CN112161686A - Vehicle load determination method, device, equipment and storage medium - Google Patents
Vehicle load determination method, device, equipment and storage medium Download PDFInfo
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- CN112161686A CN112161686A CN202011177475.XA CN202011177475A CN112161686A CN 112161686 A CN112161686 A CN 112161686A CN 202011177475 A CN202011177475 A CN 202011177475A CN 112161686 A CN112161686 A CN 112161686A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/03—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0486—Signalling devices actuated by tyre pressure mounted on the wheel or tyre comprising additional sensors in the wheel or tyre mounted monitoring device, e.g. movement sensors, microphones or earth magnetic field sensors
- B60C23/0488—Movement sensor, e.g. for sensing angular speed, acceleration or centripetal force
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/025—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles wheel-load scales
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
- G01G19/086—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles wherein the vehicle mass is dynamically estimated
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Abstract
The invention belongs to the technical field of vehicle safety, and discloses a method, a device, equipment and a storage medium for determining vehicle load. The method comprises the following steps: acquiring a wheel speed difference value of a vehicle to be measured; searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value; and determining a load value corresponding to the vehicle to be measured according to the tire pressure change value. By the method, the wheel speed difference value of the vehicle to be measured is obtained, the tire pressure change value is obtained, and therefore the load value of the vehicle to be measured is determined.
Description
Technical Field
The invention relates to the technical field of vehicle safety, in particular to a method, a device, equipment and a storage medium for determining vehicle load.
Background
At present, the social automobiles are popularized, people can often use the automobiles in daily life, and the design of the automobiles can have a certain bearing range regardless of people carrying or goods carrying. The existing vehicle basically has no load calculating device and the like, only partial environments such as a highway intersection and other scenes have weighing equipment, most places have no weighing equipment, and a driver cannot master the weight of the vehicle in real time, so that the driver is overloaded and does not know the weight of the vehicle in many times.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a vehicle load determination method, a vehicle load determination device, vehicle load determination equipment and a storage medium, and aims to solve the technical problem that a driver cannot know the weight of a driven vehicle in real time.
To achieve the above object, the present invention provides a vehicle load determination method, including the steps of:
acquiring a wheel speed difference value of a vehicle to be measured;
searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value;
and determining a load value corresponding to the vehicle to be measured according to the tire pressure change value.
Optionally, the determining a load value corresponding to the vehicle to be measured according to the tire pressure variation value includes:
acquiring an initial tire pressure corresponding to the vehicle to be measured;
determining the current tire pressure according to the tire pressure change value and the initial tire pressure;
and searching a corresponding current load from a preset load database according to the current tire pressure, and taking the current load as a load value corresponding to the vehicle to be measured.
Optionally, before the obtaining the wheel speed difference value of the vehicle to be measured, the method further comprises:
acquiring sampled tire pressure values and corresponding sampled load values of a vehicle to be measured in different load states through a tire pressure sensor;
and establishing a database according to the sampled tire pressure value and the sampled load value to obtain a preset load database.
Optionally, before the obtaining the wheel speed difference value of the vehicle to be measured, the method further comprises:
when a vehicle to be measured is in an initial state, acquiring a first tire pressure and a first wheel speed corresponding to the vehicle to be measured;
when the load of the vehicle to be measured changes, acquiring a second tire pressure and a second wheel speed corresponding to the vehicle to be measured;
determining a calibrated tire pressure change value through the first tire pressure and the second tire pressure, and determining a calibrated wheel speed difference value according to the first wheel speed and the second wheel speed;
and establishing a database according to the calibrated tire pressure change value and the calibrated wheel speed difference value to obtain a preset tire pressure database.
Optionally, the initial state comprises an unloaded state and a loaded state.
Optionally, after determining the load value corresponding to the vehicle to be measured according to the tire pressure variation value, the method further includes:
and sending the load value to an instrument so that the instrument displays the load value corresponding to the vehicle to be measured.
Optionally, after determining the load value corresponding to the vehicle to be measured according to the tire pressure variation value, the method further includes:
and sending the load value to an alarm device so that the alarm device monitors the load value, and sending an overload prompt when the load value is monitored to reach a preset overload threshold value.
Further, to achieve the above object, the present invention also proposes a vehicle load determination device including:
the acquisition module is used for acquiring a wheel speed difference value of the vehicle to be measured;
the searching module is used for searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value;
and the determining module is used for determining the load value corresponding to the vehicle to be measured according to the tire pressure change value.
Further, to achieve the above object, the present invention also proposes a vehicle load determination apparatus comprising: a memory, a processor and a vehicle load determination program stored on the memory and executable on the processor, the vehicle load determination program being configured to implement the steps of the vehicle load determination method as described above.
Furthermore, to achieve the above object, the present invention also proposes a storage medium having stored thereon a vehicle load determination program which, when executed by a processor, implements the steps of the vehicle load determination method as described above.
The method comprises the steps of obtaining a wheel speed difference value of a vehicle to be measured; searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value; and determining a load value corresponding to the vehicle to be measured according to the tire pressure change value. Through the mode, the wheel speed difference value of the vehicle to be measured is obtained, and the tire pressure change value is obtained, so that the load value of the vehicle to be measured is determined, the effect of determining the vehicle load in real time is simply and conveniently realized, the technical problem that a driver cannot master the weight of the driven vehicle in real time is solved, the driving safety of the vehicle is ensured, the cost is low, and the realization is easy.
Drawings
FIG. 1 is a schematic diagram of a vehicle load determining apparatus for a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram of a first embodiment of a vehicle load determination method of the present invention;
FIG. 3 is a schematic flow chart of a second embodiment of a vehicle load determination method of the present invention;
FIG. 4 is a schematic flow chart diagram of a third embodiment of a vehicle load determination method of the present invention;
fig. 5 is a block diagram showing the construction of a first embodiment of the vehicle load determining apparatus of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle load determining apparatus in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the vehicle load determination apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the vehicle load determination apparatus and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a vehicle load determination program.
In the vehicle load determination apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the vehicle load determination apparatus of the present invention may be provided in the vehicle load determination apparatus that calls the vehicle load determination program stored in the memory 1005 through the processor 1001 and executes the vehicle load determination method provided by the embodiment of the present invention.
An embodiment of the present invention provides a vehicle load determining method, and referring to fig. 2, fig. 2 is a schematic flowchart of a first embodiment of the vehicle load determining method according to the present invention.
In this embodiment, the vehicle load determination method includes the steps of:
step S10: and acquiring a wheel speed difference value of the vehicle to be measured.
It is understood that the execution subject of this embodiment is a vehicle load determination device, and the vehicle load determination device may be an on-board computer and a vehicle body controller, or may be a Micro Controller Unit (MCU) additionally installed on a vehicle, and this embodiment does not limit this.
It should be noted that, in the vehicle development process, the vehicle speed is calibrated, and the initial wheel speed of the vehicle is recorded and stored in the memory. In the concrete implementation, the number of teeth of a gear ring rotating in a unit period is determined through a wheel speed sensor installed on a vehicle tire to be measured, the current wheel speed can be determined through calculation with the rolling radius of the vehicle tire and the number of teeth of the wheel, the initial wheel speed is obtained from a memory, and therefore a wheel speed difference value is obtained through calculation. The rolling radius of the vehicle tire and the number of the wheel teeth can be obtained through a network, namely, parameters corresponding to the vehicle model are searched, the rolling radius of the vehicle tire and the number of the wheel teeth are obtained from the parameters, and the rolling radius of the vehicle tire and the number of the wheel teeth can also be directly obtained from a corresponding information file in a memory, namely, vehicle information is stored in the memory in the calibration process.
In a specific implementation, a vehicle to be measured is provided with a wheel speed sensor, a memory and a vehicle load determining device, wherein the wheel speed sensor is used for acquiring the number of teeth of a rotating gear ring in a unit period, the memory is used for storing tire parameters and initial wheel speed recorded in a development and calibration process, and the vehicle load determining device is used for determining a load value of the vehicle to be measured.
Step S20: and searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value.
It should be noted that the preset tire pressure database includes a one-to-one correspondence relationship between a wheel speed difference and a tire pressure variation value, and the corresponding tire pressure variation value can be obtained from the preset tire pressure database through the wheel speed difference. The preset tire pressure database may be established through a calibration test process.
Step S30: and determining a load value corresponding to the vehicle to be measured according to the tire pressure change value.
It should be noted that, in the vehicle development process, a tire pressure sensor is installed on the vehicle to be measured, the initial tire pressure is acquired by the tire pressure sensor, and the initial tire pressure is stored in the memory for later use. And acquiring the initial tire pressure from the memory, determining the current tire pressure according to the tire pressure change value and the initial tire pressure, and determining the load value corresponding to the vehicle to be measured according to the relationship between the tire pressure and the load value. In the driving process, because the tire pressure sensor is high in cost and easy to damage, the tire pressure sensor is omitted, and the load value of the vehicle to be measured can be determined directly according to the wheel speed sensor.
Further, after step S30, in order to enable the driver to grasp the vehicle load condition in real time, the method further includes: and sending the load value to an instrument so that the instrument displays the load value corresponding to the vehicle to be measured.
It CAN be understood that, when the vehicle load determination device is a vehicle-mounted computer and a vehicle body controller, the load value is converted into a message through the CAN network and broadcasted, so that the meter responds to the message, and thus the display is performed.
Further, after step S30, in order to enable the driver to grasp the vehicle overload condition and avoid the vehicle overload, the method further includes: and sending the load value to an alarm device so that the alarm device monitors the load value, and sending an overload prompt when the load value is monitored to reach a preset overload threshold value.
It can be understood that the warning device can be a loudspeaker device of a vehicle-mounted computer, and can also be a voice broadcasting device or a warning lamp device which is additionally arranged in a vehicle body, and when the load value reaches a preset overload threshold value, the warning device carries out voice reminding or warning lamp flickering reminding. The preset overload threshold may be determined according to the maximum allowable load limit of the vehicle, or may be set according to the actual situation, which is not limited in this embodiment.
The embodiment obtains the wheel speed difference value of the vehicle to be measured; searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value; and determining a load value corresponding to the vehicle to be measured according to the tire pressure change value. Through the mode, the wheel speed difference value of the vehicle to be measured is obtained, and the tire pressure change value is obtained, so that the load value of the vehicle to be measured is determined, the effect of determining the vehicle load in real time is simply and conveniently realized, the technical problem that a driver cannot master the weight of the driven vehicle in real time is solved, the driving safety of the vehicle is ensured, the cost is low, and the realization is easy.
Referring to fig. 3, fig. 3 is a flowchart illustrating a vehicle load determining method according to a second embodiment of the present invention.
Based on the first embodiment described above, the vehicle load determination method of the present embodiment includes, at the step S30:
step S301: and acquiring the initial tire pressure corresponding to the vehicle to be measured.
It can be understood that, in the vehicle development process, a tire pressure sensor is installed on the vehicle to be measured, the initial tire pressure is acquired by the tire pressure sensor, the initial tire pressure is stored in the memory, and in the vehicle load determination process, the initial tire pressure can be directly acquired from the memory. The initial tire pressure can also be set in advance according to actual conditions, for example, the initial tire pressure is the tire pressure corresponding to the driver when the driver is located in the vehicle to be tested.
Step S302: and determining the current tire pressure according to the tire pressure change value and the initial tire pressure.
It should be noted that the tire pressure change value includes a numerical value and a change type, the change type includes an increase and a decrease, and the current tire pressure can be obtained by adding the tire pressure change value and the initial tire pressure.
Step S303: and searching a corresponding current load from a preset load database according to the current tire pressure, and taking the current load as a load value corresponding to the vehicle to be measured.
It can be understood that the preset load database includes a corresponding relationship between the load and the tire pressure, and the preset load database may be established through a calibration process.
Further, in order to obtain a more accurate vehicle load value, a preset load database is established according to the actual conditions of the vehicle, and before step S10, the method further includes: acquiring sampled tire pressure values and corresponding sampled load values of a vehicle to be measured in different load states through a tire pressure sensor; and establishing a database according to the sampled tire pressure value and the sampled load value to obtain a preset load database.
It should be noted that, in the vehicle development process, a tire pressure sensor is installed on the vehicle to be measured, the tire pressure sensor is used to obtain the sampled tire pressure values of the vehicle in different load states, the sampled load value of the vehicle is obtained by weighing goods in advance, and in the development and calibration process, multiple load values and tire pressure values corresponding to the load values are recorded through multiple sampling, so as to establish a database. In the driving process, because the tire pressure sensor is high in cost and easy to damage, the tire pressure sensor is omitted, and the load value of the vehicle to be measured can be determined directly according to the wheel speed sensor. In specific implementation, the load value corresponding to the vehicle to be driven can be obtained through the preset load database only by obtaining the current tire pressure.
According to the embodiment, the preset load database is established according to the corresponding relation between the tire pressure and the load in the calibration process, the current load value can be determined through the preset load database when the current tire pressure is obtained, the effect of determining the vehicle load in real time is simply and conveniently realized, the technical problem that a driver cannot master the weight of a driven vehicle in real time is solved, the driving safety of the vehicle is ensured, the cost is low, and the method is easy to realize.
Referring to fig. 4, fig. 4 is a flowchart illustrating a third embodiment of a vehicle load determining method according to the present invention.
Based on the first embodiment described above, the vehicle load determination method of the present embodiment further includes, before the step S10:
step S101: when the vehicle to be measured is in an initial state, acquiring a first tire pressure and a first wheel speed corresponding to the vehicle to be measured.
It can be understood that, during the development and calibration of the vehicle to be measured, the first tire pressure is obtained by the tire pressure sensor mounted on the vehicle to be measured, and is denoted by P1The first wheel speed is obtained by a wheel speed sensor mounted on the vehicle to be measured, denoted V1. The initial state may be any loading state of the vehicle.
Further, in order to obtain a more accurate correspondence relationship between the tire pressure variation value and the wheel speed difference value, the initial state includes an unloaded state and a fully loaded state.
Step S102: and when the load of the vehicle to be measured changes, acquiring a second tire pressure and a second wheel speed corresponding to the vehicle to be measured.
When the initial state is an unloaded state, the load of the vehicle to be measured changes in a process that the load of the vehicle increases, and when the initial state is a fully loaded state, the load of the vehicle to be measured changes in a process that the load of the vehicle decreases. Therefore, the relation between the load and the tire pressure can be calibrated in two processes of the change of the load increasing tire pressure and the change of the load reducing tire pressure. The second tire pressure is obtained by a tire pressure sensor arranged on the vehicle to be measured and is marked as P2The second wheel speed is determined by a wheel speed sensor mounted on the vehicle to be measuredGet, note as V2。
Step S103: determining a calibrated tire pressure change value through the first tire pressure and the second tire pressure, and determining a calibrated wheel speed difference value according to the first wheel speed and the second wheel speed;
it can be understood that, in the development and calibration process of the vehicle to be tested, after the good tires are selected (and the good tire pressures are determined at the same time), the vehicle speed is calibrated through no-load and full-load, and at the moment, a preset tire pressure database and a preset load database are established. When the vehicle is unloaded, the tire pressure sensor is arranged on the tire of the vehicle to monitor the tire pressure, the tire pressure is an initial set value P, the rolling radius is corresponding R, the tooth number of the gear ring is T, and the tooth number of the gear ring of the wheel speed sensor, namely the frequency Hz, is counted in the period time.
When the tire pressure is a first tire pressure P1At a frequency of Hz1And calibrating the wheel speeds corresponding to the four tires as V1＝2πRHz1a/T; when the tire pressure is reduced to P2When the wheel speed is calculated as V2＝2πRHz2The wheel speed difference is V' ═ 2 pi R (Hz)1-Hz2) a/T; the corresponding tire pressure difference value is P ═ P1-P2。
Step S104: and establishing a database according to the calibrated tire pressure change value and the calibrated wheel speed difference value to obtain a preset tire pressure database.
It should be noted that, a plurality of calibrated tire pressure change values and corresponding calibrated wheel speed difference values are collected, so as to obtain a relationship between the tire pressure difference value and the wheel speed difference value. The preset tire pressure database comprises a corresponding relation between the tire pressure change value and the wheel speed difference value, and the corresponding tire pressure change value can be acquired through the preset tire pressure database under the condition that the current wheel speed difference value is obtained.
The tire pressure database is established according to the corresponding relation between the tire pressure change value and the wheel speed change value in the calibration process, the current tire pressure change value can be determined through the tire pressure database when the current wheel speed change value is obtained, so that the current load value is determined, the effect of determining the vehicle load in real time is realized simply and conveniently, the technical problem that a driver cannot master the weight of a driven vehicle in real time is solved, the driving safety of the vehicle is ensured, the cost is low, and the method is easy to realize.
Furthermore, an embodiment of the present invention also proposes a storage medium having a vehicle load determination program stored thereon, which when executed by a processor implements the steps of the vehicle load determination method as described above.
Referring to fig. 5, fig. 5 is a block diagram showing the structure of the first embodiment of the vehicle load determining apparatus of the present invention.
As shown in fig. 5, a vehicle load determination device according to an embodiment of the present invention includes:
the acquiring module 10 is used for acquiring a wheel speed difference value of the vehicle to be measured.
It should be noted that, in the vehicle development process, the vehicle speed is calibrated, and the initial wheel speed of the vehicle is recorded and stored in the memory. In the concrete implementation, the number of teeth of a gear ring rotating in a unit period is determined through a wheel speed sensor installed on a vehicle tire to be measured, the current wheel speed can be determined through calculation with the rolling radius of the vehicle tire and the number of teeth of the wheel, the initial wheel speed is obtained from a memory, and therefore a wheel speed difference value is obtained through calculation. The rolling radius of the vehicle tire and the number of the wheel teeth can be obtained through a network, namely, parameters corresponding to the vehicle model are searched, the rolling radius of the vehicle tire and the number of the wheel teeth are obtained from the parameters, and the rolling radius of the vehicle tire and the number of the wheel teeth can also be directly obtained from a corresponding information file in a memory, namely, vehicle information is stored in the memory in the calibration process.
In concrete implementation, a wheel speed sensor and a memory are installed on a vehicle to be measured, the wheel speed sensor is used for acquiring the number of teeth of a rotating gear ring in a unit period, and the memory is used for storing tire parameters recorded in a development and calibration process and an initial wheel speed.
And the searching module 20 is configured to search a corresponding tire pressure variation value from a preset tire pressure database according to the wheel speed difference value.
It should be noted that the preset tire pressure database includes a one-to-one correspondence relationship between a wheel speed difference and a tire pressure variation value, and the corresponding tire pressure variation value can be obtained from the preset tire pressure database through the wheel speed difference. The preset tire pressure database may be established through a calibration test process.
And the determining module 30 is configured to determine a load value corresponding to the vehicle to be measured according to the tire pressure variation value.
It should be noted that, in the vehicle development process, a tire pressure sensor is installed on the vehicle to be measured, the initial tire pressure is acquired by the tire pressure sensor, and the initial tire pressure is stored in the memory for later use. And acquiring the initial tire pressure from the memory, determining the current tire pressure according to the tire pressure change value and the initial tire pressure, and determining the load value corresponding to the vehicle to be measured according to the relationship between the tire pressure and the load value. In the driving process, because the tire pressure sensor is high in cost and easy to damage, the tire pressure sensor is omitted, and the load value of the vehicle to be measured can be determined directly according to the wheel speed sensor.
Further, in order to enable the driver to grasp the vehicle load situation in real time, the determining module 30 is further configured to send the load value to a meter, so that the meter displays the load value corresponding to the vehicle to be measured.
It CAN be understood that, when the determination module 30 is a vehicle-mounted computer and a vehicle body controller, the load value is converted into a message through the CAN network and broadcasted, so that the meter responds to the message, and thus the display is performed, and when the determination module 30 is an MCU additionally installed on a vehicle, the MCU sends the load value to the vehicle-mounted T-Box, so that the vehicle-mounted T-Box sends the load value to the vehicle-mounted computer, and the vehicle-mounted computer converts the load value into a message through the CAN network and broadcasts, so that the meter responds to the message, and thus the display is performed.
Further, in order to enable the driver to master the vehicle overload condition and avoid the vehicle overload, the determining module 30 is further configured to send the load value to an alarm device, so that the alarm device monitors the load value, and when it is monitored that the load value reaches a preset overload threshold value, an overload prompt is sent.
It can be understood that the warning device can be a loudspeaker device of a vehicle-mounted computer, and can also be a voice broadcasting device or a warning lamp device which is additionally arranged in a vehicle body, and when the load value reaches a preset overload threshold value, the warning device carries out voice reminding or warning lamp flickering reminding. The preset overload threshold may be determined according to the maximum allowable load limit of the vehicle, or may be set according to the actual situation, which is not limited in this embodiment.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
The embodiment obtains the wheel speed difference value of the vehicle to be measured; searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value; and determining a load value corresponding to the vehicle to be measured according to the tire pressure change value. Through the mode, the wheel speed difference value of the vehicle to be measured is obtained, and the tire pressure change value is obtained, so that the load value of the vehicle to be measured is determined, the effect of determining the vehicle load in real time is simply and conveniently realized, the technical problem that a driver cannot master the weight of the driven vehicle in real time is solved, the driving safety of the vehicle is ensured, the cost is low, and the realization is easy.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not elaborated in the present embodiment may refer to the vehicle load determination method provided in any embodiment of the present invention, and are not described herein again.
In an embodiment, the determining module 30 is further configured to obtain an initial tire pressure corresponding to the vehicle to be measured;
determining the current tire pressure according to the tire pressure change value and the initial tire pressure;
and searching a corresponding current load from a preset load database according to the current tire pressure, and taking the current load as a load value corresponding to the vehicle to be measured.
In an embodiment, the acquiring module 10 is further configured to acquire, by the tire pressure sensor, sampled tire pressure values of the vehicle to be measured in different load states and corresponding sampled load values;
and establishing a database according to the sampled tire pressure value and the sampled load value to obtain a preset load database.
In an embodiment, the obtaining module 10 is further configured to obtain a first tire pressure and a first wheel speed corresponding to a vehicle to be measured when the vehicle to be measured is in an initial state;
when the load of the vehicle to be measured changes, acquiring a second tire pressure and a second wheel speed corresponding to the vehicle to be measured;
determining a calibrated tire pressure change value through the first tire pressure and the second tire pressure, and determining a calibrated wheel speed difference value according to the first wheel speed and the second wheel speed;
and establishing a database according to the calibrated tire pressure change value and the calibrated wheel speed difference value to obtain a preset tire pressure database.
In one embodiment, the initial state includes an unloaded state and a fully loaded state.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vehicle load determination method, characterized by comprising:
acquiring a wheel speed difference value of a vehicle to be measured;
searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value;
and determining a load value corresponding to the vehicle to be measured according to the tire pressure change value.
2. The vehicle load determination method according to claim 1, wherein the determining the load value corresponding to the vehicle to be measured according to the tire pressure variation value comprises:
acquiring an initial tire pressure corresponding to the vehicle to be measured;
determining the current tire pressure according to the tire pressure change value and the initial tire pressure;
and searching a corresponding current load from a preset load database according to the current tire pressure, and taking the current load as a load value corresponding to the vehicle to be measured.
3. A vehicle load determination method as claimed in claim 2, characterized in that, before the obtaining of the wheel speed difference value of the vehicle to be measured, the method further comprises:
acquiring sampled tire pressure values and corresponding sampled load values of a vehicle to be measured in different load states through a tire pressure sensor;
and establishing a database according to the sampled tire pressure value and the sampled load value to obtain a preset load database.
4. The vehicle load determination method as claimed in claim 1, wherein before the obtaining of the wheel speed difference value of the vehicle to be measured, the method further comprises:
when a vehicle to be measured is in an initial state, acquiring a first tire pressure and a first wheel speed corresponding to the vehicle to be measured;
when the load of the vehicle to be measured changes, acquiring a second tire pressure and a second wheel speed corresponding to the vehicle to be measured;
determining a calibrated tire pressure change value through the first tire pressure and the second tire pressure, and determining a calibrated wheel speed difference value according to the first wheel speed and the second wheel speed;
and establishing a database according to the calibrated tire pressure change value and the calibrated wheel speed difference value to obtain a preset tire pressure database.
5. A vehicle load determination method as claimed in claim 4, characterized in that the initial conditions comprise an unloaded condition and a fully loaded condition.
6. A vehicle load determination method according to any one of claims 1-5, wherein after determining the load value corresponding to the vehicle to be measured from the tire pressure variation value, the method further comprises:
and sending the load value to an instrument so that the instrument displays the load value corresponding to the vehicle to be measured.
7. A vehicle load determination method according to any one of claims 1-5, wherein after determining the load value corresponding to the vehicle to be measured from the tire pressure variation value, the method further comprises:
and sending the load value to an alarm device so that the alarm device monitors the load value, and sending an overload prompt when the load value is monitored to reach a preset overload threshold value.
8. A vehicle load determination apparatus, characterized by comprising:
the acquisition module is used for acquiring a wheel speed difference value of the vehicle to be measured;
the searching module is used for searching a corresponding tire pressure change value from a preset tire pressure database according to the wheel speed difference value;
and the determining module is used for determining the load value corresponding to the vehicle to be measured according to the tire pressure change value.
9. A vehicle load determination apparatus, characterized in that the apparatus comprises: memory, a processor and a vehicle load determination program stored on the memory and executable on the processor, the vehicle load determination program being configured to implement the steps of the vehicle load determination method as claimed in any one of claims 1 to 7.
10. A storage medium, characterized in that the storage medium has stored thereon a vehicle load determination program which, when executed by a processor, carries out the steps of the vehicle load determination method according to any one of claims 1 to 7.
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| CN202011177475.XA CN112161686A (en) | 2020-10-27 | 2020-10-27 | Vehicle load determination method, device, equipment and storage medium |
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| CN202011177475.XA CN112161686A (en) | 2020-10-27 | 2020-10-27 | Vehicle load determination method, device, equipment and storage medium |
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