Detector in a scattered configuration applied to X/gamma ray container/vehicle inspection equipment

Patent metadata

Field	Value
Publication number	US-9915751-B2
Application number	US-201414769308-A
Country	US
Kind code	B2
Filing date	Jul 22, 2014
Priority date	Jul 29, 2013
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

The present application discloses a detector module, which is arranged on a detector arm, comprising one or a plurality of detector units arranged in a scattered configuration, wherein each of the detector units in the detector module is installed aiming at a beam center of a ray source, thus improving imaging quality and reducing the size of a detector frame drastically.

First claim

What is claimed is:

1. A detector comprising a plurality of detector modules arranged on a vertical detector arm, each detector module comprising:
a plurality of detector units arranged in a scattered configuration, wherein each of the detector units of each detector module is arranged to aim at a beam center of a ray source, and
a detector circuit board, the plurality of detector units arranged on the detector circuit board,
wherein the shape of each detector circuit board is a parallelogram, and
wherein a difference in adjacent interior angles of each parallelogram is gradually increased according to a position of each detector circuit board of the plurality of detector modules on the vertical detector arm.

2. The detector of claim 1 , wherein the ray source is an X/Gamma-ray source.

3. The detector of claim 1 , wherein an angle at which each of the detector units is installed is different from each other and related to a height of the corresponding detector unit in the detector arm, so as to ensure each of the detector units to be aimed at the beam center.

4. The detector of claim 1 ,
wherein, when the detector circuit board on the detector arm is arranged in the same horizontal plane position as the ray source, the shape of the detector circuit board is a rectangle; and
wherein, when the detector circuit board on the detector arm is arranged above or below the same horizontal plane position as the ray source, the detector circuit board is a parallelogram in which the difference in adjacent interior angles is gradually increased, wherein the smaller interior angle of the parallelogram is equal to an included angle between the detector arm and ray beams from a beam center of the ray source.

5. The detector of claim 1 , wherein the detector units are fixed to the detector circuit board and connected to a data acquisition and control module via connection terminals, and crystals and diodes of the detector units are coupled with each other by way of end face or side face.

6. A method for installing detector modules, wherein each of the detector modules comprises a plurality of detector units arranged in a scattered configuration, and the method comprises:
installing the detector modules on a vertical detector arm; and
aiming each of the detector units in each of the detector modules at a beam center of a ray source,
wherein each of the detector modules comprises a detector circuit board, on which the respective plurality of detector units are arranged, and
wherein the shape of each detector circuit board is a parallelogram in which the difference in adjacent interior angles is gradually increased according to a position of the detector circuit board on the detector arm.

7. The method of claim 6 , wherein the ray source is an X/Gamma-ray source.

8. The method of claim 6 , wherein an angle at which each of the detector units is installed is related to a height of the corresponding detector unit in the detector arm.

9. The method of claim 6 ,
wherein the detector circuit board on the detector arm which is arranged in the same horizontal plane position as the ray source is of a rectangular shape, and
wherein each of the detector circuit boards on the detector arm which is arranged above or below the same horizontal plane position as the ray source is of a parallelogram shape, in which the difference in adjacent interior angles is gradually increased, wherein the smaller interior angle of the parallelogram is equal to an included angle between the detector arm and ray beams from a beam center of the ray source.

10. The method of claim 6 , further comprising: fixing the detector units to the detector circuit boards and connecting the detector units to a data acquisition and control module via connection terminals, and coupling crystals of the detector units with diodes thereof by way of end face or side face.

11. A ray detection system, comprising a ray imaging subsystem configured to generate ray transmission images, wherein the ray imaging subsystem comprises:
a ray source configured to generate ray pulses capable of penetrating a detected object;
detector modules arranged on a vertical detector arm and each comprising a plurality of detector units arranged in a scattered configuration, wherein each of the detector units in each of the detector module is arranged to aim at the ray source, and the detector modules receive the ray pulses generated from the ray source as being capable of penetrating the detected object and converting the ray pulses into output signals; and
a data acquisition and control module configured to generate digital image signal in real time according to the output signals,
wherein each of the detector modules comprises a detector circuit board on which the respective plurality of detector units are arranged,
wherein the shape of each detector circuit board is a parallelogram in which the difference in adjacent interior angles is gradually increased according to a position of the detector circuit board on the detector arm.

12. The ray detection system of claim 11 , wherein an angle at which each of the detector units is installed is related to a height of the corresponding detector unit in the detector arm.

13. The ray detection system of claim 11 ,
wherein the detector circuit board on the detector arm which is arranged in the same horizontal plane position as the ray source is of a rectangular shape, and
wherein each of the detector circuit boards on the detector arm which is arranged above or below the same horizontal plane position as the ray source is of a parallelogram shape, in which the difference in adjacent interior angles is gradually increased, wherein the smaller interior angle of the parallelogram is equal to an included angle between the detector arm and ray beams from a beam center of the ray source.

14. The ray detection system of claim 11 , wherein the detector units are fixed to a detector circuit board and connected to a data acquisition and control module via connection terminals, and crystals and diodes of the detector units are coupled with each other by way of end face or side face.

Assignees

• Nuctech Co Ltd
• Univ Tsinghua

Inventors

• Kang Kejun
• Li Jianmin
• Li Yuanjing
• Li Yulan
• Gu Jingyu
• Wang Weizhen
• Song Quanwei
• Zhang Qingjun
• Ming Shenjin
• Wang Xuewu
• Gong Hui
• Xue Tao

Classifications

• G01N23/046

  using tomography, e.g. computed tomography [CT] · CPC title

• G01V5/0075

  Physics · mapped topic

• G01V5/0016 Primary

  Physics · mapped topic

• G01V5/22 Primary

  Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays · CPC title

• G01V5/26

  Passive interrogation, i.e. by measuring radiation emitted by objects or goods · CPC title