JP2018163465A - Building energy-saving performance calculation support apparatus, building energy-saving performance calculation support method and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building energy-saving performance calculation support device, a building energy-saving performance calculation support method and a computer program for automating work for preparing data indicative of an orientation of the outer wall in energy saving calculation to reduce user's labor.SOLUTION: The information processing apparatus includes an input unit for acquiring information designating a region enclosed by a straight line in a two-dimensional design drawing of a building displayed on a display unit, and information designating one side of the region; a wall azimuth determination unit for determining an azimuth of the one side necessary for energy saving calculation defined by a direction facing into the region of a vector having a start point on the one side among vectors perpendicular to the one side based on the region designating information acquired by the input unit; and a belonging region determination unit for determining that the region is a region with information designating the azimuth of the one side based on the region designating information acquired by the input unit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a building energy saving performance calculation support device, a building energy saving performance calculation support method, and a computer program.

  In the past, a building owner who would like to build a new building, renovate, etc. would calculate the energy consumption of the building based on the Law on the Rational Use of Energy (hereinafter referred to as the “Energy Saving Law”; Non-Patent Document 1) The results need to be submitted. To calculate the energy consumption of buildings, the “Energy Consumption Performance Calculation Program (Housing Version)” (Non-patent Document 2) provided by the National Institute for Architectural Research, (Non-Patent Document 3) and the like (hereinafter, the program provided by these architectural research institutes is referred to as “the Kenken program”). The building owner inputs the data of a given building into the Kenken program and calculates the energy consumption performance (hereinafter referred to as “building energy-saving performance”). It is necessary to confirm that the consumption performance (hereinafter referred to as “energy saving standard”) is satisfied. The building data required for the above calculation includes a lot of data such as the orientation of the building wall, the type of part of the building wall, the presence or absence of air conditioning, the area of the room, the length of the outer periphery of the room, etc. It also contains a lot of numerical data calculated from the design drawings of buildings.

Law about rationalization of use of energy National Institute for Architectural Research [Search on March 21, 2017], Internet <URL: http://house.app.lowenergy.jp/> National Institute for Architectural Research [Search on March 21, 2017], Internet <URL: http://envelope.app.lowenergy.jp/>

  Since there are many predetermined data required for the Kenken program, the work of preparing the data requires a great deal of labor. Preparing data on the direction of the outer wall of the room was also an operation that required a great deal of labor. Conventionally, in order to prepare orientation data of an outer wall of a room using a design drawing of electronic data, an operation of the owner instructing the room and an arbitrary point on the outer wall of the room and the inside of the room are CAD (Computer aided) A total of three operations with the two operations indicated above in design) were required. The number of data indicating the orientation of the outer wall increases as the number of rooms increases. For this reason, as the number of rooms increases, the labor of the builder increases, and automation has been required.

  In view of the above circumstances, the present invention provides a building energy-saving performance calculation support device, a building energy-saving performance calculation support method, and a computer program that automate the work of preparing data indicating the direction of the outer wall in energy-saving calculation and reduce the user's labor. It is intended to provide.

  One aspect of the present invention is an input unit for acquiring information indicating a region surrounded by a straight line in a two-dimensional design drawing of a building displayed on a display unit, and information indicating one side of the region; The direction of the one side required in the energy saving calculation, which is defined by the direction of a vector having a starting point on the one side among vectors perpendicular to one side and the direction being the direction toward the region, is the input unit. Based on the information indicating the one side acquired by the above, the wall orientation determining unit to be determined, and based on the information indicating the region acquired by the input unit, the region has information on the direction of the one side. It is a building energy-saving performance calculation support apparatus provided with the affiliation area determination part which determines that it is an area | region.

  One aspect of the present invention is the building energy-saving performance calculation support device, wherein the wall orientation determination unit includes a midpoint generation unit that generates a midpoint of the side indicated by the information indicating the one side, Exists on a straight line passing through the middle point and perpendicular to the one side, and exists on both sides of the one side, and is further away from the middle point by a distance sufficiently shorter than the length of each part of the human body. A virtual point generator that generates information indicating the first virtual point and the second virtual point that are present; a first virtual region surrounded by a vertex of the region and the first virtual point; and Information indicating the second virtual region surrounded by the vertex of the region and the second virtual point is used to determine the size of the area of the region generation unit and the first virtual region and the second virtual region The area of the first virtual region is larger by the determination of the area determination unit and the area determination unit. Is determined, the first virtual point is an end point and a virtual vector starting from the middle point is generated, and the area of the second virtual region is larger by the determination of the area determination unit The virtual vector generation unit for generating information indicating a virtual vector having the second virtual point as an end point and the midpoint as a start point, and the unit length of the unit length previously input with the virtual vector. An orientation determining unit that determines an orientation based on an angle formed with the orientation vector;

  One aspect of the present invention is an input step of acquiring information indicating a region surrounded by a straight line in a two-dimensional design drawing of a building displayed on the display unit, and information indicating one side of the region; The direction of the one side necessary for energy saving calculation, which is defined by the direction of the vector having a start point on the one side among the vectors perpendicular to the one side and the direction being the direction toward the inside, is the input. Based on the information indicating the one side acquired by the unit, the wall orientation determining step for determining the direction of the one side, and the information indicating the region acquired by the input step, the region is the one side It is an affiliation area | region determination step which determines that it is an area | region which has the information of azimuth | direction of a building.

  One aspect of the present invention is a computer program for causing a computer to function as the building energy-saving performance calculation support device.

  According to the present invention, it is possible to provide a building energy-saving performance calculation support device, a building energy-saving performance calculation support method, and a computer program that automate the work of preparing data indicating the direction of the outer wall in energy-saving calculation and reduce the user's labor. It is.

The figure which shows the structural example of the building energy saving performance calculation assistance apparatus 1 in embodiment. The figure which shows the specific example of a design drawing. The figure which shows the specific example of area | region relevant information. The figure explaining the algorithm of wall orientation determination used in the wall orientation determination part 16. FIG. The flowchart which shows the specific example of the flow of a process of the building energy saving performance calculation assistance apparatus.

  Embodiments of the present invention will be described below with reference to the drawings. Drawing 1 is a figure showing the example of composition of building energy-saving performance calculation support device 1 in an embodiment. The building energy-saving performance calculation support device 1 is configured using an information processing device such as a personal computer or a server. The building energy saving performance calculation support device 1 includes a CPU (Central Processing Unit), a memory, an auxiliary storage device, and the like connected by a bus. The building energy-saving performance calculation support device 1 executes the outer wall orientation determination program, whereby the input unit 11, the display unit 12, the display control unit 13, the storage unit 14, the conversion unit 15, the wall orientation determination unit 16, and the wall orientation information. It functions as an apparatus including the registration unit 17. All or part of each function of the building energy-saving performance calculation support device 1 is realized by using hardware such as an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA). May be. The outer wall orientation determination program may be recorded on a computer-readable recording medium. The computer-readable recording medium is, for example, a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in the computer system. The outer wall orientation determination program may be transmitted via a telecommunication line.

  The input unit 11 is configured using an existing input device such as a keyboard, a pointing device (such as a mouse or a tablet), a button, or a touch panel. The input unit 11 is operated by the user when inputting a user instruction to the building energy saving performance calculation support device 1. The input unit 11 may be an interface for connecting the input device to the building energy saving performance calculation support device 1. In this case, the input unit 11 inputs an input signal generated according to a user input in the input device to the building energy saving performance calculation support device 1. The input unit 11 acquires coordinates (hereinafter referred to as “screen coordinates”) indicating the position on the screen designated by the user using, for example, a pointing device. The screen coordinates are, for example, the value of the horizontal axis (for example, the X axis) (for example, the X coordinate value) and the value of the vertical axis (for example, the Y axis) (for example, the Y coordinate value) with the origin at the upper left of the screen It may be expressed using a combination. Furthermore, the input unit 11 inputs information (hereinafter referred to as “graphic information”) representing a straight line or a region designated by the user on the screen to the building energy saving performance calculation support device 1 using, for example, a pointing device. Also good. The graphic information includes information such as screen coordinates and lengths representing graphic points and graphic edges.

  The display unit 12 is an image display device such as a CRT (Cathode Ray Tube) display, a liquid crystal display, or an organic EL (Electro Luminescence) display. The display part 12 displays the information regarding the design drawing of a building. The display unit 12 may be an interface for connecting the image display device to the building energy saving performance calculation support device 1. In this case, the display part 12 produces | generates the video signal for displaying the design drawing of a building, and outputs a video signal to the image display apparatus connected to self.

  The display control unit 13 controls display on the display unit 12.

  The storage unit 14 is configured using a storage device such as a magnetic hard disk or a semiconductor storage device. The memory | storage part 14 memorize | stores the information (henceforth "design drawing information") required in order to display the design drawing of a building on a screen. The design drawing information includes information on coordinates representing areas such as rooms and hallways of the design drawing displayed on the display unit 12. The design drawing information includes area-related information described later.

  The conversion unit 15 converts the screen coordinates obtained by the input unit 11 into coordinates (hereinafter, “design drawing coordinates”) indicating positions on the design drawing (hereinafter referred to as “designated positions”) designated by the pointing device on the display unit 12. Is converted to The design drawing coordinates are, for example, Cartesian coordinates, where the origin set in advance in the design drawing is the origin of the coordinates, and the length set in advance in the design drawing is the unit length of each of the two axes orthogonal to each other. May be.

  The wall orientation determining unit 16 determines the orientation of the wall based on the graphic information regarding the input wall. The input wall means, for example, a wall that is designated by the user on the screen coordinates on the design drawing and is input to the building energy saving performance calculation support device 1 by the input unit 11. The wall orientation determination unit 16 includes a midpoint generation unit 161, a virtual point generation unit 162, an area generation unit 163, an area determination unit 164, a virtual vector generation unit 165, an orientation determination unit 166, and a belonging region determination unit 167.

  The midpoint generator 161 generates a midpoint of the line segment representing the input wall designated on the design drawing by the user. The coordinates of the midpoint are generated based on the coordinates of both end points of the line segment representing the input wall.

  The virtual point generator 162 generates two virtual points, a first virtual point and a second virtual point, on the design drawing. The first virtual point and the second virtual point are on a straight line passing through the midpoint generated by the midpoint generation unit 161 described above and perpendicular to the input wall, and the distance from the midpoint is the size of the human body. It is located in a place sufficiently shorter than that. The first virtual point and the second virtual point are located symmetrically across the input wall. The virtual point is not a point that actually exists but a point that is temporarily set in the determination process of the wall orientation determination unit 16. The size of the person represents, for example, an average chest circumference of the person, an average height of the person, and the like. The size of the person is an example of the length of each part of the person's body.

  The area generation unit 163 generates two areas, a first virtual area and a second virtual area. The first virtual area is an area formed by a vertex of the area determined to be an area to which the input wall belongs by the affiliation area determination unit 167 described later and the first virtual point. The second virtual area is an area formed by a vertex of the area determined to be an area to which the input wall belongs by the affiliation area determination unit 167 described later and the second virtual point. Here, the virtual region is not a real region but a region temporarily set in the determination process of the wall orientation determination unit 16.

  The area determination unit 164 compares the areas of the first virtual region and the second virtual region generated by the region generation unit 163, and determines a virtual region having a small area.

  The virtual vector generation unit 165 generates, on the design drawing, a virtual vector having the virtual point that generates the virtual region determined to have a small area by the area determination unit 164 as an end point and the midpoint as a start point. Here, the virtual vector means not a real existence but a provisionally set in the determination process of the wall orientation determination unit 16.

  The orientation determining unit 166 determines the orientation of the input wall based on the virtual vector generated by the virtual vector generating unit 165 and the orientation vector of the design drawing. The orientation of the wall is defined as a vector orientation that has a starting point on a line segment representing the wall among vectors perpendicular to the wall, and the direction of the vector is a direction toward the inside of the region to which the wall belongs.

  The affiliation area determination unit 167 determines that the area on the design drawing instructed by the user via the input unit 11 is the area to which the input wall belongs.

  The wall orientation information registration unit 17 is instructed by the user on the design drawing on the input wall orientation information determined by the wall orientation determination unit 16 and is input to the building energy saving performance calculation support device 1 by the input unit 11. Is registered in the storage unit 14 as information (hereinafter referred to as “region-related information”) related to the region (hereinafter referred to as “input region”).

  FIG. 2 is a diagram illustrating a specific example of the design diagram displayed on the display unit 12. In the design drawing, for example, a region R1 representing one of the rooms included in the building represented by the design drawing and a unit reference direction vector 20 which is a vector defining the north side in the design drawing are shown. The design drawing displayed on the display unit 12 is displayed on the CAD. As described above, coordinate information of an area representing a room, a hallway, or the like is registered in advance in the design drawing information representing the design drawing. Also in the specific example shown in FIG. 2, the region R <b> 1 is a region whose coordinate information is registered in the design drawing information in advance. The region R1 is a region surrounded by the vertex P1, the vertex P2, the vertex P3, and the vertex P4. The unit reference azimuth vector 20 is a vector having a magnitude of 1 indicating the azimuth of the design drawing. In the region R1, region-related information such as the name, area, and outer circumference of the region R1 is registered in advance in the storage unit 14 in association with the region R1.

FIG. 3 is a diagram illustrating a specific example of region-related information. The area related information may be in the form of a record, for example. A record D101 shown in FIG. 3 includes information such as a room name, area, outer periphery, coordinate information, the number of walls, and the direction and width of each wall. The record D101 represents information related to the area surrounded by the vertex P1, the vertex P2, the vertex P3, and the vertex P4 indicated by the coordinate information. A region surrounded by the vertex P1, the vertex P2, the vertex P3, and the vertex P4 is a region R1 in FIG. The record D101 indicates that the room name of the region R1 is a library, and for example, the area of the region R1 is 207.60 m ² .

  The wall orientation determination algorithm used in the wall orientation determination unit 16 will be described below with reference to the drawings.

  FIG. 4 is a diagram for explaining a wall orientation determination algorithm used in the wall orientation determination unit 16. In the description of the algorithm for determining the wall orientation, the region R1 will be used as a specific example.

  FIG. 4A shows a midpoint C of the side P1P4 of the region R1. FIG. 4B shows points Q1 and Q2 that are generated from the midpoint C by a distance a1 and a distance a2. The points Q1 and Q2 are specific examples of the first virtual point and the second virtual point, respectively. The line segment Q1C and the line segment Q2C are perpendicular to the side P1P4.

  In architectural blueprints, there is rarely a space sufficiently smaller than the size of a person, such as a space having a side with a length of millimeter order. Therefore, in the algorithm for determining the wall orientation, the distance a1 and the distance a2 are set to values sufficiently smaller than the size of the person so that the line segment Q1C does not intersect with other sides such as the side P2P3. .

  FIG. 4C shows a region R11 spanned by the vertex P1, the vertex P2, the vertex P3, the vertex P4, and the vertex Q1. The region R11 is a specific example of the first virtual region. FIG. 4D shows a region R12 spanned by the vertex P1, the vertex P2, the vertex P3, the vertex P4, and the vertex Q2. The region R12 is a specific example of the second virtual region. Hereinafter, the point Q1 is referred to as a first virtual point Q1, the point Q2 is referred to as a second virtual point Q2, the region R11 is referred to as a first virtual region R11, and the region E12 is referred to as a second virtual region R12. FIG. 4E shows a virtual vector 41 having a middle point C as a start point and a first virtual point Q1 as an end point. FIG. 4F shows that the angle formed by the unit reference azimuth vector 20 and the virtual vector 41 is Θ.

  As shown in FIG. 4A, the midpoint generator 161 generates a midpoint C of the line segment P1P4 that is an input wall. Next, as illustrated in FIG. 4B, the virtual point generation unit 162 generates a first virtual point Q1 and a second virtual point Q2. The first virtual point Q1 and the second virtual point Q2 pass through the middle point C and exist on a straight line perpendicular to the line segment P1P4. The first virtual point Q1 and the second virtual point Q2 are on opposite sides of the line segment P1P4. The first virtual point Q1 and the second virtual point Q2 exist at a distance between the predetermined length a1 and the predetermined length a2 from the middle point C, respectively. The length a1 and the length a2 are each sufficiently shorter than the size of a person. Next, the algorithm for determining the wall orientation determines which of the first virtual point Q1 and the second virtual point Q2 exists inside the region R1. Using the generated first virtual point Q1 and second virtual point Q2, the region generation unit 163 uses the first virtual region R11 and the second virtual region R11 shown in FIGS. 4C and 4D. Are generated on the design drawing. Next, the area determination unit 164 determines which of the region R11 and the region R12 has a smaller area. In the case of the region R11 and the region R12 shown in FIGS. 4C and 4D, the region R11 has a smaller area.

  After determining the size of the area, as shown in FIG. 4E, the virtual vector generation unit 165 generates a virtual vector 41 having the middle point C as the start point and the first virtual point Q1 included in the region R1 as the end point. Generate.

  The azimuth determining unit 166 obtains an angle Θ formed by the virtual vector 41 and the unit reference azimuth vector 20, and a value obtained by normalizing the inner product of the virtual vector 41 and the unit reference azimuth vector 20 by the size of the virtual vector 41. It is calculated by giving to the inverse function. In addition, the magnitude | size and direction of the unit reference | standard azimuth | direction vector 20 are previously input into the building energy-saving performance calculation assistance apparatus 1 for every design drawing by the input part 11.

  The azimuth determining unit 166 determines one of the eight azimuths having the closest value of the angle Θ as the wall azimuth. Note that the eight directions are directions in which north is 0 ° and 360 ° is divided into eight at intervals of 22.5.

  FIG. 5 is a flowchart showing a specific example of the processing flow of the building energy-saving performance calculation support device 1. First, the wall orientation determination unit 16 acquires graphic information related to the input wall instructed by the user through the user's operation on the input unit 11 (step S101). Furthermore, the wall orientation determination unit 16 acquires information related to the input region to which the input wall instructed by the user belongs through the user's operation on the input unit 11 (step S102). The midpoint generator 161 generates a midpoint C of the line segment P1P4 representing the acquired input wall (step S103). The first virtual point Q1 and the second virtual point generator 162 are located at a position sufficiently shorter than the size of the human body in the direction perpendicular to the line segment P1P4 through the midpoint C. A virtual point Q2 is generated on the design drawing (step S104). The region generation unit 163 includes a first virtual region R11 surrounded by the vertex of the region designated in step S102 and the first virtual point Q1, and the vertex and second virtual point Q2 of the region designated in step S102. And information about the second virtual region R12 surrounded by (step S105). The area determination unit 164 determines a virtual area having a small area among the first virtual area R11 and the second virtual area R12 (step S106). When the first virtual region R11 is smaller than the second virtual region R12 (step S107: YES), the virtual vector generation unit 165 generates a virtual vector 41 having the middle point C as the start point and the first virtual point Q1 as the end point. Generate (step S108). Next, the azimuth determining unit 166 calculates an angle formed by the unit reference azimuth vector input in advance and the virtual vector, and then determines which of the eight azimuths of the wall is based on the formed angle. (Step S110). The wall orientation information registration unit 17 stores the orientation determined in step S110 as region related information of the input region in the storage unit 14 (step S111). When the first virtual region R11 is not smaller than the second virtual region R12 (step S107: NO), the virtual vector generation unit 165 has a virtual vector 42 having the middle point C as the start point and the second virtual point Q2 as the end point. Is generated (step S109). Next, the azimuth determining unit 166 calculates an angle formed by the unit reference azimuth vector input in advance and the virtual vector 42, and then determines which of the eight azimuths of the wall is based on the formed angle. (Step S110). The wall orientation information registration unit 17 stores the orientation determined in step S110 as region related information of the input region in the storage unit 14 (step S111).

  In the building energy-saving performance calculation support device 1 configured as described above, the orientation of the wall is automatically determined without requiring a user operation to specify the inside of the area. Therefore, it is possible to reduce the labor of the user who prepares data indicating the direction of the outer wall in the energy saving calculation.

(Modification)
In step S101 described above, the user inputs graphic information related to the input wall. In step S102 described above, the user inputs information related to the input area to which the input wall belongs. When information on the direction of the outer peripheral wall surrounding the building is desired, the user may simply input information indicating the outer peripheral coordinates. In this case, based on the information indicating the coordinates of the outer periphery and the coordinate information of the area included in the area-related information of the previously registered area, the input wall and the input area are automatically detected from the overlapping of coordinates. Information may be calculated and input to the building energy saving performance calculation support device 1. In this case, it is not necessary for the user to individually designate the input wall and the plurality of regions for each wall, and the orientations of the plurality of outer peripheral walls are automatically calculated.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention. Therefore, the scope of the present invention is defined only by the claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 ... Building energy-saving performance calculation assistance apparatus 1, 11 ... Input part, 12 ... Display part, 13 ... Display control part, 14 ... Memory | storage part, 15 ... Conversion part, 16 ... Wall orientation determination part, 161 ... Mid-point production | generation part 162 ... Virtual point generation unit, 163 ... Area generation unit, 164 ... Area determination unit, 165 ... Virtual vector generation unit, 166 ... Direction determination unit, 167 ... Affiliation region determination unit, 17 ... Wall direction information registration unit

Claims (4)

An input unit for acquiring information indicating a region surrounded by a straight line in the two-dimensional design drawing of the building displayed on the display unit, and information indicating one side of the region;
The direction of the one side necessary for energy saving calculation, which is defined by the direction of the vector having a start point on the one side among the vectors perpendicular to the one side and the direction being the direction toward the inside, is the input. Based on the information indicating the one side acquired by the unit, the wall orientation determining unit to determine,
Based on information indicating the area acquired by the input unit, a belonging area determination unit that determines that the area is an area having information on the direction of the one side;
Building energy saving performance calculation support device. The wall orientation determining unit
A midpoint generator for generating a midpoint of the side indicated by the information indicating the one side;
Exists on a straight line that passes through the midpoint and is perpendicular to the one side, exists across the one side, and is further away from the midpoint by a distance sufficiently shorter than the length of each part of the human body. A virtual point generation unit that generates information indicating the first virtual point and the second virtual point that exist,
An area generation unit displays information indicating a first virtual area surrounded by the vertex of the area and the first virtual point, and a second virtual area surrounded by the vertex of the area and the second virtual point When,
An area determination unit that determines the size of the area between the first virtual region and the second virtual region;
If it is determined by the area determination unit that the area of the first virtual region is larger, a virtual vector starting from the first virtual point and starting from the midpoint is generated. When the area determination unit determines that the area of the second virtual region is larger, information indicating a virtual vector having the second virtual point as an end point and the middle point as a start point A virtual vector generation unit to generate,
An azimuth determining unit that determines an azimuth based on an angle formed by the virtual vector and an azimuth vector of unit length input in advance;
The building energy-saving performance calculation support device according to claim 1 further comprising: An input step of acquiring information indicating a region surrounded by a straight line in a two-dimensional design drawing of a building displayed on the display unit, and information indicating one side of the region;
The direction of the one side necessary for energy saving calculation, which is defined by the direction of the vector having a start point on the one side among the vectors perpendicular to the one side and the direction being the direction toward the inside, is the input. A wall orientation determining step for determining the orientation of the one side based on the information indicating the one side acquired by the step;
Based on information indicating the area acquired by the input step, a belonging area determination step of determining that the area is an area having information on the direction of the one side;
Building energy saving performance calculation support method.   The computer program for functioning a computer as a building energy-saving performance calculation assistance apparatus as described in any one of Claim 1 and 2.

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