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Article detection equipment and method

A technology for object detection and equipment, applied in the field of radiation detection, can solve problems such as countermeasures

Active Publication Date: 2012-01-11
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, this technique is countered by electromagnetic shielding measures

Method used

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  • Article detection equipment and method
  • Article detection equipment and method
  • Article detection equipment and method

Examples

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Embodiment Construction

[0067] figure 1 A schematic diagram of an object detection device according to one embodiment of the present invention is shown. Such as figure 1 As shown, the article detection equipment includes: an X-ray machine that uses an electron beam 1 to bombard an electron target 2 to generate X-rays 3; an X-ray machine collimator 4 that collimates the X-rays 3 emitted from the X-ray machine, and the X-ray machine 3 After being collimated, it is shaped into a fan beam 5, and the X-ray 6 in the fan beam 5 shoots to the object 7 to be detected, and along the figure 1 The transmission section 8 shown is transmitted through the inspected item 7; and a transmission detector array 10 for detecting X-rays 9 transmitted through the item to form a two-dimensional transmission image of the inspected item 7 .

[0068] Since the X-ray machine, the X-ray machine collimation device 4 and the transmission detector array 10 belong to the traditional technology, and conventional X-ray transmission...

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Abstract

The invention discloses article detection equipment, comprising an X-ray machine, an X-ray machine collimator, a transmission detector array and at least one scattering detector array. Each scattering detector array comprises a plurality of identical detection modules which are arranged into i rows and j lines, wherein an transmission section, transmitted by X-rays, of an article is divided into identical partitioned areas of i rows and xj lines, and the ixj detection modules of each scattering detector array correspond to the ixj partitioned areas of the transmission section of the article in a one-to-one manner, and are used for detecting electron-pair-effect annihilation photons and Compton scattering photons generated by the X-rays at the corresponding partitioned areas, and acquiring atomic number of each partitioned area according to the specific vale of the count of the detected electron-pair-effect annihilation photons to the count of the detected Compton scattering photons, so as to form a three-dimensional image of the article. In addition, the invention further provides a method for detecting the article by using the article detection equipment.

Description

technical field [0001] The invention relates to the field of radiation detection technology, in particular to an item detection device for safety detection of explosives, chemical substances, biological weapons, nuclear materials, drugs and other dangerous items in items and a detection method using the item detection device. Background technique [0002] In the field of security inspection for containers and flight cases, the detection of specific substances is a continuous hot demand. These exotic substances include explosives, chemical substances, biological weapons, nuclear materials, drugs, etc. Many techniques have been developed to address the detection of these items. Among them, X-ray fluoroscopy technology is a very popular technology type, and other technologies such as neutron technology are also candidate technologies that are concerned. The following two technologies are briefly introduced. [0003] 1. X-ray can be divided into traditional transmission techno...

Claims

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Application Information

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IPC IPC(8): G01N23/04
CPCG01N23/04G01V5/0025G01V5/222
Inventor 杨祎罡李铁柱张勤俭张翼金颖康陈庆豪李元景刘以农
Owner TSINGHUA UNIV
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