JP2017204222A - Management device, management method, and program for management - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management device, management method, and program for management for efficiently performing management of building work and a building.SOLUTION: A design management device 100 comprises: a scan data acquisition part 105 that acquires three-dimensional information on a building: a correspondence relationship specification part that specifies the correspondence relationship between a first three-dimensional model based on design data and a second three-dimensional model based on the three-dimensional information; and a design data update part 109 that updates the design data on a portion where the correspondence relationship has been specified.SELECTED DRAWING: Figure 1

Description

  The present invention can be used, for example, for management of construction work.

  In the construction work site, it is necessary to check whether the work is performed as designed. As a method for improving the efficiency of this work, a method using a laser scanner is known (see, for example, Patent Document 1).

JP 2005-213972 A

  In the construction work site, it is indispensable to confirm whether or not the construction is performed according to the drawings, but this work is complicated. In addition, design changes are frequently made at the construction site, but the confirmation and correction work is complicated and the work efficiency is poor. In addition, it is necessary to check the finished part on the design drawing and always prepare the latest design drawing, but this work is also complicated. In such a background, an object of the present invention is to provide a technique capable of efficiently performing construction work and building management.

  The invention described in claim 1 is a three-dimensional information acquisition unit that acquires three-dimensional information of a construction target, a first three-dimensional model based on design data of the construction target, and a second based on the three-dimensional information. And a design data update unit that updates design data related to a part for which the correspondence relationship is specified. The management device includes a correspondence relationship specification unit that specifies a correspondence relationship with the three-dimensional model.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the design data update unit performs a process of synthesizing the first three-dimensional model and the second three-dimensional model. To do. The invention according to claim 3 is the invention according to claim 1 or 2, wherein the design data update unit updates information related to presence / absence of construction of the part in which the correspondence relationship is specified in the design data. It is characterized by.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the design data is based on the correspondence between the first three-dimensional model and the second three-dimensional model. And a design change determination unit for determining whether or not a different construction has been performed. According to a fifth aspect of the present invention, in the first aspect of the present invention, the viewpoint position for acquiring the three-dimensional information is calculated under the condition that the occurrence of occlusion is minimized. It has the 1st viewpoint position calculation part, It is characterized by the above-mentioned.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the three-dimensional information acquisition range setting unit sets a range in which the three-dimensional information is acquired based on the design data. It is characterized by providing. The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the position of the viewpoint from which the three-dimensional information is acquired is calculated based on the design data and the three-dimensional information. 2 viewpoint position calculation units.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the three-dimensional information is point cloud data acquired by laser scanning, and laser is based on the design data. An irradiation condition of laser light used for scanning is set. The invention according to claim 9 is the invention according to claim 8, wherein the wavelength of the laser beam is selected based on at least one of a color and a material of a member to be laser-scanned. . The invention described in claim 10 is characterized in that, in the invention described in claim 8 or 9, the laser scan density is selected in accordance with the structure of the part to be laser-scanned.

  The invention according to claim 11 is a three-dimensional information acquisition step for acquiring three-dimensional information of a construction object, a first three-dimensional model based on design data of the construction object, and a second based on the three-dimensional information. And a design data update step for updating design data related to a part for which the correspondence relationship is identified.

  The invention according to claim 12 is a program that is read and executed by a computer, and is based on a three-dimensional information acquisition step of acquiring three-dimensional information of the construction object by the computer and design data of the construction object. A correspondence specifying step for specifying the correspondence between the first three-dimensional model and the second three-dimensional model based on the three-dimensional information; and design data updating for updating design data relating to the part for which the correspondence is specified And a step.

  According to the present invention, building work and building management can be performed efficiently.

It is a block diagram of an embodiment. It is a block diagram of an embodiment. It is a block diagram of an embodiment. It is a principle figure of the backward public corporation law. It is a flowchart which shows the procedure of the process in embodiment. It is a flowchart which shows the procedure of the process in embodiment. It is a flowchart which shows the procedure of the process in embodiment. It is an image figure of a construction site.

(Hardware configuration)
FIG. 1 shows a design data management apparatus 100. The design data management apparatus 100 manages design data and construction management data. The design data is data of a design drawing of a construction object (in this case, a building). In the design data, the data regarding the structure, the material of the member to be used, the fixing method of the member, the construction method, etc. are associated. The construction management data is data describing construction procedures. In this example, design data and construction management data are updated according to the progress of construction work. By performing this update, information such as the progress of work, design changes, and changes in work content at the construction site is changed (corrected) to the latest information. As the frequency of the update, once a day (after the work of the day), twice a day (for example, after the work in the morning and after the work in the afternoon), the completion of the predetermined process every specific period For example, the timing of the break.

  The design data management apparatus 100 includes a storage unit 101, a communication unit 102, a design data and construction management data acquisition unit 103, a scan processing setting unit 104, a scan data acquisition unit 105, a scan data processing unit 106, a construction content specifying unit 107, A design change determination unit 108 and an update unit 109 for design data and construction management data are provided.

  Each functional unit described above may be configured by software or may be configured by a dedicated arithmetic circuit. Moreover, the function part comprised by software and the function part comprised by the dedicated arithmetic circuit may be mixed. For example, each functional unit shown in the figure is configured by an electronic circuit such as a PLD (Programmable Logic Device) such as a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or an FPGA (Field Programmable Gate Array).

  Whether each functional unit is configured by dedicated hardware or by software by executing a program in the CPU is determined in consideration of required calculation speed, cost, power consumption, and the like. For example, if a specific functional unit is configured with FPGA, it is advantageous in terms of processing speed but is expensive. On the other hand, a configuration in which a specific functional unit is realized by executing a program by the CPU can save hardware resources, and is advantageous in terms of cost. However, when the functional unit is realized by the CPU, the processing speed is inferior to that of dedicated hardware. Further, when the functional unit is realized by the CPU, it may not be able to cope with complicated calculations. It should be noted that the configuration of the functional unit with dedicated hardware and the configuration with software are equivalent from the viewpoint of realizing a specific function, although there are the differences described above.

  In this example, the design data management apparatus 100 is configured by a computer such as a workstation that can process a large amount of data at high speed. Of course, if there is no problem in processing capability, the design data management apparatus 100 can be configured using a commercially available personal computer. Further, a configuration in which the function of the design data management apparatus 100 is distributed and processed by a plurality of computers is also possible.

  The storage unit 101 stores data handled by the design data management apparatus 100 and a program for operating the design data management apparatus 100. The storage unit 101 includes one or more semiconductor memories, hard disk devices, and other known data storage devices. An external storage capacity can also be used for data storage.

  The communication unit 102 communicates with other devices. Examples of other devices that perform communication include surveying devices such as laser scanners and TS (total stations), other computers such as tablets and PCs, smartphones, and the like. In the present embodiment, the design data management apparatus 100 is accessed using a tablet or a smartphone, and various data managed by the design data management apparatus 100 can be browsed. In addition, various instructions (for example, specific work instructions) can be given from the design data management apparatus 100 to a tablet or smartphone carried by the worker. The communication unit 102 communicates with other devices using known communication means such as an Internet line, a wireless LAN, a wired LAN, and Bluetooth (registered trademark).

  The design data and construction management data acquisition unit 103 acquires design data and construction management data to be updated that are stored in the storage unit 101. A form in which design data and construction management data are stored in an external storage device and acquired from the storage device is also possible.

  The scan processing setting unit 104 performs various settings necessary for laser scanning performed by the laser scanner. FIG. 2 shows details of the scan processing setting unit 104. The scan processing setting unit 104 includes a scanner position calculation unit 141 based on known data, a scan range setting unit 142, and a scan light condition setting unit 143.

  The scanner position calculation unit 141 based on known data calculates the installation position of the laser scanner at the construction site based on the design data and the construction management data. By determining the installation position of the laser scanner, the origin (viewpoint) of scanning by the laser scanner is determined. The installation position (scanning viewpoint) of the laser scanner is also called a mechanical point.

  The scanner position calculation unit 141 based on known data performs the following processing. Here, a description will be given of processing in a case where laser scanning is performed at the end of a day's work and three-dimensional data of a place where the work is performed on that day is acquired. First, the latest design data and construction management data are prepared at that time. From the construction management data, the part (for example, a specific wall surface) where the work was scheduled on that day is found. Next, the part scheduled for the day is specified on the latest design drawing at that time. This identified portion is a scan target. Next, a viewpoint that can scan the specified scan target as much as possible (the least occlusion does not occur) is obtained.

  In the process of obtaining the viewpoint, (1) provisional setting of the viewpoint → (2) the process of calculating the area of the occlusion in the scan target is repeated to obtain the position of the viewpoint that minimizes the area of the occlusion in the scan target. . If the occurrence of occlusion cannot be prevented, the second viewpoint is introduced, and the second viewpoint is calculated by repeating the processes (1) → (2). If the occlusion cannot be resolved even if the second viewpoint is introduced, the third viewpoint is further introduced, and the third viewpoint is calculated by repeating the processes (1) → (2). Of course, it is possible to introduce a fourth or higher viewpoint. However, it is preferable that the number of viewpoints is small from the viewpoint of reducing the burden of later calculation. When the viewpoint is determined, the point is set as a mechanical point (laser scanner installation position). This process is performed in the scanner position calculation unit 141 based on known data.

  For example, the machine point is updated according to the progress status of the daily work by performing the above processing after the completion of the daily work. In addition, as the work progresses, the optimal position of the machine point may change. For example, the position where the laser scanner can be installed changes before and after the floor construction. In this case, the mechanical point is updated by recalculating the mechanical point by the above processing. The machine point information is transmitted from the communication unit 102 to a laser scanner or a terminal of a worker who operates the laser scanner (for example, a tablet carried by the worker). The same applies to information related to setting of a scan range, which will be described later, and information related to setting of scan conditions.

  The scan range setting unit 142 sets a range for performing laser scanning based on the design data and the construction management data. Laser scanning is performed at a predetermined timing according to the progress of construction work (for example, at the end of daily work). At this time, laser scanning is necessary for the part where the work of the day was performed. This is because the point cloud data has been acquired by laser scanning up to the previous day for the part that has already been constructed and was not performed on that day. And the part where the work was performed on that day is described in the construction management data, and can be specified by matching the design data with the construction management data.

  This identified portion is the portion that needs laser scanning on that day. The scan range is set based on the identified portion and the machine point calculated by the above-described “scanner position calculation unit 141 based on known data”. Specifically, the range of the part (the part where the work is performed) constructed on that day viewed from the machine point (the viewpoint from which the scan is performed) is set as the scan range. Of course, the scan range is set with a margin. By setting the scan range, it is possible to prevent unnecessary scans from being performed, and it is possible to suppress an increase in calculation time and an increase in errors due to shortening of work time and handling of point cloud data associated with laser scanning.

  The scanning light condition setting unit 143 sets conditions for performing laser scanning based on the design data and the construction management data. The conditions for performing laser scanning are one or more set values of the intensity, wavelength, and scan density of the scan light. In the design data and the construction management data, information on the material and color of the scan target (target irradiated with the laser beam) is described. The reflection characteristics of light are affected by the material quality, color, and surface condition of the reflective material. If the intensity of the reflected light is weak, the point cloud data is lost, so it is necessary to ensure that the reflected light can be obtained. The scan light setting unit 143 selects one or more of the intensity, wavelength, and scan density of the scan light so that reflected light of a threshold value or more is obtained according to the material, color, and surface state (for example, an embossed surface) of the scan target. Adjust multiple values.

  In addition, when using a laser scanner that can vary the wavelength of the measurement light, it is possible to detect the intensity of the reflected light of the scan light and select a wavelength at which the detected intensity is equal to or greater than (or maximum) the threshold. For example, by using a laser scanner that can change the wavelength of the scan light, the first scan at the first wavelength and the second scan at the second wavelength (of course, the third and subsequent scans are also possible) A method of using the higher data or a method of combining a plurality of scan data can be mentioned. In addition, there are a method of changing the wavelength and irradiating measurement light to a point a plurality of times and adopting data with high reflection intensity, or a method of combining data of a plurality of reflected lights. Further, it is also possible to perform a pre-scan set to a plurality of wavelengths in advance to acquire preliminary data and select a wavelength in the main scan based on the preliminary data. In addition, in the case of a material having poor scanning light reflection characteristics to be used, there is a setting for increasing the irradiation intensity of the scanning light. Further, there is a setting in which the scan density is relatively small when the scan target is a surface, and the scan density is relatively large when the scan target includes an edge portion such as a beam or a column.

  Returning to FIG. 1, the scan data acquisition unit 105 acquires scan data (point cloud data) measured by the laser scanner. As the laser scanner, a model that can perform three-dimensional laser scanning and obtain three-dimensional point cloud data is used. As the laser scanner, techniques described in JP 2010-151682 A, JP 2008-268004 A, US Pat. No. 8767190, and the like can be used. Point cloud data is data that captures a scan target as a collection of points from which three-dimensional coordinates have been acquired.

  FIG. 3 shows a block diagram of the scan data processing unit 106. The scan data processing unit 106 includes a scanner position calculation unit 151 based on the scan data, a three-dimensional model creation unit 152, and a correspondence relationship identification unit 153.

  The scanner position calculation unit 151 based on the scan data performs the following processing. In this process, the correspondence between the scan data (or the three-dimensional model obtained from the scan data) and the design data is obtained, and the position of the laser scanner that obtained the scan data is calculated.

  First, in the design data, the value of the coordinates of each part is known. When the correspondence between the scan data (or the 3D model obtained from the scan data) and the design data is known, the coordinate values of each point of the scan data (or the 3D model obtained from the scan data) are designed. It is understood through data. On the other hand, the relative positional relationship between the scan data (point cloud data) and the laser scanner is known (in the first place, the primary data obtained by laser scanning is the direction and distance from the machine point). Therefore, if the coordinate value of the point cloud data is obtained by comparison with the design data, the position (machine point) of the laser scanner can be obtained.

  Hereinafter, a specific example of the process for calculating the position of the scanner based on the scan data will be described. First, a three-dimensional model of a building at that time is obtained from CAD data of design data. Next, a three-dimensional model is created from the laser scan data (point cloud data). This process is performed by the three-dimensional model creation unit 152. The three-dimensional model creation unit 152 creates a three-dimensional model that captures an object as contour data based on the point cloud data. The three-dimensional model data has high affinity with the three-dimensional CAD data. As a technique for creating a three-dimensional model based on point cloud data, techniques described in International Publication Nos. WO2011 / 070927, JP2012-230594A, JP2014-35702A, and the like can be used.

  Design data may be used in creating a three-dimensional model based on scan data. The scan data includes data related to the structure described in the design data. Therefore, it is efficient to create a 3D model based on scan data by comparing and specifying scan data (or 3D model obtained from scan data) and at least a part of 3D model obtained from design data. Is done.

  Further, in the creation of a three-dimensional model based on scan data, scan data that has already been obtained may be used. That is, in this example, a laser scan is performed at the end of a day's work. Here, the scan data before the previous day is already required to have correspondence with the design data. Therefore, when the scan range is the same as or the same as the previous day, creating a 3D model by using previously acquired scan data as the initial value or reference value in creating a 3D model based on newly obtained scan data Can improve the efficiency of the process.

  When two three-dimensional models (a three-dimensional model obtained from design data and a three-dimensional model obtained from scan data) are obtained, the corresponding relationship is specified. This process is performed in the correspondence relationship specifying unit 153. Techniques for specifying the correspondence between two three-dimensional models are described in, for example, WO2012 / 141235, JP2014-35702, JP2015-46128, and Japanese Patent Application No. 2015-133736. Things are available. It is also possible to directly obtain the correspondence between the 3D model obtained from the design data and the scan data.

  By identifying the correspondence between the 3D model (first 3D model) obtained from the design data and the 3D model (second 3D model) obtained from the scan data, each part of the second 3D model Is obtained as a value in the coordinate system describing the first three-dimensional model. That is, since the first three-dimensional model is a three-dimensional model in which the coordinate values of each part obtained from the design data are known, the correspondence between the first three-dimensional model and the second three-dimensional model is obtained. The coordinates on the design data of each part of the second three-dimensional model are known.

  FIG. 4 shows the principle of the backward public corporation method. The backward intersection method is a method of observing the direction from an unknown point to three or more known points and determining the position of the unknown point as an intersection of these direction lines. Examples of the backward intersection method include single photo orientation and DLT method (Direct Liner Transformation Method). The association method is described in Basic Surveying (Denki Shoin: April 2010) 182p, p184. JP 2013-186816 discloses an example of a specific calculation method related to the meeting method.

In FIG. 4, it is assumed that P ₁ , P ₂ , and P ₂ are points that constitute the second three-dimensional model. Here, when the correspondence between the first three-dimensional model and the second three-dimensional model is specified, the coordinate values of the points P ₁ , P ₂ , and P ₂ are specified as values to be handled on the design data. On the other hand, it is understood that the direction of the scanner from the scan data P ₁ as seen from the (mechanical _point), P _2, direction lines to P ₂ (the optical axis of the measurement light). Therefore, the position of the point O (X ₀ , Y ₀ , Z ₀ ) in FIG. 4 that is a mechanical point (scanning viewpoint) can be obtained geometrically. Specifically, the coordinates of P ₁ , P ₂ , P ₂ , the equation of the direction line connecting P ₁ and O, the equation of the direction line connecting P ₂ and O, and the equation of the direction line connecting P ₃ and O 3 By obtaining the intersection of the two direction lines, the coordinate value of the point O (X ₀ , Y ₀ , Z ₀ ) (the coordinate value in the coordinate system handled on the design data) is obtained.

Based on the above principle, based on the first three-dimensional model obtained from the design data and the second three-dimensional model obtained from the laser scanner data, the position O (X ₀₎ of the laser scanner on the coordinate system describing the design data. , Y ₀ , Z ₀ ). An operation related to the process of obtaining the above point O (X ₀ , Y ₀ , Z ₀ ) using the principle of FIG. 4 is performed in the scanner position calculation unit 151 based on the scan data.

  The specification of the position of the laser scanner by the scanner position calculation unit 151 based on the scan data has the following meaning. The position (machine point) of the laser scanner is obtained by the processing in the scanner position calculation unit 141 based on the known data in FIG. 2, and if the laser scanner is accurately installed at the designated position, the position is calculated from the scan data. The resulting scanner position matches the initially specified position. However, accurate installation of the laser scanner at a designated position requires complicated work and requires specialized knowledge. Therefore, an error may occur in the installation of the laser scanner at the construction site.

  In such a case, the mechanical point error can be corrected by calculating the mechanical point from the scan data. Then, the accuracy of the three-dimensional model obtained from the scan data can be improved by correcting the error of the mechanical point. In addition, when the initial installation of the scanner is arbitrarily performed, that is, when the laser scanner is installed without being particularly aware of the position and its accuracy, the laser scanner installation position (machine) The point) can be specified after the laser scan.

  In some cases, the installation position of the laser scanner has to be changed from the previous installation position due to reasons such as the construction of a floor. In this case, if the installation position of the new scanner is accurately known in advance, it is not necessary to calculate the scanner position after obtaining the scan data. However, when the installation position of the scanner is unknown or unclear, a new scanner position coordinate can be obtained by performing a laser scan and calculating the scanner position based on the obtained scan data. it can. In this case, the burden of work such as accurate surveying of the scanner position can be suppressed.

  Returning to FIG. 1, the construction content specifying unit 107 compares the three-dimensional model obtained from the design data with the three-dimensional model obtained from the scan data, and additionally performs the work performed in the design data updated last. Identify the contents of. Details of this processing will be described below. When performing a laser scan of the construction target part at the time when the work of the day is completed, the latest design data updated at that time is the stage at the end of the work of the previous day. In this case, the day's work is performed based on the contents (latest design data). Therefore, the difference between the 3D model of the construction site at the time of the laser scan and the 3D model based on the design data updated the previous day is different from the last stage of the previous day as a result of the construction on that day. Corresponds to the part. Utilizing this fact, the construction content identification unit 107 identifies the construction part performed on that day.

  Hereinafter, an example of processing performed in the construction content specifying unit 107 will be described. First, a three-dimensional model based on the latest design data (design data updated after completion of the previous day's work) at that time is acquired. This three-dimensional model is defined as a first three-dimensional model. This first three-dimensional model is a three-dimensional model reflecting the contents of construction up to the previous day.

Next, a three-dimensional model based on scan data obtained by laser scanning performed after the day's work is completed is acquired. This three-dimensional model is set as a second three-dimensional model. Here, in the creation of the second three-dimensional model, the positional accuracy of the mechanical point is ensured as much as possible, and the coordinate accuracy of each part of the second three-dimensional model is ensured. For example, the following processing (1) → (2) → (3) is repeated a plurality of times to perform processing for increasing the position accuracy of the machine point. By increasing the position accuracy of the machine point, the position accuracy of the second three-dimensional model can be increased.
(1) Identification of correspondence between the first three-dimensional model and the second three-dimensional model (2) Calculation of machine points using the backward public method of FIG. 4 (3) Re-creation of the second three-dimensional model

  When the first three-dimensional model and the second three-dimensional model are obtained, the two three-dimensional models are compared, and a portion that does not match is extracted. And this extracted part is specified as a part in which construction was performed on that day. This process is performed by the construction content specifying unit 107. There are the following modes in the process of specifying the construction content.

  The first mode is a mode in which the three-dimensional data of a portion where the first three-dimensional model and the second three-dimensional model do not match is replaced with design data. In this case, the laser scan data is only used for specifying a newly constructed part, and the three-dimensional model of the part (the non-matching part) is replaced with one based on the design data. In the first aspect, the construction specific portion can be converted into data as accurate drawing data. However, information such as a design change at the construction site or a change in the dimensions of the member due to the actual product is not reflected.

  The second aspect takes the following procedure. First, when a non-matching portion between the first three-dimensional model and the second three-dimensional model is obtained, it is determined whether or not the portion is as designed data. Here, when the part is as the design data, the part is specified as the constructed part. In this case, the three-dimensional data of the constructed part may be three-dimensional data based on the design data, or may be three-dimensional data based on the scan data.

  On the other hand, if the part is not in accordance with the design data, a search is made as to whether a change in the part has been reported. Workers and site managers create daily work reports and work records, and the contents are stored in a database. The above search is performed by searching this database. If a change has been reported, three-dimensional data of a portion different from the design data is acquired from the second three-dimensional model and reflected in the design data. If no change has been reported, three-dimensional data that is different from the above design data is put on hold. When the second mode is used, information such as a change at the construction site or a change in the size of the member due to the actual match is reflected in the update data.

  A third mode in which the first mode and the second mode are used together is also possible. In this case, first, a non-matching portion (difference portion) between the first tertiary model and the second three-dimensional model is acquired. Next, the difference part and the corresponding original design data are compared, and the difference between the two is calculated. If this difference is less than or equal to a predetermined threshold value, the design data is updated in such a manner that the difference portion is replaced with the design data scheduled for construction. Specifically, the difference portion is treated as a construction completion portion on the design data.

  On the other hand, the difference part is compared with the corresponding original design data, and if this difference exceeds a predetermined threshold, it is determined that construction different from the design has been performed, and the difference part is obtained from the laser scan data. The design data is updated in the form replaced by the 3D model. Specifically, the difference portion is acquired from the second three-dimensional model, and is combined with the first third-order model, and the construction portion data captured by the scan data is reflected in the design data. In the case of the third mode, if the error is within the range defined by the threshold, the design data is updated using data prepared in advance, and scan data exceeding the error is obtained. The design data is updated using (that is, actually measured data). The processing according to the first to third aspects is performed by the construction content specifying unit 107.

  The design change determination unit 108 can change the design of the difference portion between the first 3D model obtained from the design data and the second 3D model obtained from the scan data if the difference portion is not as originally designed. It is determined that the part has been performed. The portion specified as the design change is converted into data so that it can be identified later.

  The design data and construction management data updating unit 109 updates the data of the part constructed on the day specified by the construction content specifying unit 107 on the design data. By performing this update, the construction contents are reflected in the design data, and the information on which the presence / absence of construction on the design data can be determined becomes the latest. For example, information on which part is constructed on the design data and which part is not yet constructed is updated to the latest one. Also, the construction management data is updated in correspondence with the update of the design data.

  In this description, the update frequency of the design data is once a day, but may be twice a day or once every two days. Further, it is possible to update the design data every time a specific process is completed.

(Example of processing)
Hereinafter, an example of processing using the design data management apparatus 100 of FIG. 1 will be shown. FIG. 5 shows an example of basic processing. 6 and 7 are sub-charts for further explaining a part of the processing of FIG. The program for executing the processes of FIGS. 5 to 7 is stored in the storage unit 101 or an appropriate storage medium, and is read and executed on an appropriate memory area.

  When the process is started, first, design data and construction management data are acquired (step S101). This process is performed in the design data and construction management data acquisition unit 103. Next, laser scan data measured by the laser scanner is acquired (step S102). FIG. 6 shows details of the processing performed in step S102.

  In the process of FIG. 6, first, the scanner position (machine point) is calculated based on the latest design data (last updated design data) and the latest construction management data (last updated construction management data) ( Step S111). This process is performed in the scanner position calculation unit 141 based on known data. After step S111, the scan range is set based on the latest construction management data (step S112). This process is performed in the scan range setting unit 142.

  Next, the setting of the wavelength and output of the scanning light based on the color and material of the scan target, and the scan density based on the shape of the scan target are performed (step S113). This process is performed by the scan light condition setting unit 143. Then, at the stage of receiving a notification of installation completion from the worker who installed the laser scanner, the start of laser scanning is instructed (step S114), and laser scanning is performed. After the laser scan is completed, the scan data is output from the laser scanner to the design data management apparatus 100, and the design data management apparatus 100 acquires the scan data (step S115). Scan data acquisition is performed by the scan data acquisition unit 105.

  Returning to the flow of FIG. 5, when scan data acquisition (step S102) is performed, the process proceeds to step S103. In step S103, a three-dimensional model is created based on the scan data acquired in step S102. FIG. 7 shows details of step S103. In the process of FIG. 7, first, the scanner position (machine point) is specified based on the scan data (step S121). If there is an error in the machine point in the initial setting, the coordinate value of the machine point is corrected by this process. This processing can also be performed using a TS (total station) function. In this case, a laser scanner having a TS function is used.

  After step S121, three-dimensional design data is created based on the corrected machine point and the scan data obtained in step S115. This process is performed by the three-dimensional model creation unit 152. It is effective to increase the accuracy of the obtained three-dimensional model by repeating the processing from step 121 to step S122.

  When the three-dimensional model based on the scan data is created, the process proceeds to step S104 in FIG. In step S104, the construction part performed after the last update is specified. This process is performed by the construction content determination unit 107. When the construction part is specified, the part is reflected on the design data, and the design data is updated (corrected). Similarly, the construction management data is updated. This processing is performed by the update unit 109 for design data and construction management data.

  According to the above processing, the state in which construction progresses daily is grasped as electronic data by laser scanning, and the design data and construction management data are updated. By using laser scan data, the work of updating design data can be saved and speeded up.

  By updating the construction management data, for example, it is possible to display a screen on which a work end, a work not undertaken, and an unworked part can be visually identified on a design drawing. In addition, in the construction schedule screen display, it is possible to visually determine the end of work, during work, and part of work not yet started.

  An example of the scan frequency is that it is performed at the stage when the work of the day is completed, but it is also possible to update the construction management data at a frequency of updating twice a day or once every two days. It is. In addition, the update timing is not determined by time, but the data update (that is, laser scan) timing can be determined in accordance with the construction content.

  The design data management apparatus 100 can also be used as a laser scanner position specifying apparatus that uses the function of the scanner position calculation unit 151 based on scan data.

(Other)
As an apparatus for acquiring three-dimensional information, a stereo camera that performs stereoscopic photo measurement may be used in addition to or instead of the laser scanner. In this case, a three-dimensional model is created using a stereo pair image.

(Concrete example)
In FIG. 8A, building bodies 301 and 302 and pillars 303 are shown. FIG. 8B shows a state in which the support member 304 is fixed to the housings 301 and 302 in the state of FIG. FIG. 8C shows a state in which the wall 305 is attached to the support member 304 and the column 303 in the state of FIG. 8B. Each stage of construction shown in FIGS. 8A to 8C is grasped as three-dimensional information by laser scanning, and the design drawing and construction management data are updated based on the three-dimensional information. That is, by performing laser scanning, the design data corresponding to the state of FIG. 8A is updated, the design data corresponding to the state of FIG. 8B is updated, and the design corresponding to the state of FIG. Data update is performed by the design data management apparatus 100.

(Application examples)
Technology that uses the laser scan data for maintenance of the completed building by leaving the laser scanner in the completed building or placing markings and pedestals in the completed building to specify the installation position of the laser scanner In addition, the present invention can be used. The idea is the same as in the case of the construction management described above. For example, when renovation of a completed building is performed, the design data is updated at the time of renovation work by performing the above-described laser scanning during construction and updating (correcting) the design data based on the laser scan data at this time. Work (correction work) can be made more efficient.

  In addition, the design data management apparatus 100 can be used for confirming the temporal change of buildings and the damage situation at the time of disaster. In this case, it is detected by comparing the laser scan data with the design data whether or not the structure has changed due to a factor other than construction. The design data in this specification includes not only data used for building construction but also data on the structure of the building used for building management. In addition, construction objects include office buildings, commercial buildings, commercial facilities, various complex facilities, residential buildings, schools, gymnasiums, stadiums, stations, factories, warehouses, viaducts, port facilities, airports, power plants, Environmental plant facilities (for example, water purification plants etc.), chemical plants, tunnels, etc. are mentioned.

Claims (12)

A 3D information acquisition unit for acquiring 3D information of the construction object;
A correspondence specifying unit for specifying a correspondence between the first three-dimensional model based on the design data of the construction object and the second three-dimensional model based on the three-dimensional information;
And a design data updating unit that updates design data related to the part for which the correspondence relationship is specified. The design data update unit
The management apparatus according to claim 1, wherein a process of combining the first three-dimensional model and the second three-dimensional model is performed. The design data update unit
The management apparatus according to claim 1, wherein information related to presence / absence of construction of a part for which the correspondence relationship in the design data is specified is updated.   A design change determination unit that determines whether or not construction different from the design data is performed based on the correspondence relationship between the first three-dimensional model and the second three-dimensional model. Item 4. The management device according to any one of Items 1 to 3.   5. The apparatus according to claim 1, further comprising: a first viewpoint position calculation unit configured to calculate a position of a viewpoint from which the three-dimensional information is acquired under a condition where occurrence of occlusion is minimized. The management device described.   The management apparatus according to claim 1, further comprising a three-dimensional information acquisition range setting unit that sets a range in which the three-dimensional information is acquired based on the design data.   7. A second viewpoint position calculation unit that calculates a position of a viewpoint from which the three-dimensional information is acquired based on the design data and the three-dimensional information is provided. Management device. The three-dimensional information is point cloud data acquired by laser scanning,
8. The management apparatus according to claim 1, wherein an irradiation condition for laser light used for laser scanning is set based on the design data.   9. The management apparatus according to claim 8, wherein the wavelength of the laser beam is selected based on at least one of a color and a material of a member to be laser scanned.   10. The management apparatus according to claim 8, wherein a laser scan density is selected in accordance with a structure of a part to be laser scanned. A 3D information acquisition step for acquiring 3D information of the construction object;
A correspondence specifying step for specifying a correspondence between the first three-dimensional model based on the design data of the construction object and the second three-dimensional model based on the three-dimensional information;
And a design data update step of updating design data relating to the part for which the correspondence relationship is specified. A program that is read and executed by a computer,
On the computer,
A 3D information acquisition step for acquiring 3D information of the construction object;
A correspondence specifying step for specifying a correspondence between the first three-dimensional model based on the design data of the construction object and the second three-dimensional model based on the three-dimensional information;
And a design data update step of updating design data related to the part for which the correspondence relationship is specified.

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