Explosive detection method based on colorimetric array technology

Abstract

The invention relates to an explosive detection method based on a colorimetric array technology, and a detector involved in the method is composed of a sampling module, an image acquisition module, an ARM board card, an FPGA board card, a liquid crystal display module, a lithium battery and a power switch.According to the method, an area causing turbulent flow is designed in a sampling cavity; the airflow carrying the crystal cluster particles can be kept in the cavity for a longer time, and finally, the micro-nano colorimetric sensing chip has a good effect of collecting the floating explosive crystal cluster particles, and the micro-nano colorimetric sensing chip integrates a plurality of independent areas based on a colorimetric array technology and has the capability of carrying out specific color reaction with floating explosive crystal cluster particles; the method has the characteristic of intelligently and chemically analyzing the types of various standard and non-standard explosives, can accurately report the names, components and the like of the explosives or the easy-to-explode raw materials, covers the explosives and the easy-to-explode raw materials in the detection range, and achieves trace detection of the explosives and the easy-to-explode raw materials.

Description

technical field [0001] The invention belongs to the field of explosive detection, and in particular relates to an intelligent chemical analysis technology and a detection method using an explosive atmosphere detector. Background technique [0002] Since Nobel invented safe explosives in the 1870s, explosives have played an extremely important role in the development of modern society, especially in the military, aerospace, infrastructure and some industrial fields. In recent years, with the expansion of the application range of explosives, the emergence of new types of explosives, and the invention of new explosives, explosives detectors are mostly used in various fields such as airports, railway stations, ports, and public places of government agencies. Currently, portable The methods for detecting explosives include Raman spectroscopy, fluorescence technology, ion mobility spectrometry, colorimetric technology, etc., all of which have certain limitations. [0003] Colorim...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of difficult detection of floating explosive crystal cluster particles in the air, and the cumbersome operation problem of multi-step detection by elimination method in colorimetric detection and the judgment problem caused by the visual difference existing in human judgment , the present invention provides a method for detecting explosives based on colorimetric array technology, the detector involved in the method is composed of a sampling module, an image acquisition module, an ARM board, an FPGA board, a liquid crystal display, a lithium battery, a power switch Composition; the core of the method is a micro-nano colorimetric sensor chip, based on the colorimetric array technology, the micro-nano colorimetric sensor chip integrates multiple independent areas with the ability to perform specific color reactions with floating explosive crystal cluster particles, and a specially designed vacuum pump Extract the floating explosive crystal cluster particles in the target site to the surface of the micro-nano colorimetric sensor chip, and realize the trace detection of explosives and explosive precursor raw materials through chemical colorimetry and machine vision; overcome the shortcomings of poor timeliness of sequential detection of reagents , and at the same time enhance the recognition accuracy, overcome the complex operation in structure, and realize the whole area detection with one key operation

Images