公开(公告)号：US20170186507A1

公开(公告)日：2017-06-29

申请号：US15277828

申请日：2016-09-27

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Kejun KANG ,  Ying LI ,  Jianmin LI ,  Yulan LI ,  Guoping ZHU

IPC: G21K1/04 ,  G01V5/00

CPC classification number: G21K1/043 ,  G01V5/0016 ,  G21K1/04

Abstract: A collimator and an inspection system having the collimator are disclosed. The collimator includes: a collimator body including a first part and a second part; a collimating slit formed between the first part and the second part and having a first end and a second end in a longitudinal direction thereof; and a shielding member which is movable relative to the collimator body such that both a beam divergent angle and an elevation angle of a ray beam propagating through the collimating slit are varied. An inspection system and an inspection method for scanning a vehicle are further disclosed.

公开(公告)号：US20160178795A1

公开(公告)日：2016-06-23

申请号：US14975387

申请日：2015-12-18

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Yanli DENG ,  Qitian MIAO ,  Junli LI ,  Guoping ZHU ,  Weiqiang GUAN ,  Yuxin HU ,  Shenjin MING ,  Ming HUANG

IPC: G01V13/00

CPC classification number: G01V13/00 ,  G01N23/083 ,  G01N2223/303

Abstract: The disclosure provides a method for measuring X-ray energy of an accelerator in an inspection system. the method comprises: building a database comprising correspondence between half-value layer (HVL) and energy under a predetermined condition; measuring HVL for X-rays of the accelerator in the inspection system on line under the same predetermined condition; and comparing the measured HVL with the HVLs in the database comprising correspondence between HVL and energy to determine the X-ray energy of the accelerator. The method is applicable to a large-scale container/vehicle inspection system for measurement of X-ray energy/HVL of the accelerator so as to acquire source state of the inspection system in real time.

Abstract translation: 本公开提供了一种用于测量检查系统中的加速器的X射线能量的方法。 该方法包括：构建包含半值层（HVL）与预定条件下的能量之间的对应关系的数据库; 在相同的预定条件下测量在检查系统中的加速器的X射线的HVL; 并且将所测量的HVL与数据库中的HVL进行比较，其中包括HVL和能量之间的对应关系，以确定加速器的X射线能量。 该方法适用于用于测量加速器的X射线能量/ HVL的大型集装箱/车辆检查系统，以便实时获取检查系统的源状态。

公开(公告)号：US20230213666A1

公开(公告)日：2023-07-06

申请号：US18146101

申请日：2022-12-23

Applicant: NUCTECH COMPANY LIMITED

Inventor： Jianmin LI ,  Guoping ZHU ,  Ming RUAN ,  Kun ZHAO ,  Yanli DENG ,  Junli LI ,  Qitian MIAO

IPC: G01T1/20

CPC classification number: G01T1/2002 ,  G01T1/2006

Abstract: Provided is a device of detecting a ray dose adaptable for coupling with a terminal, including: a housing, a scintillator and a light shielding layer. The housing has an accommodating space and a window, the accommodating space is in communication with the window; the scintillator is configured to receive a ray and convert a received ray into a visible light, the scintillator is located in the accommodating space, the scintillator covers the window, an outer surface of the scintillator includes a first outer surface and a second outer surface, and the first outer surface is adapted to a camera of the terminal; and the light shielding layer is configured to shield a visible light in an external environment from illuminating on the scintillator, the light shielding layer is arranged on the second outer surface of the scintillator.

公开(公告)号：US20240027371A1

公开(公告)日：2024-01-25

申请号：US18266507

申请日：2021-11-25

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Zhi ZENG ,  Jianmin LI ,  Ming RUAN ,  Yanli DENG ,  Guoping ZHU ,  Junli LI

IPC: G01N23/10 ,  G01N23/20025

CPC classification number: G01N23/10 ,  G01N23/20025 ,  G01N2223/643 ,  G01N2223/3307

Abstract: Embodiments of the present application provide a detection method. The detection method includes: acquiring information of at least two first positions through which a particle passes before penetrating an object under detection, and information of at least two second positions through which the particle passes after penetrating the object under detection, wherein the object under detection is a metal product; reconstructing, based on the information of the at least two first positions, a first track before the particle penetrates the object under detection; reconstructing, based on the information of the at least two second positions, a second track after the particle penetrates the object under detection; processing the first track and the second track to obtain feature information of the object under detection; and determining, according to the feature information and preset feature information of an object of a target type, a detection result of the object under detection.