Method for detecting drugs and explosives by nondestructively penetrating through package

A technology for packaging and explosives, which is applied to measuring devices, instruments, and material analysis through optical means. It can solve the problems of difficult packaging, volume reduction, and parameter adjustment, etc., to achieve easy packaging and solve space offsets. , to achieve the effect of miniaturization

Inactive Publication Date: 2020-06-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of rapid detection of drugs and explosives in the prior art, and there are problems such as difficult adjustment of parameters, difficulty in packaging, and difficulty in shrinking the volume, and provide a device that can detect drugs and explosives through non-destructive packaging. method

Method used

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  • Method for detecting drugs and explosives by nondestructively penetrating through package

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Sample to be tested: Take 5g of nitroglycerin in a blue polyethylene plastic bottle with a thickness of about 1.1mm.

[0037] A Raman detection system that can penetrate packaging without damage, mainly composed of a laser light source, an external light path system, an internal light splitting light path system, and a photoelectric detection system, and the detection is completed through the control of a single-chip microcomputer.

[0038] Among them, the laser light source is composed of two lasers. The incident focus of the 1# laser with a wavelength of 785nm on the blue polyethylene plastic bottle is at the same position as the collection focus of the external optical path system, that is, △S=0; The position of the laser is such that the incident focus of 2# on the blue polyethylene plastic bottle is offset by a certain distance from the collection focus of the external optical path system, that is, ΔS'=8mm. The included angle of the incident beam is ω=45°; the time...

Embodiment 2

[0045] Sample to be tested: Take 5g of potassium nitrate in a white polypropylene bottle with a thickness of about 1.1mm.

[0046] A Raman detection system that can penetrate packaging without damage, mainly composed of a laser light source, an external light path system, an internal light splitting light path system, and a photoelectric detection system, and the detection is completed through the control of a single-chip microcomputer.

[0047] Among them, the laser light source is composed of two lasers. The incident focus of the 1# laser with a wavelength of 785nm on the white polypropylene plastic bottle is at the same position as the collection focus of the external optical path system, that is, △S=0; adjust the translation of the 2# laser with a wavelength of 785nm Position the laser so that the incident focus of 2# on the white polypropylene bottle is offset by a certain distance from the collection focus of the external optical path system, that is, ΔS'=6mm. The includ...

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Abstract

The invention relates to a method for detecting drugs and explosives by nondestructively penetrating through package, and belongs to the field of drug and explosive detection, namely, chemical material detection. The invention aims to solve the problems of difficulty in parameter adjustment, difficulty in packaging, difficulty in size reduction and the like in the prior art, and provides a methodfor detecting drugs and explosives by nondestructively penetrating through a package. For the current situation that the thickness of a common package in the commercialized market is about 0.9 mm-2 mm, non-destructive penetrating package raman detection can be realized. According to the invention, the problem of space offset S can be effectively solved, a circular ring optical fiber is not neededto receive a signal, the maximum penetrable thickness is 2.8 mm, and the thickness of most package in the market is met.

Description

technical field [0001] The invention relates to a method for detecting narcotics and explosives that can penetrate packages non-destructively, and belongs to the intersection field of non-destructive detection of narcotics and explosives and non-destructive detection of chemical materials. Background technique [0002] Drugs and explosives are important prevention and control items in the field of public security in my country. At present, the detection methods for drugs and explosives adopted by domestic and foreign security inspection and criminal investigation industries are mainly composed of infrared spectroscopy, X-rays, ultraviolet spectroscopy, mass spectroscopy and Raman spectroscopy and other instruments. For the above-mentioned detection methods, there are common disadvantages: sample preparation and processing are required, detection equipment is too large to be conducive to on-site detection, detection time is long, most instruments need to take samples to be te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65G01N21/01
CPCG01N21/01G01N21/65
Inventor 刘吉平韩佳
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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