Projection device and projected image adjustment system including the same

Abstract

To provide a projection device capable of adjusting the projection position, projection size, inclination, etc., by a simple and intuitive operation when projecting an image of a working face before concrete is sprayed onto the working face after concrete is sprayed. [Solution] A projection device 1 that projects an image of a construction face before concrete is sprayed onto the face after concrete has been sprayed using projection mapping, and is equipped with a communication function 11, a projection function 2, and a control function 13, and the control function adjusts and adapts the image projected onto the face to the face that is the target of the projection by operating the touch panel screen of a touch panel type information device 3.

Description

[Technical Field]

[0001] The present invention relates to a device for projecting an image of a construction face before concrete is sprayed onto the face after concrete has been sprayed, and a projected image adjustment system including this projection device. [Background technology]

[0002] When excavating a tunnel, it is common to spray concrete onto the tunnel face to prevent the excavated ground from collapsing or loosening. After the concrete is sprayed onto the tunnel face, it becomes impossible to visually inspect the condition of the ground (the bare excavated surface before the concrete was sprayed).

[0003] On the other hand, the location of the blasting holes is often determined by the worker's visual inspection and intuition, based on the geological conditions of the tunnel face that the worker has memorized. In other words, if the worker cannot visually inspect the condition of the ground, it is difficult for the worker to determine the appropriate drilling location.

[0004] Patent Document 1 proposes a technique for visually inspecting the condition of the natural ground even after concrete has been sprayed onto the tunnel face. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2017-48646 Summary of the Invention [Problem to be solved by the invention]

[0006] The technology described in Patent Document 1 is "A device for managing the construction of a tunnel face by projecting information necessary for tunnel excavation onto the mirror surface of the tunnel face, the device comprising: information storage means for storing information necessary for tunnel excavation; and projection means for projecting the information stored in the information storage means onto the mirror surface." The information projected onto the mirror surface is information regarding at least one of the following: the face condition in the unlined excavation state, the geological condition, the spring water condition, warnings, blasting patterns, the casting position and directional range of auxiliary construction methods. In other words, the idea is to "project the state of the tunnel face in its unexcavated state onto the mirrored surface of the tunnel face."

[0007] The technology described in Patent Document 1 makes it possible to project the condition (image) of the face before concrete is sprayed onto the face after concrete has been sprayed, allowing workers to visually check the condition of the ground while determining the blasting hole drilling position, etc.

[0008] However, with the technology described in Patent Document 1, when projecting an image of the face before concrete is sprayed onto the face after concrete has been sprayed, there is a risk of problems such as the projection position, projection size, or tilt not matching the face that is the target of projection. In this case, even if an image of the face before concrete is sprayed is projected, there is a problem in that it is not possible to accurately display the condition of the natural ground.

[0009] Although it is possible to adjust the projection position, projection size, or tilt by changing the settings of the projection device or operating the lens, it is necessary to check the settings and adjustment methods of the projection device using a manual, etc., which wastes time on the adjustment work and places a heavy burden on the worker.

[0010] Therefore, the object of the present invention is to provide a projection device and a projection image adjustment system including this projection device that can adjust the projection position, projection size, tilt, etc. through simple and intuitive operations when projecting an image of a construction face before concrete is sprayed onto the construction face after concrete has been sprayed. [Means for solving the problem]

[0011] The above object of the present invention is achieved by the following configuration.

[0012] 1. A device that projects an image of the face before concrete spraying onto the face after concrete spraying by projection mapping, a communication function for receiving the captured image from another device; a projection function of projecting the received image onto the face after the concrete has been sprayed; A control function is provided to adjust and adapt the image projected onto the face to the face that is the projection target, A projection device characterized in that the control function adjusts and adapts the image projected onto the working face to the working face that is the projection target by operating actions on the touch panel screen of a touch panel type information device.

[0013] 2. The projection device according to claim 1, characterized in that the control function is configured to be able to adjust one or more of the projection position, projection size, and tilt by operating actions on the touch panel screen of a touch panel type information device.

[0014] 3. The projection device according to claim 1 or 2, characterized in that the control function is configured to be capable of adjusting either one or both of the focus and the illuminance by operating an operation action on a touch panel screen of a touch panel type information device.

[0015] 4. An image of the face after concrete spraying and the face before concrete spraying projected onto this face are displayed on the touch panel screen of the touch panel type information device, The projection device according to claim 1 or 2, characterized in that the projected image is touched on the touch panel screen, and the projected image is adjusted and adapted to the working face by the operation action of this touch operation.

[0016] 5. A projection device having a communication function, a projection function, and a control function according to claim 1 or 2; A photographing device for taking an image of the working face before concrete is sprayed; It is composed of a touch panel type information device that adjusts and adapts the image projected onto the working face by operating the touch panel screen, the photographing device and the touch panel type information device are connectable to a projection device via a communication function; This configuration makes it possible to adjust and adapt the image projected onto the working face to the working face that is the target of the projection. [Effects of the Invention]

[0017] According to the invention shown in claim 1, by operating the touch panel screen of the touch panel type information device, the projected image (an image of the working face before concrete is sprayed) can be adjusted and adapted to the working face (the working face after concrete is sprayed) that is the target of the projection through simple and intuitive operations.

[0018] The projection device of the present invention can be used with external photographing equipment (a device for photographing the face before concrete is sprayed) and with touchscreen information devices such as ordinary smartphones and tablet computers. In other words, since the smartphones and other devices used here are often carried by on-site workers, there is an advantage in that there is no need to prepare separate devices or equipment.

[0019] According to the invention shown in claim 2, the projection position, projection size or tilt can be adjusted by operating the touch panel screen of the touch panel type information device, and the projected image can be adjusted and adapted through simple and intuitive operations. In other words, by using a touch panel type information device such as a smartphone, the projection position, projection size or tilt of the projected image can be adjusted through simple and intuitive operations such as tapping, swiping or flicking on the touch panel screen.

[0020] According to the invention described in claim 3, the focus or brightness of the projected image can be adjusted by operating the touch panel screen of the touch panel type information device, and the projected image can be adjusted and adapted through simple and intuitive operations. That is, by using a touch panel type information device such as a smartphone, the focus or illuminance of the projected image can be adjusted through simple and intuitive operations such as tapping, swiping, or flicking on the touch panel screen.

[0021] According to the invention shown in claim 4, an image of the working face after concrete spraying and the working face before concrete spraying projected onto the working face are displayed on the touch panel screen of a touch panel type information device such as a smartphone, and by operating the image projected on the touch panel screen, the projected image can be adjusted and adapted to the working face through simple and intuitive operations. In other words, without having to visually inspect the working face, users can simply check the screen of a touchscreen information device such as a smartphone and adjust and adapt the projected image to the working face through simple and intuitive operations.

[0022] According to the invention shown in claim 5, a projection image adjustment system can be provided that can adjust the projection position, projection size, tilt, etc. through simple and intuitive operations when projecting an image of the working face before concrete is sprayed onto the working face after concrete has been sprayed. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a schematic diagram illustrating an embodiment of a projection device and a projection image adjustment system according to the present invention. [Figure 2] 1 is a schematic flowchart illustrating an example of a process for using a projection device and a projection image adjustment system according to the present invention. [Figure 3] A schematic diagram showing an example of an operation action using a touch panel information device (projection position) [Figure 4]A schematic diagram (projection size) showing an example of an operation action using a touch panel information device. [Figure 5] Schematic diagram showing an example of an operation action using a touch panel information device (projection angle) DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be described with reference to the accompanying drawings (Figs. 1 to 5).

[0025] The projection device 1 of the present invention (hereinafter simply referred to as the "projection device") is a device that uses projection mapping technology to project a pre-photographed image P of the face before concrete is sprayed onto the face F after concrete has been sprayed.

[0026] FIG. 1 is a schematic diagram showing one embodiment of a projection device 1 and a projection image adjustment system. The projection device 1 is installed on a drill jumbo D, and an enlarged schematic diagram of the projection device 1 is shown above. As shown in FIG. 1, the projection device 1 comprises a communication function 11, a projection function 12, a control function 13, and a power supply 14, and may also include other functions and components such as a vibration isolator 15. In addition, in this invention, the projection device 1, together with the external devices of the photographing device 2 and the touch panel type information device 3, are collectively referred to as the projection image adjustment system 4. Note that the photographing device 2 and the touch panel type information device 3 may be a single device equipped with the respective functions, as will be described in more detail below.

[0027] The communication function 11 is a function for transmitting and receiving electronic data between the projection device 1 and the photographing device 2 or the touch panel type information device 3 (reception only is also possible). There is no limitation on the communication and connection means, but examples include a wireless LAN established in the tunnel at the construction site, or a mobile communication system used for communication with mobile phones, etc. In other words, any means capable of connecting to the photographing device 2 and the touch panel type information device 3 may be used, and may be a wired communication means or a means for exchanging data using a recording medium such as a flash memory.

[0028] The projection function 12 is a function for projecting an image P onto the face F by projection mapping, and can use a projector (projector) compatible with projection mapping or equipment with equivalent functions. There are no limitations on the specific configuration of the projection function 12, and any publicly known and publicly used projector compatible with projection mapping or equipment with equivalent functions can be used without any particular restrictions.

[0029] The control function 13 controls the projection function 12 based on commands from an external device, a touch panel type information device 3, and adjusts the position, size, range, inclination, etc. of the image P projected onto the face, thereby adapting the image P to the face F, which is the target of projection. In detail, this function executes the action instructed by operating the touch panel type information device 3 on the image P projected onto the working face F by the projection function 12, and reflects changes in the projection position, projection size, tilt, etc. The operations on the touch panel type information device 3 and the effects of the image P reflected by the operations will be described later.

[0030] The power supply 14 is a component for supplying power to the electronic devices and circuits that make up the projection device 1, and any known and publicly used power supply can be used without any particular restrictions. Usually, a power supply that connects to an outlet (hardware plug connector) is used, but a power supply that uses a battery (storage battery) may also be used.

[0031] The vibration isolator 15 is a component that prevents or suppresses vibrations from the location where the projection device 1 is placed from being transmitted to the projection device 1. A tunnel excavation site is an environment where large vibrations are likely to occur due to the operation of various vehicles and equipment. In order to prevent or suppress the effects of these vibrations, the vibration isolator 15 can be attached to the bottom of the projection device 1, for example. There is no limitation on the specific configuration of the vibration isolator 15, and for example, vibration isolating rubber or a vibration isolating sheet may be used, or a vibration isolating device that utilizes air pressure or hydraulic pressure.

[0032] The photographing device 2 photographs the construction face before concrete is sprayed, and has a connection means (communication means) for transmitting and moving the photographed image data to the projection device 1. There is no limitation on the specific configuration of the photographing device 2 used here, but examples include a digital camera and a mobile phone with a camera function (such as a smartphone). In particular, it is preferable to use a photographing device with a communication function such as a smartphone, which makes it possible to easily transmit electronic data of the photographed image P of the working face before concrete is sprayed to the projection device 1.

[0033] In addition, application software for cameras or smartphones is available that can detect the tilt of the photographic device 2 when taking a photograph and automatically release the shutter, thereby taking a photograph with a well-balanced horizontal and vertical composition, and it is preferable to use these publicly known and publicly available functions.

[0034] The touch panel type information device 3 is a computer device that can be operated by touching the touch panel screen 31 with a fingertip, a dedicated pen, or the like. There are no limitations on the configuration of the touch panel type information device 3, but for example, a general smartphone or tablet computer terminal can be used. By using a general smartphone or tablet computer terminal that is owned by the worker or provided on-site, there is no need to prepare dedicated equipment, which contributes to cost reduction.

[0035] The touch panel type information device 3 is a device that allows the projection image P, which is an image of the face before concrete is sprayed, to be adjusted and adapted to the face F after concrete has been sprayed, which is the target of the projection, through simple and intuitive operations, by operating the touch panel screen.

[0036] While visually observing the working face F and the image P projected onto it, the worker can operate the touch panel screen 31 of the touch panel type information device 3 to adjust the position, size (scale), tilt, etc. of the image P projected. Detailed operation actions will be described later.

[0037] Furthermore, a configuration can also be adopted in which an image P of the working face F after concrete spraying and the working face before concrete spraying projected onto the working face are displayed on the touch panel screen 31 of the touch panel type information device 3, and a worker touches the image P displayed on the touch panel screen 31, and adjusts and adapts the projected image P to the working face F by the operation action of this touch operation. This makes it possible to apply the position, size (scale), and tilt of the image P to the working face F. In this configuration, it is necessary to transmit image and video data of the working face and the projected image P to the touch panel type information device 3. Therefore, for example, by providing a camera (not shown) in the projection device 1 or by preparing a separate camera, the image and video data of the working face and the projected image P can be transmitted to the touch panel type information device 3 in real time.

[0038] To facilitate the above adjustment and adaptation work, it is preferable to prepare dedicated application software that supports these functions. If this dedicated application software can be used to operate a commercially available smartphone or tablet computer to adjust and adapt the projected image P to the face F, there is no need to prepare dedicated equipment.

[0039] In order to reflect operational actions on the touch panel information device 3 in real time, the means of communication with the projection device 1 is preferably real-time communication using wireless LAN or other short-range wireless communication standards.

[0040] The above-mentioned photographic device 2 and touch panel type information device 3 can both be commercially available devices such as smartphones, and there is no prohibition on using the same smartphone or the like when implementing this invention, i.e., the photographic device 2 and the touch panel type information device 3 being the same device.

[0041] Next, the process of using the projection device 1 and the projection image adjustment system 4 including it to project, adjust, and adapt an image P of the face before concrete is sprayed onto the face F after concrete is sprayed will be explained with reference to Figure 2. FIG. 2 is a schematic flow chart showing an example of a process for using the projection device 1 and the projection image adjustment system 4. As shown in FIG.

[0042] (1) Shooting A worker photographs the tunnel face before concrete is sprayed using the photographing device 2. The photographing device 2 may be installed in front of the tunnel face F, and an automatic photographing method may be employed. There is no limitation on the photographing device 2 to be used, and it may be a worker's smartphone or a digital camera or the like installed on-site.

[0043] When taking photographs, it is preferable to take photographs while keeping the plane horizontal with respect to the working face F. Alternatively, photographs may be taken while ensuring the plane horizontal by using existing application software or the like. The captured image P is stored as electronic data in the photographing device 2. The image P may then be processed and corrected for purposes such as correcting the horizontal level.

[0044] (2) Sprayed concrete After the photographs are taken, concrete is sprayed onto the excavated face of the tunnel. For spraying concrete, any known and commonly used method can be used without any particular restrictions.

[0045] (3) Installation of Drill Jumbo D After the concrete has been sprayed, a drill jumbo D is installed in front of the working face F to carry out the next drilling and blasting. The configuration and installation means of the drill jumbo D to be installed can be any known and publicly used means without any particular restrictions.

[0046] (4) Installation of Projector 1 The projection devices 1 are installed in front of the working face F after concrete has been sprayed. In order to project the image P onto the entire working face F after concrete has been sprayed, it is preferable to install them in opposing positions near the center of the working face F. Furthermore, the aforementioned drill jumbo D is often installed in a position facing the center of the drill face F. Therefore, it is preferable to install the projection device 1 on the drill jumbo D (see FIG. 1). In particular, it is preferable to install it on the ceiling of the drill jumbo D's control room. It should be noted that, unless the projection device 1 is installed on a drill jumbo, the above steps (3) and (4) may be interchanged.

[0047] (5) Sending and receiving image data The electronic data of the image P captured in (1) above is transmitted to the projection device 1. Specifically, the electronic data of the image P is transmitted from the photographing device 2 in which it is stored, and the projection device 1 receives this electronic data. There is no limitation on the means for transmitting and receiving data, but it is preferable to connect both devices via wireless LAN, etc. If the photographing device 2 does not support wireless communication, data may be transmitted by connecting via a USB cable, etc., or data may be exchanged using a recording medium such as a flash memory.

[0048] (6) Projection The projection device 1 projects an image P of the construction face before concrete is sprayed onto the construction face F after concrete is sprayed. More specifically, the projection is performed using projection mapping technology. The projection is preferably performed 5 to 10 minutes before the drilling work is performed by the jumbo drill.

[0049] (7) Adjustment / adaptation After projecting image P of the face before concrete is sprayed onto face F after concrete has been sprayed, the projected image P is adjusted so that image P matches the position, size, range, etc. of face F. Specifically, the up / down and left / right positions, projection size (scale), tilt, etc. of the projected image P are adjusted. Regarding the adjustment means, a worker operates the touch panel type information device 3 while visually checking the working face F and the image P projected onto it. Specifically, the worker touches the touch panel screen 31 with a fingertip or a dedicated pen, etc., and performs operation actions such as tapping, swiping, or flicking. Specific operation actions will be described later.

[0050] In terms of adjustments, in addition to the above-mentioned vertical and horizontal position, scale (size), and tilt, it is also possible to adjust the focus of the projected image P and the illuminance (the degree of brightness of the light reaching the working face F).

[0051] As described above, by performing steps (1) to (7) above, when projecting an image of the working face before concrete is sprayed onto the working face after concrete has been sprayed, the projection position, projection size, or tilt can be adjusted by simple and intuitive operations.

[0052] Next, the relationship between the operation actions (generally simply referred to as actions or touch gestures) on the touch panel type information device 3 and the adjustment and adaptation of the image P projected onto the working face F will be explained with reference to FIGS.

[0053] Figure 3 explains the operation actions to adjust and adapt the projection position of the image P when it is not aligned (misaligned) with the working face F. 3(a) shows an operation action for lowering the projection position of image P when it is high relative to the working face F. Swiping the touch panel screen 31 downward acts on the control function 13 in the projection device 1, and the projection position of image P is moved downward by the projection function 12 in accordance with the control signal from there.

[0054] 3(b) shows an operation action for raising the projection position of image P when it is low relative to the working face F. Swiping the touch panel screen 31 upward acts on the control function 13 in the projection device 1, and the projection position of image P is moved upward by the projection function 12 in accordance with the control signal from here. 3(c) shows an operation action for freely moving image P up, down, left, right, and diagonally when the projection position of image P is not aligned with the working face F. By pressing and holding (long tapping) the touch panel screen 31, image P can be moved freely, and by swiping in the appropriate direction from this state, control function 13 in projection device 1 is acted upon, and the projection position of image P is moved freely by projection function 12 in accordance with the control signal from there. Instead of long tapping, image P may also be moved freely by simply swiping or dragging.

[0055] Figure 4 explains the operation actions to adjust and adapt the projection size of the image P when it does not match the face F. 4(a) shows an operation action for enlarging the projection size (scale) of the image P when it is small compared to the size of the working face F. By pinching out (spreading) the touch panel screen 31, the control function 13 in the projection device 1 is acted upon, and the projection size of the image P is adjusted and adapted by the projection function 12 in accordance with the control signal from there.

[0056] 4(b) shows an operation action for reducing the projection size (scale) of image P when it is large compared to the size of the working face F. Pinching in on the touch panel screen 31 acts on the control function 13 in the projection device 1, and the projection size of image P is adjusted and adapted by the projection function 12 according to the control signal from there.

[0057] Figure 5 explains the operation actions to adjust and adapt the inclination (projection angle) of the image P to the working face F when it is not aligned. As shown in Figure 5, an operation action (rotation) of touching the touch panel screen 31 with two fingers and rotating it in a circular motion acts on the control function 13 in the projection device 1, and the projection angle of the image P is changed (tilt correction) by the projection function 12 according to the control signal from there.

[0058] Although not shown, we will also explain the operational actions to adjust and adapt the image P projected onto the working face F if it is out of focus. For example, a means can be employed in which double tapping on the touch panel screen 31 acts on the control function 13 in the projection device 1, and the focus of the image P is changed by the projection function 12 in accordance with a control signal sent from there. Also, for example, a means can be employed in which a focus adjustment slider or the like is displayed on the touch panel screen 31 and the focus is changed by operating this with a fingertip or the like. Furthermore, for this focus adjustment function, publicly known and publicly available image editing software or smartphone application software may be used.

[0059] Although not shown, the operation actions for adjusting the illuminance of the image P projected onto the working face F will also be described. For example, a means for adjusting the illuminance may be employed in which a slider for adjusting the illuminance is displayed on the touch panel screen 31 and operated with a fingertip or the like. Furthermore, for the function of adjusting the illuminance, publicly known and publicly used image editing software or smartphone application software may be used.

[0060] The operation actions described above are examples, and the content of the present invention is not limited to specific operation action means. Other operation actions may be used to operate the touch panel screen 31 and adjust and adapt the image P to the working face F. [Explanation of symbols]

[0061] 1 Projection device 11 Communication Functions 12 Projection function 13 Control Functions 14 Power supply 15 Vibration isolator 2. Filming equipment 3. Touch panel information devices 31 Touch panel screen 4. Projection Image Adjustment System P Image of the face before concrete spraying F. Face after concrete spraying D Drill Jumbo Inside the T-Tunnel

Claims

1. A device that projects an image of a construction face before concrete spraying onto the construction face after concrete spraying by projection mapping, a communication function for receiving the captured image from another device; a projection function of projecting the received image onto the face after the concrete has been sprayed; A control function is provided for adjusting and adapting the image projected onto the face to the face that is the projection target, A projection device characterized in that the control function adjusts and adapts the image projected onto the working face to the working face that is the projection target by operating actions on the touch panel screen of a touch panel type information device.

2. The projection device according to claim 1, characterized in that the control function is configured to be able to adjust one or more of the projection position, projection size, and tilt by operating actions on a touch panel screen of a touch panel type information device.

3. 3. The projection device according to claim 1, wherein the control function is configured to adjust either one or both of the focus and the illuminance by operating an operation on a touch panel screen of a touch panel type information device.

4. An image of the face after concrete spraying and the face before concrete spraying projected onto the face are displayed on the touch panel screen of the touch panel type information device, A projection device as described in claim 1 or 2, characterized in that the projected image is touched on the touch panel screen, and the projected image is adjusted and adapted to the working face by the operation action caused by this touch operation.

5. a projection device having a communication function, a projection function, and a control function according to claim 1 or 2; A photographing device for taking an image of the working face before concrete is sprayed; It is made up of a touch panel type information device that adjusts and adapts the image projected onto the working face by operating the touch panel screen, the photographing device and the touch panel type information device are connectable to a projection device via a communication function; This configuration allows the projected image adjustment system to adjust and adapt the image projected onto the working face to the working face that is the target of the projection.

Images