Desenvolvimento de um sistema open source de aquisição dos parâmetros de soldagem para fins acadêmicos e com baixo custo.

Abstract

The welding process is widely used in various applications and sectors. To ensure the quality, safety and efficiency of this process, it is essential to monitor voltage, current and thermal cycle settings. This need for monitoring also extends to academia, where it is often necessary to collect this data to prepare articles, research and academic work, especially in mechanical engineering courses, such as Welding Technology. This project’s general objective is to develop an open source system for acquiring welding parameters for academic and low-cost purposes, being developed completely from the hardware to the equipment software where the system is capable of recording and presenting in real time the current, voltage and temperature parameters during the welding process and validated using an analysis comparative data from a data acquisition system as a reference, SAP V4. To validate the proposed system, the methodology of comparing the developed system with a reference system, SAP V4, was adopted. All system sensors were calibrated, and the comparison of the relative error of the proposed system values was conducted using reference instruments. After calibration was completed, the system was validated through statistical analysis, considering means, standard deviations and coefficients of variation. This data was obtained by comparing the values recorded by the two systems when acquiring data from 10 weld beads, where the process was monitored simultaneously by both systems. After complete development of the system, efficient operation was observed when recording and presenting parameters in real time. Calibration of the sensors demonstrated minimal relative errors compared to reference instruments, and validation of the system using the reference system, SAP V4, proved satisfactory. All project objectives were fully achieved, thus consolidating a significant contribution to the advancement of knowledge in the area of welding. The project offers an affordable and reliable tool for collecting essential data, promoting a deeper understanding of the welding process. This achievement will not only benefit students, but will also provide professionals with the necessary tools to improve and optimize the welding process.