Industrial camera for electric welding monitoring

Abstract

The invention relates to an industrial camera for electric welding monitoring. The camera includes a camera, a welding gun and an electric welding machine, the electric welding machine is connected with a weldment and the welding gun through cables; the industrial camera is provided with a plurality of groups of optical filters with different concentrations; the optical filters are arranged in thecircumferential direction of the outer edge of the optical filter disc; the camera can shoot an electric welding position through the optical filter; the optical filter disc can rotate and is switched into an optical filter for filtering of the camera; the industrial camera further comprises a non-contact electric meter which is used for detecting electrical parameters on a cable, the non-contactelectric meter, the optical filter disc and the camera are all electrically connected with the control box, and the control box correspondingly controls movement of the optical filter disc accordingto read data detected by the non-contact electric meter. According to the scheme, a brightness sensor is replaced by detection of electrical parameters of the electric welding cable, the influence ofenvironmental factors such as a camera shooting angle on strong light inhibition is overcome, and meanwhile, an accessed optical filter is accurately switched by adopting an optical filter disc system, so that the brightness of a picture is always approximately consistent no matter whether strong light exists or not.

Description

technical field [0001] The present application relates to industrial security and monitoring equipment, in particular to an industrial camera for electric welding monitoring. Background technique [0002] In the welding process of mechanical manufacturing, strong and unstable arc light will be generated at the welding position. For analysis or safety purposes, it is necessary to photograph the welding location and, when not welding, to photograph the working conditions of the welding crew. Among the prior art, the light-sensing range of the camera is very small (only a part of the daily light range), beyond this range, it is necessary to use a supplementary light or a black film to reduce the luminosity. However, the luminosity range of the arc light during the electric welding process is too large and too fast, and there are still certain problems in the suppression of strong light. [0003] Some strong light suppression methods for electric welding have appeared in the p...

AI Technical Summary

Problems solved by technology

[0008] This type of method adds an electronically controlled liquid crystal filter to the camera lens, and switches the light transmittance of the liquid crystal according to the light value measured by the optical sensor, so as to achieve the effect of shooting non-welding and welding arcs at the same time, but the problem is that the liquid crystal dimming mirror There is a threshold value for the minimum light transmittance, that is, its filtering range has an upper limit, and it can only be switched among a few discrete light transmittances, while the welding arc intensity changes continuously, and the captured images are divided into different light and dark Several sections, still need some post-processing

However, during the welding process, the position of the solder joint is constantly changing, and the angle of the brightness sensor is constantly changing, so that the detection value is in a dynamic error, and it is not easy to achieve the ideal strong light suppression.

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