Generation method, device and equipment of fresh air system based on residence and storage medium

Abstract

The invention relates to the technical field of building equipment design, discloses a residence-based fresh air system generation method, device and equipment and a storage medium, and is used for improving the design efficiency of a fresh air system. The residence-based fresh air system generation method comprises the steps that house type information of a residence is acquired, wherein the house type information comprises actual room layout, house type area information, room clear height, room function distribution and resident number information; on the basis of the house type information, the fresh air volume is calculated through a ventilation frequency method and a carbon dioxide concentration method, and the larger value in calculation results is selected as the target fresh air volume; determining a starting position and a final position of the fresh air system according to the house type information; grid division is performed on the actual room layout based on the starting point position and the ending point position, and a target path is generated; and generating a target fresh air system according to the target path and the target fresh air volume.

Description

Technical Field

[0001] The present invention relates to the technical field of building equipment design, and in particular to a method, device, equipment and storage medium for generating a residential fresh air system. Background Art

[0002] The residential fresh air system is a common air treatment method, which mainly realizes indoor and outdoor air exchange through mechanical ventilation, aiming to improve the air quality and comfort of the living space while taking into account the need for energy conservation.

[0003] At present, the design of residential fresh air systems mainly relies on manual operation, supplemented by efficiency-enhancing plug-ins. For the layout of equipment in the fresh air system, calling tools are mainly used to manually determine the position. After manually determining the size of the fresh air fan, the number and positioning of the air outlets, they are connected through pipes through plug-ins or manually.

[0004] With existing technologies, the design of residential fresh air systems is highly dependent on manual operation. On the one hand, designers need to manually adjust the air vent position and pipe connections, which is not only time-consuming and labor-intensive, but also prone to connection errors. On the other hand, due to the lack of automated tool support, the design process requires repeated modification and verification, making it difficult to quickly generate the optimal solution, which seriously affects the overall design efficiency. Summary of the Invention

[0005] The present invention provides a method, device, equipment and storage medium for generating a residential fresh air system to solve the problem in the prior art of high reliance on manual operation leading to low design efficiency.

[0006] A first aspect of the present invention provides a method for generating a fresh air system based on a residence, comprising: obtaining apartment type information of the residence, the apartment type information including actual room layout, apartment area information, room net height, room function distribution and number of occupants information; based on the apartment type information, calculating the fresh air volume using the ventilation frequency method and the carbon dioxide concentration method, and selecting the larger value of the calculation results as the target fresh air volume; determining the starting point and end point of the fresh air system according to the apartment type information; gridding the actual room layout based on the starting point and end point, and generating a target path; generating a target fresh air system according to the target path and the target fresh air volume.

[0007] In a feasible implementation, the fresh air volume is calculated based on the apartment information using the ventilation frequency method and the carbon dioxide concentration method, and the larger value of the calculation results is selected as the target fresh air volume, including: calculating the living area based on the apartment area information, the living area includes the area of ​​the bedroom and the living room; calculating the first fresh air volume based on the living area using the ventilation frequency method; calculating the corresponding fresh air volume of the bedroom and the living room using the carbon dioxide concentration method and the ventilation frequency method, and adding the two to obtain the second fresh air volume; selecting the larger value of the first fresh air volume and the second fresh air volume as the target fresh air volume.

[0008] In a feasible implementation manner, the carbon dioxide concentration method and the ventilation frequency method are used to respectively calculate the corresponding fresh air volumes of the bedroom and the living room, and the two are added together to obtain the second fresh air volume, including: determining the number of residents corresponding to each bedroom based on the occupant information; based on the number of residents in each bedroom, using the carbon dioxide concentration method to calculate the required fresh air volume in each bedroom, and summing them up to obtain the total bedroom fresh air volume corresponding to the bedroom; based on the area of ​​the living room, using the ventilation frequency method to calculate the living room fresh air volume of the living room; adding the total bedroom fresh air volume and the living room fresh air volume to obtain the second fresh air volume.

[0009] In a feasible implementation, the determining of the starting and ending positions of the fresh air system according to the apartment type information includes: based on the apartment type information, according to the type of the starting room selected by the user, determining the center point of the outer contour or the center point of the maximum inscribed rectangle of the starting room to obtain the starting position of the fresh air system; and selecting the center point of the corresponding room pair as the end position based on a preset end position selection rule.

[0010] In a feasible embodiment, the center point of the corresponding room pair is selected as the end position based on the preset end position selection rule, including: obtaining a first type of room whose room name keyword contains "bedroom", and taking the midpoint of the door of the first type of room near the bedroom side as the end position; for a second type of room without a complete wall separation, obtaining the center point of the second type of room or the center point of the largest inscribed rectangle as the end position; according to the functional distribution of the rooms, taking the center point of the third type of room corresponding to the dining room, living room and study as the end position.

[0011] In a feasible implementation, the gridding of the actual layout of the room based on the starting position and the end position and the generation of the target path includes: identifying and marking all obstacles based on the actual layout of the room to obtain a preprocessed actual layout of the room; selecting a number of key points from the preprocessed actual layout of the room as graph nodes; constructing a network graph according to the graph nodes, and generating a target path based on the starting position and the end position.

[0012] In a feasible implementation manner, the target fresh air system is generated according to the target path and the target fresh air volume, including: according to the target fresh air volume, selecting a fresh air fan model that meets the air volume requirements, and determining the specific configuration parameters of the fresh air fan; selecting a suitable air duct size and material based on the target path; based on the target path and in combination with the actual layout of the room, determining the installation position of the fresh air fan, the direction and connection method of the air duct, and the layout position of the air supply and exhaust outlets; after completing the equipment selection and path planning, the selected equipment and components are systematically integrated to form the target fresh air system.

[0013] The second aspect of the present invention provides a device for generating a fresh air system based on a residence, comprising: an acquisition module for acquiring the apartment type information of the residence, the apartment type information including the actual room layout, apartment area information, room net height, room function distribution and number of residents information; a processing module for calculating the fresh air volume based on the apartment type information using the ventilation frequency method and the carbon dioxide concentration method, and selecting the larger value of the calculation results as the target fresh air volume; a determination module for determining the starting position and the end position of the fresh air system according to the apartment type information; a first generation module for gridding the actual room layout based on the starting position and the end position, and generating a target path; a second generation module for generating a target fresh air system according to the target path and the target fresh air volume.

[0014] In a feasible embodiment, the processing module includes: a first calculation unit, used to calculate the living area based on the apartment area information, and the living area includes the area of ​​the bedroom and the living room; a second calculation unit, used to calculate the first fresh air volume based on the living area using the ventilation frequency method; a third calculation unit, used to calculate the corresponding fresh air volume of the bedroom and the living room respectively using the carbon dioxide concentration method and the ventilation frequency method, and add the two to obtain the second fresh air volume; a first selection unit, used to select the result with a larger value from the first fresh air volume and the second fresh air volume as the target fresh air volume.

[0015] In a feasible embodiment, the third calculation unit is specifically used to: determine the number of residents corresponding to each bedroom based on the number of residents information; based on the number of residents in each bedroom, use the carbon dioxide concentration method to calculate the amount of fresh air required in each bedroom, and sum them up to obtain the total bedroom fresh air volume corresponding to the bedroom; based on the area of ​​the living room, use the ventilation number calculation method to calculate the living room fresh air volume of the living room; add the total bedroom fresh air volume and the living room fresh air volume to obtain the second fresh air volume.

[0016] In a feasible embodiment, the determination module includes: a determination unit, which is used to determine the center point of the outer contour or the center point of the maximum inscribed rectangle of the starting room based on the apartment information and the type of the starting room selected by the user, so as to obtain the starting position of the fresh air system; a second selection unit, which is used to select the center point of the corresponding room pair as the end position based on a preset end position selection rule.

[0017] In a feasible embodiment, the second selection unit is specifically used to: obtain a first type of room whose room name keyword contains "bedroom", and take the midpoint of the door of the first type of room near the bedroom side as the end point; for a second type of room that is not separated by a complete wall, obtain the center point of the second type of room or the center point of the largest inscribed rectangle as the end point; according to the functional distribution of the rooms, take the center point of the third type of room corresponding to the dining room, living room and study as the end point. In a feasible implementation, the first generation module is specifically used to: identify and mark all obstacles based on the actual layout of the room to obtain a preprocessed actual layout of the room; select several key points from the preprocessed actual layout of the room as graph nodes; construct a grid graph based on the graph nodes, and generate a target path based on the starting position and the end position. In a feasible embodiment, the second generation module is specifically used to: select a fresh air fan model that meets the air volume requirements according to the target fresh air volume, and determine the specific configuration parameters of the fresh air fan; select a suitable air duct size and material based on the target path; based on the target path, combined with the actual layout of the room, determine the installation position of the fresh air fan, the direction and connection method of the air duct, and the layout position of the air supply and exhaust outlets; after completing the equipment selection and path planning, the selected equipment and components are systematically integrated to form a target fresh air system.

[0018] The third aspect of the present invention provides an electronic device, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor calls the instructions in the memory so that the electronic device executes the above-mentioned method for generating a residential fresh air system.

[0019] A fourth aspect of the present invention provides a computer-readable storage medium having instructions stored therein, which, when executed on a computer, enables the computer to execute the above-mentioned method for generating a residential-based fresh air system.

[0020] In the technical solution provided by the present invention, the apartment type information of the residence is obtained, and the apartment type information includes the actual layout of the room, apartment area information, room net height, room function distribution and number of occupants; based on the apartment type information, the ventilation frequency method and the carbon dioxide concentration method are used to calculate the fresh air volume, and the larger value of the calculation results is selected as the target fresh air volume; the starting position and the end position of the fresh air system are determined according to the apartment type information; the actual layout of the room is gridded based on the starting position and the end position, and a target path is generated; a target fresh air system is generated according to the target path and the target fresh air volume. In an embodiment of the present invention, based on the apartment type information, the ventilation frequency method and the carbon dioxide concentration method are used for dual calculation and preferential determination of the target fresh air volume, ensuring accurate matching of ventilation needs, and performing grid path planning by automatically identifying building features, thereby intelligently generating a fresh air system, avoiding the empirical errors of manual design, and greatly improving the design efficiency while ensuring the scientific nature of the design, so that the fresh air system can meet actual needs and achieve optimal energy configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of an embodiment of a method for generating a residential fresh air system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of another embodiment of a method for generating a residential fresh air system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of an embodiment of a device for generating fresh air in a residential area according to an embodiment of the present invention; Figure 4 This is a schematic diagram of another embodiment of a generating device for a residential fresh air system according to an embodiment of the present invention; Figure 5 FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The embodiments of the present invention provide a method, device, equipment and storage medium for generating a residential fresh air system, which improves the efficiency of fresh air system design by quickly calculating air volume through a dual algorithm, intelligently locating starting and ending points, and automatically finding paths in a grid.

[0023] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the present invention and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that shown or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product, or apparatus.

[0024] It is understandable that the execution subject of the present invention can be a generating device based on a residential fresh air system, or a terminal or a server, which is not limited here. The embodiment of the present invention is described by taking a server as the execution subject as an example.

[0025] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 In one embodiment of the present invention, a method for generating a residential fresh air system includes: 101. Obtaining the apartment layout information of the residence, including the actual room layout, apartment area information, room height, room function distribution and number of residents; The room is fully scanned by measuring equipment such as laser rangefinders and 3D scanners to record detailed information such as the shape, size, wall position, door and window position, and furniture placement of each room, so as to obtain the actual layout of the room, apartment area information, and room net height. Among them, the apartment area information includes the overall apartment area and the area of ​​each type of room. The area of ​​each type of room includes the area of ​​the bedroom, the area of ​​the living room, the area of ​​the kitchen, the area of ​​the bathroom, etc.; in addition, by referring to the room identification and use description on the architectural design drawings, the basic functional positioning of each room is understood to obtain the functional distribution of the room; the actual living situation of each bedroom is determined through on-site inspections or direct inquiries. For example, based on the information of single bedrooms and double bedrooms, the single room is calculated as 1 person and the double room is calculated as 2 people. In one method, the area of ​​the bedroom is calculated. If the area of ​​the bedroom is greater than or equal to 9m 2 , it is considered a double bedroom. If the area of ​​the bedroom is less than 9m 2 It is considered a single bedroom for calculation of the number of occupants.

[0026] 102. Based on the apartment type information, calculate the fresh air volume using the air change frequency method and the carbon dioxide concentration method, and select the larger value of the calculated results as the target fresh air volume; Get the living area, which is the area of ​​the entire apartment minus the kitchen and bathroom areas.

[0027] Based on the living area, the first fresh air volume Q1 is calculated using the air change method. The calculation method for the first fresh air volume is:

[0028] Among them, F1 is the living area, h is the net height of the room, and n is the minimum design fresh air volume and design ventilation times (times / hour).

[0029] The ventilation times for the minimum design fresh air volume are shown in the following table:

[0030] Among them, per capita living area = living area / number of residents. Based on the number of residents information, the number of residents P can be determined, then F P =F1 / P.

[0031] The carbon dioxide concentration method is used to calculate the fresh air volume Qb for a single bedroom. The calculation formula is:

[0032] Seek the middle, It is the amount of CO2 emitted indoors, calculated based on the number of people in the room and the amount of CO2 exhaled by each person; is the indoor CO2 concentration limit, which is 0.1%. is the outdoor CO2 concentration, take 0.04%, then The amount of CO2 emitted indoors is calculated based on the number of people in the bedroom. The amount of CO2 exhaled while sleeping is 14.4 L / (h*person). Then the total fresh air volume of multiple bedrooms is .

[0033] Calculate the fresh air volume of the living room by the air change method , the calculation formula for the fresh air volume in the living room is:

[0034] Among them, F2 is the area of ​​the living room.

[0035] The second fresh air volume Q2 is calculated based on the total bedroom fresh air volume and the living room fresh air volume. The calculation formula for the second fresh air volume is:

[0036] Compare the first fresh air volume and the second fresh air volume. If the first fresh air volume is greater than the second fresh air volume, the first fresh air volume is used as the target fresh air volume. If the first fresh air volume is less than the second fresh air volume, the second fresh air volume is used as the target fresh air volume. If the first fresh air volume is equal to the second fresh air volume, the first fresh air volume or the second fresh air volume is used as the target fresh air volume.

[0037] 103. Determine the starting and ending points of the fresh air system based on the apartment type information; The starting point is typically chosen in areas such as the kitchen, secondary bathroom, or balcony, which are relatively isolated and convenient for fresh air fan installation and connection. The ending point is typically located in high-activity areas such as bedrooms and living rooms to ensure that fresh air is evenly distributed throughout the home. When determining the starting and ending points, it is important to fully consider factors such as the actual layout of the room, wall structure, and furniture placement to ensure that the fresh air system ducting is arranged reasonably, aesthetically pleasing, and does not interfere with the use of the indoor space.

[0038] 104. Gridding the actual layout of the room based on the starting position and the end position, and generating a target path; The room is divided into a series of regular or irregular grid units based on its shape, size, and wall position. These grid units not only accurately reflect the actual layout of the room, but also facilitate subsequent path planning algorithms to process. Then, an efficient path planning algorithm, such as the A* algorithm or the Dijkstra algorithm, is used to find the optimal path in the grid units, combining the starting and ending positions. This path fully considers the length of the pipe, the number of turns, and the collision and avoidance of obstacles such as walls and furniture, ensuring that the target path finally generated meets the functional requirements of the fresh air system.

[0039] Specifically, based on the two-dimensional plane contour data and three-dimensional spatial characteristics of the room, a basic grid framework is established radiating outward with the starting point as the center. The initial size of the grid unit is determined according to the average span of the room. In a conventional rectangular space, 1 meter × 1 meter is used as the base unit, and a 0.5 meter × 0.5 meter encrypted grid is used for irregular areas or narrow corridors. Then, the obtained wall and furniture point cloud data are used to project the obstacle outline onto the grid plane. The grid cells completely covered by obstacles are marked as inaccessible areas, and the access weights of partially covered grids are calculated according to the actual occupancy ratio. For example, when the obstacle occupies more than 60% of the grid area, the grid weight is set to 0.9, and when it is occupied When the ratio is lower than 30%, the weight is set to 0.3. Subsequently, a weighted directed graph is constructed based on the starting and ending positions, with the center of each grid unit as a node and the lines between adjacent grids as edges. The weight of the edge is determined by the grid traffic weight, actual distance and preset turning penalty coefficient. For example, for each additional 90-degree turn, the path cost increases by an additional 15%. Finally, an improved A* algorithm is used for path search. This algorithm adds a wind resistance coefficient factor to the heuristic function, and gives priority to the path direction with less resistance to pipeline laying. Through iterative calculation, a grid sequence from the starting point to the end point with the smallest cumulative path cost is found. This sequence constitutes the target path for laying the fresh air duct.

[0040] 105. Generate a target fresh air system based on the target path and target fresh air volume.

[0041] According to the target fresh air volume, as well as the layout and length of the target path, select the appropriate fresh air fan model and specifications to ensure that the fresh air fan can provide sufficient air volume to meet the indoor air quality requirements. Determine the size and direction of the installed fresh air duct based on the target path to ensure that the fresh air can be delivered to each room evenly and efficiently. Use joints and fittings with good sealing performance at the pipe joints to prevent air leakage. At the same time, reasonably configure the air supply and exhaust vents according to the target fresh air volume to ensure that the fresh air system can meet the fresh air needs of indoor personnel. Confirm the equipment selection and components to form the target fresh air system.

[0042] In an embodiment of the present invention, by comprehensively acquiring the apartment type information of the residence, combining the ventilation frequency method and the carbon dioxide concentration method to scientifically calculate and select the optimal target fresh air volume, the starting and end positions of the fresh air system are determined, and the room layout is gridded and the target path is generated. Finally, the target fresh air system is generated, which effectively improves the accuracy and efficiency of the fresh air system design.

[0043] See also Figure 2 Another embodiment of the method for generating a residential fresh air system according to the embodiment of the present invention includes: 201. Obtaining the apartment layout information of the residence, which includes the actual room layout, apartment area information, room height, room function distribution, and number of residents; The execution process of step 201 is similar to that of the above step 101 and will not be repeated here.

[0044] 202. Calculate the living area based on the apartment area information, where the living area includes the areas of the bedrooms and the living room; Select the area of ​​the bedrooms and the area of ​​the living room from the apartment area, add up the areas of all bedrooms and living rooms to get the living area.

[0045] 203. Based on the living area, the first fresh air volume is calculated using the air change frequency method; Based on the living area, the first fresh air volume Q1 is calculated using the air change method. The calculation method for the first fresh air volume is:

[0046] Among them, F1 is the living area, h is the net height of the room, and n is the minimum design fresh air volume and design ventilation times (times / hour).

[0047] 204. Use the carbon dioxide concentration method and the air exchange rate method to calculate the corresponding fresh air volume for the bedroom and living room respectively, and add the two to obtain the second fresh air volume; The number of residents corresponding to each bedroom is determined based on the occupant information; based on the number of residents in each bedroom, the carbon dioxide concentration method is used to calculate the required fresh air volume in each bedroom, and the sum is calculated to obtain the total bedroom fresh air volume corresponding to the bedroom; based on the area of ​​the living room, the living room fresh air volume of the living room is calculated using the ventilation number calculation method; the total bedroom fresh air volume and the living room fresh air volume are added together to obtain the second fresh air volume.

[0048] The carbon dioxide concentration method is used to calculate the fresh air volume Qb for a single bedroom. The calculation formula is:

[0049] Seek the middle, It is the amount of CO2 emitted indoors, calculated based on the number of people in the room and the amount of CO2 exhaled by each person; is the indoor CO2 concentration limit, which is 0.1%. is the outdoor CO2 concentration, take 0.04%, then The amount of CO2 emitted indoors is calculated based on the number of people in the bedroom. The amount of CO2 exhaled while sleeping is 14.4 L / (h*person). The total bedroom fresh air volume is .

[0050] Calculate the fresh air volume of the living room by the air change method , the calculation formula for the fresh air volume in the living room is:

[0051] Among them, F2 is the area of ​​the living room.

[0052] The second fresh air volume Q2 is calculated based on the total bedroom fresh air volume and the living room fresh air volume. The calculation formula for the second fresh air volume is:

[0053] 205. Select the larger value from the first fresh air volume and the second fresh air volume as the target fresh air volume; The values ​​of the two are compared through conditional judgment statements: if the value of Q1 is greater than the value of Q2, Q1 is directly judged to be a valid value and determined as the target fresh air volume; if the value of Q2 is greater than the value of Q1, Q2 is selected as the final result; when the values ​​of the two are completely equal, the default priority rule is enabled. For example, Q1 obtained based on the living area ventilation frequency method is preferentially selected as the target fresh air volume Q, and a comparison log is simultaneously generated to record the value source, timestamp and judgment basis to ensure that the entire selection process is traceable and verifiable, and finally the target fresh air volume result with value identification and calculation method traceability information is output.

[0054] 206. Based on the apartment type information and the type of the starting room selected by the user, determine the center point of the outer contour or the center point of the largest inscribed rectangle of the starting room to obtain the starting position of the fresh air system; Modeling is performed based on the outer contours and internal structural characteristics of different room types. For example, if the user selects a room with a regular shape and no complex protruding structures as the starting point, such as a relatively square living room, the center point of its outer contour is calculated using a geometric algorithm. This center point can be calculated using the coordinates of the room's four vertices using the coordinate average formula. Using this as the starting point ensures that the fresh air system has good balance and coverage in the subsequent layout. If the starting room has an irregular protrusion, such as a bedroom with a bay window, the center point of the maximum inscribed rectangle is used as the starting point. The convex hull algorithm can be used to determine the maximum inscribed rectangle of the room, and then the coordinates of its center point are calculated. At the same time, considering the impact of fixed facilities in the room, such as large wardrobes and built-in furniture, on airflow organization, when determining the center point position, appropriate offset adjustments need to be made based on the layout of these facilities to avoid conflicts between the fresh air system ducts and facilities, ensuring the rationality and practicality of the fresh air system starting point position.

[0055] 207. Selecting the center point of the corresponding room pair as the end position based on a preset end position selection rule; Get the first type of room whose room name keyword contains "bedroom", and use the midpoint of the door of the first type of room near the bedroom side as the end point; for the second type of room without complete wall separation, get the center point of the second type of room or the center point of the largest inscribed rectangle as the end point; according to the functional distribution of the rooms, use the center point of the third type of room corresponding to the dining room, living room and study as the end point.

[0056] Using the room door location data from the apartment layout and the bedroom's spatial layout, spatial geometry analysis methods are used to determine the line segment on the bedroom side of the door, and then the midpoint coordinates of this line segment are calculated. This rule is designed to ensure that the bedroom, as the primary living space, can effectively deliver fresh air to areas with frequent human activity. For the second type of rooms without complete wall separations, such as open-plan study rooms or leisure areas connected to the living room, the center point or the center point of the largest inscribed rectangle of the room is obtained as the end point. Image processing technology is used to identify and segment the room area. The center point is determined by calculating the distribution of the room's pixels, or the convex hull algorithm is used to determine the largest inscribed rectangle and then calculate the center point. For the third type of rooms, including dining rooms, living rooms, and study rooms, their center points are used as the end points based on the functional distribution of the rooms.

[0057] 208. Gridding the actual layout of the room based on the starting position and the end position, and generating a target path; Based on the actual layout of the room, all obstacles are identified and marked to obtain the preprocessed actual layout of the room; several key points are selected from the preprocessed actual layout of the room as graph nodes; a grid graph is constructed based on the graph nodes, and a target path is generated based on the starting and ending positions.

[0058] The actual room layout is input into a convolutional neural network model trained with a large amount of indoor scene obstacle data. The model identifies and labels various obstacles such as walls, furniture, and electrical appliances through feature extraction and classification. Based on the obstacle labels, a corresponding three-dimensional contour model is constructed in three-dimensional space using a geometric modeling algorithm. At the same time, the obstacle areas are marked with different colors or graphics on the two-dimensional color image to complete the identification and labeling of all obstacles. Finally, the actual room layout containing obstacle location, shape, and category information is obtained after preprocessing.

[0059] A corner detection algorithm combined with a region segmentation strategy is used to extract features from the room wall contours, obstacle edge turning points, and door and window opening edges. For the wall contours, corner points are uniformly sampled and selected at regular intervals. For obstacles such as large furniture, their geometric center points, edge protrusions, and contact points with the wall or other obstacles are extracted as key points. For door and window positions, their four corners and center points are selected. A spatial clustering algorithm is used to remove redundant or too close points to ensure that the key points are reasonably distributed and can fully reflect the room structure and obstacle distribution. The Delaunay triangulation algorithm is used to generate the initial grid structure with the selected graph nodes as vertices. This algorithm can automatically avoid the generation of narrow triangles and ensure the quality of the grid. According to the obstacle information, the edges in the grid that intersect with or are too close to obstacles are cropped, adjusted or deleted to form a feasible grid graph that conforms to the actual layout of the room. The starting and ending positions are mapped to the grid graph vertices. The A* algorithm is used for path search. The sum of the actual distance between two points and the heuristic distance is used as the cost function. The grid cells where obstacles are located are avoided in real time during the search process. Finally, the shortest or approximately shortest target path from the starting point to the end point that bypasses all obstacles is obtained.

[0060] Furthermore, the constructed grid diagram can be converted a second time so that the direction of the grid lines is consistent with the direction of the perpendicular walls in the room. That is, if there are multiple groups of vertical walls with different directions, the number of vertical walls in each direction is counted, and the one with the largest number of vertical walls in the same direction is selected as the pipeline direction; if the number is consistent, any direction is selected and the distribution of the grid lines is adjusted according to the direction to complete the secondary conversion of the grid lines.

[0061] 209. Generate a target fresh air system based on the target path and target fresh air volume.

[0062] According to the target fresh air volume, select the fresh air fan model that meets the air volume requirements and determine the specific configuration parameters of the fresh air fan; select the appropriate air duct size and material based on the target path; based on the target path and combined with the actual layout of the room, determine the installation location of the fresh air fan, the direction and connection method of the air duct, and the layout of the air supply and exhaust outlets; after completing the equipment selection and path planning, the selected equipment and components are systematically integrated to form the target fresh air system.

[0063] Compare the target fresh air volume Q with the rated air volume range (Qmin~Qmax) of each fresh air fan model in the database. If the target fresh air volume Q falls within the air volume range of the first fresh air fan model, the first fresh air fan model is directly selected; if the target fresh air volume Q exceeds the range of all models, calculate the minimum air volume difference of each model, and select the second fresh air fan model with the smallest difference; if the target fresh air volume Q meets the interval conditions of multiple models at the same time, further compare the operating power of each model under the Q value condition, and select the third fresh air fan model with the best energy efficiency.

[0064] The layout design for the heat exchange fresh air system utilizes specific placement logic for different functional rooms. For the kitchen, the kitchen wall is used as a key factor. By identifying the room names on either side of this wall, the walls corresponding to rooms containing keywords such as "dining," "living room," and "study" are precisely located. These walls are then positioned perpendicular to the air duct leading from the supply air connector. The heat exchanger is then strategically placed at this location to ensure efficient ventilation and energy recovery for the kitchen and associated areas. In the bathroom, duct connectors are extracted from the "M-Heat Exchanger - Two-Way" device, and those classified as supply air are selected. Since there are two such connectors, one of them is randomly selected as the "supply air" outlet, with the flat surface of the outlet facing the bathroom door during installation. For the balcony, the same installation rule applies: duct connectors are extracted from the "M-Heat Exchanger - Two-Way" device, and those classified as supply air are selected. One of these is randomly designated as the "supply air" outlet, ensuring that the duct outlet remains parallel to the balcony wall. In addition, the determination of the balcony wall needs to be clarified based on the apartment information, that is, both sides of the wall belong to the room area, and one room name contains the "balcony" keyword, and the other room name contains any one of the keywords "study", "living room", "dining room" and "bedroom". In this way, the position of the balcony wall can be accurately defined, providing a basis for the reasonable layout of the full heat exchange fresh air system, thereby building a full heat exchange fresh air system that is suitable for the functions and spatial characteristics of each room.

[0065] The layout design of the unidirectional positive-pressure fresh air system utilizes specific layout logic for rooms with different functions. In the kitchen area, the kitchen wall is used as the judgment benchmark. The room names on both sides of the wall are analyzed, and walls containing keywords such as "dining room," "living room," and "study room" are screened out. This wall is determined to be perpendicular to the air duct leading out of the supply air connector, and a positive-pressure fresh air fan is strategically placed there to ensure effective ventilation of the kitchen and related areas. In the bathroom scenario, duct connectors are extracted from the "M-Full Heat Exchanger - Bidirectional" device, and those classified as supply air are obtained. Since there are two such connectors, one of them can be randomly selected as the "supply air" outlet. For the balcony, duct connectors are also obtained from the "M-Full Heat Exchanger - Bidirectional" device, and those classified as supply air are screened out. One of them is randomly designated as the "supply air" outlet, and the outlet direction of the air duct is ensured to remain parallel to the balcony wall, thereby constructing a unidirectional positive-pressure fresh air system that adapts to the characteristics of each room.

[0066] The placement of air outlets for both the full heat exchange and unidirectional fresh air systems is clearly defined for different functional rooms. Bedrooms utilize a specific family of side air outlets, positioned at the end of the ductwork to ensure effective air supply throughout the bedroom. The living and dining areas utilize a specific family of top air outlets, also installed at the end of the ductwork. This top-of-house air supply ensures uniform air circulation and efficient ventilation throughout the living and dining areas, meeting the differentiated ventilation requirements of different functional areas.

[0067] The fixed size of the air supply duct is determined according to the new air fan model, and a preliminary air duct system is generated. Subsequently, the air duct diameter is accurately refined according to the hydraulic calculation results. Since the hydraulic calculation has been completed in advance and the corresponding model has been selected, the required pipe diameter data can be directly obtained to ensure that the air duct size meets the actual operating requirements.

[0068] For the air duct layout of the full heat exchange fresh air system: the kitchen air duct layout needs to be combined with the fresh air fan position and air supply direction; after the position of the fresh air fan supply duct is determined, the position of the No. 1 air outlet duct can be determined first, and the No. 2 air duct extends in the same direction as the No. 1 air duct, and the exhaust duct is led out to the kitchen outer wall to complete the No. 2 air duct layout. The No. 3 air duct layout is the same as the No. 2 air duct, and it is also led out to the kitchen outer wall to terminate. After the No. 4 air duct is arranged, it is necessary to measure the distance between it and the No. 3 air duct. If the distance is greater than 1000mm, no adjustment is required; if the distance is less than or equal to 1000mm, the center line of the exhaust duct is offset and adjusted to make the size spacing reach 1000mm, and then the No. 4 air outlet connection is completed according to the rule of starting from the end point of the wall, connecting the elbow after the air duct is 100cm out of the wall, and finally connecting to the fresh air fan outlet. For the secondary bathroom duct layout, once the location of duct No. 1 is known, duct No. 2 is placed according to the same rules as for the kitchen. Ducts No. 3 and 4 are placed according to a specific layout, requiring the end point of the bathroom duct to be equidistant from the centerline of the fresh air fan. If there is insufficient space to complete the duct layout, the system will report an error message stating that "the secondary bathroom does not have enough space on the exterior wall for the fresh air fan." For the balcony duct layout, once the direction of the balcony fresh air fan is determined and the position of supply duct No. 1 is clear, subsequent ducts are arranged based on duct No. 1. Duct No. 2 is led out from the exhaust duct fittings and offset 500mm to either side of the supply duct centerline to determine the exhaust duct end point. When connecting the end point and the duct connector, a collision check is performed. If there is a collision between the exhaust duct and the supply duct, the layout plan is discarded.

[0069] Duct layout for a one-way fresh air system: For kitchen duct layout, obtain information on the four walls of the kitchen and identify walls with only one kitchen on one side and an exterior facade (or open balcony / porch) on the other. If the duct outlet can pass through such a wall, the duct is generated directly. If not, the duct is routed from the fresh air blower. When the outlet reaches 500mm, an elbow is added and connected to any point on the wall to ensure that the duct completely passes through the wall. For secondary bathroom duct layout: Filter the four walls of the secondary bathroom and identify walls with only one bathroom on one side and an exterior facade (or open balcony) on the other. Based on whether the duct outlet can pass through such a wall, a similar approach is adopted as for the kitchen. If it can pass through, the duct is generated directly. If not, an elbow is added 500mm from the fresh air blower and connected to any point on the wall to ensure that the duct passes through the wall. As for the air duct layout of the balcony, the air supply duct outlet method of the balcony one-way flow fresh air system is similar to that of the bathroom, but there are specific requirements, that is, the air duct can only be discharged along the direction of the air duct connector and cannot be arranged in the opposite direction, so as to ensure the rationality and effectiveness of the air duct layout.

[0070] In the embodiment of the present invention, by obtaining multi-dimensional information of residential household types, the ventilation frequency method, the carbon dioxide concentration method and the ventilation frequency method are combined to accurately calculate the fresh air volume from different dimensions and take the larger value to determine the target fresh air volume, so as to ensure that the fresh air supply is scientific and reasonable. At the same time, combined with user needs and preset rules, the starting and end positions of the fresh air system are flexibly determined to fit the actual usage scenario. The room layout is intelligently grid-divided according to the starting and end points to generate a target path, and finally a target fresh air system with high adaptability is generated, which greatly improves the accuracy and scientificity of the fresh air system design, while optimizing the design process, reducing the design complexity, and significantly improving the design efficiency.

[0071] The above describes the method for generating a fresh air system based on a residence in an embodiment of the present invention. The following describes the device for generating a fresh air system based on a residence in an embodiment of the present invention. Figure 3 In one embodiment of the present invention, a device for generating a fresh air system for a residential building includes: Acquisition module 301 is used to obtain the apartment type information of the residence, which includes the actual layout of the rooms, the area of ​​the apartment, the net height of the rooms, the functional distribution of the rooms, and the number of residents; Processing module 302 is used to calculate the fresh air volume based on the apartment type information using the air change frequency method and the carbon dioxide concentration method, and select the larger value of the calculated results as the target fresh air volume; Determination module 303, for determining the starting position and the ending position of the fresh air system according to the apartment type information; The first generation module 304 is used to grid the actual layout of the room based on the starting position and the end position, and generate a target path; The second generating module 305 is configured to generate a target fresh air system according to the target path and the target fresh air volume.

[0072] In an embodiment of the present invention, by comprehensively acquiring the apartment type information of the residence, combining the ventilation frequency method and the carbon dioxide concentration method to scientifically calculate and select the optimal target fresh air volume, the starting and end positions of the fresh air system are determined, and the room layout is gridded and the target path is generated. Finally, the target fresh air system is generated, which effectively improves the accuracy and efficiency of the fresh air system design.

[0073] See also Figure 4 Another embodiment of the device for generating a fresh air system for a residence according to the embodiment of the present invention includes: Acquisition module 301 is used to obtain the apartment type information of the residence, which includes the actual layout of the rooms, the area of ​​the apartment, the net height of the rooms, the functional distribution of the rooms, and the number of residents; Processing module 302 is used to calculate the fresh air volume based on the apartment type information using the air change frequency method and the carbon dioxide concentration method, and select the larger value of the calculated results as the target fresh air volume; Determination module 303, for determining the starting position and the ending position of the fresh air system according to the apartment type information; The first generation module 304 is used to grid the actual layout of the room based on the starting position and the end position, and generate a target path; The second generating module 305 is configured to generate a target fresh air system according to the target path and the target fresh air volume.

[0074] Optionally, the processing module 302 further includes: A first calculation unit 3021 is configured to calculate the living area based on the apartment area information, where the living area includes the areas of the bedroom and the living room; The second calculation unit 3022 is configured to calculate a first fresh air volume based on the living area using a ventilation frequency method; The third calculation unit 3023 is used to calculate the fresh air volume corresponding to the bedroom and the living room respectively using the carbon dioxide concentration method and the air exchange rate method, and add the two to obtain a second fresh air volume; The first selection unit 3024 is used to select the result with the larger value from the first fresh air volume and the second fresh air volume as the target fresh air volume.

[0075] Optionally, the third calculation unit 3023 may be specifically configured to: The number of residents corresponding to each bedroom is determined based on the occupant information; based on the number of residents in each bedroom, the carbon dioxide concentration method is used to calculate the required fresh air volume in each bedroom, and the sum is calculated to obtain the total bedroom fresh air volume corresponding to the bedroom; based on the area of ​​the living room, the living room fresh air volume of the living room is calculated using the ventilation number calculation method; the total bedroom fresh air volume and the living room fresh air volume are added together to obtain the second fresh air volume.

[0076] Optionally, the determining module 303 includes: A determination unit 3031 is configured to determine the center point of the outer contour or the center point of the largest inscribed rectangle of the starting room based on the apartment type information and the type of the starting room selected by the user, thereby obtaining the starting position of the fresh air system; The second selection unit 3032 is configured to select the center point of the corresponding room pair as the end point based on a preset end point position selection rule.

[0077] Optionally, the second selection unit 3032 may be specifically configured to: Get the first type of room whose room name keyword contains "bedroom", and use the midpoint of the door of the first type of room near the bedroom side as the end point; for the second type of room without complete wall separation, get the center point of the second type of room or the center point of the largest inscribed rectangle as the end point; according to the functional distribution of the rooms, use the center point of the third type of room corresponding to the dining room, living room and study as the end point. Optionally, the first generating module may be specifically configured to: Based on the actual layout of the room, all obstacles are identified and marked to obtain the preprocessed actual layout of the room; several key points are selected from the preprocessed actual layout of the room as graph nodes; a grid graph is constructed based on the graph nodes, and a target path is generated based on the starting and ending positions. Optionally, the second generation module may be specifically configured to: According to the target fresh air volume, select the fresh air fan model that meets the air volume requirements and determine the specific configuration parameters of the fresh air fan; select the appropriate air duct size and material based on the target path; based on the target path and combined with the actual layout of the room, determine the installation location of the fresh air fan, the direction and connection method of the air duct, and the layout of the air supply and exhaust outlets; after completing the equipment selection and path planning, the selected equipment and components are systematically integrated to form the target fresh air system.

[0078] In the embodiment of the present invention, by obtaining multi-dimensional information of residential household types, the ventilation frequency method, the carbon dioxide concentration method and the ventilation frequency method are combined to accurately calculate the fresh air volume from different dimensions and take the larger value to determine the target fresh air volume, so as to ensure that the fresh air supply is scientific and reasonable. At the same time, combined with user needs and preset rules, the starting and end positions of the fresh air system are flexibly determined to fit the actual usage scenario. The room layout is intelligently grid-divided according to the starting and end points to generate a target path, and finally a target fresh air system with high adaptability is generated, which greatly improves the accuracy and scientificity of the fresh air system design, while optimizing the design process, reducing the design complexity, and significantly improving the design efficiency.

[0079] above Figure 3 and Figure 4 The generation device of the residential fresh air system in the embodiment of the present invention is described in detail from the perspective of modular functional entities. The electronic device in the embodiment of the present invention is described in detail from the perspective of hardware processing.

[0080] See also Figure 5 As shown, the electronic device includes a processor 500 and a memory 501. The memory 501 stores machine-executable instructions that can be executed by the processor 500. The processor 500 executes the machine-executable instructions to implement the above-mentioned method for generating a residential fresh air system.

[0081] Further, Figure 5 The electronic device shown further includes a bus 502 and a communication interface 503 , and the processor 500 , the communication interface 503 and the memory 501 are connected via the bus 502 .

[0082] The memory 501 may include a high-speed random access memory (RAM) and may also include a non-volatile memory (non-volatile memory), for example, at least one disk storage. The communication connection between the system network element and at least one other network element is achieved through at least one communication interface 503 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus 502 may be an ISA bus, a PCI bus, or an EISA bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0083] The processor 500 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits or software instructions in the processor 500. The processor 500 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present disclosure. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present disclosure may be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory 501 , and the processor 500 reads the information in the memory 501 and completes the method steps of the aforementioned embodiment in combination with its hardware.

[0084] The present invention also provides an electronic device, wherein the computer device includes a memory and a processor, wherein the memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the processor executes the steps of the method for generating a residential fresh air system in the above-mentioned embodiments.

[0085] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. The computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the steps of the method for generating a residential-based fresh air system.

[0086] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0087] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0088] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for generating a fresh air system based on a residence, characterized in that: The method for generating a residential fresh air system includes: Obtaining the apartment layout information of the residence, including the actual room layout, apartment area information, room height, room function distribution and number of residents; Based on the apartment information, the fresh air volume is calculated using the air change frequency method and the carbon dioxide concentration method, and the larger value of the calculated results is selected as the target fresh air volume; Determine the starting point and end point of the fresh air system according to the apartment type information; Gridding the actual layout of the room based on the starting position and the end position, and generating a target path; A target fresh air system is generated according to the target path and the target fresh air volume.

2. The method for generating a residential fresh air system according to claim 1, characterized in that: The method of calculating the fresh air volume based on the apartment type information by using the ventilation frequency method and the carbon dioxide concentration method, and selecting the larger value of the calculation results as the target fresh air volume, includes: Calculating the living area based on the apartment area information, where the living area includes the areas of the bedroom and the living room; Based on the living area, a first fresh air volume is calculated using an air change frequency method; Calculating the corresponding fresh air volume of the bedroom and the living room respectively using the carbon dioxide concentration method and the air change frequency method, and adding the two to obtain a second fresh air volume; The larger value between the first fresh air volume and the second fresh air volume is selected as the target fresh air volume.

3. The method for generating a residential fresh air system according to claim 2, characterized in that: The method of using the carbon dioxide concentration method and the air exchange rate method to calculate the fresh air volume corresponding to the bedroom and the living room respectively, and adding the two to obtain the second fresh air volume, includes: Determine the number of occupants corresponding to each bedroom based on the occupant number information; Based on the number of people living in each bedroom, the required fresh air volume in each bedroom is calculated using the carbon dioxide concentration method, and the sum is calculated to obtain the total bedroom fresh air volume corresponding to the bedroom; Calculating the fresh air volume of the living room by using a ventilation rate calculation method based on the area of ​​the living room; The total bedroom fresh air volume and the living room fresh air volume are added together to obtain a second fresh air volume.

4. The method for generating a residential fresh air system according to claim 1, characterized in that: Determining the starting point and the ending point of the fresh air system according to the apartment type information includes: Based on the apartment type information and the type of the starting room selected by the user, the center point of the outer contour or the center point of the largest inscribed rectangle of the starting room is determined to obtain the starting position of the fresh air system; The center point of the corresponding room pair is selected as the end point location based on the preset end point location selection rule.

5. The method for generating a residential fresh air system according to claim 4, characterized in that: The step of selecting the center point of the corresponding room pair as the end point based on a preset end point selection rule includes: Get the first type of room whose name contains the keyword "Bedroom" and use the midpoint of the bedroom side of the door of the first type of room as the end point; For a second type of room that is not separated by a complete wall, obtaining the center point of the second type of room or the center point of the largest inscribed rectangle as the end point; According to the functional distribution of the rooms, the center points of the third type of rooms corresponding to the dining room, living room and study are used as the end points.

6. The method for generating a residential fresh air system according to claim 1, characterized in that: The gridding of the actual layout of the room based on the starting position and the end position and generating a target path includes: Based on the actual layout of the room, identifying and marking all obstacles to obtain a pre-processed actual layout of the room; Select several key points from the actual layout of the pre-processed room as graph nodes; A grid graph is constructed according to the graph nodes, and a target path is generated based on the starting position and the ending position.

7. The method for generating a residential fresh air system according to claim 1, characterized in that: The target fresh air system is generated according to the target path and the target fresh air volume, comprising: According to the target fresh air volume, select a fresh air fan model that meets the air volume requirement and determine the specific configuration parameters of the fresh air fan; Select appropriate duct size and material based on the target path; Based on the target path and the actual room layout, determine the installation location of the fresh air fan, the direction and connection method of the air duct, and the layout of the air supply and exhaust vents; After completing equipment selection and path planning, the selected equipment and components will be systematically integrated to form the target fresh air system.

8. A device for generating fresh air system based on a residence, characterized in that: The generating device of the residential fresh air system includes: An acquisition module is used to obtain the apartment type information of the residence, wherein the apartment type information includes the actual layout of the rooms, the apartment area information, the room height, the room function distribution and the number of residents; a processing module for calculating the fresh air volume based on the apartment type information by using an air change frequency method and a carbon dioxide concentration method, and selecting the larger value of the calculated results as the target fresh air volume; A determination module, configured to determine a starting point and an end point of a fresh air system according to the apartment type information; A first generation module is used to grid the actual layout of the room based on the starting position and the end position, and generate a target path; The second generating module is used to generate a target fresh air system according to the target path and the target fresh air volume.

9. An electronic device, characterized in that: The electronic device comprises: a memory and at least one processor, wherein instructions are stored in the memory; The at least one processor calls the instructions in the memory to enable the electronic device to execute the method for generating a residential fresh air system according to any one of claims 1 to 7.

10. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by the processor, the method for generating a residential fresh air system according to any one of claims 1 to 7 is implemented.

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