Process control support system, process control support method, and program

Abstract

To support process control of construction work by automatically determining completion or incompletion of erection about a construction member constituting a structure.SOLUTION: A process management support system for supporting process management of construction work, includes: a model acquisition unit for acquiring, from a three-dimensional shape model of a structure, an element model corresponding to a construction member constituting the structure; a data acquisition unit for acquiring three-dimensional point group data generated by surveying the structure under construction; and a completion determination unit for determining completion or incompletion of erection about the construction member corresponding to the element model by superposing the element model and the three-dimensional point group data.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present invention relates to a process management support system, a process management support method, and a program for grasping and managing the progress status of construction work at a construction site.

Background Art

[0002] At a construction site, the progress status of construction work is often managed by collecting records of the construction workers and reports from specialized construction contractors, etc. This work is complicated and has problems in information sharing. Under such circumstances, for example, Patent Document 1 discloses a building construction management system for supporting the construction management of a building.

[0003] In the construction management system of Patent Document 1, information such as the name, position, and shape of each member constituting the building is imported and set from, for example, BIM (Building Information Modeling) software that can three-dimensionally design the building on a three-dimensional virtual space. Also, information such as the construction cost, planned start date of construction, planned completion date of construction, actual start date of construction, and actual completion date of construction of each member constituting the building is imported and set from software for supporting the project management of the building.

[0004] Thereby, on a preset reference date, members that have completed construction, members that are under construction smoothly, members that are under construction with an advanced schedule, and members that are under construction with a delay are three-dimensionally and visually displayed on a three-dimensional virtual space using BIM software.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] According to Patent Document 1, linking information about the building process and construction costs to the building components allows for tracking the progress of construction and simplifies construction management. However, information such as whether the construction of each building component is complete and in its designated location is typically visually confirmed by workers and manually entered into software. This presents challenges in work efficiency and can lead to information leaks and input errors.

[0007] This invention has been made in view of the above problems, and its main purpose is to automatically determine whether the construction of building components constituting a structure is complete or incomplete, and to support the process management of construction work. [Means for solving the problem]

[0008] To achieve this objective, the present invention provides a process management support system for supporting the process management of construction work, comprising: a model acquisition unit that acquires element models corresponding to construction members constituting a structure from a three-dimensional shape model of the structure; and a data acquisition unit that acquires three-dimensional point cloud data generated by surveying the structure during construction. A frame creation unit creates a determination frame corresponding to the construction member based on the element model or a bounding box circumscribing the element model, and a unit overlays the 3D point cloud data with the element model or the determination frame to determine whether the construction is complete or incomplete for each corresponding construction member. It is characterized by comprising a completion determination unit.

[0009] The process control support system of the present invention determines that the number of 3D point cloud data exceeding a preset threshold is the element model or the aforementioned determination frame The system is characterized by determining that the construction member corresponding to the element model is complete when detected within its internal region.

[0010] The process management support system of the present invention is characterized by comprising a completion information output unit that reflects the information acquired by the completion determination unit into the element model and outputs it.

[0011] The process management support system of the present invention includes a model extraction unit that extracts the element model corresponding to the construction member selected as the target for determination from the element models acquired by the model acquisition unit, and the completion determination unit is characterized by superimposing the 3D point cloud data and the element model extracted by the model extraction unit.

[0012] The process management support system of the present invention includes a frame creation unit that creates a determination frame corresponding to the construction member based on the element model or a bounding box circumscribing the element model, and the completion determination unit superimposes the 3D point cloud data with the element model or the determination frame and determines whether the construction is complete or incomplete for each corresponding construction member.

[0013] The process control support system of the present invention is characterized in that the determination frame comprises an outer shell formed by enlarging or reducing the element model or the bounding box.

[0014] The process control support system of the present invention is characterized in that the determination frame comprises an outer shell formed by enlarging the element model or the bounding box and an inner shell formed by reducing its size.

[0015] The process management support system of the present invention is characterized in that the three-dimensional shape model of the structure is a BIM model, and the element model is a component that constitutes the BIM model.

[0016] The present invention provides a process management support method for supporting the process management of construction work, Computers The process involves obtaining element models corresponding to multiple construction members constituting the structure from a three-dimensional shape model of the structure, and obtaining three-dimensional point cloud data generated by surveying the structure during construction. A step of creating a determination frame corresponding to the construction member based on the element model or a bounding box circumscribing the element model, The aforementioned element model or the aforementioned determination frame And the aforementioned 3D point cloud data are superimposed ,versusA step of determining whether the construction of each of the corresponding construction members is completed or not, and is characterized by executing the same.

[0017] The process includes: obtaining element models corresponding to multiple construction members constituting a structure from a three-dimensional shape model of the structure; obtaining three-dimensional point cloud data generated by surveying the structure under construction; creating a determination frame corresponding to the construction member based on the element model or a bounding box circumscribing the element model; and determining whether the construction is complete or incomplete for each corresponding construction member by overlaying the element model or the determination frame with the three-dimensional point cloud data. It is characterized by causing a computer to execute the same.

[0018] According to the process management support system, the process management support method, and the program of the present invention, it is possible to automatically determine whether the construction of each construction member constituting a structure is completed or not, and to support the process management of construction work. In addition, since objective information based on three-dimensional point cloud data is used, it is possible to enhance the reliability of process management, and at the same time, it is possible to save labor in on-site work as compared with the case where an operator visually confirms the construction, and it is also possible to improve the efficiency of process management.

[0019] Furthermore, for an element model in which a number of three-dimensional point cloud data exceeding a preset threshold value is detected, it is determined that the corresponding construction member is completed in construction. Thus, if the threshold value is set corresponding to the performance and resolution of the surveying means, it is possible to automatically determine whether the construction is completed or not with stable high accuracy regardless of which surveying means is used to generate the three-dimensional point cloud data.

[0020] In addition, when there are irregularities on the surface of the construction member, or when there are circumstances such as it being appropriate to determine whether the construction is completed or not in consideration of manufacturing errors or installation errors, etc., instead of the element model, a determination frame is used to automatically determine whether the construction of the construction member is completed or not, and the determination accuracy can be further improved.

Effects of the Invention

[0021] According to the present invention, by superimposing an element model corresponding to a construction member obtained from a three-dimensional shape model of a structure and three-dimensional point cloud data generated by surveying a structure under construction, it is possible to automatically determine whether the construction of the construction member is completed or not, and to support the process management of construction work.

Brief Description of the Drawings

[0022] [Figure 1] It is a diagram showing the BIM model and the element model in the embodiment of the present invention. [Figure 2] It is a diagram showing the surveying means in the embodiment of the present invention. [Figure 3] It is a diagram showing an outline of the three-dimensional point cloud data in the embodiment of the present invention. [Figure 4] It is a diagram showing the bounding box and the determination frame in the embodiment of the present invention. [Figure 5] It is a diagram showing the flow of the process management support method in the embodiment of the present invention. [Figure 6] It is a diagram showing the process management support system in the embodiment of the present invention. [Figure 7] It is a diagram showing the element model of the construction area set as the determination target of the building method in the embodiment of the present invention. [Figure 8] It is a diagram showing an example in which the determination result of the building method in the embodiment of the present invention is displayed on the BIM model. [Figure 9] It is a diagram showing the distribution stage of the construction members in the construction work of the structure.

Embodiments for Carrying Out the Invention

[0023] ≪≪≪Distribution of Construction Members≫≫≫ The construction member E used for the construction of the building B is, for example, manufactured at the factory f1 and stored in the storage location of the factory f1 as shown in FIG. 9. Then, the construction member E is loaded onto the freight car v1 for shipment and transported from the factory f1 to the construction site f2. After the construction member E is carried into the construction site f2, it is temporarily stored in the stockyard of the construction site f2.

[0024] After that, the construction member E stored in the stockyard is transported to the work yard where the construction is carried out. If necessary, after performing the ground assembly work of assembling a plurality of construction members E in the work yard, using a tower crane or the like, the construction member E is lifted from the work yard and the installation work (building method) of the construction member E is performed. After that, the construction member M used for the building method of the building B is inspected.

[0025] <<<Process Management Support System and Process Management Support Method>>> The process management support system and process management support method automatically determine whether the erection of construction components E at the distribution stage, as described above, is completed or incomplete, and supports the process management of construction work. The details of the process management support system and process management support method will be explained below with reference to Figures 1 to 8.

[0026] The automatic determination of whether construction is complete or incomplete utilizes a 3D geometric model of the structure, which is constructed on a computer before construction, and 3D point cloud data generated by surveying the structure during construction. While there are no limitations on the method of constructing the 3D geometric model, this embodiment uses the case of employing a BIM (Building Information Modeling) model as an example.

[0027] First, we will explain the BIM model 10, element model 11, 3D point cloud data D, bounding box 40, and judgment frame 41 used in the process control support system and process control support method.

[0028] ≪≪BIM Models and Elemental Models≫≫ As shown in Figure 1, BIM model 10 is a three-dimensional model of the actual building B constructed on a computer using BIM software. Furthermore, the three-dimensional geometric element models 11, which are components of BIM model 10, are three-dimensional models of the actual construction members E that make up building B. Element models 11 are associated with attribute information, placement information, and shape information.

[0029] Attribute information includes name, product name, specifications, dimensions, weight, material, and unique code. The unique code refers to the unique identification information assigned to each construction component E. Placement information can include, for example, the work area, region, and floor where the construction component E is installed. Shape information includes the external shape of the construction component E, information that identifies its internal region, and position coordinates in the world coordinate system (X, Y, Z).

[0030] ≪≪3D Point Cloud Data≫≫ The 3D point cloud data D is a collection of point data with 3D coordinates that can be generated by surveying the actual building B using the surveying means 20 shown in Figure 2(a). Each point data is assigned a position using absolute coordinates (plane rectangular coordinates, such as latitude, longitude, and elevation). Therefore, the 3D point cloud data D can be used to represent the surface shape of building B, for example, as shown in Figure 3(a).

[0031] The surveying means 20 used to survey building B can be any of the following: for example, a 3D laser scanner, a stereo camera-type rangefinder, a millimeter-wave radar, or LiDAR. Furthermore, the 3D point cloud data D may include color information (R, G, B) in addition to positional information, as shown in Figure 3(b). Note that the positional information shown in Figure 3(b) is an example of coordinates after conversion to the world coordinate system.

[0032] These 3D point cloud data D can be surveyed and generated, for example, by the following method. When a ground-mounted surveying device 20 is used, as shown in Figure 2(a), measurement points P are set in advance for each work section or floor, the surveying device 20 is installed at each measurement point P, and surveys are conducted periodically.

[0033] When a drone-mounted surveying device 20 is used, the building B under construction is periodically surveyed from above using so-called aerial laser surveying. As shown in Figure 2(b), when a vehicle-mounted surveying device 20 is used, the building B under construction is periodically surveyed while being patrolled by a vehicle or other mobile device 30. Both the drone-mounted and vehicle-mounted surveying devices 20 are equipped with a GNSS device.

[0034] ≪≪Bounding Box≫≫ The bounding box 40 is a rectangular prism sized to circumscribe the element model 11, as shown in Figure 4(a). The rectangular prism is formed by combining the minimum lengths in each of the X, Y, and Z axes on the world coordinate system in the process control support system 100, which will be described later. The determination frame 41 is created using either the bounding box 40 or the element model 11 itself, which has such a rectangular prism shape.

[0035] <<<Frame for Judgment>>> The judgment frame 41 can be explained using the bounding box 40 as an example, and the following is an example. The judgment frame 41 shown in Figure 4(a) is a rectangular prism that uses the bounding box 40 as is without adjusting its size.

[0036] The judgment frame 41a shown in Figure 4(b) is composed of an outer enclosure F1 which enlarges the bounding box 40 based on a preset upper limit of magnification. On the other hand, the judgment frame 41b shown in Figure 4(c) is composed of an outer enclosure F1 which enlarges the bounding box 40 based on a preset upper limit of magnification, and an inner enclosure F2 which shrinks the bounding box 40 based on a lower limit.

[0037] Each of the determination frames 41 has position coordinates on the same world coordinate system (X, Y, Z) as the element model 11, as well as shape information. Therefore, the determination frame 41 shown in Figure 4(a) can identify the internal region with a rectangular parallelepiped as its outer shell. Similarly, the determination frame 41a shown in Figure 4(b) can identify the internal region enclosed by the outer shell F1. Likewise, the determination frame 41b shown in Figure 4(c) can identify the internal region enclosed by the outer shell F1 and the inner shell F2. These results are also true when the determination frame 41 is created using the element model 11 itself.

[0038] <<<<General Flow of Process Management Support Methods>>>> The general procedure for automatically determining whether the construction of a building component E is complete or incomplete, using the above-mentioned BIM model 10, element model 11, 3D point cloud data D, bounding box 40, or determination frame 41 created from element model 11, can be explained as follows, referring to the construction management section in Figure 5.

[0039] First, the person in charge selects the construction component E to be evaluated. Then, the process management support system 50 extracts the element model 11 corresponding to the construction component E to be evaluated from among the multiple element models 11 that make up the BIM model 10. Furthermore, for construction components E to be evaluated that have surface irregularities, or for which it is appropriate to take into account manufacturing errors or installation errors, the element model 11 is changed to the evaluation frame 41.

[0040] Next, the 3D point cloud data D generated by surveying the building under construction is superimposed on the element model 11 or the judgment frame 41. Then, the 3D point cloud data contained within the shape data of the construction member E in the element model 11, or within the internal region of the judgment frame 41, is counted.

[0041] If the number of counted data points exceeds a pre-set threshold, the construction of the building component E corresponding to the element model 11 or the judgment frame 41 is determined to be complete. On the other hand, if the number of counted data points falls below the threshold, the construction is determined to be incomplete. The judgment result is linked to the element model 11 and output as visual information on the BIM model 10.

[0042] Thus, this process management support method allows for the automatic determination of whether the construction of each construction component E is complete or incomplete, thereby supporting the process management of construction work. Furthermore, because it uses objective information from 3D point cloud data D, it is possible to increase the reliability of process management. In addition, compared to when workers go to the location of the construction component E to be determined and visually confirm its construction, it is possible to reduce the labor involved in on-site work and improve the efficiency of process management.

[0043] Furthermore, for element models 11 in which a number of 3D point cloud data points D exceeding a pre-set threshold are detected, the corresponding construction member E is determined to be completed. By setting thresholds in accordance with the performance and resolution of the surveying means 20, it is possible to automatically determine whether construction is complete or incomplete with stable and high accuracy, regardless of which surveying means 20 is used to generate the 3D point cloud data points D.

[0044] In addition, if the surface of the construction member E has irregularities, or if it is appropriate to take into account manufacturing errors or installation errors when determining whether the construction is complete or incomplete, the determination frame 41 can be used instead of the element model 11 to automatically determine whether the construction is complete or incomplete, thereby improving the accuracy of the determination.

[0045] The process management support system 50 used in the above-described process management support method will be explained in detail with reference to the block diagram in Figure 6. In this embodiment, we will take the case where the BIM model 10 is stored in a separately prepared management server 60 as an example.

[0046] <<<Management Server>>> The management server 60 is a computer system that constitutes the information management support system, and manages construction components E at each stage of distribution, as explained with reference to Figure 9, as well as the progress of the entire construction project. Roughly speaking, it performs the following tasks: "design of building B composed of construction components E", "acquisition and registration of various information related to construction components E", "acquisition and registration of actual performance information related to construction components E", and "status check of construction components E".

[0047] The process management support system 50 acquires element models 11 and various information attached to element models 11 from the BIM model 10 created in the "Design of Building B composed of construction components E" on the management server 60. In addition, the automatic determination result of whether the construction of construction components E is complete or incomplete, output by the process management support system 50, can be reflected in the "Acquisition and registration of actual information regarding construction components E" performed on the management server 60.

[0048] Further details regarding the management server 60 and the information management system are provided in Japanese Patent Application No. 2021-096092. Furthermore, the process management support system 50 is not necessarily limited to being used in conjunction with an information management system that includes the management server 60. For example, the BIM model 10 may be obtained from another system that has BIM software installed. Also, when using the process management support system 50 independently, it may be equipped with BIM software, and the BIM model 10 may be created using the process management support system 50.

[0049] <<<Process Management Support System>>> The process control support system 50 can be any device that includes an input unit 51, an arithmetic processing unit 52, an output unit 53, and a storage unit 54, as shown in Figure 6, and can be a personal computer, a notebook PC, a tablet terminal, etc.

[0050] The input unit 51 is connected to the management server 60 via a communication network, enabling mutual data transmission, and receives information related to the element models 11 that constitute the BIM model 10. The communication network may be constructed using the internet, a dedicated communication line, or any other method.

[0051] Furthermore, the input unit 51 is connected to the surveying means 20 by wireless, wired, or communication network, and receives information related to the 3D point cloud data acquired by the surveying means 20. Although not shown in the figures, the input unit 51 may also be configured to be connected to input devices such as a keyboard, mouse, scanner, or touch panel, and to receive information input to these devices. Also,

[0052] The output unit 53 comprises a data output unit 531 and a completion information output unit 532. The data output unit 531 outputs information such as information acquired via the input unit 51 and processing data processed by the arithmetic processing unit 52, which will be described later. The completion information output unit 532 outputs the determination result when the arithmetic processing unit 52, which will be described later, receives a command from the completion determination unit 526 and determines whether the construction of the construction member E corresponding to the element model 11 is complete or incomplete.

[0053] The information output from the output unit 53 can be output to the management server 60 or to a display device 55, such as a display or printer, that is connected to the output unit 53 wirelessly or via a wired connection. The display device 55 may also be configured to have a touch panel, in which case the display device 55 is configured to serve as both the output unit 53 and the input unit 51.

[0054] Furthermore, terminal devices 56, such as mobile terminals carried by workers or management PCs installed in construction offices, may be made capable of mutual data transmission between the process management support system 50 and the terminal devices 56 via a communication network. In this case, information can be input from the terminal devices 56 to the process management support system 50 via the input unit 51, or from the process management support system 50 to the terminal devices 56 via the output unit 53, in addition to the management server 60.

[0055] The arithmetic processing unit 52 includes a CPU (Central Processing Unit), ROM (Read Only Memory), and RAM (Random Access Memory). The memory stores program code or instructions configured to cause the CPU to execute processing, and the arithmetic processing unit 52 loads the program stored in ROM, etc., into RAM to control the operation of the process control support system 50. This arithmetic processing unit 52 includes at least a model acquisition unit 521, a data acquisition unit 522, a box extraction unit 523, a frame creation unit 524, a model extraction unit 525, and a completion determination unit 526.

[0056] As will be explained in more detail later, the calculation processing unit 52 functions roughly as follows: The model acquisition unit 521 acquires element models 11, which are components of the BMI model 10 stored in the management server 60. The box extraction unit 523 extracts bounding boxes 40 from the element models 11 acquired by the model acquisition unit 521. The frame creation unit 524 creates a judgment frame 41 from the bounding boxes 40 or element models 11.

[0057] The model extraction unit 525 extracts the element models 11 that correspond to the construction member E selected as the target for construction determination from the element models 11 acquired by the model acquisition unit 521. If necessary, it also converts the extracted element models 11 into a determination frame 41. The data acquisition unit 522 acquires the 3D point cloud data generated by the surveying means 20. The completion determination unit 526 then automatically determines whether the construction of the target construction member E is complete or incomplete based on the 3D point cloud data acquired by the data acquisition unit 522 and the element models 11 or determination frame 41 extracted by the model extraction unit 525.

[0058] <<<<Process management support method using a process management support system>>>> The procedure for automatically determining whether the construction of a construction member E is complete or incomplete, and supporting the construction process management, using the process management support system 50 having the above configuration, will be explained according to the flow shown in Figure 5. In this embodiment, we will take as an example the case in which the completion or incomplete status of construction members E is automatically determined for multiple construction members E included in one work section, as shown in Figure 7, from the floor group shown as range A in the BIM model 10 shown in Figure 1.

[0059] <<<Preparation>>> First, before construction of building B, the BIM model 10 of building B is created on the management server 60. Furthermore, attribute information, placement information, and shape information, as explained with reference to Figure 1, are added to the element models 11 of construction member E, which are components of the BIM model 10. In addition, a bounding box 40 is set for each element model 11.

[0060] <<STEP 1: Obtaining the element model>> The process management support system 50 receives multiple element models 11 that constitute the BIM model 10 from the management server 60 via the input unit 51. Then, the calculation processing unit 52 receives a command from the model acquisition unit 521 and stores the various information and bounding boxes 40 attached to each of the multiple element models 11 in a database prepared in the storage unit 54.

[0061] <<STEP 2: Creating a frame for judgment>> When the element model 11 is stored in the memory unit 54, the arithmetic processing unit 52 receives a command from the box extraction unit 523, extracts the bounding boxes 40 set for each element model 11, and stores them in the memory unit 54. The arithmetic processing unit 52 also receives a command from the frame creation unit 524, and creates a determination frame 41 from the element model 11 or the bounding boxes 40, as described with reference to Figures 4(a) to (c).

[0062] As described above, the judgment frame 41 is created by an outer or inner outline F1 or F2 formed by enlarging or reducing the outer shape or bounding box 40 of the element model 11. When the person in charge manually inputs information regarding the magnification for forming these outer or inner outlines F1 or F2 into the process control support system 50, for example, they input the upper or lower limit of the magnification for the outer shape or bounding box 40 of the element model 11 via the input unit 51 from an input device such as a keyboard or mouse.

[0063] Furthermore, if the display device 55 is equipped with a touch panel, the operation information performed by the operator via the touch panel is adopted as the upper or lower limit of the magnification. Based on this, the arithmetic processing unit 52 creates a determination frame 41 corresponding to the magnification. If information corresponding to the magnification cannot be detected, a bounding box 40, as shown in Figure 4(a), is used as the determination frame 41. The determination frame 41 thus created is linked to the element model 11 and stored in a database prepared in the storage unit 54.

[0064] On the other hand, information regarding the external shape of the element model 11 or its magnification relative to the bounding box 40 may be stored in the memory unit 54 in advance, or included in the attribute information assigned to the element model 11. If stored in the memory unit 54, for example, the above information may be set for each element model 11. This allows for the automatic creation of a judgment frame 41 corresponding to the construction member E, while eliminating the need for manual input by the person in charge.

[0065] Note that the determination frame 41 does not necessarily need to be prepared for all element models 11. Therefore, when automatically creating the determination frame 41, it is advisable to include information on whether or not the determination frame 41 is necessary, along with the information required to create the determination frame 41, for each element model 11.

[0066] <<STEP 3: Generating 3D Point Cloud Data>> While the process of acquiring the element model 11 and creating the judgment frame 41 (STEP 2) described above is being carried out, once construction work begins, the building B under construction is surveyed using the surveying means 20 as appropriate according to the progress of the work.

[0067] The surveying may be carried out by periodically touring the entire building B under construction using a mobile surveying device 20, as explained with reference to Figure 2(b). Alternatively, it may be carried out by setting the timing for each work section or floor as defined in the construction plan using a ground-mounted surveying device 20, as explained with reference to Figure 2(a). Furthermore, it may be carried out by using a drone-mounted surveying device 20 in combination with other methods.

[0068] The 3D point cloud data D generated by the surveying means 20 is input to the process management support system 100 via the input unit 51, along with the date and time of the survey. The arithmetic processing unit 52 then receives a command from the data acquisition unit 522 and converts the 3D point cloud data D, which has its position assigned by absolute coordinates, into the world coordinate system of the process management support system 100. The coordinate-transformed 3D point cloud data D is stored in a database prepared in the storage unit 54.

[0069] <<STEP 4: Extract the element model and judgment frame to be used for the judgment>> Around the time of the 3D point cloud data generation process (STEP 4), the person in charge selects the construction member E to be judged as either completed or incomplete, using an input device such as a keyboard or mouse, or a display device such as a touch panel 55.

[0070] When the selection information for construction component E is input to the process management support system 50 via the input unit 51, the calculation processing unit 52 receives a command from the model extraction unit 525 and extracts the element model 11 corresponding to the selected construction component E from the database stored in the storage unit 54. The selection information for construction component E entered by the person in charge can use various types of information depending on the selection method.

[0071] For example, when inputting the construction component E to be evaluated using an input device such as a keyboard or mouse, the information contained in the attribute information assigned to the element model 11 is used. As explained with reference to Figure 1, examples of attribute information include the name or product name of the construction component E, a unique code assigned to it, and the work area or floor where the construction component is located.

[0072] Furthermore, if a list file of construction member E associated with element model 11 has been created on the management server 60, this can also be used. In this case, the list file input from the management server 60 to the process management support system 50 via the input unit 51 is output to the display device 55 via the output unit 53. When a construction member E is selected from the list file using an input device such as a keyboard or mouse, the calculation processing unit 52 is configured to identify and extract the corresponding element model 11 based on the selected construction member E.

[0073] On the other hand, when a user selects a construction component to be judged using a display device 55 such as a touch panel, the BIM model 10 is output to the display device 55 via the output unit 53. Then, when an element model 11 is directly selected from the BIM model 10 using the touch panel, the calculation processing unit 52 is configured to extract the selected element model 11. At this time, the selection of element models 11 using the touch panel can be done individually, as a multiple selection, or as a range selection.

[0074] In this embodiment, as shown in Figure 7, one construction section in building B is set as the target for evaluation. Therefore, element models 11 corresponding to each construction member E located within this construction section (such as multiple element models 11a corresponding to columns, multiple element models 11b corresponding to floors, and multiple element models 11c corresponding to beams) are extracted.

[0075] Thus, the construction components E subject to evaluation may be selected by scope, such as a work area or floor, or they may be selected individually. Alternatively, all construction components E constituting building B may be selected, or any other option may be chosen to meet the requirements of the person in charge.

[0076] Furthermore, if the selected work area includes a construction member E for which automatic construction determination should be performed using the determination frame 41 instead of the element model 11, the person in charge selects the corresponding construction member E using an input device such as a keyboard or mouse, or a display device such as a touch panel 55. Figure 7 illustrates the case where the element model 11c corresponding to a beam is changed to a determination frame 41a having an internal area surrounded by the outer enclosure F1 explained with reference to Figure 4(b).

[0077] When using an input device such as a keyboard or mouse, the information used to identify the construction member E to be changed in the judgment frame 41 is information that can identify the construction member E, such as a unique code included in the attribute information assigned to the element model 11. On the other hand, when using a display device such as a touch panel 55, the BIM model 10 can be displayed on the display device 55 and the element model 11 can be identified directly.

[0078] When information on construction component E is input to the process management support system 50 via the input unit 51, the calculation processing unit 52 receives a command from the model extraction unit 525, retrieves the corresponding judgment frame 41 from the database stored in the storage unit 54, and changes the element model 11 extracted as the object of judgment to the judgment frame 41.

[0079] On the other hand, for example, the attribute information assigned to the element model 11 may include in advance whether or not it needs to be changed to a determination frame 41, and the arithmetic processing unit 52 may be configured to change the element model 11 to a determination frame 41 based on this information. In this way, the element model 11 can be automatically changed to a determination frame 41 while eliminating the need for manual input by the person in charge.

[0080] <<STEP 5: Automatic determination of construction method>> When an element model 11 or determination frame 41 corresponding to the construction member E to be judged is extracted, the calculation processing unit 52 receives a command from the completion determination unit 526 and automatically determines whether the construction of each construction member E is complete or not.

[0081] The element model 11 or the judgment frame 41 and the 3D point cloud data D stored in the database in STEP 3 are both positioned in the world coordinate system of the process management support system 50. Furthermore, as explained with reference to Figure 1, the element model 11 has the shape of the construction member E as its outer shell and possesses shape information that can identify its internal region. Similarly, as explained with reference to Figures 4(a) to (c), the judgment frame 41 also possesses shape information that can identify its internal region.

[0082] Therefore, the element model 11 or judgment frame 41 corresponding to the construction member E to be judged and the 3D point cloud data are superimposed on the world coordinate system, and the 3D point cloud data in the internal region is counted for each element model 11 or judgment frame 41. If the number of data exceeds the threshold set for each element model 11 or judgment frame 41, it is determined that construction is complete; if it falls below the threshold, it is determined that construction is incomplete. Information regarding the judgment result is linked to the element model 11 or judgment frame 41 and stored in the database of the storage unit 54.

[0083] The thresholds set for each element model 11 or judgment frame 41 are determined based on the performance and resolution of the surveying means 20 used when surveying building B. Therefore, each time 3D point cloud data D is generated, the thresholds set for each element model 11 or judgment frame 41 according to the surveying means 20 used are input to the process management support system 50.

[0084] Alternatively, the memory unit 54 of the process management support system 50 may store threshold values ​​set considering the surveying means 20 for each element model 11 or determination frame 41, and the calculation processing unit 52 may be configured to perform automatic determination of the construction status using the threshold values ​​stored in the memory unit 54. In this way, manual input by the person in charge can be omitted, and the completion or incompleteness of the construction status of the target construction member E can be automatically determined.

[0085] ≪STEP 6: Output of Judgment Results≫ As explained in STEP 5, information regarding the judgment result is linked to the element model 11 or the judgment frame 41 and stored in the database of the storage unit 54. Therefore, the process control support system 50 can output the judgment result to the display device 55 or terminal device 56, etc., via the completion information output unit 532, reflecting it in the element model 11.

[0086] For example, Figure 8 shows an example where a diagram illustrating element models 11 that have been visually determined to be completed using the BIM model 10 is displayed together with a table showing a list of element models 11 included in the work area subject to determination and the determination results.

[0087] The visually displayed diagram shows an example where, as shown in Figure 7, hatching has been applied to the element models 11 that make up the BIM model 10, which displays only the work sections selected as the target for evaluation, and the elements that were determined to be completed in STEP 5 have been displayed as an image. Therefore, at the time the 3D point cloud data D is acquired, it is possible to visually understand that the element models 11 that have not been hatched (such as the multiple element models 11b corresponding to the floor on the right side of the page, and the multiple element models 11c corresponding to the beams) are incomplete.

[0088] Furthermore, construction members E that have already been erected at the time the building B under construction is surveyed by the surveying means 20 may be included in the 3D point cloud data D even if they are not subject to evaluation. For example, comparing the 3D point cloud data D in Figure 3(a) with the element model 11 corresponding to the construction member E subject to evaluation in Figure 7, it can be seen that the lower floor, which is not included in the evaluation target, is surveyed in the 3D point cloud data D.

[0089] However, as explained in STEP 5, the automatic determination of whether construction is complete or incomplete involves extracting the element model 11 or determination frame 41 corresponding to the construction member E to be determined, and counting the 3D point cloud data D contained within them. Therefore, without being constrained by the information in the 3D point cloud data D, it is possible to automatically and accurately determine whether construction of the construction member E to be determined is complete or incomplete.

[0090] The process management support system, construction process management support method, and program of the present invention are not limited to the embodiments described above, and it goes without saying that various modifications are possible without departing from the spirit of the present invention.

[0091] For example, in this embodiment, a BIM model was used for the 3D shape model of the structure, but it is not necessarily limited to this. For example, it is also possible to use a CIM model (Construction Information Modeling), which is used when constructing structures in the construction field.

[0092] Furthermore, in this embodiment, Figure 8 illustrates a case where the construction determination information is reflected in the element model 11 on the BIM model 10, which displays the construction sections selected as targets for determination. However, as long as the construction determination information can be confirmed for each element model 11 on the BIM model 10, the method of display is not limited in any way.

[0093] Furthermore, while Figure 8 shows an example where only the judgment results for the element model 11 being judged are displayed, it is also possible to display element models 11 in which construction judgments have been performed in the past and the judgment results have already been reflected. In this case, it is also possible to display the progress of construction of the entire building B at the time the latest 3D point cloud data D was acquired on the BIM model 10 of the entire building B. [Explanation of symbols]

[0094] 10. BIM Model (3D Shape Model) 11-element model 20 Surveying instruments 30 Mobile Units 40 bounding boxes (Bb) 41 Frame for Judgment 50 Process Management Support System 51 Input section 52 Arithmetic Processing Unit 521 Model Acquisition Section 522 Data Acquisition Unit 523 Box Extraction Section 524 Frame creation section 525 Model Extraction Unit 526 Completion judgment part 53 Output section 54 Storage section 55 Display device 56 Terminal devices 60 Management Servers B Building (structure) P measurement point E Construction components f1 factory f2 construction site v1 freight car

Claims

1. A process management support system that assists in the process management of construction work, A model acquisition unit that acquires element models corresponding to the construction members constituting the structure from a three-dimensional shape model of the structure, A data acquisition unit that acquires 3D point cloud data generated by surveying the aforementioned structure under construction, A frame creation unit that creates a determination frame corresponding to the construction member based on the element model or a bounding box circumscribing the element model, A completion determination unit overlays the three-dimensional point cloud data with the element model or the determination frame to determine whether the construction is complete or incomplete for each corresponding construction member. A process control support system characterized by comprising the following features.

2. In the process control support system according to claim 1, The completion determination unit When a number of three-dimensional point cloud data exceeding a predetermined threshold is detected within the internal region of the element model or the determination frame, A process management support system characterized by determining that the construction member corresponding to the element model is complete.

3. In the process control support system according to claim 1, A process management support system characterized by comprising a completion information output unit that reflects the information acquired by the completion determination unit into the element model and outputs it.

4. In the process control support system according to claim 1, The model extraction unit extracts the element model corresponding to the construction member selected as the target for determination from the element models acquired by the model acquisition unit, The completion determination unit is characterized by overlaying the three-dimensional point cloud data with the element model extracted by the model extraction unit, thereby supporting the process control system.

5. In the process control support system according to claim 1, A process control support system characterized in that the determination frame comprises an outer shell formed by enlarging or reducing the element model or the bounding box.

6. In the process control support system according to claim 1, A process control support system characterized in that the determination frame comprises an outer shell formed by enlarging the element model or the bounding box and an inner shell formed by reducing the element model or bounding box.

7. In the process control support system according to claim 1, The three-dimensional shape model of the aforementioned structure is a BIM model, A process control support system characterized in that the element model is a component that constitutes the BIM model.

8. There are process management support methods that assist in the process management of construction work, Computers A step of obtaining element models corresponding to multiple construction members constituting the structure from a three-dimensional shape model of the structure, A process of obtaining 3D point cloud data generated by surveying the aforementioned structure under construction, A step of creating a determination frame corresponding to the construction member based on the element model or a bounding box circumscribing the element model, A step of determining whether construction is complete or incomplete for each corresponding construction member by superimposing the element model or the determination frame with the three-dimensional point cloud data, A method for supporting the process management of construction work, characterized by performing the following.

9. A step of obtaining element models corresponding to a plurality of construction members constituting the structure from a three-dimensional shape model of the structure, A process of obtaining 3D point cloud data generated by surveying the aforementioned structure under construction, A step of creating a determination frame corresponding to the construction member based on the element model or a bounding box circumscribing the element model, A step of determining whether construction is complete or incomplete for each corresponding construction member by superimposing the element model or the determination frame with the three-dimensional point cloud data, A program characterized by causing a computer to execute something.

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