KR20230143973A - Welding information providing apparatus displaying partial picture - Google Patents

Abstract

The present invention relates to a welding information providing device displaying a divided screen. One embodiment of the present invention may comprise: a main body provided to be worn by a user; a camera unit mounted on an outer side of the main body and including at least one camera obtaining a welding image frame for a welding operation; a display unit disposed in the main body and providing a welding image; a processor controlling the display unit to display the welding image generated based on the welding image frame; and a lens unit having a pair of first lenses corresponding to the left and right eyes of the user, and guiding an image displayed from the display unit to the eyes of the user through the first lenses. The present invention can provide a welding information providing device capable of improving a user's welding accuracy by dividing and displaying a display screen according to a viewing distance.

Description

Welding information providing apparatus displaying partial picture}

The present invention relates to a welding information providing device that displays a split screen.

Protective equipment such as welding masks are used to protect users from light and high heat generated during the welding process. While wearing protective gear, the user can only check the progress of welding through the protective gear, so it is inconvenient to remove the protective gear and visually check to check various information for welding, such as conditions set in the welding device. There is.

If the user's skill level is not high, especially when wearing an automatic welding surface or a manual welding surface, the user can only see the part adjacent to the welding light, and it is difficult to recognize the specific welding situation, such as the environment around the welding. Accordingly, there is a need to provide users with high-definition images that allow them to visually check the environment surrounding the welding, and to provide users with specific information about welding status information.

Moreover, during welding work, the illuminance/brightness of the welding light spot is very high, so a blackening filter is used to protect the user's eyes from the welding light spot and to ensure smooth welding work. In this case, areas other than the welding light spot are used. becomes completely invisible, making welding work very difficult, and the accuracy of welding may actually deteriorate.

The above problems can cause the same problems to medical staff not only during welding work, but also during skin procedures and/or treatment using high-brightness/high-brightness light such as laser light, and the same problem can occur in work using other high-brightness/high-brightness light. It becomes a problem.

The purpose of the present invention is to provide a welding information providing device that can improve the user's welding accuracy by dividing the display screen according to the viewing distance.

However, these problems are illustrative, and the scope of the problems to be solved by the present invention is not limited thereto.

In order to solve the above-mentioned problem, one aspect of the present invention is a main body provided to be worn by a user, a camera unit mounted on the outside of the main body and including at least one camera that acquires a welding image frame for the welding operation. , a display unit disposed inside the main body and including a display panel that provides a welding image, a processor that controls the display unit to display the welding image generated based on the welding image frame, and the left and right eyes of the user. It may include a lens unit that is provided with a pair of corresponding first lenses and guides the image displayed from the display unit to the user's eyes through the first lenses.

Additionally, the first lens may be a convex lens or a Fresnel lens.

Additionally, it may include a lens adjustment module for adjusting the distance between centers of the first lenses.

Additionally, the viewing distance from the center of the user's field of view to the display panel may be 60 to 100 mm.

Additionally, it may include a display adjustment module for moving the display panel back and forth.

Additionally, it may include a lens position adjustment module for moving the lens unit back and forth.

Additionally, when the viewing distance is 60 to 80 mm, a pair of second lenses may be inserted between the first lens and the display panel to correspond to the first lens.

Additionally, the second lens may be a concave lens.

Additionally, when the viewing distance is 60 to 80 mm, the display unit may display the welding image by dividing it into two screens to correspond to the user's eyes.

Additionally, the processor may adjust the distance between the centers of two screens displayed on the display unit based on the distance between the centers of the first lens.

The present invention can provide a welding information providing device that can improve the user's welding accuracy by dividing the display screen according to the viewing distance.

In addition, the present invention can provide a welding information providing device that allows the user to perform precise and accurate welding work by adjusting the distance between lenses or the viewing distance depending on the user.

However, this effect is illustrative, and the effect of the present invention is not limited thereto.

1 is a diagram for explaining the structure of a welding system according to an embodiment of the present invention.
Figure 2 is a simplified block diagram for explaining the components of a welding system according to an embodiment of the present invention.
Figure 3 is a perspective view of a welding information providing device according to an embodiment of the present invention.
Figure 4 is an exploded perspective view of Figure 3.
Figure 5 is an exploded perspective view of the lens unit of Figure 4.
Figure 6 is a diagram for explaining the path of a welding image.
Figure 7 is a cross-sectional view taken along line A-A' in Figure 3.
Figure 8 is a diagram for explaining the left and right movement of the lens.
Figure 9 is a diagram for explaining screen division of a display.
FIG. 10(a) is a diagram for explaining the movement path of the welding image when including only the first lens, and FIG. 10(b) is a diagram for explaining the movement path of the welding image when including the first lens and the second lens. This is a drawing for
Figure 11 is a perspective view of a welding information providing device according to another embodiment of the present invention.
Figure 12 is a cross-sectional view taken along line BB' in Figure 11.
FIGS. 13 and 14 are diagrams for explaining the location of the camera unit of FIG. 11.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. When describing with reference to the drawings, identical or corresponding components will be assigned the same reference numerals and redundant description thereof will be omitted. .

In the following embodiments, terms such as first and second are used not in a limiting sense but for the purpose of distinguishing one component from another component.

In the following examples, singular terms include plural terms unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean that the features or components described in the specification exist, and do not exclude in advance the possibility of adding one or more other features or components.

In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are shown arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is shown.

In the following embodiments, the x-axis, y-axis, and z-axis are not limited to the three axes in the Cartesian coordinate system, but can be interpreted in a broad sense including these. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, but may also refer to different directions that are not orthogonal to each other.

In cases where an embodiment can be implemented differently, a specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially at the same time, or may be performed in an order opposite to that in which they are described.

Hereinafter, the welding information providing device 100 according to the present invention will be described in detail according to the above-described principles.

Figure 1 is a diagram for explaining the structure of a welding system 10 according to an embodiment of the present invention.

Referring to FIG. 1, the welding system 10 of the present invention may include a welding information providing device 100 and a welding torch 200. The welding information providing device 100 and the welding torch 200 are connected to each other through a communication network and can transmit and receive data. The welding information providing device 100 and the welding torch 200 may operate in a one-to-one correspondence, but are not limited to this and may also operate in a one-to-n correspondence. In other words, n welding torches 200 can be connected to one welding information providing device 100, and one welding torch 200 can be connected to n welding information providing devices 100. there is. In addition, the welding information providing device 100 and the welding torch 200 can communicate with a separate server (not shown) to exchange data.

The welding information providing device 100 may provide information about the welding situation to the user. Specifically, the welding information providing device 100 may acquire a welding image using at least one camera mounted on the welding information providing device 100, generate a composite image based on the obtained image, and display it to the user. The welding information providing device 100 can generate a composite image using High Dynamic Range (HDR) technology, and display and provide a high-definition composite image to the user. At this time, the user can visually check the shape of the weld bead and information about the surrounding environment other than the area adjacent to the welding light through the high-definition composite image.

The welding information providing device 100 according to an embodiment of the present invention may acquire a welding image by placing a camera unit at a position equivalent to the user's field of view or a position adjacent to the user's field of view. Through this, the welding information providing device 100 according to an embodiment of the present invention can provide more accurate welding information to the user by acquiring a welding image similar to that when the user directly looks at the work site.

In addition, the welding information providing device 100 according to an embodiment of the present invention can synthesize and provide high-definition welding images. To this end, images are acquired through two or more cameras and each image is displayed on at least one display unit. It can be displayed through. For example, the camera unit may include two cameras, which may be placed at positions corresponding to the user's left and right eyes, respectively.

The welding information providing device 100 can synthesize images by repeatedly shooting with different shutter speed, ISO sensitivity, and gain values of each camera. The welding information providing device 100 according to an embodiment of the present invention can improve image quality by performing contrast processing on a composite image.

Additionally, the welding information providing device 100 of the present invention can provide a function of displaying welding information in a preferred color (eg, green, blue) using RGB. Additionally, the welding information providing device 100 of the present invention can provide a magnifying glass power correction function (eg, screen enlargement and reduction). Additionally, the welding information providing device 100 of the present invention can provide a temperature composite image using a separate thermal imaging camera. At this time, the welding information providing device 100 may display the welding temperature in color. The welding information providing device 100 of the present invention can support the function of providing all of the above-described functions with sound (eg, guidance alarm) or guidance voice.

The welding torch 200 according to an embodiment of the present invention monitors the welding situation including welding temperature, welding direction, welding slope, welding speed, and distance between the base material and the welding torch for real-time welding work through at least one sensor. It can be sensed. The welding torch 200 can monitor the state of the torch and change the torch work setting value depending on the welding situation.

The welding information providing device 100 of the present invention is capable of receiving information about work settings and work status from the welding torch 200 through a communication network connected to the welding torch 200, and provides information to the user based on the received welding information. Task information can be provided through visual feedback.

For example, when the welding information providing device 100 receives sensing information about a welding temperature value, it can output a notification corresponding to the temperature value in various ways, such as light, vibration, or a message. At this time, the notification may be visual feedback provided on the display unit or display of the welding information providing device 100, or may be auditory feedback through a sound (eg, a guidance alarm) or a guidance voice.

Meanwhile, sensing information about the temperature value may include information about whether the temperature value exceeds a preset temperature range. Additionally, the sensing information about the temperature value may include a numerical value, grade, level, etc. corresponding to the temperature value of the welding surface.

If the welding information providing device 100 according to an embodiment of the present invention determines that the temperature values of the torch and the welding surface are outside the preset temperature range, it may guide the user to stop work. In the case of welding outside the preset temperature range, there is a risk of quality deterioration, so the user can be guided to adjust the temperature value of the torch.

At this time, the visual feedback may be providing an icon indicating danger to a portion of the display area of the welding information providing device 100 displaying the work site. As another example, the welding information providing device 100 may provide work stoppage guidance through visual feedback by repeatedly increasing and decreasing the saturation of a specific color (for example, red) on the entire display screen.

According to one embodiment of the present invention, the welding information providing device 100 can detect welding information through a sensor included in the welding information providing device 100, in addition to at least one sensor included in the welding torch 200. there is. At this time, the welding information may detect the welding situation, including light intensity related to real-time welding work, welding temperature, welding direction, welding slope, welding speed, and distance between the base material and the welding torch, etc. through at least one sensor.

Likewise, the welding information providing device 100 may provide guidance corresponding to welding information based on welding information detected through a sensor included in the welding information providing device 100.

According to an embodiment of the present invention, the welding information providing device 100 changes the operation of the welding torch 200 by sensing the movement of a preset user or the voice of a preset user after guidance on the importance of work is provided. You can.

As another example, when communication with the welding torch 200 is not smooth, the welding information providing device 100 may acquire temperature values of the torch and the welding surface through image sensing provided by the welding torch 200. For example, the welding information providing device 100 may acquire temperature values of the torch and the welding surface based on image data acquired through a thermal imaging camera.

The above example only describes the case where the information received from the welding torch 200 is welding temperature information, and of course, the welding information providing device 100 can provide guidance for various welding information.

FIG. 2 is a simplified block diagram for explaining the components of a welding system according to an embodiment of the present invention, FIG. 3 is a perspective view of a welding information providing device according to an embodiment of the present invention, and FIG. 4 is a diagram of FIG. 3. This is an exploded perspective view.

Referring to FIGS. 2 to 4 , the welding system 10 may include a welding information providing device 100 and a welding torch 200. The welding information providing device 100 may include a main body 101, a camera unit 110, a display unit 120, a lens unit 130, a processor 140, a sensor unit 150, and a communication unit 190. there is.

In addition, the welding information providing device 100 is disposed on the rear of the main body 101 and an outer cover unit 160 to protect the camera unit 110, so that the welding information providing device 100 is placed on the user's head. It may include a fixing part 180 that is fixed to.

The main body 101 is intended to protect the user's face and may be provided so that the user can wear it. The main body 101 may be made of a material having a certain strength, such as reinforced plastic, but the present invention is not limited thereto, and any material that is resistant to elements such as sparks that may occur during welding can be used.

The main body 101 may be fixed to the user's head through a fixing part 180 provided on the inside of the main body 101. The fixing part 180 may have a structure including a plurality of ribs like a head gear, and an element containing a soft material such as a fiber material or a cushion material may be disposed on at least a portion of the inner surface that is in direct contact with the user's head. .

As an example, the welding information providing device 100 may further include a light blocking plate 170 disposed on the outside of the main body 101. For example, the light blocking plate 170 may be provided on the outside of the main body 101 and may be arranged to face the direction in which welding occurs. The light blocking plate 170 may be a means for reflecting welding heat generated during the welding process. Therefore, the user may not be exposed to excessive heat during the welding process. At this time, the light blocking plate 170 may be formed of a material capable of reflecting welding heat, for example, may be formed of a material containing aluminum.

The camera unit 110 is mounted on the outside of the main body 101 and may include at least one camera that acquires welding image frames for welding operations. The camera unit 110 may receive a control command from the processor 140 and change settings of shutter speed, ISO sensitivity, and gain in response to the control command to photograph the welding work phenomenon.

As one embodiment, the camera unit 110 may be located on the front part of the main body 101 corresponding to the user's field of view. The camera unit 110 may include one camera to acquire welding image frames for welding operations, but the present invention is not limited thereto.

As another embodiment, the camera unit 110 may place two cameras at positions corresponding to the user's left and right eyes, respectively. As another embodiment, the camera unit 110 may further include a camera that obtains a welding image frame by shooting from a position other than the front part of the main body 101 corresponding to the user's field of view.

The camera unit 110 may be protected by the outer cover unit 160. The outer cover unit 160 may include an outer cover frame 161, an outer cover plate 162, and a light blocking cartridge 163.

The outer cover frame 161 may perform the function of coupling the outer cover unit 160 to the main body 101.

The outer cover plate 162 is disposed in front of the light blocking cartridge 163 and can protect the light blocking cartridge 163. The outer cover plate 162 may include a material that allows light to pass through, for example, a transparent material. The outer cover plate 162 may include a resin material such as polycarbonate or acrylic, and may be molded by injection molding.

The light-shielding cartridge 163 can block welding light generated when welding occurs. That is, the light-shielding cartridge 163 may increase the light-shielding degree of the cartridge based on welding light information detected through the sensor unit 150, for example, a photo sensor. At this time, the light-shielding cartridge 163 may include, for example, a liquid crystal panel (LCD panel) whose blackening degree can be adjusted depending on the alignment direction of the liquid crystal. For example, the light-shielding cartridge 163 may be implemented with various panels, such as a VA (Vertical Align) type LCD, a TN (Twist Nematic) type LCD, and an IPS (In Plane Switching) type LCD.

The blackening degree of the light-shielding cartridge 163 can be automatically adjusted according to the brightness of the welding light. As described above, in the case where the brightness of the welding light is automatically adjusted, the sensor unit 150 can be used. The sensor unit 150 acquires welding light information by detecting the light intensity of the welding light, and transmits the information about the intensity of the welding light included in the welding light information as a predetermined electrical signal to the processor 140, which will be described later. (140) can control the degree of blackening based on the intensity of the welding light.

That is, the light-shielding cartridge 163 can change the light-shielding degree of the panel in real time to correspond to the intensity of light generated at the welding surface at the welding work site, and the camera unit 110 is connected to the light-shielding cartridge 163 installed at the front. It is possible to capture welding images with a certain amount of welding light shielded.

According to another embodiment of the present invention, the welding information providing device 100 may not include the light-shielding cartridge 163. In this case, the user can perform welding work only with the welding image acquired through the camera unit 110.

The camera unit 110 according to an embodiment of the present invention may include a thermal imaging camera. The welding information providing device 100 may obtain a temperature image by combining a thermal image obtained through a thermal imaging camera with an image of the welding site.

According to one embodiment of the present invention, a lighting unit (not shown) electrically connected to the processor 140 may be further included. The lighting unit (not shown) is located outside the welding information providing device 100 and is configured to irradiate light toward at least the welding work area. The lighting unit (not shown) may include a plurality of LED modules, and the output level of light emitted through the lighting unit (not shown) may be adjusted by control of the processor 140. According to one embodiment, the lighting unit (not shown) may operate in conjunction with the operation of the camera unit 110 under the control of the processor 140.

The display unit 120 is disposed inside the main body 101 and can provide a welding image. The display unit 120 may provide the welding image obtained from the camera unit 110 as is or may provide a high-definition composite image including welding information.

The display unit 120 can display a high-definition composite image so that the user can visually check the surrounding environment (for example, the shape of a previously worked weld bead, etc.) other than the area adjacent to the welding light. Additionally, the display unit 120 may guide the user with visual feedback on the welding progress status (eg, welding progress direction).

The display unit 120 is implemented with various display technologies such as Liquid Crystal Display (LCD), Organic Light Emitting Diodes (OLED), Light-Emitting Diode (LED), Liquid Crystal on Silicon (LcoS), or Digital Light Processing (DLP). It can be.

The display unit 120 is a display panel 121 that displays a welding image acquired from the camera unit 110 or a high-definition composite image including welding information, and is disposed outside the display panel 121 to display the display panel 121. It may include a display frame 122 for fixing it.

As an example, a rack may be formed on the display frame 122. At this time, the rack formed on the display frame 122 may be a means that enables the display panel 121 to move forward and backward, as will be described later. That is, the welding information providing device 100 according to an embodiment of the present invention may include a display adjustment module, and a pinion may be formed on the display adjustment module to engage with a rack formed on the display frame 122. Accordingly, the user can adjust the front and rear positions of the display panel 121 using the display adjustment module.

The processor 140 may synthesize welding image frames received through the camera unit 110 to generate a high-definition composite image. The processor 140 allows the camera unit 110 to set different shooting conditions for each frame and obtain a composite image by synthesizing frames acquired in time order in parallel. Specifically, the processor 140 may control the camera unit 110 to take pictures by changing the shutter speed, ISO sensitivity, and gain of the camera of the camera unit 110.

At this time, the processor 140 may set different shooting conditions depending on conditions such as the sensed welding light at the welding site, ambient light, and the degree of movement of the welding torch 200. Specifically, the processor 140 may set shooting conditions so that the ISO sensitivity and gain decrease as the welding light and/or ambient light at the welding site increases. Additionally, when the movement and/or work speed of the welding torch 200 is detected to be fast, shooting conditions can be set to increase the shutter speed.

The processor 140 may synthesize images of a preset number of frames in parallel. According to an embodiment of the present invention, each image within a preset frame may be captured under different shooting conditions.

If there are two or more cameras in the camera unit 110, the processor 140 according to an embodiment of the present invention may control the shooting by setting different shooting setting conditions for each camera. Even in this case, the processor 140 can synthesize images of a preset number of frames in parallel.

The processor 140 may control the overall operation of the welding information providing device 100 using various programs stored in memory (not shown). For example, the processor 140 may include a CPU, RAM, ROM, and a system bus. Here, the ROM is a configuration in which a set of instructions for system booting is stored, and the CPU copies the operating system stored in the memory of the welding information providing device 100 to RAM according to the instructions stored in the ROM and runs the O/S to run the system. Boot it. Once booting is complete, the CPU can copy various applications stored in memory to RAM and execute them to perform various operations. Although the processor 140 is described above as including only one CPU, it may be implemented with multiple CPUs (or DSP, SoC, etc.).

According to an embodiment of the present invention, the processor 140 may be implemented as a digital signal processor (DSP), a microprocessor, and/or a time controller (TCON) that processes digital signals. However, it is not limited to this, and is not limited to a central processing unit (CPU), a micro controller unit (MCU), a micro processing unit (MPU), a controller, an application processor (AP), or It may include one or more of a communication processor (CP) and an ARM processor, or may be defined by the corresponding term. In addition, the processor 140 may be a System on Chip (SoC) with a processing algorithm embedded, or an LSI (LSI). It may be implemented in the form of large scale integration or in the form of an FPGA (Field Programmable Gate Array).

The sensor unit 150 may include a plurality of sensor modules configured to detect various information about the welding site and obtain welding information. At this time, the welding information may include welding temperature for real-time welding work, welding direction, welding slope, welding speed, and the distance between the base material and the welding torch. Moreover, the sensor unit 150 may include an optical sensor module configured to detect the level of light within at least the welding work area.

According to one embodiment of the present invention, the sensor unit 150 may include an illuminance sensor, and at this time, the sensor unit 150 may obtain information about the intensity of welding light at the welding site. In addition to the illuminance sensor, the sensor unit 150 may further include various types of sensors such as a proximity sensor, a noise sensor, a video sensor, an ultrasonic sensor, and an RF sensor. , various changes related to the welding work environment can be detected.

The communication unit 190 is configured to receive welding information from the welding torch 200 and transmit commands for controlling the welding torch 200. According to one embodiment of the present invention, the communication unit 190 can transmit the composite image to an external device other than the welding torch 200. At this time, the external device may include various devices including a communication module, such as a user/third party's smartphone or computer.

The communication unit 190 may be configured to communicate with various types of external devices according to various types of communication methods. The communication unit 190 may include at least one of a Wi-Fi chip, a Bluetooth chip, a wireless communication chip, and an NFC chip. In particular, when using a Wi-Fi chip or a Bluetooth chip, various connection information such as SSID and session key are first transmitted and received, and various information can be transmitted and received after establishing a communication connection using this. A wireless communication chip refers to a chip that performs communication according to various communication standards such as IEEE, Zigbee, 3G (3rd Generation), 3GPP (3rd Generation Partnership Project), and LTE (Long Term Evolution). An NFC chip refers to a chip that operates in the NFC (Near Field Communication) method using the 13.56MHz band among various RF-ID frequency bands such as 135kHz, 13.56MHz, 433MHz, 860~960MHz, 2.45GHz, etc.

Meanwhile, although not shown, the welding torch 200 may include a communication unit, a sensor unit, and a second processor.

The communication unit transmits and receives data with the welding information providing device 100. The communication unit includes modules capable of short-range wireless communication (e.g., Bluetooth, Wifi, Wifi-Direct) or long-range wireless communication (3G, High-Speed Downlink Packet Access (HSDPA), or Long Term Evolution (LTE)). can do.

The sensor unit or second sensor is included in the welding torch and is configured to sense welding conditions such as welding temperature, welding speed, welding slope, welding direction, and the distance between the base material and the welding torch.

The sensor unit detects at least one of various changes, such as a change in the posture of the user holding the welding torch 200, a change in the illuminance of the welding surface, and a change in acceleration of the welding torch 200, and sends the corresponding electrical signal to the second processor. It can be passed on. That is, the sensor unit can detect a change in state based on the welding torch, generate a detection signal accordingly, and transmit it to the second processor.

In the present disclosure, the sensor unit may be composed of various sensors, and when the welding torch 200 is driven (or based on user settings), power is supplied to at least one preset sensor according to control to detect a change in the state of the welding torch 200. can do.

In this case, the sensor unit may be configured to include at least one device among all types of sensing devices that can detect changes in the state of the welding torch 200. For example, the sensor unit includes an acceleration sensor, a gyro sensor, an illuminance sensor, a proximity sensor, a pressure sensor, a noise sensor, and a video sensor. It may be configured to include at least one sensor among various sensing devices such as (video sensor), gravity sensor, etc. The light level within the welding work area detected through the illuminance sensor of the welding torch 200 may be transmitted to the processor 140 through the communication unit, and the processor 140 may communicate with the sensor unit 150 of the welding information providing device 100. Instead of going through, the lighting unit (not shown) and/or the camera can be controlled based on the level of light transmitted through the illuminance sensor of the welding torch 200.

Meanwhile, the acceleration sensor is a component for detecting the movement of the welding torch 200. Specifically, the acceleration sensor can measure dynamic forces such as acceleration, vibration, and impact of the welding torch 200, and thus can measure the movement of the welding torch 200.

A gravity sensor is a component that detects the direction of gravity. That is, the detection result of the gravity sensor can be used together with the acceleration sensor to determine the movement of the welding torch 200. Additionally, the direction in which the welding torch 200 is held can be determined through the gravity sensor.

In addition to the above-described types of sensors, the welding torch 200 may further include various types of sensors such as gyroscope sensors, geomagnetic sensors, ultrasonic sensors, and RF sensors, and can detect various changes related to the welding work environment.

Figure 5 is an exploded perspective view of the lens unit of Figure 4.

Referring to FIG. 5 , the lens unit 130 may be a means of guiding the image displayed from the display unit 120 to the user's eyes. For example, the lens unit 130 is provided with a pair of first lenses 131 to correspond to the user's left and right eyes, and transmits the image displayed from the display unit 120 through the first lens 131 to the user's left and right eyes. You can guide with your eyes.

In one embodiment, the lens unit 130 includes the first lens 131 and a first lens frame 133 that is arranged to surround at least one area of the first lens 131 and protects the first lens 131. It may include a second lens frame 134 disposed outside the first lens frame 133.

For example, the first lens frame 133 may be formed to correspond to the outer shape of the first lens 131 so that the first lens 131 is interpolated. As an optional embodiment, the first lens frame 133 includes a 1-1 lens frame that surrounds the first lens 131 and protects the first lens 131 so as to be in direct contact with the first lens 131, and a first lens frame 133 -1 The lens frame may include a 1-2 lens frame disposed outside the 1-1 lens frame so that the lens frame is stably inserted and fixed. However, it is not limited to this, and the first lens frame 133 may be composed of one structure.

The first lens 131 may be formed as a pair to correspond to the user's left and right eyes. Therefore, as will be described later, the distance between the centers of the left and right lenses of the first lens 131 may be adjusted to correspond to PD, which is the distance between the user's eyes.

As an example, the first lens 131 may be a convex lens. Accordingly, the user can enlarge the welding image displayed from the display unit 120 and view it in detail. As an optional embodiment, the first lens 131 may be a Fresnel lens. Accordingly, the thickness of the first lens 131 can be reduced, so that the lens unit 130 can be configured compactly, and further, the welding information providing device 100 can be configured compactly.

The second lens frame 134 may be disposed outside the first lens frame 133. For example, it may be combined with the first lens frame 133 so that the first lens frame 133 is fixed.

As an example, a rack may be formed in the second lens frame 134. At this time, the rack formed on the second lens frame 134 may be a means that allows the lens unit 130 to move forward and backward, as will be described later. That is, the welding information providing device 100 according to an embodiment of the present invention may include a lens position adjustment module, and a pinion is formed in the lens position adjustment module to engage with the rack formed in the second lens frame 134. It can be. Accordingly, the user can adjust the front and rear positions of the lens unit 130 using the lens position adjustment module.

Figure 6 is a diagram for explaining the path of a welding image.

Referring to FIG. 6, the welding image may be moved in the order of the welding occurrence point (WP), the camera unit 110, the display unit 120, the lens unit 130, and the user's eyes. That is, the welding scene at the welding occurrence point WP can be acquired as a welding image frame through the camera 111 included in the camera unit 110. A welding image generated based on a welding image frame acquired through the camera 111 may be displayed by the display unit 120. At this time, the processor 140 may control the display unit 120 to display a welding image generated based on the welding image frame. The welding image displayed by the display unit 120 may be visible to the user's eyes through the lens unit 130.

Meanwhile, the distance from the welding occurrence point to the user's field of view may be 500 to 700 mm.

If the distance from the welding occurrence point to the user's field of view is less than 500 mm, the welding information providing device 100 cannot be formed to include the camera unit 110, the display unit 120, and the lens unit 130. That is, in order for the welding information providing device 100 to be formed to include the above-described configuration, the distance from the welding occurrence point WP to the user's field of view needs to be secured at least 500 mm.

Additionally, if the distance from the welding occurrence point (WP) to the user's field of view exceeds 700 mm, a sense of incongruity may occur between the environment in which the user works and the welding image projected to the user's eyes. In other words, if the distance from the welding occurrence point (WP) to the user's field of view exceeds 700mm, the user may not be able to perform the welding work efficiently and precisely because the actual welding work and the welding image reflected to the eye are different. It can happen.

Figure 7 is a cross-sectional view taken along line A-A' in Figure 3.

Referring to FIG. 7 , the camera unit 110 may include a camera 111. The camera 111 may be a means of capturing a welding scene and obtaining a welding image frame for the welding operation. The welding information providing device 100 may synthesize welding image frames obtained through the camera 111 into welding images and display them to the user.

The camera 111 may include a camera 111 lens through which optical images generated at the welding occurrence point (WP) pass. At this time, the vertical distance d1 from the center of the lens of the camera 111 to the center of the user's field of view may be 50 mm or less.

The user can perform welding work while wearing the welding information providing device 100. The user may not feel discomfort when performing the welding work while looking at the welding point, so the user can accurately and easily perform the welding work. there is. Therefore, it is desirable that the direction in which the camera 111 lens faces and the user's viewing direction are not separated by more than a certain distance. That is, if the vertical distance (d1) from the center of the lens of the camera 111 to the center of the user's field of view exceeds 50 mm, the difference between the position expected to be reflected in the user's field of view and the position actually captured by the camera 111 is As it grows larger, visual discomfort may occur.

As one embodiment, the camera unit 110 may include a camera adjustment module 112 for adjusting the position of the camera 111. The camera adjustment module 112 may be a means for adjusting the vertical position of the camera 111. Accordingly, the user can adjust the position of the camera 111 during the welding work and proceed with the welding work without feeling any discomfort.

The viewing distance d2, which is the distance from the user's field of view to the display unit 120 during welding work, may be set to 60 to 100 mm. For example, the viewing distance d2 may be the distance from the user's field of view to the surface of the display panel 121 included in the display unit 120. At this time, the display panel 121 may be a screen or a screen on which a welding image is displayed. If the viewing distance d2 is less than 60 mm, a sufficient distance is not secured for the welding image displayed on the display unit 120 to be transmitted to the user's field of view, and the welding image may be distorted or not transmitted clearly. In addition, when the viewing distance (d2) exceeds 100 mm, the welding point and the user's field of view are too far away, which may cause a feeling of discomfort from the user's perspective.

As an example, the display unit 120 may be moved forward or backward. To this end, the welding information providing device 100 may include a display adjustment module for moving the display panel 121 back and forth.

For example, the display adjustment module can move the display panel 121 back and forth to allow the user to perform welding work while providing an optimal welding screen.

As an optional embodiment, the display adjustment module may move the display panel 121 within a predetermined display movement section d3. For example, the display movement section d3 may be 20 mm or less. If the display movement section d3 exceeds 20 mm, the distance from the display panel 121 to the user's field of view may become too close, which may cause a problem in which a distorted or unclear welding image is transmitted to the user's field of view.

At this time, the display movement section d3 may be included in the viewing distance d2. That is, the viewing distance d2 may be a distance including the display movement section d3 and the lens movement section d4, which will be described later.

Meanwhile, the welding information providing device 100 may further include a display adjustment device 123 for controlling the display adjustment module. For example, the display adjustment device 123 may be a means for controlling the forward and backward movement distance d3 of the display panel 121 by controlling the display adjustment module. The display adjustment device 123 may be configured as a button or a rotary switch. However, it is not limited to this.

The lens unit 130 may be provided with a pair of first lenses 131 to correspond to the user's left and right eyes. The first lens 131 may be a means of guiding the image displayed from the display unit 120 to the user's eyes.

As an example, the lens unit 130 may be moved forward and backward. For example, for this purpose, the welding information providing device 100 may include a lens position adjustment module for moving the lens unit 130 back and forth.

For example, the lens position adjustment module can move the lens unit 130 back and forth to allow the user to see the optimal welding screen in the user's field of view. In other words, the size or resolution of the welding screen that each user perceives as optimal may be different, and each user may have different visual acuity. Accordingly, to correspond to this, the lens position adjustment module can provide a welding screen optimized for each user by moving the position of the lens unit 130 back and forth.

As an optional embodiment, the lens position adjustment module may move the lens unit 130 within a predetermined lens movement section d4. For example, the lens movement section d4 may be 20 mm or less. If the lens movement section d4 exceeds 20 mm, the distance from the lens unit 130 to the user's field of view may become too far, which may cause a problem in which a distorted or unclear welding image is transmitted to the user's field of view.

At this time, the lens movement section d4 may be included in the viewing distance d2. That is, the viewing distance d2 may be a distance including the display movement section d3 and the lens movement section d4.

Meanwhile, the welding information providing device 100 may further include a lens position adjustment device 135 for controlling the lens position adjustment module. For example, the lens position adjustment device 135 may be a means for controlling the lens position adjustment module to adjust the forward and backward movement distance d4 of the lens unit 130. The lens position adjustment device 135 may be configured as a button or a rotary switch. However, it is not limited to this.

Figure 8 is a diagram for explaining the left and right movement of the lens.

Referring to FIG. 8, the distance d5 between the pair of first lenses 131 arranged to correspond to both eyes of the user can be adjusted.

As described above, the first lens 131 may be a convex lens or a Fresnel lens. Since the outer surface of such a lens is curved, the center of the lens should be placed at the center of the user's pupil to obtain the clearest and clearest image. You can. However, since the distance (PD) between the eyes of each person is different, the distance (d5) between the first lenses 131 also needs to be adjusted to correspond to this.

To this end, the welding information providing device 100 may include a lens PD adjustment module for adjusting the distance d5 between the centers of the first lenses 131. For example, the lens PD adjustment module may be a means for adjusting the PD (d5) of the pair of first lenses 131.

Accordingly, the user can automatically or manually adjust the distance d5 between the centers of the first lens 131 to correspond to the distance between the user's two eyes.

As an optional embodiment, the welding information providing device 100 may further include a lens PD adjustment device 136 for controlling the lens PD adjustment module. For example, the lens DP adjustment device may be a means for controlling the lens PD adjustment module to adjust the distance d5 between the first lenses 131. The lens PD adjustment device 136 may be configured as a button or a rotary switch.

At this time, the distance d5 between the first lenses 131 may be 60 to 70 mm. That is, the distance d5 between the first lenses 131 can be adjusted to correspond to the distance between the general pupil of a person, so there may be no need to provide unnecessary space in the welding information providing device 100.

On the other hand, if the first lens 131 is placed at a distance of 20 mm or less from the user's eyes, the lens may be too close to the eyes and may provide the user with an unclear image or cause an inverted image. Accordingly, the lens unit 130 may be arranged to be spaced 20 mm or more from the user's eyes. For example, the first lens 131 may be placed at a distance of 20 mm or more from the user's eyes.

FIG. 9 is a diagram for explaining screen division of the display, FIG. 10(a) is a diagram for explaining the movement path of the welding image when only the first lens 131 is included, and FIG. 10(b) is a diagram for explaining the first lens 131. This diagram is for explaining the movement path of the welding image when the lens 131 and the second lens 132 are included.

Referring to FIGS. 9 and 10 (a) and (b), the display unit 120 selectively displays the welding operation image on one screen or divides it into two screens to correspond to the user's eyes and displays the welding operation image. can do.

For example, when the viewing distance d2 is greater than a predetermined value, a path through which the image displayed on the display panel 121 enters the user's field of view is sufficiently secured, so a clear welding image can be displayed only through the first lens 131. You can get it. On the other hand, when the viewing distance d2 is smaller than a predetermined value, the path through which the image displayed on the display panel 121 enters the user's field of view is not sufficiently secured, so a clear welding is possible only through the first lens 131. Problems may arise in which video cannot be obtained.

To solve this, when the viewing distance d2 is 60 to 80 mm, a pair of second lenses 132 are placed between the first lens 131 and the display panel 121 to correspond to the first lens 131. can be placed.

As an embodiment, when the viewing distance d2 is 60 to 80 mm, the welding information providing device 100 is provided between the first lens 131 and the display panel 121 to correspond to the first lens 131. The second lens 132 may be inserted. To this end, the welding information providing device 100 may include a second lens movement module for moving the second lens 132.

As an optional embodiment, when the processor 140 recognizes that the viewing distance d2 is 60 to 80 mm, the processor 140 controls the second lens movement module to move the second lens 132 to the first lens 131 and the display panel 121. ) can be inserted between. In addition, when the processor 140 recognizes that the viewing distance d2 is 80 to 100 mm, the processor 140 controls the second lens 132 movement module to move the second lens 132 to the first lens 131 and the display panel 121. ) can be separated from the range.

For example, when the user moves the display panel 121 back and forth, the display movement section d3 may change, and when the user moves the lens unit 130 back and forth, the lens movement section d4 may change. In this case, since the viewing distance (d2) changes when the display movement section (d3) and the lens movement section (d4) change, the processor 140 calculates the movement amount of the display panel 121 and the movement amount of the lens unit 130. When the viewing distance d2 is 60 to 80 mm, the second lens movement module can be controlled to insert the second lens 132 between the first lens 131 and the display panel 121.

As an example, the second lens 132 may be a concave lens. That is, when the viewing distance d2 is 60 to 80 mm, the concave lens can refract the optical image displayed on the display panel 121 to offset an insufficiently secured optical path. That is, by refracting the light emitted from the display panel 121 and making it enter the first lens 131, the user can obtain a clear and vivid image.

As an example, when the second lens 132 is inserted, that is, when the viewing distance d2 is 60 to 80 mm, the display unit 120 is divided into two screens to correspond to the user's eyes to display the welding work image. can be displayed. For example, by displaying two welding work images to correspond to the user's left and right eyes, the divided images can be projected to the user's left and right eyes, respectively.

This may be to prevent a problem that causes image distortion when an image is projected too close to both eyes of the user. Accordingly, the display unit 120 provides a divided image to both eyes of the user when the viewing distance (d2) is 60 to 80 mm, and controls the distance of the divided image so that the user perceives it as one undistorted image. You can make it happen.

Meanwhile, when the second lens 132 is inserted, the second lens 132 may be arranged to correspond to the first lens 131. For example, the second lens 132 may be arranged to be combined with the first lens 131. Accordingly, when the distance d5 between the first lenses 131 changes, the second lens 132 can move together to correspond.

Additionally, when the first lens 131 moves within the range of the lens movement section d4, the second lens 132 may also move together.

The distance between the centers of the two screens displayed on the display unit 120 can be adjusted manually or automatically.

For example, when a split screen is displayed on the display unit 120, the welding information providing device 100 may include an image PD adjustment module for adjusting the distance between the centers of the two split screens.

As another example, the processor 140 may adjust the distance between the centers of two screens displayed on the display unit 120 based on the distance d5 between the centers of the first lens 131. That is, the processor 140 can adjust the distance between the centers of the two screens to provide a clear image to the user's field of view based on the distance d5 between the centers of the first lens 131. That is, when the value of the distance between the lenses (d5) changes, the distance value between the centers of the split screens is immediately reflected, and the relative positions of the split screens can change simultaneously.

Figure 11 is a perspective view of a welding information providing device according to another embodiment of the present invention, and Figure 12 is a cross-sectional view taken along line B-B' of Figure 11.

Hereinafter, for convenience of explanation, the description will focus on differences from the above-described embodiment. That is, the configuration included in the above-described embodiment can also be adopted in this embodiment within the scope of implementation.

11 and 12, the welding information providing device 100 includes a main body 101, a camera unit 110, a display unit 120, a path change unit 130', a processor 140, and a sensor unit ( 150), and may include a communication unit 190. In addition, the welding information providing device 100 includes an outer cover unit 160 to protect the camera unit 110, an inner cover unit 170 disposed between the display unit 120 and the user, and the main body 101. It may include a fixing part 180 that is disposed on the back and fixes the welding information providing device 100 to the user's head.

Here, except for the path change unit 130', the remaining configuration may be the same as the above-described embodiment or may be modified within a similar range.

The path change unit 130' may change the path of the welding image provided from the display unit 120 and guide it to the user's eyes. For example, the path change unit 130' may be made of a mirror that reflects a welding image. The path change unit 130' according to the embodiment of FIG. 11 includes a first mirror 131' that changes the path of the welding image provided from the display unit 120 (A → B), and a first mirror 131' ) may include a second mirror 132' that changes the path of the welding image changed from (B → C) and guides it to the user's eyes. The drawing shows a case where the path of the welding image is changed using two mirrors, but the technical idea of the present invention is not limited to this, and the path of the welding image can be changed by further including more mirrors or members capable of changing the path. Of course it can be changed.

Here, the first mirror 131' and the second mirror 132' may be made of or coated with a material that reflects the welding image, for example, poly methyl methacrylate (PMMA), poly carbonate (PC), or polyester. , Ag (silver), or Al (aluminum).

The first mirror 131' is inclined at an angle of 45° to 50° with respect to the path of the welding image, so that the path of the welding image can be changed to be vertical. Likewise, the second mirror 132' is inclined at an angle of 45° to 50° with respect to the path of the welding image changed from the first mirror 131', so that the path of the welding image can be changed perpendicularly. For example, the first mirror 131' and the second mirror 132' may be arranged in an axisymmetric relationship with respect to the center line passing through the path change unit 130', but the present invention is not limited thereto.

The welding image provided from the display unit 120 may be reflected and inverted by the first mirror 131', and then inverted again by the second mirror 132' and provided to the user. At this time, in order to provide the user with the same image as the actual work site, the display unit 120 must provide a welding image with the upper and lower images reversed, so the welding image provided by the display unit 120 is provided by the camera unit 110. ) may be an image in which the top and bottom and left and right of the image acquired through is reversed. In another embodiment, when the path change unit 130' includes more mirrors, the processor 140 redirects the image obtained from the camera unit 110 to provide the user with the same image as the work site. It can be delivered to the display unit 120.

Since it is difficult for the human eye to focus on an object that is too close, a clear image can be obtained only when the display unit 120 is placed at the focal distance of the field of view. If the display unit 120 is placed in front of the user, the size of the welding information providing device 100 must be increased to secure this distance. The welding information providing device 100 according to an embodiment of the present invention can secure the focal length of the welding image provided from the display unit 120 through the path change unit 130', and use the display unit 120 to Since it can be placed in an appropriate position, the size of the main body 101 can be made compact.

The distance of the path along which the welding image passes from the display unit 120 to the user's eyes through the path change unit 130' of the above-described structure may be 200 mm or more. In addition, the user can work at a distance of approximately 500 mm to 700 mm between the field of view and the site. When the distance of the welding image path provided from the display unit 120 exceeds 700 mm, the user may work There may be a sense of incongruity between the environment and the image. Accordingly, the path of the welding image changed through the path change unit 130' can be determined in a range of 700 mm or less. In other words, the combined distance of path A, path B, and path C in FIG. 3 may be 200 mm or more and 700 mm or less.

FIGS. 13 and 14 are diagrams for explaining the location of the camera unit of FIG. 11.

Referring to FIG. 13, the camera unit 110 according to an embodiment of the present invention may be placed at a position where a virtual extension line extending from the optical axis AX1 of the camera passes the path change unit 130'.

As an example, a virtual extension line extending from the optical axis AX1 of the camera unit 110 may pass through the second mirror 132' of the path change unit 130'. Specifically, the camera unit 110 is parallel to the path of the welding image from the second mirror 132' and moves up and down with respect to the virtual first surface P1 passing through the center O2 of the second mirror 132'. It can be located within ±30mm (A1) in any direction.

In other words, the camera unit 110 can be placed on the front part of the main body 101 so as to be located at a height similar to the user's field of view, and through this, an image can be obtained at the same level as the user's eye level.

Referring to FIG. 14 , as another embodiment, the camera unit 110 may include two cameras corresponding to the user's left eye and right eye, respectively. The two cameras may be arranged symmetrically with respect to the center line C1 of the main body 101, and the distance d between the optical axes of each camera may range from 60 mm to 70 mm.

As described above, it may be located within a range (A1) of ±30 mm in the vertical direction based on the virtual first surface (P1) passing through the center (O2) of the second mirror 132'.

As such, the present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

Specific implementations described in the embodiments are examples and do not limit the scope of the embodiments in any way. For the sake of brevity of the specification, descriptions of conventional electronic components, control systems, software, and other functional aspects of the systems may be omitted. In addition, the connections or connection members of lines between components shown in the drawings exemplify functional connections and/or physical or circuit connections, and in actual devices, various functional connections or physical connections may be replaced or added. Can be represented as connections, or circuit connections. Additionally, if there is no specific mention such as “essential,” “important,” etc., it may not be a necessary component for the application of the present invention.

In the specification of the embodiment (particularly in the claims), the use of the term “above” and similar referential terms may refer to both the singular and the plural. In addition, when a range is described in an example, the invention includes the application of individual values within the range (unless there is a statement to the contrary), and is the same as describing each individual value constituting the range in the detailed description. . Lastly, unless the order of the steps constituting the method according to the embodiment is clearly stated or there is no description to the contrary, the steps may be performed in an appropriate order. The embodiments are not necessarily limited by the order of description of the steps above. The use of any examples or illustrative terms (e.g., etc.) in the embodiments is merely for describing the embodiments in detail, and unless limited by the claims, the scope of the embodiments is not limited by the examples or illustrative terms. That is not the case. Additionally, those skilled in the art will recognize that various modifications, combinations and changes may be made depending on design conditions and factors within the scope of the appended claims or their equivalents.

10: Welding system
100: Welding information provision device
101: body
110: Camera unit
120: display unit
130: Lens unit
130': Path change unit
140: processor
150: sensor unit
160: Outer cover unit
170: light blocking plate
180: fixing part
190: Department of Communications
200: welding torch

Claims (10)

A main body that can be worn by a user;
a camera unit mounted on the outside of the main body and including at least one camera for acquiring welding image frames for welding operations;
a display unit disposed inside the main body and including a display panel that provides a welding image;
a processor that controls the display unit to display the welding image generated based on the welding image frame; and
A welding information providing device comprising: a lens unit having a pair of first lenses to correspond to the user's left and right eyes, and guiding an image displayed from the display unit through the first lenses to the user's eyes; . According to paragraph 1,
The first lens is,
A welding information providing device, which is a convex lens or a Fresnel lens. According to paragraph 1,
A welding information providing device comprising a lens adjustment module for adjusting the distance between centers of the first lenses. According to paragraph 1,
A viewing distance from the center of the user's field of view to the display panel is 60 to 100 mm. According to paragraph 1,
A welding information providing device comprising a display adjustment module for moving the display panel back and forth. According to paragraph 1,
A welding information providing device comprising a lens position adjustment module for moving the lens unit back and forth. According to paragraph 4,
When the viewing distance is 60 to 80 mm,
A welding information providing device in which a pair of second lenses are inserted between the first lens and the display panel to correspond to the first lens. In clause 7,
The welding information providing device, wherein the second lens is a concave lens. According to paragraph 4,
When the viewing distance is 60 to 80 mm,
The display unit is divided into two screens to correspond to the user's eyes and displays the welding image. According to clause 9,
The processor,
Welding information providing device for adjusting the distance between the centers of two screens displayed on the display unit based on the distance between the centers of the first lens.