阅读说明：本技术 一种基于光敏调节工作参数的焊接面罩及其调节方法 (Welding mask based on photosensitive adjustment working parameters and adjustment method thereof ) 是由 黄上游 于 2021-09-08 设计创作，主要内容包括：本发明涉及一种基于光敏调节工作参数的焊接面罩,包括面罩本体和安装在所述面罩本体上的液晶屏、光敏元件和工作参数调节模块,所述面罩本体覆盖于用户的面部；所述液晶屏至少覆盖用户的眼睛部位,用于过滤入射光的强度；所述光敏元件朝向所述面罩本体外表面,用于采集光强信息,所述光强信息包括基于用户动作影响的环境亮度变化的第一信号；所述工作参数调节模块与所述光敏元件连接,用于获取第一信号,并根据第一信号调节焊接面罩的工作参数。本发明利用光敏元件进行采集用户动作的信号,用于调节工作参数,在需要频繁调节工作参数的场景下,能够简化操作步骤,提升焊接作业效率。(The invention relates to a welding mask based on photosensitive adjustment of working parameters, which comprises a mask body, a liquid crystal screen, a photosensitive element and a working parameter adjusting module, wherein the liquid crystal screen, the photosensitive element and the working parameter adjusting module are arranged on the mask body; the liquid crystal screen at least covers the eye part of the user and is used for filtering the intensity of incident light; the photosensitive element faces the outer surface of the mask body and is used for collecting light intensity information, and the light intensity information comprises a first signal based on the change of the ambient brightness influenced by the action of a user; the working parameter adjusting module is connected with the photosensitive element and used for acquiring a first signal and adjusting working parameters of the welding mask according to the first signal. The invention utilizes the photosensitive element to collect the signal of the user action for adjusting the working parameters, can simplify the operation steps and improve the welding operation efficiency under the scene that the working parameters need to be frequently adjusted.)

1. A welding mask based on photosensitive adjustment of working parameters comprises a mask body (1), a liquid crystal screen (2) arranged on the mask body (1), a photosensitive element (3) and a working parameter adjusting module (4),

the mask body (1) covers the face of a user;

the liquid crystal screen (2) at least covers the eye part of a user and is used for filtering the intensity of incident light;

the photosensitive element (3) faces the outer surface of the mask body (1) and is used for collecting light intensity information, and the light intensity information comprises a first signal based on the change of the ambient brightness influenced by the action of a user;

the working parameter adjusting module (4) is connected with the photosensitive element (3) and used for acquiring a first signal and adjusting the working parameters of the welding mask according to the first signal.

2. The welding mask according to claim 1, further comprising a light transmittance adjusting module (5) and an information judging module (6) mounted on the mask body (1),

the light intensity information further comprises a second signal generated based on a change in ambient brightness effected by the welding arc;

the information judgment module (6) is connected with the photosensitive element (3) and is used for acquiring the light intensity information and judging the light intensity information to be a second signal or a first signal;

the working parameter adjusting module (4) is connected with the information judging module (6) and is used for acquiring a first signal and adjusting the working parameters of the welding mask according to the first signal;

and the light transmittance adjusting module (5) is respectively connected with the liquid crystal screen (2) and the information judging module (6) and is used for acquiring a second signal and adjusting the light transmittance of the liquid crystal screen (2) according to the second signal.

3. The welding helmet of claim 1,

the user action is used as a shielding action, and when the light intensity is reduced to be below a preset value in preset time, the light intensity information is judged to be a first signal.

4. The welding helmet of claim 3, wherein the predetermined value is taken from 0.1-20 Lx.

5. The welding mask according to claim 3, further comprising, in the operating parameter adjustment module (4), setting the type and value of the adjustment parameter to which the first signal corresponds according to the duration of the shielding action.

6. The welding helmet of claim 1,

the user action is taken as a shaking action, and when the light intensity flickers for a preset number of times in preset time, the light intensity information is judged to be a first signal.

7. Welding mask according to claim 1, further comprising a base light source (7), the base light source (7) having an illumination range covering the light sensitive element (3) for providing an initial brightness for the light sensitive element (3).

8. Welding mask according to claim 1, further comprising a base light source (7), the base light source (7) having an illumination range covering the light sensitive element (3), and the base light source (7) employing a predetermined spectrum, distinct from welding arc light and natural light, for providing an initial brightness for the light sensitive element (3).

9. The welding helmet of claim 1, further comprising, a prompt module,

the prompt module is arranged inside the mask body (1) and used for reminding a user of the parameter adjusting state by adopting any one or the combination of light and voice.

10. A method for adjusting a welding mask based on photosensitive adjustment of working parameters comprises,

a first step of collecting light intensity information comprising a first signal based on ambient brightness variations influenced by user actions, using a light sensitive element (3) facing the outer surface of the mask body (1);

and secondly, acquiring a first signal by using a working parameter adjusting module (4) connected with the photosensitive element (3), and adjusting the working parameter of the welding mask according to the first signal.

Technical Field

The invention relates to the field of light-variable welding masks, in particular to a welding mask based on photosensitive adjustment of working parameters.

Background

Welding arcs are often generated in the metal welding process, and the light radiation brought by the welding arcs can damage the eyes of welders. Therefore, people adopt a welding mask for protection, wherein the automatic Darkening welding mask is provided with an automatic Darkening welding Filter (ADF) which has an automatic Darkening function, and the ADF can automatically and rapidly darken during arcing, thereby not only reducing the intensity of visible light, but also effectively blocking ultraviolet rays and infrared rays in arc light and preventing eyes from being burnt.

The conventional ADF generally comprises a mirror frame, a liquid crystal sheet arranged on the mirror frame, an arc sensor arranged outside the mirror frame and a driving circuit, wherein the arc sensor collects an optical signal penetrating through the liquid crystal sheet and feeds back the optical signal to the driving circuit, and the driving circuit controls the light transmittance of the liquid crystal sheet according to the optical signal. The ADF mainly realizes control of light transmittance by using a characteristic that an arrangement mode of liquid crystal molecules changes with the magnitude of an applied voltage of a driving circuit.

During welding operation, the working parameters of the welding mask need to be adjusted, and particularly when frequent switching of various working conditions is encountered, the working parameters need to be adjusted frequently.

However, when working parameters of the existing welding mask are adjusted, modes such as knob adjustment, key adjustment or touch screen adjustment are mainly adopted. These adjustment methods have a common disadvantage in that the adjustment is inconvenient. For example, since the adjusting knob, the key or the panel is disposed on the surface of the welding mask or inside the welding mask, it is difficult to accurately find the correct position for adjustment in the wearing state, and even sometimes the welding mask needs to be removed for adjustment, and even gloves need to be removed for operation, which seriously affects the working efficiency.

Therefore, it is urgently needed to provide a welding mask which can directly adjust working parameters in a wearing state.

Disclosure of Invention

In order to solve the problems, the invention provides a welding mask based on photosensitive adjustment of working parameters, which comprises a mask body, a liquid crystal screen, a photosensitive element and a working parameter adjustment module, wherein the liquid crystal screen, the photosensitive element and the working parameter adjustment module are arranged on the mask body; the liquid crystal screen at least covers the eye part of the user and is used for filtering the intensity of incident light; the photosensitive element faces the outer surface of the mask body and is used for collecting light intensity information, and the light intensity information comprises a first signal based on the change of the ambient brightness influenced by the action of a user; the working parameter adjusting module is connected with the photosensitive element and used for acquiring a first signal and adjusting working parameters of the welding mask according to the first signal.

According to one embodiment of the invention, the welding mask further comprises a light transmittance adjusting module and an information judging module which are arranged on the mask body, and the light intensity information further comprises a second signal generated based on the change of the ambient brightness influenced by the welding arc light; the information judgment module is connected with the photosensitive element and used for acquiring the light intensity information and judging the light intensity information to be a second signal or a first signal; the working parameter adjusting module is connected with the information judging module and used for acquiring a first signal and adjusting the working parameters of the welding mask according to the first signal; the light transmittance adjusting module is respectively connected with the liquid crystal screen and the information judging module and used for acquiring a second signal and adjusting the light transmittance of the liquid crystal screen according to the second signal.

According to one embodiment of the invention, the light sensitive element 3 comprises any one or a combination of a light sensitive sensor, a solar panel.

According to an embodiment of the present invention, the user action is a blocking action, and when the light intensity falls below a predetermined value within a predetermined time, the light intensity information is determined to be the first signal.

According to one embodiment of the invention, the predetermined value is 2 Lx.

According to an embodiment of the present invention, in the operating parameter adjusting module 4, the type and value of the adjusting parameter corresponding to the first signal are set according to the duration of the shielding action.

According to one embodiment of the present invention, the user action is a shaking action, and when the light intensity flickers for a predetermined number of times within a predetermined time, the light intensity information is determined to be the first signal.

According to one embodiment of the present invention, the welding mask further comprises a base light source 7, and the illumination range of the base light source 7 covers the light sensitive element 3 for providing the initial brightness for the light sensitive element 3.

According to one embodiment of the invention, the welding helmet further comprises a base light source 7, the illumination range of the base light source 7 covers the light sensitive element 3, and the base light source 7 adopts a predetermined spectrum different from welding arc and natural light for providing an initial brightness to the light sensitive element 3.

According to one embodiment of the present invention, the light sensitive element 3 comprises a main path element and a branch path element, the main path element is arranged in front of the mask body 1 and is used for collecting a second signal generated based on the ambient brightness change caused by the welding arc; the branch component is arranged on the side or the rear of the mask body 1 and used for collecting a first signal based on the change of the ambient brightness influenced by the action of a user.

According to one embodiment of the invention, the welding mask further comprises a prompting module, wherein the prompting module is arranged inside the mask body 1 and used for prompting the parameter adjusting state of a user by adopting any one or combination of light and voice.

According to another aspect of the present invention, there is provided a method for adjusting a welding helmet based on photosensitive adjustment of operating parameters, comprising a first step of collecting light intensity information including a second signal based on a change in ambient brightness due to the influence of a welding arc and a first signal based on a change in ambient brightness due to the influence of a user action, by using a photosensitive element 3 facing an outer surface of a helmet body 1; a second step of acquiring the light intensity information by using an information judgment module 6 connected with the photosensitive element 3 and judging the light intensity information as a second signal or a first signal; and a third step of acquiring a first signal by using a working parameter adjusting module 4 connected with the information judging module 6, and adjusting the working parameters of the welding mask according to the first signal.

The invention utilizes the photosensitive element to collect the signal of the user action for adjusting the working parameters, can simplify the operation steps and improve the welding operation efficiency under the scene that the working parameters need to be frequently adjusted; adopting the light intensity reduced to a preset value as a standard for judging the first signal, and judging another standard of the first signal according to the duration of the shielding action, so that the anti-interference capability in the aspect of adjusting working parameters is enhanced; by arranging the basic light source to provide initial brightness for the photosensitive element, the problem of signal confusion caused by the change of the ambient light intensity is reduced.

Drawings

FIG. 1 is a schematic view of a welding helmet based on photosensitive adjustment of operating parameters;

FIG. 2 is a schematic view of the connection of portions of a welding helmet;

FIG. 3 is a schematic view of the connection of portions of a welding helmet including a transmittance adjustment module;

FIG. 4 is a schematic view of a welding helmet including a base light source.

Detailed Description

In the following detailed description of the preferred embodiments of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration, specific features of the invention, such that the advantages and features of the invention may be more readily understood and appreciated. The following description is an embodiment of the claimed invention, and other embodiments related to the claims not specifically described also fall within the scope of the claims.

Fig. 1 shows a schematic view of a welding helmet based on photosensitive adjustment of operating parameters.

Fig. 2 shows a schematic view of the connection of parts of a welding helmet.

Fig. 3 shows a schematic view of connection of parts of a welding mask including a transmittance adjustment module.

As shown in fig. 1, 2 and 3, a welding mask based on photosensitive adjustment of working parameters comprises a mask body 1, a liquid crystal screen 2, a photosensitive element 3, an information judgment module 6, a light transmittance adjustment module 5 and a working parameter adjustment module 4, wherein the liquid crystal screen 2, the photosensitive element 3, the information judgment module 6, the light transmittance adjustment module 5 and the working parameter adjustment module 4 are mounted on the mask body 1, and the mask body 1 covers the face of a user; the liquid crystal screen 2 at least covers the eye part of a user and is used for providing variable light transmittance and stabilizing the intensity of incident light; the photosensitive element 3 faces the outer surface of the mask body 1 and is used for collecting light intensity information, and the light intensity information comprises a second signal generated based on the change of the ambient brightness influenced by the welding arc and a first signal based on the change of the ambient brightness influenced by the action of a user; the information judgment module 6 is connected with the photosensitive element 3 and used for acquiring the light intensity information and judging the light intensity information as a second signal or a first signal; the light transmittance adjusting module 5 is connected with the information judging module 6 and is used for acquiring a second signal and adjusting the light transmittance of the liquid crystal screen 2 according to the second signal; the working parameter adjusting module 4 is connected with the information judging module 6 and is used for acquiring a first signal and adjusting the working parameters of the welding mask according to the first signal.

The mask body 1 is a half-surrounded or full-surrounded shell, and is worn on the head by a user in a use state. The position of the mask body 1 corresponding to the eyes is provided with an observation window, and the arrangement position comprises one of a plurality of directions of the eyes, such as the upper, lower, left, right, front and the like, or one or a plurality of optional directions.

The working parameters of the welding mask comprise color number, sensitivity, time delay and the like.

The liquid crystal screen 2 is arranged on the observation window, so that a user can observe welding operation and the surrounding environment through the liquid crystal screen 2. The liquid crystal panel 2 is used as an electro-optical element, for example, a lens of an ADF, and can change brightness according to a change of an electrical signal to prevent strong light, ultraviolet rays, and infrared rays from passing through.

The photosensitive element 3 refers to an element sensitive to light, such as a silicon photodiode, a silicon phototriac, a photoresistor, a phototriode, a solar cell, and the like, and can convert the change of an optical signal into an electrical signal. The photosensitive element 3 is arranged on the mask body 1, and is used for detecting the intensity of light of a welding environment, whether a welding arc is generated or not, the speed of light change rate and the like, and the information is collectively referred to as light intensity information.

As shown in fig. 2, in the present invention, the photosensitive element is selected to be sensitive to the preset visible light only when the ambient light changes due to the user's motion. When the light intensity information collected by the selected photosensitive element only comprises a second signal generated based on the change of the ambient brightness influenced by the welding arc light, the second signal can be directly sent to the working parameter adjusting module without discrimination to serve as a basis for adjusting the working parameters of the welding mask.

The change of the ambient brightness based on the influence of the welding arc light comprises the ambient brightness of ultraviolet, visible, infrared and the like.

In fig. 2, the function of adjusting the working parameters of the welding mask may be implemented without simultaneously performing the light changing function of the automatic welding lens, and the lens does not change the transmittance when the working parameters are adjusted, and the working parameters are not adjusted when the transmittance is changed.

The device can also comprise an arc sensor for receiving arc signals, and the arc sensor can be integrated with the photosensitive element, or a sensor can be additionally arranged, or a non-optical sensor can be adopted. The light intensity information includes various signals, such as a change in brightness between day and night, a change in surrounding artificial lighting, and a change in the occurrence of an electric welding arc, and the information determination module can determine each light intensity according to the purpose. When welding arc light produced, the time ambient brightness became bright, and the highlight incides to light sensitive element 3, can make light sensitive element 3 produce the signal of telecommunication, and this part of signal of telecommunication can be transmitted to LCD screen 2 for LCD screen 2 is according to adjusting the luminousness, and this part of signal of telecommunication is the second signal.

In addition, when a user performs a predefined action near the photosensitive element 3, the action of the user affects incident light of the photosensitive element 3, and the photosensitive element 3 also generates an electrical signal, the electrical signal does not cause the liquid crystal screen 2 to adjust the light transmittance, but causes the working parameter adjusting module 4 to adjust the working parameter of the welding mask, and the electrical signal is the first signal.

The information judgment module 6, the light transmittance adjusting module 5 and the working parameter adjusting module 4 all belong to the components of the control mechanism, for example, the functions of the three are all completed by a single chip microcomputer loaded with a specific program or the functions of a module are respectively completed by three mutually related single chip microcomputers, and for example, the light transmittance adjusting module 5 is composed of a pure electric circuit and is used for directly loading a second signal on the liquid crystal screen 2 after the second signal is amplified and denoised.

Because the second signal and the first signal are both electric signals, but the functions are different, the control mechanism is required to judge after receiving the light intensity signal sent by the photosensitive element 3. The information judgment module 6 judges the first signal caused by the preset user action based on the characteristics of the preset user action, and the preset user action is set based on the characteristics of the second signal caused by avoiding the welding arc.

And after receiving the second signal, the light transmittance adjusting module 5 adjusts the light transmittance of the liquid crystal screen 2 according to the corresponding relationship between the second signal and the brightness of the liquid crystal screen 2.

And after receiving the first signal, the working parameter adjusting module 4 adjusts the working parameter according to the corresponding relation between the first signal and the working parameter of the welding mask.

According to the invention, different signals can be acquired by using the photosensitive element 3, the light transmittance and the working parameter adjustment of the welding mask are respectively controlled, when a user performs welding operation, the user does not need to search a knob or take off the welding mask to adjust the working parameter, and only needs to make a preset action which influences the light intensity of the photosensitive element 3, so that the working parameter adjustment can be completed, especially under the scene that the working parameter is frequently adjusted, for example, when various working conditions such as electric welding cutting operation, welding operation and the like are performed in a linked mode, the operation steps can be simplified, and the welding operation efficiency is improved.

In addition, the invention can also utilize the photosensitive element 3 to only collect the first signal, and utilize other modes to adjust the light transmittance of the liquid crystal screen 2.

According to one embodiment of the invention, the light sensitive element 3 comprises any one or a combination of a light sensitive sensor, a solar panel. That is, the photosensor 3 of the existing welding helmet itself can also be applied in the present invention.

According to an embodiment of the present invention, the user action is a blocking action, and when the light intensity falls below a predetermined value within a predetermined time, the light intensity information is determined to be the first signal.

The blocking operation is an operation in which the user blocks light from the photosensor 3 to reduce the intensity of light incident on the photosensor 3.

The light intensity is a precondition for judging the occurrence of the shielding action within a preset time, for example, the light intensity becomes dark instantly or within a short time to be shielding. The predetermined time may be set as desired to suit the average level of most users, and may be adjusted prior to wearing the welding helmet.

The drop in intensity below a predetermined value is one of the criteria for distinguishing the first signal, for example, when the welding arc is extinguished, the intensity also drops momentarily, but eventually only to ambient intensity. However, when the user performs the blocking action, the intensity of the light incident on the light sensitive element 3 will drop below the light intensity of the environment. The invention selects the intensity of the light intensity lower than the environment as the preset value, so that the first signal can be clearly identified.

According to an embodiment of the invention, the predetermined value is 2Lx, or any value from 0.1 to 20 Lx.

According to an embodiment of the present invention, in the operating parameter adjusting module 4, the type and value of the adjusting parameter corresponding to the first signal are set according to the duration of the shielding action. For example, the shade time lasts 1 second, the color number is adjusted; the shielding time lasts for 2s, and the sensitivity is adjusted; the shielding time lasts for 3s, and the time delay is adjusted. The corresponding relation between the specific duration and the parameter adjustment can be adjusted according to actual needs. However, the invention adopts the 'time length' as a standard for further judging the authenticity of the first signal, and excludes the signal which is preliminarily judged to be the first signal and has non-preset time length, so that the welding mask has enhanced anti-interference capability in the aspect of adjusting working parameters.

According to one embodiment of the present invention, the user action is a shaking action, and when the light intensity flickers for a predetermined number of times within a predetermined time, the light intensity information is determined to be the first signal.

The shaking motion means that the user performs operations such as shaking fingers or arms near the photosensitive element 3 to cause the light incident on the photosensitive element 3 to flicker. The flicker duration is preset to serve as a primary judgment standard of the first signal, then the flicker frequency serves as a secondary screening standard, the first signal can be distinguished from the second signal, effective isolation of the first signal and the second signal is achieved, and mutual interference between parameter adjustment and light transmittance adjustment is avoided.

In the present invention, the user action is not limited to the blocking action and the shaking action, and any other user action capable of effectively distinguishing and isolating the second signal from the first signal can be used in the present invention. The present invention prefers a shadowing action.

Fig. 4 shows a schematic view of a welding helmet comprising a basic light source.

As shown in fig. 4, the welding mask further includes a base light source 7, and an irradiation range of the base light source 7 covers the photosensitive element 3 to provide an initial brightness for the photosensitive element 3.

The basic light source 7 is arranged close to the light sensitive element 3, so that the light sensitive element 3 can be illuminated by the light emitted by the basic light source 7. The basic light source 7 can be a light source with adjustable brightness, and is used for stabilizing the ambient light intensity near the photosensitive element 3. For example, in nighttime construction and daytime construction, the intensity of incident light of the photosensor 3 is about 100Lx in a situation without a welding arc.

When the intensity of the ambient light in which the light sensitive element 3 is located varies, for example at night, it is possible that in the absence of arc light, the intensity of the ambient light drops to a predetermined value, thereby causing confusion between the second signal and the first signal. The setting of the basic light source 7 can reduce the signal confusion problem caused by the change of the environmental light intensity.

The setting of the basic light source 7 also enlarges the difference between the light intensity of the incident light of the photosensitive element 3 and the preset value, so that the signals generated by the shielding action of the user and the like can be more clearly distinguished.

According to one embodiment of the invention, the welding helmet further comprises a base light source 7, the illumination range of the base light source 7 covers the light sensitive element 3, and the base light source 7 adopts a predetermined spectrum different from welding arc and natural light for providing an initial brightness to the light sensitive element 3.

The base light source 7 may also be set in a spectral range such that the generation of the first signal is based on a specific spectral range, thereby distinguishing between the second signal.

According to one embodiment of the present invention, the light sensitive element 3 comprises a main path element and a branch path element, the main path element is arranged in front of the mask body 1 and is used for collecting a second signal generated based on the ambient brightness change caused by the welding arc; the branch component is arranged on the side or the rear of the mask body 1 and used for collecting a first signal based on the change of the ambient brightness influenced by the action of a user.

The invention can also divide the light sensitive element 3 into a main circuit element generating the second signal and a branch circuit element generating the first signal, and distinguish the sources of the second signal and the first signal through physical isolation, so as to further eliminate mutual interference between the second signal and the first signal.

According to one embodiment of the invention, the welding mask further comprises a prompting module, wherein the prompting module is arranged inside the mask body 1 and used for prompting the parameter adjusting state of a user by adopting any one or combination of light and voice.

The prompting module is used for prompting a user whether corresponding actions take effect or not corresponding to parameter adjustment, adjusting information such as amplitude and the like, and can adopt modes such as built-in earphones, light with various colors, liquid crystal flashing, displaying and the like.

According to another aspect of the present invention, there is provided a method for adjusting a welding helmet based on photosensitive adjustment of operating parameters, comprising a first step of collecting light intensity information including a second signal based on a change in ambient brightness due to the influence of a welding arc and a first signal based on a change in ambient brightness due to the influence of a user action, by using a photosensitive element 3 facing an outer surface of a helmet body 1; a second step of acquiring the light intensity information by using an information judgment module 6 connected with the photosensitive element 3 and judging the light intensity information as a second signal or a first signal; and a third step of acquiring a first signal by using a working parameter adjusting module 4 connected with the information judging module 6, and adjusting the working parameters of the welding mask according to the first signal.

The invention utilizes the photosensitive element to collect the signal of the user action for adjusting the working parameters, can simplify the operation steps and improve the welding operation efficiency under the scene that the working parameters need to be frequently adjusted; when the light intensity signal collected by the photosensitive element comprises various different signals, the light intensity is reduced to a preset value to serve as a standard for judging the first signal, and the other standard of the first signal is judged according to the duration of the shielding action, so that the anti-interference capability in the aspect of adjusting working parameters is enhanced; by arranging the basic light source to provide initial brightness for the photosensitive element, the problem of signal confusion caused by the change of the ambient light intensity is reduced.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.