公开(公告)号：US10539531B2

公开(公告)日：2020-01-21

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: 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：US10276359B2

公开(公告)日：2019-04-30

申请号：US15832193

申请日：2017-12-05

Applicant: Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Yanchun Wang ,  Ziran Zhao ,  Xianghua Li ,  Qiufeng Ma ,  Ge Li ,  Biao Cao ,  Qi Mao ,  Xiang Zou

IPC: G01N27/62 ,  H01J49/16 ,  H01J49/00 ,  H01J49/02

Abstract: The present disclosure provides an ion mobility spectrometer, which comprises: a power supply circuit, configured to provide a power supply voltage; a corona discharge configured to generate ions to be subjected to measurement, through corona discharge; an ion migration circuit configured to control migration of the ions; a migration zone structure configured to realize, under control of the ion migration circuit, mobility spectrum measurement of the ions which pass through the migration zone structure; a redundant charge extraction electrode arranged between the corona discharge structure and the migration zone structure, so that the ions which are generated by the corona discharge structure can pass therethrough to reach the migration zone structure; and a redundant charge extraction circuit, wherein the redundant charge extraction electrode is connected to the ground through the redundant charge extraction circuit.

公开(公告)号：US11215626B2

公开(公告)日：2022-01-04

申请号：US16406272

申请日：2019-05-08

Applicant: TSINGHUA UNIVERSITY ,  Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang Chen ,  Ziran Zhao ,  Yinong Liu ,  Yaohong Liu ,  Qiufeng Ma ,  Lili Yan ,  Weiping Zhu ,  Biao Cao

IPC: G01N35/04 ,  G01N25/54 ,  G01N35/10 ,  G01N35/00 ,  G01N1/02

Abstract: The present disclosure provides a gate system for sample detection and a method of sample inspection, which relate to the field of detection and analysis technology. The gate system comprises: an accommodating apparatus configured to accommodate an inserted ticket to be detected; a wipe sampling apparatus including a wipe sampling belt which is configured to drive the ticket to be detected to move within the accommodating apparatus and to conduct a wipe sampling to the ticket; an inspiratory sampling apparatus configured to collect samples dropped from the wipe sampling apparatus; and a detection apparatus configured to detect the samples and output detection results. The gate system for sample detection and the method of sample inspection provided by the present disclosure have a wide range of applications and can perform rapid sampling and detection to those substances that are difficult to be volatilized.

公开(公告)号：US11193860B2

公开(公告)日：2021-12-07

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 ,  G01N1/22 ,  G01N1/44 ,  G01N27/622

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：US11022581B2

公开(公告)日：2021-06-01

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

IPC: G01N27/00 ,  G01N27/622 ,  H01J49/04

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.

公开(公告)号：US20210118656A1

公开(公告)日：2021-04-22

申请号：US16947998

申请日：2020-08-27

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Qingjun Zhang ,  Zhiqiang Chen ,  Yuanjing Li ,  Jianmin Li ,  Yinong Liu ,  Yaohong Liu ,  Guangqin Li ,  Weiping Zhu ,  Ge Li ,  Qiufeng Ma ,  Biao Cao

IPC: H01J49/00 ,  H01J49/04 ,  G01N27/62

Abstract: Embodiments of the present disclosure provide a real-time calibration device, a real-time calibration method and a detection apparatus. The real-time calibration device is in fluid communication with a sample injection pipeline of the apparatus to be calibrated. The real-time calibration device is configured to release a trace amount of calibration agent molecules during a sample injection of the apparatus to be calibrated, so that the trace amount of calibration agent molecules and a sample entering the apparatus to be calibrated are mixed and together enter the apparatus to be calibrated, and information of the sample and the calibration agent is detected by the apparatus to be calibrated, thereby performing a calibration.

公开(公告)号：US20180190482A1

公开(公告)日：2018-07-05

申请号：US15858255

申请日：2017-12-29

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Ziran Zhao ,  Weiping Zhu ,  Huishao He ,  Xianghua Li ,  Qiufeng Ma

IPC: H01J49/06 ,  H01J49/42 ,  G01N27/62

Abstract: The present disclosure provides an ion migration tube and a method of operation the same. The ion migration tube includes an interior space and an ion gate disposed within the interior space, the interior space includes an ionization region having an absolute value of potential V1 and a migration region. An ion gate is disposed between the ionization region and the migration region and includes a first ion gate grid having an absolute value of potential V2 and a second ion gate grid having an absolute value of potential V3, the migration region comprises at least a first migration region electrode having an absolute value of potential V4 and a second migration region electrode having an absolute value of potential V5. When the ion gate is opened, a potential well is formed for ionized ions between the first ion gate grid and the first migration region electrode so as to compress an ion group entering the migration region.

公开(公告)号：US20180188138A1

公开(公告)日：2018-07-05

申请号：US15858829

申请日：2017-12-29

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Qingjun Zhang ,  Yuanjing Li ,  Ziran Zhao ,  Ge Li ,  Biao Cao ,  Qiufeng Ma ,  Linxia Tan

IPC: G01N1/22

Abstract: A sampling device and an inspection apparatus are disclosed. In one aspect, an example gathering and sampling device includes a cylindrical outer housing and an inner housing disposed within the cylindrical outer housing, a cyclone chamber is formed between the cylindrical outer housing and the inner housing to generate a cyclone by injecting a gas flow into the cyclone chamber. The gathering and sampling device further includes an outer chamber body, and a plurality of gas injection orifices formed in the first inner housing end opening of the inner housing and configured to inject a gas towards a substantial center of a circular region defined by an end face of the first outer housing end opening of the cylindrical outer housing.

公开(公告)号：US20170016856A1

公开(公告)日：2017-01-19

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: G01N27/62 ,  H01J49/04

CPC classification number: G01N27/622 ,  G01N1/02 ,  G01N1/2211 ,  G01N1/405 ,  G01N1/42 ,  G01N30/60 ,  G01N30/722 ,  G01N2001/028 ,  H01J49/0422 ,  H01J49/0459 ,  H01J49/0468 ,  G01N30/6043 ,  G01N30/6078

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.

Abstract translation: 公开了一种检测装置和检测方法。 一方面，检测装置包括用于收集要检查的样品的取样装置。 其还包括被配置为从采样装置预处理样品的样本预处理装置。 其还包括用于从预处理装置分离样品并分析分离的样品的样品分析装置。 该检测装置小型化，精度高，能够快速，准确地检测气相或颗粒物质，并具有在机场，港口，地铁站的安全检查的应用。

公开(公告)号：US20160356679A1

公开(公告)日：2016-12-08

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

CPC classification number: G01N1/24 ,  G01N1/2211 ,  G01N30/30

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.

Abstract translation: 公开了一种采样装置和气幕导引装置。 在一个方面，采样装置包括室主体。 腔体包括位于腔室主体的第一端处的样品入口，其构造成用于抽吸样品。 腔室主体还包括样品出口，其位于与腔体主体的第一端相对的第二端附近，被配置为排出样品。 腔室主体还包括气室充气入口，其在腔室主体的壁中，构造成将旋流气流引入腔体。 室体还包括排气口，该气体排出口被构造成排出气体，以便与气体充气入口一起在室主体中产生龙卷风型气流，其从室主体的第一端至第二端螺旋地移动 。