KR102571718B1 - Monitoring and control system for welding work - Google Patents

Abstract

The present invention relates to a monitoring and control system for welding work, which monitors the flow rate of each supply line of shield gas in real time and controls it to the optimal flow rate for each supply line to prevent welding defects caused by insufficient shield gas supply while preventing excessive shield gas supply. This is to effectively prevent the increase in cost and increase in carbon emissions caused by this.
According to the present invention, a first flow sensor installed near the torch for each supply line connected to the shield gas distributor and measuring the final supply flow rate of the shield gas supplied to each torch; first solenoid valves installed in each supply line connected to the shield gas distributor; A shield gas control unit that receives information on the final supply flow rate of shield gas measured by the first flow sensor and controls the operation of the first solenoid valve so that the final supply flow rate of shield gas is within a pre-set optimum range. to be characterized

Description

Monitoring and control system for welding work}

The present invention relates to a monitoring and control system for welding work, and more particularly, to monitor the flow rate of each supply line of shield gas in real time and control it to the optimal flow rate for each supply line to prevent welding defects due to insufficient supply of shield gas while supplying excessive shield gas. It relates to a monitoring and control system for welding work that can effectively prevent cost increase and carbon emission increase problems caused by

As is well known, among metal bonding methods, welding is widely applied, and methods and materials for it are also greatly developed.

Most of the welding methods are arc welding, and arc welding uses electric energy to generate welding sparks (arc), and the high-temperature heat generated at this time melts and joins the base metal and filler metal. In order to secure the soundness of welding, molten metal must be shielded from the atmosphere, especially from oxygen. Insufficient or excessive shielding causes welding defects, making it impossible to secure the integrity of welding. In most arc welding, molten metal is shielded with an inert gas such as argon or a shielding gas such as carbon dioxide.

As shown in FIG. 1, a conventional welding system includes a user interface 22, a wire feeder and spindle 24, a gas flow controller 26, a welding power supply 28, and a gun 30. and shield gas was supplied from the gas supply source 32 to the gas flow controller 26. As the shielding gas, one of helium, nitrogen, argon, and carbon dioxide, which has inert properties, is often used to improve the quality of a welded part. Gas flow controller 26 includes a variable flow control, such as an electrically actuated solenoid, that allows a user to select a desired pressure or flow rate.

The shield gas is supplied from the gas supply source 32 to the flow controller 26 via the supply hose 34. A pressure regulator 36 is located between the gas source 32 and the supply hose 34 to regulate the output pressure. A gas torch line 38 extends from the gas flow controller 26 to the gun 30 . The gun 30 includes a trigger 40, which optionally includes a gas valve 42 through which a shielding gas can be flowed to provide the weld zone with the shielding gas. let it be In some configurations, the gas valve 42 of the trigger 40 is an on/off switch that allows or disallows flow through the gun 30, while in other configurations the gas valve 42 is the pull of the trigger 40. It is a variable valve that allows a variable amount of shielding gas to flow through the gun 30 according to the degree of engagement.

However, such a welding system according to the prior art was not suitable for the case of using a plurality of welders. When a plurality of welders are connected using a distributor, the amount of shield gas actually supplied to each welder is varied and the shield Where there is not enough gas, welding defects inevitably occur. One way to overcome this problem is to increase the supply flow rate of the shield gas, but there is a problem in that the cost increases and the amount of carbon emission increases, which adversely affects the environment.

Korean Patent Publication No. 10-2015-0053823 (2015.05.18)

Accordingly, the present invention has been proposed to solve the above conventional problems, and an object of the present invention is to control the optimal flow rate for each supply line while monitoring the flow rate of each supply line in real time to prevent insufficient shield gas supply. It is an object of the present invention to provide a monitoring and control system for a welding operation that can effectively prevent an increase in cost and an increase in carbon emission due to excessive supply of shield gas while blocking defects in welding caused by the welding process.

In order to achieve the above object, a welding operation monitoring and control system according to the technical idea of the present invention includes a storage container for supplying shield gas; a shield gas distributor distributing the shield gas transported from the storage container to a plurality of supply lines; a plurality of welders connected to each supply line to receive the shield gas distributed from the shield gas distributor; and a plurality of torches that are connected to the plurality of welders to perform welding and receive and spray shield gas from the welder to which they are connected, and are installed near the torches for each supply line connected to the shield gas distributor. a first flow rate sensor for measuring a final flow rate of the shield gas supplied to each of the flow rates; first solenoid valves installed on each supply line connected to the shield gas distributor; a shield gas controller configured to control the operation of the first solenoid valve so that the final shield gas supply flow rate is within a pre-set optimal range by receiving the information on the final supply flow rate of shield gas measured by the first flow sensor; Further inclusion is characterized in its technical configuration.

Here, a second flow rate sensor for measuring an initial supply flow rate of the shield gas immediately after being distributed near the shield gas distributor, and an initial flow rate of the shield gas measured by the second flow sensor and the shield gas measured by the first flow sensor Further comprising a leak rate calculation unit that compares the final supply flow rate to calculate the shield gas leak rate in the middle, and an inspection request unit that transmits an inspection request signal to the management office when the ratio of the leakage rate to the initial supply flow rate of the shield gas exceeds a certain value. can be characterized.

The work environment improvement unit may further include a working environment improvement unit, which adjusts the dust collection speed of the dust collector in proportion to the shield gas supply speed supplied to the torch and the wire supply speed of the wire feeder, It may be characterized in that the dust collection speed of the dust collector is adjusted with different weights on the wire feeding speed.

In addition, the working environment improvement unit receives fine dust concentration information for each zone in real time from fine dust measurement sensors installed in each zone in the workplace to measure the fine dust concentration, and increases or decreases the rotational speed of the exhaust fan installed for each zone. that can be characterized.

In addition, a gyro sensor is installed in the welding mask device used in each area of the workplace to detect the direction of viewing, and the work environment improvement unit collects dust from the dust collector when the welding mask device is in a downwardly laid state. It may be characterized in that the dust collection speed of the dust collector is increased when the speed is lowered and the welding mask device is in a state where it is erected to look upward or to the side.

In addition, the mask device for welding, covering the face of the welding operator and a mask body provided with a see-through window on the front; And mounted inside the mask body, a camera for photographing the front of the mask body as seen through the viewing window of the mask body is installed on the front side, and the camera is installed on the rear side at a position corresponding to the eye level of the welding operator. It may be characterized by including; an augmented reality glass module having a display outputting a composite image obtained by overlapping an augmented reality layer reflecting an image and augmented reality content.

In addition, the augmented reality glass module includes a recognition unit for recognizing a region to be welded displayed on the object to be welded from an actual image taken by the camera; and a layer creation unit for generating a translucent augmented reality layer displaying the region to be welded recognized by the recognition unit in the form of a line or a closed curve as the augmented reality content.

In addition, the viewing window is provided with a light blocking material, and the recognition unit recognizes the welding target area along the tack welding flame when the welding operator directs the welding target area while generating a welding spark on the surface of the welding object before the welding operation. can be characterized.

In addition, the viewing window may be made of a transparent material, and the recognition unit may recognize a color or mark previously displayed on the object to be welded as a region to be welded.

In addition, the augmented reality glass module further includes a shutter unit that lowers the contrast of the actual image captured by the camera to below a certain level in order to protect the eyesight of the welding worker at the moment when a certain level of illuminance is detected due to welding sparks. can be characterized.

In addition, an intake/exhaust area having a plurality of air inlets is provided at the lower part of the front surface of the mask body, and a dust collection filter for filtering out fine dust is installed in the intake/exhaust area. It is provided with a first fine dust measuring sensor and a second fine dust measuring sensor that measures the fine dust concentration after dust collection at the back of the dust collecting filter, and the fine dust concentration measured by the second fine dust measuring sensor is the augmented reality content is displayed on the augmented reality layer, and if the concentration of fine dust after dust collection is above a certain value, characters or symbols for requesting filter replacement are additionally displayed on the augmented reality layer, and before dust collection measured by the first fine dust measuring sensor Fine dust concentration information is provided to the management server in real time through the communication unit included in the augmented reality glass module, and when the measured concentration of fine dust before dust collection is above a certain value, it is characterized in that it is possible to request improvement of the working environment of the workplace. can

The monitoring and control system for welding work according to the present invention monitors the flow rate of each supply line of shield gas in real time and controls it to the optimal flow rate for each supply line to prevent welding defects caused by insufficient supply of shield gas, while preventing welding defects caused by excessive supply of shield gas. Cost increase and carbon emission increase problem can be effectively prevented.

1 is a reference diagram for explaining the prior art
Figure 2 is a configuration diagram of the entire welding system to which the monitoring and control system for welding work according to an embodiment of the present invention is applied
3 is a block diagram of a shield gas monitoring and control system according to an embodiment of the present invention
Figure 4 is a perspective view of a mask device for welding in the shield gas monitoring and control system according to an embodiment of the present invention
Figure 5 is a rear perspective view of a mask device for welding in the shield gas monitoring and control system according to an embodiment of the present invention
6 is a rear view of the welding mask device in the shield gas monitoring and control system according to an embodiment of the present invention
7 is a partially exploded perspective view of a welding mask device in a shield gas monitoring and control system according to an embodiment of the present invention.
8 is an exploded perspective view of the rear part of the welding mask device in the shield gas monitoring and control system according to an embodiment of the present invention
Figure 9 is a cross-sectional view along II' of Figure 4
10 is a configuration diagram of a welding mask device in a shield gas monitoring and control system according to an embodiment of the present invention.

Referring to the accompanying drawings, a mask device for welding according to embodiments of the present invention will be described in detail. Since the present invention can have various changes and various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention, or reduced than actual in order to understand the schematic configuration.

Also, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, they are not interpreted in an ideal or excessively formal meaning. .

<Example>

2 is a configuration diagram of an entire welding system to which a monitoring and control system for a welding operation according to an embodiment of the present invention is applied, and FIG. 3 is a configuration diagram of a shield gas monitoring and control system according to an embodiment of the present invention.

As shown, the welding operation monitoring and control system according to an embodiment of the present invention includes a storage container 210, a shield gas distributor 220, a welding machine 230, a torch 240, a first solenoid valve 250a, and a first solenoid valve 250a. 2 Solenoid valve (250b), dust collector 310, exhaust fan 330, shield gas control unit 321, working environment improvement unit 322, leakage amount calculation unit 323, inspection request unit 324, 1st A flow sensor 260a, a second flow sensor 260b, fine dust measuring sensors 140a and 140b, and a gyro sensor 140c are included as main components.

The monitoring and control system for welding work according to an embodiment of the present invention monitors the flow rate of each supply line of the shield gas in real time by the above components and controls the optimal flow rate for each supply line to prevent welding defects due to lack of shield gas supply. It is configured to effectively prevent the problem of increased cost and increased carbon emission due to excessive supply of shield gas while blocking the shield gas.

Hereinafter, a monitoring and control system for welding work according to an embodiment of the present invention will be described in more detail, focusing on the above components.

The storage container 210 stores and supplies shield gas.

The shield gas distributor 220 serves to distribute the shield gas transported from the storage container 210 to a plurality of supply lines. Shield gas can be distributed to each area of the workplace by the shield gas distributor 220 .

The welder 230 is not different from the general welder 230 and is connected to each supply line so that the shield gas distributed from the shield gas distributor 220 can be supplied.

The torch 240 is not different from a general torch 240 and is connected to a plurality of welders 230 respectively to receive and spray shield gas from the welder 230 connected thereto so that welding can proceed.

The first solenoid valve 250a is installed in each supply line connected to the shield gas distributor 220 to adjust the supply flow rate of the shield gas supplied to the torch 240 . Meanwhile, the second solenoid valve 250b is installed between the storage container 210 and the shield gas distributor 220 to control the entire shield gas supply flow rate before the shield gas is distributed by the shield gas distributor 220. do

The dust collector 310 serves to collect welding fume generated in the workplace. The dust collector 310 filters the welding fume generated from the torch 240 by the rotational force of the motor, like the weld groove dust collector disclosed by the present applicant in Patent Publication No. 2020-0063843 (2020.06.05) It may be provided as a dust collector that collects by sucking into the installed housing.

The exhaust fan 330 is installed to discharge polluted air from the workplace to the outside and is provided in the exhaust duct. The rotation speed of the exhaust fan 330 is controlled by the work environment improvement unit 322 in a plurality of zones in the workplace, and the rotation speed of the exhaust fan 330 increases when the concentration of fine dust in the zone is relatively high. When low, the rotational speed of the exhaust fan 330 is reduced. According to the configuration in which the rotational speed of the exhaust fan 330 is controlled by the working environment improvement unit 322, energy consumption due to the operation of the exhaust fan 330 is minimized while maintaining the concentration of fine dust in the entire workplace at an appropriate level. By doing so, the working environment can be improved.

As shown in FIG. 2, the first flow sensor 260a is installed near the torch 240 to measure the supply flow rate of the shield gas supplied to the torch 240, and the second flow sensor 260b is the shield gas. It is installed near the distributor 220 to measure the shield gas flow rate immediately after being distributed. According to the configuration including the first flow sensor 260a and the second flow sensor 260b, the final supply flow rate of the shield gas can be measured, as well as the initially branched supply flow rate and the final supply flow rate of the shield gas can be measured. It is possible to take action by calculating the amount of shield gas leaking in the middle by

The shield gas control unit 321 receives information on the final supply flow rate of shield gas measured by the first flow sensor 260a so that the final supply flow rate of the shield gas is a supply flow rate within a preset optimal range of the first solenoid valve ( Controls the operation of 250a). According to the configuration provided with the first flow rate sensor 260a and the shield gas control unit 321, the flow rate of each supply line of the shield gas is monitored in real time and the flow rate is controlled to be optimal for each supply line, thereby preventing welding defects due to lack of supply of the shield gas. In addition to blocking, it is possible to effectively prevent the problem of increased cost and increased carbon emission due to excessive supply of shield gas.

The leakage amount calculator 323 compares the initial supply flow rate of the shield gas measured by the second flow sensor 260b and the final supply flow rate of the shield gas measured by the first flow sensor 260a to shield gas leaking in the middle. Calculate the amount of leakage.

The inspection request unit 324 transmits an inspection request signal to the management office when the ratio of the leakage amount to the initial supply flow rate of the shield gas is equal to or greater than a predetermined value based on the amount of shield gas leakage calculated by the leakage amount calculation unit 323 . As a result, the management office can immediately take action on the problem of excessive leakage of shield gas in the middle.

The working environment improving unit 322 serves to adjust the dust collection speed of the dust collector 310 in proportion to the shield gas supply speed supplied to the torch 240 and the wire supply speed of the wire feeder 280 . At this time, the dust collection speed of the dust collector 310 is adjusted by giving different weights to the shield gas supply speed and the wire supply speed. For example, the dust collection speed of the dust collector 310 may be adjusted by applying a specific gravity of 0.8 to the wire supply speed and applying a specific gravity of 0.2 to the shield gas supply speed. In this way, in order for the working environment improvement unit 322 to adjust the dust collection speed of the dust collector 310 in consideration of the shield gas supply speed, it is installed near the torch 240 and measures the flow rate of the shield gas supplied to the torch 240. A first flow sensor 260a to measure the flow rate of the shield gas immediately after being distributed near the gas distributor 220 and a second flow sensor 260b to measure the flow rate of the shield gas are installed, and the work environment improving unit 322 is configured to measure the first flow rate. The dust collection speed of the dust collector 310 may be adjusted by calculating the shield gas supply speed from the shield gas flow rate measured by the sensor 260a.

The working environment improvement unit 322 receives fine dust concentration information for each zone in real time from fine dust measuring sensors installed in a plurality of zones in the workplace, and adjusts the rotational speed of the exhaust fan 330 when the fine dust concentration is relatively high. and, if low, the rotational speed of the exhaust fan 330 is reduced. The exhaust fan 330 is installed in the exhaust duct to discharge fine dust from the workplace to the outside of the workplace. According to the configuration provided with the working environment improvement unit 322, the working environment can be improved by maintaining the concentration of fine dust in the entire workplace at an appropriate level while minimizing energy consumption due to the operation of the exhaust fan 330.

The fine dust measurement sensor serves to measure the concentration of fine dust in each zone of the workplace. When such a fine dust measurement sensor measures the concentration of fine dust in each zone and generates fine dust concentration information for each zone in real time, the generated fine dust concentration information for each zone is used by the working environment improvement unit 322. It is a basis for adjusting the dust collection speed of the dust collector 310 to improve the environment. Such a fine dust measuring sensor may be installed in a fixed form in each area of the workplace, and may be provided in each area in the workplace in a form installed in the mask body of the welding mask device 100. In the latter case, the fine dust measurement sensor is installed in the intake and exhaust area provided at the lower front of the mask body, and the first fine dust measurement sensor measures the concentration of fine dust before dust collection in front of the dust collection filter, and the fine dust measurement sensor after dust collection at the rear of the dust collection filter. It is provided as a second fine dust measuring sensor that measures the dust concentration. The first fine dust measurement sensor measures the concentration of fine dust that has not been purified in the currently located area to generate fine dust concentration information, and transmits it to the management office and the work environment improvement unit 322 so that it can be utilized. The second fine dust measurement sensor measures the purified fine dust concentration after being collected by the dust collecting filter, and the measured fine dust concentration is displayed on the augmented reality layer as augmented reality content. If the concentration of fine dust exceeds a certain level after dust collection, characters or symbols for requesting filter replacement are additionally displayed on the augmented reality layer. This will be described again in detail later when the welding mask device 100 equipped with the augmented reality glass module is described.

Even in the case of the gyro sensor 140c, it is installed in the welding mask device 100 used in the workplace to detect the direction the welding mask device 100 is facing. Accordingly, when the welding mask device 100 is in a downwardly laid state, it is considered that the welding operation is stopped in the corresponding area, and the working environment improvement unit 322 lowers the dust collection speed of the dust collector 310 or the dust collector When the operation of 310 is stopped and the welding mask device 100 is erected to look upward or to the side, it is considered that the welding operation is in progress in the corresponding area, and the work environment improvement unit 322 is a dust collector ( 310) increases the dust collection speed. According to the configuration in which the gyro sensor 140c is installed in the welding mask device 100, it is possible to detect a change in posture of the welding mask device 100, and accordingly, it is possible to determine whether the welding operation is in progress or stopped to collect dust. It can be reflected in the control of the dust collection speed of the device 310.

Hereinafter, in the monitoring and control system for welding work according to an embodiment of the present invention, the welding mask device 100 provided in each zone of the workplace and responsible for important functions will be described.

Figure 4 is a perspective view of a mask device for welding in the monitoring and control system for welding work according to an embodiment of the present invention, Figure 5 is a rear perspective view of the mask device for welding in the monitoring and control system for welding work according to an embodiment of the present invention 6 is a rear view of the welding mask device in the monitoring and control system for welding work according to an embodiment of the present invention, and FIG. 7 is a part of the welding mask device in the monitoring and control system for welding work according to the embodiment of the present invention. 8 is an exploded perspective view of the rear part of the welding mask device in the welding monitoring and control system according to an embodiment of the present invention. And FIG. 9 is a cross-sectional view taken along line II′ of FIG. 4 .

As shown, in the welding monitoring and control system according to the embodiment of the present invention, the mask device for welding is a mask body 110, which grafts augmented reality (AR) technology to the mask body 110. It consists of an augmented reality glass module 120, a dust collection filter 130, and fine dust measurement sensors 140a and 140b as main components.

The mask body 110 is not significantly different from the shape of a normal welding mask and serves to cover and protect the face of a welding worker during welding. A viewing window 111 is installed on the front surface of the mask body 110 . The viewing window 111 may be made of a light blocking material like the viewing window of a general welding mask. However, in order to maximize the function of the augmented reality glass module 120, it is preferable to be provided with a transparent material. When the viewing window 111 is made of a transparent material, a light blocking filter 112 for protecting the eyesight of a welding operator from welding sparks is detachably mounted on the rear side of the viewing window 111 . According to the configuration in which the light-blocking filter 112 is detachably provided, when the augmented reality glass module 120 is mounted on the mask body 110, the light-blocking filter 112 is removed from the rear side of the viewing window 111 to create augmented reality The camera 122 of the glass module 120 can block light while smoothly photographing the front of the mask body 110 through the see-through window 111, and the augmented reality glass module 120 is attached to the mask body 110. When not mounted, the light blocking filter 112 is mounted on the rear side of the viewing window 111 so that welding can be performed by the mask body 110 alone.

As shown in FIGS. 7 and 8 , a pair of elastic holders 113 for mounting the augmented reality glass module 120 are installed on the left and right sides of the rear surface of the mask body 110 . The elastic holder 113 supports and mounts the augmented reality glass module 120 on the left and right sides of the mask body 110 . The elastic holder 113 is composed of a fixing part 113a fixed to the inner sidewall of the mask body 110, extending in an elongated shape backward from the fixing part 113a and made of an elastic material, so that the augmented reality glass module 120 An elastic connecting portion 113b in close contact with the side of the main body 121, and a snap coupling portion made of a shape that is additionally extended from the rear end of the elastic connecting portion 113b and protrudes inward compared to the elastic connecting portion 113b ( 113c). Here, in the case of the fixing part 113a of the elastic holder 113, a support protrusion 113d protruding from the inner surface facing each other is further formed.

As a result, the snap coupling portion 113c of the elastic holder 113 is first snapped and seated in the snap coupling groove 121a formed at the rear end of both sides of the main body 121 of the augmented reality glass module 120, and the augmented reality glass module ( 120) in a state in which the support protrusions 113d of the fixing part 113a are inserted into the protrusion inlet grooves 121b formed at the front ends of both sides of the main body 121, and a pair of elastic holders 113 insert the augmented reality glass module 120. Stable support is possible. In particular, the support protrusion 113d of the fixing part 113a of the elastic holder 113 and the protrusion inlet groove 121b formed at the front end of both sides of the main body 121 of the augmented reality glass module 120 result in augmented reality glass module In a state where the front end of 120 is located deeper inside the rear surface of the mask body 110 than the fixed point of the elastic holder 113, it can be noted that the stable support structure allows both the front and rear ends to be supported. This is so that the augmented reality glass module 120 does not interfere with the welding work despite the fact that the elastic holder 113 is formed as a straight body extending to the rear so that the augmented reality glass module 120 can be easily attached and detached. This means that it can be supported very stably.

The inner surface of the elastic connection part 113b of the elastic holder 113 is electrically connected to the first fine dust measuring sensor 140a and the second fine dust measuring sensor 140b installed in the mask body 110 to exchange information. A connection terminal 113e is installed to enable This facilitates wiring processing to exchange information between the augmented reality glass module 120 and the first fine dust measuring sensor 140a and the second fine dust measuring sensor 140b installed on the mask body 110 .

An intake/exhaust area 114 having a plurality of air inlets 114a is provided at the lower front of the mask body 110, and a dust collection filter for filtering out fine dust as shown in FIG. 9 inside the intake/exhaust area 114 ( 130) is installed. The dust collection filter 130 is preferably installed in a replaceable form. In addition, a first fine dust measurement sensor 140a for measuring the concentration of fine dust before dust collection is installed on the front side of the dust collection filter 130, and a second fine dust measurement sensor 140a for measuring the concentration of fine dust after dust collection is installed on the back side of the dust collection filter 130. (140b) is installed.

Here, when the concentration of fine dust before dust collection measured by the first fine dust measurement sensor 140a is above a certain value, information on the concentration of fine dust before dust collection is provided to a separately installed management server through the communication unit included in the augmented reality glass module 120 To request improvement of the work environment in the workplace. On the other hand, if the fine dust concentration measured by the second fine dust measurement sensor 140b is above a certain value, it is displayed as a filter replacement request letter or symbol as part of the augmented reality content in the augmented reality layer.

As described in the introduction, the augmented reality glass module 120 directly provides welding workers with information that can increase the convenience and efficiency of welding work, and monitors the welding worker's physical condition and working environment in real time to obtain a macroscopic view. It plays a key role in improving the working environment and building a more efficient work management system.

To this end, the augmented reality glass module 120 is simply attached and detached by a pair of elastic holders 113 provided on the mask body 110 at a position corresponding to the rear surface of the viewing window 111 as shown in FIGS. 7 and 8 possible to be installed To this end, protrusion inlet grooves 121b and snap coupling grooves 121a are formed in concave shapes at the front and rear ends of both side surfaces of the main body 121 of the augmented reality glass module 120, respectively. As a result, the augmented reality glass module 120 is stably supported by the fixing part 113a of the elastic holder 113, the support protrusion 113d and the snap coupling part 113c.

A camera 122 for photographing the front of the mask body 110 through the viewing window 111 of the mask body 110 is installed on the front of the main body of the augmented reality glass module 120, and the rear surface corresponds to the eye level of the welding operator A display 123 outputting a composite image in which a real image taken by the camera 122 through the viewing window 111 and an augmented reality layer reflecting augmented reality content is overlapped is provided at the location. Internally, as shown in FIG. 10, a recognition unit, a layer creation unit, a shutter unit, and a location information generation unit are provided around a control unit that controls the entire module to implement an augmented reality function, and a welding worker's body condition is monitored. To this end, a heart rate measuring sensor 124a and a body temperature measuring sensor 124b are also provided. Here, a close contact shield ring 122a made of a soft elastic material is installed along the lens circumference of the camera 122 on the front of the main body 121 of the augmented reality glass module 120 . The close shield ring 122a is in close contact with the rear side of the viewing window 111 when the augmented reality glass module 120 is mounted on the mask body 110, and the camera 122 ) serves to protect the filming from being disturbed.

The recognizing unit recognizes the region to be welded displayed on the object to be welded from the actual image captured by the camera 122, and the layer creation unit displays the region to be welded as augmented reality content in the form of a line or a closed curve. It plays a role in creating a semi-transparent augmented reality layer. Here, the recognizing unit recognizes the welding target part along with the tack welding spark when the welding worker directs the welding target part while generating tack welding sparks on the surface of the object to be welded before the welding operation. In this case, it is suitable when the viewing window 111 is provided with a light blocking material such as polarized glass that blocks most of the light itself to protect the eyesight of the welding worker, and it is possible to use a normal welding mask as it is. There are advantages.

Meanwhile, the recognition unit may recognize a color or mark previously displayed on the object to be welded as a region to be welded. This case is suitable when the viewing window 111 is not configured to block light by itself. In the case of the latter in which the viewing window 111 is configured not to block light by itself, it is advantageous to maximize the augmented reality glass module 120 as described above.

The shutter unit lowers the contrast of the actual image captured by the camera 122 to below a certain level at the moment when the augmented reality glass module 120 detects a certain level of illuminance due to welding sparks. When such a shutter unit is provided, it is possible to more actively protect the eyesight of a welding worker by minimizing the time exposed to intense welding sparks.

The location information generating unit serves to sense a current location and generate location information. As a result, it is possible to provide location information to an external management server through the communication unit. In this way, when the augmented reality glass module 120 is provided with a location information generation unit, identification numbers can be assigned to a plurality of welding mask devices used in various workplaces to confirm their location, so systematic equipment management becomes possible. .

The communication unit is responsible for communication of the augmented reality glasses module 120 and is responsible for connection between the management server and the augmented reality glasses module as shown in FIG. 9 . When such a communication unit is provided, the augmented reality glasses module 120 provides information collected and generated by itself to a management server located in a remote location, and can receive external information (second environment information) from the management server through the Internet. It happens. Selected information among the transmitted and received information is displayed on the augmented reality layer as augmented reality content.

The heart rate measurement sensor 124a is installed on the rear surface of the augmented reality glass module 120 and serves to measure the heart rate by contacting the welding worker's face. Accordingly, the heart rate information of the operator measured and generated by the heart rate sensor 124a may be displayed in the augmented reality layer as augmented reality content.

Like the heart rate sensor 124a, the body temperature measurement sensor 124b is installed on the rear surface of the augmented reality glass module 120 and serves to measure the body temperature by contacting the welding worker's face. As a result, the body temperature information of the operator measured and generated by the body temperature measuring sensor 124b may be displayed on the augmented reality layer as augmented reality content.

Since the heart rate information and body temperature information based on the measurements of the heart rate sensor 124a and the body temperature sensor 124b are important criteria for checking the physical condition of the welding worker, they are directly applied to the augmented reality layer as augmented reality content. It is displayed to allow the welding worker to check his/her own condition, and it is transmitted to the management server in real time through the communication unit to check the condition of the worker in real time and grant a break or comprehensively review the collected related information to determine the working time for each welding worker, It makes it possible to establish detailed plans such as shift timing.

As described above, the gyro sensor 140c serves to sense the direction in which the welding mask device 100 is looking. Accordingly, when the welding mask device 100 is in a downwardly laid state, it is considered that the welding operation is stopped in the corresponding area, and the working environment improvement unit 322 lowers the dust collection speed of the dust collector 310 or the dust collector When the operation of the 310 is stopped and the welding mask device 100 is erected to look upward or to the side, it is considered that the welding operation is in progress in the corresponding area, and the work environment improvement unit 322 is a dust collector. The dust collection speed of (310) is increased. According to the configuration in which the gyro sensor 140c is installed in the welding mask device 100, it is possible to detect a change in posture of the welding mask device 100, and accordingly, it is possible to determine whether the welding operation is in progress or stopped to collect dust. It can be reflected in the control of the dust collection speed of the device 310. As such, in the welding mask device 100, the gyro sensor 140c plays an important role in improving the environment in the workplace in association with other components of the welding monitoring and control system.

Although preferred embodiments of the present invention have been described above, the present invention can use various changes, modifications, and equivalents. It is clear that the present invention can be equally applied by appropriately modifying the above embodiment. Therefore, the above description does not limit the scope of the present invention, which is defined by the limits of the following claims.

100: mask device for welding 110: mask body
120: augmented reality glass module 210: storage container
220: shield gas distributor 230: welder
240: torch 250a: first solenoid valve
250b; Second solenoid valve 260a: first flow sensor
260b: second flow sensor 280: wire feeder
310: dust collector 320: management server
321: shield gas control unit 322: working environment improvement unit
323: leakage amount calculation unit 324: inspection request unit
325: database

Claims (11)

As a monitoring and control system for welding work,
a storage container supplying shield gas; a shield gas distributor distributing the shield gas transported from the storage container to a plurality of supply lines; a plurality of welders connected to each supply line to receive the shield gas distributed from the shield gas distributor; And a plurality of torches connected to each of the plurality of welders to perform welding and receive and spray shield gas from the welder to which they are connected,
a first flow sensor installed near the torch for each supply line connected to the shield gas distributor and measuring a final supply flow rate of the shield gas supplied to each torch; first solenoid valves installed on each supply line connected to the shield gas distributor; and a shield gas control unit receiving information on the final supply flow rate of shield gas measured by the first flow sensor and controlling an operation of the first solenoid valve so that the final supply flow rate of the shield gas is within a pre-set optimal range. Including more,
The dust collection speed of the dust collector is adjusted in proportion to the shield gas supply speed supplied to the torch and the wire supply speed of the wire feeder, but the dust collection speed of the dust collector is adjusted by giving different weights to the shield gas supply speed and the wire supply speed. It further includes a working environment improvement unit that is installed in each zone in the workplace to receive fine dust concentration information for each zone in real time from fine dust measuring sensors that measure the fine dust concentration, and the exhaust installed for each zone. A monitoring and control system for welding work, characterized in that for increasing or decreasing the rotational speed of the fan. According to claim 1,
A second flow rate sensor for measuring an initial flow rate of shield gas immediately after being distributed near the shield gas distributor, and an initial flow rate of shield gas measured by the second flow sensor and a final supply of shield gas measured by the first flow sensor It further includes a leak rate calculation unit that compares the flow rate to calculate the amount of shield gas leaking in the middle, and an inspection request unit that transmits an inspection request signal to the management office when the ratio of the amount of leakage to the initial supply flow rate of shield gas exceeds a certain value. Monitoring and control system for welding work. delete delete According to claim 1,
A gyro sensor is installed in the welding mask device used in each area of the workshop to detect the direction of looking.
The working environment improvement unit lowers the dust collection speed of the dust collector when the welding mask device is laid down and increases the dust collection speed of the dust collector when the welding mask device is erected to face upwards or sideways. A monitoring and control system for welding work, characterized in that. The method of claim 5, wherein the welding mask device,
A mask body with a see-through window installed on the front and covering the welding worker's face; and
Mounted inside the mask body, a camera for photographing the front of the mask body as seen through the viewing window of the mask body is installed on the front side, and an actual image captured by the camera on the rear side at a position corresponding to the eye level of the welding operator A monitoring and control system for a welding operation comprising: an augmented reality glass module having a display outputting a synthesized image obtained by overlapping an augmented reality layer reflecting augmented reality content; and an augmented reality glass module. According to claim 6,
The augmented reality glass module includes a recognition unit for recognizing a region to be welded displayed on the object to be welded from an actual image captured by the camera; and
A monitoring and control system for a welding operation comprising: a layer creation unit for generating a semi-transparent augmented reality layer displaying the region to be welded recognized by the recognition unit in the form of a line or a closed curve as the augmented reality content. According to claim 7,
The viewing window is provided with a light blocking material,
The recognition unit recognizes the welding target part along the tack welding spark when the welding worker directs the welding target part while generating a tack welding spark on the surface of the welding object before the welding operation. According to claim 7,
The viewing window is provided with a transparent material,
The recognition unit recognizes a color or mark previously displayed on the welding object and recognizes it as a welding target part. According to claim 7,
The augmented reality glass module further includes a shutter unit that lowers the contrast of the actual image captured by the camera to below a certain level in order to protect the eyesight of the welding worker at the moment when a certain level of illuminance is detected due to welding sparks. Monitoring and control system for welding work. According to claim 7,
An intake/exhaust area with a plurality of air inlets is provided at the lower front of the mask body, and a dust collection filter for filtering fine dust is installed in the intake/exhaust area, and a first fine dust concentration measuring the concentration of fine dust before dust collection is installed in the front surface of the dust collection filter. It is provided with a dust measuring sensor and a second fine dust measuring sensor that measures the concentration of fine dust after dust collection at the back of the dust collecting filter, and the fine dust concentration measured by the second fine dust measuring sensor is augmented as the augmented reality content. It is displayed on the reality layer, and when the concentration of fine dust after dust collection is above a certain value, characters or symbols for requesting filter replacement are additionally displayed on the augmented reality layer,
The fine dust concentration information before dust collection measured by the first fine dust measurement sensor is provided to the management server in real time through the communication unit included in the augmented reality glass module, and if the measured fine dust concentration before dust collection is above a certain value, the corresponding workplace A monitoring and control system for welding work, characterized in that to request work environment improvement.