With the rapid development of welding technology

it is more and more important for the detection of its welding process. As is known to all

besides welding power source

automatic and semi-automatic welding qualities are also affected by the reliability and stability of wire-feeding system directly. The design of speed measurement based Hall speed sensor has realized the real-time display and storage of wire-feeding speed. Analyzed the principle of speed measurement

use the Hall sensor which has the fast response and high measurement precision

combineding with the SCM circuit

a new speed measurement system was designed. Therefore

this study designs a upper computer software based on Lab VIEW. The system has the advantages of low cost

high reliability

fast speed and wide measuring range.