Construction support device and construction support system

Abstract

To enable construction workers to easily grasp their own positions at a construction site of a structure.SOLUTION: A construction support device that is operated by a user and supports the construction of a structure includes: a map information data acquisition unit that acquires map information data including longitude and latitude information for each point and available on a network; a drawing data acquisition unit that acquires grid line data that indicates the position of a grid line of the structure in a two-dimensional drawing of the structure; and a composite map generation unit that generates a composite map available on the network by overlaying the grid line data on the position of the grid line of the structure on the map information data.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a construction support device and a construction support system. [Background technology]

[0002] There is known a construction support device that supports the construction of structures such as buildings and civil engineering structures. A construction management system has been disclosed that allows a manager of a civil engineering construction site to grasp the work situation in detail by displaying display data with position information of heavy machinery, transport machinery, and workers on a composite map made by pasting a map and a construction plan on a work terminal (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-56214 A Summary of the Invention [Problem to be solved by the invention]

[0004] At a construction site of a structure, it may be difficult for a worker to grasp his / her own position. At the construction site, for example, a temporary fence around the perimeter of the construction site is used to set up a sign indicating the position of the center of the structure to be constructed, but it is difficult to check the contents written on the sign from a position away from the temporary fence. In the above construction management system, the worker himself / herself cannot grasp the position information displayed on the composite map, so the efficiency of the worker's work is not improved.

[0005] This specification discloses a technique that can solve the above-mentioned problems. [Means for solving the problem]

[0006] The technology disclosed in this specification can be realized, for example, in the following forms.

[0007] (1) The construction support device disclosed in this specification is a construction support device that is operated by a user and supports the construction of a structure, and includes a map information data acquisition unit that acquires map information data including longitude and latitude information of each point and that is available on a network, a drawing data acquisition unit that acquires grid line data that represents the position of the grid line of the structure in a two-dimensional drawing of the structure, and a composite map generation unit that generates a composite map that is available on the network by overlaying the grid line data on the position of the grid line of the structure on the map information data.

[0008] According to the construction support device, a composite map available on a network can be generated by overlaying grid data on map information data. Therefore, other users, such as construction workers of a structure, can easily grasp their own position at the construction site of the structure by acquiring the composite map from the network using a terminal device they own. In addition, since the composite map can be used on a network, users, such as construction managers of a structure, do not need to build their own system, and the cost of construction support can be reduced.

[0009] (2) In the above construction support device, the drawing data acquisition unit may acquire pile data representing the positions of the piles of the structure in the two-dimensional drawing of the structure, and the composite map generation unit may generate the composite map by overlaying the pile data on the positions of the piles of the structure on the map information data. According to this construction support device, a composite map can be generated in which the grid line data and the pile data are overlaid on the map information data, so that other users can more easily grasp their own positions in the construction site of the structure.

[0010] (3) In the above construction support device, the drawing data acquisition unit may be configured not to acquire data representing the contour line of the structure in the two-dimensional drawing of the structure. According to this construction support device, the information of the structure acquired by the drawing data acquisition unit is limited to information necessary for other users to understand their own positions, such as grid line data and pile data, and does not include information related to the contour line of the structure. Therefore, even if the composite map is viewed by a third party, it is possible to prevent the third party from understanding information about the construction work (for example, the type of structure, etc.).

[0011] (4) The construction support device may further include a sharing instruction unit that instructs the user to share the composite map with a terminal device of another user designated by the user. According to this construction support device, the composite map is shared with the terminal device of another user designated by the user, so that it is possible to restrict the map from being viewed by a third party.

[0012] (5) In the above construction support device, the sharing instruction unit may be configured to generate a URL indicating the location of the composite map on the network and transmit the URL to the terminal device of the other user designated by the user. According to this construction support device, since the URL indicating the location of the composite map is transmitted to the terminal device of the other user designated by the user, the composite map can be shared only with people who need the composite map.

[0013] (6) In the above construction support device, the sharing instruction unit may generate a two-dimensional code by converting the URL. According to this construction support device, a user presents a two-dimensional code to other users authorized by the user, and the other users can easily obtain a composite map using the presented two-dimensional code, so that the composite map can be efficiently shared with only those who need it.

[0014] (7) In the above construction support device, the grid line data and the pile data may include the latitude and longitude information, and the composite map generating unit may generate the composite map based on the latitude and longitude information included in the map information data, the grid line data, and the pile data. According to this construction support device, a more accurate composite map can be generated by superimposing the map information data, the grid line data, and the pile data based on the latitude and longitude information.

[0015] (8) The construction support system disclosed in this specification is a construction support system that supports the construction of a structure, and includes a construction support device operated by a user and a terminal device operated by another user. The construction support device includes a construction support device side communication unit that communicates with a network, a map information data acquisition unit that acquires map information data including latitude and longitude information of each point and available on the network, a drawing data acquisition unit that acquires grid data representing the position of the grid of the structure in a two-dimensional drawing of the structure, and a composite map generation unit that generates a composite map available on the network by superimposing the grid data on the position of the grid of the structure on the map information data. The terminal device includes a terminal device side communication unit that communicates with the network, a composite map acquisition unit that acquires the composite map via the terminal device side communication unit, a satellite signal receiving unit that acquires position information of the terminal device by receiving a signal from a global positioning satellite system, and a display control unit that displays the composite map and the position of the terminal device on the composite map.

[0016] According to this construction support system, a user, such as a construction manager of a structure, can use the construction support device to overlay grid data on map information data to generate a composite map that can be used on a network. Therefore, other users, such as construction workers of the structure, can easily grasp their own position at the construction site of the structure by using a terminal device to obtain the composite map from the network. In addition, since the composite map can be used on the network, users do not need to build their own system, and the costs related to construction support can be reduced.

[0017] (9) In the above construction support system, the construction support device may further have a sharing instruction unit that generates a URL indicating the location of the composite map on the network and generates a two-dimensional code converted from the URL, and the terminal device may further have a photographing unit that reads the two-dimensional code. According to this construction support system, a user presents a two-dimensional code only to other users authorized by the user, and the other users can easily obtain the composite map using the presented two-dimensional code, so that the composite map can be efficiently shared only with those who need it. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is an explanatory diagram showing a schematic configuration of a construction support system 10 according to an embodiment of the present invention. [Diagram 2] A block diagram showing the configuration of a construction support system 10 according to the present embodiment. [Diagram 3] A flowchart showing construction support processing in this embodiment. [Figure 4] An explanatory diagram showing an example of a composite map commercial [Diagram 5] An explanatory diagram showing an enlarged portion of the composite map CM (part X1 in Figure 4). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] A. Embodiment: A-1. Configuration of the construction support system 10: FIG. 1 is an explanatory diagram showing a schematic configuration of the construction support system 10 in this embodiment. FIG. 2 is a block diagram showing the configuration of the construction support system 10 in this embodiment. The construction support system 10 is for supporting the construction of structures such as buildings and civil engineering structures. Specifically, the construction manager of the structure uses the construction support device 100 to overlay map information data and drawing data of the structure to be constructed to generate a composite map available on a network, and shares the composite map with the terminal device 200, so that the construction worker of the structure can easily grasp his / her own position information. In this embodiment, the structure to be constructed is a structure CS. The construction support system 10 includes the construction support device 100, the terminal device 200, and the drawing data storage server 300. The construction support device 100, the terminal device 200, and the drawing data storage server 300 are connected to each other via a network NW. The construction manager is an example of a user in the scope of the claims, and the construction worker is an example of another user in the scope of the claims.

[0020] The construction support device 100 is a device that supports construction of a structure CS, for example, operated by a construction manager of the structure CS, and is, for example, a personal computer, a tablet terminal, a smartphone, or the like. The construction support device 100 includes a control unit 110, a storage unit 120, a communication unit 130, a display unit 140, and an operation unit 150. The storage unit 120 is, for example, configured with a hard disk drive (hereinafter referred to as "HDD"), a ROM, a RAM, or the like, and stores a program for controlling the construction support device 100. The communication unit 130 is an interface that communicates with an external device by a wireless communication method or a wired communication method. The display unit 140 is, for example, configured with a liquid crystal display, and displays various images and information. The operation unit 150 is, for example, configured with a keyboard, a mouse, or the like, and accepts operations from the construction manager. The communication unit 130 is an example of a construction support device-side communication unit in the claims.

[0021] The control unit 110 is configured with, for example, a central control unit (hereinafter referred to as "CPU") and executes various programs read from the storage unit 120. This realizes each function of the control unit 110, such as a map information data acquisition unit 112, a drawing data acquisition unit 114, a composite map generation unit 116, and a sharing instruction unit 118. Each of these functions will be described later in "A-2. Construction support processing."

[0022] The terminal device 200 is a terminal device operated by, for example, a construction worker (P1, P2, . . . , Pn) of the structure CS, and is, for example, a tablet terminal, a smartphone, a wearable device such as an HMD (head mounted display), etc. The terminal device 200 includes a control unit 210, a storage unit 220, a communication unit 230, a display unit 240, a satellite signal receiving unit 250, and a photographing unit 260. The storage unit 220 is, for example, configured with a HDD, a ROM, a RAM, etc., and stores various programs for controlling the terminal device 200. The communication unit 230 is an interface that communicates with an external device by a wireless communication method. The display unit 240 is, for example, configured with a liquid crystal display, etc., and displays various images and information. In this embodiment, the display unit 240 has a touch panel and also functions as an operation receiving unit that receives operations by the construction worker. The communication unit 230 is an example of a terminal device side communication unit in the claims.

[0023] The satellite signal receiving unit 250 is a device that acquires information (longitude and latitude information) for identifying its own current position by using a signal received from a satellite 20 constituting a GNSS (Global Navigation Satellite System) such as a GPS (Global Positioning System). The GNSS used in this embodiment may employ single positioning using one receiver like GPS, or may employ relative positioning using two or more receivers like RTK (Real Time Kinematic)-GNSS. The satellite 20 is an example of a global positioning satellite system in the claims.

[0024] The photographing unit 260 is a camera that generates image data representing an image by photographing. In this embodiment, the photographing unit 260 also functions as a barcode reader that reads two-dimensional codes such as QR codes (registered trademark).

[0025] The control unit 210 is configured with, for example, a CPU, and executes various programs read from the storage unit 220. This realizes each function of the control unit 210, such as a composite map acquisition unit 212 and a display control unit 214. Each of these functions will be described later in "A-2. Construction support processing."

[0026] The drawing data storage server 300 is a device that stores drawing data DD (to be described later) representing a two-dimensional drawing (hereinafter, simply referred to as a "drawing") of a structure CS. The drawing data DD is data representing, for example, a plan view of a structure, and is, for example, CAD data in DXF format.

[0027] A-2. Construction support processing: Next, a description will be given of an operation example of construction support processing in the construction support system 10 of this embodiment. Fig. 3 is a flowchart showing the construction support processing in this embodiment.

[0028] First, the drawing data DD is acquired from the drawing data storage server 300 (S110). The construction manager operates the construction support device 100 via the operation unit 150. The drawing data acquisition unit 114 of the construction support device 100 acquires drawing data DD, for example, in DXF format, from the drawing data storage server 300 via the communication unit 130. The drawing data DD is composed of grid data AD representing the position of the grid of the structure CS in the drawing of the structure CS, and pile data PD representing the position of the pile of the structure CS in the drawing of the structure CS (see FIG. 5). That is, the drawing data acquisition unit 114 does not acquire data indicating the contour line of the structure CS in the drawing of the structure CS. Note that the grid data AD and the pile data PD include longitude and latitude information, and position information in, for example, the world geodetic system is recorded for the grid and pile constituting the structure CS.

[0029] Next, map information data MD on the network NW is acquired (S120). The map information data acquisition unit 112 of the construction support device 100 acquires map information data MD including latitude and longitude information of each point and available on the network NW via the communication unit 130. The map information data MD available on the network NW is, for example, Google Maps (registered trademark). In the following of this specification, an operation example of the construction support system 10 assuming the use of Google My Maps, which is one of the functions of Google Maps, will be described.

[0030] Next, the composite map CM is generated by superimposing the drawing data DD on the map information data MD (S130). The composite map generating unit 116 of the construction support device 100 converts the drawing data DD from a DXF file to, for example, a KML (Keyhole Markup Language) file. The composite map generating unit 116 uses Google My Maps to upload the drawing data DD converted into a KML file, thereby superimposing the grid line data AD on the position of the grid line of the structure CS on the map information data MD, and superimposing the stake data PD on the position of the stake of the structure CS on the map information data MD. This makes it possible to generate a composite map CM that can be used on the network NW. As described above, the map information data MD, the grid line data AD, and the stake data PD each contain longitude and latitude information. The composite map generating unit 116 generates a composite map CM by superimposing each data based on the longitude and latitude information contained in the map information data MD, the grid line data AD, and the stake data PD.

[0031] Next, the URL is transmitted to the terminal device 200 of the construction worker designated by the construction manager (S140). The sharing instruction unit 118 of the construction support device 100 instructs the communication unit 130 to share the composite map CM with the terminal device 200 of the construction worker designated by the construction manager. More specifically, the sharing instruction unit 118 generates a URL indicating the location of the composite map CM on the network NW, and transmits the above URL to the terminal device 200 of the construction worker designated by the construction manager via the communication unit 130. The composite map acquisition unit 212 of the terminal device 200 receives the above URL from the construction support device 100 via the communication unit 230. The composite map acquisition unit 212 acquires the composite map CM on the network NW by using the above URL. In this embodiment, the composite map CM can be set to a public range by a function of Google My Maps, and when it is set to be public only to users who know the URL, the composite map CM can be shared substantially only with users to whom the construction manager has sent the URL.

[0032] Next, a two-dimensional code is generated by converting the URL indicating the location of the composite map CM on the network NW (S150). The sharing instruction unit 118 of the construction support device 100 generates a two-dimensional code by converting the URL indicating the location of the composite map CM on the network NW. The generated two-dimensional code is outputted, for example, by printing on paper.

[0033] Next, the terminal device 200 reads the two-dimensional code and acquires the composite map CM (S160). The construction worker acquires the composite map CM by using the terminal device 200 to read the two-dimensional code including information of a URL indicating the location of the composite map CM presented at the construction site of the structure CS, for example. The terminal device 200 reads the two-dimensional code using the photographing unit 260. The composite map acquisition unit 212 of the terminal device 200 acquires the URL indicating the location of the composite map CM from the information included in the two-dimensional code, and acquires the composite map CM on the network NW via the communication unit 230. Note that as a method of sharing the composite map CM with the terminal device 200 of the construction worker, at least one of S140, S150, and S160 may be performed.

[0034] Next, the composite map CM is displayed by the terminal device 200 (S170). FIG. 4 is an explanatory diagram showing an example of the composite map CM. FIG. 5 is an explanatory diagram showing an enlarged view of a part of the composite map CM (part X1 in FIG. 4). The display control unit 214 of the terminal device 200 displays the composite map CM acquired by the composite map acquisition unit 212 on the display unit 240. The composite map CM is displayed as drawing data DD consisting of grid line data AD indicating the position of the grid line of the structure CS and stake data PD indicating the position of the stake of the structure CS superimposed on the position of the structure CS on the map information data MD. The grid line data AD includes a grid line number ASn indicating the number assigned to each grid line, and the stake data PD includes a stake number PIn indicating the number assigned to each stake.

[0035] The display control unit 214 displays the composite map CM, as well as the position of the terminal device 200 on the composite map CM on the display unit 240. As shown in FIG. 5, the composite map CM displays a current position WP indicating position information of the terminal device 200 carried by the construction worker. The terminal device 200 acquires its own position information by receiving satellite signals from the satellite 20 via the satellite signal receiving unit 250. The display control unit 214 of the terminal device 200 displays the current position WP on the composite map CM based on the position information acquired by the satellite signal receiving unit 250. This allows the construction worker to grasp his own position information in the structure CS based on the current position WP displayed on the composite map CM.

[0036] A-3. Advantages of this embodiment: As described above, the construction support device 100 of this embodiment is a construction support device that is operated by a construction manager and supports the construction of a structure CS, and is equipped with a map information data acquisition unit 112 that acquires map information data MD including longitude and latitude information of each point and that is available on the network NW, a drawing data acquisition unit 114 that acquires grid line data AD that indicates the position of the grid line of the structure CS in a two-dimensional drawing of the structure CS, and a composite map generation unit 116 that generates a composite map CM that is available on the network NW by overlaying the grid line data AD on the position of the grid line of the structure CS on the map information data MD.

[0037] In this way, according to the construction support device 100 of the present embodiment, by overlaying the grid data AD on the map information data MD, a composite map CM that can be used on the network NW can be generated. Therefore, a construction worker can easily grasp his / her own position in the construction site of the structure CS by acquiring the composite map CM from the network NW using, for example, a terminal device that the construction worker possesses. In addition, since the composite map CM can be used on the network NW, the construction manager does not need to build an original system, and the cost related to construction support can be reduced.

[0038] In the construction support device 100 of this embodiment, the drawing data acquisition unit 114 acquires pile data PD representing the position of the pile of the structure CS in the two-dimensional drawing of the structure CS, and the composite map generation unit 116 generates a composite map CM by superimposing the pile data PD on the position of the pile of the structure CS on the map information data MD. According to the construction support device 100 of this embodiment, a composite map CM can be generated by superimposing the grid line data AD and the pile data PD on the map information data MD, so that the construction worker can more easily grasp his / her position in the construction site of the structure CS.

[0039] In addition, in the construction support device 100 of this embodiment, the drawing data acquisition unit 114 does not acquire data representing the contour line of the structure CS in the two-dimensional drawing of the structure CS. According to the construction support device 100 of this embodiment, the information of the structure CS acquired by the drawing data acquisition unit 114 is limited to information necessary for the construction worker to grasp his / her position, such as the grid line data AD and the pile data PD, and does not include information related to the contour line of the structure. Therefore, even if the composite map CM is viewed by a third party, it is possible to prevent the third party from grasping information about the construction (for example, the type of the structure CS, etc.).

[0040] The construction support device 100 of this embodiment further includes a sharing instruction unit 118 that instructs the composite map CM to be shared with the terminal device 200 of the construction worker designated by the construction manager. According to the construction support device 100 of this embodiment, the composite map CM is shared with the terminal device 200 of the construction worker designated by the construction manager, so that it is possible to restrict the composite map CM from being viewed by a third party.

[0041] Furthermore, in the construction support device 100 of this embodiment, the sharing instruction unit 118 generates a URL indicating the location of the composite map CM on the network NW, and transmits the URL to the terminal device 200 of the construction worker designated by the construction manager. According to the construction support device 100 of this embodiment, since the URL indicating the location of the composite map CM is transmitted to the terminal device 200 of the construction worker designated by the construction manager, the composite map CM can be shared only with people who need it.

[0042] Furthermore, in the construction support device 100 of this embodiment, the sharing instruction unit 118 generates a two-dimensional code by converting the above URL. According to the construction support device 100 of this embodiment, the construction manager presents the two-dimensional code only to construction workers authorized by the construction manager, and the construction workers can easily obtain the composite map CM using the presented two-dimensional code, so that the composite map CM can be efficiently shared only with those who need it.

[0043] In addition, in the construction support device 100 of this embodiment, the grid line data AD and the stake data PD include latitude and longitude information, and the composite map generating unit 116 generates a composite map CM based on the latitude and longitude information included in the map information data MD, the grid line data AD, and the stake data PD. According to the construction support device 100 of this embodiment, a more accurate composite map CM can be generated by superimposing the map information data MD, the grid line data AD, and the stake data PD based on the latitude and longitude information.

[0044] The construction support system 10 of this embodiment is a construction support system that supports the construction of a structure CS, and includes a construction support device 100 operated by a construction manager and a terminal device 200 operated by a construction worker. The construction support device 100 includes a communication unit 130 that communicates with a network NW, a map information data acquisition unit 112 that acquires map information data MD that includes longitude and latitude information of each point and is available on the network NW, a drawing data acquisition unit 114 that acquires grid line data AD that indicates the position of the grid line of the structure CS in a two-dimensional drawing of the structure CS, and a composite map generation unit 116 that generates a composite map CM that is available on the network NW by superimposing the grid line data AD on the position of the grid line of the structure CS on the map information data MD. The terminal device 200 has a communication unit 230 that communicates with the network NW, a composite map generation unit 116 that acquires a composite map CM via the communication unit 230, a satellite signal receiving unit 250 that acquires position information of the terminal device 200 by receiving a signal from the satellite 20, and a display control unit 214 that displays the composite map CM and the position of the terminal device 200 on the composite map CM.

[0045] In this way, according to the construction support system 10 of the present embodiment, the construction manager can generate a composite map CM available on the network NW by overlaying the grid data AD on the map information data MD using the construction support device 100. Therefore, the construction worker can easily grasp his / her own position in the construction site of the structure CS by acquiring the composite map CM from the network NW using the terminal device 200. In addition, since the composite map CM can be used on the network NW, the construction manager does not need to build an original system, and the cost related to construction support can be reduced.

[0046] In the construction support system 10 of this embodiment, the construction support device 100 further has a sharing instruction unit 118 that generates a URL indicating the location of the composite map CM on the network NW and generates a two-dimensional code by converting the URL, and the terminal device 200 further has a photographing unit 260 that reads the two-dimensional code. According to the construction support system 10 of this embodiment, the construction manager presents the two-dimensional code only to construction workers authorized by the construction manager, and the construction workers can easily obtain the composite map CM using the presented two-dimensional code, so that the composite map CM can be efficiently shared only with those who need it.

[0047] B. Variations: The technology disclosed in this specification is not limited to the above-described embodiments, and can be modified in various forms without departing from the spirit of the invention. For example, the following modifications are also possible.

[0048] The configuration of the construction support system 10 of the above embodiment is merely an example, and various modifications are possible. In the construction support system 10 of the above embodiment, an example is shown in which the construction support device 100, the terminal device 200, and the drawing data storage server 300 are provided, but in addition to these, for example, a server computer or the like may be provided. Also, when the drawing data DD is stored in, for example, the storage unit 120 of the construction support device 100, the drawing data storage server 300 is not necessarily required.

[0049] In the above embodiment, an operation example of the construction support system 10 was shown assuming that Google Maps is used as the map information data MD available on the network NW, but other map information data MD may be used as long as it includes longitude and latitude information of each point and is available on the network NW.

[0050] In the above embodiment, the composite map generation unit 116 generates the composite map CM by overlaying each piece of data based on the longitude and latitude information contained in each of the map information data MD, the center line data AD, and the post data PD, but it is not essential to overlay each piece of data based on the longitude and latitude information.

[0051] In the above embodiment, the composite map CM is generated by uploading the drawing data DD in KML format, but the method of creating the composite map CM is not limited to this. For example, drawing data DD in a format other than KML may be uploaded, or the drawing data DD may be directly drawn on the map information data MD using the function of Google My Maps. [Explanation of symbols]

[0052] 10: Construction support system 20: Satellite 100: Construction support device 110: Control unit 112: Map information data acquisition unit 114: Drawing data acquisition unit 116: Composite map generation unit 118: Sharing instruction unit 120: Memory unit 130: Communication unit 140: Display unit 150: Operation unit 200: Terminal device 210: Control unit 212: Composite map acquisition unit 214: Display control unit 220: Memory unit 230: Communication unit 240: Display unit 250: Satellite signal receiving unit 260: Photography unit 300: Drawing data storage server CS: Structure MD: Map information data NW: Network DD: Drawing data AD: Grid data ASn: Grid number PD: Pile data PIn: Pile number WP: Current position

Claims

1. A construction support device that is operated by a user and supports construction of a structure, a map information data acquisition unit that acquires map information data including latitude and longitude information of each point and available on a network; a drawing data acquisition unit that acquires grid line data representing a position of a grid line of the structure in a two-dimensional drawing of the structure; a composite map generating unit that generates a composite map available on the network by superimposing the grid line data on the position of the grid line of the structure on the map information data; A construction support device comprising:

2. The construction support device according to claim 1, The drawing data acquisition unit acquires pile data representing positions of piles of the structure in a two-dimensional drawing of the structure, The composite map generation unit generates the composite map by overlaying the pile data on the positions of the piles of the structure on the map information data.

3. The construction support device according to claim 2, A construction support device, wherein the drawing data acquisition unit does not acquire data representing the contour line of the structure in a two-dimensional drawing of the structure.

4. The construction support device according to claim 3, further comprising: The construction support device includes a sharing instruction unit that instructs the user to share the composite map with a terminal device of another user designated by the user.

5. The construction support device according to claim 4, The sharing instruction unit generates a URL indicating a location of the composite map on the network, and transmits the URL to the terminal device of the other user specified by the user.

6. The construction support device according to claim 5, The sharing instruction unit generates a two-dimensional code by converting the URL.

7. The construction support device according to claim 6, The grid data and the stake data include the latitude and longitude information, The composite map generation unit generates the composite map based on the longitude and latitude information included in each of the map information data, the grid data, and the pile data.

8. A construction support system for supporting construction of a structure, A construction support device operated by a user; A terminal device operated by another user, The construction support device includes: A communication unit on the construction support device side that communicates with the network; a map information data acquisition unit that acquires map information data including latitude and longitude information of each point and available on the network; a drawing data acquisition unit that acquires grid line data representing a position of a grid line of the structure in a two-dimensional drawing of the structure; a composite map generating unit that generates a composite map available on the network by superimposing the grid line data on the position of the grid line of the structure on the map information data; having The terminal device A terminal device side communication unit that communicates with the network; a composite map acquisition unit that acquires the composite map via the terminal device side communication unit; a satellite signal receiving unit that receives signals from a global positioning satellite system to obtain position information of the terminal device; a display control unit that displays the composite map and a position of the terminal device on the composite map; A construction support system that has the following features:

9. The construction support system according to claim 8, The construction support device further includes: a sharing instruction unit that generates a URL indicating the location of the composite map on the network and generates a two-dimensional code by converting the URL; The terminal device further comprises: A construction support system having a photographing unit that reads the two-dimensional code.

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