A Planar Arc Imaging and Spectrum Synchronous Acquisition Device

Abstract

The invention discloses a plane arc imaging and spectrum synchronous acquiring device. The device comprises a liftable worktable, a plane arc imaging system, a spectrometer, a high-speed camera, a trigger device and a computer; the plane arc imaging system, the spectrometer, the trigger device and the computer are all placed on the liftable worktable; through adjustment of the height and the position of the liftable worktable, after radiation generated by welding arcs enters the plane arc imaging system for light separation by the plane arc imaging system, one part of arc radiation enters thespectrometer, and the other part of arc radiation is acquired for imaging through the high-speed camera; and a signal output end of the trigger device is connected with external trigger interfaces ofthe plane arc imaging system and the spectrometer. The device reduces the damping influence of optical fiber transfer or optical imaging mirror sets on spectrum acquisition to the greatest extent whenthe acquiring precision and the resolution of the spectrometer are guaranteed, and realizes scanning of spectrum information in a whole arc plane within possibly shorter time.

Description

technical field [0001] The invention patent relates to the field of electronic measurement and control, in particular to a planar arc imaging and spectrum synchronous acquisition device. Background technique [0002] The spectrum of welding plasma contains rich information, so it is widely used in the research of welding mechanism and real-time monitoring of welding process. Analyzing the spectral information of welding plasma is an important way to study the physical characteristics of plasma in welding process. Realizing the collection of plasma spectrum in the welding process is particularly critical for the study of the welding process. [0003] During the welding process, the plasma is concentrated in a very small area between the electrode and the workpiece (arc welding) or above the keyhole (laser welding), which is also the main area where the welding mass and heat transfer processes occur. Therefore, the study of welding plasma requires us to obtain the spectral i...

AI Technical Summary

Problems solved by technology

However, the optical path system used in the experiment is very complex, and the plasma radiation is often seriously attenuated after being reflected by multiple mirror groups.

And because the optical path system platform in the experiment depends on the high-precision optical experiment platform and calibration system, it is greatly limited in the actual welding process research

[0007] To sum up, in the prior art, it takes a long time to acquire single-point optical fiber, and due to the fluctuation of the plasma during the welding process, the collected data has a large error

However, in the method of simultaneous acquisition with multiple optical fibers, the number of acquisition positions is limited by the number of optical fibers, and it is difficult to ensure that the transmission characteristics of each optical fiber are consistent

In addition, the optical path system used in the existing optical imaging method is very complex, and the radiation is often seriously attenuated after being reflected by multiple sets of mirror groups. , is greatly restricted in the study of the actual welding process

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