Device and method for carrying out substance identification by double-energy transmission and low-energy scattering

Abstract

The invention provides a device and a method for carrying out substance identification by double-energy transmission and low-energy scattering. The device comprises a rack, a conveyor belt, a roller shaft motor, a main control cabinet, an X-ray generator, a collimator, a double-energy transmission detector, a low-energy front scattering detector, a low-energy back scattering detector, an industrial personal computer, a light barrier and a display, wherein an output end of the light barrier is connected with an input end of the main control cabinet; a control output end of the main control cabinet is respectively connected with a control input end of the X-ray generator, the control input end of the roller shaft motor and the industrial personal computer; the input end of the industrial personal computer is connected with the output end of the double-energy transmission detector, the output end of the low-energy front scattering detector and the output end of the low-energy back scattering detector; the output end of the industrial personal computer is connected with the display. The device and the method focuses on feature extraction and identification of radiation image data and combines a double-energy X-ray transmission image with a low-energy scattering image to solve a real object grey level so as to identify substances by classes, aiming at the situation that packages shield mutually and cannot be detected accurately in a security check field.

Description

technical field [0001] The invention belongs to the technical field of material identification, in particular to a device and method for material identification using dual-energy transmission and low-energy scattering. Background technique [0002] Civil aviation, railways, and road transportation are key industries for production safety. The responsibility for production safety is heavy and the task is arduous, which is related to people's lives, national property and social stability. Especially since the 9.11 incident in the United States, countries all over the world have put "anti-terrorism" on the important agenda. The research and development of safety detection technology and safety detection equipment has become the focus of technological research in various countries, and research in this field has become a future trend. [0003] At present, most X-ray security inspection equipment is based on dual-energy X-ray transmission imaging technology, which is developed on...

AI Technical Summary

Problems solved by technology

Due to mutual occlusion of the objects in the package, it is impossible to accurately extract the true gray level of a single object, but the mixed gray level of two or more objects overlapping, which will inevitably lead to misjudgment and missed judgment.

Images