A city physical examination method and system based on BIM model

Abstract

The present invention relates to the field of digital city physical examination technology, and in particular to a city physical examination method and system based on a BIM model. The city physical examination method comprises: establishing a BIM three-dimensional model of a physical examination object, determining the coordinate data of the physical examination object; obtaining the position data of the physical examination personnel, and marking the position of the physical examination personnel in the BIM three-dimensional model according to the position data, and recording it as a physical examination reference point; determining the relative orientation relationship between the physical examination building components and the physical examination personnel, and marking the building components in the BIM three-dimensional model according to the physical examination reference point and the relative orientation relationship; associating the component physical examination results uploaded by the physical examination personnel with the building components. It can realize the automatic association of physical examination results with building components, effectively reduce the probability of data matching errors, and help to carry out urban physical examination work efficiently and accurately.

Description

Technical Field

[0001] The present invention relates to the technical field of digital city physical examination, and in particular to a city physical examination method and system based on a BIM model. Background Art

[0002] Urban health check is a concept proposed to further improve the pertinence and rationality of urban construction, urban renovation and upgrading. Urban health check aims to provide targeted suggestions for urban new construction planning, old district renovation, supporting upgrading, etc. through the analysis of data such as urban layout, building health, and public supporting layout, so that the implementation plans of new construction planning, old district renovation, and supporting upgrading can better serve the public and reduce costs.

[0003] In traditional urban physical examination work, the organization and uploading of physical examination data are all completed by physical examination personnel, which is a very large workload. It is very easy for physical examination data to match building components incorrectly. Once a data matching error occurs, the difficulty and workload of error correction will be even greater, which is not conducive to the efficient and accurate implementation of urban physical examination work.

[0004] In view of this, this application is hereby filed. Summary of the invention

[0005] The first purpose of the present invention is to provide a city physical examination method based on the BIM model, which can realize the automatic association of physical examination results with building components, effectively reduce the probability of data matching errors, and help to carry out urban physical examination work efficiently and accurately.

[0006] The second purpose of the present invention is to provide a city physical examination system based on the BIM model, which can realize the automatic association of physical examination results with building components, effectively reduce the probability of data matching errors, and help to carry out urban physical examination work efficiently and accurately.

[0007] The embodiment of the present invention is achieved as follows:

[0008] A city physical examination method based on a BIM model comprises the following steps:

[0009] S1. Establish a BIM three-dimensional model of the physical examination object and determine the coordinate data of the physical examination object.

[0010] S2. Obtain the location data of the physical examination personnel, and mark the location of the physical examination personnel in the BIM three-dimensional model according to the location data, and record it as a physical examination reference point.

[0011] S3. Determine the relative position relationship between the building components to be examined and the examiner, and mark the building components in the BIM three-dimensional model according to the examination reference points and the relative position relationship.

[0012] S4. Associating the component physical examination results uploaded by the physical examiner with the building components.

[0013] Furthermore, the position data includes: a horizontal coordinate, a vertical coordinate and a height coordinate.

[0014] A city physical examination system based on a BIM model comprises: a data center and a physical examination terminal. The data center is used to execute S1 in the above-mentioned city physical examination method. The physical examination terminal is used by physical examination personnel in the above-mentioned city physical examination method based on a BIM model.

[0015] The physical examination terminal has a positioning module, an orientation detection module and a data upload module. The positioning module is used to obtain the location data in the above-mentioned urban physical examination method. The orientation detection module is used to obtain the relative orientation relationship in the above-mentioned urban physical examination method based on the BIM model. The data upload module is used for the physical examination personnel in the above-mentioned urban physical examination method to upload the component physical examination results to the data center.

[0016] The data center is used to determine the physical examination reference points based on the location data, mark the corresponding building components in the BIM three-dimensional model according to the physical examination reference points and the relative orientation relationship, and associate the component physical examination results with the corresponding building components.

[0017] Furthermore, the orientation detection module includes: a gyroscope.

[0018] Furthermore, the physical examination end also has: a laser ranging module.

[0019] The laser distance measurement module is used to detect the distance between the physical examination end and the building component it is facing.

[0020] The data center is used to determine the projection point based on the physical examination reference point and the relative orientation relationship, and calculate the distance between the projection point and the physical examination reference point, which is recorded as the comparison value. If the comparison value matches the distance value, it is determined that the component physical examination result is correctly associated with the building component.

[0021] The projection point is: along the direction of the physical examination end, the geometric center point of the projection of the physical examination end on the surface of the building component it is facing.

[0022] Furthermore, the physical examination end also has: a light source module and a visual module.

[0023] The light source module and the laser distance measurement module are arranged in parallel and in the same direction.

[0024] The visual module is used to obtain image data of the irradiation point of the light source module on the surface of the corresponding building component.

[0025] The data center is used to determine the actual position of the irradiation point on the building component based on the image data, and to determine the inversion position based on the actual position, relative orientation relationship and distance value, and to correct the position data using the inversion position.

[0026] Furthermore, the data center is also used to perform the verification process, which includes the following steps:

[0027] D1. Construct a line between the actual position and the inverted position as a test line.

[0028] D2. In the same building, if a certain building component exists in the same position on each floor of the building, a detection area is defined for the building component on one of the floors. The detection area is the area that the examiner needs to enter when conducting a physical examination of the building component.

[0029] D3. Project the inspection area in a horizontal plane and record it as the projection area. Project all inspection lines corresponding to the building component in the horizontal plane and record them as projection lines.

[0030] D4. Determine the physical examination standardization degree. Physical examination standardization degree = the sum of the standard reference values ​​of all projection lines. Standard reference value = (the length of the projection line in the projection area) / (the square of the total length of the projection line). The larger the value of the physical examination standardization degree, the higher the physical examination standardization degree.

[0031] Further, the surface of the building component where the irradiation point is located is recorded as the irradiation surface. If the contrast value matches the distance value and the inverted position does not match the position data, it is determined that the position data has an error in a direction parallel to the irradiation surface.

[0032] Further, if it is determined that the position data has an error in a direction parallel to the irradiated surface, the irradiated surface is used as a reference surface.

[0033] Determine the coordinate direction in the position data that is parallel to the reference surface, and determine the coordinate direction with the largest error based on the inverted position and the position data as the error direction;

[0034] The data center is used to determine the inspection surfaces of all building components to be inspected based on the BIM three-dimensional model. The inspection surface is the surface of each building component to be inspected that is perpendicular to the error direction.

[0035] The data center is also used to prompt the physical examination end with the detection surface corresponding to each building component to be detected.

[0036] The beneficial effects of the technical solution of the embodiment of the present invention include:

[0037] The urban physical examination method based on the BIM model provided in the embodiment of the present invention can realize the automatic association between physical examination results and building components, effectively reduce the probability of data matching errors, and help to carry out urban physical examination work efficiently and accurately.

[0038] The urban physical examination system based on the BIM model provided by the embodiment of the present invention can realize the automatic association between physical examination results and building components, effectively reduce the probability of data matching errors, and help to carry out urban physical examination work efficiently and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 This is a schematic diagram of the relationship when the physical examination end is facing the building component.

[0041] Description of reference numerals:

[0042] 100-physical examination end; 200-building components. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] It should be understood that the "system", "module" and the like used in the present invention are a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0047] As shown in this specification and claims, unless the context clearly provides an example, the words "a", "an", "the", etc. do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0048] The flowcharts used in this specification are used to illustrate the operations performed by the system according to the embodiments of this specification. It is understood that the operations of each step are not necessarily performed precisely in order. On the contrary, the steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0049] In order to overcome the deficiencies in the prior art, this embodiment provides a city physical examination method based on a BIM model, the method comprising the following steps:

[0050] S1. Establish a BIM three-dimensional model of the physical examination object and determine the coordinate data of the physical examination object. The BIM three-dimensional model can contain a single building or multiple buildings (for example, constructed in units of regions). In the BIM three-dimensional model, it is necessary to clarify the coordinate data of the building, such as the longitude and latitude coordinates of the building. In addition, it is also necessary to clarify the architectural parameters of the building, including but not limited to: the three-dimensional size of the building.

[0051] S2. Obtain the location data of the physical examination personnel, and mark the location of the physical examination personnel in the BIM three-dimensional model according to the location data, and record it as the physical examination reference point. The location data includes: abscissa, ordinate and altitude coordinates. Optionally, the location data can be obtained by determining the latitude, longitude and altitude, but is not limited thereto.

[0052] S3. Determine the relative position relationship between the inspected building component 200 and the inspector, and mark the building component 200 in the BIM three-dimensional model according to the inspection reference point and the relative position relationship. Generally, when the inspector inspects the building component 200 in the building, as long as the position of the inspector is determined, the corresponding building component 200 is uniquely determined in the corresponding position. In other words, the corresponding inspected building component 200 can be determined in the BIM three-dimensional model according to the inspection reference point and the relative position relationship, so as to know which building component 200 the inspector is inspecting. The building component 200 can be a beam or a column, but is not limited thereto.

[0053] S4. Associating the component physical inspection result uploaded by the physical inspector with the building component 200. After determining the building component 200 that the physical inspector is inspecting, when the physical inspector uploads the component physical inspection result, the component physical inspection result can be automatically associated with the building component 200 currently being inspected, to ensure the accuracy of data matching.

[0054] In general, the urban physical examination method based on the BIM model provided in this embodiment can realize the automatic association between the physical examination results and the building components 200, effectively reducing the probability of data matching errors, and facilitating the efficient and accurate implementation of urban physical examination work.

[0055] In order to facilitate the implementation of the city physical examination method based on the BIM model, illustratively, this embodiment also provides a city physical examination system based on the BIM model for specifically implementing the city physical examination method based on the BIM model, and the system includes: a data center and a physical examination terminal 100.

[0056] The data center is used to execute S1 in the above-mentioned city physical examination method. The physical examination terminal 100 is used by the physical examination personnel in the above-mentioned city physical examination method based on the BIM model.

[0057] The physical examination terminal 100 has a positioning module, an orientation detection module and a data upload module. The positioning module is used to obtain the position data in the above-mentioned urban physical examination method. The orientation detection module is used to obtain the relative orientation relationship in the above-mentioned urban physical examination method based on the BIM model. The data upload module is used for the physical examination personnel in the above-mentioned urban physical examination method to upload the component physical examination results to the data center.

[0058] The data center is used to determine the physical examination reference point according to the position data, mark the corresponding building component 200 in the BIM three-dimensional model according to the physical examination reference point and the relative orientation relationship, and associate the component physical examination result with the corresponding building component 200.

[0059] The orientation detection module includes a gyroscope for obtaining relative orientation relationship.

[0060] The physical examination terminal 100 can be constructed as a handheld device, and the location of the physical examination terminal 100 can represent the location data of the physical examination person, that is, the positioning data of the positioning module of the physical examination terminal 100 is the location data of the physical examination person.

[0061] After the location data is obtained, the height coordinate can be used to determine which floor of the building the examinee is on. Combined with the horizontal and vertical coordinates, the specific location of the examinee on the corresponding floor can be determined.

[0062] When the examinee points the examinee end 100 toward the building component 200 being inspected, the orientation detection module can obtain the corresponding electrical signal according to the change in the orientation of the examinee end 100, thereby determining the current actual orientation of the examinee end 100, thereby obtaining the relative orientation relationship between the examinee and the building component 200 being inspected.

[0063] Furthermore, the physical examination end 100 also has a laser distance measurement module. The laser distance measurement module is arranged toward the front of the physical examination end 100 , that is, the direction of the laser distance measurement module is the same as that of the physical examination end 100 .

[0064] The laser distance measuring module is used to detect the distance between the physical inspection end 100 and the building component 200 it is facing, that is, the laser distance measuring module detects the distance between the physical inspection end 100 and the building component 200 currently being inspected in the direction of the physical inspection end 100.

[0065] like Figure 1 As shown, the laser ranging module can be set at the front end of the physical examination end 100, and the distance value detected is the distance between the front end of the physical examination end 100 (corresponding point A) and the surface of the building component 200 (corresponding point B) in the direction of the physical examination end 100, that is, the length of the line segment AB.

[0066] Specifically, the data center is used to determine the projection point in the BIM three-dimensional model according to the physical examination reference point and the relative orientation relationship, and calculate the distance between the projection point and the physical examination reference point according to the BIM three-dimensional model, which is recorded as a comparison value. If the comparison value matches the distance value, it is determined that the component physical examination result is correctly associated with the building component 200.

[0067] The projection point is: the geometric center point of the projection of the physical examination end 100 on the surface of the building component 200 along the direction of the physical examination end 100 (such as Figure 1 point B).

[0068] Furthermore, the physical examination end 100 also has: a light source module and a visual module.

[0069] The light source module and the laser distance measurement module are arranged in parallel and in the same direction. In this case, if the error is negligible, it can be considered that the irradiation point of the light source module on the surface of the building component 200 is located at Figure 1 At point B shown.

[0070] The visual module is used to obtain image data of the illumination point of the light source module on the surface of the corresponding building component 200 .

[0071] The data center is used to perform image analysis based on the image data. Combined with the optical parameters of the visual module, it can determine the actual position of the irradiation point on the building component 200, and determine the inversion position (i.e., the inverted position of the physical examination person) based on the actual position, relative orientation relationship and distance value, and use the inverted position to correct the position data, thereby helping to improve the indoor positioning accuracy of the positioning module.

[0072] Furthermore, the data center is also used to perform the verification process, which includes the following steps:

[0073] D1. Construct a line between the actual position and the inverted position as a test line.

[0074] D2. In the same building, if a certain building component 200 exists at the same position on each floor of the building, a detection area is defined on one floor for the building component 200. The detection area is the area that the examiner needs to enter when performing a physical examination on the building component 200.

[0075] D3. Project the detection area in a horizontal plane, which is recorded as the projection area. Project all the inspection lines corresponding to the building component 200 on each floor in the horizontal plane, which are recorded as projection lines.

[0076] D4. Determine the physical inspection standardization for each type of building component 200. The physical inspection standardization = the sum of the standard reference values ​​of all projection lines of the building component 200. The standard reference value = (the length of the projection line in the projection area) / (the square of the total length of the projection line). The larger the value of the physical inspection standardization, the higher the physical inspection standardization.

[0077] It should be noted that, in the present application, the same type of building component 200 refers to the building component 200 that exists at the same position on each floor of the building, and there is only one building component 200 of the same type at the same position on each floor. For example, if the same beams exist at the same position on each floor of a building, then these beams can be classified as the same type.

[0078] It can be understood that each projection line corresponds to a standard reference value, and the physical examination standardization is the sum of the standard reference values ​​of all projection lines. For each projection line, its corresponding standard reference value is: (its length in the projection area) / (the square of its total length).

[0079] Through the above design, it can help the background monitor whether the physical examiner is performing the inspection task within the predetermined area, so as to facilitate the evaluation of whether the inspection process of the physical examiner is standardized.

[0080] Furthermore, the urban physical examination method based on the BIM model also includes: recording the surface of the building component where the irradiation point is located as the irradiation surface, and if the comparison value matches the distance value, and the inverted position does not match the position data, it is determined that the position data has an error in the direction parallel to the irradiation surface. In this way, the specific error of the position data can be confirmed, which is convenient for technicians to accurately calibrate the positioning module of the physical examination end.

[0081] In the actual urban physical examination process, if it is found that the positioning module of the physical examination end has the above positioning error, calibration actually takes a certain amount of time, and the urban physical examination work cannot blindly wait for the positioning calibration to be completed. Therefore, the urban physical examination method based on the BIM model provided in this application also includes the following steps:

[0082] P1. If it is determined that the position data has an error in the direction parallel to the irradiation surface, the irradiation surface is used as the reference surface.

[0083] P2, determine the coordinate direction in the position data that is parallel to the reference surface, and determine the coordinate direction with the largest error based on the inverted position and the position data as the error direction;

[0084] P3. The data center is used to determine the inspection surfaces of all building components to be inspected based on the BIM three-dimensional model. The inspection surface is the surface of each building component to be inspected that is perpendicular to the error direction.

[0085] P4. The data center is also used to prompt the physical examination end with the detection surface corresponding to each building component to be detected.

[0086] In this way, the city physical examination personnel can use the detection surface of the building component as the surface pointed by the physical examination end (i.e., the surface illuminated by the light source module) when conducting physical examination of the building component under the prompt information of the detection surface displayed on the physical examination end, and control the physical examination end to be perpendicular to the detection surface when pointing to the detection surface of the building component. In this way, the interference caused by the positioning error in the error direction on the positioning of the building component can be reduced as much as possible.

[0087] In summary, the urban physical examination method based on the BIM model provided in the embodiment of the present invention can realize the automatic association between the physical examination results and the building components 200, effectively reduce the probability of data matching errors, and help to carry out urban physical examination work efficiently and accurately.

[0088] The BIM model-based urban physical examination system provided in the embodiment of the present invention can realize the automatic association between physical examination results and building components 200, effectively reducing the probability of data matching errors, and facilitating the efficient and accurate implementation of urban physical examination work.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A city physical examination method based on BIM model, characterized in that: The steps include: S1. Establish a BIM three-dimensional model of the physical examination object and determine the coordinate data of the physical examination object; S2. Acquire the position data of the physical examination personnel, and mark the position of the physical examination personnel in the BIM three-dimensional model according to the position data, and record it as a physical examination reference point; S3, determining the relative position relationship between the building component to be examined and the examiner, and marking the building component in the BIM three-dimensional model according to the examination reference point and the relative position relationship; S4. Associating the component physical examination result uploaded by the physical examiner with the building component.

2. The urban physical examination method based on the BIM model according to claim 1 is characterized in that: The position data includes: a horizontal coordinate, a vertical coordinate and a height coordinate.

3. A city physical examination system based on BIM model, characterized in that: include: A data center and a physical examination terminal; the data center is used to execute S1 in the urban physical examination method based on the BIM model as described in claim 1 or 2; the physical examination terminal is used by the physical examination personnel in the urban physical examination method based on the BIM model as described in claim 1 or 2; The physical examination terminal has a positioning module, an orientation detection module and a data uploading module; the positioning module is used to obtain the position data in the urban physical examination method based on the BIM model as claimed in claim 1 or 2; The orientation detection module is used to obtain the relative orientation relationship in the urban physical examination method based on the BIM model as claimed in claim 1 or 2; the data uploading module is used for the physical examination personnel in the urban physical examination method based on the BIM model as claimed in claim 1 or 2 to upload the component physical examination results to the data center; The data center is used to determine the physical examination reference point according to the position data, mark the corresponding building component in the BIM three-dimensional model according to the physical examination reference point and the relative orientation relationship, and associate the component physical examination result with the corresponding building component.

4. The urban physical examination system based on the BIM model according to claim 3 is characterized in that: The orientation detection module includes: a gyroscope.

5. The urban physical examination system based on the BIM model according to claim 3 is characterized in that: The physical examination end also has: a laser distance measurement module; The laser distance measuring module is used to detect the distance between the physical examination end and the building component it is facing; The data center is used to determine a projection point according to the physical examination reference point and the relative orientation relationship, and calculate the distance between the projection point and the physical examination reference point, which is recorded as a comparison value; if the comparison value matches the distance value, it is determined that the component physical examination result is correctly associated with the building component; The projection point is: the geometric center point of the projection of the physical examination end on the surface of the building component along the direction of the physical examination end.

6. The urban physical examination system based on the BIM model according to claim 5 is characterized in that: The physical examination end also has: a light source module and a visual module; The light source module and the laser ranging module are arranged in parallel and in the same direction; The visual module is used to obtain image data of the illumination point of the light source module on the surface of the corresponding building component; The data center is used to determine the actual position of the irradiation point on the building component according to the image data, determine the inversion position according to the actual position, the relative orientation relationship and the distance value, and use the inversion position to correct the position data.

7. The urban physical examination system based on the BIM model according to claim 6 is characterized in that: The data center is also used to perform a verification process, which includes the following steps: D1, constructing a line between the actual position and the inversion position as a test line; D2. In the same building, if a certain building component exists at the same position on each floor of the building, a detection area is defined for the building component on one floor; the detection area is the area that the physical examiner needs to enter when performing a physical examination on the building component; D3, projecting the detection area in a horizontal plane, recorded as the projection area; projecting all the inspection lines corresponding to the building component in the horizontal plane, recorded as projection lines; D4. Determine the physical examination standardization, where the physical examination standardization = the sum of the standard reference values ​​of all the projection lines, and the standard reference value = (the length of the projection line within the projection area) / (the square of the total length of the projection line); wherein, the larger the value of the physical examination standardization, the higher the physical examination standardization.

8. The urban physical examination system based on the BIM model according to claim 7 is characterized in that: The surface of the building component where the irradiation point is located is recorded as the irradiation surface. If the contrast value matches the distance value and the inverted position does not match the position data, it is determined that the position data has an error in a direction parallel to the irradiation surface.

9. The urban physical examination system based on the BIM model according to claim 8 is characterized in that: If it is determined that the position data has an error in a direction parallel to the irradiated surface, the irradiated surface is used as a reference surface; Determine a coordinate direction in the position data that is parallel to the reference surface, and determine the coordinate direction with the largest error according to the inverted position and the position data as the error direction; The data center is used to determine the detection surfaces of all building components to be detected according to the BIM three-dimensional model, and the detection surfaces are surfaces of each building component to be detected that are perpendicular to the error direction; The data center is also used to prompt the physical examination end with the detection surface corresponding to each building component to be detected.

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