Combined Spectral Detection Method for Import and Export Inspection of Bulk and Valuable Goods

Abstract

The invention discloses a combined spectral detection method for import and export detection of bulk and valuable goods, and the method is realized combined with a spectral detector. The complete machine of the spectral detector comprises a main controller, a user interactive display screen, an integrated multi-path regulated power supply, an LIBS subsystem, a ranging subsystem, a cassegrain telescope, an XRF subsystem and a BLR subsystem. The combined spectral detection method comprises two steps: long-range LIBS rough detection and short-range comprehensive spectral fine measurement. The combined spectral detection method has the beneficial effects: simultaneous detection of light and heavy elements is realized, simultaneous detection of atomic structures and high molecular structures is realized by combining LIBS, XRF and BLR, hardware resources are saved by multiplexing the BLR and LIBS with spectral channels, and non-metallic elements such as sulfur can be detected by spectral analysis of LIBS covering a near-infrared section. The instrument and method can solve the problems of feature recognition and combined detection of elements and molecular structures of cross-border goods to be detected, and realize quick identification of bulk and valuable typical cross-border goods and on-site detection of hazardous materials in goods.

Description

technical field [0001] The invention relates to a laser spectrum detection method, in particular to a spectrum detection method using combined detection of atoms and molecules, which is suitable for non-destructive on-site import and export of bulk goods and valuables, and belongs to the field of photoelectric detection. Background technique [0002] At present, in the detection of cross-border goods, there is a lack of powerful and rapid measurement methods for the anti-counterfeiting inspection of typical goods such as bulk and valuables and the on-site non-destructive testing of harmful elements. Anti-counterfeiting detection and detection of harmful substances involves the joint detection and identification of elements and molecular structures, as well as the high-precision full-coverage detection of basic elements, which requires a combination of various measurement and analysis methods and technologies. [0003] Among the optional detection techniques, laser-induced br...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the needs of cross-border cargo anti-counterfeiting inspection and detection of harmful substances, the present invention proposes a combined spectrum detection instrument and method, combining LIBS and XRF to realize simultaneous detection of light and heavy elements; combining LIBS, XRF and BLR, Realize the simultaneous detection of atomic and polymer structures, which can solve the problem of identification and joint inspection of elements and molecular structure features of cross-border goods, and realize rapid identification of bulk and precious cross-border typical goods and on-site detection of hazardous substances in goods

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