Prohibited article detection method and prohibited article detection device

Abstract

The invention discloses a prohibited article detection method and a prohibited article detection device. The prohibited article detection method comprises the steps of acquiring a set content of absorption spectrum data of an article to be detected; for each interference sample, determining absorption spectrum data of each interference sample with a preset content ratio; for each interference sample, performing spectrum unfolding on the acquired absorption spectrum data of the article to be detected according to each preset content ratio and the absorption spectrum data of the interference sample with the content ratio to obtain de-interference absorption spectrum data under the interference sample with the content ratio; for each prohibited article, comparing the de-interference absorption spectrum data of the article to be detected under the interference sample with the absorption spectrum data of the standard prohibited article with the set content according to each preset content ratio, and judging whether the article to be detected is the prohibited article according to a comparison result. By the application of the prohibited article detection method and the prohibited article detection device, whether the article to be detected comprising an interference substance is the prohibited article can be judged.

Description

technical field [0001] The invention relates to the field of spectroscopy, in particular to a method and device for detecting contraband items. Background technique [0002] At present, the detection of prohibited items has been widely used in airports, customs, stations, ports, nuclear power plants, government agencies, postal inspection centers, courts, embassies and other places to detect prohibited items carried by people or in luggage , thereby ensuring safety. [0003] An existing detection method for prohibited items is: use X-rays to irradiate the measured object, and display the shape and outline of the measured object according to the principle of X-ray transmission, and display the measured objects with different densities in different colors , for example, organic substances are displayed in orange, inorganic substances are displayed in blue, and mixtures are displayed in green. Detectors can easily identify metal prohibited items such as guns and knives accord...

AI Technical Summary

Problems solved by technology

However, in practical work, common substances that have no characteristic absorption in the terahertz frequency band are often encountered. Some of these substances are mixed with prohibited items, and some are used as packaging materials to cover prohibited items, which interferes with the detection of items to be inspected. May lead to failure to detect whether the item to be inspected is a prohibited item

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