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Safety CT inspection and inspector for liquid by ray resource

A technology of safety detection and ray source, which is applied in the direction of material analysis using radiation, measuring devices, material analysis using wave/particle radiation, etc., can solve the problems that imaging detection cannot be realized, and achieve safe and reliable use and detection accuracy High, easy masking effect

Active Publication Date: 2006-05-31
TSINGHUA UNIV +1
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Problems solved by technology

This X-ray scanning detection method, which performs imaging by distinguishing the density difference of the inspected object, cannot realize the imaging detection of liquid objects with uniform density distribution.

Method used

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  • Safety CT inspection and inspector for liquid by ray resource

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Embodiment Construction

[0017] Referring to the accompanying drawings, the present invention includes a radiation source 1 using an X-ray machine or an isotope, a detector and a data collector 4 of an integral module structure, and a computer data processor 6 . The detector adopts a solid detector or a gas detector, and the data collector includes a data amplification forming circuit that can work in a current integration mode or a counting mode. The computer data processor 6 includes a database of hazardous substance densities. The ray source 1 is placed on one side of the rotating platform mechanism 3 where liquid items to be inspected can be placed, and the detector and data collector 4 are placed on the other side of the rotating platform mechanism 3 and facing the X and γ-ray beams emitted by the ray source 1 . The data output cables of the detector and the data collector 4 are connected with the computer data processor 6 . The coordinated work of the ray source 1 , the detector and the data c...

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Abstract

A method for carrying out CT safety detection on liquid by radioactive source includes setting detected liquid article on rotary platform, emitting ray on liquid article by radioactive source and passing ray through said article to be received by detector and data collector just facing ray beam and to be formed as projective data, transmitting projective data to computer data processor for obtaining liquid density of detected liquid article, comparing obtained density to density of dangerous article stored in databank and displaying detection result of detected liquid article in direct ¿C viewing way.

Description

technical field [0001] The invention relates to the technical field of radiation imaging detection, in particular to a method and a device for carrying out CT safety detection on liquid with a radiation source. Background technique [0002] In the security inspection system of civil aviation, it is necessary to inspect the liquid items carried by passengers without opening them. The inspection methods used in the prior art mainly include: chemical methods, electromagnetic methods and neutron detection methods. Chemical detection methods are divided into odor recognition method and ion scanning explosive detection method, etc. These methods are often seriously affected by the packaging and sealing of the detected object in practical applications, and chemical detection methods have strong sensitivity and high false detection rate. shortcoming. Electromagnetic detection methods are susceptible to electromagnetic interference due to weak signals, and cannot detect liquid item...

Claims

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Application Information

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IPC IPC(8): G01N23/02G01N23/00G01N35/00
Inventor 胡海峰李元景吴万龙李玉兰张丽高文焕刘以农桑斌齐明睿何文俊
Owner TSINGHUA UNIV
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