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

Abstract

The invention discloses a dust component detection device and method based on an electric spark induced breakdown spectroscopy. The dust component detection device comprises a dust collector, a micro-controller, a high-voltage pulse generator, a spectrograph and a filtering and recycling unit. The operation principle of the device is that the micro-controller controls an internal element of the dust collector to collect dust particles, and then a stepping motor enables an internal collection flat plate to turn over by 180 degrees to form positive and negative electrodes with a lower anode needle; under the control of the micro-controller, the high-voltage pulse generator carries out electric spark induced breakdown on the dust particles on a collecting plate, and meanwhile, a spectrograph collects emission spectrum signals and data in the electric spark induced breakdown process through an optical fiber probe; the discharged dust-containing air is sucked into the filtering and recycling unit through a vacuum pump; and after the spectrum data collected by the spectrograph is analyzed and processed by analysis software, the components and the concentration of the detected particulate matters can be further obtained. Therefore, real-time online detection of the components and the concentration of the dust is realized.

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...

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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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