Electric welding mask

Abstract

The utility model relates to an electric welding mask which comprises a mask shell, goggles installed on the mask shell, a searchlight and a control system, the goggles can be switched to an electric control optical filter in a transparent state or a non-transparent state, and the searchlight is provided with an LED lamp set. The LED power supply unit supplies power to the LED lamp group through the LED driving unit; the arc light detection unit is used for detecting electric welding arc light; the ambient light detection unit can detect ambient light intensity; the control processing unit is provided with a first input end connected with the arc light detection unit, a second input end connected with the ambient light detection unit, a first output end connected with the LED driving unit and a second output end connected with the electric control optical filter; in a normal state, the control processing unit receives an output signal of the ambient light detection unit so as to adjust the brightness of the LED lamp group; when electric welding arc light appears, the control processing unit receives an output signal of the arc light detection unit, the LED lamp set is turned off, and the electric control optical filter is switched from the transparent state to the non-transparent state.

Description

Technical Field

[0001] This application relates to the field of welding protection equipment technology, and in particular to a welding mask. Background Technology

[0002] Welding masks protect operators from sparks and vision damage. Traditional welding masks have goggles mounted on the mask housing, with the glass lenses on the goggles kept opaque.

[0003] At the welding site, operators need to frequently remove their welding masks to check the welding position. This repetitive action can cause localized strain on the body, leading to rapid fatigue and affecting work efficiency. Furthermore, it is inconvenient to operate in confined spaces. Utility Model Content

[0004] Therefore, it is necessary to provide a welding mask to address the aforementioned technical problems.

[0005] This application provides a welding mask, including a mask housing, goggles mounted on the mask housing, a searchlight, and a control system. The goggles have an electrically controlled filter that can be switched between a transparent and a non-transparent state. The searchlight has an LED light assembly. The control system includes:

[0006] LED power supply unit;

[0007] LED driving unit, the LED power supply unit supplies power to the LED lamp group through the LED driving unit;

[0008] Arc light detection unit, used to detect welding arc light;

[0009] Ambient light detection unit, used to detect ambient light intensity;

[0010] The control processing unit has a first input terminal connected to the arc light detection unit, a second input terminal connected to the ambient light detection unit, a first output terminal connected to the LED driving unit, and a second output terminal connected to the electronically controlled filter.

[0011] Under normal conditions, the control processing unit receives the output signal from the ambient light detection unit and then outputs a control signal to adjust the brightness of the LED light group. When welding arc light occurs, the control processing unit receives the output signal from the arc light detection unit, turns off the LED light group, and simultaneously switches the electronically controlled filter from a transparent state to a non-transparent state.

[0012] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0013] Optionally, the control system includes a manual adjustment unit and a switching unit. The control processing unit receives the output signal from the manual adjustment unit and then outputs a control signal to adjust the brightness of the LED light group. The switching unit is used to switch the control processing unit to receive the output signal from the ambient light detection unit or the manual adjustment unit.

[0014] Optionally, the switching unit and the manual adjustment unit are integrated into two trigger keys.

[0015] Optionally, the switching unit and the manual adjustment unit are integrated into the same trigger key. The control processing unit is configured to distinguish between the switching unit and the manual adjustment unit based on the trigger duration of the trigger key.

[0016] Optionally, the ambient light detection unit is indirectly connected to the second input terminal via an optical signal processor, which is used to convert the optical signal into an electrical signal.

[0017] Optionally, the control processing unit includes a microcontroller.

[0018] Optionally, the ambient light detection unit includes an ambient light sensor.

[0019] Optionally, the control system includes a power supply unit, which provides electrical energy and is simultaneously connected to the arc light detection unit, the ambient light detection unit, and the control processing unit.

[0020] The welding mask of this application has at least the following technical effects:

[0021] This welding mask adapts to the operator's needs, improving ease of use. Specifically, when the welding arc appears, the goggles darken to protect vision and the spotlight automatically turns off; when the arc disappears, the goggles become transparent for easier observation and the spotlight automatically turns on. Furthermore, the control unit adjusts the brightness of the LED lights according to the ambient light intensity via the LED driver unit, achieving adaptive lighting for the scene. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a welding mask according to an embodiment of this application;

[0023] Figure 2 for Figure 1 Assembly diagram;

[0024] Figure 3 This is a schematic diagram of the module structure of the control system in an embodiment of the welding mask of this application;

[0025] Figure 4 This is a schematic diagram of the module structure of the control system in an embodiment of the welding mask of this application;

[0026] Figure 5 This is a schematic diagram of the module structure of the control system in an embodiment of the welding mask of this application;

[0027] Figure 6 for Figure 4 Circuit schematic diagram of the switching unit and / or manual adjustment unit;

[0028] Figure 7 for Figure 3 Circuit schematic diagram of the ambient light detection unit;

[0029] The annotations in the figure are explained as follows:

[0030] 10. Face mask housing; 11. Searchlight; 12. Goggles; 21. LED driver unit; 22. Electrically controlled filter; 23. Arc light detection unit; 24. Ambient light detection unit; 31. LED light assembly; 32. LED power supply unit; 40. Control and processing unit;

[0031] 51. Manual adjustment unit; 52. Switching unit; 54. Power supply unit. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a system, product, or device that includes a series of units is not necessarily limited to those units that are explicitly listed, but may include other units that are not explicitly listed or that are inherent to such products or devices.

[0037] In this application, the terms "corresponding," "matching," "adapted," such as "B corresponding to A," "B corresponding to A," "A and B corresponding," or "B and A corresponding," indicate that B and A have a corresponding relationship in shape, position, or function, and that B can be determined based on A. Determining B based on A does not mean determining B solely based on A; B can also be determined based on A and / or other information.

[0038] See Figures 1-3 One embodiment of this application provides a welding mask, including a mask housing 10, a goggle 12 mounted on the mask housing 10, a searchlight 11, and a control system. The goggle 12 has an electrically controlled filter 22 that can be switched to a transparent state or a non-transparent state, and the searchlight 11 has an LED light group 31.

[0039] The control system includes an LED driving unit 21, an LED power supply unit 32 that supplies power to the LED lamp group 31 via the LED driving unit 21, an arc light detection unit 23 for detecting welding arc light, an ambient light detection unit 24 for detecting ambient light intensity, and a control processing unit 40.

[0040] The control processing unit 40 has a first input terminal connected to the arc light detection unit 23, a second input terminal connected to the ambient light detection unit 24, a first output terminal connected to the LED driving unit 21, and a second output terminal connected to the electronically controlled filter 22.

[0041] Under normal conditions, the control processing unit 40 receives the output signal from the ambient light detection unit 24 and then outputs a control signal to adjust the brightness of the LED light group 31. When welding arc light appears, the control processing unit 40 receives the output signal from the arc light detection unit 23, turns off the LED light group 31, and simultaneously switches the electronically controlled filter 22 from a transparent state to a non-transparent state.

[0042] In this embodiment, the LED light group 31 serves as the lighting element of the searchlight 11. The LED driving unit 21 can be implemented based on the existing LED power adjustment driving circuit. For example, the LED power adjustment driving circuit can be input with PWM signals of different duty cycles to achieve brightness adjustment (including turning off) of the LED light group 31. The electronically controlled filter 22 can be implemented based on a liquid crystal display element. The arc light detection unit 23 can be implemented by adjusting the sensitivity of the light sensor. The ambient light detection unit 24 can be implemented based on an ambient light sensor. The control processing unit 40 can be implemented based on a microcontroller unit (MCU).

[0043] In this embodiment, when the operator wears the welding mask, the mask adapts to the operator's work. Specifically, when the welding arc appears, the goggles 12 dim to protect vision and the searchlight 11 automatically turns off; when the welding arc disappears, the goggles 12 become transparent for easier observation and the searchlight 11 automatically turns on. Based on this, the control processing unit 40 adjusts the brightness of the LED light group 31 accordingly through the LED driving unit 21 based on the ambient light intensity, achieving adaptive lighting for the scene.

[0044] In terms of the specific workflow, the arc light detection unit 23 outputs a first signal when it detects welding arc light, and the ambient light detection unit 24 outputs a second signal representing the ambient light intensity based on the ambient light intensity when detecting ambient light. The control processing unit 40 is configured to: when receiving the first signal at the first input terminal, simultaneously control the electrically controlled filter 22 to enter a non-transparent state and control the LED driving unit 21 to turn off the LED light group 31; when not receiving the first signal at the first input terminal, simultaneously control the electrically controlled filter 22 to enter a transparent state and control the LED driving unit 21 to turn on the LED light group 31; and when receiving the second signal at the second input terminal, adjust the brightness of the searchlight 11 according to the magnitude of the second signal.

[0045] In practical implementation, ambient light intensity detection can be used for configuration. For example, when the photoelectric signal received at the second input terminal is less than 0.125V, the LED light group 31 of the searchlight 11 is turned on. The signal of the ambient light sensor changes linearly with the ambient light intensity. During initial configuration, the control processing unit 40 can learn the integrated signal of ambient light and reflected light and store it as the current reference ambient light signal. The reference ambient light signal is used as the threshold for whether to turn on the LED light group 31 in subsequent control processes.

[0046] The brightness of the LED light group 31 can be set to multiple levels, such as three levels, as needed. When the LED light group 31 is on, the control processing unit 40 dynamically adjusts it using the integrated ambient light signal, for example, by outputting PWM signals with different duty cycles. The LED driver unit 21 controls the LED light group 31 to display different expected brightness levels, ultimately achieving automatic adjustment of the searchlight 11 brightness according to the ambient light intensity. It can be understood that the stronger the ambient light, the lower the illuminance of the LED light group 31. When the ambient light is bright or even when no lighting is needed, the control processing unit 40 adjusts the brightness of the LED light group 31 accordingly to a dimmer level or turns it off.

[0047] See Figure 4 In some embodiments, the control system includes a manual adjustment unit 51 and a switching unit 52. The control processing unit 40 receives the output signal of the manual adjustment unit 51 and then outputs a control signal to adjust the brightness of the LED light group 31. The switching unit 52 is used to switch the control processing unit 40 to receive the output signal of the ambient light detection unit 24 or the manual adjustment unit 51.

[0048] Based on the automatic control of the searchlight 11's on / off state, this embodiment provides a technical solution for manually adjusting the searchlight 11 to different illuminance levels. In use, the control processing unit 40 can receive the output signal of the manual adjustment unit 51 through the control switching unit 52, which facilitates driving the manual adjustment unit 51 to cyclically adjust the brightness of the LED light group 31 according to preset levels (e.g., two levels).

[0049] In some embodiments, the switching unit 52 and the manual adjustment unit 51 are integrated into two trigger keys, namely the first trigger key and the second trigger key, respectively, for switching between two operating states of the control system. The two operating states of the control system can be summarized as manual state and automatic state. In manual state, the illuminance of the LED light group 31 is manually adjusted cyclically according to preset levels using the manual adjustment unit 51 integrated into the second trigger key; the automatic state is as described in the previous embodiment. In manual state, the illuminance level of the LED light group 31 can also be set to dimmer or off as needed.

[0050] See Figures 4-6 In some embodiments, the switching unit 52 and the manual adjustment unit 51 are integrated into the same trigger key. The control processing unit 40 is configured to distinguish between the switching unit 52 and the manual adjustment unit 51 based on the trigger duration of the trigger key. For example, a long trigger duration corresponds to the switching unit 52, while a short trigger duration corresponds to the manual adjustment unit 51. The long and short time thresholds can be set as needed.

[0051] like Figure 6As shown, the switching unit 52 and the manual adjustment unit 51 can be implemented based on a trigger circuit including a trigger key KEY. The trigger circuit includes a first resistor R1, a first capacitor C1, and a trigger key KEY, all three having a first terminal and a second terminal. The first terminal of the first resistor R1 is connected to a high level (e.g., +3.6V). The first terminal of the first capacitor C1 is connected to the second terminal of the first resistor R1, and the second terminal of the first capacitor C1 is grounded (signal ground). The first and second terminals of the trigger key KEY are respectively connected to the first and second terminals of the first capacitor C1. The second terminal of the first resistor R1 is also connected to the input port PA01 of the control processing unit 40, used to transmit an output signal to the control processing unit 40 after the trigger key KEY is triggered by the user.

[0052] In some embodiments, the control processing unit 40 is configured to enter an automatic sleep state if no arc light appears within a predetermined time (e.g., 10 minutes) (no received signal at the first input terminal) and the ambient light intensity remains unchanged (the received signal at the second input terminal remains unchanged). If either of these two conditions is violated, the automatic sleep state is exited; and if either the switching unit 52 or the manual adjustment unit 51 is triggered, the sleep state is also exited. It can be understood that if no ambient light is maintained within the predetermined time, it indicates that the spatial position remains unchanged; if no arc light appears, it indicates that no welding work is being performed. In this case, the control system enters an automatic sleep state, ending the control of the electrically controlled filter 22 and turning off the searchlight 11, thus reducing power consumption. The configuration of the control processing unit 40 can be implemented according to existing technologies regarding the read / write of microcontroller control logic.

[0053] See Figure 5 The control system includes a power supply unit 54, which provides electrical energy and is simultaneously connected to the arc light detection unit 23, the ambient light detection unit 24, and the control processing unit 40.

[0054] See Figure 7 The ambient light detection unit 24 is implemented based on an ambient light detection circuit, which includes an ambient light sensor P5, a second resistor R2, and a second capacitor C2. The positive terminal of the ambient light sensor P5 is connected to a high level (e.g., +3.6V), the negative terminal of the ambient light sensor P5 is grounded via the second resistor R2, and the second capacitor C2 is connected in parallel with the second resistor R2. The negative terminal of the ambient light sensor P5 is connected to the second input terminal PA02 of the control processing unit 40.

[0055] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0056] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A welding mask, comprising a mask housing, goggles mounted on the mask housing, a searchlight, and a control system, wherein the goggles have an electrically controlled filter switchable between a transparent and a non-transparent state, and the searchlight has an LED light assembly, characterized in that, The control system includes: LED power supply unit; LED driving unit, the LED power supply unit supplies power to the LED lamp group through the LED driving unit; Arc light detection unit, used to detect welding arc light; Ambient light detection unit, used to detect ambient light intensity; The control processing unit has a first input terminal connected to the arc light detection unit, a second input terminal connected to the ambient light detection unit, a first output terminal connected to the LED driving unit, and a second output terminal connected to the electronically controlled filter. Under normal conditions, the control processing unit receives the output signal from the ambient light detection unit and then outputs a control signal to adjust the brightness of the LED light group. When welding arc light occurs, the control processing unit receives the output signal from the arc light detection unit, turns off the LED light group, and simultaneously switches the electronically controlled filter from a transparent state to a non-transparent state.

2. The welding mask as described in claim 1, characterized in that, The control system includes a manual adjustment unit and a switching unit. The control processing unit receives the output signal from the manual adjustment unit and then outputs a control signal to adjust the brightness of the LED light group. The switching unit is used to switch the control processing unit to receive the output signal from the ambient light detection unit or the manual adjustment unit.

3. The welding mask as described in claim 2, characterized in that, The switching unit and the manual adjustment unit are respectively integrated into two trigger keys.

4. The welding mask as described in claim 2, characterized in that, The switching unit and the manual adjustment unit are integrated into the same trigger key.

5. The welding mask as described in claim 1, characterized in that, The ambient light detection unit is indirectly connected to the second input terminal through an optical signal processor, which is used to convert optical signals into electrical signals.

6. The welding mask as described in claim 1, characterized in that, The control processing unit includes a microcontroller.

7. The welding mask as described in claim 1, characterized in that, The ambient light detection unit includes an ambient light sensor.

8. The welding mask as described in claim 1, characterized in that, The control system includes a power supply unit, which provides electrical energy and is simultaneously connected to the arc light detection unit, the ambient light detection unit, and the control processing unit.

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