Patents by Inventor Yuanjing Li

Yuanjing Li 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: 11054542
    Abstract: Embodiments of the disclosure provide a multi-ray-source accelerator and an inspection method. The multi-ray-source accelerator includes: a plurality of acceleration tubes, each acceleration tube of the plurality of acceleration tubes including an acceleration tube body that defines at least one cavity, the plurality of acceleration tubes being arranged in at least one row along a straight line or an arc and connected in series with each other; and a microwave unit configured to provide a microwave field to the plurality of acceleration tubes. The plurality of acceleration tubes are arranged to allow the microwave unit to provide the microwave field from an acceleration tube at one end of the plurality of acceleration tubes so as to accelerate electron beams in cavities of all the acceleration tubes.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: July 6, 2021
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Kejun Kang, Huaibi Chen, Yaohong Liu, Chuanxiang Tang, Yuanjing Li, Hao Zha, Liang Zhang
  • Publication number: 20210203180
    Abstract: An embodiment of the present disclosure discloses a wireless charging device comprising a wireless receiving module, a controller, a first charging module, and a second charging module. The wireless receiving module is configured to receive a wireless charging signal in response to the wireless charging device being in a wireless sensing area, transmit a state indication signal to the controller, receive a charging indication signal from the controller, and determine whether to transmit the wireless charging signal to the first charging module according to the charging indication signal.
    Type: Application
    Filed: January 21, 2020
    Publication date: July 1, 2021
    Inventors: Zhiqiang Chen, Yuanjing Li, Xianghao Wu, Yongning Chen
  • Patent number: 11022569
    Abstract: A low-angle self-swinging type computed tomography (CT) device is provided, having an X-ray accelerator and a plurality of rows of detectors and includes a slip ring, such that the slip ring with the accelerator and the detectors thereon is capable of performing a single-pendulum reciprocating movement while an object to be inspected passes through the slip ring, a three-dimensional CT image of the object is displayed, thereby achieving accurate inspection for large-scale objects, such as van containers.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: June 1, 2021
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Kejun Kang, Zhiqiang Chen, Yuanjing Li, Li Zhang, Ziran Zhao, Yaohong Liu, Jianping Gu, Liang Li, Yuxiang Xing
  • Patent number: 11026319
    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.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: June 1, 2021
    Assignees: Tsinghua University, NUCTECH COMPANY LIMITED, NuRay Technology Co., Ltd
    Inventors: Yuanjing Li, Yaohong Liu, Huaping Tang, Jinsheng Liu, Xiying Liu, Zhanfeng Qin, Wei Jia, Jinsong Pan
  • 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: 10996369
    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.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: May 4, 2021
    Inventors: Hao Yu, Ying Li, Weizhen Wang, Quanwei Song, Dongyu Wang, Haojie Chi, Jianmin Li, Yulan Li, Chunguang Zong, Zhiqiang Chen, Yuanjing Li, Li Zhang
  • 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
  • Patent number: 10983243
    Abstract: A human body security inspection apparatus, a method of operating the same, and an associated filter device are disclosed. The human body security inspection apparatus includes a radiation beam exit configured for emitting a radiation beam; a beam guiding box configured for guiding the radiation beam; and a filter device configured between the radiation beam exit and the beam guiding box. The filter device includes a housing and a filter cage having a central axis. The filter cage is formed by arranging two or more pairs of filtering sheets, which are made of different materials and/or have different thicknesses, in an encircling way. The filter cage is rotatable about its central axis such that at least one pair of filtering sheets is capable of filtering the radiation beam to adjust an outputted dosage of the radiation beam of the human body security inspection apparatus.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 20, 2021
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Wanlong Wu, Ming Ruan, Yingkang Jin, Guangwei Ding, Zongjun Shen, Jiajiang Zhao
  • Patent number: 10969346
    Abstract: An X-ray product quality automatic inspection device of the present invention comprises: a distributed X-ray source having a plurality of targets and being able to generate X-rays for irradiating an inspected product from the plurality of targets in a predetermined sequence; a detector for receiving the X-rays generated by the distributed X-ray source and outputting a signal representing characteristics of the received X-rays; a transport device for carrying the inspected product to pass through an X-ray radiation region; and a power supply and control device, which is used to supply power to and control the X-ray product quality automatic inspection device, to form characteristic information of the inspected product according to the signal from the detector and to provides an inspection and analysis result of the inspected product according to the characteristic information.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: April 6, 2021
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Huaping Tang, Zhiqiang Chen, Yuanjing Li, Zhuoyan Liu, Yonggang Wang, Zhanfeng Qin
  • Patent number: 10955572
    Abstract: The present disclosure relates to a data processing method and device. The data processing method comprises steps of: performing detector response calibration based on a detector response obtained by an incidence of rays with known energy into a detector to obtain a detector response model; obtaining a photon counting model of the detector between incident energy spectrum data of the detector and detected energy spectrum data of the detector based on the detector response model; and performing a deconvolution operation on counts of photons in respective energy regions in the detected energy spectrum data of the detector based on the photon counting model of the detector, to obtain real counts of photons in respective energy regions in the incident energy spectrum data of the detector.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: March 23, 2021
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Li Zhang, Zhiqiang Chen, Sen Wang, Xiaofei Xu, Yuanjing Li, Xin Jin
  • Patent number: 10948427
    Abstract: The present disclosure provides a scanned image correction apparatus, method and a mobile scanning device. The apparatus includes an image collector, an arm swing detector, and an image processor. The image collector is configured to collect a scanned image of an object under inspection during a scanning process of scanning the object under inspection by the mobile scanning device, and determine an image parameter of the scanned image. The arm swing detector is disposed at a monitor point on a detector arm of the mobile scanning device, and configured to detect a displacement offset of the detector arm in a specified direction and build an arm swing model of the detector arm. The image processor is configured to determine a change relationship between the image parameter of the scanned image and the displacement offset of the detector arm, and correct the scanned image based on the change relationship.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: March 16, 2021
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Ke Li, Jianmin Li, Weifeng Yu, Yulan Li, Xuejing Yang, Yuanjing Li, Chunguang Zong, Zhiqiang Chen, Li Zhang
  • Patent number: 10946820
    Abstract: The present disclosure discloses an in-vehicle detection system and power supply system and power supply controller, which relates to the power supply control field. The power supply system comprises a low-power generator; a battery pack for supplying power to the in-vehicle detection system; a charger electrically connected to the low-power generator and the battery pack, respectively; and a power supply controller electrically connected to the battery pack and the low-power generator, respectively.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: March 16, 2021
    Inventors: Jianmin Li, Hao Yu, Zhiqiang Chen, Yuanjing Li, Yulan Li, Li Zhang, Jingyu Gu, Dongyu Wang
  • Patent number: 10935691
    Abstract: The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: March 2, 2021
    Inventors: Kejun Kang, Jianmin Li, Xiulin Ni, Yulan Li, Yuanjing Li, Zhiqiang Chen, Li Zhang, Liang Li, Xiang Zou, Weifeng Yu, Hejun Zhou, Chunguang Zong
  • 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
  • Publication number: 20210018649
    Abstract: Embodiments of the disclosure provide a multi-ray-source accelerator and an inspection method. The multi-ray-source accelerator includes: a plurality of acceleration tubes, each acceleration tube of the plurality of acceleration tubes including an acceleration tube body that defines at least one cavity, the plurality of acceleration tubes being arranged in at least one row along a straight line or an arc and connected in series with each other; and a microwave unit configured to provide a microwave field to the plurality of acceleration tubes. The plurality of acceleration tubes are arranged to allow the microwave unit to provide the microwave field from an acceleration tube at one end of the plurality of acceleration tubes so as to accelerate electron beams in cavities of all the acceleration tubes.
    Type: Application
    Filed: July 13, 2020
    Publication date: January 21, 2021
    Applicant: Nuctech Company Limited
    Inventors: Kejun Kang, Huaibi Chen, Yaohong Liu, Chuanxiang Tang, Yuanjing Li, Hao Zha, Liang Zhang
  • Patent number: 10895660
    Abstract: The present disclosure discloses a vehicle-mounted type back scattering inspection system. The back scattering imaging device has a vehicle-mounted working state and a ground working state, and in the vehicle-mounted working state, the back scattering imaging device performs inspection work in a carriage; in the ground working state, the back scattering imaging device performs the inspection work on the ground at the outside of the carriage; and the back scattering imaging device is separately arranged relative to the carriage and is movable between the carriage and the ground to switch between the vehicle-mounted working state and the ground working state.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: January 19, 2021
    Inventors: Hao Yu, Ying Li, Weizhen Wang, Quanwei Song, Dongyu Wang, Haojie Chi, Jianmin Li, Yulan Li, Chunguang Zong, Zhiqiang Chen, Yuanjing Li, Li Zhang