A smoke prevention and ventilation intelligent reminder method based on BIM model

Abstract

The present invention discloses a smoke exhaust and ventilation intelligent reminder method based on BIM model, which relates to the technical field of BIM design. It utilizes the data of room attribute parameters in the BIM model to transfer data between different BIM model files, supports data extraction and processing within a custom selected range, and performs judgment analysis and filtering through formulated rules to realize a real-time regular automatic filling reminder function for real-time review by designers, and can effectively solve the problems existing in the forward design process based on BIM.

Description

Technical Field

[0001] The present invention relates to the technical field of BIM design, and in particular to a smoke prevention and ventilation intelligent reminder method based on a BIM model. Background Art

[0002] In the forward design process of BIM (Building Information Modeling), there is a wealth of data in the BIM model for designers to edit and use. In the process of multi-disciplinary collaborative design, each discipline usually has its own separate BIM model. For example, the HVAC professional model is usually a separate BIM model, and the architectural professional model is a separate BIM model. The two separate BIM models are linked, and the plan view and three-dimensional model of the linked model can be seen on the professional model. However, the existing software only allows the data in the linked model to be visible and checkable, but the data in the linked BIM model, such as the name of the building room, the area of ​​the building room, the window attributes, etc., cannot be effectively edited, extracted, and interoperable, and can only be viewed. This system can prevent non-professionals from modifying the linked model at will, ensuring the controllability of the data. However, it also limits the effective use of data and fails to bring out its value, such as analysis, calculation, prompts, etc. Therefore, in the process of forward design of HVAC professional BIM model by linking the building model, aiming at the two common pain points of this professional design, combined with the characteristics of BIM software and data attributes, the difficulties and requirements of BIM application in the following two aspects are analyzed as follows:

[0003] Smoke exhaust: According to the mandatory clause 8.5.3 in the Code for Fire Protection Design of Buildings GB50016, smoke exhaust facilities should be installed in the following places or parts of civil buildings: above-ground rooms in public buildings with a construction area greater than 100 m2 and where people often stay; underground or semi-underground buildings (rooms) and windowless rooms in above-ground buildings, when the total construction area is greater than 200 m2 or the construction area of ​​a room is greater than 50 m2, and where people often stay or there are many combustible materials, smoke exhaust facilities should be installed. If the smoke exhaust facilities are missing in the above areas related to the smoke exhaust area data, serious losses will be caused. In the actual design process, there are still certain pain points in the implementation of this article, which are manifested as follows: architectural designers often modify the room area many times during the design process, and there is a lag in the transmission of change information in the adjustment process, which can easily lead to the HVAC professionals failing to notice the changes in the area in time. And part of it is caused by the fine-tuning of the wall, especially some data close to 50㎡ and 100㎡, such as 49㎡ moved to 51㎡, which is not easy to view; the installation of smoke exhaust facilities in rooms above the HVAC professional will affect the setting of the smoke exhaust system, the opening of the natural smoke exhaust window and other multi-professional coordination details. If it is discovered later, it is easy to affect the design of multiple disciplines. Therefore, this area data needs to be automatically reviewed at any time and in a timely manner. Although the design institute has set up a drawing review process before the drawing is issued, multiple people can review it to reduce the number of errors and omissions, but due to the complexity of the drawing information, and usually in the drawing stage, there are only room names on the HVAC base map, and no area data content. Some are too large, so this type of verification is usually not comprehensive and convenient, and it is easy to miss. Therefore, the smoke exhaust area data brings the risk of illegal review and design quality that cannot be underestimated.

[0004] Ventilation-gas fire extinguishing: Gas fire extinguishing system is a commonly used fire-fighting equipment, which can effectively reduce casualties and material losses caused by fire. In order to ensure the normal operation of the gas fire extinguishing system and maximize the fire extinguishing effect, ventilation is the most critical step. If the design is missing or improperly designed, it will cause serious losses. However, in the actual design process, there are still certain pain points in the implementation of this article, which are as follows: architectural designers often modify the room function many times according to the actual situation, and there is a delay in the transmission of the change information in the adjustment process, which may cause the water supply and drainage profession to fail to notice the setting of the gas fire extinguishing system in time; there are many types of rooms for the water supply and drainage profession to set up gas fire extinguishing systems, including basement transformer rooms, switchgears and computer rooms, etc., which exist in the specification provisions and relevant regulations and are related to the characteristics of the project. Whether it is set up only exists in its single professional design results (drawings or models), which cannot be effectively, clearly and accurately transmitted to the HVAC profession, which may cause the HVAC profession to be unable to set up its ventilation system based on evidence. HVAC designers often set up their ventilation systems according to relevant specifications and personal experience. Although the design institute sets up a drawing review process before the drawing is issued, which can be reviewed by multiple people to reduce the number of errors and omissions, due to the complexity of the drawing information, the room names on the CAD platform are text, and the room names on the Revit platform are room tags, which do not contain relevant information about the gas fire extinguishing system. As a result, this type of verification is usually not fully carried out and is easy to be missed. In the design mode of the BIM-based Revit platform, the gas fire extinguishing room is still consistent with the traditional two-dimensional CAD design, and the designer manually judges the room and compliance of the system to be designed. Therefore, it is extremely difficult to completely avoid errors and omissions in the ventilation system of the gas fire extinguishing room, which brings the risk of review violations and design quality risks that cannot be underestimated.

[0005] To sum up, how to avoid the above two risks and reduce human errors in the design stage; and, based on the increasing popularity of BIM forward design, using the efficient means of BIM technology to provide targeted intelligent reminders has become an urgent problem to be solved, and is also the innovation of this patent. Summary of the invention

[0006] The purpose of the present invention is to provide a smoke prevention and exhaust and ventilation intelligent reminder method based on a BIM model, which solves the technical problems existing in the prior art.

[0007] The present invention is achieved through the following technical solutions:

[0008] A smoke exhaust and ventilation intelligent reminder method based on a BIM model, comprising:

[0009] The parameter attribute information to be screened is loaded into the room attribute of the building professional BIM model file by intelligent loading; wherein the parameter attribute information to be screened at least includes gas fire extinguishing, which is used for the staff to adjust the room attribute of the building professional BIM model file, thereby adjusting whether the room needs gas fire extinguishing;

[0010] Link the electromechanical and heating BIM model file to the architectural BIM model file, and after linking, perform smoke extraction and filtering based on the room attribute information of the architectural BIM model file to obtain the target room;

[0011] The target filling style determined by the staff through human-computer interaction is obtained, and the target room is filled with smoke exhaust reminders according to the target filling style determined by the staff or the default filling style. At the same time, the filled target room is automatically marked for ventilation to realize smoke exhaust and ventilation intelligent reminders.

[0012] In a possible implementation manner, before the smoke exhaust extraction and filtration is performed, the method further includes:

[0013] Determine whether the staff member selects a range through human-computer interaction. If so, obtain the staff member's selection range, and subsequently perform smoke extraction and filtering based on the selection range; otherwise, obtain the current default view range, and subsequently perform smoke extraction and filtering based on the current default view range.

[0014] In a possible implementation manner, after the target room is filled with smoke exhaust reminder according to the target filling pattern or the default filling pattern determined by the staff, the method further includes:

[0015] A first clearing instruction input by a staff member through human-computer interaction is obtained, and the filling in the building professional BIM model file is cleared according to the first clearing instruction.

[0016] In a possible implementation manner, after automatically marking the filled target room for ventilation, the method further includes:

[0017] A second clearing instruction input by the staff through human-computer interaction is obtained, and the mark in the building professional BIM model file is cleared according to the second clearing instruction.

[0018] In a possible implementation manner, after automatically marking the filled target room for ventilation, the method further includes:

[0019] Obtain the hidden instructions input by the staff through human-computer interaction, and hide the marks in the building professional BIM model file according to the hidden instructions.

[0020] In a possible implementation, the parameter attribute information to be screened is loaded into the room attribute of the building professional BIM model file by intelligent loading, including:

[0021] Through C# secondary development and the API interface of Revit software, the parameter attribute information to be screened based on the room can be directly loaded into the room attributes of the architectural professional BIM model file in the form of a plug-in.

[0022] In a possible implementation, the electromechanical and heating BIM model file is linked to the architectural BIM model file, and after the linking, smoke extraction and filtering are performed according to the room attribute information of the architectural BIM model file to obtain the target room, including:

[0023] Link the MEP HVAC BIM model file to the architectural BIM model file;

[0024] Through C# secondary development and the API interface of Revit software, the room that needs gas fire extinguishing is determined according to the room attribute information of the building professional BIM model file after linking;

[0025] Based on the room that requires gas fire extinguishing, smoke extraction and filtration are carried out to obtain the target room.

[0026] In a possible implementation, based on the room that requires gas fire extinguishing, smoke extraction and filtration are performed to obtain the target room, including:

[0027] The rooms that require gas fire extinguishing are screened and classified according to the preset area value range, so as to achieve smoke extraction and filtration to obtain the target room.

[0028] In a possible implementation manner, the preset area value range includes: ≤50 m2, 50-100 m2, and >100 m2.

[0029] In a possible implementation, a target filling pattern determined by a staff member through human-computer interaction is obtained, and a smoke exhaust reminder is filled in a target room according to the target filling pattern determined by the staff member or a default filling pattern, and ventilation marking is automatically performed on the filled target room, including:

[0030] Obtain the target filling style determined by the staff through human-computer interaction;

[0031] Determine whether the target filling style determined by the staff through human-computer interaction is successfully obtained. If so, determine to use the target filling style for filling to obtain a filling method. Otherwise, use the default filling style for filling to obtain a filling method.

[0032] For the target rooms with area data of ≤50㎡, no further operation is performed and the process ends;

[0033] For the target rooms with area data of 50㎡-100㎡, fill them according to the filling method and fill them with the first color;

[0034] For the target rooms with area data of >100㎡, fill them according to the filling method and fill them with the second color;

[0035] The first color and the second color are different colors.

[0036] The invention provides a smoke exhaust and ventilation intelligent reminder method based on BIM model, which uses the data of room attribute parameters in BIM model to transfer data between different BIM model files, and supports data extraction and processing within a custom selected range. It also performs judgment analysis and filtering through the formulated rules, and realizes the real-time regular automatic filling prompt function for real-time review by designers, which can effectively solve the problems existing in the forward design process based on BIM. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0038] Figure 1 A flow chart of a smoke prevention and ventilation intelligent reminder method based on a BIM model provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0040] As a possible implementation, Figure 1 As shown, an embodiment of the present invention provides a smoke prevention and ventilation intelligent reminder method based on a BIM model, comprising:

[0041] S101, loading the parameter attribute information to be screened into the room attributes of the building professional BIM model file by intelligent loading; wherein the parameter attribute information to be screened at least includes gas fire extinguishing, which is used for the staff to adjust the room attributes of the building professional BIM model file, thereby adjusting whether the room needs gas fire extinguishing;

[0042] S102, linking the electromechanical heating and ventilation BIM model file to the architectural BIM model file, and after the linking, performing smoke exhaust extraction and filtering according to the room attribute information of the architectural BIM model file to obtain the target room;

[0043] S103, obtaining the target filling style determined by the staff through human-computer interaction, and filling the target room with smoke exhaust reminders according to the target filling style determined by the staff or the default filling style, and automatically marking the filled target room for ventilation to achieve smoke exhaust and ventilation intelligent reminders.

[0044] In a possible implementation manner, before the smoke exhaust extraction and filtration is performed, the method further includes:

[0045] Determine whether the staff member selects a range through human-computer interaction. If so, obtain the staff member's selection range, and subsequently perform smoke extraction and filtering based on the selection range; otherwise, obtain the current default view range, and subsequently perform smoke extraction and filtering based on the current default view range.

[0046] In a possible implementation manner, after the target room is filled with smoke exhaust reminder according to the target filling pattern or the default filling pattern determined by the staff, the method further includes:

[0047] A first clearing instruction input by a staff member through human-computer interaction is obtained, and the filling in the building professional BIM model file is cleared according to the first clearing instruction.

[0048] In a possible implementation manner, after automatically marking the filled target room for ventilation, the method further includes:

[0049] A second clearing instruction input by a staff member through human-computer interaction is obtained, and the mark in the building professional BIM model file is cleared according to the second clearing instruction.

[0050] In a possible implementation manner, after automatically marking the filled target room for ventilation, the method further includes:

[0051] Obtain the hidden instructions input by the staff through human-computer interaction, and hide the marks in the building professional BIM model file according to the hidden instructions.

[0052] In a possible implementation, the parameter attribute information to be screened is loaded into the room attribute of the building professional BIM model file by intelligent loading, including:

[0053] Through C# secondary development and the API interface of Revit software, the parameter attribute information to be screened based on the room can be directly loaded into the room attributes of the architectural professional BIM model file in the form of a plug-in.

[0054] In a possible implementation, the electromechanical and heating BIM model file is linked to the architectural BIM model file, and after the linking, smoke extraction and filtering are performed according to the room attribute information of the architectural BIM model file to obtain the target room, including:

[0055] Link the MEP HVAC BIM model file to the architectural BIM model file;

[0056] Through C# secondary development and the API interface of Revit software, the room that needs gas fire extinguishing is determined according to the room attribute information of the building professional BIM model file after linking;

[0057] Based on the room that requires gas fire extinguishing, smoke extraction and filtration are carried out to obtain the target room.

[0058] In a possible implementation, based on the room that requires gas fire extinguishing, smoke extraction and filtration are performed to obtain the target room, including:

[0059] The rooms that require gas fire extinguishing are screened and classified according to the preset area value range, so as to achieve smoke extraction and filtration to obtain the target room.

[0060] In a possible implementation manner, the preset area value range includes: ≤50 m2, 50-100 m2, and >100 m2.

[0061] In a possible implementation, a target filling pattern determined by a staff member through human-computer interaction is obtained, and a smoke exhaust reminder is filled in a target room according to the target filling pattern determined by the staff member or a default filling pattern, and ventilation marking is automatically performed on the filled target room, including:

[0062] Obtain the target filling style determined by the staff through human-computer interaction;

[0063] Determine whether the target filling style determined by the staff through human-computer interaction is successfully obtained. If so, determine to use the target filling style for filling to obtain a filling method. Otherwise, use the default filling style for filling to obtain a filling method.

[0064] For the target rooms with area data of ≤50㎡, no further operation is performed and the process ends;

[0065] For the target rooms with area data of 50㎡-100㎡, fill them according to the filling method and fill them with the first color;

[0066] For the target rooms with area data of >100㎡, fill them according to the filling method and fill them with the second color;

[0067] The first color and the second color are different colors.

[0068] The invention provides a smoke exhaust and ventilation intelligent reminder method based on BIM model, which uses the data of room attribute parameters in BIM model to transfer data between different BIM model files, and supports data extraction and processing within a custom selected range. It also performs judgment analysis and filtering through the formulated rules, and realizes the real-time regular automatic filling prompt function for real-time review by designers, which can effectively solve the problems existing in the forward design process based on BIM.

[0069] Especially in the process of BIM forward design of HVAC specialty, the mandatory implementation clauses of the national standard for smoke exhaust and ventilation are used to implement intelligent reminder functions based on BIM, effectively exert the value of BIM, and enhance the advantages of BIM collaborative design: designers can use the present invention to add gas fire extinguishing judgment parameters to the room attributes in the information model. Information between multi-professional designers has a stable way to be transmitted, and the information data is unique and real-time. Based on the only data source, the designer can dynamically detect the gas fire extinguishing room in the design view in real time, and highlight the color filling in the current view or specified range according to the designer's needs to remind and automatically mark the relevant marks. The new method of reviewing and prompting rooms with smoke exhaust settings using BIM technology proposed in the present invention improves the degree of digitalization of the design, effectively reduces the probability of low-level manual errors, ensures the accuracy of the design, and improves the overall design efficiency of the project. For the digitalization, informatization and intelligent transformation of the current construction field, the foundation for the construction drawing design is being comprehensively promoted through BIM forward design.

[0070] As a possible implementation method, this embodiment is a further example based on an embodiment of a smoke exhaust and ventilation intelligent reminder method based on a BIM model, and the specific principles are as follows.

[0071] A smoke prevention and ventilation intelligent reminder method based on a BIM model may include:

[0072] Step 1: For the loading of room data information of BIM model, through C# secondary development and the API interface of Revit software, the parameter attribute information to be screened based on the room is directly loaded into the room attributes of the architectural professional BIM model file in the form of a plug-in, rather than manually loading.

[0073] For example, a parameter named "gas fire extinguishing" is loaded, where the parameter type is yes / no; the architectural designer can define whether the room requires gas fire extinguishing by checking "yes" or "no" for the parameter in the BIM model file of the architectural profession according to the water supply and drainage funding content.

[0074] Step 2: Open the mechanical and electrical or HVAC BIM model file and load the building BIM model by linking.

[0075] During multi-disciplinary collaborative design, the BIM model of the non-architectural profession needs to be linked to the BIM model in order to display the building model and attribute information in the BIM model of the architectural profession. For the protection of information and the relative independence of each profession, the information can only be viewed but not edited.

[0076] Step 3: Through C# secondary development and the API interface of Revit software, the room attribute information in the linked building BIM model is automatically extracted and filtered.

[0077] Including: filtering and extracting data from rooms with the "gas fire extinguishing" parameter checked as "yes" in the room attribute information;

[0078] Including: According to the mandatory clause 8.5.3 in the Code for Fire Protection Design of Buildings GB50016, the limit values ​​in the code are converted into three types: ≤50㎡, 50-100㎡, and >100㎡. And set them as judgment program rules to automatically screen, judge and review the extracted area data.

[0079] Step 4: The designer selects the fill style to be displayed according to the project characteristics. The fill style automatically reads all the fill styles set in this model and lists them for the designer to choose.

[0080] Step 5. In the current view, fill the rooms selected in step 3 in the plan view.

[0081] Highlight fill display on the plane of the room filtered out as "gas fire extinguishing" to facilitate designers to view;

[0082] For the rooms with area data of ≤50㎡, no further operation is performed and the process ends.

[0083] For rooms with area data of 50㎡-100㎡, fill them with color A.

[0084] For rooms with area data greater than 100 m2, fill them with color B.

[0085] Among them, designers can customize A and B colors according to their design habits.

[0086] Step 6: In the current view, the filled rooms are automatically marked. The marking content is displayed as a reminder field such as "This room is a gas fire extinguishing room" to remind designers. This field can be modified or not displayed according to design habits.

[0087] Step 7. Click Clean to clear the fills and marks in the current view so as not to affect the designer's other design work on the plane.

[0088] Step 8: Identify, filter, fill, and mark functions. In addition to being performed within the entire range of the current view, designers can also manually select the area to be judged.

[0089] Through the new method of using BIM technology to remind rooms that need to be equipped with smoke exhaust and ventilation (gas fire extinguishing) and the auxiliary reminder tools provided by the present invention, multi-professional designers can effectively use the data in other linked BIM models in different BIM models: transfer area data, transfer room gas fire extinguishing attribute information;

[0090] Through the auxiliary reminder tool provided by the present invention, HVAC designers can regularize and judge the area data in the linked building model according to the smoke exhaust area specification requirements, and make clear color-filled reminders in the view of this BIM model for the rooms where smoke exhaust facilities need to be installed.

[0091] Through the auxiliary reminder tool provided by the present invention, designers specializing in HVAC can perform regular processing and judgment on the rooms with gas fire extinguishing room attributes in the linked building model, and make clear color-filled reminders of the rooms that need ventilation (gas fire extinguishing) in the view of this BIM model.

[0092] The reminder display range can be customized to the current view or the frame selection range, with high display flexibility.

[0093] After the reminder area is automatically judged, the designer can quickly see the reminder in the current view through the built-in highlight fill color, and close it with one click without affecting the design content of this view.

[0094] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A smoke prevention and ventilation intelligent reminder method based on BIM model, characterized in that: include: The parameter attribute information to be screened is loaded into the room attribute of the building professional BIM model file by intelligent loading; wherein the parameter attribute information to be screened at least includes gas fire extinguishing, which is used for the staff to adjust the room attribute of the building professional BIM model file, thereby adjusting whether the room needs gas fire extinguishing; Link the electromechanical and heating BIM model file to the architectural BIM model file, and after linking, perform smoke extraction and filtering based on the room attribute information of the architectural BIM model file to obtain the target room; Obtain the target filling style determined by the staff through human-computer interaction, and fill the target room with smoke exhaust reminder according to the target filling style determined by the staff or the default filling style, and automatically mark the filled target room for ventilation, so as to realize smoke exhaust and ventilation intelligent reminder; The target filling style determined by the staff through human-computer interaction is obtained, and the target room is filled with smoke exhaust reminders according to the target filling style determined by the staff or the default filling style, and the filled target room is automatically marked for ventilation, including: Obtain the target filling style determined by the staff through human-computer interaction; Determine whether the target filling style determined by the staff through human-computer interaction is successfully obtained. If so, determine to use the target filling style for filling to obtain a filling method. Otherwise, use the default filling style for filling to obtain a filling method. For the target rooms with area data of ≤50㎡, no further operation is performed and the process ends; For the target rooms with area data of 50㎡-100㎡, fill them according to the filling method and fill them with the first color; For the target rooms with area data of >100㎡, fill them according to the filling method and fill them with the second color; The first color and the second color are different colors.

2. The smoke prevention and ventilation intelligent reminder method based on the BIM model according to claim 1 is characterized in that: Before smoke extraction filtration, it also includes: Determine whether the staff member selects a range through human-computer interaction. If so, obtain the staff member's selection range, and subsequently perform smoke extraction and filtering based on the selection range; otherwise, obtain the current default view range, and subsequently perform smoke extraction and filtering based on the current default view range.

3. The smoke prevention and ventilation intelligent reminder method based on the BIM model according to claim 1 is characterized in that: After the target room is filled with smoke exhaust reminder according to the target filling style or the default filling style determined by the staff, the method further includes: A first clearing instruction input by a staff member through human-computer interaction is obtained, and the filling in the building professional BIM model file is cleared according to the first clearing instruction.

4. The smoke prevention and ventilation intelligent reminder method based on the BIM model according to claim 1 is characterized in that: After automatically marking the filled target rooms for ventilation, it also includes: A second clearing instruction input by a staff member through human-computer interaction is obtained, and the mark in the building professional BIM model file is cleared according to the second clearing instruction.

5. The smoke prevention and ventilation intelligent reminder method based on the BIM model according to claim 1 is characterized in that: After automatically marking the filled target rooms for ventilation, it also includes: Obtain the hidden instructions input by the staff through human-computer interaction, and hide the marks in the building professional BIM model file according to the hidden instructions.

6. The smoke prevention and ventilation intelligent reminder method based on the BIM model according to claim 1 is characterized in that: The parameter attribute information to be screened is loaded into the room attributes of the architectural professional BIM model file through intelligent loading, including: Through C# secondary development and the API interface of Revit software, the parameter attribute information to be screened based on the room can be directly loaded into the room attributes of the architectural professional BIM model file in the form of a plug-in.

7. The intelligent reminder method for smoke prevention and ventilation based on BIM model according to claim 1 is characterized in that: Link the electromechanical and heating BIM model file to the architectural BIM model file, and then perform smoke extraction and filtering based on the room attribute information of the architectural BIM model file to obtain the target room, including: Link the MEP HVAC BIM model file to the architectural BIM model file; Through C# secondary development and the API interface of Revit software, the room that needs gas fire extinguishing is determined according to the room attribute information of the building professional BIM model file after linking; Based on the room that requires gas fire extinguishing, smoke extraction and filtration are carried out to obtain the target room.

8. The intelligent reminder method for smoke exhaust and ventilation based on BIM model according to claim 7 is characterized in that: Based on the rooms that require gas fire extinguishing, smoke extraction and filtration are performed to obtain the target rooms, including: The rooms that require gas fire extinguishing are screened and classified according to the preset area value range, so as to achieve smoke extraction and filtration to obtain the target room.

9. The intelligent reminder method for smoke prevention and ventilation based on BIM model according to claim 8 is characterized in that: The preset area value range includes: ≤50㎡, 50-100㎡ and >100㎡.

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