CN111062077A - Method for anti-dazzle facility height verification by using three-dimensional model - Google Patents
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Abstract
The invention relates to a method for carrying out anti-dazzle facility height verification by utilizing a three-dimensional model, which comprises the following steps: s1) preparing data: the data comprises design patterns of roads, bridges and anti-dazzle facilities; a band-shaped topographic pattern; orthoimage data; s2) determining the modeling criteria: s3) modeling the data arranged according to S1); s4) animation simulation: s5), and then performing the steps S1) -S4) until no light band of the object lane appears in the visual field. The method of the invention checks and perfects the anti-dazzle height of the vertical curve section to obtain the anti-dazzle road data and ensure the driving safety at night.
Description
Technical Field
The invention relates to a method for carrying out anti-dazzle facility height verification by utilizing a three-dimensional model.
Background
The glare phenomenon on the highway at night can cause short-term visual disability of a driver, and very adverse effects are generated on judgment and operation of the driver, so that serious traffic accidents are caused.
And the glare problem on the highway at night is mainly generated on the vertical curve section of the highway. In the vertical curve section of the highway, the height of an anti-dazzle facility (a partition board between opposite roads or a facility for blocking plants and the like) needs to be calculated by considering the influence factors such as the radius of the vertical curve, a longitudinal slope, a road arch or superelevation and the like.
Especially for the concave vertical curve road section, the height change value of the vertical curve at the anti-dazzle facility is properly increased according to the factors of the radius of the vertical curve, the longitudinal slope, the transverse slope and the like.
The high-level road section of the convex vertical curve road section can generate glare to a driver driving oppositely at a low-level road section, even if the distance between the high-level road section and the low-level road section exceeds the theoretical illumination range of the high beam, the driver can also see a strong light source of the high beam of the headlamp of the opposite vehicle due to the reason of ascending and descending slopes, and if the traffic volume is large, continuous glare illumination can be generated, so that great potential safety hazards exist.
Therefore, the anti-dazzle height of the vertical curve road section needs to be checked and perfected, and the driving safety at night is ensured.
Disclosure of Invention
The invention aims to provide a method for verifying the height of an anti-dazzle facility by using a three-dimensional model, which is used for verifying and perfecting the anti-dazzle height of a vertical curve section to obtain anti-dazzle road data and ensure the driving safety at night.
In order to achieve the above purpose, the invention adopts the technical scheme that: a method for performing anti-glare facility height verification using a three-dimensional model, comprising the steps of:
s1) preparing data: the data comprises design patterns of roads, bridges and anti-dazzle facilities; a band-shaped topographic pattern; orthoimage data;
s2) determining the modeling criteria:
s2.1) inputting the prepared data into BIM modeling software, and displaying the data by model processing and animation simulation software;
s2.2) adopting a 1985 national elevation system and a Western Ann coordinate system in BIM modeling design;
s2.3) designing all models by BIM modeling, wherein meters are used as project units, and the effective digit is three bits;
s2.4) the modeling precision adopts the G4 precision requirement in the building information model design delivery standard (GB/T51301-;
s2.5) the BIM model established by the method comprises the following data: road pavement data, anti-collision guardrail data, road central anti-dazzle facility data, road central anti-dazzle greening data, road sign data and road two-side ground data;
s3) modeling the data arranged according to S1);
s3.1) establishing a road and terrain model in road BIM modeling software, comprising the following steps:
s3.1a) establishing a terrain curved surface: reading the elevation points of the banded topographic map to generate a topographic curved surface;
s3.1b) establishing a road main body model: modeling according to parameters of road cross sections, longitudinal sections, road planes and road positions in a design drawing, wherein a road main body model comprises a road center line;
s3.1c) establishing an anti-dazzle facility model: establishing anti-dazzle facilities and traffic sign label models according to the size and the position in the design drawing;
s3.2) exporting the model in the S3.1) and importing the model into model processing and animation simulation software:
s3.2a), correcting the material and texture of the model in model processing and animation simulation software, and pasting an orthographic image map on a terrain curved surface;
s3.2b), establishing a vehicle model, and simulating a view angle of a typical vehicle type;
s3.2c), deviating the center line of the road to an opposite lane to form a deviation line, sweeping the deviation line and endowing the deviation line with a luminous material to simulate a light band formed by opposite headlights, wherein the height of the light band from the ground is set according to the height of the large headlights;
s4) animation simulation:
s4.1) setting a path animation for the camera and the vehicle model by taking the center line of the road as a path, and ensuring that the vehicle track is in the middle of an inner lane;
s4.2) simulating the night environment, and setting the visible range of the camera to the light band to be 120 m;
s4.3) setting rendering animation, and checking whether an optical band of the object lane appears in the visual field range; if not, the height of the anti-dazzle facility meets the anti-dazzle requirement, otherwise, the height of the anti-dazzle facility is too low, and S5 is carried out);
s5), and then the steps S1) to S4) are carried out until no light band of the opposite lane appears in the visual field.
Further, after step S4) or S5), the steps of:
s6) outcome data output:
submitting BIM application result data through anti-dazzle simulation; the result data comprises result file data, video file data and inspection report data.
Further, in the vehicle model in the step S3), the vehicle sight line and the headlight light height are sequentially simulated according to a plurality of height values from horizontal irradiation to vertical irradiation.
Furthermore, BIM modeling software adopts Hongyouyi 2018; the model processing and animation simulation software is Autodesk3DS MAX.
Still further, the road surface data in the step S2) includes four data of a road position, a road plane, a road longitudinal section and a road cross section; the anti-collision guardrail data comprises two data of the height and the position of the anti-collision guardrail; the road central anti-dazzle facility data comprises height and position data of anti-dazzle partition plates between opposite roads; the road central anti-dazzle greening data comprises height and position data of green plants between opposite roads; the road sign data comprises height and position data of the road sign; the road surface data on both sides of the road includes topographic relief data on the opposite road.
More preferably, the height in step S3.2c) is 80-100 cm.
The invention has the technical effects that: the method of the invention checks and perfects the anti-dazzle height of the vertical curve section to obtain the anti-dazzle road data and ensure the driving safety at night.
Drawings
FIG. 1 is a schematic diagram of glare on a vertical curved road segment as described in the background of the invention;
fig. 2 is a flow chart of the one-time anti-glare simulation of the present invention.
Detailed Description
Referring to the attached drawings, the invention establishes three-dimensional models of roads, bridges and anti-dazzle facilities through a BIM (building information model), establishes corresponding materials and attributes in the three-dimensional models, simulates the effect of the anti-dazzle facilities when vehicles are in different lanes, different heights and different positions, checks and perfects the anti-dazzle height of the road section, obtains road data needing anti-dazzle and ensures the driving safety at night.
1) Preparing data: design patterns of roads, bridges and anti-dazzle facilities; a band-shaped topographic pattern; ortho-image data (i.e., data that is ortho-from top to bottom simulating terrain).
2) Modeling roads, bridges and anti-dazzle facilities according to a design drawing;
3) the vehicle sight line and the height of the headlight light are sequentially simulated by taking a plurality of sections of height values from horizontal irradiation to vertical irradiation.
Modeling standard:
1) inputting the prepared data into BIM modeling software, and displaying the data by model processing and animation simulation software;
preferably, BIM modeling software adopts Hongyouyi 2018, and model processing and animation simulation software is Autodesk3DS MAX;
2) the 1985 national elevation system and the Western's coordinate system are adopted in the BIM modeling design;
3) all models of BIM modeling design should use meter as a project unit, and the effective digit is three digits;
4) the modeling precision adopts the G4 precision requirement in the building information model design delivery standard (GB/T51301-2018).
5) The built BIM model at least comprises the following data: road pavement data (specifically, four data of a road position, a road plane, a road longitudinal section and a road cross section), crash barrier data (a crash barrier height and a position), road central anti-glare facility data (a height and a position of an anti-glare partition plate between opposite roads), road central anti-glare greening data (a height and a position of green plants between opposite roads), road sign data (a height and a position of a road sign), and road surface data on two sides of a road (topographic relief data of opposite roads).
The anti-dazzle facility comprises a traffic safety facility (called as traffic safety facility for short); the traffic safety facilities comprise anti-collision guardrails, road central anti-dazzle facilities and road central anti-dazzle greening; the road sign and the traffic sign.
The applicant shows here that the modeled roads are all given anti-glare facility lengths to match roads, bridges, i.e. the modeled lengths of the anti-glare facilities are also determined.
The modeling method comprises the following steps:
1) the method for establishing the road and terrain models in the BIM modeling software of the road comprises the following steps:
1a) establishing a terrain curved surface: reading the elevation points of the banded topographic map to generate a topographic curved surface;
1b) establishing a road body model: modeling according to road cross section, longitudinal slope (longitudinal section), road plane and road position parameters in a design drawing, wherein a road main body model comprises a road central line (a middle line between opposite roads);
1c) establishing an anti-dazzle facility model: and establishing anti-dazzle facilities and traffic sign plate models according to the sizes and positions in the design drawing.
2) The aforementioned model is exported in FBX format and imported into 3dsmax (model processing and animation simulation software):
2a) correcting the material and texture of the model in 3dsmax, and pasting the orthographic image map on the terrain curved surface;
2b) building a cart model and a trolley model (vehicle model) to simulate the view angle of a typical vehicle model;
2c) shifting the center line of the road to the opposite lane to form a shift line, sweeping by using the shift line and endowing the shift line with a luminous material, simulating a light band formed by the opposite headlights, wherein the height of the light band from the ground is set according to the height of the large headlights;
preferably, this height is 80-100 cm.
And (3) animation simulation:
1) setting a path animation for the camera and the vehicle model by taking the central line of the road as a path, and ensuring that the track of the vehicle is in the middle of an inner lane so as to simulate the worst viewing angle;
2) simulating night environment, and setting the visible range of the camera to the light band to be 120 m;
3) rendering the animation according to the setting, and checking whether an optical band of the object lane appears in the visual field range; if not, the height of the anti-dazzle facility meets the anti-dazzle requirement, otherwise, the height of the anti-dazzle facility is too low, and optimization is required (the parameters are adjusted, and the steps are carried out).
And (4) outcome data output:
the anti-dazzle simulation submits BIM application result data (including result file data, video file data and inspection report data).
Claims (6)
1. A method for anti-dazzle facility height verification by using a three-dimensional model is characterized by comprising the following steps: the method comprises the following steps:
s1) preparing data: the data comprises design patterns of roads, bridges and anti-dazzle facilities; a band-shaped topographic pattern; orthoimage data;
s2) determining the modeling criteria:
s2.1) inputting the prepared data into BIM modeling software, and displaying the data by model processing and animation simulation software;
s2.2) adopting a 1985 national elevation system and a Western Ann coordinate system in BIM modeling design;
s2.3) designing all models by BIM modeling, wherein meters are used as project units, and the effective digit is three bits;
s2.4) the modeling precision adopts the G4 precision requirement in the building information model design delivery standard (GB/T51301-;
s2.5) the BIM model established by the method comprises the following data: road pavement data, anti-collision guardrail data, road central anti-dazzle facility data, road central anti-dazzle greening data, road sign data and road two-side ground data;
s3) modeling the data arranged according to S1);
s3.1) establishing a road and terrain model in road BIM modeling software, comprising the following steps:
s3.1a) establishing a terrain curved surface: reading the elevation points of the banded topographic map to generate a topographic curved surface;
s3.1b) establishing a road main body model: modeling according to parameters of road cross sections, longitudinal sections, road planes and road positions in a design drawing, wherein a road main body model comprises a road center line;
s3.1c) establishing an anti-dazzle facility model: establishing anti-dazzle facilities and traffic sign label models according to the size and the position in the design drawing;
s3.2) exporting the model in the S3.1) and importing the model into model processing and animation simulation software:
s3.2a), correcting the material and texture of the model in model processing and animation simulation software, and pasting an orthographic image map on a terrain curved surface;
s3.2b), establishing a vehicle model, and simulating a view angle of a typical vehicle type;
s3.2c), deviating the center line of the road to an opposite lane to form a deviation line, sweeping the deviation line and endowing the deviation line with a luminous material to simulate a light band formed by opposite headlights, wherein the height of the light band from the ground is set according to the height of the large headlights;
s4) animation simulation:
s4.1) setting a path animation for the camera and the vehicle model by taking the center line of the road as a path, and ensuring that the vehicle track is in the middle of an inner lane;
s4.2) simulating the night environment, and setting the visible range of the camera to the light band to be 120 m;
s4.3) setting rendering animation, and checking whether an optical band of the object lane appears in the visual field range; if not, the height of the anti-dazzle facility meets the anti-dazzle requirement, otherwise, the height of the anti-dazzle facility is too low, and S5 is carried out);
s5), and then the steps S1) to S4) are carried out until no light band of the opposite lane appears in the visual field.
2. The method for anti-glare facility height verification using a three-dimensional model according to claim 1, wherein: step S4) or S5) is followed by the steps of:
s6) outcome data output:
submitting BIM application result data through anti-dazzle simulation; the result data comprises result file data, video file data and inspection report data.
3. The method for anti-glare facility height verification using a three-dimensional model according to claim 1 or 2, wherein: s3), sequentially simulating the vehicle sight line and the headlight light height in the vehicle model in the step from horizontal irradiation to vertical irradiation by taking multiple sections of height values.
4. The method for anti-glare facility height verification using a three-dimensional model according to claim 1 or 2, wherein: BIM modeling software adopts Hongyouyi 2018; the model processing and animation simulation software is Autodesk3DS MAX.
5. The method for anti-glare facility height verification using a three-dimensional model according to claim 1 or 2, wherein: s2), the road surface data in the step comprise four data of road position, road plane, road longitudinal section and road cross section; the anti-collision guardrail data comprises two data of the height and the position of the anti-collision guardrail; the road central anti-dazzle facility data comprises height and position data of anti-dazzle partition plates between opposite roads; the road central anti-dazzle greening data comprises height and position data of green plants between opposite roads; the road sign data comprises height and position data of the road sign; the road surface data on both sides of the road includes topographic relief data on the opposite road.
6. The method for anti-glare facility height verification using a three-dimensional model according to claim 1, wherein: and S3.2c) the height in the step is 80-100 cm.
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