4d model data sharing system via cloud and data sharing method

Abstract

To set a specification ID as a starting point to assign, display and operate various information to a 4D model via a cloud by assigning the specification ID to a specific object of the 4D model used in construction management.SOLUTION: A 4D model data sharing system comprises an information sharing server and a user terminal. The information sharing server comprises: a plan 4D model creation unit which creates a plan 4D model which is a plan three-dimensional structural drawing accompanied by a time axis in a construction site; an actual result and correction 4D model creation unit which creates an actual result and correction 4D model in which an actual result is reflected on the plan 4D model; an object management unit which assigns a specification ID to a specific object of any 4D model and sequentially receives information about the object to conserve the information in association with the specification ID; and a shared information providing unit which uploads the created 4D model and the latest information concerning the specific object in the 4D model to which the specification ID is assigned onto a cloud and provides them so as to be browsed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a 4D model data sharing system and data sharing method via the cloud, and in particular to a 4D model data sharing system and data sharing method via the cloud that assigns a specific ID to a specific object of a 4D model used for construction management, making it possible to assign, display, and operate various information via the cloud starting from the specific ID. [Background technology]

[0002] In large-scale civil engineering works and construction projects for large facilities, it has been difficult to share construction plans considered at the design stage accurately with all parties involved, and issues have arisen such as rework during construction due to the intentions at the design stage not being properly reflected in the construction.As a result, the adoption of BIM / CIM (Building / Construction Information Modeling, Management) has been recommended with the aim of improving the productivity of the construction production process.

[0003] In BIM / CIM, by utilizing a four-dimensional model (hereinafter referred to as a 4D model) that adds information about the process, including time information for construction steps, to a three-dimensional model of the construction object (hereinafter referred to as a 3D model), the construction plan can be expressed visually in an easy-to-understand manner, and it can be correctly shared between construction parties and clients.

[0004] However, editing 3D and 4D models in BIM / CIM requires specialized CAD software, which is expensive and requires a high-performance device to run, making it difficult to handle these models easily.Furthermore, creating and editing models using CAD software requires knowledge and expertise to master the software, which creates the issue that only a limited number of users can handle the models.

[0005] Furthermore, large-scale civil engineering projects and construction of large facilities often take a long time, during which time various construction machinery is introduced, and various sensors are often used to monitor the construction environment, which changes as construction progresses, and changes in the natural environment that affect the construction site. The operating status of various construction machinery and sensing data from various sensors are necessary information for construction management, and sharing this information among those involved in the construction is extremely beneficial. If the operating status of various construction machinery and sensing data from various sensors can be displayed in combination with 3D or 4D models, it will be easy to understand visually and will be an effective way to share data.

[0006] Patent Document 1 describes a process management device that combines a sensor model that can reflect information from sensing data measured by a measurement sensor with 3D design data of a 3D design model of a building, links this to process data for constructing the building, visualizes the sensing data measured by the measurement sensor as data on the on-site situation over time, and manages the construction of the building.

[0007] According to Patent Document 1, sensing data related to a building can be viewed in combination with a 3D model over time, enabling efficient construction management. However, the invention described in Patent Document 1 creates a sensor model as an object at a specified location in a 3D model, associates specified sensing data with this sensor model, and displays it. This is operated using specified software that can edit the 3D model and data. Therefore, even when viewing via the Internet, for example, the invention described in Patent Document 1 requires uploading the 3D model every time data is updated. This makes it difficult to add all of the measurement data updated every specified number of days or hours to the 3D model, making it difficult to view measurement data in real time. Furthermore, because the system requires operation of specified software, system users are required to be proficient in using the software.

[0008] Even if it were possible to combine sensor information with a 3D model in this way, if this combination could only be handled in an environment where it was operated using specific software, the number of operators and viewers would be limited. This limited number of operators means that the task of combining the constantly updated sensor information with the 3D model becomes concentrated, placing a heavy workload on the operator. Another remaining issue is that the limited number of viewers makes it difficult to share information between the many people involved in the construction work and between clients and contractors.

[0009] Therefore, there is a need for a data sharing system that can easily display, update, and edit various related information, including sensing data obtained in connection with construction sites, in combination with 3D and 4D models not only on-site but also from remote locations. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Publication No. 2023-151018 Summary of the Invention [Problem to be solved by the invention]

[0011] The present invention has been made in consideration of the problems with the conventional construction management systems described above, and the object of the present invention is to provide a 4D model data sharing system and data sharing method via the cloud that assigns a specific ID to a specific object of a 4D model used for construction management, making it possible to assign, display, and operate various information via the cloud based on the specific ID. [Means for solving the problem]

[0012] In order to achieve the above-mentioned object, the present invention provides a 4D model data sharing system via the cloud, which is equipped with an information sharing server and user terminals connected via a network. The information sharing server is characterized by comprising: a plan 4D model creation unit that creates or acquires and saves a plan 4D model, which is a planned three-dimensional structural drawing accompanied by a time axis at a construction site; a performance / revised 4D model creation unit that creates and saves a performance / revised 4D model, which is a three-dimensional structural drawing that reflects actual results based on the plan 4D model, as construction progresses; an object management unit that receives specific ID assignment information for specific objects in the plan 4D model and / or the performance / revised 4D model, assigns specific IDs to the specific objects, and sequentially receives information about the objects to which specific IDs have been assigned, and stores the information in association with the specific IDs; and a shared information provision unit that uploads the latest information about the plan 4D model and / or the performance / revised 4D model and specific objects to which specific IDs have been assigned in the plan 4D model and / or the performance / revised 4D model to the cloud and provides them for viewing on user terminals.

[0013] The specific ID can be freely assigned regardless of the type of 4D model or the number or type of specific objects, and if the same specific ID is assigned to multiple specific objects, it is preferable that the specific objects assigned the same specific ID be linked to common information associated with the specific ID.

[0014] It is preferable that the shared information providing unit combines the 3D model that is the basis of the planned 4D model and / or the actual / revised 4D model with a time liner, and provides multiple objects that have been assigned a common specific ID by grouping them based on a time axis.

[0015] The specific ID can be freely assigned regardless of the type of 4D model or the number or type of specific objects, and if different specific IDs are assigned to objects of the same type, it is preferable that the specific objects assigned different specific IDs be linked to different information associated with each of the specific IDs.

[0016] In order to achieve the above-mentioned object, the present invention provides a method for sharing 4D model data via the cloud. The method uses a 4D model data sharing system including an information sharing server and a user terminal connected via a network, and includes the steps of: creating or acquiring and saving a 4D plan model, which is a three-dimensional structural drawing of a plan accompanied by a time axis at a construction site; creating or acquiring and saving a 4D actual / revised model, which is a three-dimensional structural drawing that reflects actual results as construction progresses, based on the 4D plan model; receiving specific ID assignment information for specific objects in the 4D plan model and / or the 4D actual / revised model and assigning specific IDs to the specific objects; uploading the created 4D plan model and / or the 4D actual / revised model to the cloud together with the specific IDs assigned to the specific objects and providing them viewable on user terminals; and sequentially receiving information on the objects to which the specific IDs have been assigned, storing the information in association with the specific IDs on the cloud, and providing the information stored in combination with the 4D plan model and / or the 4D actual / revised model in association with the specific IDs in a viewable manner. [Effects of the Invention]

[0017] According to the present invention, a cloud-based 4D model data sharing system and data sharing method uses a plan 4D model created based on a construction plan. As construction progresses, a performance / revised 4D model reflecting actual results is successively updated and created. Specific objects in the plan 4D model and the performance / revised 4D model are assigned specific IDs, and information related to these objects is provided for viewing on the cloud. On the cloud, users can designate specific objects and assign data, or, if linked in advance, identify sensors as specific objects and transfer measurement data from the sensors to the information sharing server at a predetermined timing. This allows users to view various information reflected in the plan 4D model and the performance / revised 4D model in real time. Furthermore, viewing does not require the use of specific software required for creating or editing the plan 4D model or the performance / revised 4D model. This eliminates the need to store specific software on the user's device, allowing users to easily view and share data.

[0018] According to the cloud-based 4D model data sharing system and data sharing method of the present invention, it is possible to assign a common specific ID to objects within the same 4D model or to objects within different 4D models, and the same related information can be assigned to multiple objects assigned a common specific ID. Conversely, by assigning different specific IDs to objects of the same type, different information associated with each specific ID can be linked. In this way, the necessary information can be combined in a convenient manner with the planned 4D model and the actual / revised 4D model, enabling efficient construction management.

[0019] According to the present invention, a system and method for sharing 4D model data via the cloud can link various related information to objects provided on the cloud that have been assigned specific IDs for 4D models, without requiring the user to operate the software required to create and edit the planned 4D model or the actual / revised 4D model. This allows related information to be registered from various user devices, eliminating the need for the user to create and edit the planned 4D model or the actual / revised 4D model through the use of specific software. Furthermore, each time related information is registered, there is no need to edit the original planned 4D model or the actual / revised 4D model and upload it to the cloud. Therefore, revisions to the actual / revised 4D model can be limited to reflecting shape modifications, such as the addition or deformation of objects, as the construction progresses. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a block diagram showing an outline of the configuration of a 4D model data sharing system via the cloud according to an embodiment of the present invention. [Figure 2] FIG. 1 illustrates an example of a planning 4D model according to an embodiment of the present invention. [Figure 3] FIG. 10 is a diagram showing the association of various data based on a specific ID according to an embodiment of the present invention. [Figure 4] FIG. 10 is a diagram showing an image of an object and related information combined with a timeline according to an embodiment of the present invention. [Figure 5] 1 is a flowchart illustrating a method for sharing 4D model data via the cloud according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Next, specific examples of embodiments for implementing a 4D model data sharing system and a data sharing method via the cloud according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a 4D model data sharing system via the cloud according to an embodiment of the present invention.

[0022] Referring to FIG. 1, a 4D model data sharing system 1 via the cloud according to an embodiment of the present invention includes an information sharing server 10, a cloud 2 connected to the information sharing server 10, and a user terminal 20 connected to the information sharing server 10 via the cloud 2 via a network 5.

[0023] The 4D model data sharing system 1 according to an embodiment of the present invention provides a planned 4D model, which is a planned three-dimensional structural drawing accompanying a time axis at a construction site, and a performance / revised 4D model, which is a three-dimensional structural drawing based on the planned 4D model and reflects actual results as construction progresses, to a user terminal 20 via the cloud 2 so that these models can be viewed without using the specified CAD software used to create and edit these 4D models, and is configured to assign specific IDs to specific objects in the plan 4D model and performance / revised 4D model, so that related information related to the objects to which the specific IDs have been assigned can be registered from the user terminal 20.

[0024] Creating and editing BIM / CIM models such as 4D planning models and 4D actual / revised models requires specific CAD software, and operating such CAD software requires a worker with extensive knowledge of the software. In such CAD software, data is generally constructed by combining 3D CAD data that represents the shape with attribute information, but if you want to include related information that links to specific objects in the 4D planning model or the 4D actual / revised model in the attribute information, you need to launch the CAD software and update the 4D model each time you register the related information.

[0025] Therefore, the 4D model data sharing system 1 according to the embodiment distinguishes between the planned 4D models and actual / revised 4D models created and edited with CAD software and the planned 4D models and actual / revised 4D models provided for viewing on the user terminal 20 via the cloud 2, and associates the objects of the 4D models in the CAD software with the objects provided on the cloud 2 by assigning specific IDs to specific objects that require linking of related information. Then, by registering related information related to the objects assigned specific IDs from the user terminal 20, it becomes possible to link the related information required for the planned 4D models and actual / revised 4D models on the cloud 2 without operating the CAD software. Therefore, anyone involved in the construction can register related information at any time, and the registered related information can be viewed remotely on the cloud 2 in combination with the planned 4D models and actual / revised 4D models, making it easy to share information among many people involved in the construction.

[0026] In order to realize the 4D model data sharing system 1 as described above, the information sharing server 10 has a control unit 11, an input / output unit 12, a memory unit 13, a display unit 14, a planned 4D model creation unit 15, an actual / revised 4D model creation unit 16, an object management unit 17, and a shared information provision unit 18.

[0027] The planned 4D model creation unit 15 creates a planned 4D model, which is a planned three-dimensional structural diagram with a time axis at the construction site, based on the construction plan. The 3D model that serves as the basis for the 4D model can be created by converting two-dimensional design drawings into three dimensions, or by assembling the entire structural diagram as a combination of 3D parts using 3D CAD software. Since there are commercialized software programs for converting two-dimensional drawings into three dimensions and 3D CAD software, these can be used to create a 3D model. Furthermore, by adding a time axis to the 3D model and setting the time liner function, it is possible to freely display a 3D model showing the construction status at any desired time from the start of construction to completion.

[0028] By creating 3D models that show the completed state of each process according to the timing of each process break based on the construction plan and saving them sequentially, a 4D plan model can be created as a collection of 3D models that correspond to the timeline.When creating the original surface shape of the construction site as the initial state of the process, it is efficient to use photogrammetry data from a drone or 3D measurement data using a 3D laser scanner attached to a drone.

[0029] The 4D planning model creation unit 15 may be equipped with CAD software and create a 4D planning model under the operation of an operator, or may acquire a 3D model created in a CAD system separate from the information sharing server 10 and create a 4D planning model by associating it with a time axis. The 4D planning model is based on the progress of construction and is the basis for the actual / revised 4D model that shows the latest construction status. The 4D planning model is saved in the memory unit 13 for each construction project.

[0030] The 4D planning model represents the three-dimensional structure of the target construction work over time, but it is preferable to combine additional information such as the construction machinery and other heavy equipment to be deployed at each stage, the number of workers involved, and their job types. By linking this information, it is possible to analyze the efficiency of the work later, and to issue quick and accurate evacuation instructions for construction machinery if there is a possibility of a disaster occurring at the construction site due to environmental changes such as weather.

[0031] Based on the plan 4D model, the actual result / revised 4D model creation unit 16 creates an actual result / revised 4D model, which is a three-dimensional structural diagram that reflects actual results as construction progresses. As with the plan 4D model, the actual result / revised 4D model may also be created using CAD software under the operation of an operator, or a 3D model created in a CAD system separate from the information sharing server 10 may be acquired and created in association with a time axis. Note that while Figure 1 shows an embodiment in which the planned 4D model creation unit 15 and the actual / revised 4D model creation unit 16 are included in the information sharing server 10, in other embodiments they may be systems separate from the information sharing server 10, and the information sharing server 10 may acquire the planned 4D model and the actual / revised 4D model created by the planned 4D model creation unit 15 and the actual / revised 4D model creation unit 16 in this separate system and upload them to the cloud 2.

[0032] If construction progresses according to the original plan, the actual result / revised 4D model may be the same as the planned 4D model. However, if construction progresses faster or slower than the original plan, the actual result / revised 4D model creation unit 16 accepts schedule revision input and creates an actual result / revised 4D model different from the planned 4D model, in which the end date and time of the process is revised to match the actual result. In this case, the processes following the revised process are also revised so that they are advanced by the amount of the advance or delayed by the amount of the delay. If the next process cannot be advanced due to material procurement or personnel availability, or if the completion of the process can be made up for by the delay, input to maintain the schedule of the subsequent process may be accepted, and the schedule of only the process whose schedule has been changed may be revised to match the actual result. In addition to schedule revisions, it is also possible to reflect the external conditions of the construction site, which change daily as the construction progresses. Furthermore, if an unintended situation occurs in the planning stage, such as ground subsidence, and the construction plan needs to be revised, such as by increasing the amount of earth fill, the actual and revised 4D models can be revised.

[0033] The actual results may be input into the actual / revised 4D model by accepting input of the progress status of the work from the construction site's terminal 20, or by the construction site's personnel evaluating and inputting the progress based on images captured by a drone or fixed camera. In some embodiments, in embankment construction, for example, a measuring device capable of acquiring three-dimensional data, such as a 3D laser scanner, may be used to input numerical data on the progress status based on the three-dimensional shape of the construction area, such as the width and height of the embankment. The input data is visualized and reflected in the actual / revised 4D model. Additionally, depending on the content of the construction, measurement data such as ground subsidence due to subsidence plates or floating piles may also be measured and visualized, and the impact of this data may be reflected in the actual / revised 4D model.

[0034] The actual result / revised 4D model creation unit 16 stores the created actual result / revised 4D model separately from the planned 4D model in the storage unit 13. If there is a schedule deviation or plan change from the initial plan, it is desirable to input the cause of the deviation into the actual result / revised 4D model and store it in association with the actual result / revised 4D model.

[0035] Furthermore, just as information about construction machinery and workers is associated with the planning 4D model, additional information, such as the type and number of construction machinery actually used in the process, the number of workers, and their job titles, may be stored in combination with the actual / revised 4D model in the actual / revised 4D model. Furthermore, in some embodiments, construction machinery and workers may be equipped with sensors capable of acquiring location information, such as GNSS, and the location information of the construction machinery and workers acquired by the sensors may be received and associated with the actual / revised 4D model. This makes it possible to view the current process status in the actual / revised 4D model by positioning the construction machinery and workers on the actual / revised 4D model based on the latest location information. Furthermore, location information of construction machinery and workers acquired by sensors may be received and saved at regular intervals, allowing the movements of the construction machinery and workers to be viewed on the actual / revised 4D model. Saving the movements of construction machinery and workers for each process in association with the actual / revised 4D model can be useful for later consideration of improving work efficiency.

[0036] The object management unit 17 receives specific ID assignment information for specific objects in the planning 4D model and / or the actual / revised 4D model, assigns specific IDs to the specific objects, and sequentially receives information about the objects to which specific IDs have been assigned and stores the information in association with the specific IDs. Objects are individual elements having a three-dimensional structure in the planning 4D model or the actual / revised 4D model, and some objects do not change once formed, such as an element of a structure under construction, while others change, such as construction machinery used in construction or measurement sensors that acquire various information from the construction site, which move as the construction progresses, have different operating conditions, or acquire new data over time.

[0037] For items that change as construction progresses, it is necessary to make the latest information visible. The object management unit 17 receives specific ID assignment information for specific objects that should reflect changing information and assigns specific IDs to the specific objects. The specific ID assignment information may be received from the user terminal 20 or may be received by input to the information sharing server 10. The specific ID associates objects in the 4D model in the CAD software with objects provided in the cloud 2, and is incorporated as attribute information of the corresponding objects in the planned 4D model and / or the actual / revised 4D model in the CAD software. If specific objects are predetermined when creating the planned 4D model and / or the actual / revised 4D model, they may be incorporated when creating these 4D models.

[0038] Objects assigned a specific ID are displayed identifiably in the planning 4D model and / or the actual performance / revised 4D model provided on the cloud 2. Construction personnel then select the object with the specific ID for which they wish to register or edit related information, and register or edit the related information. The object management unit 17 acquires the registered or edited related information, associates it with the specific ID, and stores it in the storage unit 13. In this way, new registration or editing of related information, and viewing of registered or edited related information, can be performed without operating the CAD software, making it possible to efficiently and quickly reflect the latest information in the planning 4D model and the actual performance / revised 4D model.

[0039] The input / output unit 12 includes a communication means for providing the planned 4D model and the actual / revised 4D model together with the latest related information to the user terminal 20 via the cloud 2 and the network 5, and for acquiring the related information from the user terminal 20. The network 5 is a wide area network typified by the Internet, and in this embodiment, the communication means includes a communication means compatible with the Internet. The input / output unit 12 also includes input means such as a keyboard and a mouse for inputting data for creating a 4D model.

[0040] The storage unit 13 stores data such as the planned 4D model, actual performance / correction 4D model, specific ID, and related information associated with the specific ID created by the information sharing server 10, as well as CAD software and programs for controlling the information sharing server 10 itself. The storage unit 13 is realized by a hard disk device, a semiconductor memory device, or the like.

[0041] The display unit 14 displays various data such as the planned 4D model, the actual / modified 4D model, and related information of specific objects. It also displays programs for controlling the information sharing server 10 itself as needed. The display unit 14 is realized by a display device such as a liquid crystal display. The control unit 11 controls each component of the information sharing server 10 to perform the functions described above in accordance with a control program stored in the storage unit 13. The control unit 11 is realized by a control circuit including a semiconductor device such as a microcomputer.

[0042] The user terminal 20 is a terminal for viewing the planned 4D model and the actual / revised 4D model, specifying an object to be assigned a specific ID in the planned 4D model and the actual / revised 4D model, and providing information related to the object to which the specific ID is assigned. Referring to FIG. 1, the user terminal 20 includes a control unit 21, an input / output unit 22, a storage unit 23, and a display unit 24.

[0043] The input / output unit 22 includes a communication means for transmitting and receiving data to and from the information sharing server 10 via the cloud 2 and the network 5. It also includes input means such as a mouse, keyboard, or touch panel that allows the user to view the planned 4D model, the actual performance / revised 4D model, etc. while changing the time axis. The input means such as a mouse, keyboard, or touch panel are also used for inputting when creating or editing related information such as the progress of construction work.

[0044] The storage unit 23 stores various data such as related information, as well as programs for controlling the user terminal 20 itself. The display unit 24 displays various data such as the planned 4D model, the actual and revised 4D model, and the like. The control unit 21 controls each component of the user terminal 20 to perform the functions described above in accordance with the control program stored in the storage unit 23. The user terminal 20 is realized by a personal computer, a smartphone, a tablet terminal, or the like.

[0045] FIG. 2 is a diagram illustrating an example of a planned 4D model according to an embodiment of the present invention. Referring to Figure 2, based on the construction plan, 3D plan models, which are three-dimensional structural diagrams representing the completed state at each stage (Steps 1 to 3) as the timeline progresses, are stacked together to form a 4D plan model. While Figure 2 shows the 3D plan models arranged three-dimensionally along the timeline, in reality, one 3D plan model is created for each stage, associated with timeline information, and stored in memory 13. Each 3D plan model is not arranged three-dimensionally and stored as shown in Figure 2. A 4D plan model is a collection of 3D plan models associated with the timeline. A 4D plan model can be viewed by sequentially displaying 3D plan models associated with specific points along the timeline. Furthermore, by using the timeliner function during viewing, the state at a specific point in time can be freely viewed, and a desired period can be displayed continuously.

[0046] The 4D planning model in Figure 2 shows the area around the drainage gate for construction of a new levee and drainage gate between the river and the main levee to create a new detention pond. The drainage gate will be constructed across the levee along the river. The drainage gate is constructed by digging into the ground to form a foundation, and then the pillars supporting the gate and the sluice gate are constructed on top of that. Figure 2 shows the 3D planning model for step 3, showing the completed stage of step 3, with the pillars partially formed on the foundation. This 3D planning model also includes the placement of the necessary number of construction machinery, such as cranes, required for this construction work. The 4D planning model may also include a list of the construction machinery and personnel required for each step. Furthermore, if construction machinery is depicted in the 3D planning model, selecting the selected machinery on the display screen may display the model name of the selected machinery. The 3D planning model may also display the type and location of sensors required to monitor the construction site.

[0047] FIG. 3 is a diagram showing the association of various data based on a specific ID according to an embodiment of the present invention. Referring to Figure 3, the use of specific IDs is shown when the information sharing server 10 and the user terminal 20 receive related information via the cloud 2 and provide a planned 4D model 31 and an actual / revised 4D model 32.

[0048] The planning 4D model 31 and the actual / revised 4D model 32 are created in the information sharing server 10 or in a CAD system 30 equipped with external CAD software. The planning 4D model 31 and the actual / revised 4D model 32 are 3D data consisting of a collection of objects with 3D shapes, including a time axis. To identify each object in the CAD system 30, the CAD software automatically assigns an object ID to each object. Because this object ID assignment is automatic and cannot be performed by the user, the object ID for an object to which the user wishes to assign related information cannot be used as a permanent attribute. For example, because the actual / revised 4D model 32 is created based on the planning 4D model 31, many of the objects represented in each 4D model are the same. However, even if the object appears to the user to be the same, the object IDs assigned in each 4D model may not be the same. Furthermore, moving an object within the same 4D model can result in different object IDs before and after the move.

[0049] Therefore, in the 4D model data sharing system 1 according to the embodiment of the present invention, a specific ID that is different from the object ID and can be specified by the user is set, and the object to which related information is to be assigned is identified based on the specific ID. Conversely, for objects that do not change after being created once, there is no need to assign new related information, so the explanation in Figure 3 is limited to objects to which specific IDs are assigned.

[0050] The information sharing server 10 stores a planning 4D model 31 and a performance / revised 4D model 32 created by a CAD system 30 equipped with CAD software inside or outside the information sharing server 10, either directly or by externally acquiring them. In the example of the planning 4D model 31 shown in Figure 3, one construction machine and two measurement sensors (measurement sensor 1 and measurement sensor 2) are included as objects to be assigned specific IDs. The performance / revised 4D model 32 also shows a case where one construction machine is not sufficient and one new construction machine has been added as a performance. The planning 4D model 31 and the performance / revised 4D model 32 contain objects with the same attributes, but the object IDs automatically assigned to each are different.

[0051] The information sharing server 10 receives specific ID assignment information from a user and assigns a specific ID to a specific object. The specific ID can be set arbitrarily by the user, and the same specific ID can be assigned to multiple objects, or different specific IDs can be assigned to objects with the same attributes. In the example of FIG. 3, the construction machinery object represented by the object ID a0001 in the planning 4D model 31 and the construction machinery object represented by the object ID b0001 in the performance / revision 4D model 32 are assigned the same specific ID, M001. On the other hand, a different specific ID, M002, is assigned to a construction machinery object with the same attribute but represented by the object ID b0002. Furthermore, the same specific ID, S001, is assigned to measurement sensors 1 and 2, which are represented by different object IDs in the planning 4D model 31 and the performance / revision 4D model 32.

[0052] The object to which a specific ID is assigned is provided so as to be identifiable within the planned 4D model 31 and / or the actual / corrected 4D model 32 provided on the cloud 2. Users can refer to the cloud 2 and register related information for objects that have been assigned a desired specific ID, or edit the registered related information. For example, a user in charge of construction machinery 40 can register related information such as operating status and location information for construction machinery 40 with a specific ID of M001. A user in charge of measurement can also register related information such as the sensor type and measurement data for measurement sensors 50 (measurement sensor 1, measurement sensor 2) with a specific ID of S001.

[0053] The registered related information is acquired by the information sharing server 10 and stored in association with a specific ID. The latest related information is also combined with the planned 4D model 31 and / or the actual / corrected 4D model 32 provided on the cloud 2, and the latest information is provided to the user via the cloud 2. In this way, the 4D model data sharing system 1 uses the specific ID as a key to identify an object and link it to related information.

[0054] FIG. 4 is a diagram showing an image of objects and related information combined with a timeline according to an embodiment of the present invention. Referring to Figure 4, the upper part of the central timeline shows a planning 4D model 31, and the lower part shows examples of objects in the actual performance / revision 4D model 32, as well as examples of related information 33 associated with the objects. The planning 4D model 31 is a collection of 3D models created in advance at the planning stage based on the construction plan, at certain stages of construction progress, for example, the unit of creation is the construction process unit. Figure 4 shows two planning 4D models 31 for process 1 and process 2 on the timeline.

[0055] On the other hand, the actual / corrected 4D model 32 is created as needed based on the planned 4D model 31, since deviations from the plan may occur depending on circumstances such as progress or delays in construction relative to the plan, changes to the plan, etc. as the actual construction progresses. Figure 4 shows the state in which four actual / corrected 4D models 32 have been created for process 1 over time.

[0056] First, looking at the planned 4D model 31, in process 1, one construction machine and two measurement sensors, 1 and 2, are planned to be deployed. In process 2, construction machine 2 is added, and measurement sensor 3 is planned to be used instead of measurement sensor 2. The construction machine in process 1 and the construction machine in process 2 have different object IDs, a0001 and f0001, in their respective 4D models, but because they are assigned a common specific ID, M001, they are recognized as the same when viewed by a user via cloud 2, and common related information 33 can be assigned. On the other hand, construction machine 2, which is deployed in process 2, is assigned a different specific ID, M003, so the user can identify it as a different machine from the construction machine assigned M001. Measurement sensors can also be identified as the same or different depending on how the specific IDs are assigned.

[0057] Meanwhile, focusing on the actual results / correction 4D model 32, the actual results / correction 4D model 32 for process 1 shows that construction is proceeding in accordance with the planning 4D model 31 for process 1, with one construction machine and two measurement sensors 1 and 2 being deployed. The construction machine is assigned a specific ID of M001, and measurement sensors 1 and 2 are assigned a specific ID of S001, so it can be identified that the planning 4D model 31 and the actual results / correction 4D model 32 are using the same IDs.

[0058] As construction progresses, various related information 33 is generated. The overall shape of the target structure changes as it approaches the completed state in Step 1. Data on the operation status of construction machinery also accumulates. Furthermore, if a positioning information system such as GNSS is used, the position information of the construction machinery can also become related information 33. Measurement sensors also continuously generate measurement data. The user can assign related information 33 such as operational status and measurement data to the object to which the specific ID is assigned, as necessary.

[0059] In the results / revision 3 of 4D model 32, a construction machine has been added. This is the case when a construction machine is added suddenly due to a construction delay or other unforeseen circumstances. In this case, the newly added construction machine is assigned a unique ID, M002, which is different from the first construction machine, so the two construction machines are displayed separately.

[0060] By creating multiple performance / revision 4D models 32 and assigning a common specific ID to the objects contained in these, multiple objects can be selected by specifying the specific ID. In the example of Figure 4, there are eight measurement sensors, the object whose specific ID is specified as S001, in the performance / revision 4D models 32 for process 1 alone, two in each of the four performance / revision 4D models 32 (performance / revision 1 to 4). For example, after process 1 is completed, it is easier to add or modify related information 33 later if only a limited number of these objects are provided rather than all of them.

[0061] Therefore, in the embodiment, the 3D model that is the basis of the actual / revised 4D model 32, including the planning 4D model 31, is combined with a time liner, and multiple objects assigned a common specific ID are grouped based on the time axis and provided. For example, as shown in FIG. 4, if the observation point is placed on the time axis at the end of actual / revised 2 of the actual / revised 4D model 32, the objects provided on the cloud 2 will be those of actual / revised 3 and 4, which are located after the observation point. The objects of actual / revised 1 and 2 of the actual / revised 4D model 32, which are located before the observation point, will be grouped and provided. Furthermore, the objects of actual / revised 2 of the actual / revised 4D model 32 closest to the observation point may be grouped and provided. This allows for efficient addition and modification of related information 33.

[0062] In addition, although Figure 4 shows that multiple actual / revised 4D models 32 are created for the planned 4D model 31, if, for example, only the related information 33 is updated within one process, it is possible to update only the related information 33 on the cloud 2 and provide it as the latest information, without operating the CAD system 30 and recreating the actual / revised 4D model 32.

[0063] FIG. 5 is a flowchart illustrating a method for sharing 4D model data via the cloud according to an embodiment of the present invention. 5, in step S500, the information sharing server 10 creates a 4D planning model 31 based on the construction plan. A CAD system 30 is used to create the 4D planning model 31, but if the information sharing server 10 does not have a CAD system 30, the information sharing server 10 may accept the 4D planning model 31 created by an external CAD system 30 and store it in the storage unit 13. Furthermore, individual 3D models that form the basis of the 4D planning model 31 may be accepted and stored as a 4D planning model 31 combined with a time axis.

[0064] When construction actually begins, the information sharing server 10 creates a performance / revised 4D model 32 based on the construction performance in step S510. The performance / revised 4D model 32 also uses the CAD system 30. Therefore, if the information sharing server 10 does not have a CAD system 30, it may accept and store the performance / revised 4D model 32 created by an external CAD system 30.

[0065] Next, in step S520, the information sharing server 10 receives specific ID assignment information for specific objects in the planned 4D model 31 and / or the actual / revised 4D model 32 and assigns specific IDs to the specific objects. The specific ID assignment information may be received from the user terminal 20 or may be received by an operator directly entering it into the information sharing server 10. If the objects to which specific IDs will be assigned are predetermined, the specific IDs may be included as one of the attributes when the planned 4D model 31 and / or the actual / revised 4D model 32 are created. Conversely, if specific IDs are assigned later, the specific IDs are linked as one of the attribute information of the target objects in the planned 4D model 31 and / or the actual / revised 4D model 32. The specific IDs can be set within a special data structure or a special data range, making it possible to identify the presence or absence of a specific ID in the attribute information.

[0066] Thereafter, in step S530, the information sharing server 10 uploads the planned 4D model 31 and / or the actual / revised 4D model 32 to the cloud 2 along with the specific ID assigned to the specific object. The planned 4D model 31 and / or the actual / revised 4D model 32 uploaded to the cloud 2 are different from the planned 4D model 31 and / or the actual / revised 4D model 32 handled in the CAD system 30. In other words, the planned 4D model 31 and / or the actual / revised 4D model 32 to be uploaded are the planned 4D model 31 and / or the actual / revised 4D model 32 handled in the CAD system 30, converted by the information sharing server 10 so that they can be viewed even without the CAD system 30. In this case, the objects assigned specific IDs maintain their specific IDs regardless of the conversion, and are therefore identified as the same objects both in the CAD system 30 and on the cloud 2. The uploaded planned 4D model 31 and / or actual / modified 4D model 32 can be viewed from the user terminal 20.

[0067] Next, in step S540, the information sharing server 10 sequentially accepts related information 33 relating to objects assigned specific IDs from the user terminal 20 that provides the related information 33, and provides it to the user terminal 20 via the cloud 2 in combination with the planned 4D model 31 and / or the actual performance / revised 4D model 32. This allows people involved in the construction to check the latest actual performance / revised 4D model 32 and the related related information 33 at any time using the user terminal 20, and to share information without error among people involved in the construction.

[0068] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the present invention is not limited to the above-described embodiments and can be modified in various ways without departing from the technical scope of the present invention. [Explanation of symbols]

[0069] 1. 4D model data sharing system 2. Cloud 5. Network 10 Information sharing server 11, 21 Control unit 12, 22 Input / output section 13, 23 Storage section 14, 24 Display section 15 Planning 4D Model Creation Department 16. 4D Model Creation Department 17 Object Management Unit 18 Shared information provision department 20 User terminal 30 CAD systems 31 Planning 4D Models 32 proven and modified 4D models 33 Related Information 40 Construction machinery 50 Measurement Sensor

Claims

1. A 4D model data sharing system including an information sharing server and a user terminal connected via a network, The information sharing server a 4D planning model creation unit that creates or acquires and stores a 4D planning model that is a three-dimensional structural diagram of a construction site along with a time axis; a performance / correction 4D model creation unit that creates or acquires and stores a performance / correction 4D model, which is a three-dimensional structural diagram that reflects the performance, based on the planning 4D model as the construction progresses; an object management unit that receives specific ID assignment information for specific objects in the planned 4D model and / or the actual / modified 4D model, assigns specific IDs to the specific objects, and sequentially accepts information about the objects to which the specific IDs have been assigned, and stores the information in association with the specific IDs; A 4D model data sharing system via the cloud, comprising a shared information providing unit that uploads planned 4D models and / or actual / revised 4D models, and the latest information on specific objects in the planned 4D models and / or actual / revised 4D models that have been assigned specific IDs, onto the cloud and provides them so that they can be viewed on user terminals.

2. The 4D model data sharing system via the cloud described in claim 1, characterized in that the specific ID can be assigned freely regardless of the type of 4D model or the number or type of specific objects, and when the same specific ID is assigned to multiple specific objects, the specific objects assigned the same specific ID are linked to common information associated with the specific ID.

3. The 4D model data sharing system via the cloud according to claim 2, characterized in that the shared information providing unit combines the 3D model that is the basis of the planned 4D model and / or the actual / revised 4D model with a time liner, and provides a group of multiple objects that have been assigned a common specific ID based on a time axis.

4. The 4D model data sharing system via the cloud described in claim 1, characterized in that the specific ID can be freely assigned regardless of the type of 4D model or the number or type of specific objects, and if different specific IDs are assigned to objects of the same type, the specific objects assigned different specific IDs are linked to different information associated with each of the specific IDs.

5. A data sharing method using a 4D model data sharing system including an information sharing server and a user terminal connected via a network, creating or acquiring and storing a planned 4D model, which is a planned three-dimensional structural diagram with a time axis at the construction site; A step of creating or acquiring and storing a performance / correction 4D model, which is a three-dimensional structural diagram reflecting the performance, based on the planning 4D model as the construction progresses; receiving specific ID assignment information for a specific object of the planned 4D model and / or the actual / modified 4D model and assigning a specific ID to the specific object; uploading the created planned 4D model and / or the actual / modified 4D model together with a specific ID assigned to a specific object onto a cloud and providing the same so that it can be viewed on a user terminal; a step of sequentially accepting information on the cloud relating to the object to which the specific ID has been assigned, storing the information in association with the specific ID, and providing the information stored in association with the specific ID in combination with the planned 4D model and / or the actual / modified 4D model in a viewable manner.

Images