公开(公告)号：US09261610B2

公开(公告)日：2016-02-16

申请号：US14574848

申请日：2014-12-18

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Yulan Li ,  Qiufeng Ma ,  Ziran Zhao ,  Yinong Liu ,  Jianping Chang

IPC: G01T1/24 ,  G01T1/36

CPC classification number: G01T1/244 ,  G01T1/24 ,  G01T1/241 ,  G01T1/366

Abstract: The present disclosure provides a High-Purity Germanium (HPGe) detector, comprising: a HPGe single crystal having an intrinsic region exposed surface; a first electrode and a second electrode connected to a first contact electrode and a second contact electrode of the HPGe single crystal respectively; and a conductive guard ring arranged in the intrinsic region exposed surface around the first electrode to separate the intrinsic region exposed surface into an inner region and an outer region. A leakage current derived from the intrinsic region exposed surface of the HPGe detector can be separated from the current of the HPGe detector by the conductive guard ring provided in the surface, thereby suppressing the interference of the surface leakage current.

Abstract translation: 本公开提供了一种高纯锗（HPGe）检测器，包括：具有固有区域暴露表面的HPGe单晶; 分别连接到HPGe单晶的第一接触电极和第二接触电极的第一电极和第二电极; 以及布置在第一电极周围的本征区域暴露表面中的导电保护环，以将本征区域暴露表面分离成内部区域和外部区域。 从HPGe检测器的本征区域暴露表面导出的泄漏电流可以通过设置在表面中的导电保护环与HPGe检测器的电流分离，从而抑制表面泄漏电流的干扰。

公开(公告)号：US10775278B2

公开(公告)日：2020-09-15

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 ,  G06K13/08 ,  G01N33/00 ,  G01N1/02

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：US10663429B2

公开(公告)日：2020-05-26

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

IPC: H01J49/00 ,  G01N27/62 ,  G01N1/22 ,  G01N1/24

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.

公开(公告)号：US10408804B2

公开(公告)日：2019-09-10

申请号：US15276595

申请日：2016-09-26

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Ziran Zhao ,  Weiping Zhu ,  Yaohong Liu ,  Qiufeng Ma ,  Xiang Zou ,  Huishao He ,  Jianping Chang ,  Song Liang

IPC: G01N30/72 ,  G01N23/085 ,  G01B15/00 ,  G01N30/84

Abstract: A darkroom type security inspection apparatus and a method of performing an inspection using the darkroom type security inspection apparatus. An apparatus includes a housing constituting a closed darkroom, and assemblies disposed inside the housing. The assemblies disposed inside the housing include: a sample collecting unit configured to collect a sample, a conveyor unit, and a X-ray detection unit to detect a position of the objected to be inspected, wherein the X-ray detection unit is configured to determine the position of the objected to be inspected within the sampling assembly so that the object to be inspected together with the conveyor unit is conveyed to an expected position; and a sample processing assembly, wherein the assemblies disposed inside the housing are communicated by fittings or connectors.

公开(公告)号：US20190234904A1

公开(公告)日：2019-08-01

申请号：US16376983

申请日：2019-04-05

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Huishao He ,  Qiufeng Ma ,  Weiping Zhu ,  Xiang Zou ,  Jianping Chang ,  Song Liang

IPC: G01N27/62 ,  H01J49/04 ,  G01N1/22 ,  G01N1/02 ,  G01N1/40

Abstract: A detection apparatus and a detection method are disclosed. In one aspect, the detection apparatus includes a sampling device for collecting samples to be checked. It further includes a sample pre-processing device configured to pre-process the sample from the sampling device. It further includes a sample analyzing device for separating samples from the pre-processing device and for analyzing the separated samples. The detection apparatus is miniaturized and highly precise, and is capable of quickly and accurately detecting gaseous phase or particulate substances, and it has applications for safety inspections at airports, ports, and subway stations.

公开(公告)号：US10281432B2

公开(公告)日：2019-05-07

申请号：US15280744

申请日：2016-09-29

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Huishao He ,  Qiufeng Ma ,  Weiping Zhu ,  Xiang Zou ,  Jianping Chang ,  Song Liang

IPC: H01J49/00 ,  G01N27/62 ,  H01J49/04 ,  G01N1/02 ,  G01N1/22 ,  G01N1/40 ,  G01N30/60 ,  G01N30/72 ,  G01N1/42

Abstract: A detection apparatus and a detection method are disclosed. In one aspect, the detection apparatus includes a sampling device for collecting samples to be checked. It further includes a sample pre-processing device configured to pre-process the sample from the sampling device. It further includes a sample analyzing device for separating samples from the pre-processing device and for analyzing the separated samples. The detection apparatus is miniaturized and highly precise, and is capable of quickly and accurately detecting gaseous phase or particulate substances, and it has applications for safety inspections at airports, ports, and subway stations.

公开(公告)号：US10151671B2

公开(公告)日：2018-12-11

申请号：US15238598

申请日：2016-08-16

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Huishao He ,  Qiufeng Ma ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Weiping Zhu ,  Xiang Zou ,  Jianping Chang

IPC: G01N1/24 ,  G01N30/30 ,  G01N1/22

Abstract: A sampling device and a gas curtain guide are disclosed. In one aspect, the sampling device includes a chamber body. The chamber body includes a sample inlet, located at a first end of the chamber body, configured for suction of a sample. The chamber body further includes a sample outlet, located adjacent to a second end opposite to the first end of the chamber body, configured to discharge the sample. The chamber body further includes a gas inflation inlet, in a wall of the chamber body, configured to introduce a swirl gas flow into the chamber body. The chamber body further includes a gas exhaust opening configured to discharge gas so as to, together with the gas inflation inlet, generate a tornado type gas flow in the chamber body, which moves spirally from the first end to the second end of the chamber body.

公开(公告)号：US20160341695A1

公开(公告)日：2016-11-24

申请号：US15115217

申请日：2015-12-24

Applicant: NUCTECH COMPANY LIMITED

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Qiufeng Ma ,  Huishao He ,  Weiping Zhu ,  Xiang Zou ,  Jianping Chang ,  Song Liang

IPC: G01N27/62 ,  G01N30/30 ,  G01N30/46 ,  G01N27/64

CPC classification number: G01N27/622 ,  G01N27/64 ,  G01N30/30 ,  G01N30/46 ,  G01N30/466 ,  G01N2030/3038

Abstract: The present invention discloses a gas analyzing apparatus and a sampling device. The gas analyzing apparatus includes a sampling device and an ion mobility spectrum analysis device. The sampling device includes a multi-capillary column and a temperature control system. The ion mobility spectrum analysis device is adapted for analyzing a gas leaded-in by the sampling device and includes a reaction cavity for reaction between sample molecules and reaction ions, the cavity having a sampling opening for leading-in of the gas. An outlet end of the multi-capillary column is inserted directly into the cavity of the ion mobility spectrum analysis device through the sampling opening of the ion mobility spectrum analysis device.

Abstract translation: 本发明公开了一种气体分析装置和取样装置。 气体分析装置包括取样装置和离子迁移谱分析装置。 采样装置包括多毛细管柱和温度控制系统。 离子迁移谱分析装置适用于分析由采样装置引入的气体，并且包括用于在样品分子和反应离子之间反应的反应腔，空腔具有用于导入气体的取样开口。 多毛细管柱的出口端通过离子迁移谱分析装置的采样口直接插入到离子迁移谱分析装置的空腔中。

公开(公告)号：US09337626B2

公开(公告)日：2016-05-10

申请号：US14577211

申请日：2014-12-19

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Yanchun Wang ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Xiang Zou ,  Qiufeng Ma ,  Junxiao Wang ,  Xianghua Li ,  Jianping Chang

IPC: H01J19/04 ,  H01T19/00 ,  G01N27/62 ,  H01J49/16

CPC classification number: H01T19/00 ,  G01N27/622 ,  H01J49/168

Abstract: The present invention discloses a corona discharge assembly, an ion mobility spectrometer, an computer program and an computer readable storage medium. The corona discharge assembly includes: an ionization discharge chamber, wherein the ionization discharge chamber includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a gas to be analyzed and a trumpet-shaped front port which is conductive to forming a gathered electric field; multiple corona pins, in which on-off of a high voltage can be independently controlled, are installed at the center of the metal corona cylinder in an insulating manner. The present invention further discloses an ion mobility spectrometer using the above-mentioned corona discharge assembly. The present invention can be used to prolong the service life of the integral corona discharge assembly; the discharge voltage of the ion source can be reduced and the discharge stability thereof can be improved; in comparison with the suspended installation of a pin-shaped electrode, since the multiple corona pins are fixed on the PCB, during installation, the position of the electrode can be accurate and stable, thus mass manufacture is easier to achieve.

Abstract translation: 本发明公开了电晕放电组件，离子迁移谱仪，计算机程序和计算机可读存储介质。 电晕放电组件包括：电离放电室，其中电离放电室包括金属电晕圆筒，并且金属电晕圆筒设置有要分析的气体的入口和导电以形成的喇叭形前端口 聚集的电场; 可以独立控制高电压开关的多个电晕针以绝缘方式安装在金属电晕圆筒的中心。 本发明还公开了使用上述电晕放电组件的离子迁移谱仪。 本发明可用于延长整个电晕放电组件的使用寿命; 可以降低离子源的放电电压，提高其放电稳定性; 与销状电极的悬挂安装相比，由于多个电晕针固定在PCB上，所以在安装过程中，电极的位置可以准确稳定，从而更容易实现批量制造。

公开(公告)号：US09231383B2

公开(公告)日：2016-01-05

申请号：US14578326

申请日：2014-12-19

Applicant: NUCTECH COMPANY LIMITED

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Yanchun Wang ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Xiang Zou ,  Qiufeng Ma ,  Junxiao Wang ,  Jianping Chang

IPC: H01J49/00 ,  H01T19/00 ,  H01J49/16 ,  G01N27/62

CPC classification number: H01T19/00 ,  G01N27/622 ,  H01J49/168

Abstract: The present invention discloses a corona discharge assembly, including: an ionization discharge chamber, wherein the ionization discharge chamber includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a gas to be analyzed and an annular piece-shaped port which forms a non-uniform electric field with corona pins and is provided with a circular hole at the middle; a rotating shaft is installed on the cylinder wall of the metal corona cylinder in an insulating manner, the rotating shaft is vertical to the axial line of the metal corona cylinder, and a turntable provided with multiple corona pins at the outer edge is installed at the end part of the rotating shaft the axial line of the metal corona cylinder passes in parallel through the rotation plane of the turntable. The present invention further discloses an ion mobility spectrometer using the above-mentioned corona discharge assembly.

Abstract translation: 本发明公开了一种电晕放电组件，包括：离子化放电室，其中电离放电室包括金属电晕圆筒，金属电晕圆筒设有待分析气体的入口和环形片状端口 其形成具有电晕针的不均匀电场，并在中间设置有圆形孔; 旋转轴以绝缘方式安装在金属电晕圆筒的气缸壁上，旋转轴垂直于金属电晕圆筒的轴线，并且在外边缘处设置有多个电晕针的转盘安装在 旋转轴的端部，金属电晕圆筒的轴线平行通过转台的旋转平面。 本发明还公开了使用上述电晕放电组件的离子迁移谱仪。