Patents by Inventor Yaohong Liu

Yaohong Liu 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).

  • Publication number: 20190317240
    Abstract: The present disclosure provides a spiral Computed Tomography (CT) device and a three-dimensional image reconstruction method.
    Type: Application
    Filed: August 4, 2017
    Publication date: October 17, 2019
    Inventors: Zhiqiang CHEN, Ziran ZHAO, Yaohong LIU, Jianping GU, Qian YI, Bicheng LIU, Guangming XU
  • Patent number: 10429348
    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: October 1, 2019
    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: 10408804
    Abstract: A darkroom type security inspection apparatus and a method of performing an inspection using the darkroom type security inspection apparatus. An apparatus includes a housing constituting a closed darkroom, and assemblies disposed inside the housing. The assemblies disposed inside the housing include: a sample collecting unit configured to collect a sample, a conveyor unit, and a X-ray detection unit to detect a position of the objected to be inspected, wherein the X-ray detection unit is configured to determine the position of the objected to be inspected within the sampling assembly so that the object to be inspected together with the conveyor unit is conveyed to an expected position; and a sample processing assembly, wherein the assemblies disposed inside the housing are communicated by fittings or connectors.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: September 10, 2019
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Weiping Zhu, Yaohong Liu, Qiufeng Ma, Xiang Zou, Huishao He, Jianping Chang, Song Liang
  • Patent number: 10379252
    Abstract: Disclosed is a method and device for estimating weight of an object to be inspected in an inspection system. An effective atomic number and a high-energy gray value of the dual-energy corresponding to each pixel of the object to be inspected are obtained by a dual-energy radiation scanning. A mass-thickness value for a corresponding pixel is obtained from a pre-created mass-thickness attenuation curve by utilizing the effective atomic numbers and the high-energy gray value of the dual-energy for respective pixels. Weight information for at least a part of the object to be inspected is calculated by multiplying the mass-thickness value by the area of the pixel. Such a method may accurately calculate the weight of the object to be inspected and save the cost for a conventional weighing hardware.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: August 13, 2019
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Zhiqiang Chen, Yuanjing Li, Li Zhang, Ziran Zhao, Yaohong Liu, Juan Zheng, Jianping Gu, Chunguang Zong
  • Publication number: 20190234905
    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: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    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
  • Publication number: 20190234904
    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: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    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
  • Publication number: 20190204188
    Abstract: A sampling adsorber, a heat desorption chamber device, a sampling apparatus and an analyzer apparatus. The sampling adsorber includes an outer barrel, which includes an outer barrel first end and an outer barrel second end, and a core located in the outer barrel, the core having a core first end and a core second end, and the outer barrel first end and the core first end are located at a same side of the sampling adsorber. The core includes an adsorbent portion configured to adsorb a sample and a core body portion, the adsorbent portion connected to the core body portion. Sizes of the outer barrel and the core are formed such that a gap is provided between them to allow external gas to enter the gap through the adsorbent portion and to subsequently be discharged from a downstream portion of the gap.
    Type: Application
    Filed: December 26, 2018
    Publication date: July 4, 2019
    Applicants: Tsinghua University, NUCTECH COMPANY LIMITED
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Nan BAI, Ge LI, Qiufeng MA, Biao CAO, Weiping ZHU
  • Publication number: 20190204271
    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: Application
    Filed: December 28, 2018
    Publication date: July 4, 2019
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Ge LI, Jingli XIE, Qiufeng MA, Biao CAO
  • Publication number: 20190204270
    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: Application
    Filed: December 28, 2018
    Publication date: July 4, 2019
    Inventors: Qingjun ZHANG, Weiping ZHU, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Qiufeng MA, Ge LI, Biao CAO, Nan BAI
  • Patent number: 10340783
    Abstract: The present invention provides a pulse modulating power source, which comprises: a plurality of discharging modules connected in series during discharging; a plurality of triggers corresponding to said plurality of discharging modules, wherein each trigger provides a trigger signal to the corresponding discharging module to turn it on; a control logic module for controlling the trigger signals so as to turn on said plurality of discharging modules successively with a time delay; an output terminal for outputting a voltage.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: July 2, 2019
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Yaohong Liu, Chuanxiang Tang, Xinshui Yan, Wei Jia, Jianjun Gao, Jinsheng Liu, Wei Yin, Xiying Liu, Hao Shi
  • Publication number: 20190198285
    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: Application
    Filed: December 24, 2018
    Publication date: June 27, 2019
    Inventors: Yaohong LIU, Liang ZHANG, Xiaotong ZHANG, Feng GAO
  • Publication number: 20190195751
    Abstract: The present disclosure relates to the technical field of safety detection, and in particular to a sample collecting and introducing device and a detection system. The sample collecting and introducing device provided by the present disclosure includes a sampling device for collecting a sample, and a semipermeable membrane device for extracting the sample collected by the sampling device and conveying the extracted sample to detection equipment, wherein the sampling device is provided with an air guide cavity, the air guide cavity is configured to guide airflow carrying the sample to flow to the semipermeable membrane device, the semipermeable membrane device is provided with a semipermeable membrane which is arranged outside the sampling device. In the present disclosure, the size of the semipermeable membrane is no longer limited by the sampling device, and therefore the difficulty of increasing the area of the semipermeable membrane is reduced.
    Type: Application
    Filed: December 26, 2018
    Publication date: June 27, 2019
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Ge LI, Biao CAO, Jingli XIE, Xiaolin ZHAO, Qiufeng MA
  • Publication number: 20190193017
    Abstract: The present disclosure relates to a gas purification apparatus and a trace substance detection device. The gas purification apparatus includes a first purification component, a second purification component and a switching component, wherein the switching component can be switched between a first state and a second state, the first purification component and a component to be purified form a gas purification loop in the first state, and the second purification component can provide a regeneration gas for the first purification component in the second state, so that water vapor and impurities in the first purification component are discharged to outside.
    Type: Application
    Filed: December 26, 2018
    Publication date: June 27, 2019
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Lili YAN, Ge LI, Qiufeng MA, Nan BAI
  • Publication number: 20190198282
    Abstract: The present disclosure provides a drawer-type carrying device for an accelerator and an cabin structure for the accelerator, the drawer-type carrying device for the accelerator includes a frame mechanism and a drawing mechanism. The frame mechanism is used for installing the accelerator; the drawing mechanism is connected with the frame mechanism and the frame mechanism is movable relative to the drawing mechanism. The cabin structure for the accelerator includes a cabin, a shielding mechanism and a drawer-type carrying device for the accelerator. The cabin has a working area and a maintenance area. The shielding mechanism is disposed in the working area and has a side opening door facing towards the maintenance area. The frame mechanism is capable of drawn from the shielding mechanism into the maintenance area when the side opening door is opened.
    Type: Application
    Filed: December 24, 2018
    Publication date: June 27, 2019
    Inventors: Yaohong LIU, Liang ZHANG, Xiaotong ZHANG
  • Patent number: 10332244
    Abstract: A method and an apparatus for estimating an image fuzziness are provided. The method may comprise: acquiring an image; obtaining a multi-scale representation of the image by performing a multi-scale transform on the image; calculating gradients of the image and a normalized histogram of the gradients at each scale based on the multi-scale representation; calculating error vectors between the normalized histogram of gradients at each scale and a normalized original histogram of gradients of the image; performing a weighted summing on the error vectors by using respective weights to obtain a summed result, wherein the weights are determined based on a reciprocal of the sums of squares of the gradients of the image at each scale; estimating the ambiguity of the image based on the summed result.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: June 25, 2019
    Assignee: Nuctech Company Limited
    Inventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Yaohong Liu, Jianping Gu, Zhiming Wang
  • Patent number: 10331327
    Abstract: Disclosed is a message display method. In the display method, a first message is received, a second message on a current display interface is detected and one or more messages between the first message and the second message are hidden. A message display apparatus and a terminal are also disclosed.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: June 25, 2019
    Assignee: China Mobile Communications Corporation
    Inventors: Shu Zou, Huanglingzi Liu, Yaohong Zhao
  • Publication number: 20190170894
    Abstract: This invention provides a scan method, scan system and radiation scan controller, and relates to the field of radiation. The scanning method includes obtaining detection data of an object to be inspected under radiation scanning using a detector, adjusting an accelerator output beam dose rate and/or an output electron beam energy level of a radiation emission device according to the detection data. With this method, working conditions of the accelerator of the radiation emission device may be adjusted according to the detection data detected by the detector, so that for a region having a larger mass thickness, a higher output beam dose rate or a higher electron beam output energy level is adopted to guarantee satisfied imaging technical indexes, for a region having a smaller mass thickness, a lower output beam dose rate or a lower electron beam output energy level is adopted to reduce the environmental dose level while guaranteeing satisfied imaging technical indexes.
    Type: Application
    Filed: January 22, 2019
    Publication date: June 6, 2019
    Inventors: Kejun KANG, Yaohong LIU, Ziran ZHAO, Wei JIA, Jianping GU, Chuanxiang TANG, Huaibi CHEN, Jianjun GAO, Wei YIN, Xiying LIU
  • Publication number: 20190156139
    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: Application
    Filed: January 23, 2019
    Publication date: May 23, 2019
    Inventors: Zhiqiang CHEN, Li ZHANG, Ziran ZHAO, Yaohong LIU, Duokun ZHANG, Jianping GU, Qiang LI, Jian ZHANG
  • Patent number: 10289699
    Abstract: A vehicle inspection method and system are disclosed. In one aspect, the method includes acquiring a transmission image of an inspected vehicle. The method further includes acquiring a transmission image template of a vehicle model corresponding to the model of the inspected vehicle from a database. The method further includes performing registration on the transmission image of the inspected vehicle and the transmission image template. The method further includes determining a difference between a transmission image after the registration and a transmission image template after the registration, to obtain a difference area of the transmission image of the vehicle relative to the transmission image template. The method further includes processing the difference area to determine whether the vehicle carries a suspicious object or not.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: May 14, 2019
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Zhiqiang Chen, Li Zhang, Ziran Zhao, Yaohong Liu, Jianping Gu, Zheng Hu, Qiang Li
  • Patent number: 10281432
    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: September 29, 2016
    Date of Patent: May 7, 2019
    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