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公开(公告)号：US20230236150A1
公开(公告)日：2023-07-27
申请号：US17999201
申请日：2021-05-14
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Jianmin LI , Weiping ZHU , Qiufeng MA , Biao CAO , Lili YAN , Ge LI , Nei YANG
IPC: G01N27/622 , G01N30/20
CPC classification number: G01N27/622 , G01N30/20 , G01N2030/025 , G01N2030/201
Abstract: A trace detection device including: an ion mobility tube ; a sampling gas path module ; a sample injection gas path module configured to introduce a sample carrier gas containing a sample collected by the sampling gas path module toward the ion mobility tube; and a gas chromatography apparatus capable of pre-separating the sample carrier gas, so as to form a pre-separated sample carrier gas; wherein the sample injection gas path module is further configured to be capable of switching between a first mode and a second mode, in the first mode, the sample injection gas path module introduces the sample carrier gas into the ion mobility tube; and in the second mode, the sample injection gas path module introduces the sample carrier gas into the gas chromatography apparatus to pre-separate the sample carrier gas, and the pre-separated sample carrier gas is introduced into the ion mobility tube.
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公开(公告)号：US20210215582A1
公开(公告)日：2021-07-15
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 , G01N1/44 , G01N27/622 , G01N1/22
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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3.发明申请公开(公告)号：US20200253033A1
公开(公告)日：2020-08-06
申请号：US16727639
申请日：2019-12-26
Applicant: Tsinghua University , NUCTECH COMPANY LIMITED , NuRay Technology Co., Ltd
Inventor： Yuanjing LI , Yaohong LIU , Huaping TANG , Jinsheng LIU , Xiying LIU , Zhanfeng QIN , Wei JIA , Jinsong PAN
Abstract: Embodiments of the present disclosure disclose a multi-output high-voltage power supply including a channel selection circuit (103) including a plurality of switches; and a high-voltage power supply module (101) connected to the channel selection circuit (103), wherein the high-voltage power supply module (101) includes a fine adjusting power supply component (110) and a plurality of coarse adjusting power supply components (120-1 to 120-N) connected in series, wherein one high-voltage output terminal of the high-voltage power supply module (101) is connected to a common terminal of the channel selection circuit (103), and the other high-voltage output terminal of the high-voltage power supply module (101) is grounded through a current sampling resistor.
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公开(公告)号：US20190204469A1
公开(公告)日：2019-07-04
申请号：US16234632
申请日：2018-12-28
Applicant: NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Hao YU , Ying LI , Weizhen WANG , Quanwei SONG , Dongyu WANG , Haojie CHI , Jianmin LI , Yulan LI , Chunguang ZONG , Zhiqiang CHEN , Yuanjing LI , Li ZHANG
IPC: G01V5/00 , G01N23/203
CPC classification number: G01V5/0025 , G01N23/203
Abstract: The present disclosure discloses a vehicle-mounted type back scattering inspection system. The vehicle-mounted type back scattering inspection system includes a carriage and a back scattering imaging device, the scanning range of the back scattering imaging device is variable. As the scanning range of the back scattering imaging device of the present disclosure is variably set, the inspection range of the back scattering imaging device can be expanded.
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公开(公告)号：US20190193691A1
公开(公告)日：2019-06-27
申请号：US16233398
申请日：2018-12-27
Applicant: TSINGHUA UNIVERSITY , Nuctech Company Limited
Inventor： Yuan HE , Jianmin LI , Hongqi LI , Yulan LI , Qiangqiang WANG , Yuanjing LI , Zhiqiang CHEN , Li ZHANG
IPC: B60S13/00
CPC classification number: B60S13/00 , B60S5/00 , B62D49/02 , B62D49/0692
Abstract: A fork-arm lift tractor includes a vehicle body, a supporting plate disposed above the vehicle body, a lifting device for driving the supporting plate to be lifted, a front and rear fork-arm assemblies, a front and rear fork-arm drive assemblies. The front fork-arm assembly includes two front fork-arms rotatably disposed at the supporting plate. The rear fork-arm assembly includes two rear fork-arms rotatably disposed at the supporting plate, and the front and rear fork-arms may be deployed or retracted from both sides of the supporting plate. The front fork-arm driving assembly includes a front transmission part, and a front power device disposed at the supporting plate and may drive the front transmission part to move horizontally linearly so as to rotate the two front fork-arms. The rear fork-arm driving assembly has almost the same structure of the front fork-arm driving assembly and is used to rotate the two rear fork-arms.
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Patent Agency Ranking
公开(公告)号：US20170329038A1
公开(公告)日：2017-11-16
申请号：US15411348
申请日：2017-01-20
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Kejun KANG , Zhiqiang CHEN , Yuanjing LI , Ziran ZHAO , Junli LI , Xuewu WANG , Yaohong LIU , Zhi ZENG , Jianping GU , Song LIANG , Bicheng LIU , Guangming XU , Yongqiang WANG
IPC: G01V5/00
CPC classification number: G01V5/0016 , G01N2223/205 , G01T1/167 , G01T5/002 , G01T5/02 , G01V5/0025 , G01V5/0075 , G01V5/0091 , G06K9/6267
Abstract: The present application relates to a method, apparatus and system for inspecting an object based on a cosmic ray, pertaining to the technical field of radiometric imaging and safety inspection. The method includes: recording a movement trajectory of an inspected object by using a monitoring device; acquiring information of charged particles in the cosmic ray by using a position-sensitive detector, the information of charged particles comprising trajectory information of the charged particles; performing position coincidence for the movement trajectory and the trajectory information to determine the object; performing trajectory remodeling for the charged particles according to the information of charged particles; and identifying a material inside the moving object according to the trajectory remodeling. According to the present disclosure, pedestrians who are walking and moving are inspected by using the cosmic ray, and nuclear materials, drugs and explosive materials and the like carried by human bodies may be detected.
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公开(公告)号：US20160018537A1
公开(公告)日：2016-01-21
申请号：US14800635
申请日：2015-07-15
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Lan ZHANG , Yulan LI , Yuanjing LI , Jianqiang FU , Yingshuai DU , Wei ZHANG , Xuming MA , Jun LI
Abstract: The present invention provides a method and apparatus for processing signals of a semiconductor detector, including: acquiring a relationship of a time difference between anode and cathode signals of the semiconductor detector with an anode signal amplitude; obtaining an optimal data screening interval according to the relationship of the time difference between anode and cathode signals of the semiconductor detector with the anode signal amplitude, wherein the optimal data screening interval is an interval where the time difference between the anode and cathode signals is greater than 50 ns; and screening and processing the collected data according to the optimal data screening interval when the semiconductor detector collects data. The present invention better overcomes the inherent crystal defects of the detector, reduces the effect of background noise, increases the energy resolution of the cadmium zinc telluride detector under room temperature, and improves the peak-to-compton ratio.
Abstract translation: 本发明提供了一种用于处理半导体检测器的信号的方法和装置，包括：用阳极信号振幅获取半导体检测器的阳极和阴极信号之间的时间差的关系; 根据半导体检测器的阳极和阴极信号的时间差与阳极信号幅度的关系获得最佳数据筛选间隔，其中最佳数据筛选间隔是阳极和阴极信号之间的时间差较大的间隔 超过50 ns; 并且当半导体检测器收集数据时，根据最佳数据筛选间隔筛选和处理收集的数据。 本发明更好地克服了检测器的固有晶体缺陷，降低了背景噪声的影响，提高了碲化锌碲化镉检测器在室温下的能量分辨率，提高了峰 - 峰比。
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公开(公告)号：US20150048263A1
公开(公告)日：2015-02-19
申请号：US14459408
申请日：2014-08-14
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Kejun KANG , Yuanjing LI , Ying LI , Jianmin LI , Junli LI , Yanli DENG
CPC classification number: G21F3/00 , G01V5/0016 , G21F1/023 , G21F1/042
Abstract: A radiation protection device is disclosed in the embodiment of the present invention. The radiation protection device is used for a system which is configured to perform safety inspection of a cargo or a vehicle by a ray. The radiation protection device comprising: at least one container, and a radiation protection part disposed within the container. The radiation protection material may comprise at least one of concrete, sandstone, and water, or the radiation protection part may comprise a steel-lead protection wall or a concrete protection wall. With the radiation protection device according to the embodiment of the present invention, after the container is transported to the site, it can be directly put in place to be capable of shielding rays without needing operation or with only simple operation. The amount of on-site work, construction time, and construction cost are low.
Abstract translation: 在本发明的实施例中公开了一种辐射防护装置。 辐射防护装置用于被配置为通过射线执行货物或车辆的安全检查的系统。 辐射防护装置包括：至少一个容器和设置在容器内的辐射防护部分。 辐射防护材料可以包括混凝土，砂岩和水中的至少一种，或者辐射防护部分可以包括钢 - 铅保护壁或混凝土保护壁。 根据本发明的实施方式的放射线防护装置，在将容器运送到现场后，可以将其直接放置在能够屏蔽射线的地方，而无需操作或操作简单。 现场工作量，施工时间和施工成本低。
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公开(公告)号：US20140185773A1
公开(公告)日：2014-07-03
申请号：US14136514
申请日：2013-12-20
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Yuanjing LI , Ziran ZHAO , Wanlong WU , Le TANG , Yinong LIU , Yingkang JIN , Wenguo LIU , Shuo CAO , Zhimin ZHENG , Guangwei DING , Ming RUAN , Xiuwei CHEN
IPC: G01N23/203
CPC classification number: G01N23/203 , G01V5/0025
Abstract: A human body security inspection system including a plurality of ray emitting-detecting modules, which are configured to emit X-rays to the object to be inspected and to receive X-rays scattered from the object to be inspected, wherein the ray emitting-detecting modules form an enclosed region with respect to the object to be inspected and security inspection is implemented on the object in the enclosed region.
Abstract translation: 一种人体安全检查系统，包括多个射线发射检测模块，其被配置为向被检查物体发射X射线并且接收从被检查物体散射的X射线，其中，所述射线发射检测 模块相对于待检查对象形成封闭区域，并且在封闭区域中的对象上实施安全检查。
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公开(公告)号：US20230236093A1
公开(公告)日：2023-07-27
申请号：US18001249
申请日：2021-06-07
Applicant: NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Jianmin LI , Weiping ZHU , Ge LI , Nei YANG , Biao CAO , Wei WANG , Xiulin NI , Shengxi LIU , Zheng LIANG
CPC classification number: G01N1/2211 , G01N1/24 , G01N30/20 , B25J9/1697 , G01N2030/201 , G01N30/7206
Abstract: Provided are an odor sniffing device (11) and a vehicle-mounted security inspection apparatus for a container (1). The odor sniffing device (11) includes a primary sampling front end (116), which has a vent adapter (116-1) having a shape matching with a vent of the ventilator of the container, so that when the primary sampling front end (116) fits with the ventilator, the vent adapter (116-1) and the vent generally cooperate to achieve fluid communication. The vehicle-mounted security inspection apparatus (1) may perform imaging inspection and chemical inspection simultaneously.
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