Weld joint real time monitoring method of electric welding machine

Abstract

The invention relates to a real-time weld seam monitoring method for an electric welding machine. The method comprises the following steps: (1) a Hall current sensor converts a welding current into a corresponding voltage signal; (2) a DSP controller acquires the signal which is filtered, and finishes A / D conversion of an analogue signal, then outputs the analogue signal in two paths, one path of the signal is operated by a scheduled algorithm in an event manager module to obtain an output control signal which is used for controlling an actuator to correct an error, and the other path of the signal is sent to a PC through a serial communication module of the DSP; and (3) the PC is taken as an upper computer to perform various data processing, data storage and graphical display of the welding current, thus achieving real-time monitoring of the running state during the whole welding procedure. The real-time weld seam monitoring method can help realize real-time sampling and high-speed transmission of the welding current, and has better real-time characteristic and high control precision.

Description

technical field [0001] The present invention relates to the technical field of a real-time monitoring method, in particular to the technical field of a real-time monitoring method for a welding seam position, in particular to a real-time monitoring method for a welding seam of an electric welding machine. Background technique [0002] In the automatic welding process, the traditional seam tracking mechanism can only correct the deviation according to the predetermined tracking speed and accuracy. Due to the many interference factors in the welding process, the set parameters often cannot meet the tracking requirements of the entire welding process, which affects the deviation correction effect. Therefore, it is necessary to transmit the collected arc signal to the PC through the serial port for data processing and graphic display. When the external environment changes, the tracking parameters can be optimized in real time according to the arc signal waveform reflected on the...

AI Technical Summary

Problems solved by technology

[0003] With the continuous improvement of automatic welding quality requirements, the traditional arc sensor system with single-chip microcomputer as the core, due to the limitation of its main frequency and peripheral resources, when further improving the sampling accuracy, high-speed transmission of large amounts of data and multi-task parallel processing, The system will appear to be unstable or even unable to operate normally

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