Construction management device and program

Abstract

To provide a construction management apparatus capable of simply executing construction management.SOLUTION: A construction management system 1000 includes a camera 50 and a construction management apparatus 100. In the construction management apparatus 100, a control unit 110 includes a superimposition unit 113 which displays an image obtained by imaging an equipment work site so as to include a management object (e.g., sleeve), to be superimposed on a design drawing of the equipment work site on a display device, so that the management object in the image may be associated with a scheduled installation position on the design drawing corresponding to the imaged management object.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a construction management device and a program. [Background technology]

[0002] Patent document 1 describes "a construction management system that manages the construction of a construction object, comprising: a specification data storage unit that stores specification data related to the specifications of the construction object; an implementation data storage unit that stores implementation data related to the status of the construction in real space; a data generation unit that generates progress data representing the progress status of the construction based on the specification data and the implementation data; and a data output unit that outputs the progress data." [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-140257 A (Claim 1) Summary of the Invention [Problem to be solved by the invention]

[0004] At an equipment construction site, it is necessary to check whether or not managed objects (such as sleeves) have been installed according to the design drawings. This is done, for example, by using a camera to capture images of the equipment construction site, including the managed objects. The captured images are managed as records, for example, as ledger sheets. However, the technology described in Patent Document 1 does not describe how to handle images that include managed objects. With the technology described in Patent Document 1, the recorded images must be selected and checked each time, which makes construction management time-consuming. The problem that the present disclosure aims to solve is to provide a construction management device and program that enable simple construction management. [Means for solving the problem]

[0005] The construction management device of the present disclosure is A marking sleeve with a mark for recognition on a flat image Contains Multiple sleeves installed Photographed the facility construction site , the plane with a single angle of view image a recognition unit that recognizes the position of the marker sleeve in the planar image by recognizing the arrangement pattern of the plurality of sleeves and attribute information of the sleeves using the marker as a clue; Images and design drawings of the facility construction site A plan view And, The center line on the design drawing and the center line serving as a reference axis for the in-plane coordinate position of the marker sleeve in the planar image are overlapped with each other. Superimposed display unit for superimposing a display on a display device and, Other solutions will be described later in the description of the preferred embodiment of the invention. [Effects of the Invention]

[0006] According to the present disclosure, a construction management device and program that enable simple construction management can be provided. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a functional block diagram of a construction management system including a construction management device according to the present disclosure. [Figure 2] This is an electronic whiteboard displayed on a display device. [Figure 3] 1 is a design drawing displayed on a display device. [Figure 4] FIG. 10 is a diagram showing marking positions on an image displayed on a display device. [Figure 5] 10 is a diagram showing a design drawing including a planned installation position and an image including a marked-out position superimposed on a display device. FIG. [Figure 6] 1 is a diagram showing a design drawing including a planned installation position, an image including a marked-out position, and an image including an actually installed managed object superimposed on a display device. [Figure 7] FIG. 10 is a diagram showing a database relating to construction results. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, modes for carrying out the present disclosure (hereinafter referred to as "embodiments") will be described with reference to the drawings. In the following description of one embodiment, other embodiments applicable to the one embodiment will also be described as appropriate. The present disclosure is not limited to the one embodiment below, and different embodiments can be combined with each other or modified as desired without significantly impairing the effects of the present disclosure. Furthermore, the same components will be given the same reference numerals, and redundant descriptions will be omitted. Furthermore, components having the same functions will be given the same names. The contents shown are merely schematic, and for convenience of illustration, changes may be made from the actual configuration within the scope of not significantly impairing the effects of the present disclosure, and some components may be omitted or modified between drawings.

[0009] 1 is a functional block diagram of a construction management system 1000 that includes a construction management device 100 of the present disclosure. The construction management system 1000 includes a camera 50 and the construction management device 100. The camera 50 includes an imaging unit 57, a storage unit 58, and a communication unit 59. Images 204, 207 (FIG. 6) of the facility construction site S (FIG. 4) obtained by imaging with the imaging unit 57 are transmitted to the construction management device 100 via the storage unit 58 and the communication unit 59.

[0010] The construction management device 100 includes a communication unit 101, an image input unit 102, an input unit 103, a recording unit 104, a printing unit 105, a control unit 110, and a display device 120. The communication unit 101 communicates with the communication unit 59. The image input unit 102 receives images 204 and 207 from the storage unit 58. The input unit 103 is, for example, a keyboard, a mouse, a microphone, an I / F (Interface) (none of which are shown), and receives input from the outside. A design drawing 201 (FIG. 3) is input through the input unit 103. The recording unit 104 records the processing results of the control unit 110. The printing unit 105 prints the processing results of the control unit 110 (e.g., forms, etc.). The display device 120 includes a display unit 121 and a touch panel 122.

[0011] The construction management device 100 includes a control unit 110, an electronic whiteboard creation unit 111, a recognition unit 112, an overlay display unit 113, an extraction unit 114, a calculation unit 115, a judgment unit 116, a display switching unit 117, and a DB creation unit 118.

[0012] The electronic whiteboard creation unit 111 creates an electronic whiteboard 200 (FIG. 2). The superimposed display unit 113 displays the electronic whiteboard 200 created by the electronic whiteboard creation unit 111 on the display device 120. This allows the electronic whiteboard 200 to be displayed together with the information input to the electronic whiteboard 200 during superimposed display, which will be described in detail later, and allows the superimposed display to be confirmed while referring to the information input to the electronic whiteboard 200.

[0013] FIG. 2 shows an electronic whiteboard 200 displayed on the display device 120. The electronic whiteboard 200 is configured to allow input of information such as the name of the construction project, the inspection date, the type of construction project, the inspection content, the inspection scope (location), the inspection scope (object to be managed), the contractor, the contractor, the witness, and the person in charge. The input can be performed, for example, by a user at the facility construction site S (FIG. 4) via the input unit 103 or the touch panel 122 (both shown in FIG. 1). The input can also be performed by voice using a microphone (not shown), which is an example of the input unit 103. Note that the types of information that can be input, the layout of the electronic whiteboard 200, and the like are not limited to the examples shown in the figure and can be determined arbitrarily by a user (e.g., the person in charge). Furthermore, multiple templates may be created and used depending on the purpose of the inspection.

[0014] FIG. 3 shows a design drawing 201 displayed on the display device 120. The design drawing 201 illustrates the planned installation positions 16 of the managed objects 15 (FIG. 6). Although not shown, the distance from the street center lines BI, BH, B08, and B09 for each planned installation position 16 is shown on the design drawing 201. This makes it possible to identify the position coordinates of each managed object 10. The design drawing 201 is, for example, BIM data, CAD data, PDF data, etc. Although details will be described later, the user can make a selection using, for example, the touch panel 122, and thereby display, for example, only the design drawing 201 alone on the display device 120.

[0015] 3 also shows a screen 203 indicating which part of the entire design drawing 201 shown on the right side of the page corresponds to the area surrounded by a dashed frame 202 in the design drawing 201. This makes it easy to understand which part of the entire design drawing 201 is being enlarged.

[0016] Returning to Fig. 1, the recognition unit 112 recognizes the position of the managed object 10 in the image 204 captured by the camera 50 by recognizing the arrangement pattern of the multiple managed objects 10 in the image 204 and the attribute information of the managed objects 10. This makes it possible to recognize the position of the managed object 10 in the obtained image 204. Note that the attribute information referred to here is determined based on the image 204, and specific types of character information, which will be described later, are extracted from the design drawing 201.

[0017] 4 is a diagram showing the marked positions 12 on the image 204 displayed on the display device 120. The managed object 10 includes, for example, the marked positions 12 attached to the planned installation positions 16 (FIG. 3) of the managed object 15 (e.g., a sleeve, etc.) at the facility construction site S, and the managed object 15 that is actually installed at the facility construction site S. This allows the marked positions 12 and the installation positions of the managed object 15 to be compared using the display device 120.

[0018] As shown in the figure, there are cases where a large number of managed objects 10 (FIG. 6) (seven managed objects S1 to S7 in the illustrated example) are arranged at the facility construction site S. In this case, it may be unclear which managed object 10 in the image 204 corresponds to which managed object 10 in the design drawing 201 (FIG. 3). Therefore, the recognition unit 112 recognizes the corresponding managed object group 11 in the design drawing 201 using the arrangement pattern of the managed object group 11, which is a collection of multiple managed objects 10, and the attribute information of the managed objects 10 as clues. This makes it possible to easily identify the position of the managed object 10. Note that the attribute information here is information that can be determined based on the image 204, and is, for example, at least one of the shape or size, such as diameter or height, for a sleeve, or at least one of the shape or size, such as width, depth, or height, for a box. Furthermore, the attribute information related to the marking position 12 is, for example, at least one of the shape or size, such as diameter or height, of the managed object 15 to be installed at the marking position 12, or characters displayed when marking. In the case of the marked position 12, for example, at least one of the shape and size can be determined based on a mark 17 (described later) attached to the marked position 12.

[0019] The marking is performed by, for example, intersecting two perpendicular line segments arranged so that the center (an example of a reference point) of the managed object 15 is the intersecting point. Then, as will be described in detail later, the corresponding position on the design drawing 201 can be recognized based on the arrangement pattern of the marking positions 12 at the facility construction site S in the image 204 and the above attribute information of the managed object 10.

[0020] To facilitate recognition of the marking position 12, and to recognize the shape and size of the managed object 15 to be placed at the marking position 12 in an image 204, a mark 17 imitating the shape and size of the managed object 15 (for example, a ring-shaped mark, such as a red circle, a square, or an L-shaped mark) can be attached to the marking position 12 and then imaged. As a result, as will be described in detail later, the deviation between the marking position 12 ( FIG. 4 ) and the planned installation position 16 ( FIG. 3 ) can be calculated. The image 204 shown in FIG. 4 was obtained by image capture with the mark 17 attached, as an example, and therefore includes the mark 17 imitating the shape and size of the managed object 15. The mark 17 may be any symbol or a two-dimensional code such as a QR code (registered trademark). In this case, the shape and size of the managed object 15 to be installed may be recorded in the two-dimensional code. Furthermore, the shape and size of the managed object 15 may be determined based on the captured two-dimensional code using a database (not shown, for example, included in the recognition unit 112) that associates the shape and size of the managed object 15 to be installed with the two-dimensional code. The mark 17 may be attached to the managed object 15.

[0021] In addition, by recognizing the correspondence between the marking position 12 and the planned installation position 16 (FIG. 3) on the design drawing 201 (FIG. 3) using the recognition unit 112, it is possible to grasp the shape, size, etc. of the managed object 15 that will actually be installed at the marking position 12 (FIG. 6) based on the design drawing 201.

[0022] FIG. 4 illustrates an image 204 obtained using the camera 50 (FIG. 1), an electronic whiteboard 200, and tables 205 and 206. Although not shown, the electronic whiteboard 200 displays information entered by a user at the facility construction site S. The tables 205 and 206 display information extracted by the extraction unit 114 (FIG. 1). In the illustrated example, the upper table 205 displays the distance from the grid center line B08 of each marking position 12 in the design drawing 201 (FIG. 3). The lower table 206 displays the distance from the grid center line BI of each marking position 12 in the design drawing 201 (FIG. 3). In addition, the tables 205 and 206 display IDs (measurement numbers), such as serial numbers, assigned to each marking position 12.

[0023] The image 204 can be obtained by, for example, capturing a single image at a single angle of view, capturing multiple images at different angles of view, or capturing images using a stereo camera as the camera 50 (FIG. 1). The image 204 is preferably an orthoimage processed by ortho-transformation (ortho-oblique transformation) of an image actually captured. This makes it easier to compare the managed objects 10 when the orthoimage and the design drawing 201 (FIG. 3) are superimposed. In this specification, an orthoimage is exemplified as the image 204, but is not limited to an orthoimage as long as it is based on an image captured using the camera 50. In addition, the lens (not shown) used in the camera 50 can be, for example, a fisheye (panoramic) lens, a wide-angle lens, a general-angle lens, or the like, but is not limited to these.

[0024] When capturing an image using the camera 50, it is preferable to capture an image of the facility construction site S so as to include the scale 209 in addition to the managed object 10. In other words, it is preferable that the image 204 includes the managed object 10 and the scale 209. This makes it easy to grasp the coordinate position, size, shape, etc. of the managed object 10 in the image 204. As the scale 209, for example, a rod having a predetermined length with a known length can be used.

[0025] Returning to FIG. 1, the superimposition display unit 113 superimposes on the display device 120 images 204, 207 (FIGS. 4, 6) of the equipment construction site S so as to include the managed object 10 (FIGS. 4, 6) and the design drawing 201 (FIG. 3) of the equipment construction site S. The superimposition display is performed so as to match the managed object 10 in the images 204, 207 with the planned installation position 16 (FIG. 6) on the design drawing 201 that corresponds to the captured managed object 10. The provision of the superimposition display unit 113 makes it possible to intuitively compare the planned installation position 16 on the design drawing 201 with the actual installation position of the managed object 10 at the equipment construction site S on the display device 120, thereby enabling easy construction management.

[0026] The superimposition display unit 113 switches between the design drawing 201 at the planning stage of the facility construction and a design drawing (for example, a revised drawing, not shown, specifically, for example, the latest drawing) that was added after the design drawing 201 at the planning stage was created, and superimposes them on the display device 120. This makes it easy to compare what has changed on the display device 120 when the design drawing 201 created at the planning stage before construction at the facility construction site S is changed (revised) over the course of the facility construction. For example, adding a design drawing (not shown), such as a revised drawing, can be performed, for example, via the input unit 103.

[0027] The extraction unit 114 extracts from the design drawing 201 at least character information relating to the management object 10 from among the character information contained in the design drawing 201. The character information relating to the management object 10 is, for example, the identification number of the management object 10, the shape of the management object 10, the size of the management object 10, the distance from the street center lines BI, BH, B08, and B09 (FIG. 3), etc. The extraction can be performed by any method depending on the file format of the design drawing 201; for example, in the case of CAD data, the character information can be extracted by converting it into XML data.

[0028] Furthermore, if there is one piece of character information of a specific type (for example, the shape of the managed object 10) to be linked among the character information extracted by the extraction unit 114, the superimposed display unit 113 links the character information to the managed object 10 superimposed and displayed on the display device 120, and displays the character information on the display device 120. On the other hand, if there is two or more pieces of character information of a specific type to be linked among the character information extracted by the extraction unit 114, the superimposed display unit 113 displays a selection screen (not shown) on the display device 120 to allow the user to select which managed object 10 to link to among the multiple managed objects 10 superimposed and displayed on the display device 120. This makes it possible to prevent errors in linking (assigning) character information related to the managed object 10.

[0029] The calculation unit 115 calculates the deviation between the position of the managed object 10 (FIG. 4) at the facility construction site S (FIG. 4) determined based on an image 204 (FIG. 4) such as an orthoimage, and the planned installation position 16 on the design drawing 201 (FIG. 3). This enables a determination by the determination unit 116, which will be described later. In addition to intuitive comparison using superimposed display, objective comparison based on numerical values ​​or setting control standards makes it possible to easily select or extract managed objects 10 that deviate from the control values.

[0030] The position of the managed object 10 (FIG. 4) at the facility construction site S can be determined as the distance from an arbitrary reference line (for example, center line B08, BI) using the reference scale 209 (FIG. 4) in the image 204 as an index. Furthermore, the planned installation position 16 on the design drawing 201 (FIG. 3) can be determined based on text information included in the design drawing 201, for example, and specifically, can be determined as exemplified in tables 205 and 206 (FIG. 4).

[0031] 5 is a diagram showing a design drawing 201 including the planned installation position 16 and an image 204 including the marked-out position 12 superimposed on the display device 120. In FIG. 5, the marked-out position 12 is shown by a solid line, and the planned installation position 16 is shown by a dashed line.

[0032] The superimposed display is performed automatically by the superimposed display unit 113 (FIG. 1) as described above, and can be performed based on the calculation results by the calculation unit 115 (FIG. 1), for example. That is, the superimposed display unit 113 extracts the target range of the image 204 from the design drawing 201 based on the calculation results by the calculation unit 115, and adjusts the superimposition to match the design drawing 201. This allows the superimposition to be performed without any user intervention.

[0033] Specifically, the superimposition display unit 113 calculates a transformation parameter, which is at least one of the enlargement ratio, reduction ratio, rotation amount, or movement amount of the image 204, so as to minimize each of the calculated deviations. If all the marking positions 12 are arranged according to the design drawing 201, the deviation is zero. The superimposition display unit 113 may also calculate the transformation parameter, for example, so as to match the length of the scale 209 (FIG. 4) in the image 204 to the scale of the design drawing 201, or so as to match the center lines BI, BH, B08, and B09 (FIG. 3) between the image 204 and the design drawing 201. The superimposition display unit 113 then transforms the image 204 based on the calculated transformation parameters, and displays it superimposed on the design drawing 201, as shown in FIG. 5.

[0034] Returning to Fig. 1, the superimposed display unit 113 (Fig. 1) further displays the position of the managed object 10 at the facility construction site S determined based on the image 204 (Fig. 4) and the planned installation position 16 on the design drawing 201 (Fig. 3) as text information (for example, numbers) on the display device 120. This allows the position of the managed object 10 and the planned installation position 16 to be grasped as text.

[0035] The displayed character information is, for example, the marking coordinates and construction coordinates shown in tables 205 and 206 (FIG. 4). As described above, the superimposition display unit 113 displays a selection screen (not shown) at a predetermined time to allow the user to select which of the multiple managed objects 10 superimposed and displayed on the display device 120 the character information is to be linked to. When the user selects the managed object 10 to be linked to the character information, for example, the item "marking coordinates" indicating the coordinates of the marking position 12 in tables 205 and 206 is automatically entered for each managed object 10. At the same time, "difference 1", which is the deviation calculated by the calculation unit 115, is automatically entered into tables 205 and 206 for each managed object 10.

[0036] The determination unit 116 determines whether the deviation calculated by the calculation unit 115 is within a predetermined range that represents an acceptable range. The superimposed display unit 113 further displays the determination result by the determination unit 116 on the display device 120. This allows the accuracy of the position of the marking position 12 to be grasped and objectively determined based on whether it is within the predetermined range, which is an objective index.

[0037] 6 is a diagram in which a design drawing 201 including the planned installation position 16, an image 204 including the marked-out position 12, and an image 207 including the actually installed managed object 15 are superimposed on the display device 120. In FIG. 6, the marked-out position 12 is indicated by a solid line, the planned installation position 16 is indicated by a dashed line, and the actually installed managed object 15 is indicated by a two-dot chain line.

[0038] Image 207 is obtained by capturing an image of the facility construction site S including the installed managed object 10. The image can be captured in the same manner as image 204, except that the image includes the actually installed managed object 15 instead of the marked position 12 (FIG. 4). Furthermore, image 207 is displayed on display device 120 in the same manner as image 204 (FIG. 4).

[0039] For example, the recognition unit 112 (FIG. 1) recognizes the position of the managed object 15 in the image 207 by recognizing the arrangement pattern of the multiple managed objects 15 in the image 207. This makes it possible to recognize the position of the managed object 15 in the obtained image 207. Furthermore, in cases where the managed object 10 during construction (management) has multiple pieces of the same attribute information, for example, when sleeves do not form a group but exist independently, or when they are the same size and have the same arrangement, a human can intervene and specify the range to be imaged in advance, or multiple candidates can be extracted and selected by a human to specify.

[0040] As shown in Fig. 6, the superimposition display unit 113 (Fig. 1) superimposes an image 207 of the equipment construction site S including the managed object 15 on the design drawing 201 of the equipment construction site S on the display device 120 (Fig. 1) so as to correspond the managed object 15 in the image 207 with the planned installation position 16 on the design drawing 201 that corresponds to the captured managed object 15. This allows an intuitive comparison on the display device 120 between the planned installation position 16 on the design drawing 201 and the actual installation position of the managed object 15 at the equipment construction site S, enabling easy construction management.

[0041] The superimposed display unit 113 further displays the position of the managed object 15 at the equipment construction site S determined based on the image 207 and the planned installation position 16 on the design drawing 201 as text information (for example, numbers) on the display device 120. This allows the positions of the managed object 15 and the planned installation position 16 to be grasped as text.

[0042] Furthermore, if there is one piece of character information of a specific type to be linked among the character information extracted by the extraction unit 114, the superimposed display unit 113 links the character information to the managed object 15 superimposed and displayed on the display device 120, and displays the character information on the display device 120. Furthermore, if there is two or more pieces of character information of a specific type to be linked among the character information extracted by the extraction unit 114, the superimposed display unit 113 displays a selection screen (not shown) on the display device 120 to allow the user to select which managed object 15 to link to among the multiple managed objects 15 superimposed and displayed on the display device 120. This makes it possible to prevent errors in linking (assigning) character information related to the managed object 15.

[0043] The overlay display unit 113 extracts the target range of the image 207 ( FIG. 6 ) from the design drawing 201 based on the calculation result by the calculation unit 115, and adjusts the overlay to match the design drawing 201. This makes it easy to compare what has changed on the display device 120 when the design drawing 201, which was created in the planning stage before construction at the equipment construction site S, is changed (modified) during the course of the equipment construction. For example, adding a design drawing (not shown), such as a modified drawing, can be performed via the input unit 103, for example.

[0044] The calculation unit 115 (FIG. 1) calculates "difference 2," which is the deviation between the position of the managed object 15 at the facility construction site S determined based on the image 207 and the planned installation position 16 on the design drawing 201. This allows for an objective comparison based on numerical values ​​in addition to an intuitive comparison based on the superimposed display.

[0045] The determination unit 116 (FIG. 1) determines whether or not "Difference 2", which is the deviation calculated by the calculation unit 115, is within a predetermined range that indicates an acceptable range. This makes it possible to grasp the accuracy of the position of the managed object 15 based on whether it is within the predetermined range, which is an objective index, and to make an objective determination.

[0046] The superimposed display unit 113 (FIG. 1) further displays the judgment result by the judgment unit 116 (FIG. 1) on the display device 120. This allows the user to easily understand whether construction has been carried out in accordance with the design drawing 201 by referring to the judgment result items.

[0047] In the illustrated example, when a predetermined condition is satisfied, the superimposed display unit 113 displays "suitable" as the judgment in the tables 205 and 206. The predetermined condition is when the positional deviation between the position coordinates of the marked-out position 12 and the planned installation position 16 on the design drawing 201 ("difference 1" shown in FIG. 6) is within the above-mentioned predetermined range, and when the positional deviation between the position coordinates of the actual managed object 15 and the planned installation position 16 on the design drawing 201 ("difference 2" shown in FIG. 6) is within the above-mentioned predetermined range.

[0048] Returning to FIG. 1 , the display switching unit 117 switches between displaying and hiding part of the information displayed on the display device 120. This allows a portion of the information obtained by the construction management device 100 to be extracted and displayed on the display device 120 as desired, making it easier to manage the construction of the managed object 10. Furthermore, the information used for construction management may differ depending on the user and the construction stage at the facility construction site S. Specific examples include checking for human error by workers, self-management by managers (specialized contractors, construction companies, etc.), and supervision and reporting work by supervisors. Therefore, by providing the display switching unit 117, necessary information can be extracted and displayed according to each stage and user in construction management.

[0049] The information to be displayed or hidden is, for example, part of the information in at least one of the figures or items shown in Figures 2 to 6 above and Figure 7 described below, specifically, part of the items shown in Tables 205 and 206 (Figures 3 to 6).

[0050] The DB creation unit 118 creates a database 208 (FIG. 7) that associates an electronic whiteboard 200 (FIG. 7), images 204, 207 (FIG. 6) captured on the electronic whiteboard 200, and positions of the images 204, 207 in the entire design drawing 201 (FIG. 6). This makes it easy to identify areas that have already been constructed or measured and areas that have not yet been constructed.

[0051] FIG. 7 is a diagram showing a database 208 related to construction results. On the left side of FIG. 7, an electronic whiteboard 200 including the information input in FIG. 2 is shown. On the right side of FIG. 7, a screen 203 is shown showing the positions where images 204 and 207, which are construction results, are displayed within the entire design drawing 201. On the screen 203, an area surrounded by a dashed frame 202 indicates the positions in the design drawing 201 corresponding to the images 204 and 207. The user can display the construction results (for example, the screen shown in FIG. 6) in the area surrounded by the dashed frame 202 on the display device 120 by changing the screen, for example, by operating the touch panel 122 (FIG. 1).

[0052] As construction progresses, the management object 10 (Fig. 4; construction target) is actually constructed and managed at the planned installation location 16 (Fig. 3) within the same design drawing 201. The construction management device 100 in this example has a mechanism that uses data from the same design drawing 201 to which construction management records that have already been carried out have been added and overwritten. This makes it possible to see at a glance which range of management objects 10 on the same floor have already been constructed and managed, and easily prevent forgetting to construct or not creating management records for hundreds to tens of thousands of management objects 10.

[0053] Returning to Fig. 1, the construction management device 100 is configured to include, for example, a CPU (Central Processing Unit), RAM (Random Access Memory), a storage medium, etc., none of which are shown. The storage medium is, for example, a ROM (Read Only Memory), SSD (Solid State Drive), HDD (Hard Disk Drive), USB (Universal Serial Bus) memory, etc. A predetermined control program (a program for realizing the construction management device 100 on a computer) stored in the storage medium is expanded, for example, in RAM, and executed, for example, by the CPU, thereby realizing the construction management device 100.

[0054] That is, when the control program is executed, the computer functions as an electronic whiteboard creation unit 111, a recognition unit 112, a superimposition display unit 113, an extraction unit 114, a calculation unit 115, a determination unit 116, a display switching unit 117, a DB creation unit 118, etc. Therefore, the control program is a program for causing the computer to function as a superimposition display unit 113 that superimposes on the display device 120 images 204, 207 (FIGS. 4, 6) of the equipment construction site S so as to include at least the managed object 10 (FIGS. 4, 6) and a design drawing 201 (FIG. 3) of the equipment construction site S. The superimposition display by the control program is performed so as to match the managed object 10 in the images 204, 207 with the planned installation position 16 (FIG. 6) on the design drawing 201 that corresponds to the captured managed object 10.

[0055] The construction management device 100 allows the user to check the design drawings 201 (FIG. 3) created in the planning stage and the images 204, 207 (FIG. 6) showing the construction results by overlaying them, thereby reducing construction errors. Furthermore, the creation of tables 205, 206 by the construction management device 100 reduces the effort and input errors required for manual input.

[0056] In addition, construction results at each construction stage (for example, the marking stage, after actual installation, etc.) can be displayed superimposed on the design drawing 201, which is the planning stage, allowing for easy construction management. Furthermore, by recording the design drawing 201, images 204, 207, and tables 205, 206 in association with each other and displaying them superimposed, for example, a database 208 (FIG. 8) can be created. The database 208 can also be output as a report, eliminating the need to create separate reports for recording. Furthermore, by creating an electronic whiteboard 200 (FIG. 7), the time spent working at the facility construction site S, the time spent verifying in the office (not shown), and the time spent creating reports and forms can be shortened and labor-saving, and input errors can be reduced. [Explanation of symbols]

[0057] 10. Managed Objects 100 Construction management equipment 1000 Construction Management System 101 Communications Department 102 Image input unit 103 Input section 104 Recording section 105 Printing Department 11. Managed Objects 110 control section 111 Electronic Whiteboard Creation Department 112 Recognition part 113 Superimposed display section 114 Extraction part 115 Calculation Department 116 Judgment Department 117 Display switching section 118 DB creation department 12 Marking position 120 Display device 121 Display section 122 Touch Panel 15. Managed Objects 16 Planned installation location 17 Landmark 200 Electronic Whiteboard 201 Design Drawings 202 dashed frame 203 screens 204,207 images 208 databases 209 Standard standard 50 cameras 57 Imaging unit 58 Preservation Department 59 Communications Department

Claims

1. A recognition unit that recognizes the position of the marker sleeve in a planar image captured at a single angle of view of an equipment construction site where multiple sleeves are installed, including marker sleeves with markers attached for recognition on the planar image, by recognizing the arrangement pattern of the multiple sleeves and the attribute information of the sleeves using the markers as clues; and a superimposition display unit that displays the planar image and a plan view that is a design drawing of the facility construction site on a display device in such a manner that a center line on the design drawing and the center line that serves as a reference axis for the in-plane coordinate position of the marker sleeve in the planar image overlap. A construction management device characterized by:

2. The superimposed display unit further displays, on the display device, the position of the marker sleeve at the facility construction site determined based on the planar image and the planned installation position of the marker sleeve on the design drawing as character information.

2. The construction management device according to claim 1.

3. a calculation unit that calculates a deviation between the position of the marker sleeve at the facility construction site determined based on the planar image and the planned installation position on the design drawing; 3. The construction management device according to claim 2.

4. a determination unit that determines whether the deviation calculated by the calculation unit is within a predetermined range that represents an allowable range, The superimposed display unit further displays the determination result by the determination unit on the display device.

4. The construction management device according to claim 3.

5. The superimposition display unit extracts a target range of the planar image from the design drawing based on the calculation result by the calculation unit, and performs superimposition adjustment in accordance with the design drawing.

5. The construction management device according to claim 3 or 4.

6. an extraction unit that extracts from the design drawing at least character information related to the marker sleeve among character information included in the design drawing; The superimposed display unit further If there is one specific type of character information to be linked among the extracted character information, the character information is linked to the marker sleeve superimposed and displayed on the display device and displayed on the display device; If there are two or more pieces of specific type of character information to be linked among the extracted character information, a selection screen is displayed on the display device to allow the user to select which of the plurality of sleeves superimposed and displayed on the display device the character information should be linked to.

6. The construction management device according to claim 1, wherein:

7. The superimposition display unit superimposes on the display device, by switching between the design drawing at the planning stage of the facility construction and a design drawing added after the design drawing at the planning stage is created.

7. The construction management device according to claim 1, wherein:

8. a display switching unit that switches between displaying and hiding part of the information displayed on the display device; The construction management device according to any one of claims 1 to 7.

9. an electronic whiteboard creation unit for creating an electronic whiteboard; The superimposed display unit displays the electronic whiteboard created by the electronic whiteboard creation unit on the display device.

9. The construction management device according to claim 1, wherein:

10. a database creation unit that creates a database that associates the electronic whiteboard, the planar image corresponding to the electronic whiteboard at the time of image capture, and a position corresponding to the planar image in the entire design drawing; The construction management device according to claim 9 .

11. A program that causes a computer to function as a recognition unit that recognizes the position of the marker sleeve in a planar image taken at a single angle of view of an equipment construction site where multiple sleeves are installed, including marker sleeves with markers for recognition on the planar image, by using the markers as clues to recognize the arrangement pattern of the multiple sleeves and the attribute information possessed by the sleeves, and as a superimposition display unit that superimposes the planar image and a floor plan, which is a design drawing of the equipment construction site, on a display device so that the center line on the design drawing overlaps with the center line, which is the reference axis for the in-plane coordinate position of the marker sleeve in the planar image.

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