High-speed and high-precision laser location sensor, laser location sensor FD-QF High-speed location by laser Using a 2D laser, the groove section shape can be detected quickly without robot action. The detection time is less than 1/5 of the welding wire contact sensor. High-speed, high-precision location, thin plate further improve the applicability of environmental performance, can be applied to thick plate high-precision location. The welding conditions are adjusted automatically according to