针对铝合金焊丝表面缺陷检测效率低、精度差、检测结果滞后的问题,提出基于涡流技术的在线检测方法。研究检测技术应用工艺、检测系统硬件设计,应用极限平均思想减小检测误差关键算法,最终实现在线检测功能。实验结果表明:该技术可以快速有效地检测出焊丝表面缺陷,并可推广应用到其他金属线材表面缺陷检测。 Aiming at the problem of low efficiency, poor accuracy and lagging of test results of aluminum alloy wire surface defects detection, an on-line detection method based on eddy current technology is proposed. Research on the application of detection technology, detection system hardware design, the application of limit average thinking to reduce the key error detection algorithm, and ultimately achieve online detection. The experimental results show that this technique can detect the surface defects of wire quickly and effectively and can be applied to the detection of surface defects of other metal wires.