公开(公告)号：US11619599B2

公开(公告)日：2023-04-04

申请号：US16935415

申请日：2020-07-22

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Zhi Zeng ,  Xingyu Pan ,  Xuewu Wang ,  Junli Li ,  Ming Zeng ,  Jianmin Li ,  Ziran Zhao ,  Jianping Cheng ,  Hao Ma ,  Hui Zhang ,  Hao Yu ,  Bicheng Liu

IPC: G01N23/201 ,  G01N23/02 ,  G06K9/62

Abstract: The present disclosure provides a substance identification device and a substance identification method. The substance identification device comprises: a classifier establishing unit configured to establish a classifier based on scattering density values reconstructed for a plurality of known sample materials, wherein the classifier comprises a plurality of feature regions corresponding to a plurality of characteristic parameters for the plurality of known sample materials, respectively; and an identification unit for a material to be tested, configured to match the characteristic parameter of the material to be tested with the classifier, and to identify a type of the material to be tested by obtaining a feature region corresponding to the characteristic parameter of the material to be tested.

公开(公告)号：US09491842B2

公开(公告)日：2016-11-08

申请号：US14487960

申请日：2014-09-16

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Huaibi Chen ,  Jianping Cheng ,  Shuxin Zheng ,  Jiaru Shi ,  Chuanxiang Tang ,  Qingxiu Jin ,  Wenhui Huang ,  Yuzheng Lin ,  Dechun Tong ,  Shi Wang

IPC: H05H9/04 ,  H05H7/02

CPC classification number: H05H9/04 ,  H05H9/048 ,  H05H2007/027

Abstract: The present disclosure discloses a method for controlling a standing wave accelerator and a system thereof. The method comprises: generating, by an electron gun, an electron beam; injecting the electron beam into an accelerating tube; and controlling a microwave power source to generate and input microwave with different frequencies into the accelerating tube, so that the accelerating tube switches between different resonant modes at a predetermined frequency to generate electron beams with corresponding energy. According to the above solution, it only needs to change the output frequency of the microwave power source in the process of adjusting energy, without making any change to the accelerating structure per se. Therefore, the method is easy to operate. In addition, the structure of the accelerating tube in the above system is simple, without adding a particular regulation apparatus.

Abstract translation: 本公开公开了一种用于控制驻波加速器及其系统的方法。 该方法包括：通过电子枪产生电子束; 将电子束注入加速管中; 并且控制微波功率源以将不同频率的微波产生并输入到加速管中，使得加速管以预定频率在不同谐振模之间切换以产生具有相应能量的电子束。 根据上述方案，只需要在调节能量的过程中改变微波功率源的输出频率，而不会对加速结构本身造成任何变化。 因此，该方法易于操作。 此外，上述系统中的加速管的结构简单，而不添加特定的调节装置。

公开(公告)号：US20180156741A1

公开(公告)日：2018-06-07

申请号：US15716921

申请日：2017-09-27

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Kejun Kang ,  Jianping Cheng ,  Zhiqiang Chen ,  Ziran Zhao ,  Junli Li ,  Xuewu Wang ,  Zhi Zeng ,  Ming Zeng ,  Yi Wang ,  Qingjun Zhang ,  Jianping Gu ,  Xi Yi ,  Bicheng Liu ,  Guangming Xu ,  Yongqiang Wang

IPC: G01N23/04 ,  G01N23/08 ,  G01N23/20

CPC classification number: G01N23/04 ,  G01N23/046 ,  G01N23/06 ,  G01N23/20008 ,  G01N2223/304 ,  G01N2223/33 ,  G01N2223/401 ,  G01N2223/419 ,  G01N2223/652 ,  G01V5/0016 ,  G01V5/0025 ,  G01V5/0091

Abstract: Inspection devices and inspection methods are disclosed. The inspection method includes: performing X-ray scanning on an object being inspected so as to generate an image of the object being inspected; dividing the image of the object being inspected to determine at least one region of interest; detecting interaction between a cosmic ray and the region of interest to obtain a detection value; calculating a scattering characteristic value and/or an absorption characteristic value of the cosmic ray in the region of interest based on size information of the region of interest and the detection value; and discriminating a material attribute of the region of interest by means of the scattering characteristic value and/or the absorption characteristic value. With the above technical solutions, inspection accuracy and inspection efficiency may be improved.

公开(公告)号：US08989344B2

公开(公告)日：2015-03-24

申请号：US13722014

申请日：2012-12-20

Applicant: Tsinghua University

Inventor： Hongchang Yi ,  Qian Lin ,  Jianping Cheng

IPC: G01N23/223 ,  G01N23/087 ,  G01N23/20

CPC classification number: G01N23/20091

Abstract: A system and a method for measuring an ash content and a calorific value of a coal are provided. The system comprises: an X ray device, disposed over the coal and configured to emit an X ray to the coal; at least one X ray measuring device, disposed over the coal and configured to measure an energy spectrum of an X ray reflected by the coal; a distance sensor, disposed over the coal and configured to measure a distance between the coal and the at least one X ray measuring device; and a computing device, configured to receive the energy spectrum and the distance from the at least one X ray measuring device and the distance sensor and to compute the ash content and the calorific value of the coal according to the energy spectrum and the distance.

Abstract translation: 提供了一种用于测量煤的灰分含量和发热量的系统和方法。 该系统包括：X射线装置，设置在煤上并被配置为向煤射出X射线; 至少一个X射线测量装置，设置在煤上并被配置成测量由煤反射的X射线的能谱; 距离传感器，设置在煤上并被配置成测量煤和至少一个X射线测量装置之间的距离; 以及计算装置，被配置为从所述至少一个X射线测量装置和所述距离传感器接收所述能谱和所述距离，并且根据所述能谱和所述距离计算所述煤的灰分含量和所述发热量。