Patents Assigned to Nuctech Company Limited
  • 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: 10896527
    Abstract: A method and device for reconstructing a CT image and a storage medium are disclosed. CT scanning is performed on an object to be inspected to obtain projection data. The projection data is processed using a first convolutional neural network to obtain processed projection data. The first convolutional neural network comprises a plurality of convolutional layers. A back-projection operation is performed on the processed projection data to obtain a reconstructed image.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: January 19, 2021
    Assignees: Tsinghua University, NUCTECH COMPANY LIMITED
    Inventors: Yuxiang Xing, Li Zhang, Jianmin Li, Zhiqiang Chen, Jianping Gu
  • Patent number: 10861686
    Abstract: Embodiments of the present disclosure provide an automatic calibration device for an ion migration spectrometer and an ion migration spectrometer. The automatic calibration device includes: a reservoir configured to store liquid calibration sample therein; and an automatic transfer portion communicated with the reservoir and configured to transfer the liquid calibration sample in the reservoir.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: December 8, 2020
    Assignee: Nuctech Company Limited
    Inventors: Yangtian Zhang, Guangqin Li, Bin Xue, Zhanhong Jia
  • Patent number: 10852187
    Abstract: The disclosure provides a Raman spectrum detection apparatus, including: a laser configured to emit laser light to an object to be detected; a Raman spectrometer configured to receive Raman light from the object; an imaging device configured to obtain an image of the object; and a controller configured to control an operation of the detection apparatus based on grayscales of the image. There is further provided a Raman spectrum detection method.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: December 1, 2020
    Assignee: Nuctech Company Limited
    Inventors: Haihui Liu, Hongqiu Wang, Jianhong Zhang, Jiaqian Zuo
  • Publication number: 20200354148
    Abstract: The embodiments of the present disclosure disclose a self-service express cabinet and a package delivery method. The self-service express cabinet may include: a cabinet body including a sending window and a chamber, wherein the sending window may be connected with the chamber, and the sending window may be disposed on a surface of the cabinet body; a human-machine interaction device disposed on the cabinet body for information interaction with a user; an inspection device disposed in the chamber and capable of performing security inspection on a package dropped into the chamber for delivery, wherein the inspection device may have a receiving end and an output end, and at least part of the receiving end may be located within a scope of a forward projection of the sending window; and at least one storage component disposed in the chamber and corresponding to the output end.
    Type: Application
    Filed: May 6, 2020
    Publication date: November 12, 2020
    Applicant: Nuctech Company Limited
    Inventors: Xin Xue, Zhongrong Yang, Qiwang Gao, Bo Tang
  • Patent number: 10832397
    Abstract: The present application relates to a method of assisting analysis of a radiation image and a system using the same, which belongs to the field of image processing. A method of assisting analysis of a radiation image includes: acquiring a radiation image to be analyzed; acquiring customs declaration information of the radiation image to be analyzed; acquiring a feature-matched historical image from a typical image library according to the radiation image to be analyzed; and/or acquiring a standard image and/or detailed customs declaration information of the standard image according to the customs declaration information of the radiation image to be analyzed. The method of assisting analysis of a radiation image and the system using the same may assist an image inspection person to judge whether or not the current radiation image carries violation items, whether or not a concealing or missing report occurs and so on.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: November 10, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Zhiqiang Chen, Yuanjing Li, Xianghao Wu, Jundi Dai, Yange Du, Limin Liu
  • Patent number: 10825643
    Abstract: The present application discloses an accelerator system for mineral component analysis and system and method for mineral component analysis. The accelerator system includes an electron gun for generating an electron beam; an accelerating tube for accelerating an electron beam emitted by the electron gun to a predetermined energy; a composite target for generating a radioactive ray on the composite target after receiving bombardment of the electron beam; and a shielding mechanism for shielding the radioactive ray.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: November 3, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Yaohong Liu, Liang Zhang, Xiaotong Zhang, Feng Gao
  • Patent number: 10823678
    Abstract: A detection apparatus includes: a laser configured to emit laser light towards an object to be detected; a Raman spectrometer configured to receive a Raman light signal from the object; a light sensor configured to receive portions of the laser light reflected and scattered by the object under irradiation of the laser light, and to determine power of the received portions of the laser light; and a controller configured to control an operation of the detection apparatus based on the power determined by the light sensor. Further, there is provided a detection method using the above detection apparatus.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 3, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Haihui Liu, Hongqiu Wang, Jianhong Zhang
  • Patent number: 10823676
    Abstract: The present disclosure relates to a non-contact type security inspection and method, the system including: a laser source for emitting probe light beams which penetrate through a container or a packaging and are irradiated onto an inspected object contained in the container or the packaging; an optical collection device for collecting an exciting light excited by the probe light beams on the inspected object; a spectrum analyzer for analyzing spectral characteristics of the exciting light collected by the optical collection device so as to determine characteristics of the inspected object; and a shielding apparatus for preventing at least part of the exciting light excited by the probe light beams on the container or the packaging from entering an induction area of the optical collection device.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 3, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Ankai Wang, Hongqiu Wang, Yumin Yi, Haihui Liu, Jianhong Zhang
  • Patent number: 10818464
    Abstract: An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: October 27, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Wenhui Huang, Qingxiu Jin, Cong Xu, Luming Zhang, Donghai Liu, Cheng Song, Peidong Wu, Qun Luo, Chengjun Tan, Shuo Wang
  • Patent number: 10810437
    Abstract: The present disclosure relates to a security check system and method. The present disclosure provides a security check system for identifying objects of interest from multiple objects, comprising: an object-of-interest determining device for determining whether an object is an object of interest; an image mark applying device for acquiring images related to selected objects among the multiple objects and recording image marks of the selected objects; and a mark detecting device for detecting the image marks, wherein the security check system is configured to identify whether the object is the object of interest based on the detection of the mark detecting device and outputs a warning accordingly.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: October 20, 2020
    Assignee: Nuctech Company Limited
    Inventors: Zhiqiang Chen, Li Zhang, Gang Peng, Zhisheng Dai, Yunda Sun, Dong Li
  • 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: 10796436
    Abstract: An inspection apparatus and a method for segmenting an Image of a vehicle are disclosed. An X-ray transmission scanning is performed on the vehicle to obtain a transmission image. Each pixel of the transmission image is labeled with a category tag, by using a trained convolutional network. Images of respective parts of the vehicle are determined according to the category tag for each pixel. With the above solutions, it is possible to segment the images of respective parts of a vehicle more accurately in the situations that are complicated or have large variety kinds of vehicles.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: October 6, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Chuanhong Huang, Qiang Li, Jianping Gu, Yaohong Liu, Ziran Zhao
  • 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
  • Patent number: 10782246
    Abstract: A movable ray inspection system used to be mounted in a container yard to inspect an object within a container is provided. The movable ray inspection system includes: a ray generator device configured to emit a ray, a ray receiving device configured to receive the ray, and at least one chamber for receiving the ray generator device and the ray receiving device therein. Each of the at least one chamber is configured to be a standard container or a chamber which has a same shape, a same size and a same structure as a standard container such that the movable ray inspection system is adapted to be stacked in the container yard.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: September 22, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Chunguang Zong, Ying Li, Hejun Zhou, Quanwei Song, Jianmin Li, Yulan Li, Yuanjing Li, Li Zhang, Zhiqiang Chen
  • Patent number: 10784008
    Abstract: The present disclosure relates to a shield cover for a radiation source machine and a security inspection apparatus. The shield cover for a radiation source machine comprises: a frame body provided with a receiving chamber for receiving the radiation source machine, an end opening and an ray exit through which rays are emitted out from the radiation source machine; an end cover disposed at the end opening of the frame body and provided with a sealed chamber communicating with the receiving chamber; and a connecting member disposed between the end cover and the frame body and provided with an opening for communicating the sealed chamber of the end cover with the receiving chamber of the frame body, and the end cover being movably connected to the frame body by the connecting member such that a distance of the end cover from the end opening of the frame body is adjustable.
    Type: Grant
    Filed: October 21, 2018
    Date of Patent: September 22, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Long Zhang, Li Zhang, Mingzhi Hong, Jinning Liang
  • Patent number: 10782211
    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.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: September 22, 2020
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Qingjun Zhang, Yuanjing Li, Ziran Zhao, Ge Li, Biao Cao, Qiufeng Ma, Linxia Tan
  • Patent number: 10775302
    Abstract: The present disclosure provides a terahertz detector. The terahertz detector includes a planar array structure that is constituted by a plurality of pixel units, the plurality of pixel units each include N sub pixels and each of the sub pixels includes no more than one signal trigger configured to transform a terahertz signal to an electrical current pulsing signal, and each of the plurality of pixel units detects a signal that is a sum of the electrical current pulsing signals of the N sub pixels, where N is an integer greater than 1.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: September 15, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Ziran Zhao, Haifan Hu, Xuming Ma, Yingxin Wang
  • Patent number: 10775278
    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.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: September 15, 2020
    Assignees: Tsinghua University, NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Ziran Zhao, Ge Li, Qiufeng Ma
  • Patent number: 10775320
    Abstract: The present disclosure discloses an afterglow detection device and an afterglow detection method. The afterglow detection device comprises: an X-ray tube for emitting an X-ray beam; a first reading circuit for receiving a first detected signal from a to-be-detected detector to form and output a first measurement signal according to the first detected signal, the to-be-detected detector being connected to the first reading circuit and disposed on a beam-out side of the X-ray tube to receive radiation of the X-ray beam and outputting the first detected signal to the first reading circuit at the time of detection; a residual ray detector disposed on a beam-out side of the X-ray tube; a second reading circuit connected to the residual ray detector for receiving a second detected signal from the residual ray detector to form and output a second measurement signal according to the second detected signal.
    Type: Grant
    Filed: May 5, 2019
    Date of Patent: September 15, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Shuwei Li, Wenjian Zhang, Xiang Zou, Bozhen Zhao, Qingjun Zhang, Huishao He, Yongqiang Wang, Yanchun Wang