CN112861401B - Vehicle weight identification method, device, equipment and storage medium based on simulation analysis - Google Patents
Vehicle weight identification method, device, equipment and storage medium based on simulation analysis Download PDFInfo
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- CN112861401B CN112861401B CN202110148347.0A CN202110148347A CN112861401B CN 112861401 B CN112861401 B CN 112861401B CN 202110148347 A CN202110148347 A CN 202110148347A CN 112861401 B CN112861401 B CN 112861401B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
Abstract
The application discloses a vehicle weight identification method, a device, equipment and a computer readable storage medium based on simulation analysis, wherein the method comprises the following steps: acquiring the type, specification, tire pressure and vertical deflection of each tire in a target vehicle; determining a load model corresponding to the tire according to the type of the tire, and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type; and obtaining the weight of the target vehicle according to the load of each tire in the target vehicle. According to the technical scheme, contactless, low-cost and efficient vehicle weight identification is achieved based on the type and specification of the vehicle tire pressure, the tire pressure and the vertical deflection.
Description
Technical Field
The present application relates to the field of vehicle weight measurement technologies, and in particular, to a vehicle weight recognition method, device, apparatus, and computer-readable storage medium based on simulation analysis.
Background
In recent years, with the rapid development of the transportation industry, the problem of vehicle overload emerges endlessly, and an overloaded vehicle can cause serious damage to traffic infrastructures such as roads and bridges, so that the vehicle weight acquisition is concerned more and more, which not only has an important meaning for managing the vehicle overload problem, but also has a great influence on the fields of the establishment of an intelligent transportation system, the maintenance and management of roads and bridges, and the like.
At present, the vehicle weight is usually identified by weighing the weighbridge, dynamically weighing the road surface and dynamically weighing the bridge, but the weighbridge needs to be provided with a special weighing station, so that the traffic is blocked, the efficiency is low, and the cost is higher; the dynamic weighing of the road surface is to install a sensor on the road, the sensor is utilized to measure the dynamic pressure when the wheels pass through to obtain the weight of the vehicle, the installation and maintenance processes need to interrupt traffic and dig the road surface, so that potential traffic safety hazards are generated, and the sensor directly bears the weight of the vehicle, so that the damage to the vehicle is large, the service life is short, the weighing cost is increased, and meanwhile, the influence of the flatness of the road surface on the weighing precision is large due to the short contact time between the vehicle and the sensor; the dynamic weighing of the bridge still needs to install a sensor on the bridge, and the environment of the dynamic weighing of the bridge is complex, so that the sensor is difficult to install, the weighing precision is greatly influenced by the position of the sensor, the dynamic weighing of the bridge is sensitive to the transverse position of a vehicle, and the adaptability is poor.
In summary, how to realize contactless, high-precision and low-cost vehicle weight recognition is a technical problem to be urgently solved by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present application is to provide a method, an apparatus, a device and a computer-readable storage medium for identifying a vehicle weight based on simulation analysis, which are used to achieve contactless, high-precision and low-cost vehicle weight identification.
In order to achieve the above purpose, the present application provides the following technical solutions:
a vehicle weight identification method based on simulation analysis comprises the following steps:
acquiring the type, specification, tire pressure and vertical deflection of each tire in a target vehicle;
determining a load model corresponding to the tire according to the type of the tire, and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire specification, the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type;
and obtaining the weight of the target vehicle according to the load of each tire in the target vehicle.
Preferably, the tire three-dimensional model is a tire three-dimensional finite element model;
the building process of the tire three-dimensional finite element model comprises the following steps:
selecting tires with multiple target specifications from each tire type, and calculating and drawing a tire section sketch of the tire with each target specification corresponding to each tire type according to the parameters of the tire with each target specification corresponding to each tire type;
establishing a tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type in finite element software according to the tire section sketch of the tire of each target specification corresponding to each tire type;
correspondingly, the process of fitting the tire specification, the tire pressure and the vertical deflection to obtain the load model based on the tire three-dimensional model corresponding to the tire type comprises the following steps:
respectively acquiring multiple groups of fitting data for the tires of the target specifications corresponding to each tire type, acquiring the tire load corresponding to each group of fitting data according to the tire three-dimensional finite element model of the tires of the target specifications, and performing multiple regression on the fitting data and the tire load corresponding to the fitting data to correspondingly obtain multiple regression results corresponding to the tires of the target specifications; wherein the fitting data comprises tire pressure and vertical deflection of the tire;
and analyzing the multiple regression results corresponding to the tires of the target specifications by combining the tires of the target specifications corresponding to each tire type to obtain a load model corresponding to the tire type.
Preferably, after the tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type is established in the finite element software, the method further includes:
and comparing the tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type with the real vehicle tire of the corresponding specification under the same working condition, and adjusting the tire three-dimensional finite element model according to the comparison result.
Preferably, obtaining the type, specification and vertical deflection of each tire comprises:
and acquiring a tire image of each tire, and acquiring the type, the specification and the vertical deflection of each tire from the tire image.
Preferably, obtaining the vertical deflection of each of the tires comprises:
and obtaining the vertical deflection of each tire through laser ranging.
Preferably, acquiring the tire pressure of each tire in the target vehicle includes:
and acquiring the tire pressure of each tire by using a tire pressure meter or a pressure sensor arranged in each tire in the target vehicle.
A vehicle weight recognition device based on simulation analysis comprises:
the acquisition module is used for acquiring the type, specification, tire pressure and vertical deflection of each tire in the target vehicle;
the determining module is used for determining a load model corresponding to the tire according to the type of the tire and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire specification, the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type;
and the vehicle weight obtaining module is used for obtaining the weight of the target vehicle according to the load of each tire in the target vehicle.
Preferably, the tire three-dimensional model is a tire three-dimensional finite element model;
the vehicle weight recognition device based on simulation analysis further comprises a modeling module used for establishing a tire three-dimensional finite element model, wherein the modeling module comprises:
the selecting unit is used for selecting tires with various target specifications from each tire type, and calculating and drawing a tire section sketch of the tire with each target specification corresponding to each tire type according to parameters of the tire with each target specification corresponding to each tire type;
the building unit is used for building a tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type in finite element software according to the tire section sketch of the tire of each target specification corresponding to each tire type;
correspondingly, the module for fitting the tire specification, the tire pressure and the vertical deflection of the tire based on the tire three-dimensional model corresponding to the tire type to obtain the load model comprises:
the obtaining unit is used for respectively obtaining multiple groups of fitting data for the tires of the target specifications corresponding to each tire type, obtaining the tire loads corresponding to each group of fitting data according to the tire three-dimensional finite element model of the tires of the target specifications, and performing multiple regression on the fitting data and the tire loads corresponding to the fitting data to correspondingly obtain multiple regression results corresponding to the tires of the target specifications; wherein the fitting data comprises tire pressure and vertical deflection of the tire;
and the fitting unit is used for analyzing the multiple regression results corresponding to the tires of the target specifications by combining the tires of the target specifications corresponding to each tire type to obtain a load model corresponding to the tire type.
A vehicle weight recognition apparatus based on simulation analysis, comprising:
a memory for storing a computer program;
and a processor for implementing the steps of the vehicle weight recognition method based on simulation analysis as described in any one of the above when the computer program is executed.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for identifying a vehicle weight based on simulation analysis as claimed in any one of the preceding claims.
The application provides a vehicle weight identification method, a device, equipment and a computer readable storage medium based on simulation analysis, wherein the method comprises the following steps: acquiring the type, specification, tire pressure and vertical deflection of each tire in a target vehicle; determining a load model corresponding to the tire according to the type of the tire, and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type; and obtaining the weight of the target vehicle according to the load of each tire in the target vehicle.
According to the technical scheme disclosed by the application, the type, the specification, the tire pressure and the vertical deflection of each tire in the target vehicle are obtained, the load model corresponding to each tire is determined according to the type of the tire, wherein the load model of the tire is obtained by fitting the tire pressure and the vertical deflection of the tire based on the pre-established tire three-dimensional model corresponding to the type of the tire, then the load of each tire is obtained according to the specification, the tire pressure, the vertical deflection of each tire and the determined corresponding load model, the weight of the target vehicle is determined based on the load of each tire, compared with the existing method of identifying the vehicle weight by paving a sensor on a road through a wagon balance, the application can realize contactless, low-cost and high-efficiency identification of the vehicle weight based on the tire pressure and the deformation information of the vehicle, and the process is not influenced by the environment where the vehicle is located and the like, so that the precision and the accuracy of the identification of the vehicle weight can be improved, in addition, because the sensor does not need to be laid on the road in the process, the influence on the road and traffic is avoided, and the operation is simple and convenient.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a vehicle weight recognition method based on simulation analysis according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a three-dimensional finite element model of a tire according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a vehicle weight recognition device based on simulation analysis according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a vehicle weight recognition device based on simulation analysis according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the prior art, vehicle weight identification is generally realized in a weighbridge weighing mode, a road dynamic weighing mode and a bridge dynamic weighing mode, but the weighbridge weighing mode needs to be provided with a special weighing station for weighing a vehicle, so that traffic jam can be caused, the measuring efficiency is low, and the measuring cost is high; the dynamic weighing of the road surface needs to interrupt traffic and dig the road surface, a sensor is arranged in the dynamic weighing device, the sensor is used for measuring the pressure when wheels pass through the dynamic weighing device to obtain the weight of a vehicle, when the sensor needs to be maintained, the traffic is still required to be interrupted and the road surface is dug, the traffic is blocked due to the interruption of the traffic, and the digging of the road surface can cause traffic safety to generate hidden dangers; the dynamic weighing of the bridge still needs to install the sensor on the bridge, and because the environment where the bridge is located is more complicated, therefore, the sensor installation is comparatively difficult, and the weighing precision is influenced by the sensor position comparatively big, and the adaptability is relatively poor, and based on this, the application provides a vehicle weight recognition method based on simulation analysis for realize contactless, high accuracy, low-cost vehicle weight recognition.
Specifically, referring to fig. 1, which shows a flowchart of a vehicle weight recognition method based on simulation analysis provided in the embodiment of the present application, a vehicle weight recognition method based on simulation analysis provided in the embodiment of the present application may include:
s11: and obtaining the type, specification, tire pressure and vertical deflection of each tire in the target vehicle.
When the vehicle weight measurement of the target vehicle is required, the type and the specification of each tire in the target vehicle, the current tire pressure and the current vertical deflection of each tire can be obtained firstly.
Wherein the above mentioned types of tires refer to truck tires, car tires, agricultural vehicle tires, industrial vehicle tires, and the like.
S12: determining a load model corresponding to the tire according to the type of the tire, and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type.
And determining load models corresponding to the tires in the target vehicle according to the types of the tires in the target vehicle, and then calculating the load of each tire according to the specification, the tire pressure, the vertical deflection and the determined load models of the tires.
Wherein, the above mentioned load model obtaining process is: the method comprises the steps of establishing tire three-dimensional models corresponding to various tire types in advance, fitting relationships among tire specifications, tire pressures, tire vertical deflection and tire loads based on the tire three-dimensional models corresponding to the tire types respectively to obtain load models corresponding to the tire types respectively, namely taking the tire specifications, the tire pressures and the tire vertical deflection as independent variables, obtaining the tire loads corresponding to the independent variables based on the tire three-dimensional models corresponding to different tire types respectively (namely taking the tire loads as dependent variables), and fitting the relationships between the independent variables and the dependent variables to obtain the tire three-dimensional models corresponding to the tire types.
S13: and obtaining the weight of the target vehicle according to the load of each tire in the target vehicle.
Calculating the load of each tire in a target vehicleAfter loading, can utilize
Calculating the weight of the target vehicle, wherein W is the weight of the target vehicle, i is the number of each tire in the target vehicle, i is 1,2,3iThe load of the ith tire in the target vehicle.
According to the process, the weight of the vehicle can be obtained automatically, contactlessly, at low cost and efficiently only by means of the type, the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire in the vehicle, and the process is realized by laying a sensor in a road or going to a special weighing station without interrupting traffic, so that the influence on the traffic is avoided, the road is not greatly influenced, and the potential safety hazard can be reduced.
According to the technical scheme disclosed by the application, the type, the specification, the tire pressure and the vertical deflection of each tire in the target vehicle are obtained, the load model corresponding to each tire is determined according to the type of the tire, wherein the load model of the tire is obtained by fitting the tire pressure and the vertical deflection of the tire based on the pre-established tire three-dimensional model corresponding to the type of the tire, then the load of each tire is obtained according to the specification, the tire pressure, the vertical deflection of each tire and the determined corresponding load model, the weight of the target vehicle is determined based on the load of each tire, compared with the existing method of identifying the vehicle weight by paving a sensor on a road through a wagon balance, the application can realize contactless, low-cost and high-efficiency identification of the vehicle weight based on the tire pressure and the deformation information of the vehicle, and the process is not influenced by the environment where the vehicle is located and the like, so that the precision and the accuracy of the identification of the vehicle weight can be improved, in addition, because the sensor does not need to be laid on the road in the process, the influence on the road and traffic is avoided, and the operation is simple and convenient.
According to the vehicle weight identification method based on simulation analysis, a tire three-dimensional model is a tire three-dimensional finite element model;
the building process of the tire three-dimensional finite element model can comprise the following steps:
selecting tires with various target specifications from each tire type, and calculating and drawing a tire section sketch of the tire with each target specification corresponding to each tire type according to the parameters of the tire with each target specification corresponding to each tire type;
establishing a tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type in finite element software according to the tire section sketch of the tire of each target specification corresponding to each tire type;
correspondingly, the process of fitting the tire specification, the tire pressure and the vertical deflection to obtain the load model based on the tire three-dimensional model corresponding to the tire type comprises the following steps of:
respectively acquiring multiple groups of fitting data for the tires of each target specification corresponding to each tire type, acquiring the tire load corresponding to each group of fitting data according to the tire three-dimensional finite element model of the tires of the target specification, and performing multiple regression on the fitting data and the tire load corresponding to the fitting data to correspondingly obtain multiple regression results corresponding to the tires of each target specification; the fitting data comprises tire pressure and tire vertical deflection;
and analyzing the multiple regression results corresponding to the tires with the target specifications by combining the tires with the target specifications corresponding to each tire type to obtain a load model corresponding to the tire type.
In the present application, the tire three-dimensional model for obtaining the load model may specifically be a tire three-dimensional finite element model, and the building steps of the model are as follows: specifically, for each tire type, tires with multiple target specifications can be selected, wherein the specifications of the tires with the user utilization ratio ranks in the first few positions in the tire type can be determined as the target specifications, and of course, the target specifications can also be determined according to other modes, which is not limited in this application. For each tire type, after tires with various target specifications are selected, for the tire with each target specification, calculating and drawing a tire section sketch according to known parameters of the tire with each target specification, establishing a tire three-dimensional finite element model in finite element software according to the tire section sketch, specifically assembling the tire section sketch and a rim geometric model to obtain a tire model, and after the tire model is subjected to grid division, giving corresponding unit attributes to different material components, namely obtaining the tire three-dimensional finite element models of the tires with each target specification respectively.
Taking 225/65R17 radial tires as an example, the building process of the tire three-dimensional finite element model specifically comprises the following steps: the method comprises the steps of carrying out simulation analysis by using 225/65R17 radial tires, calculating and drawing tire section sketches (comprising rubber matrixes, cord layers and belt layers) according to design parameters of 225/65R17 radial tires in tire specifications, assembling the rubber matrixes, the cord layers, the belt layers and a rim geometric model to obtain a tire model, carrying out grid division on the tire model, endowing different material components with corresponding unit attributes, and finally obtaining the tire three-dimensional finite element model as shown in FIG. 2, wherein the diagram shows the tire three-dimensional finite element model provided by the embodiment of the application.
The tire three-dimensional finite element model is more convenient to establish, and the established tire three-dimensional finite element model is more real, so that the established model can be closer to a real tire with the target specification, a load model with higher accuracy can be obtained conveniently, and the accuracy of vehicle weight identification can be improved conveniently.
After building the tire three-dimensional finite element model of the tire with each target specification in each tire type, correspondingly, the process of fitting the tire specification, the tire pressure and the vertical deflection based on the tire three-dimensional model corresponding to the tire type to obtain the load model is specifically as follows:
for the tires of each target specification corresponding to each tire type, multiple groups of fitting data can be respectively obtained, namely, the tires of each target specification can correspond to multiple groups of fitting data, wherein each group of fitting data comprises tire pressure and tire vertical deflection. Then, the tire load corresponding to each set of fitting data can be obtained based on the three-dimensional finite element model of the tire with the target specification, and then, how far regression is performed on the fitting data corresponding to the tire with each target specification and the tire load corresponding to the fitting data, so as to correspondingly obtain a multiple regression result corresponding to the tire with each target specification.
After obtaining the multiple regression results corresponding to the tires of each target specification, for each tire type, analyzing the multiple regression results corresponding to the tires of each target specification in combination with the tires of each target specification corresponding to the tire type to obtain a load model corresponding to each tire type, wherein the load model corresponding to each tire type can be applied to the tires of each specification in the tire type. Taking car tires and truck tires as examples, analyzing the multiple regression results corresponding to the tires of each target specification in the car tires by combining the tires of each target specification, and obtaining a load model corresponding to the car tires as follows:
F＝αβγ700P0.7δ
wherein, alpha is 3.25-0.037B, beta is 0.3+0.05R, and gamma is 1.01δ-10B is the tire flat ratio in units of percent, R is the rim diameter in units of inches, gamma is the deformation influence coefficient, delta is the vertical deflection in units of mm, P is the tire pressure in units of mPa, alpha and beta represent the tire specification, and F is the load.
For the truck tire, the multiple regression results corresponding to the tires of all target specifications in the truck tire are analyzed by combining the tires of all target specifications in the truck tire, and the load model corresponding to the truck tire is obtained as follows:
F＝γ1250αP0.7δ
wherein when is delta<At 20mm, gamma is 1.03δ-20When delta is not less than 20mm, gamma is 1, wherein F, gamma, P and delta have the same meanings as described above, and are not redundant hereWhere α is a parameter related to the tire specification in the truck tire, see table 1 for details showing the relationship between the tire specification in the truck tire and α:
TABLE 1 relationship between tire specifications and α in truck tires
After the method for identifying the vehicle weight based on the simulation analysis is used for establishing the tire three-dimensional finite element models of the tires with the target specifications corresponding to the tire types in the finite element software, the method further comprises the following steps:
and comparing the tire three-dimensional finite element model of the tire with each target specification corresponding to each tire type with the real vehicle tire with the corresponding specification under the same working condition, and adjusting the tire three-dimensional finite element model according to the comparison result.
After building a tire three-dimensional finite element model of a tire of each target specification corresponding to each tire type in finite element software, the tire three-dimensional finite element model of the tire with each target specification corresponding to each tire type and the real vehicle tire (namely, the tire which is installed on the vehicle and is actually measured on site) with the corresponding specification can be subjected to multiple groups of loading tests under the same working condition to obtain the footprint of the tire three-dimensional finite element model and the real vehicle tire with the corresponding specification, comparing the contact area, the contact length and the contact width of the tire and the ground in the footprint, adjusting the three-dimensional finite element model of the tire according to the comparison result, so that the three-dimensional finite element model of the tire is close to the multiple groups of comparison results of the real tire with the corresponding specification, and at the moment, the correctness of the three-dimensional finite element model of the tire can be determined and the determined correct three-dimensional finite element model of the tire is used for obtaining the load model.
Through the process, the determined tire three-dimensional finite element model is closer to the real tire with the corresponding specification, so that the accuracy and precision of the load model acquisition are improved, and the accuracy and precision of the vehicle weight identification are improved.
The vehicle weight identification method based on simulation analysis provided by the embodiment of the application obtains the type, specification and vertical deflection of each tire, and can comprise the following steps:
and acquiring a tire image of each tire, and acquiring the type, the specification and the vertical deflection of each tire from the tire image.
In the application, a tire image of each tire can be specifically obtained, and the type, specification and vertical deflection of each tire are obtained from the tire image, wherein for the vertical deflection of the tire, the method can be adopted to obtain a scale factor, the tire outer diameter is obtained from the tire image, the tire outer diameter is divided by the scale factor to obtain the number of pixels contained on the tire outer diameter, a marking circle is drawn by taking the rim center as the center of a circle and the number of pixels contained on the tire outer diameter as the diameter, the number of pixels between the lowest point of the marking circle and the lowest point of the tire in the tire image is obtained, and the number of pixels is multiplied by the scale factor to obtain the vertical deflection of the tire.
Specifically, the tire image may be acquired as follows: cameras are provided in advance on the side of a road on which the vehicle is running (specifically, cameras are provided at lower positions on the side and specifically, cameras are provided on both sides of the road), and tires of the vehicle are photographed by the provided cameras to acquire tire images of the respective tires.
The type, specification and vertical deflection of the tire can be automatically and contactlessly acquired by utilizing the tire image through the process, so that the efficiency and the accuracy of vehicle weight identification are conveniently improved.
The method for identifying the vehicle weight based on the simulation analysis, provided by the embodiment of the application, can be used for acquiring the vertical deflection of each tire, and can comprise the following steps:
and obtaining the vertical deflection of each tire through laser ranging.
In this application, except that the vertical deflection of tire is acquireed through the tire image, can also acquire the vertical deflection of each tire through the mode of laser rangefinder, this acquisition mode is simple, convenient, swift.
The vehicle weight identification method based on simulation analysis provided by the embodiment of the application can obtain the tire pressure of each tire in the target vehicle, and can include the following steps:
the tire pressure of each tire is acquired by a tire pressure gauge or a pressure sensor provided inside each tire in the target vehicle.
In the present application, the tire pressure of each tire may be acquired specifically by using a tire pressure meter or a pressure sensor provided inside each tire in the target vehicle, so as to improve the convenience of tire pressure acquisition.
The embodiment of the present application further provides a vehicle weight recognition device based on simulation analysis, refer to fig. 3, which shows a schematic structural diagram of the vehicle weight recognition device based on simulation analysis provided in the embodiment of the present application, and the vehicle weight recognition device based on simulation analysis may include:
the acquiring module 31 is used for acquiring the type, specification, tire pressure and vertical deflection of each tire in the target vehicle;
the input module 32 is configured to determine a load model corresponding to the tire according to the type of the tire, and obtain a load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire specification, the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type;
the get vehicle weight module 33 is configured to get the weight of the target vehicle according to the load of each tire in the target vehicle.
According to the vehicle weight recognition device based on simulation analysis, a tire three-dimensional model is a tire three-dimensional finite element model;
the vehicle weight recognition device based on simulation analysis comprises a modeling module used for establishing a tire three-dimensional finite element module, wherein the modeling module comprises:
the selecting unit is used for selecting tires with various target specifications from each tire type, and calculating and drawing a tire section sketch of the tire with each target specification corresponding to each tire type according to the parameters of the tire with each target specification corresponding to each tire type;
the building unit is used for building a tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type in finite element software according to the tire section sketch of the tire of each target specification corresponding to each tire type;
accordingly, the module for fitting the tire specification, the tire pressure and the vertical deflection of the tire based on the tire three-dimensional model corresponding to the tire type to obtain the load model may include:
the acquiring unit is used for respectively acquiring multiple groups of fitting data for the tires of each target specification corresponding to each tire type, acquiring the tire load corresponding to each group of fitting data according to the tire three-dimensional finite element model of the tires of the target specification, and performing multiple regression on the fitting data and the tire load corresponding to the fitting data to correspondingly obtain multiple regression results corresponding to the tires of each target specification; the fitting data comprises tire pressure and tire vertical deflection;
and the fitting unit is used for analyzing the multiple regression results corresponding to the tires with the target specifications by combining the tires with the target specifications corresponding to each tire type to obtain a load model corresponding to the tire type.
According to the vehicle weight recognition device based on simulation analysis, the modeling module can further comprise:
and the comparison unit is used for comparing the tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type with the real vehicle tire of the corresponding specification under the same working condition after establishing the tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type in the finite element software, and adjusting the tire three-dimensional finite element model according to the comparison result.
The vehicle weight recognition device based on simulation analysis provided by the embodiment of the application, the obtaining module 31 may include:
the first acquisition unit is used for acquiring a tire image of each tire, and acquiring the type, the specification and the vertical deflection of each tire from the tire image.
The vehicle weight recognition device based on simulation analysis provided by the embodiment of the application, the obtaining module 31 may include:
and the second acquisition unit is used for acquiring the vertical deflection of each tire through laser ranging.
The vehicle weight recognition device based on simulation analysis provided by the embodiment of the application, the obtaining module 31 may include:
and a third acquisition unit for acquiring the tire pressure of each tire by using a tire pressure meter or a pressure sensor provided inside each tire in the target vehicle.
The embodiment of the present application further provides a vehicle weight recognition device based on simulation analysis, refer to fig. 4, which shows a schematic structural diagram of the vehicle weight recognition device based on simulation analysis, and the vehicle weight recognition device based on simulation analysis provided in the embodiment of the present application may include:
a memory 41 for storing a computer program;
the processor 42, when executing the computer program stored in the memory 41, may implement the following steps:
acquiring the type, specification, tire pressure and vertical deflection of each tire in a target vehicle; determining a load model corresponding to the tire according to the type of the tire, and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type; and obtaining the weight of the target vehicle according to the load of each tire in the target vehicle.
An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the following steps may be implemented:
acquiring the type, specification, tire pressure and vertical deflection of each tire in a target vehicle; determining a load model corresponding to the tire according to the type of the tire, and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type; and obtaining the weight of the target vehicle according to the load of each tire in the target vehicle.
The computer-readable storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
For a description of relevant parts in the vehicle weight recognition device, the equipment and the computer-readable storage medium based on the simulation analysis provided in the embodiment of the present application, reference may be made to the detailed description of the corresponding parts in the vehicle weight recognition method based on the simulation analysis provided in the embodiment of the present application, and details are not repeated here.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A vehicle weight identification method based on simulation analysis is characterized by comprising
Acquiring the type, specification, tire pressure and vertical deflection of each tire in a target vehicle;
determining a load model corresponding to the tire according to the type of the tire, and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire specification, the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type;
obtaining the weight of the target vehicle according to the load of each tire in the target vehicle;
wherein, the process of establishing the tire three-dimensional finite element model comprises the following steps:
selecting tires with multiple target specifications from each tire type, and calculating and drawing a tire section sketch of the tire with each target specification corresponding to each tire type according to the parameters of the tire with each target specification corresponding to each tire type;
establishing a tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type in finite element software according to the tire section sketch of the tire of each target specification corresponding to each tire type;
correspondingly, the process of fitting the tire specification, the tire pressure and the vertical deflection to obtain the load model based on the tire three-dimensional model corresponding to the tire type comprises the following steps:
respectively acquiring multiple groups of fitting data for the tires of the target specifications corresponding to each tire type, acquiring the tire load corresponding to each group of fitting data according to the tire three-dimensional finite element model of the tires of the target specifications, and performing multiple regression on the fitting data and the tire load corresponding to the fitting data to correspondingly obtain multiple regression results corresponding to the tires of the target specifications; wherein the fitting data comprises tire pressure and vertical deflection of the tire;
and analyzing the multiple regression results corresponding to the tires of the target specifications by combining the tires of the target specifications corresponding to each tire type to obtain a load model corresponding to the tire type.
2. The simulation analysis-based vehicle weight recognition method according to claim 1, wherein after building a tire three-dimensional finite element model of each tire of the target specification corresponding to each tire type in finite element software, the method further comprises:
and comparing the tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type with the real vehicle tire of the corresponding specification under the same working condition, and adjusting the tire three-dimensional finite element model according to the comparison result.
3. The simulation analysis-based vehicle weight identification method according to claim 1, wherein the obtaining of the type, specification and vertical deflection of each tire comprises:
and acquiring a tire image of each tire, and acquiring the type, the specification and the vertical deflection of each tire from the tire image.
4. The simulation analysis-based vehicle weight recognition method according to claim 1, wherein the obtaining of the vertical deflection of each tire comprises:
and obtaining the vertical deflection of each tire through laser ranging.
5. The vehicle weight identification method based on simulation analysis according to claim 1, wherein the obtaining of the tire pressure of each tire in the target vehicle comprises:
and acquiring the tire pressure of each tire by using a tire pressure meter or a pressure sensor arranged in each tire in the target vehicle.
6. A vehicle weight recognition device based on simulation analysis is characterized by comprising:
the acquisition module is used for acquiring the type, specification, tire pressure and vertical deflection of each tire in the target vehicle;
the determining module is used for determining a load model corresponding to the tire according to the type of the tire and obtaining the load of each tire according to the specification, the tire pressure, the vertical deflection and the corresponding load model of each tire; the load model is obtained by fitting the tire specification, the tire pressure and the vertical deflection of the tire based on a pre-established tire three-dimensional model corresponding to the tire type;
the vehicle weight obtaining module is used for obtaining the weight of the target vehicle according to the load of each tire in the target vehicle;
wherein, the vehicle weight recognition device based on simulation analysis further comprises a modeling module used for establishing a tire three-dimensional finite element model, and the modeling module comprises:
the selecting unit is used for selecting tires with various target specifications from each tire type, and calculating and drawing a tire section sketch of the tire with each target specification corresponding to each tire type according to parameters of the tire with each target specification corresponding to each tire type;
the building unit is used for building a tire three-dimensional finite element model of the tire of each target specification corresponding to each tire type in finite element software according to the tire section sketch of the tire of each target specification corresponding to each tire type;
correspondingly, the module for fitting the tire specification, the tire pressure and the vertical deflection of the tire based on the tire three-dimensional model corresponding to the tire type to obtain the load model comprises:
the obtaining unit is used for respectively obtaining multiple groups of fitting data for the tires of the target specifications corresponding to each tire type, obtaining the tire loads corresponding to each group of fitting data according to the tire three-dimensional finite element model of the tires of the target specifications, and performing multiple regression on the fitting data and the tire loads corresponding to the fitting data to correspondingly obtain multiple regression results corresponding to the tires of the target specifications; wherein the fitting data comprises tire pressure and vertical deflection of the tire;
and the fitting unit is used for analyzing the multiple regression results corresponding to the tires of the target specifications by combining the tires of the target specifications corresponding to each tire type to obtain a load model corresponding to the tire type.
7. A vehicle weight recognition device based on simulation analysis is characterized by comprising:
a memory for storing a computer program;
a processor for implementing the steps of the simulation analysis based vehicle weight identification method according to any one of claims 1 to 5 when executing the computer program.
8. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the simulation analysis based vehicle weight recognition method according to any one of claims 1 to 5.
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