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Laser focus point position automatic positioning method and system based on light spot area

A technology of spot area and automatic positioning, which is applied in the field of spectral detection and analysis, and can solve problems such as large influence of sensitivity

Pending Publication Date: 2021-12-03
HEFEI GOLD STAR MECHATRONICS TECH DEV CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The adjustment accuracy of these adjustment methods is greatly affected by the surface characteristics of the sample, such as flatness, reflectivity, and the sensitivity of the equipment used.

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  • Laser focus point position automatic positioning method and system based on light spot area
  • Laser focus point position automatic positioning method and system based on light spot area

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Embodiment Construction

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] The embodiment of the present invention aims at the fact that the existing laser-induced breakdown spectroscopy technology cannot realize the rapid and automatic positioning of the laser pulse focus point, and the manual focusing speed is slow and the precision is low. Different focal point positions affect the detectio...

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Abstract

The invention provides a laser focus point position automatic positioning method and system based on a light spot area, and the method comprises the steps: determining a reference light spot area which is the light spot area of indication light at the focus point position of a focusing lens; after a sample is placed on a three-dimensional moving platform, adjusting the relative distance between the sample and the focusing lens, and obtaining the light spot areas of multiple pieces of indicating light when the sample is located at different positions as multiple first alternative light spot areas; determining a first light spot area closest to the reference light spot area in the plurality of first alternative light spot areas; and determining a first sample position corresponding to the first light spot area according to the first light spot area, and taking the first sample position as an automatic positioning result. According to the positioning method and system, the accurate positioning of the LIBS system can be achieved based on the light spot area, the light spot area is high in reference performance, and errors are low.

Description

technical field [0001] The invention belongs to the technical field of spectrum detection and analysis, and in particular relates to an automatic positioning method and system for laser focus point positions based on spot area. Background technique [0002] Laser-induced breakdown spectroscopy (LIBS) technology is a kind of atomic emission spectroscopy technology. By focusing high-energy pulsed laser on the surface of the sample, ablation excites the sample to generate plasma, and then according to the collected plasma spectrum, The elements contained in the sample can be qualitatively and quantitatively analyzed. This technology has the advantages of no need for complicated sample pretreatment, strong adaptability to the environment, rapid analysis of multiple elements at the same time, remote analysis, and in-situ online real-time analysis. It is widely used in space exploration, industrial production, environmental monitoring, and resources. Exploration and other fields ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71G01N21/01G01B11/00
CPCG01N21/718G01N21/01G01B11/00G01N2021/0112
Inventor 贾军伟潘从元张兵张亮
Owner HEFEI GOLD STAR MECHATRONICS TECH DEV CO LTD