JP7729541B2 - Construction management device and program - Google Patents

Description

This disclosure relates to a construction management device and program.

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."

JP 2020-140257 A (Claim 1)

At an equipment construction site, it is necessary to manage whether or not a management object (e.g., a sleeve) has been installed according to the design drawings. This management is performed, for example, by using a camera to capture an image of the equipment construction site that includes the management object. The captured images are managed as records, for example, as slips. However, the technology described in Patent Document 1 does not describe how to handle images that include the management object. 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.

The construction management device of the present disclosure includes 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 have been installed , including marker sleeves with markers for recognition on the planar image, by recognizing the arrangement pattern of the multiple sleeves and attribute information of the sleeves using the markers as clues on the planar image, and a superimposition display unit that superimposes the planar image and a floor plan that is a design drawing of the equipment construction site on a display device so that the 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 . Other solutions will be described later in the description for carrying out the invention.

This disclosure provides a construction management device and program that allows for easy construction management.

1 is a functional block diagram of a construction management system including a construction management device according to the present disclosure. This is an electronic whiteboard displayed on a display device. 1 is a design drawing displayed on a display device. FIG. 10 is a diagram showing marking positions on an image displayed on a display device. 10 is a diagram showing a design drawing including a planned installation position and an image including a marking position superimposed on a display device. FIG. 10 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. FIG. FIG. 10 is a diagram showing a database relating to construction results.

Below, modes for implementing the present disclosure (hereinafter referred to as "embodiments") will be described with reference to the drawings. Within the description of one embodiment below, other embodiments that are applicable to the first embodiment will also be described as appropriate. The present disclosure is not limited to the single embodiment below, and different embodiments can be combined 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 duplicate descriptions will be omitted. Furthermore, components having the same functions will be given the same names. The contents shown are merely schematic, and for the sake of illustration, the actual configuration may be changed, and some components may be omitted or modified between drawings, within the scope of not significantly impairing the effects of the present disclosure.

Figure 1 is a functional block diagram of a construction management system 1000 equipped with the 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 (Figure 6) of the facility construction site S (Figure 4) obtained by imaging with the imaging unit 57 are transmitted to the construction management device 100 via the storage unit 58 and communication unit 59.

The construction management device 100 comprises 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, mouse, microphone, or I/F (Interface) (none of which are shown), and receives input from outside. A design drawing 201 (Figure 3) is input via 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 comprises a display unit 121 and a touch panel 122.

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.

The electronic whiteboard creation unit 111 creates the electronic whiteboard 200 (Figure 2). The overlay 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 entered on the electronic whiteboard 200 during overlay display, details of which will be described later, and the overlay display can be confirmed while referring to the information entered on the electronic whiteboard 200.

Figure 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 project, inspection date, type of project, inspection content, inspection scope (location), inspection scope (object to be managed), contractor, contractor, witness, and person in charge. Input can be made, for example, by a user at the facility construction site S (Figure 4) via the input unit 103 or touch panel 122 (both shown in Figure 1). Input can also be made by voice, for example, 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, etc. are not limited to the examples shown in the figure and can be determined freely by the user (e.g., the person in charge). Furthermore, multiple templates may be created and used depending on the inspection purpose.

Figure 3 shows a design drawing 201 displayed on the display device 120. The design drawing 201 illustrates the planned installation locations 16 of the managed objects 15 (Figure 6). Although not shown, the distance from the center lines BI, BH, B08, and B09 for each planned installation location 16 is indicated on the design drawing 201. This makes it possible to identify the position coordinates of each managed object 10. The design drawing 201 may be, for example, BIM data, CAD data, PDF data, etc. Details will be described later, but the user can select, for example, using the touch panel 122, to display, for example, only the design drawing 201 alone on the display device 120.

Figure 3 also shows a screen 203 that indicates which part of the overall 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 overall design drawing 201 is being enlarged.

Returning to Figure 1, the recognition unit 112 recognizes the position of the managed objects 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 objects 10 in the obtained image 204. Note that the attribute information referred to here is determined based on the image 204, and the specific type of text information described below is extracted from the design drawing 201.

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

As shown, a large number of managed objects 10 (Figure 6) may be located at the facility construction site S (seven managed objects S1 to S7 in the illustrated example). 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 (Figure 3). Therefore, the recognition unit 112 uses 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 to recognize the corresponding managed object group 11 in the design drawing 201. This makes it easy to identify the location of the managed object 10. Note that the attribute information here refers to information that can be determined based on the image 204. For example, for a sleeve, this is at least one of the shape or size, such as diameter or height, and for a box-shaped object, this is at least one of the shape or size, such as width, depth, or height. Furthermore, attribute information related to the marking position 12 may include, for example, the text displayed when marking, and 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. In the case of the marking position 12, for example, at least one of the shape and size can be determined based on the marking 17 (described below) attached to the marking position 12.

The marking is performed, for example, by intersecting two perpendicular line segments arranged so that the center of the managed object 15 (an example of a reference point) 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 equipment construction site S in the image 204 and the above-mentioned attribute information of the managed object 10.

To facilitate recognition of the marking position 12, an image 204 can be captured with a mark 17 attached to the marking position 12 that resembles the shape and size of the managed object 15 (e.g., a ring-shaped mark, a red circle, a square, an L-shaped mark, etc.) and size of the managed object 15. As a result, as will be described in detail later, the deviation between the marking position 12 (Figure 4) and the planned installation position 16 (Figure 3) can be calculated. The image 204 shown in Figure 4 was captured with the mark 17 attached, as an example, and therefore includes the mark 17 that resembles 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, a database (not shown, for example, included in the recognition unit 112) that associates the shape and size of the installed managed object 15 with the two-dimensional code may be used to determine the shape and size of the managed object 15 based on the captured two-dimensional code. The mark 17 may be attached to the managed object 15.

In addition, by having the recognition unit 112 recognize the correspondence between the marked-out position 12 and the planned installation position 16 (Figure 3) on the design drawing 201 (Figure 3), it is possible to determine the shape, size, etc. of the managed object 15 that will actually be installed at the marked-out position 12 (Figure 6) based on the design drawing 201.

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

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

When capturing an image using the camera 50, it is preferable to capture the equipment construction site S so that it includes the reference 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 reference scale 209. This makes it easy to grasp the coordinate position, size, shape, etc. of the managed object 10 in the image 204. The reference scale 209 can be, for example, a rod with a known, predetermined length.

Returning to Figure 1, the superimposition display unit 113 superimposes on the display device 120 images 204, 207 (Figures 4, 6) of the equipment construction site S, which include the managed object 10 (Figures 4, 6), and the design drawing 201 (Figure 3) of the equipment construction site S. The superimposition display is performed to match the managed object 10 in the images 204, 207 with the planned installation position 16 (Figure 6) on the design drawing 201 that corresponds to the captured managed object 10. The provision of the superimposition display unit 113 allows 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 10 at the equipment construction site S, simplifying construction management.

The overlay display unit 113 switches between the design drawing 201 at the planning stage of the equipment construction work and a design drawing (e.g., a revised drawing, not shown, specifically, the latest drawing, for example) added after the design drawing 201 was created at the planning stage, and overlays 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 equipment construction site S is changed (revised) over the course of the equipment construction work. For example, adding a design drawing (not shown), such as a revised drawing, can be performed, for example, via the input unit 103.

The extraction unit 114 extracts from the design drawing 201 at least the character information relating to the managed object 10 from the character information contained in the design drawing 201. The character information relating to the managed object 10 includes, for example, the identification number of the managed object 10, the shape of the managed object 10, the size of the managed object 10, and the distance from the center lines BI, BH, B08, and B09 (Figure 3). Extraction can be performed using 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 to XML data.

Furthermore, if there is one piece of character information of a specific type (e.g., the shape of the managed object 10) to be linked among the character information extracted by the extraction unit 114, the superimposition display unit 113 links the character information to the managed object 10 superimposed and displayed on the display unit 120 and displays the character information on the display unit 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 superimposition display unit 113 displays a selection screen (not shown) on the display unit 120 that allows the user to select which managed object 10 to link to among the multiple managed objects 10 superimposed and displayed on the display unit 120. This makes it possible to reduce errors in linking (assigning) character information related to the managed object 10.

The calculation unit 115 calculates the deviation between the position of the managed object 10 (Figure 4) at the facility construction site S (Figure 4), determined based on an image 204 (Figure 4), such as an orthoimage, and the planned installation position 16 on the design drawing 201 (Figure 3). This enables a judgment by the judgment unit 116, which will be described later. In addition to intuitive comparisons using superimposed displays, objective comparisons based on numerical values or management criteria can be set, making it easy to select or extract managed objects 10 that deviate from management values.

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

Figure 5 shows a design drawing 201 including the planned installation location 16 and an image 204 including the marking location 12 superimposed on the display device 120. In Figure 5, the marking location 12 is shown with a solid line, and the planned installation location 16 is shown with a dashed line.

As described above, the superimposition display is performed automatically by the superimposition display unit 113 (Figure 1), and can be performed based on the calculation results by the calculation unit 115 (Figure 1), for example. That is, the superimposition 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 superimposition without any user intervention.

Specifically, the overlay display unit 113 calculates a transformation parameter, which is at least one of the enlargement/reduction magnification, rotation amount, or movement amount of the image 204, so as to minimize each calculated deviation. If all marking positions 12 are positioned according to the design drawing 201, the deviation is zero. The overlay display unit 113 may also calculate a transformation parameter, for example, to match the length of the scale 209 (Figure 4) in the image 204 to the scale of the design drawing 201, or to match the center lines BI, BH, B08, and B09 (Figure 3) between the image 204 and the design drawing 201. The overlay 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 Figure 5.

Returning to FIG. 1, the superimposition display unit 113 (FIG. 1) further displays the position of the managed object 10 at the equipment 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 (e.g., numbers) on the display device 120. This allows the position of the managed object 10 and the planned installation position 16 to be understood as text.

The displayed text information is, for example, the marking coordinates and construction coordinates shown in tables 205 and 206 (Figure 4). As described above, the superimposition display unit 113 displays a selection screen (not shown) at a predetermined time, allowing the user to select which of the multiple managed objects 10 superimposed and displayed on the display device 120 the text information should be linked to. When the user selects the managed object 10 to link with the text information, the "Marking Coordinates" item in tables 205 and 206, which indicates the coordinates of the marking position 12, for example, 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.

The judgment unit 116 judges whether the deviation calculated by the calculation unit 115 is within a predetermined range that represents the tolerance range. The superimposed display unit 113 then displays the judgment result by the judgment unit 116 on the display device 120. This makes it possible to grasp the accuracy of the position of the marking position 12 based on whether it is within the predetermined range, which is an objective indicator, and to make an objective judgment.

Figure 6 shows a design drawing 201 including the planned installation location 16, an image 204 including the marked-out location 12, and an image 207 including the actually installed managed object 15, all superimposed on the display device 120. In Figure 6, the marked-out location 12 is shown with a solid line, the planned installation location 16 is shown with a dashed line, and the actually installed managed object 15 is shown with a two-dot chain line.

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 marking position 12 (Figure 4). Image 207 is also displayed on the display device 120 in the same manner as image 204 (Figure 4).

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

As shown in FIG. 6, the superimposition display unit 113 (FIG. 1) superimposes an image 207 of the equipment construction site S, which includes the managed object 15, on the display device 120 (FIG. 1) so that the managed object 15 in the image 207 corresponds to 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.

The superimposition 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 (e.g., numbers) on the display device 120. This allows the positions of the managed object 15 and the planned installation position 16 to be understood as text.

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

The overlay display unit 113 extracts the target range of the image 207 (Figure 6) from the design drawing 201 based on the calculation results 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) over the course of the equipment construction. For example, adding a design drawing (not shown), such as a modified drawing, can be performed, for example, via the input unit 103.

The calculation unit 115 (Figure 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 intuitive comparison using the superimposed display, as well as an objective comparison based on numerical values.

The determination unit 116 (Figure 1) determines whether "Difference 2," the deviation calculated by the calculation unit 115, is within a predetermined range that represents the tolerance range. This allows the accuracy of the position of the managed object 15 to be grasped and objectively determined based on whether it is within the predetermined range, which is an objective indicator.

The superimposed display unit 113 (Figure 1) also displays the judgment results made by the judgment unit 116 (Figure 1) on the display device 120. This allows the user to easily understand whether construction has been carried out in accordance with the design drawings 201 by referring to the judgment result items.

In the illustrated example, the superimposition display unit 113 displays "Compliant" as the judgment in tables 205 and 206 when a predetermined condition is met. The predetermined condition is when the positional deviation between the position coordinates of the marking position 12 and the planned installation position 16 on the design drawing 201 ("Difference 1" shown in Figure 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 Figure 6) is within the above-mentioned predetermined range.

Returning to FIG. 1, the display switching unit 117 switches between displaying and hiding a portion 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 duties 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.

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 below, specifically, part of the items shown in Tables 205 and 206 (Figures 3 to 6).

The DB creation unit 118 creates a database 208 (Figure 7) that associates the electronic whiteboard 200 (Figure 7), the images 204, 207 (Figure 6) captured on the electronic whiteboard 200, and the positions of the images 204, 207 in the overall design drawing 201 (Figure 6). This makes it easy to identify areas that have already been constructed or measured and areas that have yet to be constructed.

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

As construction progresses, managed objects 10 (Figure 4; construction target) are actually constructed and managed at the planned installation locations 16 (Figure 3) within the same design drawing 201. This construction management device 100 has a mechanism that uses data from the same design drawing 201 to which completed construction management records have been added and overwritten. This makes it possible to see at a glance which range of managed objects 10 on the same floor have already been constructed and managed, and easily prevents forgetting to construct or not creating management records for hundreds to tens of thousands of managed objects 10.

Returning to Figure 1, the construction management device 100 is configured with, for example, a CPU (Central Processing Unit), RAM (Random Access Memory), storage media, etc., none of which are shown. Storage media include, for example, 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 implementing the construction management device 100 on a computer) stored in the storage medium is expanded, for example, into RAM and executed, for example, by the CPU, thereby realizing the construction management device 100.

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 judgment unit 116, a display switching unit 117, a DB creation unit 118, and the like. Therefore, the control program causes 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 that 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 imaged managed object 10.

The construction management device 100 allows the design drawings 201 (Figure 3) created during the planning stage to be overlaid on images 204, 207 (Figure 6) showing the construction results, 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.

In addition, construction results at each construction stage (e.g., 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 (Figure 8) can be created. 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 (Figure 7), it is possible to reduce and expedite the work required at the facility construction site S, the verification time in the office (not shown), and the time required for reporting and creating reports, while also reducing the number of input errors.

10 Managed object 100 Construction management device 1000 Construction management system 101 Communication unit 102 Image input unit 103 Input unit 104 Recording unit 105 Printing unit 11 Managed object group 110 Control unit 111 Electronic whiteboard creation unit 112 Recognition unit 113 Superimposed display unit 114 Extraction unit 115 Calculation unit 116 Judgment unit 117 Display switching unit 118 DB creation unit 12 Marking position 120 Display device 121 Display unit 122 Touch panel 15 Managed object 16 Planned installation position 17 Mark 200 Electronic whiteboard 201 Design drawing 202 Dashed frame 203 Screen 204, 207 Image 208 Database 209 Standard scale 50 Camera 57 Imaging unit 58 Storage unit 59 Communication unit

Claims (11)

A recognition unit that recognizes the position of the marker sleeve in the planar image by recognizing the arrangement pattern of the multiple sleeves and attribute information of the sleeves using the markers as clues on the 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;
a superimposition display unit that displays the planar image and a floor plan, which is a design drawing of the equipment construction site, on a display device in such a manner that the center line on the design drawing and the center line, which serves as the reference axis for the in-plane coordinate position of the marker sleeve in the planar image, overlap . The construction management device described in claim 1, characterized in that the superimposed display unit further displays the position of the marker sleeve at the equipment construction site determined based on the planar image and the planned installation position of the marker sleeve on the design drawing as text information on the display device. The construction management device according to claim 2 , further comprising a calculation unit that calculates the deviation between the position of the marker sleeve at the equipment construction site determined based on the planar image and the planned installation position on the design drawing. a determination unit that determines whether the deviation calculated by the calculation unit is within a predetermined range that represents an allowable range,
The construction management device according to claim 3 , wherein the superimposed display unit further displays the determination result by the determination unit on the display device. The construction management device according to claim 3 or 4 , wherein the superimposition display unit extracts a target range of the planar image from the design drawing based on a calculation result by the calculation unit, and adjusts the superimposition to match the design drawing. 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;
A construction management device as described in any one of claims 1 to 5, characterized in that if there are two or more specific types 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 multiple sleeves superimposed on the display device to link to. The construction management device according to any one of claims 1 to 6, characterized in that the superimposition display unit switches between the design drawings at the planning stage of the equipment construction and design drawings added after the design drawings at the planning stage were created and superimposed on the display device. The construction management device according to any one of claims 1 to 7 , further comprising a display switching unit that switches between displaying and hiding part of the information displayed on the display device. an electronic whiteboard creation unit for creating an electronic whiteboard;
The construction management device according to any one of claims 1 to 8 , wherein the superimposed display unit displays the electronic whiteboard created by the electronic whiteboard creation unit on the display device. The construction management device according to claim 9, further comprising a database creation unit that creates a database that associates the electronic whiteboard, the planar image captured corresponding to the electronic whiteboard, and the position corresponding to the planar image in the entire design drawing. 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.