Building management system, method and program

Abstract

To utilize a BIM for building operation, management and maintenance.SOLUTION: A building management system includes a BIM data acquisition unit 1 for acquiring BIM data of a building to be managed, a model generation unit 2 for generating a three-dimensional translucent model of the building on the basis of the BIM data, an information acquisition unit 3 for acquiring information about building operation and environment, a visualization unit 5 for generating a model image for displaying information selected by a user in the information acquired by the information acquisition unit 3 on the three-dimensional translucent model, and a display unit 6 for displaying the model image generated by the visualization unit 5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a building management system, method, and program for managing a building such as a building. [Background technology]

[0002] A technology called BIM (Building Information Modeling) that reproduces a 3D model identical to the real thing on a computer and makes construction more efficient is attracting attention in the construction industry. There is also a demand for the use of BIM for maintaining and managing buildings after construction is completed (see Non-Patent Document 1).

[0003] In BIM, building elements are managed in a hierarchical structure, such as site, building, floor, and space, by defining the spatial structure. The BIM data used in the construction and building stages is delivered to the client. The client uses the BIM data to operate, manage, and maintain the building.

[0004] However, with conventional BIM, when delivering information on an entire building to users, there was a problem that there were no building elements that matched the information to be conveyed. Specifically, measurement data such as room temperature, humidity, and number of people, or setting data such as set temperature, were not defined to be stored as BIM data, so it was not possible to visualize the measurement data or setting data using BIM. Therefore, there was a problem that BIM could not be used for the operation, management, and maintenance of buildings. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] “Guidelines for Standard BIM Workflows and Their Utilization in the Construction Industry (2nd Edition)”, Ministry of Land, Infrastructure, Transport and Tourism, March 30, 2022,<https: / / www.mlit.go.jp / jutakukentiku / content / 001473764.pdf> Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made to solve the above-mentioned problems, and aims to provide a building management system, method, and program that can utilize BIM for the operation, management, and maintenance of buildings. [Means for solving the problem]

[0007] The building management system of the present invention is characterized by comprising a BIM data acquisition unit configured to acquire BIM data of a building to be managed, a model generation unit configured to generate a 3D translucent model of the building based on the BIM data, an information acquisition unit configured to acquire information regarding the operation and environment of the building, a visualization unit configured to generate a model image for displaying information selected by a user from the information acquired by the information acquisition unit on the 3D translucent model, and a display unit configured to display the model image generated by the visualization unit. In addition, in one configuration example of the building management system of the present invention, the visualization unit adds information to the three-dimensional translucent model by generating the model image so that the level indicated by the information selected by the user is displayed in multiple levels of color. In addition, in one configuration example of the building management system of the present invention, the visualization unit adds information to the three-dimensional semi-transparent model for each room of the building defined by the BIM data. Moreover, in one configuration example of the building management system of the present invention, the information acquisition unit acquires at least current information and past history for the information to be acquired, and the visualization unit adds information to the three-dimensional translucent model by generating the model image so that the change in level indicated by the information for the period selected by the user is displayed in multiple levels of color.

[0008] In addition, the building management method of the present invention is characterized in that a computer performs the following steps: a first step of acquiring BIM data of a building to be managed, a second step of generating a 3D translucent model of the building based on the BIM data, a third step of acquiring information related to the operation and environment of the building, a fourth step of generating a model image for displaying information selected by a user from the information acquired in the third step on the 3D translucent model, and a fifth step of displaying the model image generated by the fourth step. Furthermore, in one configuration example of the building management method of the present invention, the fourth step includes a step of adding information to the three-dimensional translucent model by generating the model image so that the level indicated by the information selected by the user is displayed in multiple levels of color. In addition, in one configuration example of the building management method of the present invention, the fourth step includes a step of adding information to the three-dimensional semi-transparent model for each room of the building defined by the BIM data. Furthermore, in one configuration example of the building management method of the present invention, the third step includes a step of acquiring at least current information and past history for the information to be acquired, and the fourth step includes a step of adding information to the three-dimensional translucent model by generating the model image so that the change in level indicated by the information for the period selected by the user is displayed in multiple levels of color. The building management program of the present invention is characterized in that it causes a computer to execute each of the above steps. Effect of the Invention

[0009] According to the present invention, a 3D translucent model of a building is generated based on BIM data, information related to the building's operation and environment is obtained, and a model image is generated to display information selected by the user from the obtained information on the 3D translucent model, thereby making it possible to utilize BIM for the operation, management, and maintenance of buildings. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram showing the configuration of a building management system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a flowchart illustrating the operation of the building management system according to the embodiment of the present invention. [Diagram 3] FIG. 3 is a diagram showing the hierarchical structure of each element of the IFC. [Figure 4] FIG. 4 is a diagram showing an example of an image displayed by the display unit according to the embodiment of the present invention. [Diagram 5] FIG. 5 is a block diagram showing an example of the configuration of a computer that realizes a building management system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a block diagram showing the configuration of a building management system according to an embodiment of the present invention. The building management system includes a BIM data acquisition unit 1, a model generation unit 2, an information acquisition unit 3, an input device 4, a visualization unit 5, and a display unit 6.

[0012] FIG. 2 is a flowchart explaining the operation of the building management system. The BIM data acquisition unit 1 acquires BIM data of the building to be managed (step S100 in FIG. 2). BIM data is created by the building's construction owner and delivered to the building's client. BIM data is standardized in a file format called IFC (Industry Foundation Classes). In IFC, elements related to spatial structure are hierarchically organized to enable understanding of the structure of a building. The hierarchical structure of each element in IFC is shown in FIG. 3. IfcProject is project information, IfcSite is site information, IfcBuilding is building information, IfcBuildingStorey is floor information, IfcSpace is floor room (space) information, IfcWall is wall information, IfcColumn is column information, IfcCovering is ceiling information, IfcWindow is window information, IfcDoor is door information, and IfcSlab is floor information.

[0013] Next, the model generation unit 2 generates a 3D semi-transparent model (BIM model) of the building to be managed based on the BIM data acquired by the BIM data acquisition unit 1 (FIG. 2, step S101). Next, the model generation unit 2 divides the 3D semi-transparent model into floors based on IfcBuildingStorey (FIG. 2, step S102). Furthermore, the model generation unit 2 divides each divided floor into rooms based on IfcSpace (FIG. 2, step S103). The processing of steps S102 and S103 is for switching the viewing unit from the entire building to the floor.

[0014] Next, the information acquiring unit 3 acquires information on the operation and environment of the managed building (step S104 in FIG. 2). For example, the information acquiring unit 3 acquires information on the operation and environment of the building for each room, such as a predicted indoor temperature, a current indoor temperature, a past history of indoor temperature, a predicted amount of power usage, a current amount of power usage, a past history of power usage, a predicted indoor lighting usage rate, a current indoor lighting usage rate, a past history of indoor lighting usage rate, a predicted indoor humidity, a current indoor humidity, a past indoor humidity history, a predicted set temperature, a current set temperature, and a past set temperature history, from a BA (Building Automation) system for an administrator who monitors and controls the facilities of the managed building.

[0015] In addition, the information acquisition unit 3 acquires information about the building's operation and environment for each room from a SEC (Security) system for administrators who monitor the security of managed buildings, such as the predicted number of occupants, the current number of occupants, past history of the number of occupants, predicted locking / unlocking status, current locking / unlocking status, past locking / unlocking history, predicted alarm occurrence information, current alarm occurrence status, and past alarm occurrence history.

[0016] Furthermore, the information acquisition unit 3 acquires information regarding the building's operation and environment for each room from a TS (Tenant Service) system for residents that provides services to residents of the managed buildings, such as the predicted amount of electricity usage, the current amount of electricity usage, the past history of electricity usage, the predicted number of visitors, the current number of visitors, the past history of the number of visitors, the predicted amount of ventilation volume, the current amount of ventilation volume, and the past history of ventilation volume.

[0017] A user of the building management system (eg, a building manager) can operate the input device 4 to select information that he or she wishes to confirm. When the user selects the information he or she wishes to confirm (step S105 in FIG. 2), the visualization unit 5 generates a model image for displaying the information selected by the user on the three-dimensional semi-transparent model generated by the model generation unit 2 (step S106 in FIG. 2).

[0018] When the user selects, for example, the current value of the indoor temperature as the information to be confirmed, the visualization unit 5 generates a model image for displaying the current value of the indoor temperature on the 3D semi-transparent model. One method of adding information to the 3D semi-transparent model is to display the indoor temperature levels in several levels (for example, 5 levels) of color. The visualization unit 5 adds such information for each room in the building. When the information acquisition unit 3 has acquired indoor temperature data from multiple locations per room, it is sufficient to calculate and display the average temperature of the room.

[0019] In the above example, a case where the user selects the current value of the indoor temperature has been described, but even if the user selects a predicted value of the indoor temperature at a specific time point in the future, a model image to which information on the predicted value of the indoor temperature at a specific time point in the future has been added can be generated by a similar process. Also, even if the user selects the indoor temperature at a specific time point in the past, a model image to which information on the indoor temperature at a specific time point in the past has been added can be generated by a similar process.

[0020] Furthermore, when the user selects, for example, the current value of the indoor lighting usage rate as the information to be confirmed, the visualization unit 5 generates a model image for displaying the current value of the indoor lighting usage rate on the 3D semi-transparent model. As a method of adding information to the 3D semi-transparent model, there is a method of displaying the level of the indoor lighting usage rate in several stages of color, similar to the indoor temperature. The visualization unit 5 adds such information for each room in the building.

[0021] In the above example, a case was described where the user selected the current value of the indoor lighting usage rate, but even if the user selected a predicted value of the indoor lighting usage rate at a specific time in the future, a model image with information on the predicted value of the indoor lighting usage rate at a specific time in the future can be generated by a similar process. Also, even if the user selected the indoor lighting usage rate at a specific time in the past, a model image with information on the indoor lighting usage rate at a specific time in the past can be generated by a similar process.

[0022] Furthermore, when the user selects, for example, the current locking / unlocking status as the information to be confirmed, the visualization unit 5 generates a model image for displaying the current locking / unlocking status on the 3D semi-transparent model. One method of adding information to the 3D semi-transparent model is to display the current locking / unlocking status in two levels of color. The visualization unit 5 adds such information for each room in the building.

[0023] If the user selects predicted information on locking / unlocking at a specific time in the future, a model image with predicted information on locking / unlocking at a specific time in the future can be generated by a similar process. Also, if the user selects the locking / unlocking situation at a specific time in the past, a model image with information on locking / unlocking at a specific time in the past can be generated by a similar process.

[0024] Furthermore, when the user selects, for example, the current value of population density as the information to be confirmed, the visualization unit 5 generates a model image for displaying the current value of population density, which is the current value of the number of people in the room divided by the maximum number of people that can be accommodated in the room, on the 3D semi-transparent model. As a method of adding information to the 3D semi-transparent model, there is a method of displaying the population density level in several levels of color, similar to the indoor temperature. The visualization unit 5 adds such information for each room in the building.

[0025] If the user selects a population density at a specific time in the future, a model image can be generated by calculating a population density for each room by dividing the predicted number of people in the room at a specific time in the future by the maximum capacity of the room. If the user selects a population density at a specific time in the past, a model image can be generated by calculating a population density for each room by dividing the number of people in the room at a specific time in the past by the maximum capacity of the room.

[0026] When displaying information in several different colors, it is desirable to use semi-transparent colors so that objects that are in the background can be seen. It is also desirable that the room unit for which the information acquisition unit 3 acquires information is the same as the room unit defined in the BIM data. If the room unit for which the information acquisition unit 3 acquires information is different from the room unit defined in the BIM data, definition data indicating the relationship between the room unit for which the information acquisition unit 3 acquires information and the room unit defined in the BIM data may be set in advance in the visualization unit 5. The visualization unit 5 can map the information acquired by the information acquisition unit 3 onto the 3D semi-transparent model based on the definition data.

[0027] The display unit 6 displays the model image generated by the visualization unit 5 (step S107 in FIG. 2). An example of the model image displayed by the display unit 6 is shown in FIG. 4. In the example of the model image 100 in FIG. 4, the indoor temperature distribution inside the building is displayed in different colors. Note that the BIM data on which FIG. 4 is based uses Autodesk's public sample data (design sample model v1.16) (https: / / bim-design.com / rug / library / ?uns=1).

[0028] The model image is a colored 3D semi-transparent model of a building, so the viewpoint can be easily changed. When the user operates the input device 4 to change the viewpoint, the display unit 6 displays the model image corresponding to the viewpoint selected by the user.

[0029] In addition, although the example in Fig. 4 shows the entire building, the model image is a 3D semi-transparent model of the building colored on a room (IfcSpace) basis, so it is possible to cut out and display the building on a floor-by-floor basis, and also possible to cut out and display the building on a room-by-room basis. When the user operates the input device 4 to select a floor of the building, the display unit 6 displays a model image of the floor selected by the user. When the user operates the input device 4 to select a room, the display unit 6 displays a model image of the room selected by the user.

[0030] In addition, in this embodiment, an example is described in which information at a specific time point is added to a 3D semi-transparent model, but the visualization unit 5 may generate a model image such that when a user selects information to be confirmed and a specific period, the change in the level indicated by the selected information during the selected period is displayed in multiple levels of color. This makes it possible to display, for example, the trend of changes in the indoor temperature of a room in color.

[0031] As described above, in this embodiment, a 3D semi-transparent model of a building is generated based on BIM data, information related to the building's operation and environment is obtained, and a model image is generated to display information selected by the user from the obtained information on the 3D semi-transparent model, thereby making it possible to utilize BIM for the operation, management, and maintenance of a building.

[0032] For example, by displaying the indoor temperature distribution of a building on a model, the effects of sunlight on the building can be visually confirmed. As a result, measures can be taken such as changing the air conditioning settings or changing the glass only in areas that are easily affected by sunlight. In addition, by displaying the indoor lighting usage rate on the model, the distribution of lights in use in the building can be visually confirmed, allowing users to visually check whether any lights have been forgotten to be turned off.

[0033] In addition, by displaying the locking / unlocking status on the model, you can visually check whether you have forgotten to lock anything. In addition, by displaying population density on the model, the distribution of population density within a building can be visually confirmed, which makes it possible for building managers to issue requests for ventilation, for example.

[0034] In this embodiment, the indoor temperature, indoor lighting usage rate, lock / unlock status, and population density are displayed on the model as an example, but this is not limited to this. For example, the indoor humidity or the set temperature may be displayed.

[0035] The building management system described in this embodiment can be realized by a computer equipped with a CPU (Central Processing Unit), a storage device, and an interface, and a program that controls these hardware resources. An example of the configuration of this computer is shown in Figure 5.

[0036] The computer includes a CPU 200, a storage device 201, and an interface device (I / F) 202. A BA system, a SEC system, a TS system, an input device 4, a display device, etc. are connected to the I / F 202. In such a computer, a building management program for realizing the building management method of the present invention is provided in a state recorded on a recording medium such as a flexible disk, a CD-ROM, a DVD-ROM, or a memory card, and is stored in the storage device 201. The building management program may also be provided through a network. The CPU 200 executes the processing described in this embodiment in accordance with the building management program stored in the storage device 201. [Industrial Applicability]

[0037] The present invention can be applied to technologies relating to the operation, management, and maintenance of buildings. [Explanation of symbols]

[0038] 1...BIM data acquisition unit, 2...model generation unit, 3...information acquisition unit, 4...input device, 5...visualization unit, 6...display unit.

Claims

1. A BIM data acquisition unit configured to acquire BIM data of a building to be managed; a model generator configured to generate a three-dimensional semi-transparent model of the building based on the BIM data; an information acquisition unit configured to acquire information regarding the operation and environment of the building; a visualization unit configured to generate a model image for displaying information selected by a user from among the information acquired by the information acquisition unit on the three-dimensional semi-transparent model; and a display unit configured to display the model image generated by the visualization unit.

2. The building management system according to claim 1, The building management system is characterized in that the visualization unit adds information to the three-dimensional translucent model by generating the model image so that the level indicated by the information selected by the user is displayed in multiple levels of color.

3. The building management system according to claim 1, A building management system characterized in that the visualization unit adds information to the three-dimensional translucent model on a room-by-room basis of the building defined by the BIM data.

4. The building management system according to claim 1, The information acquisition unit acquires at least current information and past history regarding the information to be acquired; The building management system is characterized in that the visualization unit adds information to the three-dimensional translucent model by generating the model image so that the change in level indicated by the information for the period selected by the user is displayed in multiple levels of color.

5. A first step of acquiring BIM data of a building to be managed; a second step of generating a three-dimensional semi-transparent model of the building based on the BIM data; a third step of acquiring information about the operation and environment of the building; a fourth step of generating a model image for displaying information selected by a user from the information acquired in the third step on the three-dimensional semi-transparent model; and a fifth step of displaying the model image generated by the fourth step, said fifth step being carried out by a computer.

6. The building management method according to claim 5, The building management method is characterized in that the fourth step includes a step of adding information to the three-dimensional translucent model by generating the model image so that the level indicated by the information selected by the user is displayed in multiple levels of color.

7. The building management method according to claim 5, The building management method, wherein the fourth step includes a step of adding information to the three-dimensional translucent model on a room-by-room basis of the building defined by the BIM data.

8. The building management method according to claim 5, The third step includes a step of acquiring at least current information and a past history of the information to be acquired, The building management method is characterized in that the fourth step includes a step of adding information to the three-dimensional translucent model by generating the model image so that the change in level indicated by the information for the period selected by the user is displayed in multiple levels of color.

9. A building management program that causes a computer to execute each step according to any one of claims 5 to 8.

Images