CN108020239A - A kind of computational methods of vehicle driving mileage, computing device and automobile - Google Patents
A kind of computational methods of vehicle driving mileage, computing device and automobile Download PDFInfo
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- CN108020239A CN108020239A CN201610974203.XA CN201610974203A CN108020239A CN 108020239 A CN108020239 A CN 108020239A CN 201610974203 A CN201610974203 A CN 201610974203A CN 108020239 A CN108020239 A CN 108020239A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
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Abstract
The invention discloses a kind of computational methods of vehicle driving mileage, computing device and automobile, the described method comprises the following steps：The current radius of automobile tire is obtained, and obtains the current angular velocity of automobile tire, wherein, obtaining the mode of the current radius of automobile tire includes：The current radius of automobile tire is obtained by obtaining the tire pressure of automobile tire；The linear velocity of automobile tire is calculated according to the current angular velocity of the current radius of automobile tire and vehicle tyre；And the distance travelled of automobile is calculated according to the linear velocity of automobile tire and the running time of automobile.The method according to the invention, can significantly lift the computational accuracy of the distance travelled of automobile, and the distance travelled of automobile can be accurately calculated without installation fifth wheel instrument.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of computational methods of vehicle driving mileage, a kind of garage
Sail the computing device of mileage and a kind of automobile.
Background technology
Fifth wheel instrument is a kind of common instrument for motor road test, can be installed on the appropriate position of automobile tail or side
Put.It can accurately measure the distance of running car, and calculate speed.
However, fifth wheel instrument calculating speed and distance are to use photoelectricity correlation filtering technology in correlation technique, it is therefore desirable to
Optical circuit surface detector is installed on car to be used to irradiate road surface, and pavement image is transformed to frequency signal.Not only installation is inconvenient,
It is beautiful to influence vehicle, but also extra cost can be increased.
The content of the invention
It is contemplated that one of technical problem in above-mentioned technology is solved at least to a certain extent.For this reason, the present invention
First purpose be to propose a kind of computational methods of vehicle driving mileage, can significantly lift the meter of the distance travelled of automobile
Precision is calculated, the distance travelled of automobile can be accurately calculated without installation fifth wheel instrument.
Second object of the present invention is to propose a kind of computing device of vehicle driving mileage.
Third object of the present invention is to propose a kind of automobile.
To reach above-mentioned purpose, first aspect present invention embodiment proposes a kind of computational methods of vehicle driving mileage,
Comprise the following steps：The current radius of automobile tire is obtained, and obtains the current angular velocity of the automobile tire, wherein, obtain
Taking the mode of the current radius of the automobile tire includes：The automotive wheels are obtained by obtaining the tire pressure of the automobile tire
The current radius of tire；The automobile is calculated according to the current angular velocity of the current radius of the automobile tire and the vehicle tyre
The linear velocity of tire；And the row of the automobile is calculated according to the linear velocity of the automobile tire and the running time of the automobile
Sail mileage.
The computational methods of vehicle driving mileage according to embodiments of the present invention, obtain the current radius of automobile tire first,
Wherein, obtaining the mode of the current radius of automobile tire includes obtaining working as automobile tire by obtaining the tire pressure of automobile tire
Preceding radius, and the current angular velocity of automobile tire is obtained, then according to the current of the current radius of automobile tire and vehicle tyre
Angular speed calculates the linear velocity of automobile tire, finally calculates automobile according to the running time of the linear velocity of automobile tire and automobile
Distance travelled.Thus, this method can significantly lift the computational accuracy of the distance travelled of automobile, without installing fifth wheel instrument
The distance travelled of automobile can accurately be calculated.
In addition, the computational methods for the vehicle driving mileage that above-described embodiment proposes can also be with following attached according to the present invention
The technical characteristic added：
In one embodiment of the invention, it is described to obtain the automotive wheels by obtaining the tire pressure of the automobile tire
The current radius of tire, specifically includes：Obtain the relation curve for the pressure of tire and tire real radius demarcated in the automobile；Root
According to described in the current tire pressure of the automobile tire and the pressure of tire of the calibration and the acquisition of the relation curve of tire real radius
The current radius of automobile tire.
In one embodiment of the invention, the automobile tire is obtained by obtaining the tire pressure of the automobile tire
During current radius, if the tire pressure monitoring system of the automobile occurs abnormal, the pre-set radius of the automobile tire is made
For the current radius of the automobile tire.
In one embodiment of the invention, the linear velocity of the automobile tire is described four tire linear velocities of automobile
Average value.
In one embodiment of the invention, being averaged for described four tire linear velocities of automobile is calculated according to the following formula
Value：
Wherein, v be four tire linear velocities of automobile average value, w1For the angular speed of the automobile first tire, r1
For the current radius of the automobile first tire, w2For the angular speed of second tire of automobile, r2For second tire of automobile
Current radius, w3For the angular speed of the automobile third round tire, r3For the current radius of the automobile third round tire, w4For institute
State the angular speed of automobile fourth round tire, r4For the current radius of the automobile fourth round tire.
In one embodiment of the invention, the automobile tire is obtained by obtaining the tire pressure of the automobile tire
During current radius, if the current tire pressure of the automobile tire is less than default tire pressure threshold value, by the default of the automobile tire
Current radius of the radius as the automobile tire.
In one embodiment of the invention, the automobile tire is obtained by obtaining the tire pressure of the automobile tire
During current radius, if the body electronics systems stabilisation of the automobile intervenes the wheel braking control of the automobile, by institute
State current radius of the pre-set radius of automobile tire as the automobile tire.
To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of computing device of vehicle driving mileage,
Including：Acquisition module, the acquisition module is used for the current radius for obtaining automobile tire, and obtains working as the automobile tire
Preceding angular speed, wherein, obtaining the mode of the current radius of the automobile tire includes：By the tire pressure for obtaining the automobile tire
To obtain the current radius of the automobile tire；First computing module, first computing module are used for according to the automotive wheels
The current angular velocity of the current radius of tire and the vehicle tyre calculates the linear velocity of the automobile tire；And second calculate mould
Block, second computing module are used to calculate the vapour according to the linear velocity of the automobile tire and the running time of the automobile
The distance travelled of car.
The computing device of vehicle driving mileage according to embodiments of the present invention, working as automobile tire is obtained by acquisition module
Preceding radius, and the current angular velocity of automobile tire is obtained, wherein, obtaining the mode of the current radius of automobile tire is included by obtaining
Taking the tire pressure of automobile tire, then the first computing module works as first half according to automobile tire to obtain the current radius of automobile tire
The current angular velocity of footpath and vehicle tyre calculates the linear velocity of automobile tire, and the second computing module is according to the linear velocity of automobile tire
The distance travelled of automobile is calculated with the running time of automobile.Thus, which can significantly lift the distance travelled of automobile
Computational accuracy, the distance travelled of automobile can be accurately calculated without installation fifth wheel instrument.
In addition, the computing device for the vehicle driving mileage that above-described embodiment proposes can also be with following attached according to the present invention
The technical characteristic added：
In one embodiment of the invention, the acquisition module is used for：Obtain the pressure of tire demarcated in the automobile
With the relation curve of tire real radius, and according to the current tire pressure of the automobile tire and the pressure of tire and wheel of the calibration
The relation curve of tire real radius obtains the current radius of the automobile tire.
In one embodiment of the invention, the acquisition module is additionally operable to：By the tire pressure for obtaining the automobile tire
During obtaining the current radius of the automobile tire, if there is exception in the tire pressure monitoring system of the automobile, by the vapour
Current radius of the pre-set radius of wheel tire as the automobile tire.
In one embodiment of the invention, the linear velocity of the automobile tire is described four tire linear velocities of automobile
Average value.
In one embodiment of the invention, being averaged for described four tire linear velocities of automobile is calculated according to the following formula
Value：
Wherein, v be four tire linear velocities of automobile average value, w1For the angular speed of the automobile first tire, r1
For the current radius of the automobile first tire, w2For the angular speed of second tire of automobile, r2For second tire of automobile
Current radius, w3For the angular speed of the automobile third round tire, r3For the current radius of the automobile third round tire, w4For institute
State the angular speed of automobile fourth round tire, r4For the current radius of the automobile fourth round tire.
In one embodiment of the invention, the acquisition module is additionally operable to：By the tire pressure for obtaining the automobile tire
During obtaining the current radius of the automobile tire, if the current tire pressure of the automobile tire is less than default tire pressure threshold value,
Current radius using the pre-set radius of the automobile tire as the automobile tire.
In one embodiment of the invention, the acquisition module is additionally operable to：By the tire pressure for obtaining the automobile tire
During obtaining the current radius of the automobile tire, if the body electronics systems stabilisation of the automobile intervenes the car of the automobile
Control for brake is taken turns, then the current radius using the pre-set radius of the automobile tire as the automobile tire.
To achieve these goals, a kind of automobile that third aspect present invention embodiment proposes includes：Second party of the present invention
The computing device of the vehicle driving mileage of face embodiment.
The automobile of the embodiment of the present invention, by the computing device of above-mentioned vehicle driving mileage, can significantly lift automobile
Distance travelled computational accuracy, can accurately calculate the distance travelled of automobile without installation fifth wheel instrument.
The advantages of aspect that the present invention adds, will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Fig. 1 is the flow chart of the computational methods of vehicle driving mileage according to an embodiment of the invention.
Fig. 2 is the relation curve schematic diagram of pressure of tire according to embodiments of the present invention and tire real radius.
Fig. 3 is the block diagram of the computing device of vehicle driving mileage according to an embodiment of the invention.
Fig. 4 is the block diagram of the computing device of the vehicle driving mileage of other embodiment according to the present invention.
Embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawings come describe the computational methods of the automobile and its distance travelled proposed according to embodiments of the present invention and
Device.
Fig. 1 is the flow chart of the computational methods of vehicle driving mileage according to an embodiment of the invention.
As shown in Figure 1, the computational methods of the vehicle driving mileage of the embodiment of the present invention comprise the following steps：
S1, obtains the current radius of automobile tire, and obtains the current angular velocity of automobile tire, wherein, obtain automobile
The mode of the current radius of tire includes：The current radius of automobile tire is obtained by obtaining the tire pressure of automobile tire.
Wherein, automobile may include electric automobile and fuel-engined vehicle, and the current radius of automobile tire can be the rotation of automobile tire
Turn radius.It should be noted that tire used in the automobile of different model may be different, its corresponding tire radius also has
Institute is different, for example, car and SUV (Sport Utility Vehicle, sport utility vehicle), wherein, the tire of car
Radius is less than the tire radius of SUV under normal circumstances.
In an embodiment of the present invention, automobile may include tire pressure monitoring system and body electronics systems stabilisation, specifically, vapour
Car vehicle after the power is turned on, can obtain the current tire pressure of the automobile tire by tire pressure monitoring system, and pass through body electronics stability series
System obtains the current angular velocity of the automobile tire.It is actual wherein it should be noted that tire is under different pressure (tire pressure) shape bodies
Radius of turn may be different.
In other embodiments of the invention, tire pressure monitoring system can pass through the current tire pressure of the automobile tire got
CAN (Controller Area Network, controller local area network) bus, is sent to instrument control in the form of CAN message
Device, in order to by the current tire pressure of the instrument controller real-time display automobile tire, so as to facilitate user to check.
In one embodiment of the invention, first half is worked as by obtaining the tire pressure of automobile tire with obtain automobile tire
Footpath, specifically may include the relation curve for obtaining the pressure of tire and tire real radius demarcated in automobile, and according to automobile tire
Current tire pressure and the relation curve of pressure of tire and tire real radius of calibration obtain the current radius of automobile tire.
Specifically, automobile can obtain the automobile after the current tire pressure of itself tire is got from the database of itself
The pressure of tire of middle calibration and the relation curve of tire real radius, and current tire pressure that can be according to the automobile tire and calibration
Pressure of tire and the relation curve of tire real radius obtain the current radius of automobile tire.It should be noted that above-mentioned data
Storehouse is storable in the memory space of automobile, wherein, which is not limited only to the memory space based on entity, for example, firmly
Disk, the memory space can also be the memory space (cloud storage space) of the network hard disc of connection automobile.
Wherein, the pressure of tire demarcated in above-mentioned automobile and the relation curve of tire real radius can be with the automobile
Standard quality of the gross mass as calibration, by repeatedly calculating the relation between entire vehicle tyre real radius and tire pressure value, draws
The automobile is under standard quality, tire pressure and the relation curve of tire real radius.It should be noted that described in the embodiment
Automobile gross mass refers to that motor vehicle equipment is complete, and fills objective (including driver), the weight of cargo according to the rules.
Specifically, the pressure of tire demarcated in the automobile described in the embodiment and the relation curve of tire real radius
Can be as shown in Fig. 2, when the tire pressure of tire be P1, the real radius of the tire is R1, when the tire pressure of tire is P2, the tire
Real radius be R2.
In other embodiments of the invention, can by and by the above-mentioned relation curve for obtaining tire pressure and tire real radius with
Corresponding related table is made in data mode write-in instrument code, and saves it in above-mentioned database.Specifically, vapour
Car can obtain corresponding related table after the current tire pressure of itself tire is got from the database of itself, and can basis
The related table obtains the current radius of (that is, acquisition of tabling look-up) automobile tire.
In one embodiment of the invention, the current radius of automobile tire is obtained by obtaining the tire pressure of automobile tire
When, if the tire pressure monitoring system of automobile occurs abnormal, using the pre-set radius of automobile tire as the current of automobile tire
Radius.Wherein, pre-set radius can be that automobile dispatch from the factory matched radius of wheel.
In one embodiment of the invention, the current radius of automobile tire is obtained by obtaining the tire pressure of automobile tire
When, if the current tire pressure of automobile tire is less than default tire pressure threshold value, using the pre-set radius of automobile tire as automobile tire
Current radius.Wherein, it can be the 75% of standard cold conditions pressure to preset tire pressure threshold value.
In one embodiment of the invention, the current radius of automobile tire is obtained by obtaining the tire pressure of automobile tire
When, if during the wheel braking control of the body electronics systems stabilisation intervention automobile of automobile, by the pre-set radius of automobile tire
Current radius as automobile tire.For example, when automobile turning skids, the systems stabilisation of the automobile will intervene the car of automobile
Control for brake is taken turns, at this time current radius of the automobile using the pre-set radius of the automobile tire as automobile tire.
It should be noted that the tire pressure of above-mentioned automobile tire can be the tire pressure of automobile all tire, if the tire of the automobile
Pressure monitoring system is not detected by the tire pressure of the automobile all tire, then working as using the pre-set radius of automobile tire as automobile tire
Preceding radius.For example, the tire pressure monitoring system of automobile has only detected the tire pressure of two tires in the automobile all tire, then by vapour
Current radius of the pre-set radius of wheel tire as automobile tire.
S2, the linear velocity of automobile tire is calculated according to the current angular velocity of the current radius of automobile tire and vehicle tyre.
Wherein, the linear velocity of automobile tire can be the average value of four tire linear velocities of automobile.
In one embodiment of the invention, being averaged for four tire linear velocities of automobile can be calculated according to the following formula (1)
Value：
Wherein, v be four tire linear velocities of automobile average value, w1For the angular speed of automobile first tire, r1For automobile
The current radius of one tire, w2For the angular speed of the second tire of automobile, r2For the current radius of the second tire of automobile, w3For automobile
The angular speed of third round tire, r3For the current radius of automobile third round tire, w4For the angular speed of automobile fourth round tire, r4For automobile
The current radius of fourth round tire.
Specifically, entire car controller can lead to the current tire pressure that tire pressure monitoring system obtains four tires of automobile respectively, and
Obtain the current angular velocity of four tires of automobile respectively by body electronics systems stabilisation.Then entire car controller can be according to this
The current tire pressure of four tires of automobile carries out retrieval accordingly to obtain the reality of four tires of automobile in above-mentioned database
Radius (current radius).Then entire car controller is by the current of the real radius of four tires of automobile and four tires of the automobile
Angular speed brings in formula (1) average value that four tire linear velocities of automobile are calculated into.
It should be noted that the traveling of automobile is not all linear motion, and curvilinear motion is accompanied by as turned.Automobile exists
When turning, outside tire in turning, the stroke of antero posterior axis tire is different.In an embodiment of the present invention, automobile leads to
The average value that four tire linear velocities of automobile have been calculated in above-mentioned formula (1) is crossed, so as to further accurate automotive wheels
The linear velocity of tire.
S3, the distance travelled of automobile is calculated according to the running time of the linear velocity of automobile tire and automobile.
Specifically, the distance travelled of automobile can be multiplied by the running time of automobile by the linear velocity of automobile tire and be obtained, and
Can by the distance travelled of the automobile in instrument display real-time display, so as to facilitate user to check.
In conclusion the computational methods of vehicle driving mileage provided in an embodiment of the present invention, by obtaining four wheels of automobile
The current radius of tire, and the average value for carrying it into formula (1) calculating four tire linear velocities of automobile significantly lifts automobile
The computational accuracy of distance travelled, the distance travelled of automobile can be accurately calculated without installation fifth wheel instrument.
In addition, in other embodiments of the invention, when Tire Pressure Monitor System occurs abnormal, automobile tire works as
Front tyre forces down when default tire pressure threshold value or during the wheel braking control of the body electronics systems stabilisation intervention automobile of automobile, may be used also
The distance travelled of automobile is calculated using default algorithm, wherein, default algorithm can be set when automobile dispatches from the factory.For example, vapour
The current angular velocity of the automobile tire obtained by body electronics systems stabilisation can be multiplied by automobile and dispatched from the factory matched wheel by car
Radius calculates the linear velocity of the automobile tire.The running time that the linear velocity of the automobile tire is then multiplied by the automobile calculates
Go out the distance travelled of the automobile.
To sum up, the computational methods of vehicle driving mileage according to embodiments of the present invention, obtain the current of automobile tire first
Radius, wherein, obtaining the mode of the current radius of automobile tire includes obtaining automotive wheels by obtaining the tire pressure of automobile tire
The current radius of tire, and the current angular velocity of automobile tire is obtained, then according to the current radius and vehicle tyre of automobile tire
Current angular velocity calculate automobile tire linear velocity, finally according to the running time of the linear velocity of automobile tire and automobile calculate
The distance travelled of automobile.Thus, this method can significantly lift the computational accuracy of the distance travelled of automobile, without installation
Fifth wheel instrument can accurately calculate the distance travelled of automobile.
Fig. 3 is the block diagram of the computing device of vehicle driving mileage according to an embodiment of the invention.
As shown in figure 3, the computing device of the vehicle driving mileage of the embodiment of the present invention includes：Acquisition module 100, first is counted
Calculate 200 and second computing module 300 of module.
Wherein, acquisition module 100 is used to obtain the current radius of automobile tire, and obtain automobile tire when anterior angle speed
Degree, wherein, obtaining the mode of the current radius of automobile tire includes：Automobile tire is obtained by obtaining the tire pressure of automobile tire
Current radius.
It should be noted that automobile may include electric automobile and fuel-engined vehicle, the current radius of automobile tire can be automobile
The radius of turn of tire.And tire used in the automobile of different model may be different, its corresponding tire radius also has
Institute is different, for example, car and SUV (Sport Utility Vehicle, sport utility vehicle), wherein, the tire of car
Radius is less than the tire radius of SUV under normal circumstances.
In an embodiment of the present invention, acquisition module 100 may include tire pressure monitoring system and body electronics systems stabilisation, tool
Body, after the power is turned on, acquisition module 100 can obtain the current tire pressure of the automobile tire to vehicle complete vehicle by tire pressure monitoring system, and
The current angular velocity of the automobile tire is obtained by body electronics systems stabilisation.Wherein it should be noted that tire is in different pressures
Under power (tire pressure) shape body, actual radius of turn may be different.
In other embodiments of the invention, tire pressure monitoring system can pass through the current tire pressure of the automobile tire got
CAN (Controller Area Network, controller local area network) bus, is sent to instrument control in the form of CAN message
Device, in order to by the current tire pressure of the instrument controller real-time display automobile tire, so as to facilitate user to check.
In one embodiment of the invention, acquisition module 100 can be used for obtaining the pressure of tire and wheel demarcated in automobile
The relation curve of tire real radius, and according to the current tire pressure of automobile tire and the pressure of tire of calibration and tire real radius
Relation curve obtains the current radius of automobile tire.
Specifically, acquisition module 100 can obtain after the current tire pressure of itself tire is got from the database of automobile
The pressure of tire demarcated in the automobile and the relation curve of tire real radius, and can according to the current tire pressure of the automobile tire and
The pressure of tire of calibration obtains the current radius of automobile tire with the relation curve of tire real radius.It is it should be noted that above-mentioned
Database be storable in the memory space of automobile, wherein, which is not limited only to the memory space based on entity, example
Such as, hard disk, the memory space can also be the memory space (cloud storage space) of the network hard disc of connection automobile.
Wherein, the pressure of tire demarcated in above-mentioned automobile and the relation curve of tire real radius can be with the automobile
Standard quality of the gross mass as calibration, by repeatedly calculating the relation between entire vehicle tyre real radius and tire pressure value, draws
The automobile is under standard quality, tire pressure and the relation curve of tire real radius.It should be noted that described in the embodiment
Automobile gross mass refers to that motor vehicle equipment is complete, and fills objective (including driver), the weight of cargo according to the rules.
Specifically, the pressure of tire demarcated in the automobile described in the embodiment and the relation curve of tire real radius
Can be as shown in Fig. 2, when the tire pressure of tire be P1, the real radius of the tire is R1, when the tire pressure of tire is P2, the tire
Real radius be R2.
In other embodiments of the invention, can by and by the above-mentioned relation curve for obtaining tire pressure and tire real radius with
Corresponding related table is made in data mode write-in instrument code, and saves it in above-mentioned database.Specifically, obtain
Modulus block 100 can obtain corresponding related table after the current tire pressure of itself tire is got from the database of automobile, and
The current radius of (that is, acquisition of tabling look-up) automobile tire can be obtained according to the related table.
In one embodiment of the invention, acquisition module 100 is additionally operable to obtain by obtaining the tire pressure of automobile tire
During the current radius of automobile tire, if exception occurs in the tire pressure monitoring system of automobile, the pre-set radius of automobile tire is made
For the current radius of automobile tire.Wherein, pre-set radius can be that automobile dispatch from the factory matched radius of wheel.
In one embodiment of the invention, acquisition module 100 is additionally operable to obtain by obtaining the tire pressure of automobile tire
During the current radius of automobile tire, if the current tire pressure of automobile tire is less than default tire pressure threshold value, by the pre- of automobile tire
If current radius of the radius as automobile tire.Wherein, it can be the 75% of standard cold conditions pressure to preset tire pressure threshold value.
In one embodiment of the invention, acquisition module 100 is additionally operable to obtain by obtaining the tire pressure of automobile tire
During the current radius of automobile tire, if the wheel braking control of the body electronics systems stabilisation intervention automobile of automobile, by vapour
Current radius of the pre-set radius of wheel tire as automobile tire.For example, when automobile turning skids, the systems stabilisation of the automobile
The wheel braking control of automobile will be intervened, acquisition module 100 is using the pre-set radius of the automobile tire as automobile tire at this time
Current radius.
It should be noted that the tire pressure of above-mentioned automobile tire can be the tire pressure of automobile all tire, if acquisition module 100
The tire pressure of the automobile all tire is not got by the tire pressure monitoring system of the automobile, then is made the pre-set radius of automobile tire
For the current radius of automobile tire.For example, the tire pressure monitoring system of automobile has only detected two wheels in the automobile all tire
The tire pressure of tire, then current radius of the acquisition module 100 using the pre-set radius of automobile tire as automobile tire.
First computing module 200 is used to calculate vapour according to the current radius of automobile tire and the current angular velocity of vehicle tyre
The linear velocity of wheel tire.Wherein, the linear velocity of automobile tire can be the average value of four tire linear velocities of automobile.
In one embodiment of the invention, being averaged for four tire linear velocities of automobile can be calculated according to the following formula (1)
Value：
Wherein, v be four tire linear velocities of automobile average value, w1For the angular speed of automobile first tire, r1For automobile
The current radius of one tire, w2For the angular speed of the second tire of automobile, r2For the current radius of the second tire of automobile, w3For automobile
The angular speed of third round tire, r3For the current radius of automobile third round tire, w4For the angular speed of automobile fourth round tire, r4For automobile
The current radius of fourth round tire.
Specifically, acquisition module 100 can lead to the current tire pressure that tire pressure monitoring system obtains four tires of automobile respectively, and
Obtain the current angular velocity of four tires of automobile respectively by body electronics systems stabilisation.Then acquisition module 100 can basis
The current tire pressure of four tires of the automobile carries out retrieval accordingly to obtain the reality of four tires of automobile in above-mentioned database
Border radius (current radius).Then the first computing module 200 takes turns the real radius of four tires of automobile and four, the automobile
The current angular velocity of tire brings in formula (1) average value that four tire linear velocities of automobile are calculated into.
It should be noted that the traveling of automobile is not all linear motion, and curvilinear motion is accompanied by as turned.Automobile exists
When turning, outside tire in turning, the stroke of antero posterior axis tire is different.In an embodiment of the present invention, automobile leads to
The average value that four tire linear velocities of automobile have been calculated in above-mentioned formula (1) is crossed, so as to further accurate automotive wheels
The linear velocity of tire.
Second computing module 300 is used for the traveling that automobile is calculated according to the linear velocity of automobile tire and the running time of automobile
Mileage.
Specifically, the second computing module 300 can be multiplied by the running time of automobile by the linear velocity of automobile tire and obtain vapour
The distance travelled of car, and can by the distance travelled of the automobile in instrument display real-time display, so as to facilitate user to check.
In conclusion the computing device of vehicle driving mileage provided in an embodiment of the present invention, by obtaining four wheels of automobile
The current radius of tire, and the average value for carrying it into formula (1) calculating four tire linear velocities of automobile significantly lifts automobile
The computational accuracy of distance travelled, the distance travelled of automobile can be accurately calculated without installation fifth wheel instrument.
In addition, in other embodiments of the invention, as shown in figure 4, the computing device of above-mentioned vehicle driving mileage may be used also
Including the 3rd computing module 400, the 3rd computing module 400 can be used for when Tire Pressure Monitor System occurs abnormal, automotive wheels
When the current tire pressure of tire is less than default tire pressure threshold value or the body electronics systems stabilisation intervention automobile of automobile wheel braking control
When, using the distance travelled of default algorithm calculating automobile, wherein, default algorithm can be set when automobile dispatches from the factory.For example,
The automobile tire that 3rd computing module 400 can be obtained acquisition module 100 by body electronics systems stabilisation works as anterior angle speed
Degree is multiplied by the automobile matched radius of wheel that dispatches from the factory and calculates the linear velocity of the automobile tire.Then by the linear velocity of the automobile tire
The running time for being multiplied by the automobile calculates the distance travelled of the automobile.
To sum up, the computing device of vehicle driving mileage according to embodiments of the present invention, automotive wheels are obtained by acquisition module
The current radius of tire, and the current angular velocity of automobile tire is obtained, wherein, obtaining the mode of the current radius of automobile tire includes
The current radius of automobile tire is obtained by obtaining the tire pressure of automobile tire, then the first computing module is according to automobile tire
The current angular velocity of current radius and vehicle tyre calculates the linear velocity of automobile tire, and the second computing module is according to automobile tire
The running time of linear velocity and automobile calculates the distance travelled of automobile.Thus, which can significantly lift the traveling of automobile
The computational accuracy of mileage, the distance travelled of automobile can be accurately calculated without installation fifth wheel instrument.
In order to realize above-described embodiment, the present invention also proposes a kind of automobile, it includes the calculating of above-mentioned vehicle driving mileage
Device.
The automobile of the embodiment of the present invention, by the computing device of above-mentioned vehicle driving mileage, can significantly lift automobile
Distance travelled computational accuracy, can accurately calculate the distance travelled of automobile without installation fifth wheel instrument.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be based on orientation shown in the drawings or
Position relationship, is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
Combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this area
Art personnel can be tied the different embodiments or example described in this specification and different embodiments or exemplary feature
Close and combine.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (15)
1. a kind of computational methods of vehicle driving mileage, it is characterised in that comprise the following steps：
The current radius of automobile tire is obtained, and obtains the current angular velocity of the automobile tire, wherein, obtain the automobile
The mode of the current radius of tire includes：Work as first half by obtaining the tire pressure of the automobile tire with obtain the automobile tire
Footpath；
The line of the automobile tire is calculated according to the current angular velocity of the current radius of the automobile tire and the vehicle tyre
Speed；And
The distance travelled of the automobile is calculated according to the running time of the linear velocity of the automobile tire and the automobile.
2. the computational methods of vehicle driving mileage as claimed in claim 1, it is characterised in that described by obtaining the automobile
The tire pressure of tire is specifically included with obtaining the current radius of the automobile tire：
Obtain the relation curve for the pressure of tire and tire real radius demarcated in the automobile；
Obtained according to the pressure of tire and the relation curve of tire real radius of the current tire pressure of the automobile tire and the calibration
Take the current radius of the automobile tire.
3. the computational methods of vehicle driving mileage as claimed in claim 1, it is characterised in that by obtaining the automobile tire
Tire pressure to obtain the current radius of the automobile tire when, if the tire pressure monitoring system of the automobile occurs abnormal,
Current radius using the pre-set radius of the automobile tire as the automobile tire.
4. the computational methods of vehicle driving mileage as claimed in claim 1, it is characterised in that the linear velocity of the automobile tire
For the average value of four tire linear velocities of automobile.
5. the computational methods of vehicle driving mileage as claimed in claim 4, it is characterised in that according to calculating the following formula
The average value of four tire linear velocities of automobile：
<mrow>
<mi>v</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>w</mi>
<mn>1</mn>
</msub>
<mo>*</mo>
<msub>
<mi>r</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>w</mi>
<mn>2</mn>
</msub>
<mo>*</mo>
<msub>
<mi>r</mi>
<mn>2</mn>
</msub>
<mo>+</mo>
<msub>
<mi>w</mi>
<mn>3</mn>
</msub>
<mo>*</mo>
<msub>
<mi>r</mi>
<mn>3</mn>
</msub>
<mo>+</mo>
<msub>
<mi>w</mi>
<mn>4</mn>
</msub>
<mo>*</mo>
<msub>
<mi>r</mi>
<mn>4</mn>
</msub>
<mo>)</mo>
</mrow>
<mn>4</mn>
</mfrac>
<mo>,</mo>
</mrow>
Wherein, v be four tire linear velocities of automobile average value, w1For the angular speed of the automobile first tire, r1For institute
State the current radius of automobile first tire, w2For the angular speed of second tire of automobile, r2For working as second tire of automobile
Preceding radius, w3For the angular speed of the automobile third round tire, r3For the current radius of the automobile third round tire, w4For the vapour
The angular speed of car fourth round tire, r4For the current radius of the automobile fourth round tire.
6. the computational methods of vehicle driving mileage as claimed in claim 1, it is characterised in that by obtaining the automobile tire
Tire pressure to obtain the current radius of the automobile tire when, if the current tire pressure of the automobile tire is less than default tire pressure threshold
It is worth, then the current radius using the pre-set radius of the automobile tire as the automobile tire.
7. the computational methods of vehicle driving mileage as claimed in claim 1, it is characterised in that by obtaining the automobile tire
Tire pressure to obtain the current radius of the automobile tire when, if the body electronics systems stabilisation of the automobile intervenes the vapour
During the wheel braking control of car, then the current radius using the pre-set radius of the automobile tire as the automobile tire.
A kind of 8. computing device of vehicle driving mileage, it is characterised in that including：
Acquisition module, the acquisition module is used for the current radius for obtaining automobile tire, and obtains working as the automobile tire
Preceding angular speed, wherein, obtaining the mode of the current radius of the automobile tire includes：By the tire pressure for obtaining the automobile tire
To obtain the current radius of the automobile tire；
First computing module, first computing module are used for current radius and the vehicle tyre according to the automobile tire
Current angular velocity calculate the linear velocity of the automobile tire；And
Second computing module, second computing module are used for according to the linear velocity of the automobile tire and the traveling of the automobile
Time calculates the distance travelled of the automobile.
9. the computing device of vehicle driving mileage as claimed in claim 8, it is characterised in that the acquisition module is used for：Obtain
The relation curve for the pressure of tire and tire real radius demarcated in the automobile is taken, and front tyre is worked as according to the automobile tire
Pressure and the pressure of tire of the calibration and the relation curve of tire real radius obtain the current radius of the automobile tire.
10. the computing device of vehicle driving mileage as claimed in claim 8, it is characterised in that the acquisition module is additionally operable to：
During by obtaining the tire pressure of the automobile tire to obtain the current radius of the automobile tire, if the tire pressure prison of the automobile
There is exception in examining system, then the current radius using the pre-set radius of the automobile tire as the automobile tire.
11. the computing device of vehicle driving mileage as claimed in claim 8, it is characterised in that the linear speed of the automobile tire
Spend for the average value of four tire linear velocities of automobile.
12. the computing device of vehicle driving mileage as claimed in claim 11, it is characterised in that institute is calculated according to the following formula
State the average value of four tire linear velocities of automobile：
<mrow>
<mi>v</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>w</mi>
<mn>1</mn>
</msub>
<mo>*</mo>
<msub>
<mi>r</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>w</mi>
<mn>2</mn>
</msub>
<mo>*</mo>
<msub>
<mi>r</mi>
<mn>2</mn>
</msub>
<mo>+</mo>
<msub>
<mi>w</mi>
<mn>3</mn>
</msub>
<mo>*</mo>
<msub>
<mi>r</mi>
<mn>3</mn>
</msub>
<mo>+</mo>
<msub>
<mi>w</mi>
<mn>4</mn>
</msub>
<mo>*</mo>
<msub>
<mi>r</mi>
<mn>4</mn>
</msub>
<mo>)</mo>
</mrow>
<mn>4</mn>
</mfrac>
<mo>,</mo>
</mrow>
Wherein, v be four tire linear velocities of automobile average value, w1For the angular speed of the automobile first tire, r1For institute
State the current radius of automobile first tire, w2For the angular speed of second tire of automobile, r2For working as second tire of automobile
Preceding radius, w3For the angular speed of the automobile third round tire, r3For the current radius of the automobile third round tire, w4For the vapour
The angular speed of car fourth round tire, r4For the current radius of the automobile fourth round tire.
13. the computing device of vehicle driving mileage as claimed in claim 8, it is characterised in that the acquisition module is additionally operable to：
During by obtaining the tire pressure of the automobile tire to obtain the current radius of the automobile tire, if the automobile tire is worked as
Front tyre is forced down in default tire pressure threshold value, then the current radius using the pre-set radius of the automobile tire as the automobile tire.
14. the computing device of vehicle driving mileage as claimed in claim 8, it is characterised in that the acquisition module is additionally operable to：
During by obtaining the tire pressure of the automobile tire to obtain the current radius of the automobile tire, if the vehicle body electricity of the automobile
Sub- systems stabilisation intervenes the wheel braking control of the automobile, then using the pre-set radius of the automobile tire as the automotive wheels
The current radius of tire.
15. a kind of automobile, it is characterised in that include the calculating of the vehicle driving mileage as any one of claim 8-14
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610974203.XA CN108020239A (en) | 2016-11-03 | 2016-11-03 | A kind of computational methods of vehicle driving mileage, computing device and automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610974203.XA CN108020239A (en) | 2016-11-03 | 2016-11-03 | A kind of computational methods of vehicle driving mileage, computing device and automobile |
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| CN108020239A true CN108020239A (en) | 2018-05-11 |
Family
ID=62083715
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610974203.XA Pending CN108020239A (en) | 2016-11-03 | 2016-11-03 | A kind of computational methods of vehicle driving mileage, computing device and automobile |
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