CN112406888B - Automobile weight calculation method and related device - Google Patents
Automobile weight calculation method and related device Download PDFInfo
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- CN112406888B CN112406888B CN202011184156.1A CN202011184156A CN112406888B CN 112406888 B CN112406888 B CN 112406888B CN 202011184156 A CN202011184156 A CN 202011184156A CN 112406888 B CN112406888 B CN 112406888B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/12—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to parameters of the vehicle itself, e.g. tyre models
- B60W40/13—Load or weight
Abstract
The embodiment of the application discloses a method for calculating the weight of an automobile. The method comprises the following steps: acquiring a second traction force, a second resistance force, a second rotating speed, a second vehicle speed and a second torque of the target vehicle; determining a first vehicle weight according to the second traction force, the second resistance, a second average value, acceleration and a resistance increase coefficient, wherein the second average value comprises an average value of a second rotating speed, a second vehicle speed and a second torque, and the acceleration is determined according to the second vehicle speed; determining a second vehicle weight, wherein the second vehicle weight is the average vehicle weight of the first vehicle weight within a first preset number of times; determining a third vehicle weight, wherein the third vehicle weight is the average vehicle weight of the first vehicle weight within a second preset number of times; when the difference value between the second vehicle weight and the third vehicle weight meets a third preset condition, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as the target vehicle weight; and when the difference value does not meet a third preset condition, determining that the second vehicle weight is the target vehicle weight. Therefore, the accuracy of the vehicle weight data is effectively improved by calculating and averaging for multiple times.
Description
Technical Field
The embodiment of the application relates to the field of automobile weight data processing, in particular to an automobile weight calculating method and a related device.
Background
With the rapid development of the transportation industry in the modern society, many operating vehicles increase profits by increasing the quantity or weight of goods carried, and the operating cost of each vehicle is reduced. The overloading of the vehicle may cause a series of serious problems such as traffic safety accidents, road surface damage and increased emission pollution, and therefore, the weight of the vehicle needs to be monitored to avoid the overloading phenomenon.
In the prior art, at present, vehicle weight measuring equipment such as a middle scale or a disc type weighing instrument and the like must use fixed equipment at a fixed place to measure a vehicle. Therefore, it is partially adopted to install a deformation sensor at a vehicle suspension, but the accuracy of the deformation sensor is greatly affected by the jolt of the road surface when the vehicle runs, so that the calculated data about the weight of the vehicle is inaccurate.
Disclosure of Invention
The embodiment of the application provides an automobile weight calculating method and a related device, which are used for effectively improving the accuracy of automobile weight data.
The embodiment of the application provides a method for calculating the weight of an automobile in a first aspect, which comprises the following steps:
acquiring a second traction force, a second resistance force, a second rotating speed, a second vehicle speed and a second torque of the target vehicle;
determining a first vehicle weight based on the second tractive effort, the second resistance, a second average, an acceleration, and a resistance increase factor, the second average comprising an average of the second speed, and the second torque, the acceleration determined based on the second speed;
determining a second vehicle weight, wherein the second vehicle weight is an average vehicle weight of the first vehicle weight within a first preset number of times;
determining a third vehicle weight, wherein the third vehicle weight is the average vehicle weight of the first vehicle weight within a second preset number of times;
when the difference value between the second vehicle weight and the third vehicle weight meets a third preset condition, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
and when the difference value does not meet a third preset condition, determining that the second vehicle weight is the target vehicle weight.
Optionally, before the obtaining the second traction force, the second resistance force, the second rotation speed, the second vehicle speed, and the second torque of the target vehicle, the method further comprises:
obtaining a first traction force and a first resistance force of the target vehicle, the first resistance force comprising a first wind resistance force and a first tire rolling resistance force;
determining a second resistance based on the first average of the target vehicle, the first tractive effort, and the first resistance.
Optionally, before determining a second resistance force based on the first average value of the target vehicle, the first tractive effort, and the first resistance force, the method further comprises:
acquiring a first parameter of the target vehicle, wherein the first parameter comprises a first gradient, a first accelerator opening, a first rotating speed, a first vehicle speed and a first torque;
when the first parameter meets a first preset condition, calculating a first average value of the target vehicle in a first preset time, wherein the first average value comprises an average value of a first rotating speed, a first vehicle speed and a first torque.
Optionally, before determining the first vehicle weight according to the second traction force, the second resistance force, the second average value, the acceleration and the resistance increasing coefficient, the method further comprises:
acquiring second parameters of the target vehicle, wherein the second parameters comprise a second gradient, a second accelerator opening, a second rotating speed, a second vehicle speed and a second torque;
when the second parameter meets a second preset condition, calculating a second average value of the target vehicle within a second preset time;
and when the second vehicle speed is approximately equal to the first vehicle speed, determining second resistance according to first resistance corresponding to the first vehicle speed.
Optionally, when the difference between the second vehicle weight and the third vehicle weight satisfies a fourth preset condition, determining that the average vehicle weight of the second vehicle weight and the third vehicle weight is a target vehicle weight includes:
and when the difference value of the comparison between the second vehicle weight and the third vehicle weight is larger than 10%, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight.
Optionally, when the difference does not satisfy a fourth preset condition, determining that the second vehicle weight is the target vehicle weight includes:
when the difference between the second vehicle weight and the third vehicle weight is less than or equal to 10%, determining that the second vehicle weight is the target vehicle weight, and saving the third vehicle weight data.
A second aspect of the embodiments of the present application provides a device for a method for calculating a weight of an automobile, including:
a third obtaining unit, configured to obtain a second traction force, a second resistance, a second rotation speed, a second vehicle speed, and a second torque of the target vehicle;
a third determining unit, configured to determine a first vehicle weight according to the second traction force, the second resistance, a second average value, an acceleration, and a resistance increase coefficient, where the second average value includes an average of the second rotational speed, the second vehicle speed, and the second torque, and the acceleration is determined according to the second vehicle speed;
a fourth determining unit, configured to determine a second vehicle weight, where the second vehicle weight is an average vehicle weight of the first vehicle weight within a first preset number of times;
a fifth determining unit, configured to determine a third vehicle weight, where the third vehicle weight is an average vehicle weight of the first vehicle weight within a second preset number of times;
a sixth determining unit, configured to determine, when a difference between the second vehicle weight and the third vehicle weight satisfies a third preset condition, an average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
a seventh determining unit, configured to determine that the second vehicle weight is the target vehicle weight when the difference does not satisfy a third preset condition.
Optionally, before the third obtaining unit, the apparatus further includes:
a second obtaining unit, configured to obtain a first traction force and a first resistance force of the target vehicle, where the first resistance force includes a first wind resistance force and a first tire rolling resistance force;
a first determining unit for determining a second resistance force based on a first average value of the target vehicle, the first traction force and the first resistance force.
Optionally, before the first determining unit, the apparatus further includes:
the first acquiring unit is used for acquiring a first parameter of the target vehicle, wherein the first parameter comprises a first gradient, a first accelerator opening, a first rotating speed, a first vehicle speed and a first torque;
the first calculating unit is used for calculating a first average value of the target vehicle in a first preset time when the first parameter meets a first preset condition, and the first average value comprises an average value of a first rotating speed, a first vehicle speed and a first torque.
Optionally, before the second determining unit, the apparatus further includes:
the fourth acquiring unit is used for acquiring a second parameter of the target vehicle, wherein the second parameter comprises a second gradient, a second accelerator opening, a second rotating speed, a second vehicle speed and a second torque;
the second calculating unit is used for calculating a second average value of the target vehicle within a second preset time when the second parameter meets a second preset condition;
and the second determining unit is used for determining second resistance according to the first resistance corresponding to the first vehicle speed when the second vehicle speed is approximately equal to the first vehicle speed.
Optionally, the sixth determining unit includes:
and the first determining module is used for determining the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight when the difference value of the comparison between the second vehicle weight and the third vehicle weight is greater than 10%.
Optionally, the seventh determining unit includes:
and the second determining module is used for determining that the second vehicle weight is the target vehicle weight and saving the third vehicle weight data when the difference value between the second vehicle weight and the third vehicle weight is less than or equal to 10%.
In a third aspect of the embodiments of the present application, there is provided an apparatus for calculating a weight of an automobile, including:
the device comprises a processor, a memory, an input and output unit and a bus;
the processor is connected with the memory, the input and output unit and the bus;
the processor specifically performs the following operations:
acquiring a second traction force, a second resistance force, a second rotating speed, a second vehicle speed and a second torque of the target vehicle;
determining a first vehicle weight according to the second traction force, the second resistance, a second average value, an acceleration, and a resistance increase factor, wherein the second average value comprises an average of the second rotational speed, the second vehicle speed, and the second torque, and the acceleration is determined according to the second vehicle speed;
determining a second vehicle weight, wherein the second vehicle weight is the average vehicle weight of the first vehicle weight within a first preset number of times;
determining a third vehicle weight, wherein the third vehicle weight is the average vehicle weight of the first vehicle weight within a second preset number of times;
when the difference value between the second vehicle weight and the third vehicle weight meets a third preset condition, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
and when the difference value does not meet a third preset condition, determining that the second vehicle weight is the target vehicle weight.
Optionally, the processor is further configured to perform the operations of any of the alternatives of the first aspect.
A fourth aspect of embodiments of the present application provides a computer-readable storage medium for calculating a weight of an automobile, including:
the computer-readable storage medium has a program stored thereon, which when executed on a computer performs the aforementioned method of calculating the weight of a vehicle.
According to the technical scheme, the embodiment of the application has the following advantages:
in the application, a first traction force and a first resistance force of a target vehicle are obtained, wherein the first resistance force comprises a first wind resistance force and a first tire rolling resistance force; taking a first average value of the first rotating speed, the first vehicle speed and the first torque, and calculating a second resistance according to the first average value, the first traction force and the first resistance; acquiring a second traction force; calculating a first vehicle weight according to a second average value, a second traction force, a second resistance, an acceleration, an output power and a resistance increasing coefficient which are obtained by calculating a second rotating speed, a second vehicle speed and a second torque; calculating a second vehicle weight within a second preset number of times; calculating a third vehicle weight at a second preset time; and when the difference value between the second vehicle weight and the third vehicle weight meets a third preset condition, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as the target vehicle weight, and when the difference value does not meet the third preset condition, determining the second vehicle weight as the target vehicle weight. In the calculation process, the influence of the driving resistance of the automobile on the automobile weight is considered, and the method of averaging after multiple calculations is adopted, so that the accuracy of the automobile weight data is effectively improved.
Drawings
FIG. 1 is a schematic flow chart illustrating an embodiment of a method for calculating a weight of an automobile according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a force applied to a vehicle in an acceleration stage according to another embodiment of the method for calculating a vehicle weight according to the embodiment of the present application;
FIG. 3 is a schematic flow chart of another embodiment of a method for calculating a vehicle weight according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a force applied to a vehicle at a uniform velocity stage according to another embodiment of the method for calculating a weight of an automobile according to the embodiment of the present application;
FIG. 5 is a schematic structural diagram of an embodiment of a vehicle weight calculating device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another embodiment of the vehicle weight calculating device in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a method for calculating the weight of an automobile, which is used for effectively improving the accuracy of the weight data of the automobile.
In this embodiment, the method for calculating the weight of the vehicle may be implemented in a system, a server, or a terminal, and is not specifically limited.
Referring to fig. 1 and fig. 2, an embodiment of the present application is described by using an example of a system, and an embodiment of a method for calculating a vehicle weight in the embodiment of the present application includes:
101. the system obtains the average value of a second traction force, a second resistance force, a second rotating speed, a second vehicle speed and a second torque of the target vehicle;
in practical application, the weight of the monitored vehicle can be additionally provided with the deformation sensor, different loads of the vehicle can generate different physical deformations of the crossbeam or the suspension, and the vehicle weight can be calculated by combining parameters of the vehicle or calculating the vehicle weight through Newton's second law. However, the above method has a great influence on the accuracy of the deformation sensor due to the bumpy road surface when the vehicle travels, and the weight of the vehicle must be measured using a fixed device at a fixed place.
In the embodiment of the application, the dependence on fixed places and fixed equipment is not needed, various sensors or other equipment with higher cost are not needed to be additionally arranged, and the existing relevant parameters of the vehicle are fully utilized. Specifically, the traction force of the target vehicle in the acceleration stage, the resistance calculated in the acceleration stage, and the rotating speed, the vehicle speed and the torque of the vehicle in the acceleration stage are obtained to serve as data bases to calculate the vehicle weight of the target vehicle.
102. The system determines a first vehicle weight according to the second traction force, the second resistance, a second average value, acceleration and a resistance increasing coefficient, wherein the second average value comprises an average value of a second rotating speed, a second vehicle speed and a second torque, and the acceleration is determined according to the second vehicle speed;
in this embodiment, the acceleration is obtained by subtracting the vehicle speeds at the head and tail moments within a certain time and then dividing the vehicle speeds by the time, and the time value can be obtained according to the range of the calculation result.
The calculation of the vehicle weight is based on Newton's second law of motion, and the calculation formula of the specific vehicle weight is as follows:
wherein, FTraction 2Indicating traction during acceleration of the vehicle, FResistor 2Representing the resistance of the vehicle during acceleration, FResistor 2Including wind resistance and tire rolling resistance during vehicle acceleration, FYang 1Denotes the resistance of the vehicle during constant speed running, k denotes the resistance correction coefficient during acceleration of the vehicle, a2Indicating vehicle acceleration, P2Indicating engine output, V, at vehicle acceleration2Representing the speed of the vehicle during acceleration, n2Indicating the engine speed, T, at which the vehicle is accelerating2Represents the engine output torque at the time of vehicle acceleration, and m represents the weight of the target vehicle.
According to the formula, the weight of the target vehicle is determined according to the traction force when the vehicle accelerates, the resistance when the vehicle runs at a constant speed, the speed when the vehicle accelerates, the engine output torque when the vehicle accelerates, the acceleration and the resistance correction coefficient when the vehicle accelerates, wherein the resistance increase coefficient can be calibrated according to different vehicle types to obtain a resistance increase coefficient curve, the value of the coefficient can be obtained by looking up a table from the curve during calculation, and the value set here is 1.
103. The system determines a second vehicle weight, wherein the second vehicle weight is the average vehicle weight of the first vehicle weight within a first preset number of times;
in this embodiment, the first preset number is the number of times of calculating the value of the average value, the number is set according to the bearing acting force of the target vehicle load, the vehicle running time and the distance, and may be set to 5 times, and the vehicle weight m is calculated for 5 times1、m2、m3、m4、m5And then, taking the average value for 5 times to determine the second vehicle weight, wherein the second vehicle weight is the effective vehicle weight which can be sent to the instrument for displaying, and the data obtained by adopting an algorithm of taking the average value after calculating the vehicle weight for multiple times is more accurate.
104. The system determines a third vehicle weight, wherein the third vehicle weight is the average vehicle weight of the first vehicle weight within a second preset number of times;
in the present embodiment, the second preset number is a number set after the first preset number, and it is assumed that the above setting is 5, where the second preset number is a number after 5. The average value is calculated again for 5 times through the method and then determined as the third vehicle weight, when the first effective vehicle weight displayed on the instrument is the second vehicle weight, the result of the calculated third vehicle weight is not sent to the instrument immediately, the calculated third vehicle weight is compared with the second vehicle weight, and whether the third vehicle weight is sent to the instrument or not is determined after comparison.
105. When the difference value between the second vehicle weight and the third vehicle weight meets a third preset condition, the system determines the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
in this embodiment, when the difference between the second vehicle weight and the third vehicle weight satisfies the third preset condition, the system calculates an average value of the second vehicle weight and the third vehicle weight, determines the average value as a primary effective vehicle weight, and sends the effective vehicle weight to the meter for displaying.
106. When the difference does not satisfy the third preset condition, the system determines that the second vehicle weight is the target vehicle weight.
In this embodiment, when the difference between the second vehicle weight and the third vehicle weight does not satisfy the third preset condition, the system determines that the second vehicle weight is an effective vehicle weight, and whether the meter displays the old effective vehicle weight or not, until the difference between the vehicle weights satisfies the third preset condition, the system calculates an average value between the current effective vehicle weight and all the previous effective vehicle weights, and the calculated average value is used as one-time effective vehicle weight and is sent to the meter to be displayed.
In the embodiment of the application, the traction force, the resistance force, the acceleration, the rotating speed, the torque and the correction coefficient when the target vehicle is accelerated are obtained through measurement and calculation, wherein the rotating speed, the speed and the torque are obtained by taking average values under certain conditions, and then calculating the parameters to obtain the effective vehicle weight, the effective vehicle weight is sent to the instrument for displaying, the effective vehicle weight is continuously calculated by the calculating method, when the existing displayed effective vehicle weight is available, in order to avoid the driver from feeling that the vehicle weight is updated too frequently, the difference value of the new and old effective vehicle weights is compared, whether the difference value meets the preset condition is judged, then the effective vehicle weight is determined and sent to the instrument for displaying, the influence of the driving resistance of the vehicle on the vehicle weight is fully considered in the calculation process, and a method of taking an average value after multiple times of calculation is adopted, so that the accuracy of the calculation result is effectively improved.
Referring to fig. 3 and 4, embodiments of the present application are described using an example system. Another embodiment of the method for calculating the weight of the automobile in the embodiment of the application comprises the following steps:
301. the method comprises the steps that a system obtains first parameters of a target vehicle, wherein the first parameters comprise a first gradient, a first accelerator opening, a first rotating speed, a first vehicle speed and a first torque;
in this embodiment, the system obtains the measured and calculated parameters of the target vehicle during uniform motion, where the parameters include a slope, an accelerator opening, a rotation speed, a vehicle speed, and a torque during uniform motion, the slope and the accelerator opening of a road of the vehicle during uniform motion may affect a resistance of the vehicle and a calculated vehicle weight, and the rotation speed, the vehicle speed, and the torque may directly affect an acceleration of the vehicle and an output power of an engine, so that the parameters are obtained as a data basis for calculating the vehicle weight.
302. When the first parameter meets a first preset condition, the system calculates a first average value of the target vehicle in a first preset time, wherein the first average value comprises an average value of a first rotating speed, a first vehicle speed and a first torque;
in practical application, when the vehicle weight is calculated, the rotating speed, the vehicle speed and the torque of the vehicle can be directly taken for calculation, but the accuracy of the calculated result is not high. This embodiment adopts a method of calculating an average value multiple times.
Specifically, when the first parameter satisfies a first preset condition, the first preset condition includes an angle of a slope, which may be set to be less than 1 degree, an accelerator opening degree, which may be set to be greater than 20%, and an accelerator opening degree, an engine speed, which are not considered if the cruise function is activated, which may be set to be greater than 800rpm and less than 2500rpm, and a fluctuation of not more than 30rpm, a vehicle speed, which may be set to be greater than 30km/h and less than 80km/h, and a fluctuation of not more than 3km/h, a torque, which may be set to be greater than 30% in output percentage, and a fluctuation of not more than 5%.
The first preset time can be set as 10S according to the vehicle running time and the distance, and the average value of 100 equally spaced sampling points of 3 parameters of the rotating speed, the vehicle speed and the torque when the vehicle is at a constant speed in 10S is calculated, wherein the number of the parameters can be set according to the vehicle running time and the distance.
303. The system acquires a first traction force and a first resistance of a target vehicle, wherein the first resistance comprises a first wind resistance and a first tire rolling resistance;
in this embodiment, the premise of the system calculating the resistance in the vehicle acceleration stage is that the resistances at different speeds in the constant speed stage need to be calculated, so that the traction and the resistance of the target vehicle at a certain constant speed are obtained, where the resistance includes wind resistance and tire rolling resistance, and the resistance affecting the vehicle weight in the vehicle driving process is fully considered, so that the accuracy of the calculation result is effectively improved.
304. The system determines a second resistance based on the first average of the target vehicle, the first tractive effort, and the first resistance;
when the vehicle runs at a constant speed, the traction force is equal to the running resistance, and according to a Newton first motion law, a specific calculation formula is as follows:
wherein, FTraction 1Representing the constant-speed running traction of the vehicle, FResistor 1Representing the resistance of the vehicle at a constant speed, P1Engine output power, v, representing vehicle travel1Indicates the constant running speed of the vehicle, n1Indicating the engine speed, T, at which the vehicle is travelling at a constant speed1Which represents the engine output torque at which the vehicle is running at a constant speed.
As can be seen from the above formula, the calculation of the uniform velocity resistance at the primary average vehicle speed is determined according to the rotating speed, the vehicle speed and the torque when the vehicle runs at a uniform velocity. When the gradient, the accelerator opening, the rotating speed, the vehicle speed and the torque of the vehicle in the constant-speed running process meet the first preset condition, continuously calculating the running resistance under different vehicle speeds, continuously filling the average value of the vehicle speeds and the running resistance into a binary array from small to large, when the existing average vehicle speed in the array is met, filling the resistance value according to the weighted average value of 60% and 40%, wherein the second resistance is the resistance value under the average vehicle speed in the constant-speed stage closest to the average vehicle speed in the acceleration stage.
305. The system obtains the average value of a second traction force, a second resistance force, a second rotating speed, a second vehicle speed and a second torque of the target vehicle;
306. the system determines a first vehicle weight according to the second traction force, the second resistance, a second average value, acceleration and a resistance increasing coefficient, wherein the second average value comprises an average value of a second rotating speed, a second vehicle speed and a second torque, and the acceleration is determined according to the second vehicle speed;
307. the system determines a second vehicle weight, wherein the second vehicle weight is the average vehicle weight of the first vehicle weight within a first preset number of times;
308. the system determines a third vehicle weight, wherein the third vehicle weight is the average vehicle weight of the first vehicle weight within a second preset number of times;
309. When the difference value of the comparison between the second vehicle weight and the third vehicle weight is larger than 10%, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
in this embodiment, the calculated second vehicle weight is compared with the calculated third vehicle weight, and when the difference value is greater than 10%, the influence of the parameter factor between the two vehicle weight results is described, where the influence may be the influence of resistance and other factors of the vehicle during driving, so that the average value of the second vehicle weight and the third vehicle weight is calculated as the first effective vehicle weight, and thus the data accuracy of the effective vehicle weight calculated by using the averaging method is higher.
310. When the difference between the second vehicle weight and the third vehicle weight is less than or equal to 10%, the second vehicle weight is determined to be the target vehicle weight, and third vehicle weight data is saved.
In this embodiment, when the difference between the compared second vehicle weight and the third vehicle weight is less than or equal to 10%, which indicates that the difference between the second vehicle weight and the third vehicle weight is not large, the second vehicle weight already displayed in the meter may be directly regarded as the first effective vehicle weight, and the third vehicle weight data may be stored, so as to calculate the effective vehicle weight later. And storing the data not to be displayed when the difference value between the effective vehicle weight calculated subsequently and the currently displayed vehicle weight is less than or equal to 10%. Therefore, the effective vehicle weight data obtained by calculating the average value of a plurality of vehicle weights is more accurate.
Referring to fig. 5, an embodiment of the device for calculating a vehicle weight according to the embodiment of the present application includes:
a first obtaining unit 501, configured to obtain a first parameter of a target vehicle, where the first parameter includes a first gradient, a first accelerator opening, a first rotation speed, a first vehicle speed, and a first torque;
a first calculating unit 502, configured to calculate a first average value of the target vehicle in a first preset time when the first parameter meets a first preset condition, where the first average value includes an average value of a first rotation speed, a first vehicle speed, and a first torque;
a second obtaining unit 503, configured to obtain a first traction force and a first resistance of the target vehicle, where the first resistance includes a first wind resistance and a first tire rolling resistance;
a first determining unit 504 for determining a second resistance force based on the first average value, the first traction force and the first resistance force of the target vehicle;
a third obtaining unit 505, configured to obtain a second traction force, a second resistance, a second rotation speed, a second vehicle speed, and a second torque of the target vehicle;
a fourth obtaining unit 506, configured to obtain a second parameter of the target vehicle, where the second parameter includes a second gradient, a second accelerator opening, a second rotation speed, a second vehicle speed, and a second torque;
a second calculating unit 507, configured to calculate a second average value of the target vehicle within a second preset time when the second parameter satisfies a second preset condition;
a second determining unit 508, configured to determine a second resistance according to the first resistance corresponding to the first vehicle speed when the second vehicle speed is approximately equal to the first vehicle speed;
a third determining unit 509, configured to determine the first vehicle weight according to the second traction force, the second resistance, a second average value, an acceleration, and a resistance increasing coefficient, where the second average value includes an average of the second rotational speed, the second vehicle speed, and the second torque, and the acceleration is determined according to the second vehicle speed;
a fourth determining unit 510, configured to determine a second vehicle weight, where the second vehicle weight is an average vehicle weight of the first vehicle weight within a first preset number of times;
a fifth determining unit 511, configured to determine a third vehicle weight, where the third vehicle weight is an average vehicle weight of the first vehicle weight within a second preset number of times;
a sixth determining unit 512, configured to determine, when a difference between the second vehicle weight and the third vehicle weight satisfies a third preset condition, an average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
a seventh determining unit 513, configured to determine the second vehicle weight as the target vehicle weight when the difference does not satisfy the third preset condition.
In this embodiment, the first obtaining unit 501 obtains a first parameter of the target vehicle, the first parameter includes a first gradient, a first accelerator opening, a first rotation speed, a first vehicle speed, and a first torque, when the first parameter satisfies a first preset condition, the first calculating unit 502 calculates a first average value of the target vehicle within a first preset time, the second obtaining unit 503 obtains a first traction force and a first resistance of the target vehicle, the first resistance includes a first wind resistance and a first tire rolling resistance, the third obtaining unit 505 obtains a second traction force, a second resistance, a second rotation speed, a second vehicle speed, and a second torque of the target vehicle, the fourth obtaining unit 506 obtains a second parameter of the target vehicle, the second parameter includes a second gradient, a second accelerator opening, a second rotation speed, a second vehicle speed, and a second torque, when the second parameter satisfies a second preset condition, the second calculation unit 507 calculates a second average value of the target vehicle for a second preset time, and when the second vehicle speed is approximately equal to the first vehicle speed, the second determining unit 508 determines a second resistance according to the first resistance corresponding to the first vehicle speed, the third determining unit 509 determines a first vehicle weight according to the second traction force, the second resistance, the second average value, the acceleration, and the resistance increasing coefficient, the fourth determining unit 510 determines a second vehicle weight, the fifth determining unit 511 determines a third vehicle weight, when the difference between the second vehicle weight and the third vehicle weight satisfies the third preset condition, the sixth determining unit 512 determines that the average vehicle weight of the second vehicle weight and the third vehicle weight is the target vehicle weight, when the difference does not satisfy the third preset condition, the seventh determining unit 513 determines the second weight as the target weight, therefore, the accuracy of the vehicle weight data obtained by calculating the average value by multiple times is higher.
Referring to fig. 6, another embodiment of the device for calculating the vehicle weight in the embodiment of the present application includes:
a processor 601, a memory 602, an input-output unit 603, a bus 604;
the processor 601 is connected with the memory 602, the input/output unit 603 and the bus 604;
the processor 601 performs the following operations:
acquiring a second traction force, a second resistance force, a second rotating speed, a second vehicle speed and a second torque of the target vehicle;
determining a first vehicle weight according to the second traction force, the second resistance, a second average value, acceleration and a resistance increase coefficient, wherein the second average value comprises an average value of a second rotating speed, a second vehicle speed and a second torque, and the acceleration is determined according to the second vehicle speed;
determining a second vehicle weight, wherein the second vehicle weight is the average vehicle weight of the first vehicle weight within a second preset number of times;
determining a third vehicle weight, wherein the third vehicle weight is the average vehicle weight of the first vehicle weight within a second preset number of times;
when the difference value between the second vehicle weight and the third vehicle weight meets a third preset condition, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
and when the difference value does not meet a third preset condition, determining that the second vehicle weight is the target vehicle weight.
Optionally, the functions of the processor 601 correspond to the steps in the embodiments shown in fig. 1 to fig. 4, which are not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Claims (6)
1. A method of calculating a weight of an automobile, comprising:
acquiring first traction and first resistance of a target vehicle, wherein the first resistance comprises first wind resistance and first tire rolling resistance, and the first traction and the first resistance are respectively driving traction and driving resistance when the target vehicle is at a preset uniform speed;
determining a second resistance based on a first average of the target vehicle, the first tractive effort, and the first resistance, the first average comprising an average of a first rotational speed, a first vehicle speed, and a first torque of the target vehicle;
acquiring a second traction force, a second resistance force, a second rotating speed, a second vehicle speed and a second torque of the target vehicle;
determining a first vehicle weight according to the second traction force, the second resistance, a second average value, an acceleration, and a resistance increase factor, wherein the second average value comprises an average of the second rotational speed, the second vehicle speed, and the second torque, and the acceleration is determined according to the second vehicle speed;
determining a second vehicle weight, wherein the second vehicle weight is an average vehicle weight of the first vehicle weight within a first preset number of times;
determining a third vehicle weight, wherein the third vehicle weight is the average vehicle weight of the first vehicle weight within a second preset number of times;
when the difference value between the second vehicle weight and the third vehicle weight meets a third preset condition, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
when the difference value does not meet a third preset condition, determining that the second vehicle weight is the target vehicle weight;
the determining a second resistance force from the first average of the target vehicle, the first tractive effort, and the first resistance force comprises:
calculating a first resistance when the target vehicle runs at a constant speed, wherein a calculation formula of the first resistance is as follows:
Fresistor 1＝FTraction 1
FResistor 1＝P1/v1
FResistor 1＝n1×T1/(9550×v1)；
Wherein, FTraction apparatus 1Representing the constant-speed running traction of the vehicle, FResistor 1Representing the resistance of the vehicle at a constant speed, P1Engine output power, v, representing vehicle travel1Indicating the constant speed of the vehicle, n1Indicating the engine speed, T, at which the vehicle is travelling at a constant speed1An engine output torque representing a constant speed of the vehicle;
and calculating a plurality of groups of first resistance values according to the calculation formula, and selecting the first resistance value at the average speed of the constant speed stage closest to the average speed of the acceleration stage as a second resistance.
2. The method of claim 1, wherein prior to determining a second resistance force based on the first average value of the target vehicle, the first tractive effort, and the first resistance force, the method further comprises:
acquiring a first parameter of the target vehicle, wherein the first parameter comprises a first gradient, a first accelerator opening, a first rotating speed, a first vehicle speed and a first torque;
when the first parameter meets a first preset condition, calculating a first average value of the target vehicle in a first preset time, wherein the first average value comprises an average value of a first rotating speed, a first vehicle speed and a first torque, the first preset condition comprises that the angle of a slope angle is set to be less than 1 degree, the opening degree of an accelerator is set to be greater than 20%, the rotating speed is set to be greater than 800rpm and less than 2500rpm, the fluctuation is not more than 30rpm, the vehicle speed is set to be greater than 30km/h and less than 80km/h, the fluctuation is not more than 3km/h, the torque is set to be greater than 30% in output percentage, and the fluctuation is not more than 5%.
3. The method of claim 2, wherein prior to determining a first vehicle weight based on the second tractive effort, the second resistance, a second average, an acceleration, and a resistance increase factor, the method further comprises:
acquiring second parameters of the target vehicle, wherein the second parameters comprise a second gradient, a second accelerator opening, a second rotating speed, a second vehicle speed and a second torque;
when the second parameter meets a second preset condition, calculating a second average value of the target vehicle within a second preset time;
and when the second vehicle speed is approximately equal to the first vehicle speed, determining second resistance according to first resistance corresponding to the first vehicle speed.
4. The method according to claim 1, wherein the determining that the average vehicle weight of the second vehicle weight and the third vehicle weight is a target vehicle weight when the difference value between the second vehicle weight and the third vehicle weight satisfies a third preset condition comprises:
and when the difference value of the comparison between the second vehicle weight and the third vehicle weight is larger than 10%, determining the average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight.
5. The method according to claim 1, wherein the determining that the second vehicle weight is the target vehicle weight when the difference does not satisfy a third preset condition comprises:
when the difference between the second vehicle weight and the third vehicle weight is less than or equal to 10%, determining that the second vehicle weight is the target vehicle weight, and saving the third vehicle weight data.
6. A vehicle weight calculating apparatus, applied to the vehicle weight calculating method according to claim 1, comprising:
the second obtaining unit is used for obtaining first traction and first resistance of a target vehicle, wherein the first resistance comprises first wind resistance and first tire rolling resistance, and the first traction and the first resistance are respectively running traction and running resistance of the target vehicle at a preset uniform speed;
the first acquiring unit is used for acquiring a first parameter of the target vehicle, wherein the first parameter comprises a first gradient, a first accelerator opening, a first rotating speed, a first vehicle speed and a first torque;
a first calculating unit, configured to calculate a first average value of the target vehicle in a first preset time when the first parameter satisfies a first preset condition, where the first average value includes an average value of a first rotation speed, a first vehicle speed, and a first torque, the first preset condition includes that an angle of a slope angle is set to be less than 1 degree, an accelerator opening is set to be greater than 20%, the rotation speed is set to be greater than 800rpm and less than 2500rpm, a fluctuation is not more than 30rpm, the vehicle speed is set to be greater than 30km/h and less than 80km/h, the fluctuation is not more than 3km/h, the torque is set to be greater than 30% of output, and the fluctuation is not more than 5%;
a first determination unit for determining a second resistance according to a first average value of the target vehicle, the first traction force and the first resistance, the first average value comprising an average of a first rotational speed, a first vehicle speed and a first torque of the target vehicle;
a third obtaining unit, configured to obtain a second traction force, a second resistance, a second rotation speed, a second vehicle speed, and a second torque of the target vehicle;
the fourth acquiring unit is used for acquiring a second parameter of the target vehicle, wherein the second parameter comprises a second gradient, a second accelerator opening, a second rotating speed, a second vehicle speed and a second torque;
the second calculating unit is used for calculating a second average value of the target vehicle within a second preset time when the second parameter meets a second preset condition;
the second determining unit is used for determining second resistance according to first resistance corresponding to the first vehicle speed when the second vehicle speed is approximately equal to the first vehicle speed;
a third determining unit, configured to determine a first vehicle weight according to the second traction force, the second resistance, a second average value, an acceleration, and a resistance increase coefficient, where the second average value includes an average of the second rotational speed, the second vehicle speed, and the second torque, and the acceleration is determined according to the second vehicle speed;
a fourth determining unit, configured to determine a second vehicle weight, where the second vehicle weight is an average vehicle weight of the first vehicle weight within a first preset number of times;
a fifth determining unit, configured to determine a third vehicle weight, where the third vehicle weight is an average vehicle weight of the first vehicle weight within a second preset number of times;
a sixth determining unit, configured to determine, when a difference between the second vehicle weight and the third vehicle weight satisfies a third preset condition, an average vehicle weight of the second vehicle weight and the third vehicle weight as a target vehicle weight;
and the seventh determining unit is used for determining the second vehicle weight as the target vehicle weight when the difference value does not meet a third preset condition.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018179543A (en) * | 2017-04-04 | 2018-11-15 | いすゞ自動車株式会社 | Estimation device and estimation method |
| CN108896149A (en) * | 2018-03-26 | 2018-11-27 | 北汽福田汽车股份有限公司 | Vehicle weighing method and vehicle |
| CN109466561A (en) * | 2018-09-28 | 2019-03-15 | 潍柴动力股份有限公司 | Vehicular gross combined weight calculation method and system |
| CN109808699A (en) * | 2017-11-16 | 2019-05-28 | 北京经纬恒润科技有限公司 | A kind of method and system for estimating vehicle load |
| CN111016917A (en) * | 2018-10-10 | 2020-04-17 | 北汽福田汽车股份有限公司 | Vehicle load capacity detection method and device, computer readable storage medium and vehicle |
| CN111717214A (en) * | 2019-03-22 | 2020-09-29 | 长沙智能驾驶研究院有限公司 | Vehicle mass estimation method and device, electronic equipment and storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004037255A (en) * | 2002-07-03 | 2004-02-05 | Sumitomo Rubber Ind Ltd | Method and apparatus for estimating mass of vehicle, and method and apparatus for estimating gradient using the method |
-
2020
- 2020-10-29 CN CN202011184156.1A patent/CN112406888B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018179543A (en) * | 2017-04-04 | 2018-11-15 | いすゞ自動車株式会社 | Estimation device and estimation method |
| CN109808699A (en) * | 2017-11-16 | 2019-05-28 | 北京经纬恒润科技有限公司 | A kind of method and system for estimating vehicle load |
| CN108896149A (en) * | 2018-03-26 | 2018-11-27 | 北汽福田汽车股份有限公司 | Vehicle weighing method and vehicle |
| CN109466561A (en) * | 2018-09-28 | 2019-03-15 | 潍柴动力股份有限公司 | Vehicular gross combined weight calculation method and system |
| CN111016917A (en) * | 2018-10-10 | 2020-04-17 | 北汽福田汽车股份有限公司 | Vehicle load capacity detection method and device, computer readable storage medium and vehicle |
| CN111717214A (en) * | 2019-03-22 | 2020-09-29 | 长沙智能驾驶研究院有限公司 | Vehicle mass estimation method and device, electronic equipment and storage medium |
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