A BIM-based lighting design method, device and electronic equipment

Abstract

The application discloses a BIM-based lighting design method and device and electronic equipment, and the method comprises the following steps: acquiring attribute information of a room component in a building information model; determining lighting demand information of the room component according to the attribute information; determining layout design information of lamps in the room component according to the lighting demand information; and laying out the lamps in the room component based on the layout design information, so as to automatically generate the layout of the lamps in each room in the building information model, realize automatic design of a lighting scheme in the lighting field, reduce the dependence on the operation of professional personnel, and thus improve the efficiency of designing the lighting scheme and the accuracy of designing the lighting scheme.

Description

Technical Field

[0001] This invention relates to the field of data processing technology, and in particular to a BIM-based lighting design method, apparatus, and electronic device. Background Technology

[0002] Building Information Modeling (BIM) is a platform that integrates building information throughout the entire building lifecycle. The integrated information includes data from various fields such as architecture, structure, water supply and drainage, HVAC, and lighting, and is used to provide data support for the design, construction, and operation and maintenance phases of any building object.

[0003] Currently, the design of lighting solutions in the lighting field relies on the operation of professionals, which results in problems of low efficiency and low accuracy. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a BIM-based lighting design method, device, and electronic device.

[0005] In a first aspect, embodiments of the present invention provide a BIM-based lighting design method, the method comprising: Obtain the attribute information of room components in the building information model; Based on the attribute information, determine the lighting requirements of the room components; Based on the lighting requirements information, determine the layout design information of the luminaires in the room components, and then arrange the luminaires in the room components based on the layout design information.

[0006] In one possible implementation of the first aspect above, the attribute information includes functional attribute information and room size information; the lighting requirement information includes desired illuminance information and desired number of luminaires; and determining the lighting requirement information of the room components based on the attribute information includes: Based on the functional attribute information, determine the expected illuminance information of the room components; Based on the desired illuminance information and the attribute information, the desired number of light fixtures for the room components is determined.

[0007] In one possible implementation of the first aspect above, before determining the desired number of luminaires for the room component based on the desired illuminance information and the attribute information, the method further includes: Determine the size range of the room components in the building information model, and determine the range of the number of lighting fixtures; Determine the average illuminance information of different numbers of lamps within the specified number range in test rooms of different sizes within the specified size range; A mapping relationship is established between the average illuminance information and the size of the test room and the number of the lamps to obtain an illuminance mapping table. The step of determining the desired number of lamps for the room components based on the desired illuminance information and the attribute information is then performed based on the illuminance mapping table. The illuminance mapping table includes the average illuminance information of lamps with different numbers of lamps in the test room of different sizes.

[0008] In one possible implementation of the first aspect above, determining the desired number of luminaires for the room component based on the desired illuminance information and the attribute information includes: Based on the attribute information of the room components, determine the upper limit of the power density of the room components; The desired number of luminaires for the room component is obtained by determining the number of luminaires that meet the desired illuminance information and the upper limit of power density from the illuminance mapping table.

[0009] In one possible implementation of the first aspect above, determining the layout design information of the lighting fixtures in the room components according to the lighting requirement information includes: The maximum spacing between the lamps in the room components is determined based on the maximum distance-to-height ratio of the lamps. Based on the maximum spacing, the size information of the room components, and the expected number of light fixtures in the room components, the layout design information of the light fixtures in the room components is determined.

[0010] In one possible implementation of the first aspect described above, the method further includes: Identify the avoidance objects within the room components from the building information model; In the event of a collision risk between the light fixture and the object to be avoided, the offset of the light fixture is determined based on the position information of the object to be avoided and the position information of the light fixture, and the layout design information of the light fixture in the room components is adjusted based on the offset.

[0011] In one possible implementation of the first aspect above, the layout design information includes the arrangement information of the luminaires within the room components and the design information of the electrical circuits associated with the luminaires.

[0012] Secondly, embodiments of the present invention provide a BIM-based lighting design device, the device comprising: The acquisition module is used to acquire attribute information of room components in the building information model; The determining module is used to determine the lighting requirements of the room components based on the attribute information; The design module is used to determine the layout design information of the lamps in the room components according to the lighting requirements information, so as to lay out the lamps in the room components based on the layout design information.

[0013] Thirdly, embodiments of the present invention provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the BIM-based lighting design method as described above.

[0014] Fourthly, embodiments of the present invention provide a computer program product, which stores a computer program that, when executed by a processor, implements the BIM-based lighting design method as described above.

[0015] This invention is achieved through the following technical solution: In this embodiment of the invention, by acquiring the attribute information of room components in the building information model, the lighting requirements of the room components are determined based on the attribute information, and the layout design information of the lamps in the room components is determined according to the lighting requirements information. Based on the layout design information, the lamps are laid out in the room components, thereby automatically generating the layout of the lamps in each room in the building information model. This realizes the automatic design of lighting schemes in the lighting field, reduces the reliance on professional personnel, and thus improves the efficiency and accuracy of lighting scheme design. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the steps of a BIM-based lighting design method according to an embodiment of the present invention. Figure 2 This is a flowchart of another BIM-based lighting design method provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a BIM-based lighting design device according to an embodiment of the present invention; Figure 4 This is a structural block diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0017] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0019] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, "a plurality of sets" means two or more sets, "a plurality of pieces" means two or more pieces, and "a number" means one or more, unless otherwise explicitly specified.

[0021] Building Information Modeling (BIM) is a platform that integrates building information throughout the entire building lifecycle. The integrated information includes data from various fields such as architecture, structure, water supply and drainage, HVAC, and lighting, and is used to provide data support for the design, construction, and operation and maintenance phases of any building object.

[0022] Currently, the design of lighting solutions in the lighting field relies on the operation of professionals, which results in problems of low efficiency and low accuracy.

[0023] Based on this, the present invention discloses a BIM-based lighting design method, device, and electronic device. By acquiring the attribute information of room components in the building information model, the lighting requirements of the room components are determined based on the attribute information. According to the lighting requirements, the layout design information of the lamps in the room components is determined. Based on the layout design information, the lamps are laid out in the room components, thereby automatically generating the layout of the lamps in each room in the building information model. This realizes the automatic design of lighting schemes in the lighting field, reduces the reliance on professional personnel, and thus improves the efficiency and accuracy of lighting scheme design.

[0024] See Figure 1 , Figure 1 The diagram illustrates a flowchart of a BIM-based lighting design method according to an embodiment of the present invention, which may specifically include the following steps: S101, Obtain the attribute information of room components in the building information model.

[0025] Building Information Modeling (BIM) can be a model that integrates architectural and structural domains within any engineering project. An engineering project can be a project constructing buildings and their ancillary facilities, such as rail transit stations, residential buildings, or office buildings. Room components can be components integrated from multiple parts to represent rooms within a building; specifically, they can be integrated from structural column components, structural wall components, door components, etc., with different rooms composed of different room components. Attribute information describes the properties of room components, specifically including functional attribute information, room size information, and room component identification information. Functional attribute information describes the functional type of a room component, referring to its intended use, such as for power supply, heating, or water supply and drainage. Room components for power supply can include low-voltage distribution rooms, electrical control rooms, and emergency power supply rooms; room components for heating can include ventilation fan rooms, smoke exhaust fan rooms, and refrigeration machine rooms; room components for water supply and drainage can include fire pump rooms and wastewater pump rooms. There are also room components with other intended uses, such as vehicle control rooms, personnel duty rooms, and emergency evacuation routes in rail transit projects.

[0026] In the process of building a building information model, when it is necessary to design a lighting scheme in the lighting field of the building information model, the attribute information of each room component in the building information model can be obtained.

[0027] Because the construction of a building information model is carried out sequentially, that is, the building information model includes components from fields such as architecture, structure, water supply and drainage, HVAC, and lighting, and the components of each field are constructed in a certain order.

[0028] Typically, it is necessary to first construct components in the architectural and structural domains. After obtaining a model that integrates the architectural and structural domains, components in the water supply and drainage, HVAC, and lighting domains can be constructed simultaneously. When it is necessary to design a lighting scheme in the lighting domain of the building information model, the building information model is a model that has already integrated the architectural and structural domains. The components in the architectural and structural domains include room components, so the attribute information of each room component can be read from the building information model that has already integrated the architectural and structural domains.

[0029] S102, Based on the attribute information, determine the lighting requirements of the room components.

[0030] The lighting requirement information can be the lighting information for room components, and different functional types of room components have different lighting requirement information. The lighting requirement information can include desired illuminance information and desired number of luminaires. Expected illuminance information is the illuminance required by the room component, and the desired number of luminaires is the number of luminaires needed to achieve the desired illuminance of the room component.

[0031] After obtaining the attribute information of the room components, the lighting requirements of the room components can be determined based on the attribute information.

[0032] In practical applications, for each room component, the required illuminance of the room component can be evaluated based on the room size information and functional attribute information of the room component, so as to obtain the expected illuminance information of the room component, and to determine the number of lamps required to achieve the expected illuminance information in the room component, so as to obtain the expected number of lamps of the room component, thereby obtaining the lighting requirement information of each room component.

[0033] S103, Based on the lighting requirements information, determine the layout design information of the luminaires in the room components, and arrange the luminaires in the room components based on the layout design information.

[0034] The layout design information includes the arrangement of lighting fixtures within room components, specifically the location of each fixture within the components. This information also includes the arrangement of the lighting fixtures within the room components and the design information of the electrical circuits associated with them. The electrical circuits are used to control the operation of the lighting fixtures, and their design information includes the arrangement of these circuits within the room components, specifically the location of each electrical component within the circuits.

[0035] After obtaining the lighting requirements information of the room components, the layout design information of the light fixtures in the room components can be determined according to the lighting requirements information.

[0036] In practical applications, the desired number of luminaires and the desired illuminance information can be used to determine the layout of the luminaires within the room components. If the arranged luminaires can provide the illuminance required to meet the desired illuminance, then this layout information can be considered the luminaire layout design information for the room components. If the arranged luminaires cannot provide the illuminance required to meet the desired illuminance, the layout of the desired number of luminaires within the room components is adjusted until the arranged luminaires can provide the illuminance required to meet the desired illuminance.

[0037] After determining the layout design information of the lighting fixtures in the room components, the lighting fixtures can be arranged in the room components based on the layout design information.

[0038] In one embodiment of the present invention, the method may further include the following steps: The avoidance objects within the room components are identified from the building information model. In the event of a collision risk between the luminaire and the avoidance object, the offset of the luminaire is determined based on the position information of the avoidance object and the position information of the luminaire. The layout design information of the luminaire in the room components is then adjusted based on the offset.

[0039] The object to be avoided can be any component within the room structure that needs to be avoided. Specifically, it can be any component located within the room structure other than structural walls, such as frame columns, ductwork, electrical cabinets, and pipe hangers. Collision risk refers to the risk of the luminaire colliding with the object to be avoided. Location information refers to the position of the object to be avoided within the room structure. Offset amount refers to the amount of displacement required to shift the luminaire.

[0040] After obtaining the layout design information of the lighting fixtures in the room components, the avoidance objects within the room components can be determined from the building information model. That is, the other components in each room component, excluding structural wall components, can be determined. After determining the avoidance objects, the position information of each lighting fixture in the room component and the position information of each avoidance object can be determined based on the layout design information. Then, based on the position information of each lighting fixture and the position information of each avoidance object, it can be determined whether there is a risk of collision between the lighting fixtures and the avoidance objects.

[0041] In practical applications, after obtaining the positional information of each light fixture and each object to be avoided, the volume of each light fixture and each object to be avoided can be determined. Based on the positional and volume information of each light fixture, the space occupied by each light fixture within the room structure can be determined, and similarly, the space occupied by each object to be avoided within the room structure can be determined. After obtaining the space occupied by each light fixture and each object to be avoided, for any given light fixture, it can be determined whether there is interference between the space occupied by that light fixture and the space occupied by each object to be avoided. If interference is determined between the light fixture and at least one object to be avoided, a risk of collision between the light fixture and the object to be avoided can be determined, thus determining whether there is a risk of collision between each light fixture and each object to be avoided.

[0042] When there is a risk of collision between the luminaire and the object to be avoided, the offset of the luminaire can be determined based on the position information of the object to be avoided and the position information of the luminaire.

[0043] In practical applications, the distance that the lamp needs to be offset can be calculated based on the position information of the object to be avoided and the position information of the lamp. That is, the distance at which the lamp can be offset without the risk of collision with the object to be avoided can be determined, and the offset amount of the lamp can be obtained.

[0044] After obtaining the offset of the light fixtures, the layout design information of the light fixtures in the room components can be adjusted based on the offset.

[0045] In practical applications, all lights can be offset based on the determined offset amount, or only lights with a collision risk can be offset so that the offset lights do not have a collision risk with the object to be avoided.

[0046] In practice, when multiple luminaires pose a collision risk with the object to be avoided, the offset of each luminaire with a collision risk can be determined sequentially, and the largest offset can be selected. All luminaires can then be offset as a whole based on this largest offset. If luminaires still pose a collision risk after the overall offset, the offset of each luminaire with a collision risk can be calculated sequentially, and each luminaire can be offset individually based on its offset.

[0047] In this embodiment of the invention, by acquiring the attribute information of room components in the building information model, the lighting requirements of the room components are determined based on the attribute information, and the layout design information of the lamps in the room components is determined according to the lighting requirements information. Based on the layout design information, the lamps are laid out in the room components, thereby automatically generating the layout of the lamps in each room in the building information model. This realizes the automatic design of lighting schemes in the lighting field, reduces the reliance on professional personnel, and thus improves the efficiency and accuracy of lighting scheme design.

[0048] See Figure 2 , Figure 2 The following is a flowchart illustrating another BIM-based lighting design method according to an embodiment of the present invention, which may specifically include the following steps: S201, Obtain the attribute information of room components in the building information model. The attribute information includes functional attribute information and room size information.

[0049] S202, Based on the functional attribute information, determine the expected illuminance information of the room components.

[0050] After obtaining the functional attribute information from the attribute information, the expected illuminance information of the room components can be determined based on the functional attribute information.

[0051] In practical applications, the purpose of a room can be determined in advance based on its functional type, and the minimum illuminance required to meet that purpose can be determined based on that purpose. This allows for the establishment of a functional type and the minimum illuminance required to meet the corresponding function. In other words, the minimum illuminance required for a room can be determined based on its functional type, which means that the expected illuminance information of room components can be determined based on functional attribute information.

[0052] In practice, different functional types correspond to different levels of task detail and require varying intensities of visual observation, thus necessitating different levels of illumination. For example, the more detailed the task and the higher the required level of detail, the greater the illumination required.

[0053] Based on this, the minimum illuminance required for different functional types can be determined in advance, which is the expected illuminance information for that functional type. Alternatively, based on the minimum illuminance required for different functional types, all functional types can be divided into multiple sets, such as a high-demand set, a medium-demand set, and a low-demand set, with each set corresponding to a minimum illuminance that can meet the minimum requirements of all functional types in that set.

[0054] For example, a pump room serves as a place to maintain pump equipment. Since the pumps are large and have large gauges, only low illumination is needed for maintenance. Therefore, the minimum required illuminance for a pump room is 100 lx. A low-voltage power distribution room serves as a place to maintain electrical equipment. Because electrical equipment, such as circuit breakers and terminals, is small and requires high precision, medium illumination is needed. Therefore, the minimum required illuminance for a low-voltage power distribution room is 200 lx. A communication equipment room serves as a place to maintain circuit boards within electrical equipment. Because the components on circuit boards are small, such as tiny pins and capacitors, and require even higher precision, high illumination is needed. Therefore, the minimum required illuminance for a communication equipment room is 300 lx.

[0055] As an example, after establishing the functional type and the minimum illuminance required to satisfy the corresponding function, the functional type of the room component can be determined based on the functional attribute information, and the set to which the functional type belongs can be determined. Then, the illuminance corresponding to the set to which it belongs is the expected illuminance information of the room component.

[0056] S203, based on the desired illuminance information and attribute information, determine the desired number of luminaires for the room components.

[0057] After obtaining the desired illuminance information, the desired number of light fixtures for the room components can be determined based on the desired illuminance information and the room size information in the attribute information.

[0058] In practical applications, the number of luminaires required to achieve the desired illuminance within a space with room size information can be assessed to obtain the desired number of luminaires for that room component.

[0059] In one embodiment of the present invention, the following steps may be included before step S203: Determine the size range of room components in the building information model and the range of the number of lamps. Determine the average illuminance information of different numbers of lamps within the range of the number of lamps in test rooms of different sizes within the range of the size range. Establish the mapping relationship between the average illuminance information and the size of the test room and the number of lamps to obtain an illuminance mapping table. Then, execute step S203 based on the illuminance mapping table.

[0060] The dimensions range can be the range of room component dimensions in the Building Information Model (BIM). The number of luminaires range can be the data range for luminaire placement in the room components; this range can be determined empirically or defined by the user. The test room can be a room used to test the illuminance provided by different numbers of luminaires in spaces of different sizes; the test room can be a simulated room. The average illuminance information can be the average illuminance of the test room. The illuminance mapping table can include the average illuminance information of different numbers of luminaires in test rooms of different sizes.

[0061] Specifically, since the building information model includes multiple room components, and each room component has a different size, the size range of all room components can be determined. That is, the largest and smallest size of all room components can be determined. The smallest size is the minimum value of the size range, and the largest size is the maximum value of the size range.

[0062] Before determining the desired illuminance information of room components, the size range of room components in the building information model can be determined in advance, that is, the largest and smallest dimensions among all room components in the building information model are determined, and then the size range of room components in the building information model is determined based on the largest and smallest dimensions.

[0063] Simultaneously, the range of light fixture quantities can be determined. Specifically, the range of light fixture quantities refers to the range of light fixture quantities within a room component. Since different room components have different dimensions, and the number of light fixtures arranged in room components of different sizes also varies, the range of light fixture quantities in a room component can be determined from the building information model built over a period of time. That is, the maximum and minimum number of light fixtures can be determined from the building information model built over a period of time, and the range of light fixture quantities for a room component can be determined based on the maximum and minimum number of light fixtures. In addition, the range of light fixture quantities can also be user-defined.

[0064] After determining the size range of the room components and the range of the number of lamps, the average illuminance information of different numbers of lamps within the range of the number of lamps can be determined in test rooms of different sizes within the range of the size range.

[0065] Specifically, the power of the aforementioned lamps is usually a preset value, which is 36W.

[0066] In practical applications, a set of test sizes can be generated according to a preset step size and size range. At the same time, a set of test quantities can be generated according to a preset step size and number of lamps.

[0067] For example, the size range can be from 20 square meters to 80 square meters, and the preset step size can be 2 square meters. Then, a test size set can be generated according to the step size and the size range. This set includes 20 square meters, 22 square meters, 24 square meters...78 square meters, 80 square meters. Similarly, the number of lamps can be from 2 to 30, and the preset step size can be 1 lamp. Then, a test quantity set can be generated according to the step size and the number of lamps. This set includes 2 lamps, 3 lamps...30 lamps.

[0068] After obtaining the test size set and the test quantity set, for any number of lamps in the test quantity set, determine the illuminance of that number of lamps in test rooms of different sizes in the test size set, and based on the determined illuminance and the corresponding size, determine the average illuminance information of that number of lamps in test rooms of different sizes in the test size set.

[0069] For example, the test size set can include 20 square meters, 22 square meters...78 square meters, 80 square meters, and the test quantity set can include 2 lamps, 3 lamps...30 lamps. For a quantity of 2 lamps, the illuminance provided by 2 lamps in a 20-square-meter test room can be determined, as well as the average illuminance information provided within that 20-square-meter test room. Similarly, the illuminance provided by 2 lamps in a 22-square-meter test room can be determined, as well as the average illuminance information provided within that 22-square-meter test room, and so on, up to the average illuminance information for 2 lamps in an 80-square-meter test room. Likewise, the average illuminance information for 3, 4...30 lamps in test rooms of different sizes can be obtained, thus enabling the acquisition of average illuminance information for different quantities of lamps within a range of test room sizes.

[0070] As an example, average illuminance information can be determined using the following formula:

[0071] Where E can represent the average illuminance information, N can be the number of lamps, S can be the room size information, φ can be the luminous flux of each lamp, U can be the utilization factor, and K can be the maintenance factor.

[0072] Specifically, the luminous flux of each luminaire is related to its power, being the product of its power and luminous efficacy. The luminous efficacy of a luminaire is related to its model; different models have different luminous efficiencies. The utilization factor refers to the ratio between the luminous flux provided by a luminaire to the working area of ​​a room component and the total luminous flux provided by that luminaire. Its value ranges from 0.5 to 0.7, and is generally set to 0.6. The maintenance factor refers to the proportion of luminous flux attenuation due to aging after long-term use. It is related to the functional attributes of the room components; different functional types of room components correspond to different maintenance factors, specifically related to the room component's environmental cleaning requirements. Higher cleaning requirements result in a higher maintenance factor. In most cases, the maintenance factor can be set to 0.7.

[0073] After obtaining the average illuminance information, a mapping relationship can be established between the average illuminance information and the size of the test room and the number of lamps, resulting in an illuminance mapping table.

[0074] In practical applications, after obtaining the average illuminance information of different numbers of lamps within a range of lamp quantity in test rooms of different sizes within a range of size, it can be determined that different average illuminance information is provided by the corresponding number of lamps in test rooms of corresponding sizes. This is the mapping relationship between average illuminance information and the size of the test room and the number of lamps.

[0075] For example, two lamps provide an average illuminance of 189.5 lx in an 18-square-meter test room, three lamps provide an average illuminance of 284.3 lx in the same room, and three lamps provide an average illuminance of 255.8 lx in a 20-square-meter test room. A mapping relationship can then be established between the average illuminance information and the size of the test room and the number of lamps. Specifically, an average illuminance of 189.5 lx corresponds to a test room size of 18 square meters and two lamps; an average illuminance of 255.8 lx corresponds to a test room size of 20 square meters and three lamps; and an average illuminance of 284.3 lx corresponds to a test room size of 18 square meters and two lamps. An illuminance mapping table can then be established based on this mapping relationship.

[0076] In one embodiment of the present invention, after determining the size range of room components and the number range of lamps, the selection of lamps can also be determined, and the illuminance power density of any number of lamps of any model in test rooms of different sizes in the test size set can be determined.

[0077] Specifically, Lighting Power Density (LPD) can be the total power of all luminaires and their associated driving equipment per unit area.

[0078] It is important to understand that different models of lamps have different wattages, and lamps with different wattages can provide different illuminance levels. Consequently, the average illuminance information provided by lamps with different wattages will also be different in different test rooms.

[0079] In practical applications, illuminance power density can be determined based on the size of the test room, the power of the luminaires, and the number of luminaires.

[0080] After obtaining the illuminance power density of each luminaire in test rooms of different sizes within the test size set, a mapping relationship can be established between the average illuminance information and the size of the test room, the number of luminaires, and the illuminance power density.

[0081] For example, for a 36W luminaire, three lamps in a 20-square-meter test room provided an average illuminance of 252.5 lx and an LPD of 5.4 W / m². 2 For the 48W luminaire, three lamps provided an average illuminance of 336.2 lx and an LPD of 7.2 W / m² in a 20 square meter test room. 2 Thus, the average illuminance information of 252.5 lx corresponds to a test room size of 20 square meters, 3 light fixtures, and an LPD of 5.4 W / m². 2 The average illuminance of 336.2 lx corresponds to a test room size of 20 square meters, 3 luminaires, and an LPD of 7.2 W / m². 2 An illumination mapping table is established based on the above mapping relationship.

[0082] In one embodiment of the present invention, step S203 may include the following steps: Based on the desired illuminance information and attribute information, determine the desired number of luminaires for room components from the illuminance mapping table.

[0083] After obtaining the illuminance mapping table, the room size information in the attribute information can be determined, and the number of multiple luminaires that meet the expected illuminance information and whose test room size is greater than or equal to the room size information of the room component can be determined from the illuminance mapping table. The minimum number of luminaires is then determined as the expected number of luminaires for that room component.

[0084] For example, if the desired illuminance information for a room component is 100 lx and the room size is 20 square meters, and the illuminance mapping table shows that 2 lamps provide an average illuminance of 189.5 lx in an 18-square-meter test room, 3 lamps provide an average illuminance of 284.3 lx in an 18-square-meter test room, 3 lamps provide an average illuminance of 255.8 lx in a 20-square-meter test room, and 4 lamps provide an average illuminance of 341.0 lx in a 20-square-meter test room, then the average illuminance information can be determined. For luminaires with an average illuminance greater than 100 lx and a test room area greater than 20 square meters, the number of luminaires includes 3 and 4 luminaires. The minimum number of luminaires is selected as the expected number of luminaires for that room component, i.e., the expected number of luminaires for that room component is 3 luminaires. For example, if the expected illuminance information for a room component is 200 lx and the room size information is 18 square meters, then the number of luminaires with an average illuminance greater than 200 lx and a test room area greater than 18 square meters can be determined to include 3 and 4 luminaires. The minimum number of luminaires is selected as the expected number of luminaires for that room component.

[0085] In one embodiment of the present invention, step S203 may include steps S2031 to S2032: S2031, Determine the upper limit of power density of room components based on the attribute information of room components.

[0086] Among them, the upper limit of power density can be the upper limit of the illuminance power density that the room components can withstand.

[0087] After obtaining the attribute information of the room components, the upper limit of the power density of the room components can be determined.

[0088] In practical applications, the upper limit of power density for room components can be determined from national standards such as the "Metro Design Code" and the "Building Lighting Design Standard".

[0089] For example, when the room component is a pump room, the LPD limit for the pump room can be determined to be 3.8 W / m². 2 That is, the upper limit of the power density of the pump room is 3.8W / m². 2 When the room structure is a low-voltage distribution room, the upper limit of the power density of the low-voltage distribution room can be determined to be 7.2W / m². 2 When the room structure is a communication equipment room, the upper limit of the power density of the communication equipment room can be determined to be 9W / m². 2 .

[0090] S2032, determine the number of luminaires that meet the desired illuminance information and power density upper limit from the illuminance mapping table, and obtain the desired number of luminaires for the room components.

[0091] After obtaining the illuminance mapping table and the upper limit of power density, the number of luminaires that meet the desired illuminance information and the upper limit of power density can be determined from the illuminance mapping table. That is, the number of multiple luminaires that meet the desired illuminance information and whose upper limit of power density is greater than or equal to the illuminance power density can be determined from the illuminance mapping table, and the number of luminaires with the smallest number can be determined as the desired number of luminaires for the room component, thereby obtaining the desired number of luminaires for the room component.

[0092] For example, the desired illuminance information for a room component can be 100 lx, and the upper limit of power density can be 5 W / m². 2 The lighting map table includes average illuminance information of 189.5 lx, 255.8 lx, and 336.2 lx, along with their corresponding illuminance power densities. The average illuminance of 189.5 lx corresponds to 2 luminaires and an illuminance power density of 3.6 W / m². 2 An average illuminance of 255.8 lx corresponds to 3 luminaires and an illuminance power density of 5.4 W / m². 2 An average illuminance of 336.2 lx corresponds to 4 luminaires and an illuminance power density of 7.2 W / m². 2 This allows us to determine that the average illuminance information is greater than 100 lx and the illuminance power density is less than 5 W / m². 2 The number of light fixtures is 2, which is the expected number of light fixtures for the components of this room.

[0093] In one embodiment of the present invention, after determining the desired number of light fixtures for the room components, the model of the light fixtures can also be determined, that is, the power of the selected light fixtures can be determined, such as selecting 4 light fixtures with an illuminance power density of 7.2W / m². 2 Therefore, the power of the selected lamps can be determined to be 48W, and the number of selected lamps is 3, with an illuminance power density of 5.4W / m². 2 Therefore, the power of the selected lamp can be determined to be 36W.

[0094] It should be understood that the above examples are for illustrative purposes only.

[0095] S204. Determine the maximum spacing between luminaires in the room components based on the maximum distance-to-height ratio of the luminaires.

[0096] The maximum distance-to-height ratio is the ratio between the spacing between luminaires and the height at which the luminaires are suspended, and it is used to constrain the spacing between luminaires. The maximum spacing can be the maximum value of the spacing between luminaires when they are arranged.

[0097] After determining the desired number of luminaires, the luminaire models can be identified, and the maximum height-to-distance ratio for each luminaire can be determined based on its model. Once the maximum height-to-distance ratio is obtained, the maximum spacing between luminaires within the room's structural members can be determined based on the room's structural members' height and the maximum height-to-distance ratio.

[0098] S205, based on the maximum spacing, the size information of the room components, and the expected number of luminaires in the room components, determine the layout design information of the luminaires in the room components, so as to arrange the luminaires in the room components based on the layout design information.

[0099] After obtaining the maximum distance-to-height ratio, the layout design information of the lighting fixtures in the room components can be determined based on the maximum spacing, the size information of the room components, and the expected number of lighting fixtures in the room components, so as to arrange the lighting fixtures in the room components based on the layout design information.

[0100] In practical applications, the minimum bounding rectangle of a room component can be determined based on its size information. Then, based on the desired number of light fixtures, n columns × m rows of arrangement information can be generated within the minimum bounding rectangle of the room component, where n × m is the desired number of light fixtures. The spacing between each column and each row is less than the maximum spacing, thus obtaining the layout design information of the light fixtures in the room component.

[0101] As an example, the layout information of the lamps in the room component can be generated in n columns × m rows within the minimum bounding rectangle of the room component according to the expected number of lamps, where n × m is the expected number of lamps, and the spacing between each column and each row is less than the maximum spacing, and the distance between each column and each row and the boundary of the room component is less than a preset distance threshold, so as to obtain the layout design information of the lamps in the room component.

[0102] In one embodiment of the present invention, after obtaining the layout design information of the lamps, wires for connecting each lamp can be generated based on the spatial relationship between each lamp and the electrical connection logic. Based on the attribute information of the room components, the opening direction of the door components and the opening direction of the window components in the room components can be determined. Then, based on the opening direction of the door components and the opening direction of the window components, switch family components can be arranged on the inner side of the structural wall components in the room components, thereby obtaining the electrical circuit for driving the lamps to turn on and off.

[0103] After obtaining the layout design of the luminaire and the design of the electrical circuit, luminaire instances, switch family instances and wire instances can be generated based on the layout design of the luminaire and the design of the electrical circuit, and the electrical parameters of each instance can be defined.

[0104] In practical applications, instance templates can be pre-built, such as lighting fixture instance templates, switch family instance templates, and wire instance templates. Then, by editing the pre-built instance templates, lighting fixture instances, switch family instances, and wire instances can be obtained.

[0105] Specifically, the electrical parameters of luminaire instances, switch family instances, and wire instances can be determined based on the luminaire model and layout, or they can be edited by the user.

[0106] In this embodiment of the invention, by acquiring the attribute information of room components in a building information model (BIM), including functional attribute information and room size information, the desired illuminance information of the room components is determined based on the functional attribute information. Based on the desired illuminance information and attribute information, the desired number of luminaires in the room components is determined. Based on the maximum distance-to-height ratio of the luminaires, the maximum spacing between the luminaires in the room components is determined. Based on the maximum spacing, the size information of the room components, and the desired number of luminaires in the room components, the layout design information of the luminaires in the room components is determined. Based on the layout design information, the luminaires are laid out in the room components, thereby automatically generating the layout of the luminaires in each room in the BIM. This achieves automatic design of lighting schemes in the lighting field, reduces reliance on professional personnel, and thus improves the efficiency and accuracy of lighting scheme design.

[0107] See Figure 3 , Figure 3 The diagram illustrates a structural schematic of a BIM-based lighting design device according to an embodiment of this application. The device may specifically include the following modules: The acquisition module 301 is used to acquire the attribute information of room components in the building information model; The determination module 302 is used to determine the lighting requirements of room components based on the attribute information; Design module 303 is used to determine the layout design information of luminaires in room components according to lighting requirement information, so as to lay out luminaires in room components based on the layout design information.

[0108] In one implementation, the attribute information includes functional attribute information and room size information; the lighting requirement information includes desired illuminance information and desired number of luminaires; and based on the attribute information, the aforementioned determining module 302 is further used for: Based on the functional attribute information, determine the expected illuminance information of the room components; Based on the desired illuminance information and attribute information, determine the desired number of light fixtures for the room components.

[0109] In one implementation, the determining module 302 is further configured to: Before determining the desired number of luminaires for room components based on the desired illuminance information and attribute information, the size range of room components in the building information model and the range of the number of luminaires are determined. Determine the average illuminance information for different numbers of luminaires within a range of luminaire quantity in test rooms of different sizes within a range of luminaire size; In one implementation, the device may further include the following modules: A module is established to create a mapping relationship between average illuminance information and the size and number of lamps in the test room, resulting in an illuminance mapping table. Based on the illuminance mapping table, the step of determining the desired number of lamps for room components according to the desired illuminance information and attribute information is performed. The illuminance mapping table includes average illuminance information for different numbers of lamps in test rooms of different sizes.

[0110] In one implementation, the determining module 302 is further configured to: Based on the attribute information of the room components, determine the upper limit of the power density of the room components; The desired number of luminaires for the room components is obtained by determining the number of luminaires that meet the desired illuminance information and power density upper limit from the illuminance mapping table.

[0111] In one implementation, the design module 303 is further used for: Determine the maximum spacing between light fixtures in the room components based on the maximum distance-to-height ratio of the light fixtures; Based on the maximum spacing, the dimensions of the room components, and the expected number of light fixtures in the room components, determine the layout design information of the light fixtures in the room components.

[0112] In one implementation, the device may further include the following modules: The avoidance module is used to identify avoidable objects within room components from the building information model. In cases where there is a risk of collision between the luminaire and the avoidable object, the module determines the offset of the luminaire based on the position information of the avoidable object and the position information of the luminaire, and adjusts the layout design information of the luminaire in the room components based on the offset.

[0113] In one implementation, the layout design information includes the arrangement of the lighting fixtures within the room components and the design information of the electrical circuits associated with the lighting fixtures.

[0114] In this embodiment of the invention, by acquiring the attribute information of room components in the building information model, the lighting requirements of the room components are determined based on the attribute information, and the layout design information of the lamps in the room components is determined according to the lighting requirements information. Based on the layout design information, the lamps are laid out in the room components, thereby automatically generating the layout of the lamps in each room in the building information model. This realizes the automatic design of lighting schemes in the lighting field, reduces the reliance on professional personnel, and thus improves the efficiency and accuracy of lighting scheme design.

[0115] It should be noted that the information interaction and execution process between the above-mentioned devices are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, which will not be repeated here.

[0116] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0117] See Figure 4 , Figure 4 This application provides a structural block diagram of an electronic device according to an embodiment of the present application, as shown below. Figure 4 As shown, this embodiment provides an electronic device 41, which includes at least one processor 411, a memory 412, and a computer program 4121 stored in the memory 412 and executable on at least one processor 411. When the processor 411 executes the computer program 4121, it implements the steps in any of the above-described method embodiments.

[0118] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can implement the steps in any of the above method embodiments.

[0119] This application provides a computer program product that, when run on a mobile terminal, enables the mobile terminal to implement the steps described in the various method embodiments.

[0120] 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, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying the computer program code to a photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium.

[0121] The above detailed description is a specific description of feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the present invention should be included in the patent scope of this case.

Claims

1. A BIM-based lighting design method, characterized in that, The method includes: Obtain the attribute information of room components in the building information model; Based on the attribute information, determine the lighting requirements of the room components; Based on the lighting requirements information, determine the layout design information of the luminaires in the room components, and then arrange the luminaires in the room components based on the layout design information.

2. The BIM-based lighting design method as described in claim 1, characterized in that, The attribute information includes functional attribute information and room size information; the lighting requirement information includes expected illuminance information and expected number of light fixtures; determining the lighting requirement information of the room components based on the attribute information includes: Based on the functional attribute information, determine the expected illuminance information of the room components; Based on the desired illuminance information and the attribute information, the desired number of light fixtures for the room components is determined.

3. The BIM-based lighting design method as described in claim 2, characterized in that, Before determining the desired number of luminaires for the room component based on the desired illuminance information and the attribute information, the method further includes: Determine the size range of the room components in the building information model, and determine the range of the number of lighting fixtures; Determine the average illuminance information of different numbers of lamps within the specified number range in test rooms of different sizes within the specified size range; A mapping relationship is established between the average illuminance information and the size of the test room and the number of the lamps to obtain an illuminance mapping table. The step of determining the desired number of lamps for the room components based on the desired illuminance information and the attribute information is then performed based on the illuminance mapping table. The illuminance mapping table includes the average illuminance information of lamps with different numbers of lamps in the test room of different sizes.

4. The BIM-based lighting design method as described in claim 3, characterized in that, Determining the desired number of light fixtures for the room components based on the desired illuminance information and the attribute information includes: Based on the attribute information of the room components, determine the upper limit of the power density of the room components; The desired number of luminaires for the room component is obtained by determining the number of luminaires that meet the desired illuminance information and the upper limit of power density from the illuminance mapping table.

5. The BIM-based lighting design method as described in any one of claims 2 to 4, characterized in that, The step of determining the layout design information of the lighting fixtures in the room components according to the lighting requirements information includes: The maximum spacing between the lamps in the room components is determined based on the maximum distance-to-height ratio of the lamps. Based on the maximum spacing, the size information of the room components, and the expected number of light fixtures in the room components, the layout design information of the light fixtures in the room components is determined.

6. The BIM-based lighting design method as described in claim 1, characterized in that, The method further includes: Identify the avoidance objects within the room components from the building information model; In the event of a collision risk between the light fixture and the object to be avoided, the offset of the light fixture is determined based on the position information of the object to be avoided and the position information of the light fixture, and the layout design information of the light fixture in the room components is adjusted based on the offset.

7. The BIM-based lighting design method as described in claim 1, characterized in that, The layout design information includes the arrangement of the lighting fixtures within the room components and the design information of the electrical circuits related to the lighting fixtures.

8. A BIM-based lighting design device, characterized in that, The device includes: The acquisition module is used to acquire attribute information of room components in the building information model; The determining module is used to determine the lighting requirements of the room components based on the attribute information; The design module is used to determine the layout design information of the lamps in the room components according to the lighting requirements information, so as to lay out the lamps in the room components based on the layout design information.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the BIM-based lighting design method as described in any one of claims 1 to 7.

10. A computer program product, said computer program product storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the BIM-based lighting design method as described in any one of claims 1 to 7.

Images