Pulse xenon lamp power detection circuit and method for laser welding system

Abstract

The invention discloses a laser welding system pulse xenon lamp power detection circuit and a method thereof. The real-time monitoring of the use condition and the aging degree of the pulse xenon lamp can be realized, and the photoelectric conversion efficiency of the laser welding machine can be known, and therefore the risks of the crystal explosion caused by the aging of the pulse xenon lamp, or the fogging and the water leakage of the crystal of the laser device can be reduced, and at the same time, the stability of the laser control system can be improved.

Description

technical field [0001] The invention relates to a xenon lamp power detection method, in particular to a pulsed xenon lamp electric power detection circuit and its detection method applied to a laser welding system. Background technique [0002] Since the laser welding equipment is working, there will be a large pulse current through the pulsed xenon lamp, and after the pulsed xenon lamp (pump source) is used for a period of time, the electrodes will appear black, cracked and other phenomena. This black lamp tube The wall will absorb more discharge radiation energy, so that the local heat of the lamp tube will rise. When the heat rises to a certain level, the metal electrode and the quartz glass tube will be fused together, and cracks will form as the temperature cools down. burst. In this case, its electro-optical conversion efficiency will be greatly reduced, and the working conditions will also become unstable. In domestic laser welding equipment, there is no good way to...

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Problems solved by technology

In domestic laser welding equipment, there is no good detection method for the early failure and service life of the pulsed xenon lamp. It can only be checked and maintained manually. In severe cases, the two end faces of the expensive crystal in the solid-state laser leak due to the failure of the sealing ring. Or because the temperature difference between room temperature and cooling water is too large, it is impossible to know when there is fogging and the surface of the crystal is polluted by cooling water and fouling, resulting in expensive crystal bursting and scrapping directly.

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