Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and system for automatically positioning laser focusing position

A focus position and automatic positioning technology, applied in the detection field, can solve the problems of focus position positioning influence, high flatness requirements, slow adjustment speed, etc., and achieve the effect of strong versatility, simple equipment structure, and improved stability

Inactive Publication Date: 2022-04-12
HEFEI GOLD STAR MECHATRONICS TECH DEV CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent application publication number CN113740316A discloses a method and system for automatic positioning of the laser focus point based on the position of the spot. In this patent, the spatial coordinate geometric relationship between the laser focus point and the spot after placing the sample is used to obtain the The distance required to move the sample surface to the guide rail at the laser focus point. Two-dimensional coordinates are used in the spatial coordinate geometric relationship. According to the spatial geometric relationship, the sample needs to have good flatness in the two-dimensional direction, that is, the sample surface is required Flatness, the flatness of the sample to be tested is high; and the indicating laser is obliquely incident, and the slight deviation of the incident angle of the indicating laser will also have a great impact on the positioning of the focus position
[0004] When LIBS equipment is used to detect the composition of raw or compressed samples such as renewable metal recovery materials, mineral raw materials, high-temperature melt sampling materials, etc., due to the difference in thickness between the same batch or several batches of samples to be tested, the laser in the LIBS equipment will The relative distance between the focusing lens and the sample surface is inaccurate. If it is not adjusted in time, it will directly affect the stability and accuracy of the measurement results of LIBS equipment.
Traditional methods such as manual indicator light adjustment, sample surface imaging definition adjustment, and laser rangefinder adjustment are easily affected by sample characteristics such as surface granularity, surface gloss, sensitivity of equipment used, and proficiency in human operation. The adjustment speed is slow, which is not conducive to the rapid and automatic positioning of the laser focus position

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for automatically positioning laser focusing position
  • Method and system for automatically positioning laser focusing position
  • Method and system for automatically positioning laser focusing position

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] 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.

[0057] In an embodiment of the present invention, a laser focus position automatic positioning method, the method includes:

[0058] Adjust the relative distance between the laser focus mirror and the sample surface so that the laser focus point is on the sample surface, and record the focus position information corresponding ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention is suitable for the technical field of detection, and provides a laser focusing position automatic positioning method and system, the relative distance between a laser focusing lens and the surface of a sample is adjusted, a laser focusing point is located on the surface of the sample, and focusing position information corresponding to the laser focusing point at the moment is recorded; projecting a reference point light spot to the surface of the sample, and acquiring reference position information of the reference point light spot; according to the focusing position information and the reference position information, the height position of the sample platform is automatically adjusted, the reference position of the reference point light spot is moved to the focusing position corresponding to the laser focusing point, and sample surface component information on the same cross section as the reference point is detected. The method is suitable for fast and automatic positioning of the laser focusing position in the LIBS system when samples with different thicknesses are detected. The device is simple in structure and high in universality, laser pulses in an LIBS system can be quickly, accurately and automatically focused on the surface of a sample, and the stability of spectral signals and the reliability and accuracy of detection precision are improved.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to an automatic positioning method and system for a laser focus position. Background technique [0002] Laser-induced breakdown spectroscopy (LIBS) technology is an atomic emission spectroscopy technique. 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, it can be Qualitative and quantitative analysis of the elements contained in the sample. 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. Oil and gas resource exploration and other fields have become a research hotspot in the field of compositional analysis. [0003] Chinese patent application publication number CN113740...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71
Inventor 贾军伟潘从元张亮王战
Owner HEFEI GOLD STAR MECHATRONICS TECH DEV CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products