Dazzle prevention device having electromagnetic wave detection function

Abstract

A dazzle prevention device having an electromagnetic wave detection function is disclosed. The device includes an optical detection means, an electromagnetic wave sensor means, the electromagnetic wave detection means, a control means, and a light transmission control means. The optical detection means detects light generated from the welding or cutting torch. The electromagnetic wave sensor means detects an electromagnetic wave. The electromagnetic wave detection means compares a signal, which is input through the electromagnetic wave sensor means and resonated, with a variably set reference value. The control means applies the electromagnetic wave detection mean drive signal to the electromagnetic wave detection means and monitors the variation of an electromagnetic signal using the output of the electromagnetic wave detection means. The light transmission control means controls the variation of light transmittance of the dazzle prevention plate in response to an output signal from the control means.

Description

technical field [0001] The present invention generally relates to an anti-glare device with an electromagnetic wave detection function, and more particularly, to an anti-dazzle device with an electromagnetic wave detection function, which detects electromagnetic waves generated with high-illuminance light during welding or cutting, and protects The operator's eyes are protected from strong light. Background technique [0002] Generally, in order to control the transmittance of light generated by a welding or cutting torch, an anti-glare device worn on the head by the operator and equipped with a light detection unit has been used. [0003] figure 1 is a perspective view showing a protective mask 1 equipped with a conventional anti-glare device 2 . [0004] Such as figure 1 As shown, the protective mask 1 with the anti-glare device at the front of the protective mask 1 reduces the exposure to the operator through an anti-glare plate 5 that is a liquid crystal display (LCD)...

AI Technical Summary

Problems solved by technology

[0017] However, the conventional anti-glare device equipped with an electromagnetic wave detection unit has a disadvantage in that it is set to use the electromagnetic wave detection method regardless of environmental conditions, so in an environment where many electromagnetic waves are generated, Electromagnetic waves instead of the operator's torch or cutting torch are at work. The light transmission of the anti-glare plate is unnecessarily reduced, which disturbs the operator's precise operation

[0018] Furthermore, in the conventional anti-glare device equipped with an electromagnetic wave detection unit, the electromagnetic wave detection sensitivity is fixed, so electromagnetic waves generated by sources other than the operator's machine, such as by other operator's machines Generated electromagnetic waves, which can also be detected, can lead to erroneous operation

[0019] Furthermore, the disadvantage of the traditional anti-dazzle device equipped with the electromagnetic wave detection unit is that although the operator must accurately identify the welding or cutting area before starting work, the welding or cutting machine must be energized or turned on. The electromagnetic wave is generated before the light is generated when the switch is cut, because the light detecting unit and the electromagnetic wave detecting unit are constructed to operate independently, so even if no light is generated, based on the detected electromagnetic wave, the light transmittance can also be lowered, which prevents the operator from performing work after identifying the exact welding or cutting area

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