Liquid detecting method and device and security inspection equipment

Abstract

The invention provides a liquid detecting method and device and security inspection equipment, and relates to the field of security inspection. The liquid detecting method comprises the following steps: acquiring detecting data of liquid to be detected through a dual-energy X-ray detector; determining a base material decomposition coefficient of the liquid to be detected according to the detectingdata of the liquid to be detected on the basis of preset base material information; and determining an effective atomic number and feature density of the liquid to be detected according to the base material decomposition coefficient of the liquid to be detected. By the method, the base material decomposition coefficient of the liquid to be detected can be obtained by ray detecting data acquired by the dual-energy detector on the basis of the preset base material information, the effective atomic number and feature density of the liquid to be detected according to the base material decomposition coefficient, and thus, the liquid is recognized. Because the dual-energy X-ray detector is high in efficiency and large in detecting range, recognition of liquid in a plurality of containers can berealized simultaneously, the detecting time is shortened, and efficiency of safe detection of liquid is improved.

Description

technical field [0001] The invention relates to the field of security inspection, in particular to a liquid detection method and device and security inspection equipment. Background technique [0002] At present, in public places such as subways and airports, it is often encountered that passengers carry containers containing liquids, and the liquids carried by passengers need to be checked separately during the subway security check process. [0003] In the prior art, testing is often carried out by means of a test drink, or a liquid tester is used for liquid detection. The liquid meter is a small device similar to the principle of CT (Computed Tomography, computerized tomography) equipment for the detection of liquid bottles alone. It can identify the material properties of the liquid in the bottle and then judge the danger level; but the scanning space of the liquid meter is limited. , it is impossible to detect multiple large-capacity liquid bottles at the same time, wh...

AI Technical Summary

Problems solved by technology

The liquid meter is a small device similar to the principle of CT (Computed Tomography, computerized tomography) equipment for the detection of liquid bottles alone. It can identify the material properties of the liquid in the bottle and then judge the danger level; but the scanning space of the liquid meter is limited. , cannot detect multiple large-capacity liquid bottles at the same time, which reduces the efficiency of security inspection

In addition, in the prior art, CT equipment can also be used for detection, but the detection efficiency of CT equipment is low, which is not conducive to improving the efficiency of security inspection, and is not suitable for crowded public security inspection places

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