The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2025
Filed:
Jun. 05, 2025
Harbin Welding Institute Limited Company, Heilongjiang, CN;
Fujia Xu, Heilongjiang, CN;
Ruolong Qiu, Heilongjiang, CN;
Yicheng Yang, Heilongjiang, CN;
Rong Li, Heilongjiang, CN;
Hongwei Li, Heilongjiang, CN;
Yandong Zhang, Heilongjiang, CN;
Nannan He, Heilongjiang, CN;
Bao Jiang, Heilongjiang, CN;
Lin Li, Heilongjiang, CN;
Harbin Welding Institute Limited Company, Harbin, CN;
Abstract
There is provided a welding wire remaining amount detection and warning system which relates to the welding field. The present disclosure aims to solve the problem of inability to detect the welding wire remaining amount in the laser composite welding makeup device. In the present disclosure, in the welding wire remaining amount detection process, based on electromagnetic induction principle, the equivalent inductance of the coil decreases along with decrease of the welding wire. The change of the equivalent inductance of the coil is converted by the LC oscillator circuit into a directly-collectable frequency change signal. By detecting the value of the current frequency, the current welding wire remaining amount can be determined.