JP6506336B2 - Building energy saving performance calculation support device, building energy saving performance calculation support method and computer program - Google Patents

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 is trying to build a new building, or remodeling, calculates the energy consumption of a building based on the Act on the Rational Use of Energy (hereinafter referred to as the "Energy Saving Act"; Non Patent Literature 1), It is necessary to submit the result. To calculate the energy consumption of buildings, the “Energy Consumption Performance Calculation Program (Housing Version)” (Non-Patent Document 2) provided by the National Research Institute for Building Development (Non-Patent Document 2) (Non-Patent Document 3) and the like (hereinafter, programs provided by these building research institutes are referred to as “kenken programs”). The building owner inputs data of a predetermined building into the R & D program and calculates the energy consumption performance (hereinafter referred to as “building energy saving performance”), whereby the building scheduled for construction is the energy defined in the Energy Saving Act. It is necessary to confirm that the consumption performance (hereinafter referred to as "energy saving standard") is satisfied. The data of the building required in the above calculation is a lot of data such as the direction of the wall of the building, the type of the part of the wall of the building, the presence or absence of air conditioning, the area of the room, the length of the periphery of the room In addition, it contains many numerical data calculated from the design drawings of buildings.

Act on the Rational Use of Energy, etc. National Research Institute for Building Research [Search on March 21, 2017], Internet <URL: http://house.app.lowenergy.jp/> National Research Institute for Building Research [Search on March 21, 2017], Internet <URL: http://envelope.app.lowenergy.jp/>

  Since the number of predetermined data required for the R & D program is large, the work of preparing the data requires a great deal of effort. Providing data on the orientation of the exterior wall of the room was also a labor-intensive task. Conventionally, in order to prepare data on the orientation of the outer wall of a room using a design drawing of electronic data, CAD (Computer aided) of an operation that the owner designates the room and any one point inside the outer wall of the room design) At least a total of three operations with the two operations indicated above were required. The number of data indicating the orientation of the outer wall increases as the number of rooms increases. Therefore, when the number of rooms increases, it becomes an issue that the labor of the building owner increases, and automation has been required.

  In view of the above circumstances, the present invention automates the work of preparing data indicating the orientation of the outer wall in the energy saving calculation and reduces the effort of the user, building energy saving performance calculation support device, building energy saving performance calculation support method and computer program It is intended to be provided.

  According to an aspect of the present invention, there is provided an input unit for acquiring information indicating an area surrounded by a straight line in a two-dimensional design drawing of a building displayed on a display unit, and information instructing an edge of the area. The direction of the one side required in the energy saving calculation, defined by the direction of the vector having the start point on the one side of the vectors perpendicular to the one side and the direction toward the inside of the region, the input unit The area has information on the orientation of the side based on the wall orientation determination unit to be determined based on the information indicating the side acquired by the step and the information indicating the area acquired by the input unit It is a building energy saving performance calculation support device provided with the belonging field judging part which judges that it is a field.

  One embodiment of the present invention is the building energy saving performance calculation support device described above, wherein the wall orientation determination unit generates a midpoint of a side indicated by the information indicating the one side; It exists on a straight line perpendicular to the one side through the middle point, and each other exists on the other side of the one side, and further away from the middle point 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 existing first virtual point and the second virtual point; a first virtual area surrounded by the apex of the area and the first virtual point; Information indicating the vertex of the area and the second virtual area surrounded by the second virtual point is used to determine the size of the area between the area generation unit and the first virtual area and the second virtual area. The area of the first virtual area is larger by the judgment of the area judgment unit and the area judgment unit. When it is determined that the first virtual point is an end point, a virtual vector starting from the middle point is generated, and the area of the second virtual area is larger by the determination of the area determination unit. When it is determined that the virtual vector generation unit generates information indicating a virtual vector starting from the middle point as the end point and the second virtual point as an end point, the virtual vector and the unit length input in advance And an orientation determination unit that determines an orientation based on an angle between the orientation vector and the orientation vector.

  According to one aspect of the present invention, there is provided an input step of acquiring information indicating an area surrounded by a straight line in a two-dimensional design drawing of a building displayed on the display unit, and information indicating an edge of the area. The direction of the one side necessary for energy saving calculation is defined by the direction of the vector having the start point on the one side among the vectors perpendicular to the one side and the direction is the direction toward the inside of the area, the input The area is determined based on the wall orientation determining step of determining the orientation of the one side based on the information indicating the side acquired by the unit, and the information indicating the area acquired at the input step. It is a building energy saving performance calculation method provided with the belonging field judging step which judges that it is the field which has the information on the direction of.

  One aspect of the present invention is a computer program for causing a computer to function as the above-described 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, which automates work of preparing data indicating the orientation of outer wall in energy saving calculation and reduces 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 example of a design drawing. The figure which shows the specific example of area | region relevant information. FIG. 8 is a diagram for explaining an algorithm of wall orientation determination used in the wall orientation determination unit 16; The flowchart which shows the specific example of the flow of a process of the building energy-saving performance calculation assistance apparatus 1. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1: is a figure which shows the structural example of the building energy-saving performance calculation assistance apparatus 1 in 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 external 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 provided with the registration unit 17. Note that all or some of the functions of the building energy saving performance calculation support device 1 are realized using hardware such as an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA). It may be done. 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 a 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 (mouse, tablet or the like), a button, a touch panel or the like. The input unit 11 is operated by the user when inputting an instruction of the user into 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, to the building energy saving performance calculation support device 1, an input signal generated by the input device according to the user's input. 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, values of an axis in the horizontal direction (eg, X axis) with the upper left of the screen of the display device as an origin (eg, X coordinate) and a value of the axis in the vertical direction ( 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 an area designated by the user on the screen to the building energy saving performance calculation support device 1 using, for example, a pointing device. It is also good. The graphic information includes information such as screen coordinates and lengths representing points of the graphic and sides of the graphic.

  The display unit 12 is an image display device such as a CRT (Cathode Ray Tube) display, a liquid crystal display, and an organic EL (Electro Luminescence) display. The display unit 12 displays information on a plan 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 unit 12 generates a video signal for displaying a design drawing of a building, and outputs the video signal to an image display device connected to itself.

  The display control unit 13 controls the 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 storage unit 14 stores information (hereinafter, referred to as “design drawing information”) required to display a design drawing of a building on a screen. The design drawing information includes information of coordinates representing an area such as a room or a corridor of the design drawing displayed on the display unit 12. The design drawing information includes area related information described later.

  The conversion unit 15 coordinates the screen coordinates obtained by the input unit 11 (hereinafter referred to as "design drawing coordinates") on the design drawing designated by the pointing device in the display unit 12 (hereinafter referred to as "designated position"). To convert. The design drawing coordinates are, for example, Cartesian coordinates, and are coordinates with the origin set in advance in the design drawing as the origin of the coordinates and the length set in advance in the design drawing as the unit length of each of two orthogonal axes. May be

  The wall orientation determination unit 16 determines the orientation of the wall based on the graphic information on the input wall. The input wall is, for example, a wall designated by the user in screen coordinates on the design drawing, and input to the building energy saving performance calculation support device 1 by the input unit 11. The wall orientation determination unit 16 includes a middle point 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 area determination unit 167.

  The midpoint generation unit 161 generates midpoints of line segments representing the input wall instructed on the design drawing by the user. The coordinates of the middle point are generated based on the coordinates of the end points of the line segment representing the input wall.

  The virtual point generation unit 162 generates two virtual points of a first virtual point and a second virtual point on the design drawing. The distance between the first virtual point and the second virtual point is the size of the human body on a straight line perpendicular to the input wall through the middle point generated by the middle point generation unit 161 described above. It is located in a place sufficiently short. The first virtual point and the second virtual point are in symmetrical positions across the input wall. A virtual point is not an existing point but a point temporarily set in the determination process of the wall orientation determination unit 16. The size of a person indicates, for example, the average chest of the person, the average height of the person, and the like. The size of a person is an example of the length of each part of the human body.

  The area generation unit 163 generates two areas of a first virtual area and a second virtual area. The first virtual area is an area formed by the first virtual point and the vertex of the area determined to be the area to which the input wall belongs by the belonging area determination unit 167 described later. The second virtual area is an area formed by the vertex of the area determined to be the area to which the input wall belongs by the belonging area determining unit 167 described later and the second virtual point. Here, the virtual area is not an actual area but an area 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 area and the second virtual area generated by the area generation unit 163, and determines a virtual area having a small area.

  The virtual vector generation unit 165 generates, on the design drawing, a virtual vector having the middle point as a start point, with the virtual point that generates the virtual area determined to have a small area by the area determination unit 164 as an end point. Here, the virtual vector does not mean to exist, but means to be tentatively set in the determination processing of the wall orientation determination unit 16.

  The orientation determination unit 166 determines the orientation of the input wall based on the virtual vector generated by the virtual vector generation unit 165 and the orientation vector of the design drawing. The orientation of the wall is defined by the direction of the vector having the starting point of the vectors perpendicular to the wall on the line segment representing the wall, and the direction of the vector is the direction toward the inside of the region to which the wall belongs.

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

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

  FIG. 2 is a diagram illustrating a specific example of the design drawing 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 orientation vector 20 which is a vector defining the north side in the design drawing are shown. The design drawings displayed on the display unit 12 are displayed on the CAD, and as described above, in the design drawing information representing the design drawings, coordinate information of an area representing a room, a corridor, or the like is registered in advance. Also in the specific example shown in FIG. 2, the area R1 is an area in which the coordinate information is registered in advance in the design drawing information. The region R1 is a region surrounded by the vertex P1, the vertex P2, the vertex P3, and the vertex P4. The unit reference orientation vector 20 is a vector of 1 representing the orientation of the design drawing. In the area R1, area related information such as the name, area, and outer circumference of the area R1 is registered in the storage unit 14 in advance in association with the area R1.

FIG. 3 is a diagram showing a specific example of the area related information. The area related information may be, for example, in the form of a record. A record D101 illustrated in FIG. 3 includes information such as room name, area, outer circumference, coordinate information, number of walls, and direction and width of each wall. A record D101 represents information on an area surrounded by vertices P1, P2, P3, and 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. Record D101 represents the room name of a region R1 is a library, for example the area of the region R1 is 207.60m ^2.

  An algorithm for wall orientation determination used in the wall orientation determination unit 16 will be described below using the drawings.

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

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

  In architectural designs, for example, there is rarely a space sufficiently smaller than the size of a person, such as a space having sides of a millimeter order length. Therefore, in the wall orientation determination algorithm, a value sufficiently smaller than the size of a person is set as the distance a1 and the distance a2 so that the line segment Q1C does not intersect with another side 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 area R11 is a specific example of the first virtual area. 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 area R11 is referred to as a first virtual area R11, and the area E12 is referred to as a second virtual area R12. FIG. 4E shows a virtual vector 41 having the middle point C as a start point and the first virtual point Q1 as an end point. FIG. 4F shows that the angle between the unit reference azimuth vector 20 and the virtual vector 41 is Θ.

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

  After the determination of the area size, as shown in FIG. 4E, the virtual vector generation unit 165 starts the middle point C and ends at the virtual vector 41 whose end point is the first virtual point Q1 included in the area R1. Generate

  The azimuth determining unit 166 calculates an angle 値 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 magnitude of the virtual vector 41 as a cosine function. Calculated by giving to the inverse function. Note that the size and direction of the unit reference orientation vector 20 are input in advance to the building energy saving performance calculation support device 1 by the input unit 11 for each design drawing.

  The orientation determining unit 166 determines one of the eight orientations having the closest value of the angle Θ as the orientation of the wall. In addition, eight azimuths are azimuths which divided north into 0 degree, and divided 360 degrees into eight by 22.5 steps.

  FIG. 5 is a flowchart showing a specific example of the process flow of the building energy saving performance calculation support device 1. First, the wall orientation determination unit 16 acquires graphic information on the input wall instructed by the user via the user's operation on the input unit 11 (step S101). Furthermore, the wall orientation determination unit 16 acquires information on the input area to which the input wall instructed by the user belongs via the user's operation on the input unit 11 (step S102). The midpoint generation unit 161 generates the midpoint C of the line segment P1P4 representing the acquired input wall (step S103). The first virtual point Q1 and the second virtual point generation unit 162 exist at positions separated by a distance sufficiently shorter than the size of the human body in the direction perpendicular to the line segment P1P4 through the middle point C. A virtual point Q2 is generated on the design drawing (step S104). The area generation unit 163 generates a first virtual area R11 surrounded by the apex of the area instructed in step S102 and the first virtual point Q1, and the apex of the area instructed in step S102 and the second virtual point Q2 And information on the second virtual area R12 surrounded by the and (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). If the first virtual area R11 is smaller than the second virtual area R12 (step S107: YES), the virtual vector generation unit 165 uses the middle point C as a start point and the virtual vector 41 whose end point is the first virtual point Q1. It generates (step S108). Next, after the azimuth determination unit 166 calculates an angle formed by the unit reference azimuth vector input in advance and the virtual vector, it is determined which of the eight azimuths the wall azimuth is based on the above-mentioned angle. (Step S110). The wall orientation information registration unit 17 stores the orientation determined in step S110 in the storage unit 14 as area related information of the input area (step S111). If the first virtual area R11 is not smaller than the second virtual area R12 (step S107: NO), the virtual vector generation unit 165 sets the middle point C as a start point and the second virtual point Q2 as an end point Are generated (step S109). Next, after the azimuth determination unit 166 calculates the angle formed by the unit reference azimuth vector input in advance and the virtual vector 42, it is determined which of the eight azimuths the wall azimuth is based on the above-mentioned angle. (Step S110). The wall orientation information registration unit 17 stores the orientation determined in step S110 in the storage unit 14 as area related information of the input area (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 the need for the user's operation of specifying the inside of the area. Therefore, it is possible to reduce the effort of the user who prepares the data indicating the orientation of the outer wall in the energy saving calculation.

(Modification)
In the above-mentioned step S101, the user inputs graphic information on the input wall, and in the above-mentioned step S102, the user inputs information on the input area to which the input wall belongs. When the user wants information on the orientation of the peripheral wall surrounding the building, the user may only input information indicating the coordinates of the peripheral. In this case, based on the information indicating the coordinates of the outer circumference and the coordinate information of the area included in the area related information of the previously registered area, the overlap between the input wall and the input area is automatically made from the overlap. 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 areas 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 design and the like within the scope of the present invention. Accordingly, the scope of the present invention is to be defined solely by the appended 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 ... Storage part, 15 ... Conversion part, 16 ... Wall direction determination part, 161 ... Mid point generation part , 162: virtual point generation unit, 163: area generation unit, 164: area determination unit, 165: virtual vector generation unit, 166: orientation determination unit, 167: belonging area determination unit, 17: wall orientation information registration unit

Claims (4)

An input unit for acquiring information indicating an area surrounded by a straight line in a two-dimensional design drawing of a building displayed on the display unit, and information instructing an edge of the area;
The direction of the one side necessary for energy saving calculation is defined by the direction of the vector having the start point on the one side among the vectors perpendicular to the one side and the direction is the direction toward the inside of the area, the input A wall orientation determining unit that determines based on the information indicating the one side acquired by the unit and an orientation vector that is a vector input in advance and that is a vector indicating an orientation in the design drawing ;
An affiliation area determination unit that determines that the area is an area having the information of the orientation of the one side based on the information indicating the area acquired by the input unit;
Building energy saving performance calculation support device equipped with. The wall orientation determination unit
A midpoint generation unit that generates a midpoint of the side indicated by the information indicating the side;
They exist on a straight line perpendicular to the one side through the middle point, and each other exists on both sides of the one side, and further away from the middle point by a distance sufficiently shorter than the length of each part of the human body. A virtual point generation unit that generates information indicating a first virtual point and a second virtual point that are present;
Region generation unit for information indicating a first virtual region surrounded by the vertex of the region and the first virtual point, and a second virtual region surrounded by the vertex of the region and the second virtual point When,
An area determination unit that determines the size of the area between the first virtual area and the second virtual area;
When it is determined by the determination of the area determination unit that the area of the first virtual area is smaller , a virtual vector is generated with the first virtual point as an end point and the middle point as a start point, If it is determined by the determination of the area determination unit that the area of the second virtual area is smaller , information indicating an imaginary vector starting from the middle point as the end point with the second virtual point as the end point is used. A virtual vector generation unit to generate
And orientation determining section for determining the orientation based on an angle between the orientation vector of the virtual vector and previously input unit length,
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 a side of the region indicated by the computer;
Computer, wherein a start point of the vertical vector to one side on the one side, the orientation is defined by the direction of the vector is oriented toward the region, the orientation of the one side required in the energy saving calculations A wall orientation for determining the orientation of the one side based on the information indicating the one side acquired in the input step and an orientation vector that is a vector input in advance and is a vector indicating an orientation in the design drawing Decision step,
Computer, based on the information indicating the region obtained by the input step, the region determination step of determining that the region is a region having information of the bearing of the one side,
Building energy saving performance calculation support method provided with.   A computer program for causing a computer to function as the building energy saving performance calculation support device according to any one of claims 1 and 2.

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