Visual measurement method and device for three-dimensional laser scanning earthwork balance

Abstract

The invention relates to the technical field of engineering measurement, and discloses a three-dimensional laser scanning earthwork balance visual measurement method and device, and the method comprises the steps: obtaining a building information model, and processing the building information model through an augmented reality technology, and obtaining an underground model corresponding to the building information model; capturing a plurality of key nodes of the underground model, and determining a corresponding key node site position in the to-be-constructed site according to the key nodes; and obtaining a point cloud model of the to-be-constructed site, and determining the earthwork volume of the building information model in combination with the underground model and the key node site position. According to the three-dimensional laser scanning earthwork balance visual measurement method provided by the invention, the three-dimensional laser scanning technology and the BIM model are integrated, seamless joint between the construction site and the virtual model is realized by using the augmented reality technology, earthwork balance calculation is automatically carried out, personal errors are reduced, the project cost is reduced, and the working efficiency is improved. The working efficiency and the management level of earthwork are improved, and unnecessary resource waste is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering measurement, and in particular to a three-dimensional laser scanning earthwork balance visualization measurement method and device. Background Art

[0002] As modern construction projects continue to grow in scale and complexity, traditional earthwork measurement and balance calculation methods are no longer able to meet the demands for efficiency and accuracy. Traditional methods rely on manual measurement and calculations, primarily relying on the matching of total stations with blueprints. This requires manual positioning of each key coordinate point, making them inefficient and error-prone, especially when dealing with large construction sites or those with complex terrain. These limitations can lead to cost overruns, schedule delays, and inaccurate environmental impact assessments. Furthermore, traditional earthwork measurement methods lack the frequency and accuracy of data updates, making them ineffective for reliable real-time decision-making.

[0003] In recent years, with the development of information technology, Building Information Modeling (BIM) and 3D laser scanning technologies have been introduced into earthwork projects, significantly improving measurement accuracy and efficiency. However, effectively integrating BIM and 3D laser scanning with actual on-site conditions remains a challenge. For example, factors such as the original topography, designed topography, and cut-and-fill volumes significantly impact the accuracy of earthwork balance calculations. Existing technologies are unable to effectively integrate BIM and 3D laser scanning with actual on-site conditions to improve measurement efficiency while ensuring accuracy. Summary of the Invention

[0004] In view of this, the present invention provides a three-dimensional laser scanning earthwork balance visualization measurement method and device to solve the problem that BIM and three-dimensional laser scanning technology cannot be effectively combined with the actual situation on site and the on-site earthwork measurement is inaccurate.

[0005] In a first aspect, the present invention provides a three-dimensional laser scanning earthwork balance visualization measurement method, the method comprising:

[0006] Obtain a building information model, and process the building information model using augmented reality technology to obtain an underground model corresponding to the building information model;

[0007] Capture multiple key nodes of the underground model and determine the corresponding key node locations in the construction site based on the key nodes;

[0008] Obtain a point cloud model of the construction site and determine the earthwork volume of the building information model based on the underground model and the on-site locations of key nodes.

[0009] The 3D laser scanning earthwork balance visualization measurement method provided by the present invention integrates 3D laser scanning technology and BIM models, utilizes augmented reality technology to achieve seamless connection between the construction site and the virtual model, automatically performs earthwork balance calculations, reduces human errors, reduces project costs, improves work efficiency and the management level of earthwork projects, and reduces unnecessary waste of resources.

[0010] In an optional embodiment, the building information model is processed using augmented reality technology to obtain an underground model corresponding to the building information model, including:

[0011] Upload the building information model to the augmented reality platform;

[0012] According to the elevation data and construction zones of the building information model, the building information model is divided into regions according to preset cutting rules to obtain multiple sub-units;

[0013] Multiple sub-units are integrated to obtain the underground model corresponding to the building information model.

[0014] The three-dimensional laser scanning earthwork balance visualization measurement method provided by the present invention uses digital three-dimensional laser scanning technology to quickly complete large-area earthwork scanning, combines building information modeling and augmented reality technology to construct a high-precision underground model, and divides the underground model into regions, reducing the pressure of augmented reality processing and improving data processing speed and accuracy.

[0015] In an optional embodiment, determining the corresponding on-site location of the key node in the construction site according to the key node includes:

[0016] Create positioning QR codes based on key nodes;

[0017] Conduct a survey on the construction site to determine the scope of the construction red line and determine the location of key nodes based on the red line scope;

[0018] Place positioning poles at key node locations and post positioning QR codes corresponding to key node locations on the positioning poles.

[0019] In an optional embodiment, the method further includes:

[0020] Use a handheld device to scan the positioning QR code to obtain a field model of the underground model at the construction site;

[0021] Determine the area to be excavated based on the site model and the actual terrain of the construction site.

[0022] The three-dimensional laser scanning earthwork balance visualization measurement method provided by the present invention utilizes augmented reality technology combined with positioning QR codes to provide real-time visualization of construction sites and buildings. Construction personnel can directly view the excavation and backfilling of earthwork at the construction site, and grasp the earthwork balance status in real time, effectively avoiding erroneous operations during construction, ensuring construction safety, and optimizing the entire construction management process.

[0023] In an optional embodiment, obtaining a point cloud model of a construction site includes:

[0024] Determine the terrain type of the construction site and select a 3D scanning measuring instrument based on the terrain type;

[0025] The selected 3D scanning measuring instrument is used to measure and process the construction site to obtain a point cloud model of the construction site.

[0026] In an optional embodiment, the construction site is measured and processed using a selected three-dimensional scanning measuring instrument, including:

[0027] Use the selected 3D scanning measuring instrument to measure the construction site and obtain a point cloud earthwork model;

[0028] The bottom elevation of the point cloud earthwork model is determined according to the bottom elevation of the underground model, and the non-earthwork part in the point cloud earthwork model is cleared to obtain a point cloud model reflecting the earthwork volume.

[0029] The three-dimensional laser scanning earthwork balance visualization measurement method provided by the present invention determines the three-dimensional scanning measurement method according to the terrain type, which facilitates more efficient and accurate acquisition of terrain data of the construction site. The bottom elevation of the point cloud earthwork model is determined by combining the bottom elevation of the augmented reality technology, and then a point cloud model of the construction site that reflects the earthwork volume is obtained, thereby improving the accuracy and efficiency of earthwork calculation.

[0030] In an optional embodiment, determining the earthwork volume of the building information model in combination with the underground model and the on-site locations of key nodes includes:

[0031] If the project construction requirement is to calculate the earthwork volume of the target underground model at the construction site, the earthwork volume of the target underground model is calculated based on the target underground model and the on-site location of key nodes;

[0032] If the project construction requirement is to calculate the earthwork volume of the target area in the construction site, then determine the underground model in the target area and the corresponding key node site locations;

[0033] The earthwork volume of the target area is calculated based on the point cloud model of the target area, the underground model within the target area and the corresponding key node on-site locations.

[0034] The three-dimensional laser scanning earthwork balance visualization measurement method provided by the present invention calculates the overall earthwork volume of the target area or the earthwork volume corresponding to a single building according to the project construction requirements, greatly shortening the measurement time and improving construction efficiency. It enables earthwork allocation during the construction process to be carried out more timely and reasonably, reduces unnecessary earthwork transportation, and reduces project costs.

[0035] In a second aspect, the present invention provides a three-dimensional laser scanning earthwork balance visualization measurement device, the device comprising:

[0036] A model processing module is used to obtain a building information model and process the building information model using augmented reality technology to obtain an underground model corresponding to the building information model;

[0037] The key node positioning module is used to capture multiple key nodes of the underground model and determine the corresponding key node on-site locations in the construction site based on the key nodes;

[0038] The earthwork volume calculation module is used to obtain the point cloud model of the construction site and determine the earthwork volume of the building information model in combination with the underground model and the on-site locations of key nodes.

[0039] In a third aspect, the present invention provides a computer device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the method of the first aspect or any corresponding embodiment thereof by executing the computer instructions.

[0040] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the method of the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 3D laser scanning earthwork balance visualization measurement method according to an embodiment of the present invention;

[0043] Figure 2 is a flow chart of another method for visual measurement of earthwork balance using three-dimensional laser scanning according to an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of the construction site obtained by scanning and positioning a QR code in a visual measurement method for earthwork balance using three-dimensional laser scanning according to an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of an on-site AR model obtained by scanning and locating a QR code in a three-dimensional laser scanning earthwork balance visualization measurement method according to an embodiment of the present invention, after the underground model is placed on the construction site;

[0046] Figure 5 This is a complete flow chart of a specific embodiment of a visual measurement method for earthwork balance using three-dimensional laser scanning according to an embodiment of the present invention;

[0047] Figure 6 3D laser scanning earthwork balance visualization measurement device according to an embodiment of the present invention;

[0048] Figure 7 Schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0050] The embodiment of the present invention provides a visualization measurement method for earthwork balance using three-dimensional laser scanning, which achieves seamless connection between the construction site and the virtual model by utilizing augmented reality technology, thereby improving the accuracy and efficiency of earthwork measurement.

[0051] According to an embodiment of the present invention, an embodiment of a visualization measurement method for earthwork balance using three-dimensional laser scanning is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0052] In this embodiment, a three-dimensional laser scanning earthwork balance visualization measurement method is provided, which can be used in the above-mentioned computer system. Figure 1 FIG. 1 is a flow chart of a visualization measurement method for three-dimensional laser scanning earthwork balance according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0053] Step S101: Acquire a building information model, and process the building information model using augmented reality technology to obtain an underground model corresponding to the building information model.

[0054] Specifically, according to the project design drawings, the building information model (Building Information Modeling, BIM) is completed in the design phase. The BIM model can be a three-dimensional model of the building to be built, as an example only, but not limited to this. Earthwork balance is to determine the planned amount of earth to be transported in and out by calculating the amount of earth that needs to be excavated at the high places and the amount of earth that needs to be filled in the low places of the construction site. The more accurate the calculation of the amount of earth that needs to be excavated at the high places and the amount of earth that needs to be filled in the low places of the construction site, the less the planned amount of earth to be transported in and out. When planning the foundation excavation construction, the work of minimizing the amount of earth transported in and out is not only related to the earthwork cost, but also has a great impact on the site layout. Therefore, in the BIM model design phase, focus on completing the modeling work of the underground part, and deepen it simultaneously to facilitate more accurate earthwork measurement.

[0055] For BIM models, augmented reality (AR) technology is used to process them into a visual virtual building model. In earthwork measurement, the main focus is on the basement of the building, so the underground part of the virtual building model can be processed to obtain the underground model corresponding to the BIM model. It should be noted that the BIM model is a three-dimensional model opened and viewed in the building information modeling software. It is processed by augmented reality to obtain a virtual building model that can be placed in the real environment.

[0056] Step S102 , capturing multiple key nodes of the underground model, and determining the corresponding on-site locations of the key nodes in the construction site according to the key nodes.

[0057] Specifically, for the processed virtual underground model, multiple key nodes are captured. These key nodes are used to assist in locating the position of the entire virtual underground model. Therefore, at least three non-collinear key nodes are required. For example, if the virtual underground model is a two-story villa, the key node can be selected at the interface between the first floor of the villa and the underground floor, and the multiple key nodes are not collinear. This is only an example, but not limited to this. Based on the position of the key node in the virtual underground model and the position of the to-be-built building corresponding to the virtual underground model at the to-be-built site, the on-site position of the key node at the to-be-built site is determined, and the virtual underground model is used to replace the real building to be displayed at the to-be-built site.

[0058] Step S103: obtaining a point cloud model of the construction site, and determining the earthwork volume of the building information model in combination with the underground model and the on-site locations of key nodes.

[0059] Specifically, a point cloud model of the construction site can be acquired using various data collection methods. This can be combined with the underground model and key nodes to determine the exact location of the underground model within the construction site. The exact location of the underground model within the construction site and the earthwork data at the corresponding location can then be used to determine the amount of earthwork that needs to be excavated or filled. Areas higher than the lowest point of the underground model require excavation, while areas lower than the lowest point require filling. For easier calculation, the amount of earthwork to be excavated can be treated as a positive number, while the amount of earthwork to be filled can be treated as a negative number.

[0060] The three-dimensional laser scanning earthwork balance visualization measurement method provided in this embodiment integrates three-dimensional laser scanning technology and BIM models, utilizes augmented reality technology to achieve seamless connection between the construction site and the virtual model, automatically performs earthwork balance calculations, reduces human errors, reduces project costs, improves work efficiency and the management level of earthwork projects, and reduces unnecessary waste of resources.

[0061] In this embodiment, a three-dimensional laser scanning earthwork balance visualization measurement method is provided, which can be used in the above-mentioned computer system. Figure 2 FIG. 1 is a flow chart of a visualization measurement method for three-dimensional laser scanning earthwork balance according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0062] Step S201: Acquire a building information model, and process the building information model using augmented reality technology to obtain an underground model corresponding to the building information model.

[0063] Specifically, the above step S201 includes:

[0064] Step S2011: Upload the building information model to the augmented reality platform.

[0065] Specifically, the BIM overall model after in-depth processing is uploaded to the augmented reality platform. The augmented reality platform can be an AR cloud system, which is only used as an example but not limited to this.

[0066] Step S2012: Based on the elevation data and construction zones of the building information model, the building information model is divided into regions according to preset cutting rules to obtain a plurality of sub-units.

[0067] Specifically, BIM modeling software can be used to determine the elevation data of the BIM model. The BIM model can then be partitioned according to the construction sequence, and the elevation data can be used to determine relevant basement data. For example, if the bottom elevation of a BIM model is -10m, then the underground portion of the building corresponding to the BIM model is 10m. The basement can be defined as 10m upwards from the bottom of the BIM model. If the basement is further divided into the first and second basement floors, each floor can also be divided into parking areas, equipment areas, civil air defense areas, etc. Each parking area can be considered a subunit, for example, but not limited to this.

[0068] Step S2013: Integrate the multiple sub-units to obtain an underground model corresponding to the building information model.

[0069] Specifically, the area division is mainly to distinguish blocks and reduce the processing pressure of the AR platform. When the AR platform performs augmented reality processing on the BIM model, it processes it in sub-units, and then integrates the processing results of each sub-unit to obtain a virtual building model corresponding to the building information model. In this embodiment, the main research is earthwork measurement, so the underground model can be screened out from the virtual building model.

[0070] The three-dimensional laser scanning earthwork balance visualization measurement method provided in this embodiment uses digital three-dimensional laser scanning technology to quickly complete large-area earthwork scanning, combines building information modeling and augmented reality technology to construct a high-precision underground model, and divides the underground model into regions, thereby reducing the pressure of augmented reality processing and improving data processing speed and accuracy.

[0071] Step S202 , capturing multiple key nodes of the underground model, and determining the corresponding on-site locations of the key nodes in the construction site according to the key nodes.

[0072] Specifically, the above step S202 includes:

[0073] Step S2021, create a positioning QR code based on the key nodes.

[0074] Specifically, key nodes that are easy to locate are selected in the building information model, such as the coordinate positions of the corner vertices and the coordinate positions of the red line corner points of a square building, which are examples only and not limited to this, and a positioning QR code is created based on the key node. The positioning QR code includes an underground model with the key node as the origin. For example, the southeast corner of the basement of a building on the ground plane is taken as the key node, and a positioning QR code for the southeast corner is created. When the positioning QR code of the southeast corner is scanned with special software, the virtual model seen is the underground model seen from the perspective of the southeast corner, which is examples only and not limited to this.

[0075] Step S2022: Survey the construction site to be constructed, determine the scope of the construction red line, and determine the on-site location of key nodes based on the red line scope.

[0076] Specifically, by surveying the construction site, determining the construction red line range, ensuring the legality of the construction, determining the building location based on the red line range and the project design drawings, and then determining the key node on-site locations based on the building location and the key nodes in the underground model, the underground model can be fixed to the construction site using at least three key node on-site locations.

[0077] Step S2023: Place a positioning pole at the on-site location of the key node, and post a positioning QR code corresponding to the on-site location of the key node on the positioning pole.

[0078] Specifically, positioning rods are placed at corresponding locations in the construction site based on the determined key node locations (the positioning rods can be pillars or wooden blocks, for example only, but not limited to this), and positioning QR codes corresponding to the key node locations are posted on the positioning rods, so that the underground model and the terrain of the construction site are overlapped. For example, if the key nodes of the underground model are the southeast corner, northeast corner, and southwest corner, the positioning QR code generated for the southeast corner will be posted on the positioning rod corresponding to the southeast corner location. The same applies to the other two points, which will not be repeated here.

[0079] In some optional embodiments, the method further comprises:

[0080] Step b1: Use a handheld device to scan and locate the QR code to obtain a field model of the underground model at the construction site.

[0081] Specifically, during the actual construction process, a handheld device equipped with professional software can be used to scan the positioning QR code, and the on-site AR model of the underground model and the terrain of the construction site to be overlapped can be seen from the perspective of the key node corresponding to the positioning QR code. Figure 3 As shown in the figure, it is a schematic diagram of the construction site. Figure 4 The figure below shows the AR model of the site after scanning the positioning QR code and placing the underground model on the construction site. Figure 3 and Figure 4 By comparison, it can be seen that in this embodiment, the status of the building after construction can be viewed by scanning the positioning QR code before construction, which can assist construction workers in making more intuitive observations and decisions.

[0082] In addition to pre-construction planning, BIM+AR models can also be used for on-site positioning and viewing. After the earthwork development is completed, the overall excavation effect can be verified to ensure that it is consistent with the point cloud model.

[0083] Step b2: Determine the area to be excavated based on the site model and the actual terrain of the construction site.

[0084] Specifically, the on-site AR model can be used to observe and analyze whether the excavation area contains hillsides, puddles, woods, etc., preliminarily analyze the required excavation or filling areas, and preliminarily determine the key excavation areas.

[0085] The three-dimensional laser scanning earthwork balance visualization measurement method provided in this embodiment uses augmented reality technology combined with positioning QR codes to provide real-time visualization of construction sites and buildings. Construction personnel can directly view the excavation and backfilling of earthwork at the construction site, and grasp the earthwork balance status in real time, effectively avoiding erroneous operations during construction, ensuring construction safety, and optimizing the entire construction management process.

[0086] Step S203: obtaining a point cloud model of the construction site, and determining the earthwork volume of the building information model in combination with the underground model and the on-site locations of key nodes.

[0087] Specifically, the point cloud model of the construction site to be obtained in the above step S203 includes:

[0088] Step S2031: determine the terrain type of the construction site and select a three-dimensional scanning measurement instrument according to the terrain type.

[0089] Specifically, a reliable 3D scanning and measuring instrument is selected according to the type of on-site terrain. Specifically, if the construction site is large and the terrain is complex, drones are preferred for 3D laser scanning. For blank areas caused by the large and complex terrain, a station-type 3D laser scanner is selected for key supplementation. If the construction site is large and the terrain is complex, but the construction site is a no-fly zone, a handheld 3D laser scanner is selected for scanning. For blank areas that are difficult to reach on foot or have accumulated water and are inconvenient to pass through, a station-type 3D laser scanner is selected for key supplementation. If the construction site is small, a station-type 3D laser scanner is selected for measurement. If the construction site is large and the terrain is flat, a handheld 3D laser scanner is selected for measurement. You can also select instruments that can perform terrain scanning measurements in mature existing technologies for 3D scanning measurements, which will not be discussed here.

[0090] Step S2032: Use the selected three-dimensional scanning measuring instrument to measure and process the construction site to be constructed, and obtain a point cloud model of the construction site.

[0091] Specifically, the selected 3D scanning measuring instrument is used to measure and process the data of the construction site to construct a point cloud model of the construction site. This process is related to the use of the 3D scanning measuring instrument and belongs to the existing technology, so it will not be repeated here.

[0092] In some optional implementations, determining the earthwork volume of the building information model in combination with the underground model and the on-site locations of key nodes in step S203 includes:

[0093] Step S2033: If the project construction requirement is to calculate the earthwork volume of the target underground model in the construction site, the earthwork volume of the target underground model is calculated based on the target underground model and the on-site locations of key nodes.

[0094] Specifically, during the actual project construction process, the scanned point cloud model and the underground model of the corresponding location at the actual construction site are imported into special earthwork calculation software for processing, and the desired earthwork volume can be directly calculated.

[0095] According to the project construction requirements, such as when conducting underground stage construction in sections, sub-item measurements can be carried out on the required parts or the basement area of ​​a certain building unit. After confirming that the on-site points are correct with the model, the positioning QR code is installed, and the local earthwork volume is measured and calculated to assist the project in construction organization and arrangement, and facilitate on-site coordination of waste soil transportation vehicles.

[0096] Step S2034: If the project construction requirement is to calculate the earthwork volume of the target area in the construction site, then determine the underground model in the target area and the corresponding key node site locations.

[0097] Specifically, since the project construction period may be very long, during the project planning stage, the method provided in this embodiment can be used to calculate the amount of earthwork that needs to be excavated or filled for the entire project in order to conduct cost budgeting and overall planning. The overall earthwork volume is the amount of earthwork that needs to be excavated or filled underground for each building in the entire project.

[0098] You can also select the earthwork volume of each subunit according to your needs. Select the subunit you want to measure in the earthwork calculation software to automatically calculate the earthwork volume of the subunit.

[0099] Step S2035 , calculating the earthwork volume of the target area based on the point cloud model of the target area, the underground model within the target area, and the corresponding key node on-site locations.

[0100] Specifically, you can select the target area for which you want to calculate the earthwork volume in a special earthwork calculation software, and directly calculate the overall earthwork volume of the target area or the earthwork volume of each building unit. The specific calculation process is a mature existing technology and will not be repeated here.

[0101] The earthwork calculation data of the entire construction project can be uploaded to the cloud for storage and reference.

[0102] In some optional implementations, the above step S2032 includes:

[0103] Step c1: Use the selected three-dimensional scanning measuring instrument to measure the construction site to obtain a point cloud earthwork model.

[0104] Specifically, after measuring the construction site using the selected 3D scanning measuring instrument, the measurement results are compared with the underground model, focusing on determining the point cloud earthwork model that is consistent with the actual position of the underground model on site.

[0105] In step c2, the bottom elevation of the point cloud earthwork model is determined according to the bottom elevation of the underground model, and the non-earthwork part in the point cloud earthwork model is cleared to obtain a point cloud model reflecting the earthwork volume.

[0106] Specifically, the bottom elevation of the underground model is the height between the bottom and top of the underground part in the underlying model. For example, if the bottom elevation of the underground model is -10m, it means that there should be no drawings 10m below the ground, that is, the bottom elevation of the point cloud earthwork model is also -10m. In the actual point cloud earthwork model, the part above -10m needs to be dug out, and the part below -10m needs to be filled.

[0107] When measuring the point cloud model, it is necessary to remove non-earthwork parts such as weeds, shrubs, and accumulated water in the point cloud earthwork model to highlight the point cloud model that simply reflects the earthwork volume, so as to ensure a more accurate calculation of the earthwork volume.

[0108] The three-dimensional laser scanning earthwork balance visualization measurement method provided in this embodiment determines the three-dimensional scanning measurement method according to the terrain type, which facilitates more efficient and accurate acquisition of terrain data of the construction site. The bottom elevation of the point cloud earthwork model is determined by combining the bottom elevation of the augmented reality technology, and then a point cloud model of the construction site that reflects the earthwork volume is obtained, thereby improving the accuracy and efficiency of earthwork calculations.

[0109] In one embodiment, Figure 5 The figure shows a complete flow chart of the visualization measurement method for earthwork balance using 3D laser scanning. Workers create a BIM model based on the design CAD drawings, then upload the BIM model to the AR platform to obtain an AR model (equivalent to an underground model in earthwork calculations). Positioning QR codes are then created based on the key nodes in the AR model. The construction red line range is determined through on-site environmental surveys, and corresponding QR codes are posted on-site according to the on-site locations of key nodes. The AR model is overlapped with the construction site, and the underground construction area is displayed through AR. The on-site terrain of the underground construction area is analyzed and combined with the BIM model to quickly locate the area requiring earthwork measurement. A 3D scanning measuring instrument is selected based on the terrain type, and an earthwork point cloud model is determined based on the measurement results. The model is then imported into the earthwork balance software (earthwork measurement software) to calculate the precise earthwork volume. The earthwork volume calculation results are combined to assist in deepening the construction resistance design plan, and the BIM model is combined with on-site positioning for review and construction inspection.

[0110] This embodiment also provides a 3D laser scanning earthwork balance visualization measurement device, which is used to implement the above-mentioned embodiments and preferred embodiments. Details already described will not be repeated here. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0111] This embodiment provides a three-dimensional laser scanning earthwork balance visualization measurement device, such as Figure 6 Shown, including:

[0112] The model processing module 601 is used to obtain a building information model and process the building information model using augmented reality technology to obtain an underground model corresponding to the building information model.

[0113] The key node positioning module 602 is used to capture multiple key nodes of the underground model and determine the corresponding on-site positions of the key nodes in the construction site based on the key nodes.

[0114] The earthwork volume calculation module 603 is used to obtain the point cloud model of the construction site and determine the earthwork volume of the building information model in combination with the underground model and the on-site locations of key nodes.

[0115] In some optional implementations, the model processing module 601 includes:

[0116] The model uploading unit is used to upload the building information model to the augmented reality platform.

[0117] The area division unit is used to divide the building information model into areas according to the elevation data and construction zones of the building information model and preset cutting rules to obtain multiple sub-units.

[0118] The sub-unit integration unit is used to integrate multiple sub-units to obtain an underground model corresponding to the building information model.

[0119] In some optional implementations, the key node positioning module 602 includes:

[0120] The QR code creation unit is used to create a positioning QR code based on key nodes.

[0121] The key node on-site confirmation unit is used to survey the construction site, determine the construction red line range, and determine the on-site location of the key nodes based on the red line range.

[0122] The QR code posting unit is used to place a positioning rod at the on-site location of the key node, and post a positioning QR code corresponding to the on-site location of the key node on the positioning rod.

[0123] In some optional implementations, the earthwork volume calculation module 603 includes:

[0124] The scanning measuring instrument selection unit is used to scan and determine the terrain type of the construction site and select a three-dimensional scanning measuring instrument according to the terrain type.

[0125] The measurement and processing unit is used to measure and process the construction site using the selected three-dimensional scanning measuring instrument to obtain a point cloud model of the construction site.

[0126] The single earthwork measurement unit is used to calculate the earthwork volume of the target underground model at the construction site if the project construction requirement is to calculate the earthwork volume of the target underground model based on the target underground model and the on-site location of key nodes.

[0127] The overall earthwork measurement unit is used to determine the underground model and corresponding key node on-site locations within the target area if the project construction requirement is to calculate the earthwork volume of the target area in the construction site.

[0128] The overall earthwork volume calculation unit is used to calculate the earthwork volume of the target area based on the point cloud model of the target area, the underground model within the target area and the corresponding key node on-site positions.

[0129] In some optional implementations, the measurement processing unit includes:

[0130] The earthwork measurement unit is used to measure the construction site using the selected 3D scanning measurement instrument to obtain a point cloud earthwork model.

[0131] The non-earthwork processing unit is used to determine the bottom elevation of the point cloud earthwork model according to the bottom elevation of the underground model, and to clear the non-earthwork part in the point cloud earthwork model to obtain a point cloud model that reflects the earthwork volume.

[0132] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0133] The three-dimensional laser scanning earthwork balance visualization measurement device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0134] The embodiment of the present invention also provides a computer device having the above Figure 6 The 3D laser scanning earthwork balance visualization measurement device shown.

[0135] See also Figure 7 , Figure 7 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 7 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 7 A processor 10 is taken as an example.

[0136] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0137] The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0138] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0139] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0140] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0141] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0142] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A three-dimensional laser scanning earthwork balance visualization measurement method, characterized in that: The method comprises: Acquire a building information model, and process the building information model using augmented reality technology to obtain an underground model corresponding to the building information model; Capturing a plurality of key nodes of the underground model, and determining the on-site locations of corresponding key nodes in the construction site according to the key nodes; Obtain a point cloud model of the construction site, and determine the earthwork volume of the building information model in combination with the underground model and the on-site locations of key nodes.

2. The method according to claim 1, characterized in that The method of processing the building information model using augmented reality technology to obtain an underground model corresponding to the building information model includes: Uploading the building information model to an augmented reality platform; According to the elevation data and construction zones of the building information model, the building information model is divided into regions according to preset cutting rules to obtain a plurality of sub-units; The multiple sub-units are integrated to obtain an underground model corresponding to the building information model.

3. The method according to claim 1, characterized in that Determining the corresponding on-site location of the key node in the construction site according to the key node includes: Creating a positioning QR code based on the key nodes; Conduct a survey of the construction site to determine the scope of the construction red line, and determine the location of key nodes on site based on the red line scope; Place positioning poles at key node locations and post positioning QR codes corresponding to key node locations on the positioning poles.

4. The method according to claim 3, characterized in that The method further comprises: Scan the positioning QR code with a handheld device to obtain a field model of the underground model at the construction site; The area to be excavated is determined based on the site model and the actual topography of the construction site.

5. The method according to claim 1, characterized in that Obtain a point cloud model of the construction site, including: Determine the terrain type of the construction site and select a 3D scanning measurement instrument based on the terrain type; The selected 3D scanning measuring instrument is used to measure and process the construction site to obtain a point cloud model of the construction site.

6. The method according to claim 5, characterized in that The use of the selected three-dimensional scanning measuring instrument to measure and process the construction site includes: Use the selected 3D scanning measuring instrument to measure the construction site and obtain a point cloud earthwork model; The bottom elevation of the point cloud earthwork model is determined according to the bottom elevation of the underground model, and the non-earthwork part in the point cloud earthwork model is cleared to obtain a point cloud model reflecting the earthwork volume.

7. The method according to claim 5, characterized in that Determine earthwork quantities for the building information model based on the underground model and key site locations, including: If the project construction requirement is to calculate the earthwork volume of the target underground model at the construction site, the earthwork volume of the target underground model is calculated based on the target underground model and the on-site location of key nodes; If the project construction requirement is to calculate the earthwork volume of the target area in the construction site, then determine the underground model in the target area and the corresponding key node site locations; The earthwork volume of the target area is calculated based on the point cloud model of the target area, the underground model within the target area and the corresponding key node on-site locations.

8. A three-dimensional laser scanning earthwork balance visualization measurement device, characterized in that: The device comprises: A model processing module is used to obtain a building information model and process the building information model using augmented reality technology to obtain an underground model corresponding to the building information model; A key node positioning module is used to capture multiple key nodes of the underground model and determine the corresponding key node on-site locations in the construction site according to the key nodes; The earthwork volume calculation module is used to obtain the point cloud model of the construction site and determine the earthwork volume of the building information model in combination with the underground model and the on-site locations of key nodes.

9. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the method according to any one of claims 1 to 7.

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