Detection method, apparatus and system

Patent metadata

Field	Value
Publication number	US-12326408-B2
Application number	US-202118266507-A
Country	US
Kind code	B2
Filing date	Nov 25, 2021
Priority date	Dec 10, 2020
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

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.

First claim

What is claimed is:

1. A detection method, comprising:
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,
wherein the preset feature information comprises a preset track range of the object of the target type or a preset force of the object of the target type on the particle, the preset track range comprises at least one of a preset range of a scattering angle and a preset distribution of the scattering angle, and the preset force comprises at least one of a preset scattering force and a preset blocking force;
processing the first track and the second track to obtain feature information of the object under detection comprises: obtaining, based on the first track and the second track of the particle, a first track range of the particle penetrating the object under detection or a first force of the object under detection on the particle;
determining, according to the feature information and the preset feature information of the object of the target type, the detection result of the object under detection comprises:
acquiring the preset track range or the preset force in the preset feature information of the object of the target type; and
determining, under a condition that the first track range matches the preset track range or under a condition that the first force matches the preset force, that the object under detection is the object of the target type.

2. The detection method according to claim 1 , wherein the particle comprises at least one of a muon and an electron.

3. A detection system, comprising:
a first detector, configured to detect information of at least two first positions through which a particle passes before penetrating an object under detection;
a second detector, configured to detect information of at least two second positions through which the particle passes after penetrating the object under detection;
a carrying unit, configured to carry the object under detection; and
a detection unit, configured to perform the method according to claim 1 .

4. The detection system according to claim 3 , wherein the first detector is arranged at one side of the carrying unit, and the first detector comprises at least two detectors; and
the second detector is arranged at the other side of the carrying unit, and the second detector comprises at least two detectors.

5. The detection system according to claim 3 , wherein the particle comprises at least one of a muon and an electron.

6. The detection system according to claim 4 , wherein the detectors comprise at least one of a drift tube, a scintillation crystal bar, and a position sensitive detector.

7. The detection system according to claim 3 , wherein the carrying unit comprises at least one of a tray or a conveyor.

8. A detection apparatus, comprising:
an acquisition module, configured to acquire 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;
a first reconstruction module, configured to reconstruct, based on the information of the at least two first positions, a first track before the particle penetrates the object under detection;
a second reconstruction module, configured to reconstruct, based on the information of the at least two second positions, a second track after the particle penetrates the object under detection;
a processing module, configured to process the first track and the second track to obtain feature information of the object under detection; and
a detection module, configured to determine, according to the feature information and preset feature information of an object of a target type, a detection result of the object under detection,
wherein the preset feature information comprises a preset track range of the object of the target type or a preset force of the object of the target type on the particle, the preset track range comprises at least one of a preset range of a scattering angle and a preset distribution of the scattering angle, and the preset force comprises at least one of a preset scattering force and a preset blocking force;
the processing module is configured to obtain, based on the first track and the second track of the particle, a first track range of the particle penetrating the object under detection or a first force of the object under detection on the particle;
the detection module comprises:
a first acquisition unit, configured to acquire the preset track range or the preset force in the preset feature information of the object of the target type; and
a first determination unit, configured to determine, under a condition that the first track range matches the preset track range or under a condition that the first force matches the preset force, that the object under detection is the object of the target type.

9. The detection apparatus according to claim 8 , wherein the particle comprises at least one of a muon and an electron.

Assignees

• Nuctech Co Ltd
• Univ Tsinghua

Inventors

• Zeng Zhi
• Li Jianmin
• Ruan Ming
• Deng Yanli
• Zhu Guoping
• Li Junli

Classifications

• G01N2223/643

  object on conveyor · CPC title

• G01N2223/3307

  source and detector fixed; object moves · CPC title

• G01N23/20025

  Sample holders or supports therefor · CPC title

• G01N33/2028

  Metallic constituents · CPC title

• G01V5/226

  using tomography · CPC title