Dust component detection device and method based on spark-induced breakdown spectroscopy

Abstract

The invention discloses a dust component detection device and method based on electric spark induced breakdown spectrum, which comprises a dust collector, a micro-controller, a high-voltage pulse generator, a spectrometer, and a filtration recovery unit. The operating principle of the device is to control the internal components of the dust collector to collect dust particles through the microcontroller, and then use the stepping motor to turn the internal collection plate 180° and form the positive and negative electrodes with the lower anode needle; under the control of the microcontroller, the high voltage The pulse generator performs electric spark-induced breakdown on the dust particles on the collecting plate, and at the same time, the spectrometer collects the emission spectrum signal and data during the spark-induced breakdown process through the optical fiber probe; the discharged dust-containing air is sucked by the vacuum pump Enter the filter recovery unit; after the spectral data collected by the spectrometer is analyzed and processed by the analysis software, the composition and concentration of the detected particles can be further obtained, so as to realize the real-time online detection of dust composition and concentration.

Description

technical field [0001] The invention relates to a dust component detection device and method based on electric spark induced breakdown spectrum, and belongs to the technical field of air detection equipment. Background technique [0002] In recent years, the level of modern industrialization in our country has been continuously improved. While improving and enriching the living standards of our people, it has also brought about problems such as occupational diseases of workers caused by industrial dust, such as pneumoconiosis. The concentration of suspended particulates produced in industrial sites is usually used as one of the important indicators of the severity of pollution in production sites. However, the volume and types of dust are increasing and multiplying, and the harmful particles in it can pose serious health risks to those who are regularly exposed in industrial workplaces. According to relevant statistics, in the coal mine industry alone, pneumoconiosis caused...

AI Technical Summary

Problems solved by technology

However, these methods, such as the sampling and weighing method, can only provide the time-averaged concentration, the charge induction method relies on the electrostatic characteristics of the dust, and the light scattering method is greatly affected by the particle size of the dust particles, so it cannot accurately obtain the transient events and dynamics of the aerosol. feature

In addition, the measurement results obtained by the method of continuous monitoring in fixed places lack real-time and integrity, and their value in pollution prevention and occupational safety process control is very limited

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