JP7489802B2 - Construction work support system and construction work support method - Google Patents

Description

The present invention relates to a construction work support system and a construction work support method that support work at a construction site.

Conventionally, in order to improve safety at construction sites, various techniques have been developed to alert workers engaged in construction work.
For example, the following Patent Document 1 aims to appropriately set an attention calling area around a construction machine to allow people around the construction machine to appropriately recognize the attention calling area. An attention calling area is set around the construction machine, and visible light information is generated in the attention calling area. The attention calling area is set so that the position or size changes depending on the operating state (turning speed, turning direction, traveling speed, traveling direction) of the turning operation or traveling operation of the construction machine.

JP 2019-105105 A

At many work sites, the work manager explains to the workers the important points to be aware of for the day's work at the daily morning and afternoon meetings, etc. However, various tasks are carried out on a daily basis at construction sites, and there is an issue that preparing such explanations is a heavy burden for the work manager.
The present invention has been made in consideration of the above circumstances, and has an object to improve safety at construction sites while reducing the burden on work managers.

In order to achieve the above-mentioned object, the construction work support system of the present invention is a construction work support system that supports work at a construction site, and is characterized by comprising: a precautions memory unit that stores precautions related to the work, a point cloud data acquisition unit that acquires three-dimensional point cloud data of the construction site by a laser scanner, a data comparison unit that compares three-dimensional design data of construction objects at the construction site with the three-dimensional point cloud data, and a precautions presentation unit that extracts the precautions related to the work to be performed in the future at the construction site from the precautions memory unit based on the comparison result of the data comparison unit, and presents them to workers engaged in work at the construction site.
The construction work support method of the present invention is a construction work support method for supporting work at a construction site, and is characterized by including a point cloud data acquisition step of acquiring three-dimensional point cloud data of the construction site by a laser scanner, a data comparison step of comparing three-dimensional design data of a construction object at the construction site with the three-dimensional point cloud data, and a precautions presentation step of extracting precautions related to work to be performed in the future at the construction site from a precautions memory unit based on a comparison result in the data comparison step, and presenting the precautions to workers engaged in work at the construction site.

The present invention can improve safety at construction sites while reducing the burden on work managers.

1 is a diagram showing a schematic configuration of a construction work support system according to an embodiment; FIG. 2 is a block diagram showing a functional configuration of the construction work support system. FIG. 2 is a diagram showing a flow of work support in the construction work support system.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a construction work support system and a construction work support method according to the present invention will be described in detail below with reference to the accompanying drawings.
FIG. 1 is a diagram showing a schematic configuration of a construction work support system according to an embodiment.
The construction work support system 10 manages the progress of work at a construction site. The construction site may be an architectural construction site such as a building, an apartment building, or a warehouse, or may be a civil engineering construction site such as a dam, a bridge, or a tunnel.
The construction work support system 10 includes a work support device 12, an automatic patrol vehicle 14 (14A, 14B), and a design data creation device 16.

The work support device 12 is a computer including a CPU, a ROM for storing and recording control programs, a RAM for operating the control programs, an EEPROM for rewritably storing various data, and an interface section for interfacing with peripheral circuits, etc.
The work support device 12 is installed near a construction site, such as a management building of the construction site, and is used by construction site workers, work managers, etc. In Fig. 1, the work support device 12 is illustrated as a notebook computer, but it may also be a desktop computer, a tablet terminal, etc.

The automated patrol vehicle 14 (14A, 14B) is equipped with a laser scanner 18 and automatically patrols the construction site. The automated patrol vehicle 14 has a preset route for patrolling the construction site, for example, and while checking its current location using beacons or GPS installed within the construction site, it scans the surroundings with the laser scanner 18 at a specified scanning point and acquires point cloud data within the construction site.

In FIG. 1, a drone 14A and a cart robot 14B are illustrated as examples of the automatic patrol vehicle 14, but various conventionally known devices that can move autonomously can be used as the automatic patrol vehicle 14. For example, drone 14A may be used at a construction site where a building with a high ceiling is being constructed (or at a part of a building where the ceiling is high), and cart robot 14B may be used at other sites.

The laser scanner 18 (3D laser scanner) radially irradiates a laser onto the measurement object, and obtains the 3D coordinates of the surface shape of the measurement object based on the distance to the measurement object and the irradiation angle calculated from the laser reflection time. Although it depends on the performance of the laser scanner 18, it can perform non-contact measurement at a speed of tens of thousands of points per second, and obtain high-density planar point cloud data.
In addition, an image can be taken at the measurement location using a camera built into the laser scanner 18, and the point cloud data can be colored according to the color of the image and the laser reflection intensity (the degree of laser reflection changes depending on the material and color of the object being measured).
In addition, even when measuring the back side of a target object or a wide area that cannot be measured from a single location, it is possible to combine multiple scan data by using targets as common points, or to assign coordinates.

In this embodiment, the automatic patrol vehicle 14 automatically patrols the construction site and acquires point cloud data of each part of the construction site, but this is not limited to the above. For example, a worker at the construction site may carry a laser scanner 18 and patrol the construction site, perform scanning work at specified points, and acquire point cloud data of each part of the construction site.
In addition, rather than having the drone 14A and the cart robot 14B patrol automatically, patrol and scanning operations may be performed by remote control.

The design data creation device 16, like the work support device 12, is a computer that includes a CPU, a ROM for storing and remembering control programs, a RAM as the operating area for the control programs, an EEPROM for rewritably holding various data, and an interface section for interfacing with peripheral circuits, etc.
In FIG. 1, the design data creation device 16 is illustrated as a desktop computer, but it may be a notebook computer or the like.

The design data creation device 16 is installed in, for example, a company that undertakes construction work, and is used to create design data for construction objects at a construction site. More specifically, a design application is installed in the design data creation device 16, and a designer operates the device to create three-dimensional design data as design drawings or construction drawings for the construction object.
The design data creation device 16 stores past design data 160 (see FIG. 2), which is design data (BIM models, described later) of buildings constructed in the past. The designer searches the past design data 160 for three-dimensional design data of buildings similar to the current construction object, and partially reuses similar parts or uses them as references when carrying out design work. This makes it possible to make the design work more efficient.

In this embodiment, a BIM (Building Information Modeling) model is used as the three-dimensional design data.
In BIM, a database of buildings, which includes attribute data such as cost, finish, and management information, is used in each phase of construction work in addition to a 3D digital model of a building created on a computer. The BIM model includes component models of each component (part) that makes up the construction object. The component model can include not only the dimensions of the components (width, depth, height, etc.), but also the materials and assembly process (time).
In addition, the three-dimensional design data is not limited to a BIM model, and may be in any format as long as it can achieve the same function.

In this embodiment, each component model constituting the BIM model includes precautions (precaution data) for performing work involving each component. That is, precautions are included in the BIM model.
The precautions are texts (statements) that specifically point out things to be careful of when performing work, and are created taking into consideration not only general precautions but also examples of past accidents.

In this embodiment, the BIM model in the above-mentioned past design data 160 includes notes, and by reusing data in the past design data 160 when creating a BIM model, for example, the notes can also be included in a newly created BIM model.
More specifically, when a designer creates a BIM model of a building object, he/she partially reuses or refers to a portion similar to a BIM model in the past design data 160. At this time, if a note (note data) is registered in a component part of the reused part (or reference part) of the BIM model, the note can be included in the BIM model to be created this time by importing the data into the same type of part of the BIM model currently being created.
In addition, for example, a design application may have a function to extract cautions from past data that are highly similar to the construction object currently being designed. The designer can include the extracted cautions as necessary in the component models of the BIM model to be designed this time. A high degree of similarity means, for example, that the building uses, types, structures, users, and owners are the same.

FIG. 2 is a block diagram showing the functional configuration of the construction work support system.
The work support device 12 functions as a point cloud data acquisition unit 122, a data comparison unit 124, a notice presentation unit 126, and a notice registration unit 128 as a result of the CPU executing the control program.
In addition, a BIM model including precautions for work at a construction site is stored in the EEPROM, which is the memory area (storage) of the work support device 12. That is, the memory area of the work support device 12 functions as a BIM model memory unit 120 and a precaution memory unit 120A.
In addition, the storage location of the BIM model and the precautions is not limited to within the work support device 12, but may be an external storage device accessible by the work support device 12.

The BIM model storage unit 120 stores a BIM model, which is three-dimensional design data of a construction object at a construction site. As described above, the BIM model includes component models of each component (part) that constitutes the construction object, and each component model includes precautions (precautions data) that indicate precautions to take when working with each component. Therefore, the BIM model storage unit 120 also serves as the precautions storage unit 120A.

The point cloud data acquisition unit 122 acquires three-dimensional point cloud data of the construction site acquired by the laser scanner 18. In this embodiment, the point cloud data acquisition unit 122 acquires three-dimensional point cloud data of the construction site by reading the three-dimensional point cloud data acquired by the laser scanner 18 during the automatic patrol of the automatic patrol vehicle 14 (or during patrol by a worker) from the memory of the laser scanner 18 or by transmitting the data from the laser scanner 18. The acquired three-dimensional point cloud data is stored in the memory area of the work support device 12 and is used for various processes described below.

The data comparison unit 124 compares the BIM model (three-dimensional design data of the construction object at the construction site) with the three-dimensional point cloud data acquired by the point cloud data acquisition unit 122.
Because the BIM model contains all of the components that make up the construction object, even when compared with 3D point cloud data during construction, there should be components that correspond to each point.
For example, when comparing point cloud data obtained by scanning a wall with its core exposed with a BIM model, the position of the core scanned as the point cloud roughly matches the position of the core on the BIM model.
Therefore, the data comparison unit 124 compares the 3D point cloud data corresponding to the same area on the construction site with the BIM model, and determines whether or not a point cloud exists within the existence range of each component.

Then, the data comparison unit 124 classifies each component model (each component that constitutes the construction object) that constitutes the BIM model into the following three states.
1. Not started: There is no point cloud data in the area where the part of interest exists.
2. Completed: The error between the shape of the target part and the shape of the point cloud data of that part falls within a specified range.
3. In progress: The error between the shape of the target part and the shape of the point cloud data of that part is not within a predetermined range, but the point cloud data exists within the range in which the target part exists.
In order to prevent errors in classification judgment, the classification results of the components by the data comparison unit 124 (particularly for "completed") may be approved after a work manager or the like actually checks the work status of the components.

The notes presentation unit 126 extracts notes related to the work to be performed at the construction site from the notes memory unit 120A based on the comparison results of the data comparison unit 124, and presents them to workers engaged in work at the construction site.
The caution presentation unit 126 extracts cautions registered in part models classified as "in process" and "not started," for example. The work manager (or worker) selects cautions to be presented at the current meeting (morning meeting or afternoon meeting) from the extracted cautions according to the progress of work at the site. In addition, for example, the caution presentation unit 126 may identify components scheduled for work on the day based on a predetermined work schedule (work schedule data registered in the work support device 12) and extract cautions associated with the components.

Furthermore, the notice presentation unit 126 presents the extracted notices to workers engaged in work at the construction site.
The precaution presentation unit 126 presents precautions by, for example, developing the BIM model into floor plans for each floor and outputting materials showing the precautions extracted by the above method in speech bubbles starting from components on the floor plans. These floor plans (materials) may be printed out on printing paper, for example, or may be displayed on the display 12A (see FIG. 1) of the work support device 12. For example, during a meeting, a work manager may convey the precautions to workers while looking at the printed out floor plans.
Alternatively, the method of presenting the notice by the notice presenting unit 126 may be any of various conventionally known methods, such as transmitting the notice to a portable information terminal carried by each worker.

The caution registration unit 128 associates new cautions with component models in the BIM model.
For example, when a work manager or worker notices an issue requiring attention at an actual construction site, the work manager or worker registers the attention by specifying the component in the attention registration unit 128. Also, for example, if an accident or malfunction occurs at the construction site despite the attention being given, the attention is registered as a new attention for the location (the component corresponding to the location) for the next time onwards.
For example, when the caution registration unit 128 receives new cautions from a work manager or a worker, the caution registration unit 128 includes the cautions in a designated component model in the BIM model. The caution registration unit 128 may also update the BIM model of the construction object stored in the past design data 160 of the design data creation device 16, so that the cautions registered this time can be reflected in the next and subsequent design data.

FIG. 3 is a diagram showing a flow of work support in the construction work support system.
The designer creates a BIM model (three-dimensional design data) of the current construction object while using the past design data 160 (including notes) of the design data creation device 16 (step S300). The created BIM model is stored in the work support device 12 installed at the construction site of the construction object (step S302). The BIM model is also stored in the design data creation device 16 as the past design data 160.

When construction work begins, the automated patrol vehicle 14 periodically patrols the construction site, scans the surroundings with the laser scanner 18, and acquires point cloud data within the construction site (step S304). As described above, this step may be performed by a worker or the like patrolling the construction site with the laser scanner 18, rather than by automated patrol.

Next, the point cloud data acquisition unit 122 of the work support device 12 (work support device) reads the point cloud data acquired by the laser scanner 18 and acquires the point cloud data from the current scan (hereinafter referred to as "current scan data") and image data (step S306). Steps S304 and S306 correspond to the point cloud data acquisition process.

The acquired current scan data is pre-processed as necessary, such as by removing noise and unifying coordinate axes (step S308). That is, in order to compare it with the BIM model later, unnecessary parts such as temporary handrails, scaffolding, and temporarily placed materials are deleted from the point cloud data, and the coordinate systems (origin, scale, direction) of both are matched. This process may be performed manually by a worker or automatically by an application on the work support device 12.

The data comparison unit 124 compares the current scan data with the BIM model, and classifies each component in the BIM model into one of the following states: not started, completed, or in progress (step S310: data comparison process).
Next, the caution presentation unit 126 extracts cautions registered in the part models classified as "in process" and "not started," and further selects cautions to be presented by the work manager at the current meeting (step S312). Then, the caution presentation unit 126 outputs materials showing the cautions on floor plans for each floor (step S314). The work manager or the like calls the attention of the workers while looking at the materials, for example. Alternatively, the workers may directly look at the materials to check the caution points.

When new notes are registered for the work support device 12, the notes registration unit 128 associates the notes with the component model in the BIM model (step S316: notes registration process). The notes registration unit 128 also updates the BIM model of the construction object stored in the past design data 160 of the design data creation device 16 with the BIM model to which the new notes have been added, thereby reflecting the addition of the notes (step S318).

As described above, the construction work assistance system 10 according to the embodiment presents precautions related to the work to be performed based on the comparison result between the 3D design data of the construction object and the 3D point cloud data of the actual construction site. This is advantageous in accurately selecting and presenting precautions that are in line with the actual construction site conditions.
At construction sites, work-related warnings are issued daily, and preparations for these warnings can be a heavy burden for work managers and workers. By automatically extracting warnings using the construction work support system 10, the burden on work managers and workers can be reduced, allowing them to spend more time on other tasks, which is advantageous in improving productivity at construction sites.
Furthermore, in this embodiment, since precautions are associated with the component models of the 3D design data, precautions can be set on a component-by-component basis, enabling more detailed warnings to be issued, which is advantageous in improving safety at construction sites.
Furthermore, by reusing the 3D design data when designing other structures, important points can be easily transferred, which is advantageous in reducing the burden on work managers, designers, etc.
Furthermore, acquiring three-dimensional point cloud data using an automatic patrol vehicle 14 as in this embodiment is advantageous in reducing the burden on workers and improving the efficiency of construction work compared to workers patrolling the construction site and performing the scanning.

REFERENCE SIGNS LIST 10 Construction work support system 12 Work support device 120 BIM model storage unit 120A Notes storage unit 122 Point cloud data acquisition unit 124 Data comparison unit 126 Notes presentation unit 128 Notes registration unit 14 Automatic patrol vehicle 16 Design data creation device 160 Previous design data 18 Laser scanner

Claims (1)

A construction work support method for supporting work at a construction site, comprising:
a design data creation process for creating three-dimensional design data including precautions for performing work on each member constituting a construction object at the construction site by using past design data, which is three-dimensional design data of a construction object previously constructed;
a point cloud data acquisition step of acquiring three-dimensional point cloud data of the construction site by a laser scanner;
a data comparison step of comparing three-dimensional design data of a construction object at the construction site with the three-dimensional point cloud data;
a notice presentation step of extracting, based on a comparison result in the data comparison step, notices for the components related to the work to be performed at the construction site from the three-dimensional design data storage unit, and presenting the notices to workers engaged in the work at the construction site;
A construction work support method comprising:

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