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131.发明公开公开(公告)号：US20230350053A1
公开(公告)日：2023-11-02
申请号：US18139411
申请日：2023-04-26
Applicant: NUCTECH COMPANY LIMITED , Tsinghua University
CPC classification number: G01S13/887 , G06T5/50 , G06T7/62 , G06T7/70 , G06V10/761 , G06V20/70 , G06V2201/07 , G06T2207/20081 , G06T2207/20104 , G06T2207/20221
Abstract: Provided are a method and an apparatus of training a radiation image recognition model online and a method and an apparatus of recognizing a radiation image. Preset data is pre-stored in a radiation inspection system, and the preset data includes a first radiation image. The method of training radiation image recognition model online includes: collecting a second radiation image at the radiation inspection site; labeling the second radiation image online to form on-site collected data having a second labeling information, wherein the second labeling information is an incomplete labeling information of the second radiation image, and the second labeling information is used to indicate at least one of objects of interest in the second radiation image; synthesizing the preset data and the on-site collected data online to form a training data set; and training the radiation image recognition model online using the training data set.
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公开(公告)号：US20230255576A1
公开(公告)日：2023-08-17
申请号：US18011388
申请日：2021-07-02
Applicant: TSINGHUA UNIVERSITY , Nuctech Company Limited , NuRay Technology Co., Ltd.
Inventor： Zhiqiang CHEN , Huaping TANG , Xin JIN
Abstract: The present application relates to a deflection electrode assembly, an X-ray source, and an X-ray imaging system. The deflection electrode assembly includes: a first electrode plate, including a first connection portion and a plurality of first tooth portions, wherein the first electrode plate is formed as a comb shape; and a second electrode plate, including a second connection portion and a plurality of second tooth portions, wherein the second electrode plate is formed as a comb shape. The first electrode plate and the second electrode plate are not in contact with each other, and the plurality of first tooth portions and the plurality of second tooth portions are arranged at least partially in a staggered manner to form a plurality of electron beam passageways; each electron beam passageway is located between adjacent first and second tooth portions.
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公开(公告)号：US20220091051A1
公开(公告)日：2022-03-24
申请号：US17471725
申请日：2021-09-10
Applicant: NUCTECH COMPANY LIMITED , Tsinghua University
Inventor： Zhiqiang CHEN , Li ZHANG , Xiaofei XU , Le SHEN , Ming CHANG , Hu TANG , Xin JIN , Yunda SUN
IPC: G01N23/046 , G01N23/083
Abstract: A multi-channel static CT device is provided, and the multi-channel static CT device includes: a scanning channel including a plurality of scanning sub-channels; a distributed X-ray source including a plurality of ray emission points arranged around the scanning channel; and a detector module including a plurality of detectors arranged around the scanning channel, wherein the plurality of detectors are arranged corresponding to the plurality of ray emission points.
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公开(公告)号：US20220024039A1
公开(公告)日：2022-01-27
申请号：US17333886
申请日：2021-05-28
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Jin CUI , Bin HU , Dong LIN , Huawei WU
Abstract: A boundary protection method and system of a radiation detection robot. The boundary protection method comprises: a first laser radar and a second laser radar are arranged diagonally, a first marking rod and a second marking rod are arranged diagonally; a boundary of an interlocking zone is defined by the first laser radar, the second laser radar, the first marking rod and the second marking rod; the object to be detected is placed in the interlocking zone; the radiation detection robot uses rays to detect the object to be detected in the interlocking zone; an early warning zone is provided outside the interlocking zone; wherein when it is detected that a person or object has intruded into the interlocking zone, the radiation detection robot stops emitting rays; and when it is detected that a person or object has intruded into the early warning zone, a warning is issued directly.
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135.发明申请公开(公告)号：US20210302335A1
公开(公告)日：2021-09-30
申请号：US17054025
申请日：2019-05-10
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Wanlong WU , Fuhua DING , Zhimin ZHENG , Xilei LUO
Abstract: Embodiments of the present disclosure disclose a combined scanning X-ray generator, a composite inspection apparatus and an inspection method. The combined scanning X-ray generator includes: a housing; an anode arranged in the housing, the anode including a first end of the anode and a second end of the anode opposite the first end of the anode; a pencil beam radiation source arranged at the first end of the anode and configured to emit a pencil X-ray beam; and a fan beam radiation source arranged at the second end of the anode and configured to emit a fan X-ray beam; wherein the pencil beam radiation source and the fan beam radiation source are operated independently.
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Patent Agency Ranking
公开(公告)号：US20200209192A1
公开(公告)日：2020-07-02
申请号：US16727612
申请日：2019-12-26
Applicant: NUCTECH COMPANY LIMITED , Tsinghua University
Inventor： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Jianmin LI , Yaohong LIU , Weiping ZHU , Qiufeng MA , Biao CAO , Ge LI , Wei WANG , Lili YAN , Guangqin LI
Abstract: Embodiments of the present disclosure provide an ion mobility spectrometer device. The ion mobility spectrometer device includes: an ion mobility tube, a sampling device, and a sampling and circulating gas path. The sampling device includes a solid sample desorption device and a gas sampling device. The solid sample desorption device is configured to process the solid sample into a first mixed gas containing the solid sample, and the gas sampling device is configured to process the gas sample into a second mixed gas containing the gas sample. The sampling and circulating gas path is configured to transfer the first mixed gas and/or the second mixed gas into the ion mobility tube for detection.
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公开(公告)号：US20190204271A1
公开(公告)日：2019-07-04
申请号：US16235340
申请日：2018-12-28
Applicant: Nuctech Company Limited , TSINGHUA UNIVERSITY
Inventor： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Ziran ZHAO , Yinong LIU , Yaohong LIU , Ge LI , Jingli XIE , Qiufeng MA , Biao CAO
CPC classification number: G01N27/622 , G01N1/2205 , G01N1/2211 , G01N1/24 , G01N2001/244
Abstract: The present disclosure provides a device for collecting semi-volatile or non-volatile substance, including an air nozzle, a front cavity and a collecting body. The air nozzle is configured to eject air to a sample attachment surface. The front cavity has an upper port. The collecting body is sealingly connected to a lower end of the front cavity, inside of which is provided with a cylindrical cavity and a conical cavity arranged vertically coaxially, and bottom of which is provided with a sample outlet. The collecting body is provided with an air intake passage which is non-coplanar with respect to an axis of the cylindrical cavity and is disposed obliquely downward and inward. The collecting body is further provided with an air exhaust passage one end of which is a discharge port connected to the interior of the cylindrical cavity, the other end is connected to an air pump.
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公开(公告)号：US20190204243A1
公开(公告)日：2019-07-04
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: G01N23/046
CPC classification number: G01N23/046 , G01N2223/33 , G01V5/005
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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139.发明申请公开(公告)号：US20190204188A1
公开(公告)日：2019-07-04
申请号：US16232672
申请日：2018-12-26
Applicant: Tsinghua University , NUCTECH COMPANY LIMITED
Inventor： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Ziran ZHAO , Yinong LIU , Yaohong LIU , Nan BAI , Ge LI , Qiufeng MA , Biao CAO , Weiping ZHU
CPC classification number: G01N1/2214 , B01D53/10 , B01D2259/40098 , G01N1/2205
Abstract: A sampling adsorber, a heat desorption chamber device, a sampling apparatus and an analyzer apparatus. The sampling adsorber includes an outer barrel, which includes an outer barrel first end and an outer barrel second end, and a core located in the outer barrel, the core having a core first end and a core second end, and the outer barrel first end and the core first end are located at a same side of the sampling adsorber. The core includes an adsorbent portion configured to adsorb a sample and a core body portion, the adsorbent portion connected to the core body portion. Sizes of the outer barrel and the core are formed such that a gap is provided between them to allow external gas to enter the gap through the adsorbent portion and to subsequently be discharged from a downstream portion of the gap.
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公开(公告)号：US20190195751A1
公开(公告)日：2019-06-27
申请号：US16232062
申请日：2018-12-26
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Ziran ZHAO , Yinong LIU , Yaohong LIU , Ge LI , Biao CAO , Jingli XIE , Xiaolin ZHAO , Qiufeng MA
CPC classification number: G01N1/24 , G01N1/2205 , G01N1/2211 , G01N1/405 , G01N30/30 , G01N2001/028 , G01N2001/2282 , G01N2001/2288 , G01N2030/146
Abstract: The present disclosure relates to the technical field of safety detection, and in particular to a sample collecting and introducing device and a detection system. The sample collecting and introducing device provided by the present disclosure includes a sampling device for collecting a sample, and a semipermeable membrane device for extracting the sample collected by the sampling device and conveying the extracted sample to detection equipment, wherein the sampling device is provided with an air guide cavity, the air guide cavity is configured to guide airflow carrying the sample to flow to the semipermeable membrane device, the semipermeable membrane device is provided with a semipermeable membrane which is arranged outside the sampling device. In the present disclosure, the size of the semipermeable membrane is no longer limited by the sampling device, and therefore the difficulty of increasing the area of the semipermeable membrane is reduced.
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