a main processor configured to receive an envelope signal of a reflected wave signal output by the accelerating tube, determine whether an amplitude of the envelope signal is greater than an envelope threshold, and if it is determined that the amplitude of the envelope signal is less than the envelope threshold, determine whether to change a rotation direction of the motor by comparing the amplitude of the envelope signal with an envelope reference signal stored in a memory. The memory is connected to the main processor and is configured to store the envelope threshold and the envelope reference signal.
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公开(公告)号：US11346975B2
公开(公告)日：2022-05-31
申请号：US16467140
申请日：2017-08-04
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Ziran Zhao , Yaohong Liu , Jianping Gu , Qian Yi , Bicheng Liu , Guangming Xu
IPC: G01V5/00 , G01N23/046 , G01T1/29
Abstract: The present disclosure provides a spiral Computed Tomography (CT) device and a three-dimensional image reconstruction method. The spiral CT device includes: an inspection station operable to carry an object to be inspected and defining an inspection space; a rotational supporting apparatus disposed around the inspection space; a plurality of X-ray sources located on the rotational supporting apparatus; and a plurality of X-ray receiving apparatuses located on the rotational supporting apparatus and opposing to the plurality of X-ray sources respectively, wherein the plurality of X-ray sources and the plurality of X-ray receiving apparatuses are rotational synchronously with the rotational supporting apparatus, wherein the plurality of X-ray sources are closely disposed and fan-shaped X-ray beams provided by the plurality of X-ray sources cover the inspection space with a minimum degree of overlapping.
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公开(公告)号：US11215626B2
公开(公告)日：2022-01-04
申请号：US16406272
申请日：2019-05-08
Applicant: TSINGHUA UNIVERSITY , Nuctech Company Limited
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Qiufeng Ma , Lili Yan , Weiping Zhu , Biao Cao
Abstract: The present disclosure provides a gate system for sample detection and a method of sample inspection, which relate to the field of detection and analysis technology. The gate system comprises: an accommodating apparatus configured to accommodate an inserted ticket to be detected; a wipe sampling apparatus including a wipe sampling belt which is configured to drive the ticket to be detected to move within the accommodating apparatus and to conduct a wipe sampling to the ticket; an inspiratory sampling apparatus configured to collect samples dropped from the wipe sampling apparatus; and a detection apparatus configured to detect the samples and output detection results. The gate system for sample detection and the method of sample inspection provided by the present disclosure have a wide range of applications and can perform rapid sampling and detection to those substances that are difficult to be volatilized.
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公开(公告)号：US11193860B2
公开(公告)日：2021-12-07
申请号：US16314063
申请日：2018-12-10
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Lili Yan , Ge Li , Qiufeng Ma
IPC: G01N1/34 , G01N1/22 , G01N1/44 , G01N27/622
Abstract: Embodiments of the present disclosure provide a gas purifying device and an ion migration spectrometer. The gas purifying device includes a first purificant vessel, a second purificant vessel and a valve communicated between the first purificant vessel and the second purificant vessel. The valve is configured to allow a gas flows from the second purificant vessel to the first purificant vessel in a first state and to permit the gas to flow from the first purificant vessel to the second purificant vessel in a second state.
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