Coin screening system based on laser induced breakdown spectroscopy technology, and using method thereof

Abstract

The present invention discloses a coin screening system based on a laser induced breakdown spectroscopy technology. The system is characterized in that: a loading tray is a horizontally arranged circular structure, and a plurality of coin grooves are arranged on the upper surface of the loading tray; a drop channel is arranged on one side of the loading tray, the lower end of the drop channel extends directly above one of the coin grooves, and the upper end of the drop channel extends obliquely upward and communicates with the output end of a cleaning device; a lens is arranged directly aboveanother coin groove, and a mirror is obliquely arranged directly above the lens; the output end of a first laser is horizontally arranged toward the mirror, and the first laser light emitted by the first laser is reflected by the mirror on the lens and then focused on a discarded coin; and a digital delay generator is horizontally arranged on one side of the first laser, and the digital delay is connected with the first laser. According to the system provided by the present invention, by integrating the coin cleaning and the coin detection and replacement, frequent replacement of discarded coins is avoided, and the efficiency and accuracy of the coin detection are improved.

Description

technical field [0001] The invention relates to the technical field of coin detection, in particular to a coin identification system and a use method based on laser-induced breakdown spectroscopy technology. Background technique [0002] In recent years, due to the rapid development of online payment, common payment methods, such as coins or banknotes, have been rapidly and massively eliminated; among them, the recycling of coins has become the primary issue. Different coins have different metal components, and they should be recycled separately for different metal components. Due to long-term oxidation, environmental corrosion and other pollution, it is difficult to identify discarded coins in the usual way. [0003] At present, in the LIBS experiment, the ordinary LIBS instrument needs to replace the sample after each discarded coin experiment, and then put another sample on it. This process not only wastes time, but also may cause the laser to fail. It hits the sample ve...

AI Technical Summary

Problems solved by technology

Different coins have different metal components, and they should be recycled separately for different metal components. Due to long-term oxidation, environmental corrosion and other pollution, it is difficult to identify discarded coins in the usual way.

[0003] At present, in the LIBS experiment, the ordinary LIBS instrument needs to replace the sample after each discarded coin experiment, and then put another sample on it. This process not only wastes time, but also may cause the laser to fail. It hits the sample very well, thus affecting the spectral lines displayed on the computer side

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