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1. 发明授权

US10895660B2 Vehicle-mounted type back scattering inspection system 有权
公开(公告)号：US10895660B2
公开(公告)日：2021-01-19
申请号：US16234630
申请日：2018-12-28
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Hao Yu , Ying Li , Weizhen Wang , Quanwei Song , Dongyu Wang , Haojie Chi , Jianmin Li , Yulan Li , Chunguang Zong , Zhiqiang Chen , Yuanjing Li , Li Zhang
IPC分类号： G01N23/203 , G01V5/00
摘要： The present disclosure discloses a vehicle-mounted type back scattering inspection system. The back scattering imaging device has a vehicle-mounted working state and a ground working state, and in the vehicle-mounted working state, the back scattering imaging device performs inspection work in a carriage; in the ground working state, the back scattering imaging device performs the inspection work on the ground at the outside of the carriage; and the back scattering imaging device is separately arranged relative to the carriage and is movable between the carriage and the ground to switch between the vehicle-mounted working state and the ground working state.

2. 发明授权

US10996369B2 Vehicle-mounted type back scattering inspection system 有权
公开(公告)号：US10996369B2
公开(公告)日：2021-05-04
申请号：US16234632
申请日：2018-12-28
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Hao Yu , Ying Li , Weizhen Wang , Quanwei Song , Dongyu Wang , Haojie Chi , Jianmin Li , Yulan Li , Chunguang Zong , Zhiqiang Chen , Yuanjing Li , Li Zhang
IPC分类号： G01N23/203 , G01V5/00
摘要： The present disclosure discloses a vehicle-mounted type back scattering inspection system. The vehicle-mounted type back scattering inspection system includes a carriage and a back scattering imaging device, the scanning range of the back scattering imaging device is variable. As the scanning range of the back scattering imaging device of the present disclosure is variably set, the inspection range of the back scattering imaging device can be expanded.

3. 发明授权

US10782246B2 Movable ray inspection system and ray inspection method for a container 有权
公开(公告)号：US10782246B2
公开(公告)日：2020-09-22
申请号：US15827739
申请日：2017-11-30
申请人： Nuctech Company Limited , Tsinghua University
发明人： Chunguang Zong , Ying Li , Hejun Zhou , Quanwei Song , Jianmin Li , Yulan Li , Yuanjing Li , Li Zhang , Zhiqiang Chen
IPC分类号： G01N23/04 , G01N21/90 , G01V5/00 , G01N21/01
摘要： A movable ray inspection system used to be mounted in a container yard to inspect an object within a container is provided. The movable ray inspection system includes: a ray generator device configured to emit a ray, a ray receiving device configured to receive the ray, and at least one chamber for receiving the ray generator device and the ray receiving device therein. Each of the at least one chamber is configured to be a standard container or a chamber which has a same shape, a same size and a same structure as a standard container such that the movable ray inspection system is adapted to be stacked in the container yard.

4. 发明申请

US20200025968A1 RADIATION INSPECTION SYSTEM AND RADIATION INSPECTION METHOD 审中-公开
公开(公告)号：US20200025968A1
公开(公告)日：2020-01-23
申请号：US16232058
申请日：2018-12-26
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Yigang YANG , Dongyu Wang , Hao Yu , Quanwei Song , Jianmin Li , Weizhen Wang , Yulan Li , Chunguang Zong , Qinjian Zhang , Ming Zeng , Zhiqiang Chen , Yuanjing Li , Li Zhang
IPC分类号： G01V5/00 , G01N23/20
摘要： The present disclosure discloses a radiation inspection system and a radiation inspection method. The radiation inspection system comprises a radiation source and a beam modulating device. The beam modulating device comprises a first collimating structure disposed at a beam exit side of the radiation source and a second collimating structure disposed at a beam exit side of the first collimating structure. The second collimating structure is movable relative to the first collimating structure to change a relative position of the first collimating port of the first collimating structure with the second collimating port of the second collimating structure, and the beam modulating device is shifted between a first operational state in which the beam modulating device modulates an initial beam into a fan beam, and a second operational state in which the beam modulating device modulates the initial beam into a pencil beam variable in position.

5. 发明授权

US10379252B2 Methods and devices for estimating weight of an object to be inspected in an inspection system 有权
公开(公告)号：US10379252B2
公开(公告)日：2019-08-13
申请号：US15217787
申请日：2016-07-22
申请人： Tsinghua University , NUCTECH COMPANY LIMITED
发明人： Zhiqiang Chen , Yuanjing Li , Li Zhang , Ziran Zhao , Yaohong Liu , Juan Zheng , Jianping Gu , Chunguang Zong
IPC分类号： G01V5/00 , G01N23/04 , G01N23/046 , G01N23/06 , G01N23/083 , G01N23/087 , G01N23/10 , G01V5/12
摘要： 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.

6. 发明授权

US10935691B2 CT inspection system and CT imaging method for obtaining detection data at a frequency that is N times a beam-emitting frequency of a radioactive source device 有权
公开(公告)号：US10935691B2
公开(公告)日：2021-03-02
申请号：US16234625
申请日：2018-12-28
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun Kang , Jianmin Li , Xiulin Ni , Yulan Li , Yuanjing Li , Zhiqiang Chen , Li Zhang , Liang Li , Xiang Zou , Weifeng Yu , Hejun Zhou , Chunguang Zong
IPC分类号： G01V5/00 , G01N23/046
摘要： The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.

7. 发明申请

US20150192531A1 VEHICULAR RADIATION INSPECTION SYSTEM 有权
标题翻译：车辆辐射检查系统
公开(公告)号：US20150192531A1
公开(公告)日：2015-07-09
申请号：US14412516
申请日：2013-07-02
申请人： Nuctech Company Limited , Tsinghua University
发明人： Jianmin Li , Yinong Liu , Yulan Li , Chunguang Zong , Hui Gong , Qingping Huang , Weifeng Yu
IPC分类号： G01N23/10 , G01V5/00
CPC分类号： G01N23/10 , G01N23/04 , G01N2223/301 , G01N2223/308 , G01V5/0016 , G01V5/0066
摘要： The present invention discloses a vehicular radiation inspection system comprising a mobile vehicle body, a detection arm, a radiation source and a detector. The vehicular radiation inspection system further comprises a following mechanism separated from the detection arm. The following mechanism contains radiation protection material, and the following mechanism follows the detection arm to move in a non-contact manner during inspection of the inspected object, so as to prevent radiation leakage. In the present invention, it does not need to infuse radiation protection material having a high density, such as lead, into the detection arm. Therefore, it can effectively decrease the weight of the detection arm, and it does not need to provide a balance counterweight on the mobile vehicle body on which the detection arm is carried, thereby effectively solving the problem that the vehicular radiation inspection system has an excessively large mass. Meanwhile, in the present invention, the moving process of the following mechanism is accurately controlled, so as to prevent the following mechanism from hitting the detection arm.
摘要翻译：本发明公开了一种包括移动车身，检测臂，辐射源和检测器的车辆辐射检查系统。车辆辐射检查系统还包括与检测臂分离的跟随机构。以下机构包含辐射防护材料，并且在检查被检查物体的检查期间，跟随检测臂的机构以非接触的方式移动，以防止辐射泄漏。在本发明中，不需要将诸如铅的高密度的辐射防护材料注入到检测臂中。因此，能够有效地降低检测臂的重量，并且不需要在携带检测臂的移动体上提供平衡配重，从而有效地解决了车辆用辐射检查系统过度的问题大量。同时，在本发明中，精确地控制以下机构的移动过程，以防止以下机构撞击检测臂。

8. 发明授权

US11614413B2 Back scattering inspection system and back scattering inspection method 有权
公开(公告)号：US11614413B2
公开(公告)日：2023-03-28
申请号：US17255968
申请日：2020-01-03
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED , NUCTECH (BEIJING) COMPANY LIMITED
发明人： Jianmin Li , Li Zhang , Yuanjing Li , Zhiqiang Chen , Hao Yu , Shangmin Sun , Bicheng Liu , Weizhen Wang , Dongyu Wang , Yuan Ma , Yu Hu , Chunguang Zong
IPC分类号： G01N23/20008 , G01N23/203
摘要： The present disclosure provides a back scattering inspection system and a back scattering inspection method. The back scattering inspection system includes a frame and a back scattering inspection device. The rack includes a track arranged vertically or obliquely relative to the ground, and a space enclosed by the track forms an inspection channel; and the back scattering inspection device includes a back scattering ray emitting device and a back scattering detector, and the back scattering inspection device is movably disposed on the track for inspecting an inspected object passing through the inspection channel. The back scattering inspection system can perform back scattering inspection on a plurality of surfaces of the inspected object.

9. 发明授权

US10948427B2 Scanned image correction apparatus, method and mobile scanning device 有权
公开(公告)号：US10948427B2
公开(公告)日：2021-03-16
申请号：US16231373
申请日：2018-12-21
申请人： Tsinghua University , Nuctech Company Limited
发明人： Ke Li , Jianmin Li , Weifeng Yu , Yulan Li , Xuejing Yang , Yuanjing Li , Chunguang Zong , Zhiqiang Chen , Li Zhang
IPC分类号： G01N23/04
摘要： The present disclosure provides a scanned image correction apparatus, method and a mobile scanning device. The apparatus includes an image collector, an arm swing detector, and an image processor. The image collector is configured to collect a scanned image of an object under inspection during a scanning process of scanning the object under inspection by the mobile scanning device, and determine an image parameter of the scanned image. The arm swing detector is disposed at a monitor point on a detector arm of the mobile scanning device, and configured to detect a displacement offset of the detector arm in a specified direction and build an arm swing model of the detector arm. The image processor is configured to determine a change relationship between the image parameter of the scanned image and the displacement offset of the detector arm, and correct the scanned image based on the change relationship.

10. 发明申请

US20180164449A1 RADIATION DETECTION APPARATUS AND METHOD, DATA PROCESSING METHOD AND PROCESSOR 审中-公开
公开(公告)号：US20180164449A1
公开(公告)日：2018-06-14
申请号：US15719571
申请日：2017-09-29
申请人： Nuctech Company Limited , Tsinghua University
发明人： Yuanjing Li , Ziran Zhao , Jianmin Li , Yulan Li , Weibin Zhu , Xiang Zou , Qingjun Zhang , Chunguang Zong , Xiaolin Zhao , Shuwei Li , Junxiao Wang
IPC分类号： G01T1/24
CPC分类号： G01T1/248 , G01T1/17
摘要： This disclosure provides a radiation detection apparatus and a method, a data processing method and a processor, which relates to the field of radiation detection technology. Wherein, the radiation detection apparatus of this disclosure comprises: a radiation detector which generates an electrical signal by interacting with X-rays; an Analog-to-Digital Converter (ADC) which is coupled to the radiation detector and transmits the electrical signal to a waveform data; and a data processor which receives the waveform data from the ADC, determines the number of single photon signals according to the waveform data, and determines whether an integral signal and/or a count signal of the waveform data will be used for imaging according to the number of the single photon signals.

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