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公开(公告)号：US20140185743A1
公开(公告)日：2014-07-03
申请号：US14140058
申请日：2013-12-24
Applicant: Nuctech Company Limited
Inventor： Jinyu ZHANG , Bin SANG , Zhanjun DUAN , Li ZHANG , Ziran ZHAO
IPC: G01V5/00
CPC classification number: G01V5/005 , G01N23/046 , G01N2223/20 , G01N2223/419 , G01N2223/5015 , G01T1/2985
Abstract: A stationary CT apparatus and a method of controlling the same. The stationary CT apparatus includes: a scanning passage; a stationary carbon nanotube X-ray source arranged around the scanning passage and comprising a plurality of ray emission focal spots; and a plurality of stationary detector modules arranged around the scanning passage and disposed opposite the X-ray source. At least some of the plurality of detector modules are arranged in a substantially L shape or a substantially Π shape when viewed in a plane intersecting the scanning passage. Reconstruction of the CT apparatus without a rotary gantry is achieved and special substances in an object under inspection is identified by optimizing design of the carbon nanotube X-ray source and the detector device. The invention ensures that the stationary gantry type CT system has a small size and a high accuracy and is particularly suitable for safety inspection of baggage.
Abstract translation: 固定CT装置及其控制方法。 固定CT装置包括：扫描通道; 固定碳纳米管X射线源，其布置在所述扫描通道周围并且包括多个射线发射焦斑; 以及多个固定检测器模块，其布置在扫描通道周围并且设置成与X射线源相对。 多个检测器模块中的至少一些被布置成大致L形或基本上为＆P; 在与扫描通道相交的平面中观察时的形状。 通过优化碳纳米管X射线源和检测器设备的设计，可以实现没有旋转台架的CT设备的重建，并检测被检查物体中的特殊物质。 本发明确保了固定式龙门式CT系统的尺寸小，精度高，特别适用于行李的安全检查。
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公开(公告)号：US20230154942A1
公开(公告)日：2023-05-18
申请号：US18054270
申请日：2022-11-10
Applicant: NUCTECH COMPANY LIMITED , SHENMUTEK COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Ziran ZHAO , Shoulu JIANG , Xuming MA
IPC: H01L27/144 , H01L23/544 , H01L31/0232 , H01L31/18
CPC classification number: H01L27/1446 , H01L23/544 , H01L31/02327 , H01L31/18 , H01L2223/54426
Abstract: Provided are a method of manufacturing a terahertz detection device including detectors and lenses arranged in an array and a terahertz detection apparatus. An example method includes forming detectors in a first area of a first surface of a base substrate through a double-sided photoetching process to form a detector array, and providing at least one first alignment mark in a second area of the first surface of the base substrate. A plurality of lens mounting parts are formed in a third area of a second surface of the base substrate through the double-sided photoetching process, and at least one second alignment mark is provided in a fourth area of the second surface of the base substrate. The lenses are mounted to the lens mounting parts to form the detection device. The first alignment mark is aligned with the second alignment mark by using a double-sided photoetching machine.
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公开(公告)号：US20210055267A1
公开(公告)日：2021-02-25
申请号：US16622553
申请日：2019-05-17
Applicant: Nuctech Company Limited
Inventor： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Ziran ZHAO , Yinong LIU , Yaohong LIU , Honghui XIN , Biao CAO , Nan BAI , Qiufeng MA
IPC: G01N30/02
Abstract: The present disclosure relates to an article inspection system and method, an electronic device, and a storage medium, and relates to the field of security inspection technology. The system includes: a pre-concentration sampling module configured to concentrate and sample gas molecule of the article under inspection to obtain a sample; a gas chromatography module; an internal circulation gas path module; and an ion migration tube module connected to the internal circulation gas path module and configured to form a fingerprint spectrum of the article under inspection from a spectrum of the pre-separated sample molecules, so as to identify a kind of the article under inspection according to the fingerprint spectrum. The present disclosure improves the efficiency and accuracy of article inspection, and realizes intelligent inspection of articles.
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公开(公告)号：US20200210785A1
公开(公告)日：2020-07-02
申请号：US16725926
申请日：2019-12-23
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Yanjie YAO , Yongchun LIU , Yan ZHANG , Ziran ZHAO , Li ZHANG , Yuxiang XING
Abstract: Empty container identification method and system are disclosed. The method includes: obtaining customs declaration information, and finding out an vehicle declared as an empty container or an empty vehicle from the customs declaration information; performing X-ray inspection on the vehicle to acquire a transmission image of the vehicle; inputting the transmission image into an empty container identification model obtained by pre-training, so that the empty container identification model determines candidate regions of the transmission image, and performs post-processing analysis on the candidate regions to obtain an image identification result; and comparing the image identification result with the corresponding customs declaration information to determine whether or not the image identification result is consistent with the customs declaration information.
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公开(公告)号：US20200150086A1
公开(公告)日：2020-05-14
申请号：US16627434
申请日：2019-01-25
Applicant: TSINGHUA UNIVERSITY , Nuctech Company Limited
Inventor： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Ziran ZHAO , Yinong LIU , Yaohong LIU , Honghui XIN , Biao CAO , Nan BAI , Wei WANG , Qiufeng MA
Abstract: A gas path flow monitoring apparatus for an ion mobility spectrometer includes: an ion migration tube, a sensor group, and monitoring device. The ion migration tube has a drift gas inlet, a carrier gas inlet for a sample gas, and an exhaust outlet. The sensor group comprises a drift gas intake quantity sensor connected to the drift gas inlet, a carrier gas intake quantity sensor connected to the carrier gas inlet, and an exhaust quantity sensor connected to the exhaust outlet. The monitoring device is connected to the sensor group to monitor a drift gas intake quantity sensed by the drift gas intake quantity sensor, a carrier gas intake quantity sensed by the carrier gas intake quantity sensor, and an exhaust quantity sensed by the exhaust quantity sensor.
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Patent Agency Ranking
公开(公告)号：US20190317240A1
公开(公告)日：2019-10-17
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
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 configured to carry an object to be inspected, the inspection station defining an inspection space which is located above the inspection station and is used for accommodating the object to be inspected; a rotational supporting apparatus which is disposed around the inspection space in a plane parallel to a first direction and is rotatable around the inspection space in a detection state; a plurality of X-ray sources located on the rotational supporting apparatus and configured to transmit X-rays to pass through the inspection space; and a plurality of X-ray receiving apparatuses in one-to-one correspondence to the plurality of X-ray sources, the plurality of X-ray receiving apparatuses being located on the rotational supporting apparatus opposite to the plurality of X-ray sources respectively and configured to collect the X-rays passing through the inspection space, wherein the plurality of X-ray sources and the plurality of X-ray receiving apparatuses are rotational synchronously with the rotational supporting apparatus.
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37.发明申请公开(公告)号：US20190204270A1
公开(公告)日：2019-07-04
申请号：US16235315
申请日：2018-12-28
Applicant: Nuctech Company Limited , TSINGHUA UNIVERSITY
Inventor： Qingjun ZHANG , Weiping ZHU , Yuanjing LI , Zhiqiang CHEN , Ziran ZHAO , Yinong LIU , Yaohong LIU , Qiufeng MA , Ge LI , Biao CAO , Nan BAI
CPC classification number: G01N27/622 , G01N30/20 , G01N30/6026 , G01N2030/025
Abstract: A gas chromatography-ion mobility spectrometry detector and a hyphenated apparatus, the gas chromatography-ion mobility spectrometry detector comprises a gas chromatography mechanism and an ion mobility spectrometry mechanism. The gas chromatography mechanism comprises a chromatographic column and a sample injection port. The ion mobility spectrometry mechanism comprises a mobility tube and a connecting body, while a metal connection plate of the connecting body comprises a chromatographic metal plate, an ion mobility metal plate and a semipermeable membrane; on the ion mobility metal plate there are provided an ion mobility sample and carrier gas inlet, an ion mobility sample chamber and a sample injection port; the chromatography sample chamber and the ion mobility sample chamber are separated by semipermeable membrane.
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公开(公告)号：US20180179658A1
公开(公告)日：2018-06-28
申请号：US15843666
申请日：2017-12-15
Applicant: Nuctech Company Limited
Inventor： Yongqiang WANG , Qingjun ZHANG , Yuanjing LI , Ziran ZHAO , Jianping CHANG , Yanchun WANG , Lifeng SUN , Nan BAI , Xingliang ZHAI
CPC classification number: C25D13/02 , C08K3/14 , C08K2003/387 , C09D5/4488 , C09D5/4492 , C09D7/61 , C25D13/12 , C25D13/20 , C25D13/22 , G01T3/00
Abstract: the present invention provides a method for forming a sensitive film for neutron detection, wherein the sensitive film is formed by electrophoresis coating, the liquid used for electrophoresis coating includes neutron sensitive material, electrophoresis paint and deionized water, and the neutron sensitive material is 10B single substance, 10B compound or mixture containing 10B. The sensitive film for neutron detection has the high detection efficiency because of the high content of 10B. The sensitive film for neutron detection has the uniform and stable film thickness, and excellent consistency. The production efficiency and the cost of the sensitive film are improved.
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公开(公告)号：US20170329039A1
公开(公告)日：2017-11-16
申请号：US15411359
申请日：2017-01-20
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Kejun KANG , Jianping CHENG , Zhiqiang CHEN , Ziran ZHAO , Junli LI , Xuewu WANG , Zhi ZENG , Qingjun ZHANG , Jianping GU , Xi YI , Bicheng LIU , Guangming XU , Yongqiang WANG
IPC: G01V5/00
CPC classification number: G01V5/0075 , G01V5/0016 , G01V5/0091
Abstract: The present disclosure relates to a method, a device and a system for inspecting a moving object based on cosmic rays, pertaining to the field of radiation imaging and safety inspection techniques. The method includes: detecting whether a speed of the inspected moving object is within a preset range; recording a motion trajectory of the moving object with a monitoring device; acquiring information about charged particles in the cosmic rays with a position sensitive detector, the information about charged particles including track information of the charged particles; determining the moving object by matching positions of the motion trajectory and the track information; reconstructing the track of the charged particles according to the information about the charged particles; and recognizing the material inside the moving object based on the track reconstruction.
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公开(公告)号：US20170184515A1
公开(公告)日：2017-06-29
申请号：US15278470
申请日：2016-09-28
Applicant: Nuctech Company Limited
Inventor： Qingjun ZHANG , Yuanjing LI , Shuwei LI , Ziran ZHAO , Weibin ZHU , Junxiao WANG , Jianhua LI
IPC: G01N23/087 , G01T1/20
CPC classification number: G01N23/087 , G01N2223/202 , G01N2223/501 , G01N2223/505 , G01T1/2008 , G01T1/2018
Abstract: The present application relates to a dual-energy detection method, system and apparatus. The apparatus includes: a first pixel detector array proximal to a ray source, configured to detect ray source photons having relatively low energy; and a second pixel detector array distal from the ray source, configured to detect ray source photons having relatively high energy; wherein the first pixel detector array includes a plurality of rows of first pixel detectors, the first pixel detector including a first sensitive medium, a first photosensitive device, a first incidence plane, and a first window; the second pixel detector array includes a single row of second pixel detectors, the second pixel detector including a second sensitive medium, a second photosensitive device, a second incidence plane, and a second window; and each of the second pixel detectors has the same pixel area as corresponding plurality of first pixel detectors thereof.
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