Auto-darkening welding filter capable of automatically setting shade number

Abstract

The invention discloses an auto-darkening welding filter capable of automatically setting a shade number, comprising a liquid crystal lens group, light sensitive tubes, a trigger circuit and a singlechip. Two groups of light sensitive tubes are provided, one group includes infrared light sensitive tubes and the other group includes green light sensitive tubes, wherein, the infrared light sensitive tubes are used for detecting welding arc light and controlling the work of the singlechip through the trigger circuit; the green light sensitive tubes are used for detecting green light signals in the welding arc light and transmitting the detected signal to a matched light intensity processing circuit; the detected signal is processed into a light intensity signal by the light intensity processing circuit and is then transmitted to the singlechip; and the singlechip automatically controls the darkening of the liquid crystal lens group according to the green light intensity value. The filterovercomes the problem of damage to the users by the existing darkening welding filter owning to using complexity and easy misoperation.

Description

technical field [0001] The invention relates to a dimming welding filter mirror with a shading number automatically set according to the actual light intensity of the welding arc. Background technique [0002] Before using the existing dimming welding filter, the operator needs to manually set the dimming filter according to the type of welding to be performed and the size of the current to be used referring to Table 3 in "Welding Goggles and Masks GB 3609.1-83" Whenever the operator reselects the welding type or changes the current used, he needs to take off the helmet and set the value of the shading number after the filter is changed again, which not only imposes a burden on the operator's work It is inconvenient and virtually increases a lot of man-hours, especially some operators forget to re-modify the settings before performing new welding operations, which hurts the eyes. Contents of the invention [0003] In view of the problems existing in the prior art, the pur...

AI Technical Summary

Problems solved by technology

[0002] Before using the existing dimming welding filter, the operator needs to manually set the dimming filter according to the type of welding to be performed and the size of the current to be used referring to Table 3 in "Welding Goggles and Masks GB 3609.1-83" Whenever the operator reselects the welding type or changes the current used, he needs to take off the helmet and set the value of the shading number after the filter is changed again, which not only imposes a burden on the operator's work. It is inconvenient and virtually increases a lot of man-hours, especially some operators forget to re-modify the settings before performing a new welding operation, which hurts the eyes

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