Evaluation support device, evaluation support method and evaluation support program

Abstract

To provide an evaluation support device, an evaluation support method, and an evaluation support program for supporting the evaluation of line-of-sight conditions in a building.SOLUTION: A support device 20 includes a control unit 21 that supports the design of a building arranged in a three-dimensional space. The control unit 21 acquires a building model in which element models are arranged in an interior space, and calculates statistical values of line-of-sight distances to the element models for each line-of-sight direction at each viewpoint position set in an evaluation target area of the interior space. The control unit 21 calculates a line-of-sight index in accordance with the distribution of the statistical values of the line-of-sight distances in the evaluation target area.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an evaluation support device, an evaluation support method, and an evaluation support program that support the evaluation of a building. [Background technology]

[0002] Visibility may be considered within a building, such as an office space. Visibility means being able to see a wide, unobstructed view of the surrounding environment. Good visibility within a building can stimulate communication, create a sense of openness and brightness in the office space, make it easier to grasp the surroundings, and improve safety during evacuation in the event of a disaster. For this reason, evacuation safety evaluation systems that evaluate the evacuation safety of guiding evacuees to emergency exits are also being considered (see, for example, Patent Document 1). The evacuation safety evaluation system described in this document specifies the effective range of guidance signs included in a layout plan based on the visibility of the guidance signs. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-162936 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there was no efficient method for evaluating visibility within a building, which made it difficult to compare different layouts within a building from the perspective of visibility. [Means for solving the problem]

[0005] An evaluation support device for solving the above problems includes a control unit that supports the design of a building arranged in a three-dimensional space. The control unit acquires a building model in which element models are arranged in an interior space, calculates line-of-sight distances to the element models for each line-of-sight direction at each viewpoint position set in an evaluation target area of the interior space, and calculates a line-of-sight index in the evaluation target area according to a distribution of statistical values of the line-of-sight distances. [Effects of the Invention]

[0006] According to the present invention, it is possible to assist in evaluating visibility conditions within a building. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is an explanatory diagram of a system according to an embodiment. [Figure 2] FIG. 2 is an explanatory diagram of a hardware configuration of the embodiment. [Figure 3] FIG. 2 is an explanatory diagram of a processing procedure according to an embodiment. [Figure 4] FIG. 1 is an explanatory diagram of an arrangement within a building according to an embodiment. [Figure 5] FIG. 1 is an explanatory diagram of an outlook for an embodiment. [Figure 6] FIG. 2 is an explanatory diagram of a visibility index according to an embodiment. [Figure 7] FIG. 2 is an explanatory diagram of a visibility index according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] 1 to 7, an embodiment of an evaluation support device, an evaluation support method, and an evaluation support program will be described below. In this embodiment, an evaluation support device, an evaluation support method, and an evaluation support program will be described that calculate a visibility index that evaluates visibility taking into account the layout of the interior space within a building arranged in a three-dimensional space. Here, the visibility index is an index that represents the distance that can be seen when looking far into the distance within a building. In this embodiment, as shown in FIG. 1, a user device 10 and a support device 20 are used.

[0009] (Hardware configuration description) 2, the hardware configuration of the information processing device H10 that constitutes the user device 10 and the support device 20 will be described. The information processing device H10 includes a communication device H11, an input device H12, a display device H13, a storage device H14, and a processor H15. Note that this hardware configuration is an example, and it can also be realized by other hardware.

[0010] The communication device H11 is an interface that establishes a communication path with another device and executes data transmission and reception, and is, for example, a network interface or a wireless interface.

[0011] The input device H12 is a device that accepts input of various information, such as a mouse, a keyboard, etc. The display device H13 is a display or the like that displays various information. The storage device H14 is a storage device that stores data and various programs for executing various functions of the user device 10 and the support device 20. Examples of the storage device H14 include a ROM, a RAM, and a hard disk.

[0012] The processor H15 uses programs and data stored in the storage device H14 to control each process in the user device 10 and the support device 20. Examples of the processor H15 include a CPU and an MPU. The processor H15 loads programs stored in a ROM or the like into a RAM and executes various processes for each process.

[0013] The processor H15 is not limited to a processor that performs all of its processing using software. For example, the processor H15 may include a dedicated hardware circuit (e.g., an application-specific integrated circuit (ASIC)) that performs hardware processing for at least some of the processing it performs. That is, the processor H15 may be configured with the following:

[0014] [1] One or more processors that operate according to a computer program (software). [2] One or more dedicated hardware circuits that perform at least some of the various processes [3] Circuits containing combinations of these The processor includes a CPU and memory, such as RAM and ROM, that stores program code or instructions configured to cause the CPU to perform processes. Memory, or computer-readable media, includes any available media that can be accessed by a general-purpose or special-purpose computer.

[0015] (System Configuration) Next, each function of the evaluation support system will be explained using FIG. The user device 10 is a computer terminal used by a person in charge of designing a building.

[0016] The support device 20 is a computer system (evaluation support system) that supports the design of a building using BIM (Building Information Modeling). The support device 20 includes a control unit 21, a design information storage unit 22, and an analysis result storage unit .

[0017] The control unit 21 functions as a management unit 211 and an analysis unit 212 by executing the evaluation support program. The management unit 211 acquires design information including the structure, such as a building, to be processed. The analysis unit 212 executes a process for calculating the visibility index.

[0018] The design information storage unit 22 stores design information about the structure of a building created using BIM. This design information is recorded when a building is designed using BIM. The building design information includes basic information, element model information, layout information, and attribute information.

[0019] The basic information includes the building identifier, the name of the construction site, the longitude and latitude, etc. The element model information is information about the three-dimensional model (object) of each element that constitutes the building.

[0020] The placement information includes information about the coordinates at which each element model is placed. The attribute information is attribute information of this element model. This attribute information includes information about the specifications of the element model (size, use, etc.). This attribute information includes information for calculating the transmittance of the element model (for example, physical properties, materials, etc.).

[0021] The analysis result storage unit 23 stores the analysis results of the visibility index calculated by the simulation. The analysis results are stored when the evaluation support process is performed. The analysis results include information on the evaluation target area, location, and visibility evaluation value.

[0022] The evaluation target area is information for specifying an area (for example, a predetermined floor of a building) for which the visibility index is to be calculated. The location is information about the location (coordinates) where the viewpoint is placed within the evaluation target area. The visibility evaluation value is information about the distribution of visibility distances within the field of view of this viewpoint position.

[0023] (Evaluation support processing) The evaluation support process will be described with reference to FIGS.

[0024] 3, the control unit 21 of the support device 20 executes a process of identifying an evaluation target (step S11). Specifically, the management unit 211 of the control unit 21 acquires design information (building model) of a building specified by the user device 10, and records it in the design information storage unit 22. Furthermore, the management unit 211 identifies an evaluation target area (a passage in this embodiment) using attribute information of element models that constitute the building model.

[0025] Specifically, as shown in Fig. 4, a hatched passage in a building model B1 is identified as an evaluation target area AR1. This building model B1 has a plurality of small rooms. In this embodiment, a part of a wall W1 of the small room R1 is partitioned by a transparent member (transparent member).

[0026] Next, the control unit 21 of the support device 20 divides the evaluation target region into areas of a predetermined size, specifies a processing target area, and sequentially repeats the following processing for each specified processing target area.

[0027] Here, the control unit 21 of the support device 20 executes a process of identifying the gaze direction (step S12). Specifically, the analysis unit 212 of the control unit 21 sets a viewpoint at a predetermined position (for example, the center position) of the processing target area and at a predetermined height (for example, the height position of a standard-sized person in a sitting or standing position). Then, the analysis unit 212 identifies the gaze of each predetermined gaze direction within the field of view from this viewpoint. As shown in FIG. 5, in this embodiment, the line-of-sight directions of the line of sight P1 are, for example, directions obtained by dividing 360 degrees in a horizontal plane into eight equal parts.

[0028] Next, the control unit 21 of the support device 20 executes a process of calculating the line-of-sight distance within the field of view (step S13). Specifically, the analysis unit 212 of the control unit 21 calculates the distance to the position where the line of sight reaches an opaque element model and is blocked within the field of view within the building. In this case, for example, when the analysis unit 212 reaches a translucent element model such as a transparent partition board, it calculates the distance to the opaque member that exists beyond it.

[0029] Specifically, as shown in Fig. 5, at viewpoint E1, the distance from line of sight P1 to opaque element model M1 is calculated. If the line of sight reaches a window or the like and goes beyond the building, the distance within the building is calculated.

[0030] Next, the control unit 21 of the support device 20 executes a process of calculating a statistical value of the visibility distance (step S14). Specifically, the analysis unit 212 of the control unit 21 calculates a statistical value (for example, an average value) of the visibility distance in each direction at the viewpoint position. Then, the analysis unit 212 records the visibility evaluation value in the analysis result storage unit 23 in association with the location of the processing target area. Then, the control unit 21 of the support device 20 repeats the above process until it is completed for all processing target areas in the evaluation target region.

[0031] Next, the control unit 21 of the support device 20 executes a process of calculating a visibility index (step S15). Specifically, the analysis unit 212 of the control unit 21 generates a map (visibility condition map) showing the distribution of statistical values of visibility distances for each area recorded in the analysis result storage unit 23. Furthermore, the analysis unit 212 calculates a visibility index by integrating the visibility evaluation values for the building model B1. Here, the analysis unit 212 calculates the average value of the visibility evaluation values. Then, the analysis unit 212 outputs the visibility condition map to the user device 10. Specifically, as shown in FIG. 6, a heat map HM1 (visibility situation map) is generated by arranging visibility evaluation values (statistical values of visibility distances) at each location in an evaluation target area AR1.

[0032] Here, if the user checks the heat map HM1 and determines that it is inappropriate, he or she makes design changes, such as changing the layout of the passageways, using the user device 10. In this case, the control unit 21 of the support device 20 re-executes the evaluation support process. As shown in Figure 7, a heat map HM2 with adjusted visibility is generated by changing the layout of the aisles and changing the shape of the evaluation area AR2. In this heat map HM2, the visibility distance is longer and the visibility index is improved compared to the heat map HM1.

[0033] (Action of this embodiment) Since the visibility distance is calculated according to the configuration of the evaluation target area, an index for evaluating the visibility condition of the evaluation target area is calculated.

[0034] (Effects of this embodiment) (1) In this embodiment, the control unit 21 of the support device 20 executes a process of specifying an evaluation target (step S11), thereby specifying an area for calculating visibility indices.

[0035] (2) In this embodiment, the control unit 21 of the support device 20 executes a process for identifying the line of sight direction (step S12). This allows components within the field of view to be identified within the evaluation target area AR1. The design information of these components allows the evaluation of their influence on the line of sight (such as occlusion or transparency).

[0036] (3) In this embodiment, the control unit 21 of the support device 20 executes a process of calculating the visibility distance within the field of view (step S13) and a process of calculating the statistics of the visibility distance (step S14). This allows the visibility situation to be grasped at the viewpoint position.

[0037] (4) In this embodiment, the control unit 21 of the support device 20 executes a process of calculating a visibility index (step S15), thereby making it possible to comprehensively evaluate the visibility conditions in the evaluation target area.

[0038] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility. In the above embodiment, the control unit 21 of the assistance device 20 executes a process of identifying an evaluation target (step S11). Here, an evaluation target area (a passage in this embodiment) is identified in the building model. The evaluation target area is not limited to a passage. For example, it may be applied to an interior of a room. The evaluation target area may also be identified in response to an instruction from the user device 10.

[0039] In the above embodiment, the control unit 21 of the support device 20 executes a process of identifying the gaze direction (step S12). Here, the gaze directions of the gaze P1 are each set of directions obtained by dividing 360 degrees into eight equal parts. The gaze directions of the gaze P1 are not limited to this. All directions or any other direction may be used. Furthermore, the gaze direction is not limited to a plane, and taking into consideration a person's three-dimensional visual field, a three-dimensional visual field extending in a cone shape from the viewpoint may be used. Furthermore, the control unit 21 of the support device 20 may identify a highly likely direction depending on the location of the person and use this direction. For example, in the case of a passageway, the control unit 21 may identify the direction of the flow line along the passageway and identify the direction based on this flow line. In this case, for example, the direction along the flow line may be weighted.

[0040] In the above embodiment, the control unit 21 of the support device 20 executes a process of calculating the line-of-sight distance in the line-of-sight direction (step S13). Here, the distance may be adjusted according to the transmittance of the component. For example, when the transmittance of a component is 50% compared to 100%, the line-of-sight distance is shortened according to the transmittance. The control unit 21 may also adjust the line-of-sight distance according to the illuminance (brightness of the space) inside the building. In this case, the control unit 21 identifies the arrangement of light sources such as lighting fixtures and predicts the illuminance of each area inside the building. Then, the line-of-sight distance is adjusted to be shorter in dark areas compared to bright areas. In the above embodiment, a line-of-sight distance calculation process is performed within the field of view (step S13). Here, the line-of-sight distance is calculated to be the distance inside the building, excluding the area outside the building. Alternatively, the line-of-sight distance outside the building may be included. In this case, for example, the distance to an obstacle beyond a window may be used as the line-of-sight distance, or a weighted value of the line-of-sight distance outside the building may be added to the line-of-sight distance inside the building. This allows the visibility situation to be evaluated taking the area outside the building into consideration.

[0041] In the above embodiment, the control unit 21 of the support device 20 executes a process of calculating a statistical value of the visibility distance (step S14). Here, an average value is used as the statistical value of the visibility distance. The statistical value is not limited to the average value as long as it is an index that can evaluate the visibility situation. For example, a maximum value may be used. In the above embodiment, the control unit 21 of the support device 20 executes a process of calculating a visibility index (step S15). Here, the analysis unit 212 calculates a visibility index by integrating visibility evaluation values for the building model B1. The visibility index may be any information that represents the visibility situation, and a heat map may be used.

[0042] Next, the technical ideas that can be understood from the above-described embodiment and other examples will be described below. (a) the control unit In the building model, a transmittance of the element model is specified; 2. The evaluation support device according to claim 1, wherein the visibility distance is calculated in accordance with the transmittance.

[0043] (b) The evaluation support device according to claim 1 or (a) above, characterized in that the control unit specifies the transmittance using attribute information of each element model included in the design information.

[0044] (c) The evaluation support device according to (a) and (b) above, characterized in that the control unit identifies the evaluation target area using attribute information of the element model. (d) The evaluation support device according to any one of (a) to (c) above, characterized in that the control unit generates a heat map of line-of-sight distance in the evaluation target area.

[0045] (e) The evaluation support device according to any one of (a) to (d) above, characterized in that the control unit identifies the gaze direction in accordance with the movement of a person in the evaluation target area. [Explanation of symbols]

[0046] AR1, AR2...evaluation target area, B1...building model, M1...element model, P1...viewpoint, 10...user device, 20...support device, 21...control unit, 211...management unit, 212...analysis unit, 22...design information storage unit, 23...analysis result storage unit.

Claims

1. An evaluation support device including a control unit that supports the design of a building arranged in a three-dimensional space, The control unit Obtain a building model with element models placed in the interior space, calculating a line-of-sight distance to the element model for each line-of-sight direction of each viewpoint position set in the evaluation target region of the internal space; An evaluation support device that calculates a visibility index in accordance with a distribution of statistical values of the visibility distance in the evaluation target area.

2. A method for supporting the design of a building using an evaluation support device including a control unit that supports the design of a building arranged in a three-dimensional space, the method comprising: The control unit Obtain a building model with element models placed in the interior space, calculating a line-of-sight distance to the element model for each line-of-sight direction of each viewpoint position set in the evaluation target region of the internal space; An evaluation support method characterized by calculating a visibility index in accordance with a distribution of statistical values of the visibility distance in the evaluation target area.

3. A program for supporting the design of a building using an evaluation support device including a control unit that supports the design of a building arranged in a three-dimensional space, The control unit Obtain a building model with element models placed in the interior space, calculating a line-of-sight distance to the element model for each line-of-sight direction of each viewpoint position set in the evaluation target region of the internal space; An evaluation support program characterized by functioning as a means for calculating a visibility index in accordance with the distribution of the statistical values of the visibility distance in the evaluation target area.

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