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1. 发明授权

US11054542B2 Multi-ray-source accelerator and inspection method 有权
公开(公告)号：US11054542B2
公开(公告)日：2021-07-06
申请号：US16946953
申请日：2020-07-13
申请人： Tsinghua University , Nuctech Company Limited
发明人： Kejun Kang , Huaibi Chen , Yaohong Liu , Chuanxiang Tang , Yuanjing Li , Hao Zha , Liang Zhang
IPC分类号： G01V5/00
摘要： 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.

2. 发明授权

US10274636B2 X-ray fluoroscopic imaging system 有权
公开(公告)号：US10274636B2
公开(公告)日：2019-04-30
申请号：US14582076
申请日：2014-12-23
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Huaping Tang , Zhiqiang Chen , Chuanxiang Tang , Huaibi Chen , Yuanjing Li , Ziran Zhao , Yaohong Liu , Shangmin Sun , Xinshui Yan , Zhanfeng Qin
IPC分类号： G01V5/00 , G03C9/00 , G01N23/04
摘要： The present invention may perform fluoroscopic imaging simultaneously on the subjects in at least two channels using only one electron accelerator, at least two sets of X-ray beams and at least two sets of detector systems, through the design of the electron accelerator, the shielding and collimating device, the at least two detector arrays and various mechanical composite structures. The X-ray fluoroscopic imaging system according to the present invention may be designed in specific forms of a stationary type, an assembled type, a track mobile type or vehicular mobile type, etc., and has advantages such as simple structure, low cost, strong function, good image quality and the like.

3. 发明授权

US09991085B2 Apparatuses and methods for generating distributed x-rays in a scanning manner 有权
公开(公告)号：US09991085B2
公开(公告)日：2018-06-05
申请号：US15696919
申请日：2017-09-06
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Yuanjing Li , Yaohong Liu , Jinsheng Liu , Huaping Tang , Chuanxiang Tang , Huaibi Chen , Xinshui Yan
IPC分类号： H01J35/14 , H01J35/16 , H01J35/30
CPC分类号： H01J35/14 , H01J35/16 , H01J35/30 , H01J2235/16
摘要： An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.

4. 发明授权

US09780426B2 Phase shifter, accelerator and method of operating the same 有权
公开(公告)号：US09780426B2
公开(公告)日：2017-10-03
申请号：US15281026
申请日：2016-09-29
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun Kang , Jiaru Shi , Ping Wang , Chuanxiang Tang , Huaibi Chen , Yaohong Liu , Xinshui Yan , Wenhui Huang
IPC分类号： H01P1/18 , H05H7/00 , H01P5/02 , H05H5/03 , H05H5/06
CPC分类号： H01P1/182 , H01P1/067 , H01P5/02 , H01P5/082 , H05H5/03 , H05H5/06
摘要： The present disclosure relates to a phase shifter, an accelerator, and an operating method therefor. The phase shifter comprises a rotating part having a first hollow structure, the first hollow structure having a first cavity, a distance between a circumference of the cross section of the first cavity and a rotation center of the rotating part changing periodically and continuously in a peripheral direction, such that when the rotatory part rotates, a phase shift occurs between two adjacent microwave pulses at an outlet of the phase shifter. The operating method comprises transmitting a microwave pulse within the accelerator at a repetitive frequency v Hertz; the driving devices drives the rotating part to rotate at a rotation speed of n RPM, wherein n=15v*m, m is an odd number, 1, 3, 5 . . . , such that when transmitting a microwave pulse each time, the long axis of the oval cross section of the first cavity of the rotatory part is rotated to a horizontal or vertical state.

5. 发明授权

US09771515B2 Process for the preparation of gadolinium oxysulfide scintillation ceramics 有权
公开(公告)号：US09771515B2
公开(公告)日：2017-09-26
申请号：US14827248
申请日：2015-08-14
申请人： Tsinghua University , Nuctech Company Limited
发明人： Yanchun Wang , Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Jianping Chang , Shuqing Zhao , Wenjian Zhang , Yongqiang Wang
IPC分类号： C09K11/77 , C04B35/63 , C04B35/645 , G01T1/29
CPC分类号： C09K11/7771 , C04B35/547 , C04B35/62615 , C04B35/6303 , C04B35/645 , C04B35/6455 , C04B2235/3224 , C04B2235/445 , C04B2235/5436 , C04B2235/5463 , C04B2235/604 , C04B2235/656 , C04B2235/6565 , C04B2235/662 , G01T1/2935
摘要： The present disclosure is directed to a low cost sintering process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics, comprising uniaxial hot pressing primary sintering and hot isostatic pressing secondary sintering.

6. 发明申请

US20170187085A1 Phase shifter, Accelerator and Method of Operating The Same 有权
公开(公告)号：US20170187085A1
公开(公告)日：2017-06-29
申请号：US15281026
申请日：2016-09-29
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun Kang , Jiaru Shi , Ping Wang , Chuanxiang Tang , Huaibi Chen , Yaohong Liu , Xinshui Yan , Wenhui Huang
IPC分类号： H01P1/18 , H05H5/03 , H05H5/06 , H01P5/02
CPC分类号： H01P1/182 , H01P1/067 , H01P5/02 , H01P5/082 , H05H5/03 , H05H5/06
摘要： The present disclosure relates to a phase shifter, an accelerator, and an operating method therefor. The phase shifter comprises a rotating part having a first hollow structure, the first hollow structure having a first cavity, a distance between a circumference of the cross section of the first cavity and a rotation center of the rotating part changing periodically and continuously in a peripheral direction, such that when the rotatory part rotates, a phase shift occurs between two adjacent microwave pulses at an outlet of the phase shifter. The operating method comprises transmitting a microwave pulse within the accelerator at a repetitive frequency v Hertz; the driving devices drives the rotating part to rotate at a rotation speed of n RPM, wherein n=15v*m, m is an odd number, 1, 3, 5 . . . , such that when transmitting a microwave pulse each time, the long axis of the oval cross section of the first cavity of the rotatory part is rotated to a horizontal or vertical state.

7. 发明申请

US20140185776A1 APPARATUSES AND METHODS FOR GENERATING DISTRIBUTED X-RAYS 有权
标题翻译：用于产生分布式X射线的装置和方法
公开(公告)号：US20140185776A1
公开(公告)日：2014-07-03
申请号：US14136362
申请日：2013-12-20
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Yuanjing Li , Yaohong Liu , Jinsheng Liu , Huaping Tang , Chuanxiang Tang , Huaibi Chen , Xinshui Yan
IPC分类号： H01J35/14
CPC分类号： H01J35/14 , H01J35/16 , H01J35/30 , H01J2235/16
摘要： An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.
摘要翻译：一种生成分布式X射线的装置和方法。真空中使用电子枪的热阴极来产生具有一定的初始移动能量和速度的电子束。用初始低能电子束进行周期性扫描，从而使其相互偏转。电流限制装置沿着往复偏转的方向设置在电子束的行进路径中。通过排列在限流装置上的阵列中的通孔，只有部分针对特定位置的电子束可以通过以形成分布在阵列中的顺序电子束电流。这些电子束电流通过高电压电场加速以获得高能量，轰击阳极靶，从而顺序地产生在阳极靶上分布在阵列中的相应聚焦点和x射线。

8. 发明授权

US11476102B2 Real-time calibration device, real-time calibration method and detection apparatus 有权
公开(公告)号：US11476102B2
公开(公告)日：2022-10-18
申请号：US16947998
申请日：2020-08-27
申请人： Nuctech Company Limited , Tsinghua University
发明人： Qingjun Zhang , Zhiqiang Chen , Yuanjing Li , Jianmin Li , Yinong Liu , Yaohong Liu , Guangqin Li , Weiping Zhu , Ge Li , Qiufeng Ma , Biao Cao
IPC分类号： H01J49/00 , G01N27/622 , H01J49/04
摘要： Embodiments of the present disclosure provide a real-time calibration device, a real-time calibration method and a detection apparatus. The real-time calibration device is in fluid communication with a sample injection pipeline of the apparatus to be calibrated. The real-time calibration device is configured to release a trace amount of calibration agent molecules during a sample injection of the apparatus to be calibrated, so that the trace amount of calibration agent molecules and a sample entering the apparatus to be calibrated are mixed and together enter the apparatus to be calibrated, and information of the sample and the calibration agent is detected by the apparatus to be calibrated, thereby performing a calibration.

9. 发明授权

US11320407B2 Gas chromatograph-ion mobility spectrometry combined equipment 有权
公开(公告)号：US11320407B2
公开(公告)日：2022-05-03
申请号：US16714799
申请日：2019-12-16
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Weiping Zhu , Yaohong Liu , Qiufeng Ma , Ge Li , Biao Cao , Lili Yan
IPC分类号： G01N30/44 , G01N30/72
摘要： The present disclosure discloses a gas chromatograph-ion mobility spectrometry combined equipment, including: a gas chromatograph device for pre-separating a to-be-detected sample to form a pre-separated sample; an ion mobility spectrometry device in fluid communication with an outlet of the gas chromatograph device for detecting the pre-separated sample; and a gas circulating device in fluid communication with a discharged gas interface of the ion mobility spectrometry device for processing a discharged gas from the ion mobility spectrometry device, wherein the gas circulating device is further in gas communication with the gas chromatograph device for conveying a part of the discharged gas to the gas chromatograph device to serve as a carrier gas, which drives the to-be-detected sample to enter the gas chromatograph device. The miniaturization and the portability of the gas chromatograph-ion mobility spectrometry combined equipment are improved.

10. 发明授权

US10796436B2 Inspection apparatuses and methods for segmenting an image of a vehicle 有权
公开(公告)号：US10796436B2
公开(公告)日：2020-10-06
申请号：US15913222
申请日：2018-03-06
申请人： Tsinghua University , Nuctech Company Limited
发明人： Chuanhong Huang , Qiang Li , Jianping Gu , Yaohong Liu , Ziran Zhao
IPC分类号： G06T7/143 , G06T7/11
摘要： 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.

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