Metal component detection method and device based on spectrum analysis technology

Abstract

The invention relates to a metal component detection method and device based on a spectrum analysis technology. The metal component detection device comprises a sampling robot, blowing equipment, a pulse laser, spectrum detecting equipment, spectrum analysis equipment and control equipment, wherein the ultrashort pulse output end of the pulse laser is opposite to a sample chamber; the ultrashort pulse output end of the pulse laser is aligned with a spectrum collection lens group in the spectrum detecting equipment; the air outlet of the blowing equipment is aligned with the sample chamber; the sample chamber comprises a tray and a transparent outer cover above the tray; the sampling robot comprises a first mechanical arm and a second mechanical arm. Through the adoption of the method and device, non-contact metal component analysis is realized through laser, automation process is realized through the sampling robot, artificial participation is not required, ultrashort pulse laser is adopted, and the device has good spectral characteristic, and is simple in structure, convenient to apply and suitable for large-scale promotion and application.

Description

technical field [0001] The invention relates to the technical field of metal detection, in particular to the technical field of metal component detection, in particular to a metal component detection method and device based on spectral analysis technology. Background technique [0002] With the development of society, various metals are used more and more widely. The analysis of different components of metals has always been a hot issue in social research. In the prior art, although various methods are used to analyze metal components, it is generally necessary to conduct a contact test with the metal, or to chemically react the metal with other substances. The use of contact testing will cause inconvenient testing, and the operation requires manpower, which is very time-consuming and laborious; the method of chemical reaction with other substances will cause damage to the metal sample, which is not suitable for occasions where metal samples need to be preserved. Therefore...

AI Technical Summary

Problems solved by technology

Mode-locked laser technology is the most common technology for obtaining ultrashort pulse laser output. It locks the longitudinal mode with a fixed phase relationship in the laser cavity to obtain ultrashort pulse output in terms of intensity, and can obtain extremely narrow pulse width. However, the repetition frequency of the laser pulse output in this way cannot be easily changed, and the mode-locking requires relatively harsh environmental conditions. Temperature changes and vibrations will affect the output of the mode-locked laser pulse.

Gain-switched semiconductor laser technology is to modulate the semiconductor laser with electrical pulses, and select the first peak of the relaxation oscillation of the semiconductor laser to obtain ultrashort pulse output. This technology can obtain ultrashort pulse output with adjustable repetition rate. However, the pulse width of the output laser pulse is wide and the power is very low

The laser intensity modulation technology uses a high-speed intensity modulator to modulate the intensity of the continuously output laser to obtain an ultrashort pulse output. The laser pulse repetition frequency obtained by this technology is adjustable, but the pulse width is wider and the output power is lower.

It can be seen that the above three existing technologies cannot simultaneously realize ultrashort pulse laser output with arbitrarily adjustable repetition frequency, high power, and high stability.

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