CN107600074B - Vehicle speed measurement method and device - Google Patents
Vehicle speed measurement method and device Download PDFInfo
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- CN107600074B CN107600074B CN201710578822.1A CN201710578822A CN107600074B CN 107600074 B CN107600074 B CN 107600074B CN 201710578822 A CN201710578822 A CN 201710578822A CN 107600074 B CN107600074 B CN 107600074B
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Abstract
The invention discloses a kind of vehicle speed measurement method and devices.Wherein, this method comprises: obtaining benchmark car speed value, wherein benchmark car speed value is the vehicle speed value determined based on preset tire specification；Obtain the tire specification of speed automobile to be measured；According to the tire specification of benchmark car speed value and speed automobile to be measured, the vehicle speed value of speed automobile to be measured is obtained.The present invention solves the actual vehicle speed technical problem more by limitation condition for calculating automobile in the prior art.
Description
Technical field
The present invention relates to automobile technical fields, in particular to a kind of vehicle speed measurement method and device.
Background technique
In the related art, the tire of different size model often is selected since configuration is different with a vehicle, no
The rolling radius of same specification tire is different, and different tire rolling radius will will affect ABS (anti-lock braking system)/ESP (electricity
Sub- stability program) calculate after the accuracy of actual vehicle speed that obtains and export.
In order to calculate ABS or ESP and export accurate actual vehicle speed, following two method is generally used:
1. the ABS/ESP of corresponding different tire assembly different conditions.
2. the ABS/ESP of the vehicle assembly same state of different tires, by tire specification by way of lower radiodiagnosis x
It matches in ABS/ESP, ABS/ESP calls different tire specification when calculating speed signal.
But two kinds of above-mentioned technical solutions all have certain problems, wherein for scheme 1, in the version of ABS/ESP
This is there are many in the case where, it is necessary to and repeatedly automobile tire is demarcated, will increase the calibration expense of tire in this way, but also
It is not easy to manage；And for technical solution 2, it needs the ABS/ESP system of automobile to support offline diagnostic function, thus needs
ABS/ESP system increases offline diagnostic application, will increase its development, increases fee to develop, costly.
For the above-mentioned actual vehicle speed for the calculating automobile in the prior art technical problem more by limitation condition, at present still
It does not put forward effective solutions.
Summary of the invention
The embodiment of the invention provides a kind of vehicle speed measurement method and devices, at least to solve to calculate automobile in the prior art
Actual vehicle speed by the more technical problem of limitation condition.
According to an aspect of an embodiment of the present invention, a kind of vehicle speed measurement method is provided, comprising: obtain benchmark car speed
Value, wherein the benchmark car speed value is the vehicle speed value determined based on preset tire specification；Obtain the tire rule of speed automobile to be measured
Lattice；According to the tire specification of the benchmark car speed value and the speed automobile to be measured, the vehicle speed value of the speed automobile to be measured is obtained.
Further, it according to the tire specification of the benchmark car speed value and the speed automobile to be measured, obtains described to be measured
The vehicle speed value of automobile includes: to obtain the corresponding tire rolling radius of the preset tire specification, obtains pre-set radius value；It obtains
The corresponding tire rolling radius of tire specification of the speed automobile to be measured, obtains automobile radius value to be measured；Based on described default half
Diameter value and the automobile radius value to be measured are calculated, and target factor value is obtained；According to the benchmark car speed value and the target
Coefficient value obtains the vehicle speed value of the speed automobile to be measured.
Further, obtaining the corresponding tire rolling radius of the preset tire specification, obtain pre-set radius value it
Before, the method also includes: judge whether the tire specification of the speed automobile to be measured and the preset tire specification are identical；If
The tire specification of the speed automobile to be measured is identical as the preset tire specification, determines that the vehicle speed value of the speed automobile to be measured is
The benchmark car speed value；If the tire specification of the speed automobile to be measured and the preset tire specification be not identical, acquisition is executed
The corresponding tire rolling radius of the preset tire specification, the step of obtaining pre-set radius value.
Further, obtaining benchmark car speed value includes: the tire for acquiring the preset tire specification of preset quantity
Wheel speed signal；The corresponding tire rolling radius of each preset tire specification is obtained, pre-set radius value is obtained；Based on described
Wheel speed signal and the pre-set radius value obtain the benchmark car speed value.
Further, the tire specification for obtaining speed automobile to be measured includes: to 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 the preset database, finds the tire specification of the speed automobile to be measured, wherein
Multiple automobile models and the corresponding tire specification of each automobile model are stored in the presetting database.
According to another aspect of an embodiment of the present invention, a kind of vehicle speed measurement device is additionally provided, comprising: first obtains list
Member, for obtaining benchmark car speed value, wherein the benchmark car speed value is the vehicle speed value determined based on preset tire specification；The
Two acquiring units, for obtaining the tire specification of speed automobile to be measured；Third acquiring unit, for according to the benchmark car speed value and
The tire specification of the speed automobile to be measured obtains the vehicle speed value of the speed automobile to be measured.
Further, third acquiring unit includes: the first acquisition module, corresponding for obtaining the preset tire specification
Tire rolling radius, obtain pre-set radius value；Second obtains module, for obtaining the tire specification pair of the speed automobile to be measured
The tire rolling radius answered obtains 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 target factor value is obtained；Third obtains module, for according to the benchmark car speed value and the mesh
Coefficient value is marked, the vehicle speed value of the speed automobile to be measured is obtained.
Further, described device further include: judging unit, for obtaining the corresponding wheel of the preset tire specification
Tire rolling radius before obtaining pre-set radius value, judges that the tire specification of the speed automobile to be measured and the preset tire are advised
Whether lattice are identical；Determination unit, if the tire specification for the speed automobile to be measured is identical as the preset 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 and the preset tire specification be not identical, executes and obtains the corresponding tire rolling radius of the preset tire specification,
The step of obtaining pre-set radius value.
Further, first acquisition unit includes: acquisition module, for acquiring the preset tire rule of preset quantity
The wheel speed signal of the tire of lattice；4th obtains module, rolls for obtaining the corresponding tire of each preset tire specification
Radius obtains pre-set radius value；5th obtains 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: the 6th acquisition module, for obtaining the model of the speed automobile to be measured；
Searching module is searched in the preset database for the model based on the speed automobile to be measured, is found described to be measured
The tire specification of automobile, wherein store multiple automobile models in the presetting database and each automobile model is corresponding
Tire specification.
In embodiments of the present invention, it can be obtained after getting benchmark car speed value in conjunction with 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 vehicle that can be determined according to preset tire specification
Fast value obtains the vehicle speed value of speed automobile to be measured, and the ABS/ESP system for not needing automobile supports time radiodiagnosis x, can directly obtain
The vehicle speed value of speed automobile to be measured reduces the confined condition for measuring the speed of automobile to be measured, and then solves to calculate in the prior art
The actual vehicle speed of the automobile technical problem more by limitation condition.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of vehicle speed measurement method according to an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of optional vehicle speed measurement according to an embodiment of the present invention；
Fig. 3 is the schematic diagram of vehicle speed measurement device according to an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein is in addition to that can illustrate or retouch herein
Sequence other than those of stating is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that covering
Non-exclusive includes, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to clearly
Those of list to Chu step or unit, but may include be not clearly listed or for these process, methods, product or
The intrinsic other step or units of equipment.
Description below is made to part term or noun involved in the embodiment of the present invention below:
ABS, Anti-locked Braking System, anti-lock braking system, it is a kind of with anti-skidding, anti-locking
The advantages that vehicle safety control system.The braking function of existing ordinary brake system, and wheel locked can be prevented, so that automobile is existed
Remain to turn under on-position, guarantee the brake direction steady of automobile, prevent break away and sideslip, be on current automobile most
Advanced, the optimal brake apparatus of braking effect.
ESP, Electronic Stability Program, electronic stability program, it to from each sensor by transmitting
Vehicle running state information analyzed, then to ABS issue correction instruction, come help vehicle maintain dynamic equilibrium.ESP system
System is really a kind of traction control system, and compared with other traction control system, ESP not only controls driving wheel, Er Qieke
Control driven wheel.ESP system is an important system on automobile, usually supports the function of ABS and ASR.It by from
The vehicle running state information that each sensor transmits is analyzed, and then correction instruction is issued 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 are the novel masters of vehicle
Dynamic security system is further expanding for anti-lock braking system in automobiles (ABS) and traction control system (TCS) function, and
On this basis, Vehicular turn yaw rate sensor, direction finding acceleration transducer and steering wheel angle sensing when driving are increased
Device controls the driving force and brake force of front and rear, left and right wheel by ECU, it is ensured that the lateral stability of vehicle driving.The system by
Sensor, electronic control unit (ECU) and actuator three parts composition, monitor automobilism shape by electronic control unit
State, engine and braking system to vehicle carry out intervention control.
Tire specification: the tire code name of international standard indicates the percentage of section width and aspect ratio in millimeters.
It adds below: tyre type code name, rim diameter (inch), load factor (allowable bearing capacity quality code name), allowable operation speed code name.
Vehicle diagnosis, refers to the cause of determining vehicle failure, i.e., does not disintegrate or only remove the condition of individual part in automobile
Under, it searches failed part position and finds out the process of failure cause.Diagnostic techniques, referring to can be used to finding and analyzing faulty components
And the technology of fault zone.
According to embodiments of the present invention, a kind of embodiment of the method for vehicle speed measurement method is provided, it should be noted that attached
The step of process of figure illustrates can execute in a computer system such as a set of computer executable instructions, though also,
So logical order is shown in flow charts, but in some cases, it can be to be different from shown by sequence execution herein
Or the step of description.
Fig. 1 is the flow chart of vehicle speed measurement method according to an embodiment of the present invention, as shown in Figure 1, this method includes as follows
Step:
Step S102 obtains benchmark car speed value, wherein benchmark car speed value is the speed determined based on preset tire specification
Value；
Step S104 obtains the tire specification of speed automobile to be measured；
Step S106 obtains the vehicle speed value of speed automobile to be measured according to the tire specification of benchmark car speed value and speed automobile to be measured.
By above embodiment, can be obtained after getting benchmark car speed value in conjunction with 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 vehicle that can be determined according to preset tire specification
Fast value obtains the vehicle speed value of speed automobile to be measured, and the ABS/ESP system for not needing automobile supports time radiodiagnosis x, can directly obtain
The vehicle speed value of speed automobile to be measured reduces the confined condition for measuring the speed of automobile to be measured, and then solves to calculate in the prior art
The actual vehicle speed of the automobile technical problem more by limitation condition.
Optionally, above-mentioned preset tire can be user from various size tire, select a certain tire as base
Quasi- tire, the size of the benchmark tire is as preset tire specification size.Wherein, the tire specification of automobile can be multiple types
The tire specification of type can be set the tire specification that tire specification is international standard, indicate in millimeters in this application
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 indicates profile height and flat in millimeters
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 14 77H of 175/70R, and 70 indicate the flat of tire sections
Than being 70%, i.e., profile height is the 70% of width, and rim diameter is 14 inches, and load factor 77, allowable operation speed is H grades.
It, can the vehicle speed value of tire can be with when determining the benchmark car speed value on the basis of for above-mentioned benchmark car speed value
It is determined by the wheel speed and rolling radius of benchmark tire.Optionally, obtaining benchmark car speed value includes: the pre- of acquisition preset quantity
If tire specification tire wheel speed signal；The corresponding tire rolling radius of each preset tire specification is obtained, 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, which can be according to the specification of tire come really
It is fixed, for example, 100 kilometers/hour；The data that the rolling radius of automobile tire generates when can roll for tire.Wherein, tire
Wheel speed signal and tire rolling radius can be to be detected according to the sensor being arranged on tire, detection in the application
Sensor can be a variety of, such as: magnetoelectric sensor, hall sensor.It can be will test by above-mentioned sensor
To signal be transferred in ABS system.
Optionally, according to the tire specification of benchmark car speed value and speed automobile to be measured, the vehicle speed value packet of speed automobile to be measured is obtained
It includes: obtaining the corresponding tire rolling radius of preset tire specification, obtain pre-set radius value；Obtain the tire rule of speed automobile to be measured
The corresponding tire rolling radius of lattice obtains automobile radius value to be measured；Based on being carried out by pre-set radius value and automobile radius value to be measured
It calculates, obtains 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 embodiment, it can use pre-set radius value and automobile radius value to be measured determine target factor value, it should
Target factor value can be the ratio of automobile radius value and pre-set radius value to be measured.After obtaining the target factor value, 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 preset tire and its correspondence in the application
Tire rolling radius and practical automobile to be measured tire rolling radius, obtain the vehicle speed value of speed automobile to be measured, optionally, this Shen
Please in the related specification of automobile to be measured and pre-selected default can be obtained by diagnostic equipment or other offline equipment
The specification of automobile tire obtains above-mentioned target factor value.In addition, can be determined by ABS system or ESC system preset
The benchmark car speed value of tire, no setting is required in the application diagnostic equipment or offline equipment are in ABS system, so that it may determine to be measured
The actual vehicle speed value of automobile.
Optionally, the corresponding tire rolling radius of preset tire specification, before obtaining pre-set radius value, method are being obtained
Further include: judge whether the tire specification of speed automobile to be measured and preset tire specification are identical；If the tire of speed automobile to be measured is advised
Lattice are identical as preset tire specification, determine that the vehicle speed value of speed automobile to be measured is benchmark vehicle speed value；If the tire of speed automobile to be measured
Specification and preset tire specification be not identical, executes and obtains the corresponding tire rolling radius of preset tire specification, is preset
The step of radius value.
Above-mentioned embodiment can be before determining pre-set radius value, the judgement operation made, and pass through in the application
Judge whether tire specification and the preset tire specification of speed automobile to be measured are identical, it, can be true in the case where determining its identical situation
The vehicle speed value of fixed speed automobile to be measured is benchmark vehicle speed value.It is i.e. identical as preset tire specification in the tire specification of speed automobile to be measured
When, the pre-set radius value and automobile radius value to be measured detected be it is identical, calculated target factor value be 1, this sample
It is identical when actual vehicle speed value and benchmark car speed value in application.In addition, in the tire specification for determining speed automobile to be measured and presetting
The different situation of tire specification under, above-mentioned embodiment can be used, it can be based on pre-set radius value and vapour to be measured
Vehicle radius value is calculated, and target factor value is obtained；According to benchmark car speed value and target factor value, the vehicle of speed automobile to be measured is obtained
Speed value.
Optionally, the tire specification for obtaining speed automobile to be measured includes: to obtain the model of speed automobile to be measured；Based on vapour to be measured
The model of vehicle is searched in the preset database, finds the tire specification of speed automobile to be measured, wherein deposit in presetting database
Multiple automobile models and the corresponding tire specification of each automobile model are stored up.
By above embodiment, the tire specification of speed automobile to be measured can be accurately determined, it in this application, can be with
Database is preset, the tire specification of the related model of automobile is stored in the database, each automobile model has correspondence
Automobile tire specification data.It, can by the tire specification of above-mentioned diagnostic equipment or the available automobile to be measured of offline equipment
Choosing, the tire specification data of automobile to be measured and preset tire specification data can be sent to by diagnostic equipment or offline equipment
In the vehicle speed value detection module of automobile to be measured.In addition, the ABS system of automobile can be by the vehicle of calculated preset automobile tire
Fast value is sent in the vehicle speed value detection module of automobile to be measured.In this way, the vapour to be measured sent by diagnostic equipment or offline equipment
The speed of the tire specification data of vehicle and preset tire specification data and the calculated preset automobile tire of ABS system
Value obtains the actual vehicle speed value of automobile to be measured.
Optionally, the tire of above-mentioned automobile to be measured may include the tire of multiple and different specifications, for example, the four of automobile
In a tire, there are two types of the tires of specification, in this way can be different in the 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 separately, to calculate automobile speed value.
By above embodiment, different tire specification, ABS/ESC are assembled in vehicle and does not support offline device diagnostic
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 specific embodiment in the application.
Fig. 2 is a kind of schematic diagram of optional vehicle speed measurement according to an embodiment 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, according to the corresponding wheel speed signal of the available each tire specification of the tire specification of multiple tires, different tire specification is corresponding
Different wheel speed signal, wherein can preset tire specification 1 is benchmark tire specification, is being matched to corresponding wheel in this way
After tire specification, the corresponding wheel speed signal of other each tire specification can be determined according to the benchmark tire specification.In addition, logical
ABS/ESC system is crossed, be can use and be matched to the tire specification wheel speed value corresponding with the tire specification of automobile tire and calculate
The vehicle speed value of the tire specification, and the vehicle speed value of the automobile tire is sent to speed signal demand module, which needs
Modulus block can be used for calculating the actual vehicle speed value of automobile to be measured.
Optionally, the tire specification for getting automobile to be measured by diagnostic equipment or other offline equipment is (current in Fig. 2
The tire specification of assembly) 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 speed signal demand module.
Optionally, the available automobile tire to be measured sent to diagnostic equipment or offline equipment of speed signal demand module
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, represent the rolling radius of tire specification 1 and the rolling radius phase of benchmark tire
Together, An can be with the ratio of the rolling radius of tire specification n and the rolling radius (i.e. the rolling radius of tire specification 1) of benchmark tire
Value.
In the actual vehicle speed value for determining tire, can be carried out by following calculation:
Step S21, vehicle configure n kind specification tire, set wherein a certain kind tire as benchmark tire specification size (such as
Tire specification 1 in Fig. 2), it is primary (main that ABS/ESP only need to carry out vehicle speed value calibration according to benchmark tire specification in calibration
Vehicle speed signal is calculated according to the wheel speed signal of four tires and rolling radius).
Calculated speed signal is emitted to speed signal demand module by step S22, ABS/ESP.
The tire specification that the vehicle is actually assembled is sent to speed signal and is needed by step S23 by diagnostic equipment, offline equipment
Modulus block can the tire that is configured of automatic identification vehicle after input vehicle number (i.e. the automobile model of above-described embodiment)
Specification.
Step S24, the tire that speed signal demand module receives the vehicle speed value calculated according to benchmark tire, currently assembles
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 tire specification currently assembled situation identical with benchmark tire specification, actual vehicle speed value is determined and according to base
The vehicle speed value that quasi- tire calculates is identical.
Under the tire specification and the different situation of benchmark tire specification currently assembled, 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 obtains actual vehicle speed value.Wherein, actual vehicle speed value=benchmark car speed value x current matching tire rolls
Radius/benchmark tire rolling radius.
, can be in assembly different size tire by above embodiment, the case where ABS/ESC does not support lower radiodiagnosis x
Under, it does not need to carry out multiple tire match calibration experiment to ABS/ESC yet, the module for receiving speed can be allowed to receive accurately
Speed signal, to obtain the actual vehicle speed value of automobile to be measured.
It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
It is executed in computer system, although also, logical order is shown in flow charts, and it in some cases, can be with not
The sequence being same as herein executes shown or described step.
The embodiment of the present application also provides a kind of vehicle speed measurement devices, it should be noted that the speed of the embodiment of the present application
Measuring device can be used for executing provided by the embodiment of the present application for vehicle speed measurement method.The embodiment of the present application is mentioned below
The vehicle speed measurement device of confession is introduced.
Fig. 3 is the schematic diagram of vehicle speed measurement device according to an embodiment 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 preset tire specification
Value；Second acquisition unit 33, for obtaining the tire specification of speed automobile to be measured；Third acquiring unit 35, for according to control vehicle
The tire specification of speed value and speed automobile to be measured, obtains the vehicle speed value of speed automobile to be measured.
By above embodiment, benchmark car speed value can be obtained by first acquisition unit 31, be obtained by second single
The tire specification that member 33 obtains speed automobile to be measured obtains after getting benchmark car speed value in conjunction with 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 vehicle that can be determined according to preset tire specification
Fast value obtains the vehicle speed value of speed automobile to be measured, and the ABS/ESP system for not needing automobile supports time radiodiagnosis x, can directly obtain
The vehicle speed value of speed automobile to be measured reduces the design conditions of the speed of speed automobile to be measured, and then solves to calculate vapour in the prior art
The actual vehicle speed of the vehicle technical problem more by limitation condition.
Optionally, third acquiring unit includes: the first acquisition module, for obtaining the corresponding tire of preset tire specification
Rolling radius obtains pre-set radius value；Second obtains module, the corresponding tire rolling of the tire specification for obtaining speed automobile to be measured
Dynamic radius, obtains automobile radius value to be measured；Determining module, based on being carried out by pre-set radius value and automobile radius value to be measured
It calculates, obtains target factor value；Third obtains module, for obtaining speed automobile to be measured according to benchmark car speed value and target factor value
Vehicle speed value.
Another optional embodiment, the device further include: judging unit, for obtaining preset tire specification pair
The tire rolling radius answered before obtaining pre-set radius value, judges the tire specification and preset tire specification of speed automobile to be measured
It is whether identical；Determination unit determines vapour to be measured if the tire specification for speed automobile to be measured is identical as preset tire specification
The vehicle speed value of vehicle is benchmark vehicle speed value；Execution unit, if not for the tire specification of speed automobile to be measured and preset tire specification
It is identical, the step of executing and obtain the corresponding tire rolling radius of preset tire specification, obtain pre-set radius value.
For the above embodiment, first acquisition unit includes: acquisition module, for acquiring the preset wheel of preset quantity
The wheel speed signal of the tire of tire specification；4th obtains module, rolls for obtaining the corresponding tire of each preset tire specification
Radius obtains pre-set radius value；5th obtains module, for obtaining benchmark car speed value based on wheel speed signal and pre-set radius value.
Optionally, second acquisition unit includes: the 6th acquisition module, for obtaining the model of speed automobile to be measured；Search mould
Block is searched in the preset database for the model based on speed automobile to be measured, finds the tire specification of speed automobile to be measured,
Wherein, multiple automobile models and the corresponding tire specification of each automobile model are stored in presetting database.
The vehicle speed measurement device includes processor and memory, above-mentioned first acquisition unit 31, second acquisition unit 33,
Third acquiring units 35 etc. store in memory as program unit, are executed by processor stored in memory above-mentioned
Program unit realizes corresponding function.
Include kernel in processor, is gone in memory to transfer corresponding program unit by kernel.Kernel can be set one
Or more, configuration interface is generated by adjusting kernel parameter.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, if read-only memory (ROM) or flash memory (flash RAM), memory include that at least one is deposited
Store up chip.
The embodiment of the present application provides a kind of storage medium, is stored thereon with program, real when which is executed by processor
Existing vehicle speed measurement method.
The embodiment of the present application provides a kind of processor, and processor is for running program, wherein program executes vehicle when running
Fast measurement method.
The embodiment of the present application provides a kind of equipment, equipment include processor, memory and storage on a memory and can
The program run on a processor, processor performs the steps of when executing program obtains benchmark car speed value, wherein control vehicle
Fast value is the vehicle speed value determined based on preset 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 the tire specification of benchmark car speed value and speed automobile to be measured, the vehicle speed value for obtaining speed automobile to be measured includes: to obtain
The corresponding tire rolling radius of preset tire specification, obtains 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；It is calculated, is 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.
Obtaining the corresponding tire rolling radius of preset tire specification, before obtaining pre-set radius value, method further include:
Judge whether tire specification and the preset tire specification of speed automobile to be measured are identical；If the tire specification of speed automobile to be measured and default
Tire specification it is identical, determine speed automobile to be measured vehicle speed value be benchmark vehicle speed value；If the tire specification of speed automobile to be measured and pre-
If tire specification it is not identical, execute and obtain the corresponding tire rolling radius of preset tire specification, obtain pre-set radius value
Step.
Obtaining benchmark car speed value includes: the wheel speed signal for acquiring the tire of preset tire specification of preset quantity；It obtains
The corresponding tire rolling radius of each preset tire specification, obtains pre-set radius value；Based on wheel speed signal and pre-set radius value
Obtain benchmark car speed value.
The tire specification for obtaining speed automobile to be measured includes: to obtain the model of speed automobile to be measured；Type based on speed automobile to be measured
It number is searched in the preset database, finds the tire specification of speed automobile to be measured, wherein store in presetting database more
A automobile model and the corresponding tire specification of each automobile model.Equipment herein can be server, PC, PAD, mobile phone
Deng.
Present invention also provides a kind of computer program products, when executing on data processing equipment, are 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 preset tire specification
Fixed vehicle speed value；Obtain the tire specification of speed automobile to be measured；According to the tire specification of benchmark car speed value and speed automobile to be measured, obtain
The vehicle speed value of speed automobile to be measured.
According to the tire specification of benchmark car speed value and speed automobile to be measured, the vehicle speed value for obtaining speed automobile to be measured includes: to obtain
The corresponding tire rolling radius of preset tire specification, obtains 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；It is calculated, is 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.
Obtaining the corresponding tire rolling radius of preset tire specification, before obtaining pre-set radius value, method further include:
Judge whether tire specification and the preset tire specification of speed automobile to be measured are identical；If the tire specification of speed automobile to be measured and default
Tire specification it is identical, determine speed automobile to be measured vehicle speed value be benchmark vehicle speed value；If the tire specification of speed automobile to be measured and pre-
If tire specification it is not identical, execute and obtain the corresponding tire rolling radius of preset tire specification, obtain pre-set radius value
Step.
Obtaining benchmark car speed value includes: the wheel speed signal for acquiring the tire of preset tire specification of preset quantity；It obtains
The corresponding tire rolling radius of each preset tire specification, obtains pre-set radius value；Based on wheel speed signal and pre-set radius value
Obtain benchmark car speed value.
The tire specification for obtaining speed automobile to be measured includes: to obtain the model of speed automobile to be measured；Type based on speed automobile to be measured
It number is searched in the preset database, finds the tire specification of speed automobile to be measured, wherein store in presetting database more
A automobile model and the corresponding tire specification of each automobile model.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of vehicle speed measurement method characterized by comprising
Obtain benchmark car speed value, wherein the benchmark car speed value is the vehicle speed value determined based on preset tire specification；
Obtain the tire specification of speed automobile to be measured；
According to the tire specification of the benchmark car speed value and the speed automobile to be measured, the vehicle speed value of the speed automobile to be measured is obtained,
According to the tire specification of the benchmark car speed value and the speed automobile to be measured, the vehicle speed value packet of the speed automobile to be measured is obtained
It includes: obtaining the corresponding tire rolling radius of the preset tire specification, obtain pre-set radius value；Obtain the speed automobile to be measured
The corresponding tire rolling radius of tire specification, obtain automobile radius value to be measured；Based on the pre-set radius value and described to be measured
Automobile radius value is calculated, and target factor value is obtained；According to the benchmark car speed value and the target factor value, described in acquisition
The vehicle speed value of speed automobile to be measured.
2. vehicle speed measurement method according to claim 1, which is characterized in that obtaining, the preset tire specification is corresponding
Tire rolling radius, before obtaining pre-set radius value, the method also includes:
Judge whether tire specification and the preset tire specification of the speed automobile to be measured are identical；
If the tire specification of the speed automobile to be measured is identical as the preset tire specification, the vehicle 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 and the preset tire specification be not identical, execute and obtain the preset wheel
The corresponding tire rolling radius of tire specification, the step of obtaining pre-set radius value.
3. vehicle speed measurement method according to claim 1, which is characterized in that obtaining benchmark car speed value includes:
Acquire the wheel speed signal of the tire of the preset tire specification of preset quantity；
The corresponding tire rolling radius of each preset tire specification is obtained, pre-set radius value is obtained；
The benchmark car speed value is obtained based on the wheel speed signal and the pre-set radius value.
4. vehicle speed measurement method according to claim 1, which is characterized in that obtain the tire specification packet of speed automobile to be measured
It includes:
Obtain the model of the speed automobile to be measured；
Model based on the speed automobile to be measured is searched in the preset database, finds the tire of the speed automobile to be measured
Specification, wherein multiple automobile models and the corresponding tire specification of each automobile model are stored in the presetting database.
5. a kind of vehicle speed measurement device characterized by comprising
First acquisition unit, for obtaining benchmark car speed value, wherein the benchmark car speed value is true based on preset tire specification
Fixed vehicle speed value；
Second acquisition unit, for obtaining the tire specification of speed automobile to be measured；
Third acquiring unit, for the tire specification according to the benchmark car speed value and the speed automobile to be measured, obtain it is described to
Test the speed the vehicle speed value of automobile,
Third acquiring unit includes: the first acquisition module, rolls half for obtaining the corresponding tire of the preset tire specification
Diameter obtains pre-set radius value；Second obtains module, and the corresponding tire of the tire specification for obtaining the speed automobile to be measured rolls
Radius obtains automobile radius value to be measured；Determining module, for based on the pre-set radius value and the automobile radius value to be measured into
Row calculates, and obtains target factor value；Third obtains module, for obtaining according to the benchmark car speed value and the target factor value
Take the vehicle speed value of the speed automobile to be measured.
6. vehicle speed measurement device according to claim 5, which is characterized in that described device further include:
Judging unit, for obtaining the corresponding tire rolling radius of the preset tire specification, obtain pre-set radius value it
Before, judge whether the tire specification of the speed automobile to be measured and the preset tire specification are identical；
Determination unit, if the tire specification for the speed automobile to be measured is identical as the preset tire specification, described in determination
The vehicle speed value of speed automobile to be measured is the benchmark car speed value；
Execution unit, if not identical for the tire specification of the speed automobile to be measured and the preset tire specification, execution is obtained
The step of taking the corresponding tire rolling radius of the preset tire specification, obtaining pre-set radius value.
7. vehicle speed measurement device according to claim 5, which is characterized in that first acquisition unit includes:
Acquisition module, the wheel speed signal of the tire of the preset tire specification for acquiring preset quantity；
4th obtains module, for obtaining the corresponding tire rolling radius of each preset tire specification, obtains default half
Diameter value；
5th obtains module, for obtaining the benchmark car speed value based on the wheel speed signal and the pre-set radius value.
8. vehicle speed measurement device according to claim 5, which is characterized in that second acquisition unit includes:
6th obtains module, for obtaining the model of the speed automobile to be measured；
Searching module is searched in the preset database for the model based on the speed automobile to be measured, find it is described to
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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| CN201710578822.1A CN107600074B (en) | 2017-07-14 | 2017-07-14 | Vehicle speed measurement method and device |
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| CN108407812B (en) * | 2018-02-01 | 2020-02-21 | 北京长城华冠汽车技术开发有限公司 | Method and system for correcting wheel diameter after tire replacement |
| CN108615108B (en) * | 2018-04-17 | 2021-06-25 | 广汽乘用车有限公司 | Assembly line vehicle inspection control method and device |
| DE102020118041A1 (en) | 2020-07-08 | 2022-01-13 | Valeo Schalter Und Sensoren Gmbh | Method for determining or estimating the actual tire size of a motor vehicle tire using a mathematical model, computer program, computer-readable storage medium and assistance system |
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| JP2006117143A (en) * | 2004-10-22 | 2006-05-11 | Denso Corp | Communication system and wheel side radio transmission device |
| JP4324121B2 (en) * | 2005-02-24 | 2009-09-02 | 株式会社日立製作所 | Travel distance calculation system, travel distance calculation method, and travel distance calculation device |
| CN102975720B (en) * | 2011-09-02 | 2015-11-04 | 同济大学 | The longitudinal direction of car speed of a motor vehicle is calculated device, method and is used the vehicle of this device |
| WO2014016946A1 (en) * | 2012-07-26 | 2014-01-30 | トヨタ自動車株式会社 | Braking/driving force control device |
| CN103523022B (en) * | 2013-10-30 | 2016-02-10 | 吉林大学 | Hybrid vehicle vehicle speed estimation method |
| US20160161373A1 (en) * | 2014-12-03 | 2016-06-09 | The Goodyear Tire & Rubber Company | Tire lift-off propensity predictive system and method |
| DE102015012894A1 (en) * | 2015-10-06 | 2016-04-21 | Daimler Ag | Method for determining a speed of a vehicle |
| US9878721B2 (en) * | 2015-11-11 | 2018-01-30 | The Goodyear Tire & Rubber Company | Tire sensor-based robust mileage tracking system and method |
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