Control circuit of automatic dimming welding mask

A welding mask and control circuit technology, applied in eye masks, ophthalmic surgery, static indicators, etc., can solve the problems of sensitivity, lack of brightness adjustment, long response time, uneven quality, etc., to achieve convenient adjustment settings and improve production efficiency , Prevent the effect of electro-optic ophthalmia

Active Publication Date: 2022-02-22
江苏江翔光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the quality of products produced by domestic manufacturers is uneven. In addition to long response time, sensitivity and brightness adjustment are also relatively lacking. Therefore, domestic welding masks need to be further improved. Avoid damage to the eyes caused by strong welding light, and prevent the occurrence of electro-optic ophthalmia

Method used

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  • Control circuit of automatic dimming welding mask
  • Control circuit of automatic dimming welding mask
  • Control circuit of automatic dimming welding mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1, the power supply voltage stabilization circuit adopts a low-power linear voltage stabilization chip U5 to reduce the power consumption during voltage regulation; as shown in the figure, T+ and T- are respectively connected to the positive and negative poles of the solar cell. When there is light, the whole machine will enter the working state, further reducing the useless loss of battery power; the switch W1B adopts a resistance switch two-in-one potentiometer, and the switch of W1B can manually cut off the output of the voltage regulator chip.

Embodiment 2

[0075] Embodiment 2, the battery under-voltage warning circuit uses a dedicated low-voltage detection chip, and the low-voltage detection chip U7 uses a chip XC61CC2502MR. When the voltage supplied to the chip is insufficient, the LED will light up to remind the user to replace the battery.

Embodiment 3

[0076] Embodiment 3, the photoelectric conversion circuit is composed of infrared photodiodes, which convert the infrared light signal in the welding light into an electrical signal, so that the subsequent circuit can drive the LCD black screen in time according to this, and protect the welder's naked eyes from strong light.

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PUM

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Abstract

The invention discloses a control circuit for an automatic darkening welding mask, including a control circuit for providing an automatic darkening welding mask, and the control circuit includes: a power supply circuit, a photoelectric conversion circuit, a signal conditioning circuit, an LCD driving frequency and driving sequence circuit, and an LCD driving voltage Adjusting circuit, LCD driving circuit, positive and negative voltage conversion circuit, negative voltage doubler circuit. The present invention makes the driving voltage The higher the value, the darker the darkness, and at the same time, it is equipped with a very high pulse voltage for a short time to make the LCD respond quickly, so that the welder can avoid the damage to the eyes caused by strong welding light when operating, and prevent electro-optical eye damage. The occurrence of inflammation, the adjustment and setting are convenient, and the production efficiency is further improved.

Description

technical field [0001] The invention relates to the technical field of welding masks, in particular to a control circuit of an automatic darkening welding mask. Background technique [0002] An extremely important parameter of an automatic darkening welding mask is the response time, which is specifically defined as the time from when the mask photoreceptor captures the welding light to driving the LCD screen to dim. This time parameter directly determines the comfort of the welder's eyes and the degree of damage to the human face and eyes caused by harmful light. At present, the quality of products produced by domestic manufacturers is uneven. In addition to long response time, sensitivity and brightness adjustment are also relatively lacking. Therefore, domestic welding masks need to be further improved. Avoid damage to the eyes caused by strong welding light, and prevent the occurrence of electro-optic ophthalmia. Contents of the invention [0003] The present inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F9/06G09G3/36
CPCA61F9/065G09G3/36
Inventor 成江
Owner 江苏江翔光电科技有限公司
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