Patents by Inventor Qingjun Zhang

Qingjun Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11371348
    Abstract: The application discloses a pipeline annular self-traveling guide apparatus and a pipeline annular self-traveling guiding method. The pipeline annular self-traveling guide apparatus includes an inner annular groove and an outer annular groove. A first pipeline fixing part is configured on the inner annular groove, a second pipeline fixing part is configured on the outer annular groove, an annular bracket which is configured to rotate freely along a circumferential direction is correspondingly configured between the inner annular groove and the outer annular groove, a pipeline supporting roller group is configured on the annular bracket, and gaps for laying pipelines are reserved between a circumferential surface of the pipeline supporting roller and inner bottom surfaces of the inner annular groove and the outer annular groove.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: June 28, 2022
    Assignees: CHINA RAILWAY TUNNEL GROUP CO., LTD., CHINA RAILWAY TUNNEL STOCK CO., LTD.
    Inventors: Yanwei Zhang, Xinpeng Hu, Feng Li, Li Huang, Guohong Ren, Dabing Che, Wenjuan Wu, Qingjun Zheng, Wenhuan Cao, Bin Chen, Yukai Luo, Xiaoli Li, Renyu Wen
  • Publication number: 20220181057
    Abstract: Disclosed is an expansion valve coil assembly, comprising a coil unit and a housing, wherein the coil unit is provided with a mounting platform, the mounting platform is provided, in a partially protruding manner, with a connecting part, and the housing is sheathed over the connecting part and is fixedly connected to the mounting platform; and a side wall of the connecting part has a concave-convex structure, and the space between an inner side of the housing and the connecting part is filled with a sealing material.
    Type: Application
    Filed: April 14, 2020
    Publication date: June 9, 2022
    Inventors: Lifeng ZHENG, Bin WEI, Qingjun ZENG, Jiyou ZHANG
  • Patent number: 11346808
    Abstract: The present disclosure provides a trace detection device. The trace detection device includes: a box body comprising a main body frame and a top plate, the top plate and the main body frame forming a fully enclosed cavity; an ion migration tube assembly in the cavity and on a first side of the cavity; and a preamplifier and high voltage circuit board in the cavity and on a second side of the cavity, the second side being opposite to the first side.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: May 31, 2022
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Jianmin Li, Yinong Liu, Yaohong Liu, Yanqin Zhao, Lili Yan, Biao Cao, Qiufeng Ma, Ge Li
  • Patent number: 11346807
    Abstract: There are provided an ion mobility spectrometer and a sniffer. The ion mobility spectrometer includes: an ion migration tube; a sampling gas path having a sampling device configured to temporarily store a sample gas collected by a sampling head in a sampling pipe; a sample introduction gas path having two ends in communication with the gas inlet and outlet of the ion migration tube respectively, and configured to introduce a carrier gas within the ion migration tube into the sampling pipe and to carry a sample gas temporarily stored in the sampling pipe into the ion migration tube; and a valve assembly configured to only allow gas to flow from the sampling device to the sampling pipe in a sampling state, and to only allow gas to flow from the ion migration tube through the sampling pipe back to the ion migration tube in a sample introduction state.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: May 31, 2022
    Assignee: Nuctech Company Limited
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Jianmin Li, Yinong Liu, Yaohong Liu, Lili Yan, Biao Cao, Weiping Zhu, Ge Li, Qiufeng Ma, Qi Mao, Nan Bai
  • Patent number: 11320407
    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.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: May 3, 2022
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Weiping Zhu, Yaohong Liu, Qiufeng Ma, Ge Li, Biao Cao, Lili Yan
  • Publication number: 20220006699
    Abstract: An AC obtains configuration information of a global instance and configuration information of an AP instance corresponding to each AP. The AC sends the configuration information of a corresponding AP instance to each AP respectively, so that each AP creates an AP instance based on the received configuration information of the AP instance, and binds an AP identifier to the created AP instance. The AC creates the global instance based on the configuration information of the global instance. The AC binds an AC identifier and an AP identifier of each AP to the global instance.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 6, 2022
    Inventor: Qingjun Zhang
  • Patent number: 11215626
    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.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: January 4, 2022
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Qiufeng Ma, Lili Yan, Weiping Zhu, Biao Cao
  • Publication number: 20210404988
    Abstract: There are provided an ion mobility spectrometer and a sniffer. The ion mobility spectrometer includes: an ion migration tube; a sampling gas path having a sampling device configured to temporarily store a sample gas collected by a sampling head in a sampling pipe; a sample introduction gas path having two ends in communication with the gas inlet and outlet of the ion migration tube respectively, and configured to introduce a carrier gas within the ion migration tube into the sampling pipe and to carry a sample gas temporarily stored in the sampling pipe into the ion migration tube; and a valve assembly configured to only allow gas to flow from the sampling device to the sampling pipe in a sampling state, and to only allow gas to flow from the ion migration tube through the sampling pipe back to the ion migration tube in a sample introduction state.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 30, 2021
    Applicant: NUCTECH COMPANY LIMITED
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Jianmin LI, Yinong LIU, Yaohong LIU, Lili YAN, Biao CAO, Weiping ZHU, Ge LI, Qiufeng MA, Qi MAO, Nan BAI
  • Patent number: 11193860
    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.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: December 7, 2021
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Lili Yan, Ge Li, Qiufeng Ma
  • Publication number: 20210215582
    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.
    Type: Application
    Filed: December 10, 2018
    Publication date: July 15, 2021
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Lili YAN, Ge LI, Qiufeng MA
  • Patent number: 11022581
    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.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: June 1, 2021
    Assignees: NUCTECH COMPANY LIMITED, Tsinghua University
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Jianmin Li, Yaohong Liu, Weiping Zhu, Qiufeng Ma, Biao Cao, Ge Li, Wei Wang, Lili Yan, Guangqin Li
  • Publication number: 20210141103
    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.
    Type: Application
    Filed: May 29, 2018
    Publication date: May 13, 2021
    Applicants: Nuctech Company Limited, TSINGHUA UNIVERSITY
    Inventors: Qingjun ZHANG, Yuanjing LI, Ziran ZHAO, Lifeng SUN
  • Patent number: 10989689
    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.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: April 27, 2021
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Weiping Zhu, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Qiufeng Ma, Ge Li, Biao Cao, Nan Bai
  • Publication number: 20210118656
    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.
    Type: Application
    Filed: August 27, 2020
    Publication date: April 22, 2021
    Inventors: Qingjun Zhang, Zhiqiang Chen, Yuanjing Li, Jianmin Li, Yinong Liu, Yaohong Liu, Guangqin Li, Weiping Zhu, Ge Li, Qiufeng Ma, Biao Cao
  • Publication number: 20210055267
    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.
    Type: Application
    Filed: May 17, 2019
    Publication date: February 25, 2021
    Applicant: Nuctech Company Limited
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Honghui XIN, Biao CAO, Nan BAI, Qiufeng MA
  • Publication number: 20210048376
    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.
    Type: Application
    Filed: August 10, 2020
    Publication date: February 18, 2021
    Applicants: NUCTECH COMPANY LIMITED, Tsinghua University
    Inventors: 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
  • Publication number: 20210025849
    Abstract: The present disclosure provides a trace detection device. The trace detection device includes: a box body comprising a main body frame and a top plate, the top plate and the main body frame forming a fully enclosed cavity; an ion migration tube assembly in the cavity and on a first side of the cavity; and a preamplifier and high voltage circuit board in the cavity and on a second side of the cavity, the second side being opposite to the first side.
    Type: Application
    Filed: July 21, 2020
    Publication date: January 28, 2021
    Applicants: NUCTECH COMPANY LIMTED, Tsinghua University
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Jianmin LI, Yinong LIU, Yaohong LIU, Yanqin ZHAO, Lili YAN, Biao CAO, Qiufeng MA, Ge LI
  • Patent number: 10827526
    Abstract: There is provided a method of controlling data transmission in a wireless mesh network including a plurality of nodes capable of transmitting and receiving data packets. The method includes providing a frame comprising a plurality of time slots for data transmission, classifying the plurality of time slots into a plurality of sets of time slots, and determining, at a node of the plurality of nodes, a set of time slots amongst the plurality of sets of time slots for the node to transmit data packets, the set of time slots being determined based on a hop count associated with the node. There is also provided corresponding node(s) in a wireless mesh network configured to perform data transmission in the above manner.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: November 3, 2020
    Assignee: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Qingjun Zhang, Yuen Sam Kwok, Alvis Kim Hoong Lee
  • Patent number: 10809394
    Abstract: The present disclosure provides a dual-energy detection apparatus and method. The dual-energy detection apparatus includes an X-ray source configured to send a first X-ray beam to an object to be measured; a scintillation detector configured to work in an integration mode, and receive a second X-ray beam penetrating through the object to be measured to generate a first electrical signal; a Cherenkov detector configured to be located behind the scintillation detector, work in a counting mode, and receive a third X-ray beam penetrating through the scintillation detector to generate a second electrical signal; and a processor configured to output image, thickness and material information of the object to be measured according to the first electrical signal and the second electrical signal. The dual-energy detection method provided by the present disclosure may acquire an image of the object to be measured that is clearer and contains more information.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: October 20, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Shuwei Li, Qingjun Zhang, Xiang Zou, Bozhen Zhao, Junxiao Wang, Weibin Zhu, Yongqiang Wang, Wenjian Zhang
  • Patent number: 10794923
    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.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: October 6, 2020
    Assignees: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITY
    Inventors: Qingjun Zhang, Yuanjing Li, Ziran Zhao, Qiufeng Ma, Ge Li, Biao Cao, Qi Mao