Patents Assigned to Nuctech Company Limited
  • Patent number: 10634780
    Abstract: An electromagnetic wave imaging system and a method of correcting an antenna array signal are disclosed. In an example, the electromagnetic wave imaging system may include an antenna array, configured to receive electromagnetic wave from a target object and convert the electromagnetic wave into an electrical signal; a signal processing unit, configured to process the electrical signal to obtain an image of the target object; and a distance measuring device, configured to measure a distance of the target object from the antenna array, wherein the signal processing unit corrects the electrical signal based at least in part on the measured distance.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: April 28, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Wanlong Wu, Zongjun Shen, Yinong Liu, Jieqing Yang
  • Patent number: 10629402
    Abstract: A cathode assembly, an X-ray source and a CT device are provided. The cathode assembly includes a ceramic plug having a first and second end portions. Four wiring terminals and a protruding positioning part are provided on the first end portion. An internal cavity is formed in the ceramic plug, and a cathode is provided therein. The cathode has a filament with a positive and negative electrode leads. A grid is provided on the second end portion and has a grid voltage signal line. The cathode has a cathode surface lead. The positive electrode lead, the negative electrode lead, the grid voltage signal line and the cathode surface lead are electrically connected to one of the wiring terminals, respectively. The ceramic socket has four wiring tubes which may be electrically connected with the four wiring terminals.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: April 21, 2020
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Wenhui Huang, Dongsheng Zhang, Qingxiu Jin, Chengjun Tan, Donghai Liu, Qun Luo, Chuanxiang Tang
  • Patent number: 10620336
    Abstract: The present disclosure relates to a method, a device and a system for inspecting a moving object based on cosmic rays, pertaining to the field of radiation imaging and safety inspection techniques. The method includes: detecting whether a speed of the inspected moving object is within a preset range; recording a motion trajectory of the moving object with a monitoring device; acquiring information about charged particles in the cosmic rays with a position sensitive detector, the information about charged particles including track information of the charged particles; determining the moving object by matching positions of the motion trajectory and the track information; reconstructing the track of the charged particles according to the information about the charged particles; and recognizing the material inside the moving object based on the track reconstruction.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: April 14, 2020
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Kejun Kang, Jianping Cheng, Zhiqiang Chen, Ziran Zhao, Junli Li, Xuewu Wang, Zhi Zeng, Qingjun Zhang, Jianping Gu, Xi Yi, Bicheng Liu, Guangming Xu, Yongqiang Wang
  • Patent number: 10623531
    Abstract: A Raman spectroscopic device and a communication method thereof are disclosed. In one aspect, an example Raman spectroscopic device comprises a communication unit configured to communicate with at least one of a server and a management terminal through one or more types of communication interfaces for one or more respective purposes. One or more communication interfaces are established based on a User Datagram Protocol (UDP).
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: April 14, 2020
    Assignee: Nuctech Company Limited
    Inventors: Ziran Zhao, Hongqiu Wang, Nei Yang, Xiaodong Qin
  • Publication number: 20200110056
    Abstract: A sampling tube bundle includes a tube bundle body and a joint assembly. The tube bundle body includes a gas sampling tube for transmitting sampling gas; a metal woven layer wrapping an outer circumference of the gas sampling tube; a heating pad comprising a heat tracing cable wrapping an outer circumference of the metal woven layer, for heating the sampling gas in the gas sampling tube; a flame resistant tape wound around an outer circumference of the of the heating pad; a plurality of signal transmission lines circumferentially spaced apart from one another are arranged outside the flame resistant tape; and a sheath located outside the signal transmission line. The joint assembly is arranged on an end of the tube bundle body, for connecting to an analysis device or a sampling device.
    Type: Application
    Filed: May 8, 2019
    Publication date: April 9, 2020
    Applicants: TSINGHUA UNIVERSITY, Nuctech Company Limited, WUHU JIAHONG NEW MATERIAL CO., LTD.
    Inventors: Zhiqiang CHEN, Chunan XU, Qingjun ZHANG, Fengfeng XIONG, Yuanjing LI, Ziran ZHAO, Yinong LIU, Yaohong LIU, Ge LI, Qiufeng MA, Biao CAO
  • Patent number: 10613247
    Abstract: The present application relates to a method, apparatus and system for inspecting an object based on a cosmic ray, pertaining to the technical field of radiometric imaging and safety inspection. The method includes: recording a movement trajectory of an inspected object by using a monitoring device; acquiring information of charged particles in the cosmic ray by using a position-sensitive detector, the information of charged particles comprising trajectory information of the charged particles; performing position coincidence for the movement trajectory and the trajectory information to determine the object; performing trajectory remodeling for the charged particles according to the information of charged particles; and identifying a material inside the moving object according to the trajectory remodeling.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: April 7, 2020
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Kejun Kang, Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Junli Li, Xuewu Wang, Yaohong Liu, Zhi Zeng, Jianping Gu, Song Liang, Bicheng Liu, Guangming Xu, Yongqiang Wang
  • Patent number: 10585050
    Abstract: A method and device for detecting radioactive sources is disclosed. In one aspect, an example method includes measuring, by a detector, a count rate curve of an inspection object while the inspection object moves through the detector. Pattern recognition is performed on the count rate curve. Whether there are radioactive sources in the inspection object is determined according to a result of the pattern recognition, and if there are radioactive sources in the inspection object, a type of the radioactive sources is determined.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: March 10, 2020
    Assignee: Nuctech Company Limited
    Inventors: Kun Zhao, Qiang Wang, Yangtian Zhang, Hua Peng, Yuanjing Li
  • Patent number: 10586324
    Abstract: The present disclosure discloses an inspection device and a method for inspecting a container. Transmission scanning is performed on the inspected container using a scanning device including a sparse area array detector to obtain scan data. Digital focusing is performed at a specific depth position in a depth direction. Defocused pixel values are filtered out to obtain a slice image at the specific depth position. It is judged whether dangerous articles or suspicious articles are included in the slice image.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: March 10, 2020
    Assignee: Nuctech Company Limited
    Inventors: Ziran Zhao, Jianping Gu, Qian Yi, Bicheng Liu
  • Patent number: 10585052
    Abstract: The present disclosure proposes a security inspection apparatus and method, relates to the technical field of radiation, wherein the security inspection apparatus of the disclosure includes: radiation emitting device, back-scatter detector, size-distance detecting device, orientation adjusting device; the back-scatter detector located between the radiation emitting device and an inspected object; the size-distance detecting device located between the radiation emitting device and the inspected object, for detecting a size of the inspected object and/or a distance between the inspected object and the size-distance detecting device; and the orientation adjusting device adjusts orientation of the radiation emitting device according to the size of the inspected object and/or the distance from the inspected object.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: March 10, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Zhiqiang Chen, Ziran Zhao, Jin Cui, Dong Lin, Bin Hu, Xianshun Tan, Hong Wang
  • Patent number: 10571598
    Abstract: A security inspection apparatus and a security inspection method are disclosed. In one aspect, an example apparatus includes a CT inspection device and a Raman spectrum inspection device, the CT inspection device includes: a CT scanner scanning an object to be inspected to generate a CT image, an image recognizing device recognizing the CT image to check whether or not the object has a suspected hazardous article, and an object marking device making a predetermined marker on the object which has the suspected hazardous article. The Raman spectrum inspection device includes: a Raman spectrum measuring device extracting a Raman spectrum of the suspected hazardous article in the object, a Raman spectrum comparing device comparing the Raman spectrum of the suspected hazardous article with Raman spectra of known compositions to determine a composition of the suspected hazardous article, and an object marker recognizing device recognizing the predetermined marker on the object.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: February 25, 2020
    Assignee: Nuctech Company Limited
    Inventors: Jianhong Zhang, Nei Yang, Hongqiu Wang, Yumin Yi, Hu Tang, Guohua Wei
  • Publication number: 20200055355
    Abstract: The disclosure relates to a traction device and a traction method. The traction device includes: a support chassis; a swing arm, one end of the swing arm is rotatably connected to the support chassis by a rotating shaft such that the swing arm can be switched in a retracted state and a deployed state, wherein the swing arm in the deployed state is adapted to drive the wheel of the vehicle to rotate and tow the vehicle; a driving mechanism, connected to the swing arm, wherein the driving mechanism is capable of driving the swing arm to horizontally rotate around the rotating shaft to switch the swing arm between the retracted state and the deployed state; and a rolling assembly, disposed on a side of the support chassis and being capable of preventing the wheel from contacting with the side of the support chassis when the vehicle is towed.
    Type: Application
    Filed: February 13, 2018
    Publication date: February 20, 2020
    Applicant: Nuctech Company Limited
    Inventors: Shangmin Sun, Hongqi Li, Yuan He, Quanwei Song, Qiangqiang Wang, Weifeng Yu
  • Patent number: 10539531
    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.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: January 21, 2020
    Assignee: Nuctech Company Limited
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Huishao He, Qiufeng Ma, Weiping Zhu, Xiang Zou, Jianping Chang, Song Liang
  • Patent number: 10535509
    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.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: January 14, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Qingjun Zhang, Yuanjing Li, Ziran Zhao, Weiping Zhu, Huishao He, Xianghua Li, Qiufeng Ma
  • Patent number: 10527525
    Abstract: A method and a system for fast inspecting a vehicle based on a length measuring device, including: when a subject vehicle enters an inspection region, measuring a first length and a second length of the subject vehicle; determining whether the first length and the second length is respectively larger than or equal to a preset second length threshold; if so, determining whether a gap portion of the subject vehicle between a first portion and a second portion of the subject vehicle appears in a beam emitting region formed by a beam of radiation rays emitted by the system for fast inspecting a vehicle; and when the gap portion appears in the beam emitting region, emitting a beam of radiation rays of a first radiation dose to the subject vehicle according to the gap portion, wherein the subject vehicle moves with respect to the system for fast inspecting a vehicle.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: January 7, 2020
    Assignee: Nuctech Company Limited
    Inventors: Yanwei Xu, Weifeng Yu
  • Publication number: 20190391080
    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
    Type: Application
    Filed: November 7, 2017
    Publication date: December 26, 2019
    Applicant: NUCTECH COMPANY LIMITED
    Inventors: Ankai WANG, Hongqiu WANG, Yumin YI, Haihui LIU, Jianhong ZHANG
  • Patent number: 10509979
    Abstract: An inspection method and system for inspecting whether there is any liquor in goods is provided. The method includes: acquiring a radiation image of goods being inspected; processing on the radiation image to obtain an ROI; inspecting on the ROI using a liquor goods inspection model to determine if the ROI of the radiation image contains liquor goods. The above solution performs liquor inspection on scanned images of goods, especially containers, so as to intelligently assist the image inspectors.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: December 17, 2019
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Zhiqiang Chen, Li Zhang, Ziran Zhao, Yaohong Liu, Duokun Zhang, Jianping Gu, Qiang Li, Jian Zhang
  • Patent number: 10509985
    Abstract: Disclosed in the present disclosure are a method and an apparatus for security inspection. The method comprises: acquiring identity related information of a person being inspected, the identity related information comprising a certificate photo; acquiring a real-time facial image of the person being inspected; by comparing the real-time facial image and the certificate photo, acquiring a facial comparison similarity; dynamically determining the threshold of the facial comparison similarity; and performing a human-certificate verification on the person being inspected according to the facial comparison similarity and the threshold. The method for security inspection of the present disclosure enables the fast and accurate facial comparison of the person being inspected during security inspection.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: December 17, 2019
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Jin Cui, Huabin Tan, Shenglian Zhou, Zhi Peng
  • Patent number: 10510683
    Abstract: The present disclosure proposes a packaging structure for a metallic bonding based opto-electronic device and a manufacturing method thereof. According to the embodiments, the packaging structure for an opto-electronic device may comprise an opto-electronic chip and a packaging base. The opto-electronic chip comprises: a substrate having a first substrate surface and a second substrate surface opposite to each other; an opto-electronic device formed on the substrate; and electrodes for the opto-electronic device which are formed on the first substrate surface. The packaging base has a first base surface and a second base surface opposite to each other, and comprises conductive channels extending from the first base surface to the second base surface.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: December 17, 2019
    Assignees: Tsinghua University, NUCTECH COMPANY LIMITED
    Inventors: Wenjian Zhang, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Huishao He, Shuwei Li, Nan Bai
  • Patent number: 10495661
    Abstract: The present disclosure relates to a method and a device for monitoring a state of a moving object and a system for fast inspecting a vehicle. The method and a device for monitoring a state of a moving object positions and measures speed of the moving object by using a laser scanner. The device includes: a laser scanner configured to monitor at least one moving object entering a monitoring region, by emitting a plurality of laser beams of different angles to the at least one moving object with a preset scanning frequency; and a processing unit configured to, for each moving object, determine and output a relative position of the moving object with respect to the laser scanner at each time instance. It can significantly improve the accuracy of measuring a low speed of the moving object, and the laser scanner is easy to install and has a low cost.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: December 3, 2019
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Junjie Tu, Yanwei Xu, Weifeng Yu, Yongming Wang
  • Patent number: 10497144
    Abstract: The present disclosure discloses a method and system for identifying a part of a vehicle and a vehicle inspection system. The method includes: acquiring a vehicle body image sequence of a vehicle to be identified; reconstructing the vehicle body by using a first vehicle body reconstruction model generated through a deep learning algorithm and on the basis of the vehicle body image sequence, so as to acquire a vehicle body reconstruction image of the vehicle to be identified; and identifying a boundary identifier of the vehicle to be identified on the basis of the vehicle body reconstruction image of the vehicle to be identified.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: December 3, 2019
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Yanwei Xu, Zheng Hu, Yongming Wang, Chuan Gao, Weifeng Yu, Qiang Li, Yuan Ma, Jianping Gu, Yu Hu, Shangmin Sun