Double-energy X-ray spiral CT device for detecting liquid safety, and detection method thereof

Abstract

The invention relates to a double-energy X-ray spiral CT system for detecting liquid safety, which comprises a detecting device consisting of an X-ray source, a rotary table, a detector or an interlayer detector and a data acquisition unit, and a control part consisting of a microprocessor and a controller, wherein the front end of the detecting device is provided with the X-ray source; the X-raysource is the switchable high-voltage X-ray source or the fixed high-voltage X-ray source; the middle part of the detecting device is provided with the spiral lifting rotary table used for placing a detected liquid; the rear side of the spiral lifting rotary table is provided with the detector or the interlayer detector; the data acquisition unit is connected with the detector or the interlayer detector; the control part comprises the microprocessor and the controller connected with the microprocessor; the controller is connected with the X-ray source and the spiral lifting rotary table; and the microprocessor is connected with the data acquisition unit. The method comprises irradiation, detection, acquisition, comparison, and obtaining a detection result. The system can detect liquid density and equivalent atomic number and ensures to accurately judge liquid property.

Description

technical field [0001] The present invention relates to a liquid safety detection device and its detection method, in particular to a device and its detection method for detecting liquid density and equivalent atomic number by using dual-energy X-ray spiral CT, belonging to liquid safety detection The field of radiation imaging technology. Background technique [0002] With the increasingly rampant sabotage activities of criminals and terrorists and the high-tech nature of sabotage methods, as countries fight against crime and terrorism more and more, in civil aviation, gymnasiums, important facilities and other places, the intensity of safety inspection is continuously strengthened , the detection of liquids carried by people entering the above places is also continuously strengthened, but due to the types of liquids and their complex structures, it has brought more and more difficulties to safety detection, and it is also more and more difficult to distinguish harmful liqu...

AI Technical Summary

Problems solved by technology

But the biggest defect of this device and its method is: although the density of different liquids has a certain difference, the density of many liquids in real life is relatively close, so the detection is not accurate enough, such as the CT value of peanut oil and thinner Close, the CT value of Erguotou wine and paint is also very close, it is difficult to distinguish the liquid type by CT value, in this case, it will undoubtedly bring hidden dangers to safety inspection

However, their equivalent atomic numbers are quite different

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