Method and device for security check of liquid article

Abstract

The invention discloses a method and a device for security check of a liquid article. The method is characterized by comprising the following steps: firstly determining whether the package of the liquid article is transparent, semi-transparent or opaque; carrying out the Raman spectrum analysis on the detected liquid article by utilizing a Raman spectrum module under the situation that the package of the liquid article is transparent or semi-transparent, and judging whether the detected liquid article is a hazardous article or a suspicious article; and checking the detected liquid article by utilizing a ray two-energy scanning technology under the situation that the package of the detected liquid article is opaque, and judging whether the detected liquid article is the hazardous article or the suspicious article. The method has the advantages of high check speed, capability of recognizing the substance, applicability to the packaging materials in different shapes and different types, high accuracy of the check result and the like. The method and the device are suitable for the security check in public fields with high security check requirement, complicated detected liquid articles, a great number of people and high personnel flow rate and the like.

Description

technical field [0001] The invention relates to the technical fields of radiation inspection technology and Raman spectrum analysis, in particular to a method and equipment for quick safety inspection and substance identification of liquid objects by performing ray dual-energy CT scanning analysis and Raman spectrum analysis on liquid objects. Background technique [0002] In recent years, terrorists' means of targeting violent terrorist activities in public places have become more and more diverse, and various dangerous chemicals and other dangerous liquids have also become one of the means of terrorist activities that endanger the public. , the security inspection requirements for liquid items carried with you are added. Therefore, effective security inspection methods and equipment are required to meet the requirements. [0003] Currently, there are four types of methods that can be used for the safety inspection of liquid items: chemical method, electromagnetic method, ...

AI Technical Summary

Problems solved by technology

The electromagnetic method itself is susceptible to adverse effects such as metal packaging, thick material packaging, and irregular shaped bottles

Therefore, in the practical case of complex packaging materials, electromagnetic methods have obvious limitations and cannot perform substance identification

[0006] 3) The use of the neutron method will cause the phenomenon of "neutron activation", that is, the liquid that has passed the neutron inspection will have radiation residues

Moreover, due to the strong penetrating ability of neutrons, the radiation shielding is more complicated, the equipment occupies a large area, is not portable, and is not suitable for most public domains.

[0007] 4) X-ray methods are divided into two-dimensional X-ray scanning technology and CT technology. Generally, X-ray two-dimensional scanning technology is mainly used for the inspection of luggage items, and cannot judge whether liquid items are dangerous. CT technology has the advantage of not being affected by packaging materials, and can Conduct liquid safety inspections, but the inspection speed is relatively slow, and identification of substances, etc. cannot be carried out

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