CN107600074A - Vehicle speed measurement method and device - Google Patents
Vehicle speed measurement method and device Download PDFInfo
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- CN107600074A CN107600074A CN201710578822.1A CN201710578822A CN107600074A CN 107600074 A CN107600074 A CN 107600074A CN 201710578822 A CN201710578822 A CN 201710578822A CN 107600074 A CN107600074 A CN 107600074A
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Abstract
The invention discloses a kind of vehicle speed measurement method and device.Wherein, this method includes：Benchmark car speed value is obtained, wherein, benchmark car speed value is the vehicle speed value determined based on default tire specification；Obtain the tire specification of speed automobile to be measured；According to benchmark car speed value and the tire specification of speed automobile to be measured, the vehicle speed value of speed automobile to be measured is obtained.The present invention solves calculates the actual vehicle speed of automobile by the more technical problem of limitation condition in the prior art.
Description
Technical field
The present invention relates to automobile technical field, in particular to a kind of vehicle speed measurement method and device.
Background technology
In the related art, the tire of different size model often is selected because configuration is different with a vehicle, no
The rolling radius of same specification tire is different, and different tire rolling radiuses will influence ABS (anti-lock braking system)/ESP (electricity
Sub- stability program) calculate after the accuracy of actual vehicle speed that obtains and export.
In order that ABS or ESP are calculated and are exported accurate actual vehicle speed, typically using following two methods：
1. the ABS/ESP of corresponding different tire assembling different conditions.
2. the ABS/ESP of the vehicle assembling equal state of different tires, by tire specification by way of lower radiodiagnosis x
Match in ABS/ESP, ABS/ESP calls different tire specification when calculating GES.
But the problem of certain all be present in two kinds of above-mentioned technical schemes, wherein, for scheme 1, in ABS/ESP version
Originally have it is a variety of in the case of, it is necessary to repeatedly automobile tire is demarcated, can so increase the demarcation expense of tire, but also
It is not easy to manage；And for technical scheme 2, it is necessary to which the offline diagnostic function of ABS/ESP systems support of automobile, thus needs
ABS/ESP systems increase offline diagnostic application, can increase its development, increase fee to develop, costly.
For the above-mentioned actual vehicle speed for calculating automobile in the prior art by the more technical problem of limitation condition, at present still
Effective solution is not proposed.
The content of the invention
The embodiments of the invention provide a kind of vehicle speed measurement method and device, at least to solve to calculate automobile in the prior art
Actual vehicle speed by the more technical problem of limitation condition.
One side according to embodiments of the present invention, there is provided a kind of vehicle speed measurement method, including：Obtain benchmark car speed
Value, wherein, the benchmark car speed value is the vehicle speed value determined based on default tire specification；Obtain the tire rule of speed automobile to be measured
Lattice；According to the benchmark car speed value and the tire specification of the speed automobile to be measured, the vehicle speed value of the acquisition speed automobile to be measured.
Further, according to the benchmark car speed value and the tire specification of the speed automobile to be measured, obtain described to be measured
The vehicle speed value of automobile includes：Tire rolling radius corresponding to obtaining the default tire specification, obtains pre-set radius value；Obtain
Tire rolling radius corresponding to the tire specification of the speed automobile to be measured, obtain automobile radius value to be measured；Based on described default half
Footpath value and the automobile radius value to be measured are calculated, and obtain target factor value；According to the benchmark car speed value and the target
Coefficient value, obtain the vehicle speed value of the speed automobile to be measured.
Further, the tire rolling radius corresponding to obtain the default tire specification, obtain pre-set radius value it
Before, methods described also includes：Judge whether tire specification and the default tire specification of the speed automobile to be measured are identical；If
The tire specification of the speed automobile to be measured is identical with the default tire specification, and the vehicle speed value for determining the speed automobile to be measured is
The benchmark car speed value；If the tire specification of the speed automobile to be measured differs with the default tire specification, acquisition is performed
Tire rolling radius corresponding to the default tire specification, the step of obtaining pre-set radius value.
Further, obtaining benchmark car speed value includes：Gather the tire of the default tire specification of predetermined number
Wheel speed signal；Tire rolling radius corresponding to obtaining each default tire specification, obtains pre-set radius value；Based on described
Wheel speed signal and the pre-set radius value obtain the benchmark car speed value.
Further, obtaining the tire specification of speed automobile to be measured includes：Obtain the model of the speed automobile to be measured；Based on institute
The model for stating speed automobile to be measured is searched in presetting database, finds the tire specification of the speed automobile to be measured, wherein,
Tire specification corresponding to multiple automobile models and each automobile model is stored in the presetting database.
Another aspect according to embodiments of the present invention, a kind of vehicle speed measurement device is additionally provided, including：First obtains list
Member, for obtaining benchmark car speed value, wherein, the benchmark car speed value is the vehicle speed value determined based on default tire specification；The
Two acquiring units, for obtaining the tire specification of speed automobile to be measured；3rd acquiring unit, for according to the benchmark car speed value and
The tire specification of the speed automobile to be measured, obtain the vehicle speed value of the speed automobile to be measured.
Further, the 3rd acquiring unit includes：First acquisition module, it is corresponding for obtaining the default tire specification
Tire rolling radius, obtain pre-set radius value；Second acquisition module, for obtaining the tire specification pair of the speed automobile to be measured
The tire rolling radius answered, obtain automobile radius value to be measured；Determining module, for based on the pre-set radius value and described to be measured
Automobile radius value is calculated, and obtains target factor value；3rd acquisition module, for according to the benchmark car speed value and the mesh
Coefficient value is marked, obtains the vehicle speed value of the speed automobile to be measured.
Further, described device also includes：Judging unit, for obtaining wheel corresponding to the default tire specification
Tire rolling radius, before obtaining pre-set radius value, the tire specification and the default tire that judge the speed automobile to be measured are advised
Whether lattice are identical；Determining unit, if the tire specification for the speed automobile to be measured is identical with the default tire specification, really
The vehicle speed value of the fixed speed automobile to be measured is the benchmark car speed value；Execution unit, if the tire for the speed automobile to be measured
Specification differs with the default tire specification, performs and obtains tire rolling radius corresponding to the default tire specification,
The step of obtaining pre-set radius value.
Further, first acquisition unit includes：Acquisition module, for gathering the default tire rule of predetermined number
The wheel speed signal of the tire of lattice；4th acquisition module, for obtaining tire rolling corresponding to each default tire specification
Radius, obtain pre-set radius value；5th acquisition module, described in being obtained based on the wheel speed signal and the pre-set radius value
Benchmark car speed value.
Further, second acquisition unit includes：6th acquisition module, for obtaining the model of the speed automobile to be measured；
Searching modul, searched, found described to be measured in presetting database for the model based on the speed automobile to be measured
The tire specification of automobile, wherein, stored in the presetting database corresponding to multiple automobile models and each automobile model
Tire specification.
In embodiments of the present invention, can be obtained after benchmark car speed value is got with reference to the tire specification of speed automobile to be measured
To the vehicle speed value of speed automobile to be measured, to the tire of different size in the application, the car that can be determined according to default tire specification
Fast value obtains the vehicle speed value of speed automobile to be measured, it is not necessary to which the ABS/ESP systems of automobile support time radiodiagnosis x, can directly obtain
The vehicle speed value of speed automobile to be measured, reduce the confined condition for the speed for measuring automobile to be measured, and then solve to calculate in the prior art
The actual vehicle speed of automobile is by the more technical problem of limitation condition.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of vehicle speed measurement method according to embodiments of the present invention；
Fig. 2 is a kind of schematic diagram of optional vehicle speed measurement according to embodiments of the present invention；
Fig. 3 is the schematic diagram of vehicle speed measurement device according to embodiments of the present invention.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so that embodiments of the invention described herein are except that can illustrate or retouch herein
Order beyond those stated is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that covering
Non-exclusive includes, and is not necessarily limited to clearly for example, containing the process of series of steps or unit, method, system, product or equipment
Those steps or unit listed to Chu, but may include not list clearly or for these processes, method, product or
The intrinsic other steps of equipment or unit.
Description below is made to the part term or noun that are related in the embodiment of the present invention below：
ABS, Anti-locked Braking System, anti-lock braking system, it is that one kind has anti-skidding, anti-locking
The advantages that vehicle safety control system.The braking function of existing ordinary brake system, and can prevent wheel locked, automobile is existed
Remain to turn under on-position, ensure the brake direction steady of automobile, prevent break away and sideslip, be on current automobile most
Brake apparatus advanced, braking effect is optimal.
ESP, Electronic Stability Program, ESP, it passes through to being transmitted from each sensor
Vehicle running state information analyzed, then to ABS send correction instruction, come help vehicle maintain dynamic equilibrium.ESP systems
System is really a kind of TCS, and compared with other TCSs, ESP not only controls driving wheel, Er Qieke
Control driven pulley.ESP system is an important system on automobile, typically supports ABS and ASR function.It by from
The vehicle running state information that each sensor transmits is analyzed, and then correction instruction is sent to ABS, ASR, to help vehicle to tie up
Hold dynamic equilibrium.ESP can make vehicle keep optimal stability under various conditions, in ovdersteering or the feelings of understeer
Effect is more obvious under shape.
ESC, Electronic Speed Controller, body electronics stabilitrak, it is the new master of vehicle
Dynamic security system, it is further expanding for anti-lock braking system in automobiles (ABS) and TCS (TCS) function, and
On this basis, yaw rate sensor, direction finding acceleration transducer and steering wheel angle sensing when adding Vehicular turn traveling
Device, the driving force and brake force of wheel around being controlled by ECU, it is ensured that the lateral stability of vehicle traveling.The system by
Sensor, electronic control unit (ECU) and actuator three parts composition, automobilism shape is monitored by electronic control unit
State, engine and brakes to vehicle carry out intervention control.
Tire specification：The tire code name of international standard, the percentage of section width and aspect ratio is represented in units of millimeter.
Add below：Tyre type code name, rim diameter (inch), load factor (allowable bearing capacity quality code name), allowable operation speed code name.
Vehicle diagnosis, refer to the cause for determining vehicle failure, i.e., do not disintegrate or only pull down the condition of individual part in automobile
Under, search failed part position and find out the process of failure cause.Diagnostic techniques, refer to be used to finding and analyzing faulty components
And the technology of fault zone.
According to embodiments of the present invention, there is provided a kind of embodiment of the method for vehicle speed measurement method is, it is necessary to illustrate, attached
The step of flow of figure illustrates can perform in the computer system of such as one group computer executable instructions, though also,
So logical order is shown in flow charts, but in some cases, can be with different from shown by order execution herein
Or the step of description.
Fig. 1 is the flow chart of vehicle speed measurement method according to embodiments of the present invention, as shown in figure 1, this method is including as follows
Step：
Step S102, benchmark car speed value is obtained, wherein, benchmark car speed value is the speed determined based on default tire specification
Value；
Step S104, obtain the tire specification of speed automobile to be measured；
Step S106, according to benchmark car speed value and the tire specification of speed automobile to be measured, obtain the vehicle speed value of speed automobile to be measured.
By above-mentioned embodiment, can be obtained after benchmark car speed value is got with reference to the tire specification of speed automobile to be measured
To the vehicle speed value of speed automobile to be measured, to the tire of different size in the application, the car that can be determined according to default tire specification
Fast value obtains the vehicle speed value of speed automobile to be measured, it is not necessary to which the ABS/ESP systems of automobile support time radiodiagnosis x, can directly obtain
The vehicle speed value of speed automobile to be measured, reduce the confined condition for the speed for measuring automobile to be measured, and then solve to calculate in the prior art
The actual vehicle speed of automobile is by the more technical problem of limitation condition.
Optionally, above-mentioned default tire can be user from various size tire, select a certain tire as base
Quasi- tire, the size of the benchmark tire is as default tire specification size.Wherein, the tire specification of automobile can be multiple types
The tire specification of type, in this application, the tire specification that tire specification can be set to be international standard, represented in units of millimeter
The percentage of section width and aspect ratio.Add below：Tyre type code name, rim diameter (inch), load factor is (allowable to hold
Mounted mass code name), allowable operation speed code name.Such as：The tire code name of international standard, profile height and flat is represented in units of millimeter
The percentage of flat ratio, behind add：Tyre type code name, rim diameter (inch), load factor (allowable bearing capacity quality code name),
Allowable operation speed code name.Such as：175 to represent tyre width be 175MM in the 77H of 175/70R 14, and 70 represent the flat of tire sections
Than being 70%, i.e., profile height is the 70% of width, and rim diameter is 14 inches, load factor 77, and allowable operation speed is H levels.
For above-mentioned benchmark car speed value, can on the basis of tire vehicle speed value, can be with it is determined that during the benchmark car speed value
Determined by the wheel speed and rolling radius of benchmark tire.Optionally, obtaining benchmark car speed value includes：Gather the pre- of predetermined number
If tire specification tire wheel speed signal；Tire rolling radius corresponding to obtaining each default tire specification, is obtained pre-
If radius value；Benchmark car speed value is obtained based on wheel speed signal and pre-set radius value.The tire of default tire specification can be passed through
Wheel speed signal rolling radius corresponding with its determine benchmark car speed value, the wheel speed signal can be according to the specification of tire come really
It is fixed, for example, 100 kilometers/hour；The rolling radius of automobile tire can be data caused by tire rolling.Wherein, tire
Wheel speed signal and tire rolling radius can detect to obtain according to the sensor being arranged on tire, the detection in the application
Sensor can be a variety of, such as：Magnetoelectric sensor, hall sensor.It will can be detected by above-mentioned sensor
To signal be transferred in ABS system.
Optionally, according to benchmark car speed value and the tire specification of speed automobile to be measured, the vehicle speed value bag of speed automobile to be measured is obtained
Include：Tire rolling radius corresponding to obtaining default tire specification, obtain pre-set radius value；Obtain the tire rule of speed automobile to be measured
Tire rolling radius corresponding to lattice, obtain automobile radius value to be measured；Counted based on pre-set radius value and automobile radius value to be measured
Calculate, obtain target factor value；According to benchmark car speed value and target factor value, the vehicle speed value of speed automobile to be measured is obtained.
By above-mentioned embodiment, pre-set radius value and automobile radius value to be measured can be utilized to determine target factor value, should
Target factor value can be the ratio of automobile radius value to be measured and pre-set radius value.After the target factor value is obtained, Ke Yigen
According to target factor value and benchmark car speed value, the vehicle speed value of speed automobile to be measured is calculated, the speed of the speed automobile to be measured in the application
Value can be the product value of target factor value and benchmark car speed value.Pass through the specification of default tire and its correspondence in the application
Tire rolling radius and actual automobile to be measured tire rolling radius, obtain the vehicle speed value of speed automobile to be measured, optionally, this Shen
Please in can obtain the related specification of automobile to be measured by diagnostic equipment or other offline equipment and be pre-selected default
The specification of automobile tire, obtain above-mentioned target factor value.In addition, it can be determined by ABS system or ESC system default
The benchmark car speed value of tire, diagnostic equipment or offline equipment need not be set in ABS system in the application, it is possible to determine to be measured
The actual vehicle speed value of automobile.
Optionally, tire rolling radius corresponding to default tire specification, before obtaining pre-set radius value, method are being obtained
Also include：Judge whether tire specification and the default tire specification of speed automobile to be measured are identical；If the tire rule of speed automobile to be measured
Lattice are identical with default tire specification, determine vehicle speed value on the basis of the vehicle speed value of speed automobile to be measured；If the tire of speed automobile to be measured
Specification differs with default tire specification, performs tire rolling radius corresponding to obtaining default tire specification, is preset
The step of radius value.
Above-mentioned embodiment, can be that the judgement made operates, and passes through in the application it is determined that before pre-set radius value
Judge whether tire specification and the default tire specification of speed automobile to be measured are identical, can be true it is determined that in the case of its identical
Vehicle speed value on the basis of the vehicle speed value of fixed speed automobile to be measured.It is i.e. identical with default tire specification in the tire specification of speed automobile to be measured
When, it is identical to detect obtained pre-set radius value and automobile radius value to be measured, and the target factor value calculated is 1, this sample
Identical during actual vehicle speed value and benchmark car speed value in application.In addition, it is determined that speed automobile to be measured tire specification with it is default
Tire specification differ in the case of, above-mentioned embodiment can be used, you can with based on pre-set radius value and vapour to be measured
Car radius value is calculated, and obtains target factor value；According to benchmark car speed value and target factor value, the car of speed automobile to be measured is obtained
Speed value.
Optionally, obtaining the tire specification of speed automobile to be measured includes：Obtain the model of speed automobile to be measured；Based on vapour to be measured
The model of car is searched in presetting database, finds the tire specification of speed automobile to be measured, wherein, deposited in presetting database
Tire specification corresponding to multiple automobile models and each automobile model is stored up.
By above-mentioned embodiment, the tire specification of speed automobile to be measured can be accurately determined, in this application, can be with
Database is pre-set, the tire specification of the related model of automobile is stored in the database, each automobile model has correspondingly
Automobile tire specification data.The tire specification of automobile to be measured can be obtained by above-mentioned diagnostic equipment or offline equipment, can
Choosing, diagnostic equipment or offline equipment the tire specification data of automobile to be measured and default tire specification data can be sent to
In the vehicle speed value detection module of automobile to be measured.In addition, the ABS system of automobile can be by the car of the default automobile tire calculated
Speed value is sent into the vehicle speed value detection module of automobile to be measured.So, the vapour to be measured sent by diagnostic equipment or offline equipment
The tire specification data of car and default tire specification data, and the speed of default automobile tire that ABS system calculates
It is worth to the actual vehicle speed value of automobile to be measured.
Optionally, the tire of above-mentioned automobile to be measured can include the tire of multiple different sizes, for example, the four of automobile
In individual tire, there is the tire of two kinds of specifications, so can be different in same automobile assembling by the embodiment in the application
Under the tire condition of specification, the actual vehicle speed value of automobile to be measured is calculated.Diagnostic equipment or offline equipment are to automobile tire
Different size calculate respectively, so as to calculate automobile speed value.
By above-mentioned embodiment, offline device diagnostic is not supported in the different tire specification of vehicle assembling, ABS/ESC
In the case of, accurately calculate the actual vehicle speed value of automobile to be measured.Improve the accuracy for calculating automobile speed.
Here is to the embodiment in the application.
Fig. 2 is a kind of schematic diagram of optional vehicle speed measurement according to embodiments of the present invention, as shown in Fig. 2 it passes through
ABS/ESC gets the specification of multiple automobile tires, including tire specification 1, tire specification 2, tire specification 3,, tire specification
N, the wheel speed signal according to corresponding to the tire specification of multiple tires can obtain each tire specification, different tire specification are corresponding
Different wheel speed signals, wherein it is possible to pre-set tire specification on the basis of tire specification 1, so matching corresponding wheel
After tire specification, the wheel speed signal according to corresponding to the benchmark tire specification can determine other each tire specification.It is in addition, logical
ABS/ESC systems are crossed, wheel speed value corresponding to matching the tire specification and the tire specification of automobile tire can be utilized to calculate
The vehicle speed value of the tire specification, and the vehicle speed value of the automobile tire is sent to GES demand module, GES need
Modulus block can be used for the actual vehicle speed value for calculating automobile to be measured.
Optionally, the tire specification that automobile to be measured is got by diagnostic equipment or other offline equipment is (current in Fig. 2
The tire specification of assembling) and benchmark tire specification, in the tire specification and benchmark tire specification of the automobile to be measured, including vapour to be measured
The rolling radius of wheel tire and the rolling radius of benchmark tire.Diagnostic equipment or other offline equipment can be by automobile tires to be measured
Rolling radius and the rolling radius of benchmark tire be sent to GES demand module.
Optionally, the automobile tire to be measured that GES demand module can get diagnostic equipment or offline equipment is sent
Rolling radius and benchmark tire rolling radius and ABS/ESC send according to benchmark tire calculate vehicle speed value.And root
According to the tire specification data of acquisition and the vehicle speed value of benchmark tire, the actual vehicle speed value of automobile to be measured is obtained, as shown in Fig. 2 not
With tire specification correspond to different actual vehicle speed values, A1, A2 in fig. 2,, An be rolling radius according to tire specification
What rolling radius corresponding with benchmark tire specification determined.
In fig. 2, A1 can be 1, and it represents the rolling radius of tire specification 1 and the rolling radius phase of benchmark tire
Together, An can be with the ratio of tire specification n rolling radius and the rolling radius (i.e. the rolling radius of tire specification 1) of benchmark tire
Value.
It is determined that tire actual vehicle speed value when, can be carried out by the way that mode is calculated as below：
Step S21, vehicle configure the tire of n kind specifications, and tire specification size is (such as on the basis of setting wherein a certain tire
Tire specification 1 in Fig. 2), it is once (main that ABS/ESP only need to carry out vehicle speed value demarcation according to benchmark tire specification in demarcation
Vehicle GES is calculated according to the wheel speed signal of four tires and rolling radius).
The GES calculated is emitted to GES demand module by step S22, ABS/ESP.
Step S23, the tire specification that the car is actually assembled is sent to GES and needed by diagnostic equipment, offline equipment
Modulus block, can the tire that is configured of automatic identification vehicle after input vehicle numbering (i.e. the automobile model of above-described embodiment)
Specification.
Step S24, GES demand module receive the vehicle speed value calculated according to benchmark tire, the tire currently assembled
After specification and benchmark tire specification, the actual vehicle speed value of automobile to be measured is calculated.Wherein, calculating actual vehicle speed value can pass through
Step S25 is completed.
Step S25, calculating process are as follows：
In the case of the tire specification currently assembled with benchmark tire specification identical, actual vehicle speed value is determined and according to base
The vehicle speed value that quasi- tire calculates is identical.
In the case where the tire specification currently assembled differs with benchmark tire specification, the tire currently assembled is first determined
The ratio of specification and benchmark tire specification, obtains target factor value, then according to the target factor value and according to benchmark tire meter
The product of the vehicle speed value of calculation, obtain actual vehicle speed value.Wherein, actual vehicle speed value=benchmark car speed value x current matching tire rollings
Radius/benchmark tire rolling radius.
By above-mentioned embodiment, the situation of lower radiodiagnosis x can not be supported in assembling different size tire, ABS/ESC
Under, it is not required that multiple tire match calibration experiment is carried out to ABS/ESC, you can allow the module for receiving speed to receive accurately
GES, so as to obtain the actual vehicle speed value of automobile to be measured.
It should be noted that can be in such as one group of computer executable instructions the flow of accompanying drawing illustrates the step of
Performed in computer system, although also, show logical order in flow charts, in some cases, can be with not
The order being same as herein performs shown or described step.
The embodiment of the present application additionally provides a kind of vehicle speed measurement device, it is necessary to explanation, the speed of the embodiment of the present application
Measurement apparatus can be used for perform the embodiment of the present application provided be used for vehicle speed measurement method.The embodiment of the present application is carried below
The vehicle speed measurement device of confession is introduced.
Fig. 3 is the schematic diagram of vehicle speed measurement device according to embodiments of the present invention, as shown in figure 3, the device includes：First
Acquiring unit 31, for obtaining benchmark car speed value, wherein, benchmark car speed value is the speed determined based on default tire specification
Value；Second acquisition unit 33, for obtaining the tire specification of speed automobile to be measured；3rd acquiring unit 35, for according to control vehicle
The tire specification of speed value and speed automobile to be measured, obtain the vehicle speed value of speed automobile to be measured.
By above-mentioned embodiment, benchmark car speed value can be obtained by first acquisition unit 31, be obtained by second single
Member 33 obtains the tire specification of speed automobile to be measured, after benchmark car speed value is got, is obtained with reference to the tire specification of speed automobile to be measured
To the vehicle speed value of speed automobile to be measured, to the tire of different size in the application, the car that can be determined according to default tire specification
Fast value obtains the vehicle speed value of speed automobile to be measured, it is not necessary to which the ABS/ESP systems of automobile support time radiodiagnosis x, can directly obtain
The vehicle speed value of speed automobile to be measured, reduce the design conditions of the speed of speed automobile to be measured, and then solve to calculate vapour in the prior art
The actual vehicle speed of car is by the more technical problem of limitation condition.
Optionally, the 3rd acquiring unit includes：First acquisition module, for obtaining tire corresponding to default tire specification
Rolling radius, obtain pre-set radius value；Second acquisition module, rolled for obtaining tire corresponding to the tire specification of speed automobile to be measured
Dynamic radius, obtains automobile radius value to be measured；Determining module, based on being carried out based on pre-set radius value and automobile radius value to be measured
Calculate, obtain target factor value；3rd acquisition module, for according to benchmark car speed value and target factor value, obtaining speed automobile to be measured
Vehicle speed value.
Another optional embodiment, the device also include：Judging unit, for obtaining default tire specification pair
The tire rolling radius answered, before obtaining pre-set radius value, judge the tire specification of speed automobile to be measured and default tire specification
It is whether identical；Determining unit, if the tire specification for speed automobile to be measured is identical with default tire specification, determine vapour to be measured
Vehicle speed value on the basis of the vehicle speed value of car；Execution unit, if for the tire specification of speed automobile to be measured and default tire specification not
It is identical, tire rolling radius corresponding to obtaining default tire specification is performed, the step of obtaining pre-set radius value.
For above-mentioned embodiment, first acquisition unit includes：Acquisition module, for gathering the default wheel of predetermined number
The wheel speed signal of the tire of tire specification；4th acquisition module, for obtaining tire rolling corresponding to each default tire specification
Radius, obtain pre-set radius value；5th acquisition module, for obtaining benchmark car speed value based on wheel speed signal and pre-set radius value.
Optionally, second acquisition unit includes：6th acquisition module, for obtaining the model of speed automobile to be measured；Search mould
Block, searched for the model based on speed automobile to be measured in presetting database, find the tire specification of speed automobile to be measured,
Wherein, tire specification corresponding to multiple automobile models and each automobile model is stored in presetting database.
The vehicle speed measurement device includes processor and memory, above-mentioned first acquisition unit 31, second acquisition unit 33,
The grade of 3rd acquiring unit 35 as program unit storage in memory, by computing device storage in memory above-mentioned
Program unit realizes corresponding function.
Kernel is included in processor, is gone in memory to transfer corresponding program unit by kernel.Kernel can set one
Or more, generate configuration interface by adjusting kernel parameter.
Memory may include computer-readable medium in volatile memory, random access memory (RAM) and/
Or the form such as Nonvolatile memory, such as read-only storage (ROM) or flash memory (flash RAM), memory includes at least one deposit
Store up chip.
The embodiment of the present application provides a kind of storage medium, is stored thereon with program, real when the program is executed by processor
Existing vehicle speed measurement method.
The embodiment of the present application provides a kind of processor, and processor is used for operation program, wherein, program performs car when running
Fast measuring method.
The embodiment of the present application provides a kind of equipment, and equipment includes processor, memory and storage on a memory and can
The program run on a processor, following steps are realized during computing device program：Benchmark car speed value is obtained, wherein, control vehicle
Fast value is the vehicle speed value determined based on default tire specification；Obtain the tire specification of speed automobile to be measured；According to benchmark car speed value
With the tire specification of speed automobile to be measured, the vehicle speed value of speed automobile to be measured is obtained.
According to benchmark car speed value and the tire specification of speed automobile to be measured, obtaining the vehicle speed value of speed automobile to be measured includes：Obtain
Tire rolling radius corresponding to default tire specification, obtain pre-set radius value；The tire specification for obtaining speed automobile to be measured is corresponding
Tire rolling radius, obtain automobile radius value to be measured；Calculated, obtained based on pre-set radius value and automobile radius value to be measured
Target factor value；According to benchmark car speed value and target factor value, the vehicle speed value of speed automobile to be measured is obtained.
Tire rolling radius corresponding to default tire specification is being obtained, before obtaining pre-set radius value, method also includes：
Judge whether tire specification and the default tire specification of speed automobile to be measured are identical；If the tire specification of speed automobile to be measured is with presetting
Tire specification it is identical, determine vehicle speed value on the basis of the vehicle speed value of speed automobile to be measured；If the tire specification of speed automobile to be measured with it is pre-
If tire specification differ, perform tire rolling radius corresponding to obtaining default tire specification, obtain pre-set radius value
Step.
Obtaining benchmark car speed value includes：Gather the wheel speed signal of the tire of the default tire specification of predetermined number；Obtain
Tire rolling radius corresponding to each default tire specification, obtains pre-set radius value；Based on wheel speed signal and pre-set radius value
Obtain benchmark car speed value.
Obtaining the tire specification of speed automobile to be measured includes：Obtain the model of speed automobile to be measured；Type based on speed automobile to be measured
Number searched in presetting database, find the tire specification of speed automobile to be measured, wherein, stored in presetting database more
Tire specification corresponding to individual automobile model and each automobile model.Equipment herein can be server, PC, PAD, mobile phone
Deng.
Present invention also provides a kind of computer program product, when being performed on data processing equipment, is adapted for carrying out just
The program of beginningization there are as below methods step：Benchmark car speed value is obtained, wherein, benchmark car speed value is true based on default tire specification
Fixed vehicle speed value；Obtain the tire specification of speed automobile to be measured；According to benchmark car speed value and the tire specification of speed automobile to be measured, obtain
The vehicle speed value of speed automobile to be measured.
According to benchmark car speed value and the tire specification of speed automobile to be measured, obtaining the vehicle speed value of speed automobile to be measured includes：Obtain
Tire rolling radius corresponding to default tire specification, obtain pre-set radius value；The tire specification for obtaining speed automobile to be measured is corresponding
Tire rolling radius, obtain automobile radius value to be measured；Calculated, obtained based on pre-set radius value and automobile radius value to be measured
Target factor value；According to benchmark car speed value and target factor value, the vehicle speed value of speed automobile to be measured is obtained.
Tire rolling radius corresponding to default tire specification is being obtained, before obtaining pre-set radius value, method also includes：
Judge whether tire specification and the default tire specification of speed automobile to be measured are identical；If the tire specification of speed automobile to be measured is with presetting
Tire specification it is identical, determine vehicle speed value on the basis of the vehicle speed value of speed automobile to be measured；If the tire specification of speed automobile to be measured with it is pre-
If tire specification differ, perform tire rolling radius corresponding to obtaining default tire specification, obtain pre-set radius value
Step.
Obtaining benchmark car speed value includes：Gather the wheel speed signal of the tire of the default tire specification of predetermined number；Obtain
Tire rolling radius corresponding to each default tire specification, obtains pre-set radius value；Based on wheel speed signal and pre-set radius value
Obtain benchmark car speed value.
Obtaining the tire specification of speed automobile to be measured includes：Obtain the model of speed automobile to be measured；Type based on speed automobile to be measured
Number searched in presetting database, find the tire specification of speed automobile to be measured, wherein, stored in presetting database more
Tire specification corresponding to individual automobile model and each automobile model.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment
The part of detailed description, it may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, others can be passed through
Mode is realized.Wherein, device embodiment described above is only schematical, such as the division of the unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
Connect, can be electrical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment methods described of the present invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- A kind of 1. vehicle speed measurement method, it is characterised in that including：Benchmark car speed value is obtained, wherein, the benchmark car speed value is the vehicle speed value determined based on default tire specification；Obtain the tire specification of speed automobile to be measured；According to the benchmark car speed value and the tire specification of the speed automobile to be measured, the vehicle speed value of the acquisition speed automobile to be measured.
- 2. vehicle speed measurement method according to claim 1, it is characterised in that according to the benchmark car speed value and described to be measured The tire specification of speed automobile, obtaining the vehicle speed value of the speed automobile to be measured includes：Tire rolling radius corresponding to obtaining the default tire specification, obtains pre-set radius value；Tire rolling radius corresponding to obtaining the tire specification of the speed automobile to be measured, obtain automobile radius value to be measured；Calculated based on the pre-set radius value and the automobile radius value to be measured, obtain target factor value；According to the benchmark car speed value and the target factor value, the vehicle speed value of the acquisition speed automobile to be measured.
- 3. vehicle speed measurement method according to claim 2, it is characterised in that the default tire specification is corresponding obtaining Tire rolling radius, before obtaining pre-set radius value, methods described also includes：Judge whether tire specification and the default tire specification of the speed automobile to be measured are identical；If the tire specification of the speed automobile to be measured is identical with the default tire specification, the car of the speed automobile to be measured is determined Speed value is the benchmark car speed value；If the tire specification of the speed automobile to be measured differs with the default tire specification, perform and obtain the default wheel Tire rolling radius corresponding to tire specification, the step of obtaining pre-set radius value.
- 4. vehicle speed measurement method according to claim 1, it is characterised in that obtaining benchmark car speed value includes：Gather the wheel speed signal of the tire of the default tire specification of predetermined number；Tire rolling radius corresponding to obtaining each default tire specification, obtains pre-set radius value；The benchmark car speed value is obtained based on the wheel speed signal and the pre-set radius value.
- 5. vehicle speed measurement method according to claim 1, it is characterised in that obtain the tire specification bag of speed automobile to be measured Include：Obtain the model of the speed automobile to be measured；Model based on the speed automobile to be measured is searched in presetting database, finds the tire of the speed automobile to be measured Specification, wherein, tire specification corresponding to multiple automobile models and each automobile model is stored in the presetting database.
- A kind of 6. vehicle speed measurement device, it is characterised in that including：First acquisition unit, for obtaining benchmark car speed value, wherein, the benchmark car speed value is true based on default tire specification Fixed vehicle speed value；Second acquisition unit, for obtaining the tire specification of speed automobile to be measured；3rd acquiring unit, for the tire specification according to the benchmark car speed value and the speed automobile to be measured, treated described in acquisition Test the speed the vehicle speed value of automobile.
- 7. vehicle speed measurement device according to claim 6, it is characterised in that the 3rd acquiring unit includes：First acquisition module, for tire rolling radius corresponding to obtaining the default tire specification, obtain pre-set radius value；Second acquisition module, for tire rolling radius corresponding to obtaining the tire specification of the speed automobile to be measured, obtain to be measured Automobile radius value；Determining module, for being calculated based on the pre-set radius value and the automobile radius value to be measured, obtain target factor Value；3rd acquisition module, for according to the benchmark car speed value and the target factor value, obtaining the speed automobile to be measured Vehicle speed value.
- 8. vehicle speed measurement device according to claim 7, it is characterised in that described device also includes：Judging unit, for the tire rolling radius corresponding to obtain the default tire specification, obtain pre-set radius value it Before, judge whether the tire specification of the speed automobile to be measured and the default tire specification are identical；Determining unit, if the tire specification for the speed automobile to be measured is identical with the default tire specification, it is determined that described The vehicle speed value of speed automobile to be measured is the benchmark car speed value；Execution unit, if the tire specification for the speed automobile to be measured differs with the default tire specification, execution obtains Tire rolling radius corresponding to taking the default tire specification, the step of obtaining pre-set radius value.
- 9. vehicle speed measurement device according to claim 6, it is characterised in that first acquisition unit includes：Acquisition module, the wheel speed signal of the tire of the default tire specification for gathering predetermined number；4th acquisition module, for tire rolling radius corresponding to obtaining each default tire specification, obtain default half Footpath is worth；5th acquisition module, for obtaining the benchmark car speed value based on the wheel speed signal and the pre-set radius value.
- 10. vehicle speed measurement device according to claim 6, it is characterised in that second acquisition unit includes：6th acquisition module, for obtaining the model of the speed automobile to be measured；Searching modul, searched for the model based on the speed automobile to be measured in presetting database, find described treat Test the speed the tire specification of automobile, wherein, multiple automobile models and each automobile model pair are stored in the presetting database The tire specification answered.
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| CN201710578822.1A CN107600074B (en) | 2017-07-14 | 2017-07-14 | Vehicle speed measurement method and device |
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