Patents by Inventor Ziran Zhao

Ziran Zhao 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: 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
  • Publication number: 20200309987
    Abstract: The present disclosure discloses a method of substance identification of an item to be inspected using a multi-energy-spectrum X-ray imaging system, the method comprising: acquiring a transparency related vector consisting of transparency values of the item to be inspected in N energy regions, wherein N is greater than 2; calculating distances between the transparency related vector and transparency related vectors stored in the system consisting of N transparency mean values of multiple kinds of items with multiple thicknesses in the N energy regions; and identifying the item to be inspected as the item corresponding to the minimum distance. The present disclosure is based on a multi-energy-spectrum X-ray imaging system, and proposes a method of substance identification by analyzing the multi-energy-spectrum substance identification issue.
    Type: Application
    Filed: September 12, 2017
    Publication date: October 1, 2020
    Inventors: Guangming XU, Bicheng LIU, Ziran ZHAO, Jianping GU, Qiang LI, Lan ZHANG
  • 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: 10768575
    Abstract: An imaging device and an imaging method by millimeter wave 3D holographic scanning are disclosed. In an embodiment, the millimeter wave 3D holographic scanning imaging device may include: a conveying apparatus configured to convey an object located thereon in a first direction; and at least one millimeter wave transceiving module arranged beside the conveying apparatus, each configured to be enabled to scan the object when the conveying apparatus conveys the object through the respective millimeter wave transceiving module, wherein each millimeter wave transceiving module is arranged to have its longitudinal direction extend in a direction intersecting the first direction, and includes a millimeter wave transceiving antenna array for transceiving millimeter wave signals.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: September 8, 2020
    Assignee: Nuctech Company Limited
    Inventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Wanlong Wu, Zongjun Shen, Li Zhang, Yinong Liu, Yingkang Jin, Wentao Yu
  • Publication number: 20200249373
    Abstract: The disclosure discloses a millimeter wave security inspection apparatus and a method for inspecting human or article. The apparatus includes: a door device including a first door and a second door arranged in a stacked mode and each made of a material allowing a millimeter wave to penetrate therethrough; a millimeter wave transceiver arranged between the first door and the second door and including an millimeter wave transceiving antenna array configured to transmit and receive a millimeter wave signal to and from an entrance side and an exit side of the door device; and a linear driver to which the millimeter wave transceiver is connected to be movable relative to the door device, so as to scan a first side of an object positioned at the entrance side and a second side of the object opposite to the first side positioned at the exit side.
    Type: Application
    Filed: December 23, 2019
    Publication date: August 6, 2020
    Inventors: Ziran ZHAO, Yingkang JIN, Lingbo QIAO, Zhimin ZHENG, Ming XU, Xilei LUO
  • Publication number: 20200209384
    Abstract: A millimeter wave security check gate is provided, comprising: a gate body; and a top millimeter wave imaging system, comprising: a millimeter wave transceiving antenna array disposed at a top of the gate body, wherein the millimeter wave transceiving antenna array comprises at least one transmitting antenna unit and a plurality of receiving antenna units; and a millimeter wave signal source connected with the millimeter wave transceiving antenna array.
    Type: Application
    Filed: November 14, 2019
    Publication date: July 2, 2020
    Applicant: Nuctech Company Limited
    Inventors: Ziran Zhao, Zhimin Zheng, Lingbo Qiao, Yingkang Jin, Wenguo Liu
  • Publication number: 20200210785
    Abstract: Empty container identification method and system are disclosed. The method includes: obtaining customs declaration information, and finding out an vehicle declared as an empty container or an empty vehicle from the customs declaration information; performing X-ray inspection on the vehicle to acquire a transmission image of the vehicle; inputting the transmission image into an empty container identification model obtained by pre-training, so that the empty container identification model determines candidate regions of the transmission image, and performs post-processing analysis on the candidate regions to obtain an image identification result; and comparing the image identification result with the corresponding customs declaration information to determine whether or not the image identification result is consistent with the customs declaration information.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Inventors: Yanjie YAO, Yongchun LIU, Yan ZHANG, Ziran ZHAO, Li ZHANG, Yuxiang XING
  • Patent number: 10701787
    Abstract: The disclosed technology relates to an X-ray conversion target. In one aspect, the X-ray conversion target includes target body and a target part arranged within the target body, the target part having a first face configured to produce X-rays. The X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: June 30, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Yaohong Liu, Ziran Zhao, Jinsheng Liu, Huaibi Chen, Liang Zhang, Dongsheng Zhang
  • Patent number: 10699887
    Abstract: Embodiments of the present disclosure relate to a preparation and feed apparatus of a standard sample for calibration of a trace-analysis instrument, and especially to a preparation and feed apparatus of a standard sample for calibration of a gas chromatograph-ion mobility spectrometer. When the trace-analysis instrument is being calibrated by taking advantage of the preparation and feed apparatus according to embodiments of the disclosure, it is unnecessary to use an additional dedicated tool and steps to prepare the sample for testing and to use an organic solvent or a dedicated sample application/dispensing tool, resulting in that the trace-analysis instrument is simple and convenient to carry and use, and the substance for calibration is also convenient to store and exchange; moreover, the trace-analysis instrument is also safe, reliable and environmentally friendly.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: June 30, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Ziran Zhao, Weiping Zhu, Nan Bai, Qiufeng Ma
  • Patent number: 10663413
    Abstract: A method for inspecting a container and an inspection device are disclosed. X-ray scanning is performed on the inspected container to obtain a scanned image. The scanned image is processed to obtain a region of interest. Features of texture units included in the region of interest are calculated. Local descriptions of the texture units are formed based on the features of the texture units. Distinction of each local point is calculated from a local description of each of the texture units so as to obtain a local distinct map of the region of interest. It is determined whether there is an article which is secretly carried in the inspected container using the local distinct map.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: May 26, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Qiang Li, Jianping Gu, Bin Xu, Yaohong Liu, Ziran Zhao
  • Patent number: 10663429
    Abstract: The present disclosure provides a device for collecting semi-volatile or non-volatile substance, including an air nozzle, a front cavity and a collecting body. The air nozzle is configured to eject air to a sample attachment surface. The front cavity has an upper port. The collecting body is sealingly connected to a lower end of the front cavity, inside of which is provided with a cylindrical cavity and a conical cavity arranged vertically coaxially, and bottom of which is provided with a sample outlet. The collecting body is provided with an air intake passage which is non-coplanar with respect to an axis of the cylindrical cavity and is disposed obliquely downward and inward. The collecting body is further provided with an air exhaust passage one end of which is a discharge port connected to the interior of the cylindrical cavity, the other end is connected to an air pump.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: May 26, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Ge Li, Jingli Xie, Qiufeng Ma, Biao Cao
  • Patent number: 10654196
    Abstract: A mold and a method of manufacturing GOS ceramic scintillator by using the mold are provided. The mold comprises: a female outer sleeve having a cavity disposed inside; a plurality of female blocks disposed inside the cavity, the plurality of female blocks being put together to form a composite structure having a vertical through hole; and a male upper pressing head and a male lower pressing head, wherein each of the male upper pressing head and the male lower pressing head has a shape consistent with that of the vertical through hole. The disclosure may reduce defects of the related art in hot-pressing-sintering such as a mold has a short retirement period and a high material waste, significantly reduce the cost for production of the GOS ceramic scintillator, and significantly improve a process economy.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: May 19, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Yanchun Wang, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Nan Bai
  • Publication number: 20200150086
    Abstract: A gas path flow monitoring apparatus for an ion mobility spectrometer includes: an ion migration tube, a sensor group, and monitoring device. The ion migration tube has a drift gas inlet, a carrier gas inlet for a sample gas, and an exhaust outlet. The sensor group comprises a drift gas intake quantity sensor connected to the drift gas inlet, a carrier gas intake quantity sensor connected to the carrier gas inlet, and an exhaust quantity sensor connected to the exhaust outlet. The monitoring device is connected to the sensor group to monitor a drift gas intake quantity sensed by the drift gas intake quantity sensor, a carrier gas intake quantity sensed by the carrier gas intake quantity sensor, and an exhaust quantity sensed by the exhaust quantity sensor.
    Type: Application
    Filed: January 25, 2019
    Publication date: May 14, 2020
    Applicants: TSINGHUA UNIVERSITY, Nuctech Company Limited
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Honghui XIN, Biao CAO, Nan BAI, Wei WANG, Qiufeng MA
  • Patent number: 10649104
    Abstract: A method and apparatus for reconstructing an incident energy spectrum for a detector are disclosed. In this method, an object to be inspected is illuminated with rays, and then rays transmitted through the object to be inspected are received by the detector to convert the received rays into data of a detected energy spectrum. The incident energy spectrum for the detector is reconstructed based on the data of the energy spectrum using a statistical iterative algorithm with a pre-established detector response function. With the above solution of the embodiments, the incident energy spectrum for the detector can be more accurately acquired, thereby reducing a distortion of the incident energy spectrum caused by the detector.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: May 12, 2020
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Liang Li, Zhiqiang Chen, Li Zhang, Ziran Zhao, Yuxiang Xing, Kejun Kang, Lan Zhang, Ruizhe Li
  • Patent number: 10646179
    Abstract: The present disclosure provides a method for recognizing an article using a multi-energy spectrum X-ray imaging system and a multi-energy spectrum X-ray imaging system. The method comprises: recognizing an application scenario and/or priori information of the article; selecting a parameter mode suitable for the article from a plurality of parameter modes stored in the multi-energy spectrum X-ray imaging system based on the recognized application scenario and/or priori information; and recognizing the article using the selected parameter mode, wherein the plurality of parameter modes are obtained by optimizing system parameters of the multi-energy spectrum X-ray imaging system under a specific condition using a training sample library for various articles.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 12, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Guangming Xu, Bicheng Liu, Ziran Zhao, Lan Zhang, Jianping Gu
  • Patent number: 10634627
    Abstract: An autonomously mobile backscatter detection apparatus and method is disclosed. In one aspect, the apparatus includes a mobile platform configured to move freely in a horizontal plane. The apparatus further includes a backscatter detection imaging apparatus, arranged on the mobile platform, configured to acquire an image of an item to be inspected.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: April 28, 2020
    Assignee: Nuctech Company Limited
    Inventors: Ziran Zhao, Zhiqiang Chen, Dong Lin, An Cang, Jin Cui, Bin Hu, Chaoyan Zhang
  • Patent number: D907103
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: January 5, 2021
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Ziran Zhao, Ningning Li, Lei Zhang