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.

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.

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

IPC: G01N1/22 ,  G01N1/24 ,  G01N30/20 ,  B25J9/16

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.

公开(公告)号：US20210141103A1

公开(公告)日：2021-05-13

申请号：US16624753

申请日：2018-05-29

Applicant: Nuctech Company Limited ,  TSINGHUA UNIVERSITY

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Ziran ZHAO ,  Lifeng SUN

IPC: G01T1/20

Abstract: A backscatter detection module includes: a plate-like light-transmitting carrier, two layers of scintillators and a light sensor. The light-transmitting carrier is made of a material that allows fluorescence photons to pass through, and has two light-transmitting planes opposite to each other and at least one light emergent end surface; the light emergent end surface is located between the two light-transmitting planes; the two layers of scintillators are respectively fixedly attached to the two light-transmitting planes; the light sensor is coupled to the light emergent end surface.

公开(公告)号：US20200240961A1

公开(公告)日：2020-07-30

申请号：US16714799

申请日：2019-12-16

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Weiping ZHU ,  Yaohong LIU ,  Qiufeng MA ,  Ge LI ,  Biao CAO ,  Lili YAN

IPC: G01N30/44 ,  G01N30/72

Abstract: The present disclosure discloses a gas chromatograph-ion mobility spectrometry combined equipment, including: a gas chromatograph device for pre-separating a to-be-detected sample to form a pre-separated sample; an ion mobility spectrometry device in fluid communication with an outlet of the gas chromatograph device for detecting the pre-separated sample; and a gas circulating device in fluid communication with a discharged gas interface of the ion mobility spectrometry device for processing a discharged gas from the ion mobility spectrometry device, wherein the gas circulating device is further in gas communication with the gas chromatograph device for conveying a part of the discharged gas to the gas chromatograph device to serve as a carrier gas, which drives the to-be-detected sample to enter the gas chromatograph device. The miniaturization and the portability of the gas chromatograph-ion mobility spectrometry combined equipment are improved.

公开(公告)号：US20190193017A1

公开(公告)日：2019-06-27

申请号：US16232050

申请日：2018-12-26

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 ,  Nan BAI

IPC: B01D53/04 ,  B01D53/02 ,  G01N27/62 ,  G01N30/26

CPC classification number: B01D53/0446 ,  B01D53/025 ,  B01D53/0438 ,  B01D2257/80 ,  B01D2259/40003 ,  B01D2259/40086 ,  B01D2259/40096 ,  G01N27/622 ,  G01N30/26 ,  G01N2030/025

Abstract: The present disclosure relates to a gas purification apparatus and a trace substance detection device. The gas purification apparatus includes a first purification component, a second purification component and a switching component, wherein the switching component can be switched between a first state and a second state, the first purification component and a component to be purified form a gas purification loop in the first state, and the second purification component can provide a regeneration gas for the first purification component in the second state, so that water vapor and impurities in the first purification component are discharged to outside. In the gas purification apparatus, the filtered air is used as the regeneration gas to prevent secondary pollution in a recycling process of the purificant; furthermore, by means of the state switching function of the switching component, the mutual interference between the two working states of purification and regeneration can be prevented, and all the above advantages can improve the reliability of the recycling of the purificant, thereby optimizing the performance and the service life of the gas purification apparatus.

公开(公告)号：US20180164194A1

公开(公告)日：2018-06-14

申请号：US15826098

申请日：2017-11-29

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Ziran ZHAO ,  Ge LI ,  Qiufeng MA

IPC: G01N1/22 ,  G01N33/00

Abstract: It is disclosed a scrubbing and sampling device, a card reader apparatus and a gate apparatus. The scrubbing and sampling device includes: a scrubbing and sampling portion including a first wheel and a second wheel, which are respectively capable of rotating around respective rotating axes, and a scrubbing conveyor belt tensioned by the first wheel and the second wheel and driven by rotation of the first wheel and the second wheel, to move between them; and an desorbing portion configured to desorb properties of an sample that is conveyed into the desorbing portion. The scrubbing conveyor belt is configured to move through the desorbing portion such that the desorbing portion desorbs the sample on the scrubbing conveyor belt when the scrubbing conveyor belt enters the desorbing portion.

公开(公告)号：US20210048376A1

公开(公告)日：2021-02-18

申请号：US16989123

申请日：2020-08-10

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Jianmin LI ,  Shangmin SUN ,  Yaohong LIU ,  Weiping ZHU ,  Qiufeng MA ,  Ge LI ,  Biao CAO ,  Zheng LIANG ,  Ying LI ,  Yu HU

IPC: G01N1/24 ,  G01N27/62

Abstract: A sampling probe, an automatic sampling device, and a container detection system are provided. The sampling probe includes: a mounting base; a housing mounted on the mounting base, a first accommodation chamber having an opening being defined in the housing, and an exhaust hole in communication with the first accommodation chamber and outside of the housing being formed in the housing; a coupling portion formed on an outer edge of the opening of the first accommodation chamber and formed to be hermetically coupled with an air outlet of a container; and a suction device mounted on the housing and configured to suck gas in the container into the first accommodation chamber through the air outlet. The sampling probe may collect the odor of toxic and harmful gases/hazardous chemicals inside the container at the air outlet of the container, without destroying the overall structure of the container.

公开(公告)号：US20180196078A1

公开(公告)日：2018-07-12

申请号：US15868878

申请日：2018-01-11

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Ziran ZHAO ,  Qiufeng MA ,  Ge LI ,  Biao CAO ,  Qi MAO

IPC: G01N35/04 ,  G01N1/02 ,  G01N35/00

Abstract: The present invention discloses a wiping-type sample sampling and feeding device, a card reading apparatus, and a gate machine apparatus. The wiping-type sample sampling and feeding device comprises a thermally desorbing portion for analyzing a substance; a wiping-type sampling portion for wiping the substance on a card or certificate and includes a first wheel, a second wheel and a wiping conveyor belt that travels between the first and second wheels along a first direction; and a card/certificate conveyor portion including a card carrying belt configured to convey a card or certificate along a second direction so that the card or certificate can contact with the wiping conveyor belt during conveyance of the card or certificate, thereby the wiping conveyor belt wipes a surface of the card or certificate, wherein the second direction is substantially perpendicular to the first direction.

公开(公告)号：US20170068003A1

公开(公告)日：2017-03-09

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

IPC: G01T7/00 ,  G01J1/02

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.

Abstract translation: 本发明公开了一种安全检查检测器和货物安全检查系统。 安全检查检测器至少包括电路板，第一壳体，第二壳体，检测模块和连接接口。 检测模块和连接接口安装在电路板上。 第一壳体被按压并连接到电路板的第一表面，并且第二壳体被按压并连接到电路板的第二表面。 第一壳体和第二壳体可以将检测模块和电子设备封装在电路板上，但绕过连接接口，通过利用连接接口实现与相关互连电缆的导出和连接。 这些外壳可用于密封和保护检测器中敏感的电子设备，从而防潮并防止干扰。