Thermocouple welding joint defects detection system based on computer vision

摘要

Due to the uncertainties of manual operation, it is difficult to ensure that each joint is available for the welded joint of thethermocouple wire. The size of the thermocouple connector is also small, and it is difficult to distinguish the defect of theconnector only by the human eye.This paper proposes a method of computer vision, using the camera to automatically identify defects in the thermocoupleconnector. Use the Candy edge detection algorithm to find the region of interest, and calculate the parameters such as thediameter of the welding joint through functions such as HoughCircles transform algorithm. Finally, the defects of thewelding joint are determined according to such parameters.In this paper, the thermocouple welding joint defect detection algorithm is used to realize the automatic detection ofthermocouple welding joint defect. It improves the quality of thermocouple welding joint, and the efficiency of the testpersonnel is also improved.