Efficient multipath laser probe analysis system and method

A multi-channel laser and laser beam technology, applied in the field of spectral analysis and online component detection, can solve the problems of high cost, poor anti-interference, slow detection speed, etc. strong effect

CN105527274AActive Publication Date: 2016-04-27HUAZHONG UNIV OF SCI & TECH
14 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-04-27

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an efficient multipath laser probe detecting system and method. The detecting system can divide laser sources into multiple paths and transmit the laser sources to multiple to-be-detected points through optical fibers, corresponding spectral signals are transmitted back to the detecting system after laser plasma is generated through excitation, finally, multi-point and simultaneous on-line detection by one laser probe instrument is finally realized, the optical fibers are used for transmitting laser and the spectral signals, accordingly, the anti-jamming capability of a laser probe in the severe environment can be improved, and the application cost of the laser probe instrument can be substantially reduced. The efficient multipath laser probe detecting system is particularly suitable for a large industrial process containing multiple production lines, has the on-line monitoring capability for multiple elements of a product on the production lines and facilitates popularization and generalization of a laser probe technology, and the application cost of the laser probe instrument can be substantially reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the field of spectral analysis and on-line composition detection, in particular to a multi-channel laser probe analysis system and method, which is especially suitable for multi-point simultaneous online detection in mines and large-scale industrial processes, which can significantly reduce costs and improve detection efficiency , has broad application prospects and markets. Background technique

[0002] In recent years, a new material component detection technology - laser probe technology, also known as laser-induced breakdown spectroscopy (Laser-Induced Breakdown Spectroscopy, LIBS) technology has aroused great interest of researchers. Compared with traditional chemical analysis methods, laser probe technology not only has the advantages of simultaneous detection of multiple elements, fast detection speed, real-time on-line detection, small sample damage and simple pretreatment, but also can detect gases, liquids, so...

Examples

example

[0052] by figure 1 The present invention is illustrated by taking the laser probe system with the structure shown in the iron ore mining and on-line detection of ore components during processing as an example. Through field investigation, it is found that the iron ore mining and processing process contains about 20 to 30 points that need to be determined for iron in the ore.

[0053]In this embodiment, Nd:YAG pulsed laser with a wavelength of 1064nm is used as the light source for ablation of ore. The single pulse energy of the laser is adjustable in the range of 0-800mJ, the pulse width is about 10ns, and the pulse repetition frequency is 20Hz. The wavelength analysis range of the grating spectrometer 5 used in this embodiment covers 200nm to 980nm, and is equipped with three gratings with different resolutions, and their grating lines are 300lines / mm, 1800lines / mm and 2400lines / mm respectively. The gate width of the ICCD detector 6 used in conjunction with the grating spect...