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Online detection device and method based on LIBS technology

A detection device and detection method technology, applied in the field of LIBS, can solve the problems of expensive high-power lasers, difficulty in adapting to online detection, long measurement response time, etc., and achieve the effects of improving detection accuracy, low cost, and small signal fluctuations

Pending Publication Date: 2021-12-03
FOCUSED PHOTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-power lasers are not only expensive and bulky, but also generate high heat, which makes it difficult to adapt to the harsh environment of online detection
[0004] 2. During online measurement, due to the ups and downs on the surface of the measured mineral, the spectral collection optical system is often placed far away from the measured object, and the measured spectral energy is collected through a large-aperture optical system. The collection efficiency is low and the signal is weak.
[0005] 3. During online measurement, the excitation energy is unstable and the signal fluctuates greatly, requiring a large amount of measurement data for long-term averaging to suppress noise, resulting in long measurement response time

Method used

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  • Online detection device and method based on LIBS technology
  • Online detection device and method based on LIBS technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 A schematic structural diagram of an online detection device based on LIBS technology in an embodiment of the present invention is given, as figure 1 Shown, described online detection device based on LIBS technology comprises:

[0031] LIBS detection unit 61, the LIBS detection unit 61 includes a laser, a light emitting module, a light receiving module and an analysis module;

[0032] a separation unit 21, the separation unit 21 is used to separate the object to be tested on the conveyor belt 10, so that the object to be tested on the conveyor belt 10 advances along the left and right sides of the separation unit 21;

[0033] a fixing unit for fixing the separation unit on the upper side of the conveyor belt;

[0034] An optical window 31, the optical window 31 is arranged on the left side and / or right side wall of the separation unit 21, and is suitable for passing through the outgoing light of the LIBS detection unit 61 and the excitation light on the objec...

Embodiment 2

[0045] An application example of the online detection device and method based on LIBS technology according to Embodiment 1 of the present invention.

[0046] In this application example, if figure 1 As shown, the separation unit 21 has a tip 22, and two inclined parts (inclined relative to the conveying direction of the conveyor belt) 23-24 from the inside to the outside; the optical window 31 adopts glass and is arranged on the inclined part 23; the fixing unit will separate The unit 21 is fixed on the upper side of the conveyor belt 10 , and there is a gap between the bottom side of the separating unit 21 and the conveyor belt 10 .

[0047] The online detection method based on LIBS technology in the embodiment of the present invention, that is, the working method of the online detection device in this embodiment, the online detection method based on LIBS technology is:

[0048] The object to be tested advances on the conveyor belt 10, and the fixed separation unit 21 separa...

Embodiment 3

[0051] According to the application example of the online detection device and method based on LIBS technology in Embodiment 1 of the present invention, it is different from Embodiment 2 but:

[0052] 1. Rollers are set on the bottom side of the separation unit, and the rollers touch and roll the conveyor belt;

[0053] 2. If figure 2 As shown, the separation unit also has parallel parts 51-52, and the parallel parts 51-52 are connected with the inclined parts 23-24, and are parallel to the advancing direction of the conveyor belt 10;

[0054] The optical window 31 is provided on the parallel portion 51 .

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Abstract

The invention provides an on-line detection device and method based on an LIBS technology. The on-line detection device based on the LIBS technology comprises an LIBS detection unit; the separation unit is used for separating a to-be-detected object on the conveying belt, so that the to-be-detected object on the conveying belt moves forwards along the left side and the right side of the separation unit; the fixing unit is used for fixing the separating unit on the upper side of the conveying belt; and the optical window is arranged on the left side wall and / or the right side wall of the separation unit and is suitable for transmitting emergent light of the LIBS detection unit and exciting light on the to-be-detected object. The method has the advantages of accurate detection and the like.

Description

technical field [0001] The invention relates to LIBS technology, in particular to an online detection device and method based on LIBS technology. Background technique [0002] Laser-induced breakdown spectroscopy is considered to be a very promising elemental analysis technique, especially in the realization of on-line elemental analysis, such as iron ore, limestone, coal, etc. However, there are many engineering and technical contradictions in the online analysis process of practice. [0003] 1. The surface of the mineral to be tested is undulating, and a high-power laser beam is required to excite the material to be tested even when the focused spot size changes in a large range. However, high-power lasers are not only expensive and bulky, but also generate high heat, which makes it difficult to adapt to the harsh environment of online detection. [0004] 2. During online measurement, due to the ups and downs of the surface of the measured mineral, the spectral collectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71
CPCG01N21/718
Inventor 俞大海
Owner FOCUSED PHOTONICS
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