Patents by Inventor Jinyu Zhang
Jinyu Zhang 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).
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Patent number: 8477902Abstract: The present invention relates to a radiation inspection apparatus for object security inspection, comprising: a ray generator configured to emit a ray, a collimator configured to collimate the ray emitted from the ray generator, and a detector configured to receive the collimated ray collimated by the collimator, wherein the collimated ray forms an irradiated area on the detector included by an effective detect area of the detector. The present invention also relates to a method of performing a security inspection to a body using a radiation inspection apparatus. With the above technical solutions, the present invention can achieve a low single inspection absorptive dose and a micro dose inspection while meeting inspection requirements to improve public radiation security.Type: GrantFiled: June 25, 2010Date of Patent: July 2, 2013Assignees: Tsinghua University, Nuctech Company LimitedInventors: Jianmin Li, Yinong Liu, Xuewu Wang, Ziran Zhao, Lan Zhang, Yumin Yi, Ming Chen, Jinyu Zhang, Yongming Wang
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Patent number: 8320523Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: GrantFiled: July 7, 2011Date of Patent: November 27, 2012Assignees: Tshinghua University, Nuctech Company LimitedInventors: Li Zhang, Zhiqiang Chen, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Publication number: 20120224671Abstract: The present invention relates to a radiation inspection apparatus for object security inspection, comprising: a ray generator configured to emit a ray, a collimator configured to collimate the ray emitted from the ray generator, and a detector configured to receive the collimated ray collimated by the collimator, wherein the collimated ray forms an irradiated area on the detector included by an effective detect area of the detector. The present invention also relates to a method of performing a security inspection to a body using a radiation inspection apparatus. With the above technical solutions, the present invention can achieve a low single inspection absorptive dose and a micro dose inspection while meeting inspection requirements to improve public radiation security.Type: ApplicationFiled: June 25, 2010Publication date: September 6, 2012Inventors: Jianmin Li, Yinong Liu, Xuewu Wang, Ziran Zhao, Lan Zhang, Yumin Yi, Ming Chen, Jinyu Zhang, Yongming Wang
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Patent number: 8129691Abstract: A security inspection door comprising a narcotic drug/explosive detecting subsystem, a radioactive substance detecting subsystem and a metal detecting subsystem which are provided in a tank body is disclosed, wherein electromagnetic radiation shields are respectively provided around the three detecting subsystems, so that they are isolated from one another and are not interfered with one another. The three detecting subsystems are combined together to form a novel security inspection door, so the narcotic drugs/the explosives, the radioactive substances and the dangerous metal articles can be detected at the same time. Further, electromagnetic radiation shields are respectively provided around the three detecting subsystems, so that the three detecting subsystems are isolated from one another and are not interfered with one another, and thus, the inspection reliability and the inspection accuracy are improved.Type: GrantFiled: May 19, 2009Date of Patent: March 6, 2012Assignee: Nuctech Company LimitedInventors: Haifeng Hu, Zhiqiang Chen, Yuanjing Li, Jin Lin, Jinyu Zhang, Hua Peng, Qingjun Zhang, Zhongxia Zhang, Yangtian Zhang, Xiaoti Yin, Liwei Song
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Publication number: 20110261922Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: ApplicationFiled: July 7, 2011Publication date: October 27, 2011Inventors: Li Zhang, Zhiqiang CHEN, Xuewu WANG, Haifeng HU, Hongxin WU, Yuanjing LI, Yinong LIU, Ziran ZHAO, Yuxiang XING, Hu TANG, Yumin YI, Jinyu ZHANG
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Patent number: 8036337Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: GrantFiled: September 26, 2008Date of Patent: October 11, 2011Assignees: Tsinghua University, Nuctech Company LimitedInventors: Li Zhang, Zhiqiang Chen, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Publication number: 20110211671Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: ApplicationFiled: April 19, 2011Publication date: September 1, 2011Inventors: Zhiqiang Chen, Li Zhang, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 7991112Abstract: The present invention discloses a detecting method of an article detection apparatus composed of an individual DR subsystem and an individual CT subsystem, the method comprising: obtaining a first projection data on ray attenuation coefficient by using the DR subsystem to project an A-layer of an article at a first projection angle, and obtaining a second projection data on ray attenuation coefficient by using the CT subsystem to project an A-layer of the article at a second projection angle different from the first projection angle; and judging whether an A-layer of the detected article contains a dangerous article based on the first projection data and the second projection data so as to obtain a first judgment on an A-layer of the detected article.Type: GrantFiled: December 23, 2008Date of Patent: August 2, 2011Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Yuanjing Li, Yulan Li, Li Zhang, Wanlong Wu, Hua Peng, Yinong Liu, Zirao Zhao, Xuewu Wang, Shangmin Sun, Bin Sang, Hailin Wang, Quanwei Song, Jinyu Zhang
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Patent number: 7989770Abstract: A radiation inspection system is disclosed. The radiation inspection system comprises: an inspection passage through which a moving object under inspection can pass, a radiation source disposed on a side of the inspection passage for emitting radiation, an array of detectors disposed on the other side of the inspection passage opposite to the radiation source for receiving the radiation emitted from the radiation source, a detector for detecting the moving object, and a controller for receiving a signal from the detector and controlling the radiation source to emit radiation when the detector detects the moving object for radiation imaging and inspection of the moving object. According to the radiation inspection system, the controller can control the radiation source to automatically emit radiation beam based on the detection signal from the detector for inspecting the moving object. As a result, inspection efficiency is improved, safety is increased, and misoperation of the radiation source is eliminated.Type: GrantFiled: December 22, 2006Date of Patent: August 2, 2011Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Yuanjing Li, Yinong Liu, Junli Li, Hua Peng, Yaohong Liu, Shangmin Sun, Jinyu Zhang, Qingjun Zhang, Li Zhang, Yali Xie, Yanli Deng, Ming Ruan, Siyuan Liang, Guang Yang, Wei Jia
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Publication number: 20110122989Abstract: Disclosed is detection system for detection an object being conveyed along a convey path, the detection system comprises a DR imaging apparatus and a CT imaging apparatus which is provided at the downstream or upstream of the DR imaging apparatus along the convey path, wherein an average speed at which the object passes the DR imaging apparatus is higher than an average speed at which the object passes the CT imaging apparatus.Type: ApplicationFiled: December 30, 2009Publication date: May 26, 2011Inventors: Hua Peng, Jinyu Zhang, Quanwei Song
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Patent number: 7945017Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: GrantFiled: September 29, 2008Date of Patent: May 17, 2011Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhiqiang Chen, Li Zhang, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 7911592Abstract: Disclosed is a method for identifying a moving object, comprising: a driving-in step of moving a moving object into a passage, a velocity measuring step of measuring a moving velocity of the moving object, a light beam emitting step of emitting light beams from one side of the passage, a light beam receiving step of receiving the light beams not shielded by the moving object at other side of the passage, a profile determining step of determining a profile of at least one portion of the moving object based on the received light beams and the measured moving velocity of the moving object, and an identifying step of determining type of the moving object by comprising the profile of the at least one portion of the moving object with information of moving objects stored previously.Type: GrantFiled: December 25, 2006Date of Patent: March 22, 2011Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Yuanjing Li, Yinong Liu, Junli Li, Hua Peng, Yaohong Liu, Shangmin Sun, Jinyu Zhang, Qingjun Zhang, Li Zhang, Yali Xie, Yanli Deng, Ming Ruan, Siyuan Liang, Guang Yang, Wei Jia
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Patent number: 7848485Abstract: For a radiation imaging inspection system, apparatus, and/or method, the system, particularly a trailer security inspection system, includes a protective wall forming an inspection passage for passage of a trailer, a radiation imaging system effecting security inspection of the trailer passing through the inspection passage, and a fraction arrangement for hauling the trailer.Type: GrantFiled: November 20, 2008Date of Patent: December 7, 2010Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Haifeng Hu, Zhiqiang Chen, Yuanjing Li, Chuanxiang Tang, Hua Peng, Zhizhong Liang, Zhongrong Yang, Shangmin Sun, Yaohong Liu, Jinyu Zhang, Qingjun Zhang, Haitao Jiang, Yanli Deng, Xiang'an Qi, Meng Wang, Haihong Sun
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Publication number: 20100284514Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: ApplicationFiled: September 26, 2008Publication date: November 11, 2010Inventors: Li Zhang, Zhiqiang Chen, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 7703979Abstract: Disclosed is a radiation device for the human body inspection. The device includes a X-ray generator for radiating radiation; a detector for receiving the radiation radiated from the X-ray generator; a first flexible member connected with the X-ray generator for hoisting the X-ray generator; a second flexible member connected with the detector for hosing the detector; and a driving device for synchronically driving the X-ray generator and the detector through the first and second flexible members, and at the same time, the X-ray generator and the detector are spaced from each other a predetermined distance in a horizontal direction. The radiation device for the human body inspection according to the present invention can ensure that the radiation source and the detector can be operated synchronically during the whole inspection process; thereby the quality of radiation imaging is increased.Type: GrantFiled: January 6, 2009Date of Patent: April 27, 2010Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Yinong Liu, Ziran Zhao, Lian Wang, Lan Zhang, Yumin Yi, Jinyu Zhang
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Patent number: 7688945Abstract: The present invention discloses a system for imaging inspection of a movable object is provided, comprising: a first detecting unit configured to inspect whether a moving object to be inspected moves into a passage or not; a second detecting unit for inspecting whether a part to be shielded of the moving object passes into the passage or not and generating a passing signal after the first detecting unit inspects that the moving object to be inspected moves into the passage; a scan imaging device for emitting radiating beams for scan inspecting the moving object to be inspected; and a control system for generating a control signal for controlling the emitted radiating beams from the scan imaging device according to the passing signal from the second detecting unit. With the above system thereof, the imaging inspection of the moving object with rapid speed can be undertaken safely and reliably.Type: GrantFiled: December 25, 2006Date of Patent: March 30, 2010Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Yuanjing Li, Yinong Liu, Junli Li, Hua Peng, Yaohong Liu, Shangmin Sun, Jinyu Zhang, Qingjun Zhang, Li Zhang, Yali Xie, Yanli Deng, Ming Ruan, Siyuan Liang, Guang Yang, Wei Jia
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Publication number: 20090320620Abstract: The present invention discloses a door-type passenger security inspection apparatus comprising: an air source supplying an air flow; a spraying device for spraying the air flow onto the body and clothes of a passenger being inspected; an air-spray moving device for moving the spraying device; a collecting device for collecting suspicious particles of contraband articles separated from the body and the clothes of the passenger; and a detecting device for detecting the suspicious particles of contraband articles collected by the collecting device. Further, the present invention also provides a method for passenger security inspection on prohibited-articles. With the technical solution of the present inventions contraband articles such as narcotic drugs and explosives may be detected reliably and effectively.Type: ApplicationFiled: June 12, 2009Publication date: December 31, 2009Applicant: NUCTECH COMPANY LIMITEDInventors: Haifeng Hu, Zhiqiang Chen, Yuanjing Li, Jin Lin, Jinyu Zhang, Hua Peng, Qingjun Zhang, Zhongxia Zhang, Yangtian Zhang, Xiaoti Yin, Liwei Song
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Publication number: 20090321638Abstract: The present invention discloses a security inspection door comprising a narcotic drug/explosive detecting subsystem, a radioactive substance detecting subsystem and a metal detecting subsystem which are provided in a tank body, wherein electromagnetic radiation shields are respectively provided around the three detecting subsystems, so that the narcotic drug/explosive detecting subsystem, the radioactive substance detecting subsystem and the metal detecting subsystem are isolated from one another and are not interfered with one another. In the present invention, the narcotic drug/explosive detecting subsystem, the radioactive substance detecting subsystem and the metal detecting subsystem are combined together for the first time to form a novel security inspection door, so the narcotic drugs/the explosives, the radioactive substances and the dangerous metal articles can be detected at the same time.Type: ApplicationFiled: May 19, 2009Publication date: December 31, 2009Inventors: Haifeng Hu, Zhiqiang Chen, Yuanjing Li, Jin Lin, Jinyu Zhang, Hua Peng, Qingjun Zhang, Zhongxia Zhang, Yangtian Zhang, Xiaoti Yin, Liwei Song
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Publication number: 20090316136Abstract: Disclosed is a method for identifying a moving object, comprising: a driving-in step of moving a moving object into a passage, a velocity measuring step of measuring a moving velocity of the moving object, a light beam emitting step of emitting light beams from one side of the passage, a light beam receiving step of receiving the light beams not shielded by the moving object at other side of the passage, a profile determining step of determining a profile of at least one portion of the moving object based on the received light beams and the measured moving velocity of the moving object, and an identifying step of determining type of the moving object by comprising the profile of the at least one portion of the moving object with information of moving objects stored previously.Type: ApplicationFiled: December 25, 2006Publication date: December 24, 2009Inventors: Zhiqiang Chen, Yuanjing Li, Yinong Liu, Junli Li, Hua Peng, Yaohong Liu, Shangmin Sun, Jinyu Zhang, Qingjun Zhang, Li Zhang, Yali Xie, Yanli Deng, Ming Ruan, Siyuan Liang, Guang Yang, Wei Jia
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Publication number: 20090225939Abstract: The present invention discloses a system for imaging inspection of a movable object is provided, comprising: a first detecting unit configured to inspect whether a moving object to be inspected moves into a passage or not; a second detecting unit for inspecting whether a part to be shielded of the moving object passes into the passage or not and generating a passing signal after the first detecting unit inspects that the moving object to be inspected moves into the passage; a scan imaging device for emitting radiating beams for scan inspecting the moving object to be inspected; and a control system for generating a control signal for controlling the emitted radiating beams from the scan imaging device according to the passing signal from the second detecting unit. With the above system thereof, the imaging inspection of the moving object with rapid speed can be undertaken safely and reliably.Type: ApplicationFiled: December 25, 2006Publication date: September 10, 2009Inventors: Zhiqiang Chen, Yuanjing Li, Yinong Liu, Junli Li, Hua Peng, Yaohong Liu, Shangmin Sun, Jinyu Zhang, Qingjun Zhang, Li Zhang, Yali Xie, Yanli Deng, Ming Ruan, Siyuan Liang, Guang Yang, Wei Jia