A method and system for drawing building electromechanical drawings

Abstract

The present invention relates to a method for drawing building electromechanical drawings, comprising the following steps: S1: creating a user's plane icon library, plane connection library and system module library; S2: calling plane icons and connections from the plane icon library and plane connection library, and calling system modules from the system module library; S3: combining and annotating the called plane icons and connections to generate a device plane diagram; combining and annotating the called system modules to generate a system diagram. In the above scheme, a method for creating, combining and annotating personalized icons quickly is adopted to realize an automatic drawing method that meets the personalized requirements of users. At the same time, since additional attributes are added to each equipment icon and connection, the accuracy of the information is ensured, and it can also be used for the automatic statistical function of the material table, and combined with the two-dimensional to three-dimensional mold turning tool, the function of automatic creation of three-dimensional drawings can be realized.

Description

Technical Field

[0001] The present invention relates to the field of architectural design, and more specifically, to a method and system for drawing architectural electromechanical drawings. Background Art

[0002] Architectural design is a general term for design activities that include architecture, structure, electromechanical and other disciplines. Electromechanical design drawings include design drawings for water supply and drainage, HVAC, electrical and other disciplines. Each discipline usually includes floor plans and system diagrams for each discipline. For example, the electrical discipline includes electrical system diagrams and electrical floor plans. The electrical floor plan refers to the distribution of electrical equipment and wiring on the construction surface, including the location of electrical equipment and cable direction information. The electrical system diagram is a schematic diagram that expresses the relationship between various cables and various electrical equipment (including various components in electrical equipment). The drawings of other equipment disciplines are similar to those of the electrical discipline, and are also divided into two categories: floor plans and system diagrams.

[0003] In the design drawings of equipment, there is usually an equipment legend table, which refers to a table used to explain the equipment represented by various icons in the design drawings and the various properties of the equipment, such as equipment name, power, installation method, installation height, etc. Since each design subject has different habits, each design habit corresponds to a different legend table.

[0004] In the drawing process, a point is usually set on each device icon as the reference point for inserting the icon. At the same time, some wiring points for positioning the connection are set on the outer contour of some icons. When drawing a drawing, the icons are arranged on the plane first, and then the connection is made. The endpoints of the connection fall on the nearest icon wiring point, so that the connection meets the drawing standards.

[0005] In the graphic design drawings of equipment profession, there are usually plane connecting lines between the equipment icons. These plane connecting lines may represent connecting pipes such as electrical conduits, water pipes or air ducts.

[0006] The system diagram of the equipment specialty is composed of various system components, connections and text annotations. Among them, many designers in this industry are accustomed to combining multiple system components into system sub-modules (hereinafter referred to as system modules) according to the system diagram drawing method. When drawing a system diagram, different system modules can be combined into a system diagram, which is convenient for drawing drawings.

[0007] In the existing technology, the present invention discloses a method for drawing construction drawings based on an extensible drawing model, by acquiring equipment data and user selection data; determining target model data according to the user selection data and determining drawing equipment data according to the equipment data; drawing according to the drawing equipment data and the target model data, and using the drawings obtained by drawing as construction drawings. The invention stores drawing methods of various types of construction drawings respectively through multiple preset data models. The user only needs to enter the basic data of various types of equipment for drawing construction drawings. The system can determine the equipment that needs to be generated on the user's desired construction drawings, as well as the drawing position, size, color and other information of each device through the corresponding data model and the basic data of various types of equipment, and generate construction drawings according to the drawing methods corresponding to various types of construction drawings, but can only draw two-dimensional drawings, and is not suitable for three-dimensional drawings. Summary of the invention

[0008] The present invention provides a method and system for drawing building electromechanical drawings to solve the technical defect that three-dimensional drawings cannot be automatically created at present.

[0009] In order to achieve the above invention purpose, the technical solution adopted is:

[0010] A method for drawing a building electromechanical drawing comprises the following steps:

[0011] S1: Create the user's flat icon library, flat connection library and system module library;

[0012] S2: Calling plane icons and lines from the plane icon library and plane line library, and calling system modules from the system module library;

[0013] S3: The called plane icons and lines are combined and labeled to generate a device plane diagram; the called system modules are combined and labeled to generate a system diagram.

[0014] In the above scheme, a method of fast personalized icon creation, combination and annotation is adopted to realize an automatic drawing method that meets the personalized requirements of users. At the same time, since additional attributes are added to each device icon and connection, the accuracy of the information is ensured. It can also be used for the automatic statistics function of the material list, and combined with the two-dimensional to three-dimensional mold conversion tool, the function of automatic creation of three-dimensional drawings can be realized.

[0015] Preferably, in step S1, creating a flat icon library includes the following methods: obtaining a group of icons representing different devices, and obtaining the device attribute parameters corresponding to each icon. If the icon has text annotations, the attributes and position coordinates of the icon annotation text should also be obtained; according to the graphic features and device attributes of the icons, the icon reference points, feature contour lines and connection points are obtained to form a flat icon library.

[0016] Preferably, in step S1, creating a planar wiring library comprises the following method: obtaining a group of line segments representing pipelines or cables of different devices, and obtaining features corresponding to the line segments to form a planar wiring library.

[0017] Preferably, in step S1, creating a system module library includes the following methods: obtaining a set of system basic modules drawn according to the user's system diagram habits, and obtaining the attributes and positions of different annotation texts on each system basic module; forming a system module library according to the graphic features and classifications of the system modules, or the reference points and feature contours of the system modules.

[0018] Preferably, in step S2, a group of plane icons are selected from the plane icon library, and the root icons of this group of plane icons are obtained, and the icons except the root icons are classified according to the attributes corresponding to the icons or the number of icons; wiring points and contour lines are selected from the plane connection library; and the sub-modules required for the equipment system diagram are obtained from the system module library.

[0019] Preferably, in step S3, combining into a device plan view includes the following method: connecting icons of the same type in sequence with lines starting from the root; in the connection process, combining the properties of the two icons with the connection points and contour lines, obtaining the endpoints and line types of the lines, and drawing the correct connecting lines; until all icons are connected, a device plan view is formed.

[0020] Preferably, in step S3, combining into a system diagram comprises the following methods: obtaining characteristic contour lines of submodules; and combining the system diagram modules according to design rules and characteristic contour lines to form a system diagram.

[0021] Preferably, in step S3, marking the equipment plan view includes the following method: obtaining the graphic coordinates and the marking content of the connection line, marking the connection line related information according to the position requirements of the connection line marking, and forming the equipment plan view;

[0022] The method of marking a system diagram includes the following steps: obtaining a system module marking attribute value, and marking the system diagram through the attributes and corresponding coordinates of the system module marking text to form a device system diagram.

[0023] A system for drawing building mechanical and electrical drawings uses a method for drawing building mechanical and electrical drawings, including a creation unit, a calling unit, a combination unit and a marking unit, wherein the output end of the creation unit is electrically connected to the input end of the calling unit, and the output end of the calling unit is electrically connected to the input end of the combination unit and the input end of the marking unit.

[0024] Preferably, the creation unit includes a plane icon library sub-unit, a plane connection library sub-unit and a system module library sub-unit, and the output end of the plane icon library sub-unit, the output end of the plane connection library sub-unit and the output end of the system module library sub-unit are all electrically connected to the input end of the calling unit.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention provides a method and system for drawing building mechanical and electrical drawings, which adopt a method for rapid personalized icon creation, combination and annotation, and realize an automatic drawing method that meets the personalized requirements of users. At the same time, since additional attributes are added to each device icon and connection, the accuracy of the information is ensured, and it can also be used for the automatic statistical function of the material table, and combined with the two-dimensional to three-dimensional mold conversion tool, the function of automatic creation of three-dimensional drawings can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a flow chart of the method of the present invention;

[0028] Figure 2 It is a schematic diagram of the plane icon library of the present invention;

[0029] Figure 3 It is a flowchart of reading and warehousing of the present invention;

[0030] Figure 4 It is a schematic diagram of a flat electrical circuit of the present invention;

[0031] Figure 5 Identify the characteristics of the connection in the existing drawings of the present invention and establish a connection library flow chart;

[0032] Figure 6 A preset schematic diagram for the system diagram module of the present invention;

[0033] Figure 7 It is the indoor electrical and weak current plan of the residential house of the present invention;

[0034] Figure 8 It is the system diagram of the electric box of the present invention;

[0035] Fig. 9 It is a partial view of a ventilation drawing of the present invention;

[0036] Fig.10 This is a partial diagram of a spray drawing for a water supply and drainage specialty of the present invention. DETAILED DESCRIPTION

[0037] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0038] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0039] Example 1

[0040] like Figure 1 As shown, a method for drawing a building mechanical and electrical drawing comprises the following steps:

[0041] S1: Create the user's flat icon library, flat connection library and system module library;

[0042] S2: Calling plane icons and lines from the plane icon library and plane line library, and calling system modules from the system module library;

[0043] S3: The called plane icons and lines are combined and labeled to generate a device plane diagram; the called system modules are combined and labeled to generate a system diagram.

[0044] In the above scheme, a method of fast personalized icon creation, combination and annotation is adopted to realize an automatic drawing method that meets the personalized requirements of users. At the same time, since additional attributes are added to each device icon and connection, the accuracy of the information is ensured. It can also be used for the automatic statistics function of the material list, and combined with the two-dimensional to three-dimensional mold conversion tool, the function of automatic creation of three-dimensional drawings can be realized.

[0045] Preferably, in step S1, creating a flat icon library includes the following methods: obtaining a group of icons representing different devices, and obtaining the device attribute parameters corresponding to each icon. If the icon has text annotations, the attributes and position coordinates of the icon annotation text should also be obtained; according to the graphic features and device attributes of the icons, the icon reference points, feature contour lines and connection points are obtained to form a flat icon library.

[0046] Preferably, in step S1, creating a planar wiring library comprises the following method: obtaining a group of line segments representing pipelines or cables of different devices, and obtaining features corresponding to the line segments to form a planar wiring library.

[0047] Preferably, in step S1, creating a system module library includes the following methods: obtaining a set of system basic modules drawn according to the user's system diagram habits, and obtaining the attributes and positions of different annotation texts on each system basic module; forming a system module library according to the graphic features and classifications of the system modules, or the reference points and feature contours of the system modules.

[0048] Preferably, in step S2, a group of plane icons are selected from the plane icon library, and the root icons of this group of plane icons are obtained, and the icons except the root icons are classified according to the attributes corresponding to the icons or the number of icons; wiring points and contour lines are selected from the plane connection library; and the sub-modules required for the equipment system diagram are obtained from the system module library.

[0049] Preferably, in step S3, combining into a device plan view includes the following method: connecting icons of the same type in sequence with lines starting from the root; in the connection process, combining the properties of the two icons with the connection points and contour lines, obtaining the endpoints and line types of the lines, and drawing the correct connecting lines; until all icons are connected, a device plan view is formed.

[0050] Preferably, in step S3, combining into a system diagram comprises the following methods: obtaining characteristic contour lines of submodules; and combining the system diagram modules according to design rules and characteristic contour lines to form a system diagram.

[0051] Preferably, in step S3, marking the equipment plan view includes the following method: obtaining the graphic coordinates and the marking content of the connection line, marking the connection line related information according to the position requirements of the connection line marking, and forming the equipment plan view;

[0052] The method of marking a system diagram includes the following steps: obtaining a system module marking attribute value, and marking the system diagram through the attributes and corresponding coordinates of the system module marking text to form a device system diagram.

[0053] Example 2

[0054] This embodiment discloses a creation unit, which includes:

[0055] 1) Create a flat icon library, such as Figure 2 As shown:

[0056] (1) Read the user's electrical equipment legend table, where the graphics in the first column of the electrical equipment legend table are icons, the second column is the name, the third column is the installation, the fourth column is the height, and the fifth column is the power.

[0057] (2) Read the device icons and corresponding attribute information on the device table line by line into the database, such as Figure 3 shown.

[0058] (a) Determine the contour lines of the icon features. In this case, there are round lanterns, sockets, switches, and electrical boxes. The outer contour line of the round lantern is a circle, and the outer contour lines of the sockets, switches, and electrical boxes are rectangles.

[0059] (b) Determine the icon reference point. The reference point is generally the user-defined insertion point of the block. If no block is defined, the reference point can be automatically determined based on the installation method in the icon description: if the installation method is against the wall, select the middle point of the bottom edge; if it is not against the wall, select the center point. For example, in this case, the block is not pre-defined, and the automatic definition method is used. The lantern is installed on the ceiling, so the icon reference point is the center point - the center point of the circle. The socket, switch and electrical box are installed along the wall, and the icon reference point is the midpoint of the bottom edge.

[0060] (c) Determine the icon connection point set. According to general practice, the connection points of some icons have been defined by the user in the block, so there is no need to add them in the block. If there are no connection points in the block, you need to add connection points in combination with the installation method in the icon description: If it is installed against the wall, select the middle point of each side except the bottom line; If it is not installed against the wall, then: (A) If the contour line is a circle, the connection points are the evenly distributed points of the contour line, including at least 4 quadrant point coordinates, and also include the point coordinates of the clock digital position. (B) If the contour line is a semicircle, the connection points are the evenly distributed points of the contour line, including at least 3 quadrant point coordinates, and can also be the point coordinates of the clock digital position. (C) If it is a rectangle, it is the midpoint of the four sides. (D) If it is an irregular shape, the first coordinate point is the intersection of the radial line and the contour line. In this case: the lantern is installed on the ceiling, so the icon wiring point set is the 12 points on the clock, the socket, switch and electrical box are installed along the wall, and the icon reference point is the middle point of the four sides.

[0061] (3) Read the corresponding attribute information of each row of device icons, including device name, installation method, installation height, device power and other information, extract the relevant information and correspond it to the device icon. In this case, this is achieved by adding extended data to the block. In another implementation case, this is achieved by adding a block attribute dictionary or a block attribute database.

[0062] Since the vocabulary of the header information may not correspond to the vocabulary of the target, you can add vocabulary matching functions as needed, for example: convert "name" to "equipment name"; "installation" to "installation method"; "height" to "installation height"; "power" to "equipment power". For the installation method description, "against the wall" is converted to "along the wall"; "ceiling" is converted to "ceiling", and so on.

[0063] In addition to the above method of creating a device icon library by identifying legends, there is actually another method of implementation that is similar to creating a system module library. The method is to provide a preset table in advance and let the user put the blocks or graphics into the table with a determined position.

[0064] 2) Create a flat wiring library

[0065] like Figure 4 As shown in the figure, the legend table for identifying the line type of electrical connection, where the line type of distribution line is solid line, the layer is "read-wire-pd", the line type of telephone line is dashed line, the layer is "read-wire-dh", the line type of network line is dot-dash line, the layer is "read-wire-wl",

[0066] Attached Figure 5 It is another form of implementation, which is to identify the characteristics of the connection in the user's existing drawings in the form of a user dialog box and establish a connection library.

[0067] 3) Create a system module library

[0068] like Figure 6 As shown, in this embodiment, a template table is provided in advance, and the user puts the system module diagram into a table with crosshairs, and the reference point position is set at the intersection of the crosshairs by default, which is convenient for computer reading.

[0069] Among them, the system module contains an identifier for marking text information, which facilitates importing the system text attribute value corresponding to the identifier into the position of the identifier.

[0070] Combination unit: combine plane icons and lines to generate plane diagrams, and combine system modules to generate system diagrams

[0071] (1) Figure 7 As shown, the required icons are extracted from the user icon library and arranged in the plan. When arranging the icons, the layout angle of the icons can be adjusted according to the installation method in the icon library. For example, for device icons installed against a wall, the icon insertion angle should be adjusted to be perpendicular to the wall line in combination with the building base map.

[0072] (2) Select a group of icons that need to be connected. In this case, the icon attributes indicate that the other icon is an electrical box. Therefore, the icon of the electrical box is used as the root icon, and the remaining icons are classified into three categories: lighting, sockets, and air conditioning sockets. Each category is a circuit, and the circuit numbers are N1, N2, and N3. Starting from the root icon, find the nearest adjacent icon of each category, and then find the two wiring points of the nearest path among the wiring points of the two adjacent icons to draw the connection line, thus realizing the function of automatically drawing the connection line. While connecting the lines, the power values ​​of the icons along the line are accumulated according to the icon library to generate the power data value of a certain circuit in the system diagram. The power of lighting, sockets, and air conditioning are 100W, 400W, and 800W respectively. These are the power values ​​of the three circuits. At the same time, the switch specifications and cable specifications of each circuit are obtained according to the design rules for the system diagram annotation.

[0073] (3) Generation of electrical system diagram

[0074] like Figure 8 As shown, in this case, to generate a system diagram of an electric box, first obtain the outgoing line circuit information, incoming line circuit information, electric box power information and other data required by the electric box. Among them: the power information includes the installed power (Pe), required coefficient (Kx), calculated power (Pj), calculated current (Ij), power factor (Cosφ), etc. of the electric box.

[0075] Arrange the three outgoing line modules 1, 2, and 3 in order of outgoing line number. After each outgoing line module is inserted, move down to the position of the next outgoing line module insertion point according to the height of the outline of the outgoing line system module. After all outgoing line system modules are inserted, draw a vertical line segment for the outgoing line busbar. Arrange the incoming line modules according to the middle point of the outgoing line busbar.

[0076] According to the comparison of the total height h1 of the outgoing module and the total height h2 of the incoming module, the maximum value h(max) is taken to determine the height of the outer frame line of the system diagram, and the outer frame line height = h(max) + 8500; the maximum width w1 of the outgoing module and the maximum width w2 of the incoming module are added, and w3 = w1 + w2 is the width of the outer frame line of the system diagram. Among them, the coordinates of the two vertices above the outer frame line are the highest point of the incoming and outgoing module + 5000, and the coordinates of the two vertices below the outer frame line are the highest point of the incoming and outgoing module - 3500, thereby determining the positioning of the outer frame line.

[0077] According to the coordinates of the upper left corner of the dotted line of the system frame as the reference point, place the electrical parameter module (installed power Pe, required coefficient Kx, calculated power Pj, power factor Cosx, calculated current Ij, etc.)

[0078] Where: Pe is the power of each outgoing circuit and

[0079] Kx is the required coefficient and can be set in advance

[0080] Pj (calculated power) = Pe x Kx

[0081] Cosx is the power factor, which can be preset

[0082] Ij (calculated current) = Pj / 0.66 / Cosx (three-phase) or Ij (calculated current) = Pj / 0.22 / Cosx (single-phase)

[0083] 3. Labeling unit

[0084] The obtained circuit information N1, N2, N3 is marked between the root device icon and the first device icon to obtain the electrical plan.

[0085] The power information of circuits N1, N2, and N3 obtained are 100W, 400W, and 800W respectively. According to the information of each circuit and the design rules, the circuit breakers and outgoing line specifications of the electrical box outgoing line circuits are marked. At the same time, the power of the outgoing line circuits is added together to obtain the total power of the electrical box, which is 1300W, or 1.3kW.

[0086] According to the design rules, the size of the incoming switch is determined by the total current of the outgoing lines and the size of the outgoing switch (the larger one is taken). For example, the total outgoing current is 7A, and the maximum outgoing switch is 20A. According to the design specifications, the incoming line is generally two levels larger than the outgoing line, 20→25→32, 25>18. Therefore, based on comprehensive considerations, a 32A switch is selected for the incoming switch.

[0087] According to the above data and the marked text position of the electrical parameter module in the system module, write the corresponding electrical parameter value of the electrical box.

[0088] Example 3

[0089] Attached Fig. 9 This is a partial view of a ventilation drawing. The diffuser legend in the figure is a user-defined icon. After identification, it is created into an icon library. The reference point is the middle point, the contour line is a square line, and multiple air outlets are arranged in the plan view. The connection lines between the air outlets are double lines (air ducts). According to the design rules, the interface size of the air duct is calculated, and the width is greater than the air outlet size (contour line). When designing, the air outlet is arranged first, and then when connecting the lines, the contour line of the air outlet is identified, and then the double-line diagram of the air duct is automatically drawn and the air duct size is marked according to the cross-sectional area data of the air duct.

[0090] Example 4

[0091] Attached Fig.10 This is a partial drawing of a sprinkler drawing for a water supply and drainage company. The nozzle legend in the figure is a user-defined icon. After identification, it is created into an icon library. The reference point is the middle point and the outline is a circle. Multiple nozzles are arranged in the plan view. The lines between the air outlets are water pipes. According to the design rules, the diameter of the water pipe is related to the number of nozzles it supplies water to. For example, one nozzle is DN25, two nozzles are DN32, and so on. When designing, the nozzles are arranged first, and then when connecting the lines, the number of nozzles is identified to obtain the pipe specifications, and the water pipes are automatically drawn and marked.

[0092] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for drawing building electromechanical drawings, characterized in that: The following steps are involved: S1: Create the user's flat icon library, flat connection library and system module library; In step S1, creating a planar icon library includes the following methods: obtaining a group of icons representing different devices, and obtaining the device attribute parameters corresponding to each icon. If the icon has text annotations, the attributes and position coordinates of the icon annotation text should also be obtained; according to the graphic features and device attributes of the icons, the icon reference points, feature contour lines and connection points are obtained to form a planar icon library; S2: Calling plane icons and lines from the plane icon library and plane line library, and calling system modules from the system module library; S3: The called plane icons and lines are combined and labeled to generate a device plane diagram; the called system modules are combined and labeled to generate a system diagram.

2. A method for drawing building mechanical and electrical drawings according to claim 1, characterized in that: In step S1, creating a plane connection library includes the following method: obtaining a group of line segments representing pipelines or cables of different devices, and obtaining features corresponding to the line segments to form a plane connection library.

3. A method for drawing building mechanical and electrical drawings according to claim 1, characterized in that: In step S1, creating a system module library includes the following methods: obtaining a set of system basic modules drawn according to the user's system diagram habits, and obtaining the attributes and positions of different annotation texts on each system basic module; forming a system module library according to the graphic features and classifications of the system modules, or the reference points and feature contours of the system modules.

4. A method for drawing a building electromechanical drawing according to any one of claims 1 to 3, characterized in that: In step S2, a group of plane icons are selected from the plane icon library, and the root icons of this group of plane icons are obtained, and the icons except the root icons are classified according to the attributes corresponding to the icons or the number of icons; wiring points and contour lines are selected from the plane connection library; and the sub-modules required for the equipment system diagram are obtained from the system module library.

5. A method for drawing building mechanical and electrical drawings according to claim 4, characterized in that: In step S3, the combination into a device plan view includes the following methods: connecting icons of the same type in sequence with lines starting from the root; in the connection process, combining the properties of the two icons with the connection points and contour lines, obtaining the endpoints and line types of the lines, and drawing the correct connecting lines; until all icons are connected, a device plan view is formed.

6. A method for drawing building mechanical and electrical drawings according to claim 4, characterized in that: In step S3, combining into a system diagram includes the following methods: obtaining characteristic contour lines of submodules; combining the system diagram modules according to design rules and characteristic contour lines to form a system diagram.

7. A method for drawing building mechanical and electrical drawings according to claim 4, characterized in that: In step S3, marking the equipment plan view includes the following methods: obtaining the graphic coordinates and the marking content of the connection line, marking the connection line related information according to the position requirements of the connection line marking, and forming the equipment plan view; The method of marking a system diagram includes the following steps: obtaining a system module marking attribute value, and marking the system diagram through the attributes and corresponding coordinates of the system module marking text to form a device system diagram.

8. A system for drawing mechanical and electrical drawings of buildings, using the method for drawing mechanical and electrical drawings of buildings as claimed in claim 1, characterized in that: It includes a creation unit, a calling unit, a combination unit and a labeling unit. The output end of the creation unit is electrically connected to the input end of the calling unit, and the output end of the calling unit is electrically connected to the input end of the combination unit and the input end of the labeling unit.

9. A system for drawing building mechanical and electrical drawings according to claim 8, characterized in that: The creation unit includes a plane icon library subunit, a plane connection library subunit and a system module library subunit. The output end of the plane icon library subunit, the output end of the plane connection library subunit and the output end of the system module library subunit are all electrically connected to the input end of the calling unit.

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