Industrial camera for inhibiting strong electric welding light

Abstract

The invention relates to an industrial camera for inhibiting strong electric welding light. The camera including a camera, an filter disc which is arranged at the front end of the camera, a control box and a camera mounting bracket, wherein a plurality of optical filters with different concentrations are arranged on the optical filter disc, the optical filters are arranged in the circumferential direction of the outer edge of the optical filter disc, the optical filters coincide with or are parallel to a lens optical path of the camera, the camera can shoot an image during electric welding through the optical filters, the optical filter disc can rotate, and only one optical filter coincides with the lens optical path of the camera at any moment; the control box measures the current generated when the electric welding equipment works, and controls the filter disc to rotate in real time according to the current intensity, so that the optical filter with the proper concentration shields the lens of the camera; and the camera mounting bracket is used for adjusting the front-back position of the camera. According to the scheme, the brightness sensor is replaced by the detection of the electrical parameters of the electric welding cable, and meanwhile, the connected optical filters are accurately switched by adopting the optical filter disc system, so that the brightness of the picture is always approximately consistent no matter whether strong light exists or not.

Description

technical field [0001] The present application relates to an industrial security and monitoring equipment, in particular to an industrial camera for suppressing strong light from electric welding. 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 ...

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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