A kind of program-controlled trigger and its triggering method

Abstract

The invention relates to a programmable trigger and a triggering method thereof. The programmable trigger includes a current sensor, an impedance matching circuit, a gain amplifier, an analog-to-digital converter, an FPGA processor and a buffer. The current sensor, the impedance matching circuit, the gain amplifier, the analog-to-digital converter, the FPGA processor and the buffer coordinate to work and trigger a camera device to take pictures in time. Compared with the prior art, the trigger can effectively generate a trigger signal when short-circuited, transmit the trigger signal to the external camera device, and trigger the camera device to take pictures, so that the pictures taken by the camera are clear and legible; meanwhile, the amplification amount of the gain amplifier can be programmed to adapt to different welding environments.

Description

technical field [0001] The invention relates to the technical field of arc welding, in particular to a program-controlled trigger applied to an electric welding machine to capture instant snapshots of electric welding and a triggering method thereof. Background technique [0002] At present, in the known arc welding monitoring system, it is necessary to take pictures or video display of the droplet image in the arc welding process, so as to facilitate quality control; and in the welding process, due to the existence of the splash phenomenon caused by the arc and the droplet necking , sometimes the image taken is blurred. In order to make the image taken by the camera clear and recognizable, the droplet image needs to be taken when the short circuit occurs, and then displayed, such as figure 1 Shown is a short-circuit transition welding process diagram; but the prior art does not have a technical solution for taking pictures during short-circuit. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the known arc welding monitoring system, it is necessary to take pictures or video display of the droplet image during the arc welding process, so as to facilitate quality control; and in the welding process, due to the existence of the splash phenomenon caused by the arc and the droplet necking , sometimes the image taken is blurred. In order to make the image taken by the camera clear and recognizable, the droplet image needs to be taken during short circuit and then displayed, such as figure 1 Shown is a short-circuit transition welding process diagram; but the prior art does not have a technical solution for taking pictures when short-circuiting

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