Marker installation jig

Abstract

To provide a marker installation jig which achieves high position accuracy and working efficiency during installation of a marker for allowing a display device which overlays a virtual object in a layout set according to a position of an actual space to recognize the position of the actual space.SOLUTION: A maker installation jig includes: a position collation plate (MJ2) for presenting a relative position relative to a reference line provided in a vertical direction as a position reference in a hoistway, to a worker; and a maker holding plate (MJ1) for holding a marker (M1).SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a marker installation tool that installs markers in the field of view of a worker viewing a real space including an elevator landing and hoistway, or on an image representing the real space, to enable a display device that overlays virtual objects in an arrangement corresponding to the position in the real space to recognize the position in the real space. [Background technology]

[0002] Conventionally, in construction work and the like, a method has been proposed in which information necessary for the work is displayed superimposed on real space on a display device such as smart glasses worn by a worker while the work is being carried out. For example, Patent Document 1 discloses a projection device that scans real space to recognize the spatial shape, scales drawing data to fit the real space, and maps and displays it on the real space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-163466 Summary of the Invention [Problem to be solved by the invention]

[0004] During the construction stage of a building, there may be situations where doors have not been installed between the elevator shaft and the landing. In such situations, workers are expected to wear smart glasses and perform position recognition tasks in the real world. For position recognition tasks, markers must be installed in the real world to recognize positions in the real world. Here, the installation position of the markers significantly affects the positional accuracy of the overlay display, so high positional accuracy is required. However, it is not easy to improve the installation position of the markers, and it is expected that work efficiency will decrease in order to increase accuracy.

[0005] One aspect of the present invention aims to provide a marker installation jig that has high positional accuracy and good work efficiency when a display device that overlays virtual objects in an arrangement corresponding to positions in real space installs markers to recognize positions in the real space. [Means for solving the problem]

[0006] In order to solve the above problems, the marker installation jig of the present invention is a marker installation jig that installs a marker in the field of view of a worker viewing a real space including an elevator shaft, or on an image representing the real space, so that a display device that overlays virtual objects in an arrangement according to the position of the real space can recognize the position of the real space, and is configured to include a position reference member that shows the worker the relative position with respect to a reference line that is set up vertically within the shaft as a position reference, and a marker holding member that holds the marker.

[0007] According to the above configuration, the worker can easily install the marker in an appropriate position by adjusting the position of the marker installation jig while visually checking the relative position with respect to a reference line such as a piano wire or laser light. Therefore, it is possible to provide a marker installation jig that has high positional accuracy and good work efficiency. [Effects of the Invention]

[0008] The present invention has the effect of providing a marker installation jig that has high positional accuracy of the marker and good work efficiency. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 10 is a diagram showing an example of a state in which a virtual object OB is overlaid and displayed. [Figure 2] 1 is a block diagram showing an outline of the configuration of smart glasses 1 according to an embodiment of the present invention. [Figure 3]FIG. 1 is a diagram showing a state in which smart glasses 1 are attached to a work helmet 11. [Figure 4] FIG. 2 is a perspective view showing an outline of an elevator hall 200 and a hoistway 102 to which the elevator is to be constructed. [Figure 5] 1 is a perspective view showing an outline of an opening 101 as viewed from inside a hoistway 102. FIG. [Figure 6] 1A and 1B are a plan view, a side view, and a cross-sectional view of a marker installation jig MJ. [Figure 7] FIG. 7 is a plan view showing the marker installation jig MJ shown in FIG. 6 in a state where the distance between a pair of marker holding plates MJ1 is minimized. [Figure 8] 1A and 1B are a plan view, a side view, and a cross-sectional view of a marker installation jig MJ as a first modified example. [Figure 9] 9 is a plan view showing the marker installation jig MJ shown in FIG. 8 in a state where the distance between a pair of marker holding plates MJ1 is minimized. [Figure 10] 10A and 10B are a plan view and a side view of a marker installation jig MJ serving as a modified example 2. [Figure 11] 12 is a side view showing the marker installation jig MJ shown in FIG. 11 in a folded state. [Figure 12] 3 is a flowchart showing a processing flow of an elevator installation method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, one embodiment of the present invention will be described in detail.

[0011] (Outline of smart glass application examples) 3 is a diagram showing a state in which smart glasses (display device) 1 according to this embodiment are attached to a safety helmet 11. In this embodiment, a situation is assumed in which a worker who is installing an elevator during the construction of a building wears the smart glasses 1 together with the safety helmet 11.

[0012] The smart glasses 1 are optically transparent head-mounted displays. A wearer of the smart glasses 1 can view the external real space and also view the projected image within the real space. That is, the smart glasses 1 overlay virtual objects as construction reference information for elevator construction in the field of view of a worker viewing the real space including the elevator landing and hoistway, with the objects positioned according to their position in the real space.

[0013] FIG. 1 shows an example of a state in which a virtual object OB is overlaid and displayed in real space. As shown in the figure, the virtual object OB is displayed in a space a predetermined distance away from a wall surface 300 in real space. This allows the worker to confirm in real space the position in three-dimensional space where the construction work should be performed. This eliminates the need for tasks such as measuring and confirming the position where the construction work should be performed in real space, thereby improving workability.

[0014] In this embodiment, smart glasses 1, which are optically transparent head-mounted displays, are used as the display device, but the present invention is not limited to this. For example, a video-transparent head-mounted display that displays both an image of the external real space captured by a camera and an image of a virtual object may be used. Furthermore, instead of a head-mounted display, the display device according to the present invention may be a portable information display terminal such as a tablet PC or a notebook PC, or a portable display and camera connected to an information processing device wirelessly or via a cable.

[0015] The virtual object as construction reference information is displayed based on 3D CAD data or 2D CAD data generated based on the design specifications of the construction target. This CAD data may be generated based on information of a 3D model generated as BIM (Building Information Modeling), for example. In BIM, various information such as the quantity, product number, dimensions, material, performance, and price of each part is included in the 3D model as object information, so at least one of this information may be displayed as construction reference information.

[0016] (Details of smart glasses configuration) 2 is a block diagram showing an outline of the configuration of the smart glasses 1. As shown in the figure, the smart glasses 1 include a control unit 2, a projection unit 3, an imaging unit 4, a storage unit 5, a communication unit 6, and an audio input / output unit 7. The control unit 2 is a block that performs various information processing in the smart glasses 1, and includes a display control unit 21, a position recognition unit 22, an input control unit 23, and a warning control unit 24.

[0017] The display control unit 21 controls the projection unit 3 to overlay and display a virtual object as construction reference information related to elevator construction. The projection unit 3 projects an image onto the half mirror, allowing the worker wearing the smart glasses 1 to view the projected image while viewing the external real space. The display control unit 21 makes the projected image for the right eye and the projected image for the left eye different, thereby displaying the virtual object as if it were three-dimensionally positioned at a predetermined position in real space. This allows the worker to recognize the construction position as a three-dimensional position in real space.

[0018] The display control unit 21 reads out construction reference information including three-dimensional CAD data or two-dimensional CAD data stored in the storage unit 5 and controls the display of the virtual object. Here, the three-dimensional CAD data or two-dimensional CAD data also includes information indicating a positional relationship with an object existing in real space. In addition, the display control unit 21 controls the display position of the virtual object based on the position in real space recognized by the position recognition unit 22.

[0019] The display control unit 21 may acquire construction reference information from outside via the communication unit 6. The communication unit 6 may communicate with a PC or server on a local network via a wireless LAN, or with an external server via the Internet, for example. This makes it possible to update the data stored in the storage unit 5 and acquire new data.

[0020] The position recognition unit 22 recognizes the three-dimensional position of the smart glasses 1 in real space and the three-dimensional direction in which the smart glasses 1 are facing by recognizing an image of a marker M1 (details will be described later) placed at a predetermined position in real space captured by the imaging unit 4. The position recognition unit 22 is also capable of position recognition with 6DoF (Degree of Freedom). As a result, once the worker has had the position recognition unit 22 recognize their position using the marker M1, they can view the virtual object while maintaining its relative positional relationship with real space even if they subsequently change their viewing direction or move.

[0021] The input control unit 23 is a block that receives and processes various instruction inputs from the worker. For example, an instruction input is an input to an input interface as a virtual object. That is, the display control unit 21 displays an image as the input interface as a virtual object in real space, and the instruction input from the worker is received by image recognition of the worker's virtual touch with a finger or the like.

[0022] Furthermore, for example, an instruction input from a worker may be accepted by voice input from the voice input / output unit 7. That is, the input control unit 23 recognizes the voice received by the voice input / output unit 7 and recognizes the content of the instruction from the worker, thereby accepting the instruction input from the worker.

[0023] Furthermore, an instruction input from a worker may be accepted by an external input device via the communication unit 6. For example, the communication unit 6 communicates with various input devices such as a Bluetooth (registered trademark) compatible input controller or a wireless keyboard, and an instruction input is accepted as an input by a worker to the input device.

[0024] The warning control unit 24 controls some kind of warning to be issued to the worker wearing the smart glasses 1. Examples of warning methods include projecting and displaying the warning content using an overlay display by the display control unit 21, outputting a warning sound or a voice indicating the warning content from the audio input / output unit 7, and so on.

[0025] The warning condition is that the position recognition unit 22 recognizes that the worker is located within a predetermined area near the elevator shaft. This allows a warning to be issued when there is an increased risk of the worker falling into the elevator shaft, thereby further improving the safety of the worker.

[0026] At least one function of the display control unit 21, the position recognition unit 22, the input control unit 23, and the warning control unit 24 included in the control unit 2 may be realized in an external computer via communication.

[0027] (Example of a real space where an elevator is installed) Fig. 4 is a perspective view showing an outline of an elevator hall 200 and a hoistway 102, which are the targets of elevator construction. The figure shows a state in which the elevator doors have not yet been installed, during the construction stage of a building. In this state, an opening 101 serving as an elevator entrance exists between the hall 200 and the hoistway 102. The hall 200 has a floor surface 201 and a wall surface 202.

[0028] A marker installation jig MJ is provided on the floor surface 201. Details of the marker installation jig MJ will be described later. Two markers M1 are provided on the marker installation jig MJ. As described above, the markers M1 are used by the position recognition unit 22 to recognize a position in real space by performing image recognition of the markers M1 in the captured image. Each marker M1 is made up of a quadrangular planar member, and a predetermined pattern is formed on its surface. By arranging such markers M1 at predetermined positions near the opening 101 on the floor surface 201 of the hall 200, the position recognition unit 22 can accurately recognize the positions of the hall 200 and the elevator shaft 102 in three-dimensional space.

[0029] In this embodiment, two markers are provided for each landing, but this is not limited to this, and one marker, or three or more markers may be provided. The more markers provided, the higher the accuracy of position recognition, but if two markers are provided, position recognition can be performed with sufficient accuracy.

[0030] Furthermore, in this embodiment, the markers M1 are provided on the floor surface 201, but this is not limitative, and the markers M1 may be provided on the wall surface 202. However, providing the markers M1 on the floor surface 201 is preferable for the following reasons.

[0031] For example, during the construction of a building in which an elevator will be installed, various modifications will be added to the wall surface 202 of the hall 200 from time to time, and the shape is likely to change significantly. For example, it is conceivable that initially there are no walls, and only support pillars are installed, and then at some point walls are installed. In other words, if a marker is repositioned in response to changes in the environment, the marker's position will change significantly, significantly altering the reference position for the overlay display. In this case, it becomes necessary to significantly change the marker's position in the data for the overlay display, and in some circumstances, it may become necessary to change the definition of the positional relationship between the marker and the virtual object itself. In contrast, when a marker M1 is placed on the floor surface 201, the shape of the floor surface 201 changes little during the construction of a building. Therefore, even if the height of the floor surface 201 is slightly changed, for example, due to floor beautification, and the marker M1 is repositioned, the change in the position of the marker M1 will be relatively small. Therefore, this can be addressed by fine-tuning the data for the overlay display. Details of the data adjustment process associated with changes in the position of the marker M1 will be described later.

[0032] Furthermore, in this embodiment, the marker M1 is provided at the hall 200, but the marker may be provided in the elevator shaft 102. However, providing the marker M1 at the hall 200 is preferable for the following reasons.

[0033] When performing position recognition by the position recognition unit 22, the worker wears the smart glasses 1 and captures an image of the marker using the imaging unit 4, causing the position recognition unit 22 to perform position recognition processing. Here, if the marker is installed inside the elevator shaft 102, the worker needs to approach the elevator shaft 102 to capture the image of the marker. Since the worker is wearing the smart glasses 1, his / her field of vision is somewhat limited, and it is expected that he / she will not be able to check his / her feet properly while concentrating on recognizing the marker. In other words, there is a risk of the worker falling into the elevator shaft 102. In contrast, if the marker M1 is installed at the landing 200, the marker recognition work can be performed in an area away from the opening 101 to the elevator shaft 102 at the landing 200, allowing the worker to perform safe work while reducing the risk of falling into the elevator shaft 102. Furthermore, once a door has been installed at the opening 101, which is the elevator entrance, position recognition by reading the marker can be performed in the landing space in front of the door.

[0034] Furthermore, in the middle of the construction of a building, a safety fence for preventing elevators from falling into the hoistway 102 may be placed in front of the opening 101 to the hoistway 102 at the landing 200. In this case, by providing the marker M1 on the floor surface 201 between the safety fence and the opening 101, the marker M1 is placed in an area that is difficult for people to enter, and therefore, the marker M1 can be prevented from being moved inadvertently.

[0035] The marker M1 is placed at a predetermined position on the floor surface 201, which is specified as a marker installation position in construction reference information including 3D CAD data or 2D CAD data. The installation position of this marker M1 requires high precision in order to accurately match the position in real space with the display position of the virtual object, so it is preferable to set it based on a predetermined position reference object in real space whose placement position is highly accurate. An example of the position reference object is a piano wire 103 installed in the elevator shaft 102.

[0036] FIG. 5 is a perspective view showing the opening 101 as seen from inside the elevator shaft 102. As shown in the figure, two piano wires 103, 103 are suspended from predetermined positions at the top of the elevator shaft 102 during the construction stage of a building. In other words, the piano wires 103, 103 are placed in fixed positions without being affected by the construction status of each floor. Therefore, by using this piano wire as a position reference (reference line), it is possible to maintain a high level of accuracy in the installation position of the marker M1. Note that the present invention is not limited to piano wire, and any strong wire member with a sufficiently thin diameter may be used.

[0037] Alternatively, a laser beam may be used as a position reference, for example. That is, by irradiating a laser beam vertically downward from a predetermined position in the upper part of the elevator shaft 102, or by irradiating a laser beam vertically upward from a predetermined position in the lower part of the elevator shaft 102, the laser beam can be positioned at a fixed position, similar to piano wire. However, with laser beams, the thickness of the beam tends to increase as the distance from the light source increases, so there is a possibility that errors due to the thickness of the beam may be affected depending on the height of the building. Alternatively, a reference point (architectural markings) marked on the landing of each floor may be used as a position reference.

[0038] Furthermore, multiple landings 200 will be provided for each floor for one elevator, and it is preferable to install the markers at the same location in relation to the elevator entrance / exit, i.e., at the same relative position in relation to the entrance, at each landing 200.

[0039] In many cases, all halls 200 for the same elevator have the same structural arrangement. In this case, since the marker M1 can be installed in the same location relative to the elevator entrance at each hall 200, the marker installation work can be performed using the same standard and the same work. Therefore, the marker installation work can be performed efficiently. In addition, the data for overlay display can also have a common data structure among multiple halls 200.

[0040] (Data adjustment process according to the position change of marker M1) As described above, the marker M1 is provided on the floor surface 201 of the hall 200. Here, when a building is under construction, the surface of the floor surface 201 is beautified, and it is conceivable that the marker M1 will be repositioned before and after the beautification. The height of the marker M1 will be changed before and after this beautification. Here, in many cases, the change in height of the marker M1 before and after the beautification is on the order of a few millimeters to a few centimeters. Furthermore, it is possible to prevent the horizontal position of the marker M1 from changing before and after the beautification.

[0041] If the position of the marker changes significantly, the positional relationship between the virtual object and the marker must be significantly changed in the data for overlay display.In contrast, even if marker M1 is repositioned due to floor beautification as described above, the change in the marker position is limited to the vertical direction, and the amount of change is small, so correcting the data is relatively easy.

[0042] Specifically, the input control unit 23 causes the display control unit 21 to display an interface for changing the height position of the marker M1 as a virtual object, and allows the worker to input the information. More specifically, an interface displaying input options is displayed, and the worker selects a virtual object corresponding to the height change of the marker M1 from the interface. The worker then inputs an amount of height change corresponding to the actual construction work using a virtual object such as a numeric keypad, and the input control unit 23 corrects the data indicating the positional relationship between the virtual object and the marker in response to this input. Note that, as described above, various input devices such as a wireless keyboard may communicate with the communication unit 6, allowing the worker to input the amount of height change using the input device.

[0043] (Details of the marker installation jig) Next, details of the marker installation jig MJ will be described. Fig. 6 shows the configuration of the marker installation jig MJ, where 601 is a plan view seen from a direction perpendicular to the surface of the marker M1, 602 is a side view seen from a direction parallel to the surface of the marker M1, and 603 is a cross-sectional view taken along the line A indicated by 601.

[0044] The marker installation jig MJ has a pair of marker holding plates (marker holding members) MJ1, and a marker M1 is provided on the surface of each marker holding plate MJ1. That is, the marker holding plate MJ1 has a mounting surface on which the marker M1 is placed so that the surface of the marker M1 is horizontal. Note that a plate on which the marker M1 is drawn may be attached to the mounting surface of the marker holding plate MJ1, or the marker M1 may be drawn directly on the mounting surface of the marker holding plate MJ1.

[0045] A position matching plate (position reference member) MJ2 is provided so as to extend from one side of the rectangular outline shape of the marker holding plate MJ1 in a direction perpendicular to that side. The position matching plate MJ2 has a horizontal plane perpendicular to a reference line serving as a position reference object, and a first position matching side (reference position presenting unit) MJ21 and a second position matching side (reference position presenting unit) MJ22 provided on the horizontal plane at positions facing each other at a predetermined distance from at least two directions relative to the position where the reference line is expected to be located.

[0046] The first position reference side MJ21 and the second position reference side MJ22 are perpendicular to each other, and a normal line from a mark (scribing line) provided at a predetermined position on the first position reference side MJ21 intersects with a normal line from a mark (scribing line) provided at a predetermined position on the second position reference side MJ22 at a single point. This intersection serves as the reference point where the reference line should be placed. That is, the marker installation jig MJ has a reference point provided on each of the pair of marker holding plates MJ1. By arranging the pair of marker holding plates MJ1 so that the pair of reference lines are respectively positioned at the pair of reference points, the pair of markers M1 can be accurately placed at the predetermined marker installation positions. Here, sufficient placement accuracy can be achieved by setting the distance between the first position reference side MJ21 and the reference point and the distance between the second position reference side MJ22 and the reference point to approximately 3 to 10 mm.

[0047] 6, a rectangular position matching plate MJ2 is provided so as to extend upward from one upper side of the square outline of the marker holding plate MJ1. The position matching plate MJ2 is detachably connected to the marker holding plate MJ1 with bolts.

[0048] Furthermore, the position verification plate MJ2 is formed with a protruding portion that protrudes perpendicularly from the outer left-right side of the rectangular position verification plate MJ2, and a first position verification side MJ21 is provided on the upper side of the protruding portion. Furthermore, a second position verification side MJ22 is provided on the outer left-right side of the position verification plate MJ2 above the protruding portion. That is, in Fig. 6, the first position verification side MJ21 is provided below the reference point, and the second position verification side MJ22 is provided on the inner left-right side of the reference point.

[0049] The shape of the position verification plate MJ2 for providing the first position verification side MJ21 and the second position verification side MJ22 is not limited to the shape shown in Fig. 6, and may be any shape as long as a normal line from the mark on the first position verification side MJ21 and a normal line from the mark on the second position verification side MJ22 intersect at a single reference point. For example, the position verification plate MJ2 in Fig. 6 may have a curved upper end so that the first position verification side MJ21 is positioned above the reference point. Furthermore, the second position verification side MJ22 may be provided at the tip of a portion protruding from the position verification plate MJ2.

[0050] The shape of the position matching plate MJ2 is not limited to the shape shown in FIG. 6 , and may be changed as appropriate depending on the relationship between the position where the marker M1 is to be placed and the position of the position reference object. Furthermore, the position matching plate MJ2 may be configured so that the relative positions of the first position matching side MJ21 and the second position matching side MJ22 and the marker M1 can be changed. Examples of a configuration that allows the relative positions to be changed include a configuration in which the length of the position matching plate MJ2 is changeable, or a configuration in which at least one of the connection position and connection direction between the position matching plate MJ2 and the marker holding plate MJ1 is changeable. In this case, a marker installation jig MJ that can be used in various work sites can be provided.

[0051] The pair of marker holding plates MJ1 are connected to each other by a connecting member (distance adjustment member) MJ3, an intermediate member (distance adjustment member) MJ4, and an axis member MJ5. An intermediate member MJ4 is disposed between the pair of marker holding plates MJ1, and each is connected by the connecting member MJ3. The connecting member MJ3 is also structured to be able to change the distance between the marker holding plate MJ1 and the intermediate member MJ4. In other words, the connecting member MJ3 makes it possible to change the distance between the pair of marker holding plates MJ1 and the distance between the pair of position verification plates MJ2. This makes it possible to provide a marker installation jig MJ that can be used in a variety of work sites.

[0052] In the configuration shown in FIG. 6 , the marker holding plate MJ1 and the position matching plate MJ2 are fixed, so the distance between the pair of marker holding plates MJ1 and the distance between the pair of position matching plates MJ2 change in conjunction with each other. In contrast, if at least one of the connection position and connection direction between the position matching plate MJ2 and the marker holding plate MJ1 is changeable, as described above, the distance between the pair of marker holding plates MJ1 and the distance between the pair of position matching plates MJ2 can be adjusted individually. In this case, the pair of position matching plates MJ2 can be positioned according to the positions of a pair of piano wires serving as position reference objects, for example, and the pair of marker holding plates MJ1 can be positioned in optimal positions according to the design specifications of the elevator shaft and landing.

[0053] In the example shown in Figure 6, the left-side marker holding plate MJ1 is connected to the intermediate member MJ4 by two linearly extending connecting members MJ3, and the right-side marker holding plate MJ1 is connected to the intermediate member MJ4 by two connecting members MJ3.

[0054] The intermediate member MJ4 is elongated in the vertical direction and has a hollow portion MJ6 that extends linearly in the vertical direction. Another hollow portion MJ6 that extends linearly in the vertical direction is also provided near the inner side surface of the marker holding plate MJ1.

[0055] Of the two connecting members MJ3, the end of one connecting member MJ3 on the marker holding plate MJ1 side is rotatably held at a fixed position by the marker holding plate MJ1, and the end on the intermediate member MJ4 side is held slidably along a hollow portion MJ6 provided in the intermediate member MJ4. Similarly, the end of the other connecting member MJ3 on the marker holding plate MJ1 side is rotatably held at a fixed position by the intermediate member MJ4, and the end on the marker holding plate MJ1 side is held slidably along the hollow portion MJ6 provided in the marker holding plate MJ1.

[0056] The position where the end of one connecting member MJ3 on the marker retention plate MJ1 side is held and the position where the end of the other connecting member MJ3 on the intermediate member MJ4 side is held are located on the same straight line in the direction in which the distance between the marker retention plate MJ1 and the intermediate member MJ4 is changed (the left-right direction in FIG. 6). Furthermore, both ends of the hollow portion MJ6 provided in the intermediate member MJ4 and both ends of the hollow portion MJ6 provided in the marker retention plate MJ1 are located on the same straight line in the direction in which the distance between the marker retention plate MJ1 and the intermediate member MJ4 is changed (the left-right direction in FIG. 6), at corresponding ends. In other words, one connecting member MJ3 and the other connecting member MJ3 connect the marker retention plate MJ1 and the intermediate member MJ4 in a crossed state.

[0057] This structure makes it possible to change the distance between the marker holding plate MJ1 and the intermediate member MJ4. Furthermore, even if the distance between the marker holding plate MJ1 and the intermediate member MJ4 is changed, the in-plane orientation (orientation in the horizontal plane) of the pair of markers M1 can be kept constant.

[0058] In addition, the end of the connecting member MJ3 held in the hollow portion MJ6 can be fixed in position using bolts and nuts, etc., and by fixing the position, the distance between the marker holding plate MJ1 and the intermediate member MJ4 can be fixed.

[0059] The shaft member MJ5 is fixed to the intermediate member MJ4, and is disposed with a cylindrical rod extending toward the pair of marker holding plates MJ1. As shown by 602 and 603 in Figure 6, the shaft member MJ5 is held at a position a predetermined distance below the lower surface of the intermediate member MJ4.

[0060] The marker holding plate MJ1 holds the shaft member MJ5 in a slidable state. That is, the marker holding plate MJ1 moves while being guided by the shaft member MJ5 in accordance with changes in the distance between the marker holding plate MJ1 and the intermediate member MJ4. This makes it possible to keep the normal direction of the surfaces of the pair of markers M1 constant even if the distance between the marker holding plate MJ1 and the intermediate member MJ4 changes. In other words, it is possible to keep the surfaces of the pair of markers M1 parallel to each other even if the distance between the marker holding plate MJ1 and the intermediate member MJ4 changes.

[0061] Each marker holding plate MJ1 is provided with three bolts (height adjustment members) MJ7. The bolts MJ7 are provided so that their axial direction is perpendicular to the surface of the marker holding plate MJ1, and they pass through the marker holding plate MJ1. By rotating the bolts MJ7, the amount by which they protrude from the marker holding plate MJ1 toward the floor can be changed. In other words, by adjusting the amount by which the three bolts MJ7 protrude toward the floor, it is possible to adjust the distance and inclination of the marker holding plate MJ1 relative to the floor.

[0062] As a result, even if the floor height is changed due to floor beautification processing as described above, the height position of the marker M1 can be kept constant by adjusting the amount that the three bolts MJ7 protrude toward the floor. Therefore, the positional accuracy of the overlay display can be maintained high without the need to adjust the position of the overlay display. Furthermore, because one marker holding plate MJ1 is supported on the floor by three bolts MJ7, the three-point support allows the marker M1 to be placed without any rattle.

[0063] The bolts MJ7 may function as anchor bolts (fixing members) for the floor surface. This allows the marker installation jig MJ to be fixed in a predetermined location, preventing it from being displaced from the position where it is placed according to the reference line due to some kind of disturbance. As a fixing member for the marker installation jig MJ, an engaging member that engages with a predetermined member on the floor surface to fix the position may be provided on the marker installation jig MJ. An example of the predetermined member on the floor surface is a recessed portion in the threshold where the elevator door is installed. For simplicity, the marker installation jig MJ may be fixed to the floor surface by affixing it with tape.

[0064] 7 shows the marker installation jig MJ shown in FIG. 6 in a state where the distance between a pair of marker holding plates MJ1 is minimized. In this state, the left-side marker holding plate MJ1 and the intermediate member MJ4 are in contact, and the right-side marker holding plate MJ1 and the intermediate member MJ4 are also in contact. Furthermore, when viewed from a direction perpendicular to the surface of the marker holding plate MJ1, the position matching plate MJ2 is attached to the marker holding plate MJ1 so that it is positioned inside the marker holding plate MJ1. As described above, the position matching plate MJ2 is connected to the marker holding plate MJ1 with bolts, and by removing the bolts and changing the attachment orientation, it is possible to switch between a state in which the position matching plate MJ2 protrudes outward and a state in which it is retracted inside.

[0065] In this way, the marker installation jig MJ has a structure that allows it to be folded compactly, which reduces the storage space required when transporting it to the site or when storing it when not in use.

[0066] (Modification 1 of the marker installation jig) 8 shows modified example 1 of the marker installation jig MJ, where 801 is a plan view seen from a direction perpendicular to the surface of the marker M1, 802 is a side view seen from a direction parallel to the surface of the marker M1, and 803 is a cross-sectional view taken along the line B indicated by 801. This modified example 1 differs from the configuration shown in Fig. 6 in the configuration for connecting the pair of marker holding plates MJ1, but the configurations of the marker holding plates MJ1 and the position matching plate MJ2 are the same.

[0067] In Modification 1, the pair of marker holding plates MJ1 are connected to each other by two connecting shafts (distance adjustment members) MJ8. The pair of marker holding plates MJ1 can each move along the two connecting shafts MJ8, which makes it possible to change the distance between the pair of marker holding plates MJ1 and the distance between the pair of position verification plates MJ2. This makes it possible to provide a marker installation jig MJ that can be used in a variety of work sites.

[0068] The connecting shaft MJ8 is a cylindrical rod that is arranged in a direction parallel to the direction of movement of the marker holding plate MJ1. As shown by 802 and 803 in Figure 8, the connecting shaft MJ8 is held at a position a predetermined distance above the upper surface of the marker holding plate MJ1.

[0069] In the marker holding plate MJ1, the connecting shaft MJ8 is held in a slidable state while the direction of the connecting shaft MJ8 is fixed. That is, the marker holding plate MJ1 moves while being guided by the two connecting shafts MJ8 in accordance with changes in the distance between the pair of marker holding plates MJ1. This makes it possible to keep the normal direction of the surfaces of the pair of markers M1 constant even if the distance between the pair of marker holding plates MJ1 changes. In other words, it is possible to keep the surfaces of the pair of markers M1 parallel to each other even if the distance between the marker holding plate MJ1 and the intermediate member MJ4 changes. Furthermore, the in-plane orientation of the pair of markers M1 (orientation in the horizontal plane) can also be kept constant.

[0070] The portion of the marker holding plate MJ1 that holds the connecting shaft MJ8 can be fixed in position by pressing the connecting shaft MJ8 with a bolt. By fixing the positions in this way, it is possible to fix the distance between the pair of marker holding plates MJ1.

[0071] Figure 9 shows the marker installation jig MJ shown in Figure 8 in a state where the distance between a pair of marker holding plates MJ1 is minimized. In this state, the left marker holding plate MJ1 and the right marker holding plate MJ1 are in contact. In addition, the position verification plate MJ2 is attached to the marker holding plate MJ1 so that it is located inside the marker holding plate MJ1 when viewed from a direction perpendicular to the surface of the marker holding plate MJ1.

[0072] In this way, even in variant example 1, the marker installation jig MJ has a structure that allows it to be folded compactly, thereby reducing the storage space required when transporting it to the site or storing it when not in use.

[0073] (Variation 2 of the marker installation jig) 10 shows a second modified example of the marker installation jig MJ, in which 1001 is a plan view seen from a direction perpendicular to the surface of the marker M1 and 1002 is a side view seen from a direction parallel to the surface of the marker M1. This second modified example differs from the configuration shown in Fig. 6 in the configuration for connecting the pair of marker holding plates MJ1, but the configurations of the marker holding plates MJ1 and the position matching plate MJ2 are the same.

[0074] In Modification 2, a pair of marker holding plates MJ1 are connected to each other via two connecting plates MJ9. The marker holding plate MJ1 is connected to the connecting plate MJ9 via a first hinge MJ10. The two connecting plates MJ9 are also connected to each other via a second hinge MJ11.

[0075] Reference numeral 1101 in FIG. 11 shows a side view of the marker holding plate MJ1 folded about the first hinge MJ10, as viewed in a direction parallel to the surface of the marker M1. As shown in the figure, the marker holding plate MJ1 is folded about the first hinge MJ10 so that the top surface of the marker holding plate MJ1 faces the top surface of the connecting plate MJ9. Reference numeral 1102 in FIG. 11 shows a side view of the marker holding plate MJ1 further folded about the second hinge MJ11 from the state shown in 1101, as viewed in a direction parallel to the surface of the marker M1. As shown in the figure, the marker holding plate MJ1 is folded about the second hinge MJ11 so that the surfaces of the marker holding plate MJ1 from which the bolt MJ7 protrudes face each other.

[0076] As such, in variant 2, the marker installation jig MJ has a structure that allows it to be folded up very compactly, thereby reducing the storage space required when transporting it to the site or storing it when not in use.

[0077] 10, the mounting position of the position matching plate MJ2 relative to the marker holding plate MJ1 may be changeable, for example, by a sliding mechanism. In this case, the distance between a pair of position matching plates MJ2 can be changed. Alternatively, a bellows structure may be formed by connecting multiple connecting plates with hinges, thereby changing the distance between the markers M1 and the distance between the position matching plates MJ2. In this structure, if each hinge can be individually fixed, it is possible to fix the distance between the markers M1 and the distance between the position matching plates MJ2 in a fixed state.

[0078] (Elevator installation method processing flow) Next, the process flow of the elevator installation method according to this embodiment will be described with reference to Fig. 12. When elevator installation is started, first in step 1 (hereinafter referred to as S1), a marker installation jig MJ provided with a marker M1 is installed at a predetermined position in the landing 200. At this time, as described above, the marker installation jig MJ is installed using a position reference object such as the piano wire 103 as a reference.

[0079] Next, in S2, the worker wears the smart glasses 1, captures an image of the marker with the imaging unit 4, and causes the position recognition unit 22 to perform position recognition processing. Once position recognition is complete, in S3, the display control unit 21 overlays a virtual object. Once the worker has used the marker M1 to cause the position recognition unit 22 to recognize the position, the worker can visually recognize the virtual object while maintaining its relative positional relationship with the real space, even if the worker subsequently changes his or her viewing direction or moves. In this state, in S4, the worker performs construction work while checking the construction reference information overlaid by the display control unit 21. Note that construction work includes not only the actual construction work but also check work after the construction work has been completed. Then, in S5, the completion of the construction work is confirmed. If S5 returns No, meaning that the construction work is continuing, the processing from S3 is repeated. If S5 returns Yes, meaning that the construction work has been completed, the processing ends.

[0080] The above construction method and smart glasses 1 enable elevator construction to be carried out safely and efficiently. Such effects will also contribute to the achievement of Goal 11.c of the Sustainable Development Goals (SDGs) advocated by the United Nations, which states, "Support the development of sustainable and resilient buildings using local materials in least developed countries, including through financial and technical assistance."

[0081] [Software implementation example] The functions of the smart glasses 1 (hereinafter referred to as the "device") can be realized by a program that causes a computer to function as the device, and a program that causes a computer to function as each control block of the device (particularly each part included in the control unit 2).

[0082] In this case, the device includes a computer having at least one control device (e.g., a processor) and at least one storage device (e.g., a memory) as hardware for executing the program. The control device and storage device execute the program, thereby realizing the functions described in each of the above embodiments.

[0083] The program may be non-transitory and may be recorded on one or more computer-readable recording media. The recording media may or may not be included in the device. In the latter case, the program may be supplied to the device via any wired or wireless transmission medium.

[0084] Furthermore, some or all of the functions of the control blocks can be realized by logic circuits. For example, an integrated circuit in which a logic circuit that functions as each of the control blocks is formed is also included in the scope of the present invention. In addition, the functions of the control blocks can also be realized by, for example, a quantum computer.

[0085] Furthermore, each process described in each of the above embodiments may be executed by AI (Artificial Intelligence). In this case, the AI ​​may run on the control device or on another device (for example, an edge computer or a cloud server).

[0086] (summary) The marker installation jig according to aspect 1 of the present invention is a marker installation jig that installs a marker in the field of view of a worker viewing a real space including an elevator shaft, or in a display device that overlays virtual objects onto an image representing the real space in an arrangement that corresponds to the position of the real space, so that the position of the real space can be recognized.The marker installation jig is configured to include a position reference member that shows the worker the relative position with respect to a reference line that is set up vertically within the shaft as a position reference, and a marker holding member that holds the marker.

[0087] According to the above configuration, the worker can easily install the marker in an appropriate position by adjusting the position of the marker installation jig while visually checking the relative position with respect to a reference line such as a piano wire or laser light. Therefore, it is possible to provide a marker installation jig that has high positional accuracy and good work efficiency.

[0088] A marker installation jig according to aspect 2 of the present invention may be configured such that, in aspect 1 above, the position reference member includes a horizontal plane perpendicular to the reference line, and a reference position presenting unit that is provided on the horizontal plane and positioned opposite the position where the reference line is expected to be positioned at a predetermined distance from at least two directions.

[0089] According to the above configuration, the worker can check the relative position between the reference position presenting unit installed on the horizontal surface and the reference line from two directions, making it easy to install the marker in the appropriate position.

[0090] A marker installation jig according to a third aspect of the present invention may be configured in the above-mentioned first aspect such that two position reference members are provided corresponding to the two reference lines, respectively.

[0091] According to the above configuration, the position relative to the reference line is determined at two locations, so that the marker can be more reliably placed at a predetermined position.

[0092] The marker installation jig according to a fourth aspect of the present invention may be configured in accordance with the third aspect above, further comprising a distance adjustment member for adjusting the distance between the two position reference members.

[0093] With the above configuration, the distance between the position reference members can be adjusted to match the distance between two reference lines provided in the hoistway to be worked on, thereby providing a marker installation jig that can be used for hoistways with a variety of design specifications.

[0094] A marker installation jig according to aspect 5 of the present invention may be configured such that, in aspect 1 above, the marker holding member has a mounting surface on which the marker is placed so that the surface of the marker is horizontal, and the marker holding member is provided in two locations.

[0095] According to the above configuration, since markers are provided in two locations, there are two reference locations for the position of the overlay display, and the overlay display position can be set more accurately.

[0096] Furthermore, since the marker is placed on a horizontal surface, it can be placed on the floor of an elevator hall, for example. Here, for example, during the construction stage of a building in which an elevator will be installed, various modifications will be added to the walls of the hall from time to time, and there is a high possibility that the shape will change significantly. In contrast, since the shape of the floor changes little during the construction stage of a building, even if the height is slightly changed, for example, due to floor beautification processing, and the marker is re-installed, the change in the position of the marker will be relatively small. Therefore, the amount of various adjustments required to accommodate changes in the position of the marker can be reduced.

[0097] A marker installation jig according to aspect 6 of the present invention may be configured such that, in aspect 5 above, the marker holding member is provided with a height adjustment member for changing the height of the placement surface from the surface on which the marker holding member is placed.

[0098] With this configuration, even if the height of a building is changed during construction, for example, due to floor beautification, the height adjustment member can keep the height position of the marker constant before and after the change. Therefore, the position of the overlay display on the display device does not need to be adjusted, and high positional accuracy of the overlay display can be maintained.

[0099] A marker installation jig according to a seventh aspect of the present invention may be configured in accordance with the first aspect above, further comprising a fixing member that fixes the placement position of the marker installation jig in the real space.

[0100] According to the above configuration, the marker installation jig is fixed and placed in a predetermined location, so that it can be prevented from being displaced from the position where it is placed according to the reference line due to some kind of disturbance.

[0101] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0102] 1. Smart glasses (display device) 2. Control section 3 Projection section 4. Imaging unit 5 Storage section 6. Communications Department 7 Audio input / output section 11 Safety helmet 21 Display control unit 22 Position recognition part 23 Input control section 24 Warning control section 101 Opening 102 Elevator 103, 103·103 Piano wire Platform 200 201 Floor 202, 300 walls M1 marker MJ marker installation jig MJ1 Marker holder MJ2 Position Reference Plate (Position Reference Component) MJ21 First position matching edge (reference position presentation part) MJ22 Second position matching edge (reference position presentation part) MJ3 connecting member (distance adjustment member) MJ4 intermediate member (distance adjustment member) MJ5 shaft member MJ6 hollow part MJ7 bolt MJ8 connecting shaft (distance adjustment member) MJ9 connection plate MJ10 1st hinge MJ11 2nd hinge

Claims

1. A marker setting tool for setting a marker so that a display device that overlays a virtual object in an arrangement according to a position in the real space on a field of view of a worker viewing a real space including an elevator shaft or on an image representing the real space can recognize a position in the real space, a position reference member that indicates to the worker a relative position with respect to a reference line that is provided in the vertical direction as a position reference within the elevator shaft; A marker installation jig comprising: a marker holding member for holding the marker.

2. The marker installation jig described in claim 1, wherein the position reference member comprises a horizontal plane perpendicular to the reference line, and a reference position presenting unit provided on the horizontal plane and positioned opposite the position where the reference line is expected to be positioned at a predetermined distance from at least two directions.

3. The marker installation jig according to claim 1 , wherein two of the position reference members are provided corresponding to the two reference lines, respectively.

4. The marker installation jig according to claim 3 , further comprising a distance adjustment member that adjusts the distance between the two position reference members.

5. The marker installation jig according to claim 1 , wherein the marker holding member has a mounting surface on which the marker is mounted so that the surface of the marker is horizontal, and the marker holding member is provided in two locations.

6. The marker installation jig according to claim 5 , wherein the marker holding member is provided with a height adjustment member for changing the height of the placement surface from a surface on which the marker holding member is placed.

7. The marker installation jig according to claim 1 , further comprising a fixing member that fixes the placement position of the marker installation jig in the real space.

Images