CN109931856A - Acquisition method/system of road evenness, evaluation system, medium and server-side - Google Patents
Acquisition method/system of road evenness, evaluation system, medium and server-side Download PDFInfo
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- CN109931856A CN109931856A CN201711348386.5A CN201711348386A CN109931856A CN 109931856 A CN109931856 A CN 109931856A CN 201711348386 A CN201711348386 A CN 201711348386A CN 109931856 A CN109931856 A CN 109931856A
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Abstract
The present invention provides a kind of acquisition method/system of road evenness, evaluation system, medium and server-side, the acquisition method of the road evenness include: receive traveling on road vehicle on three dimension directions acceleration information, Vehicle Speed information, vehicle real-time coordinates position and vehicle spring carry parameter；Parameter is carried according to the spring of acceleration information, Vehicle Speed information and vehicle, calculates the flatness index of the road；By the flatness index of road and vehicle real-time coordinates position Corresponding matching in chronological order.The present invention can make road management department comprehensively in real time grasp road network flatness situation, and with a road section with the increase of detection number, the precision and reliability of detection can be continuously improved, energy high degree reduces surface evenness testing cost, shortens the flatness detection period.
Description
Technical field
The invention belongs to road engineering detection technique fields, are related to a kind of acquisition method/system, more particularly to a kind of road
Acquisition method/system of road flatness, evaluation system, medium and server-side.
Background technique
China is gradually changed into large-scale highway maintenance period from large-scale highway construction period, as highway maintenance
The core of management system, the check and evaluation of pavement quality are one of currently the most important ones projects.Studies have shown that evenness of road surface
Degree accounts for the 40%-60% of pavement usage index total score, and China mainly passes through international roughness index and evaluates evenness of road surface at present
Degree.The IRI value on road surface is higher, and the flatness on road surface is poorer, and the poor road surface of flatness not only will affect the traffic safety of road,
Road-ability is reduced, the operating cost of driving is increased, it is also possible to accelerate pavement destruction, shorten curing cycle.
China mainly uses the IRI index of vehicle-mounted laser profiler measurement road at present, though test speed is fast, price
It is expensive.And this method is high to the degree of dependence of professional technician, it can not large-scale promotion.Highway maintenance department is generally according to feeding
Cycle planning, the IRI index of routine test highway are protected, and detection technique is to varying degrees by human and material resources and financial resources
Limitation can not carry out comprehensive flatness situation real-time monitoring to network of highways.
Therefore, a kind of acquisition method/system of road evenness, evaluation system, medium and server-side how are provided, with solution
Certainly existing road detection technique is limited by human and material resources and financial resources to varying degrees, and can not be carried out to network of highways complete
The defects of flatness situation real-time monitoring in face, those skilled in the art's technical problem urgently to be resolved is had become in fact.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of acquisition sides of road evenness
Method/system, evaluation system, medium and server-side, for solving existing road detection technique to varying degrees by manpower, object
The limitation of power and financial resources, and can not to network of highways carry out comprehensive flatness situation real-time monitoring the problem of.
In order to achieve the above objects and other related objects, one aspect of the present invention provides a kind of acquisition side of road evenness
Method, comprising: receive traveling on road vehicle in the acceleration information on three dimension directions, Vehicle Speed information, vehicle
The spring of real-time coordinates position and vehicle carries parameter；It is carried and is joined according to the spring of acceleration information, Vehicle Speed information and vehicle
Number, calculates the flatness index of the road；The flatness index of road and vehicle real-time coordinates position is corresponding in chronological order
Matching.
In one embodiment of the invention, vehicle is travelled on the road in the acceleration on three dimension directions receiving
After spending information and Vehicle Speed information, the evaluation method of the road evenness further include: filter out Vehicle Speed
The information not velocity information in pre-set velocity data area and its corresponding acceleration information；It filters out vehicle and special shape occurs
Acceleration information when condition on three corresponding dimension directions；Extract the acceleration information on longitudinal direction.
In one embodiment of the invention, the evaluation method of the road evenness further include: to the longitudinal direction side extracted
Upward acceleration information is filtered and denoising.
In one embodiment of the invention, it includes the spring carried mass of a quarter vehicle, spring that the spring of the vehicle, which carries parameter,
The damped coefficient that the stiffness coefficient and spring of mounted mass carry.
In one embodiment of the invention, the step of the flatness index for calculating the road in further include: calculate from 0
The i-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction into t moment；Wherein, i is greater than 0, is less than
T, t are greater than 1；From 0 into t moment the i-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction meter
Calculate formula are as follows:Wherein, yiFor from 0 into t moment the i-th moment spring carried mass with it is non-
The relative displacement of spring carried mass just in a longitudinal direction, yi-1For from 0 into t moment the (i-1)-th moment spring carried mass and non-spring charge material
The relative displacement of amount just in a longitudinal direction, ksFor the stiffness coefficient of spring carried mass, msFor spring carried mass, csThe damping carried for spring
Coefficient, ai-1It is the (i-1)-th moment vehicle between the acceleration on longitudinal direction, time of the Δ t between the i-th moment and the (i-1)-th moment
Every.
In one embodiment of the invention, the flatness index of roadWherein, L is from 0 to t moment vehicle
The distance of traveling.
Another aspect of the present invention provides a kind of acquisition system of road evenness, comprising: communication module, for receiving traveling
On road vehicle on three dimension directions acceleration information, Vehicle Speed information, vehicle real-time coordinates position and
The spring of vehicle carries parameter；Computing module, for carrying parameter according to the spring of acceleration information, Vehicle Speed information and vehicle,
Calculate the flatness index of the road；Matching module, for the flatness index of road and vehicle real-time coordinates position will to be pressed
Time sequencing Corresponding matching.
Another aspect of the invention provides a kind of medium, is stored thereon with computer program, when which is executed by processor
Realize the acquisition method of the road evenness.
The present invention also provides a kind of server-sides, comprising: processor and memory；The memory is for storing computer journey
Sequence, the processor is used to execute the computer program of the memory storage, so that the server-side executes the road and puts down
The acquisition method of whole degree.
Last aspect of the present invention provides a kind of evaluation system of road evenness, comprising: client, for acquiring traveling
Vehicle is in the acceleration information on three dimension directions, Vehicle Speed information, vehicle real-time coordinates position on road, and
The spring for receiving vehicle carries parameter, and is transmitted；Cloud, for storing traveling that the client the is transmitted vehicle on road
In on three dimension directions acceleration information, Vehicle Speed information, vehicle real-time coordinates position and vehicle spring carry ginseng
Number；Server-side, for executing the acquisition method of the road evenness；Visualization Platform corresponds in chronological order for showing
The flatness index of matched road and vehicle real-time coordinates position, to provide road maintenance Sectoral assessment.
As described above, acquisition method/system of road evenness of the invention, evaluation system, medium and server-side, have
Below
The utility model has the advantages that
Acquisition method/system of road evenness of the present invention, evaluation system, medium and server-side are for centainly travelling
Vehicle under speed collects the acceleration signal of vertical direction using vehicle intelligent mobile phone fixed vertically, and by calculating mould
Type obtains the international roughness index of running section, to realize that each move vehicle can be likely to become surface evenness detection
Terminal can make road management department grasp the flatness situation of road network in real time comprehensively, and with a road section with detection time
The precision and reliability of detection can be continuously improved in several increases, and energy high degree reduces surface evenness testing cost, shorten flat
Whole degree detection cycle.
Detailed description of the invention
Fig. 1 is shown as flow diagram of the acquisition method of road evenness of the invention in an embodiment.
Fig. 2A is shown as theory structure schematic diagram of the acquisition system of road evenness of the invention in an embodiment.
Fig. 2 B is shown as the integration model schematic diagram of a quarter vehicle and smart phone of the invention.
Fig. 3 is shown as the outdoor scene schematic diagram of the evaluation system of road evenness of the invention.
Component label instructions
The acquisition system of 2 road evenness
21 communication modules
22 filtering modules
23 preprocessing modules
24 computing modules
25 matching modules
The evaluation system of 3 road evenness
31 clients
32 clouds
33 server-sides
34 Visualization Platforms
S11~S15 step
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
It should be noted that illustrating the basic structure that only the invention is illustrated in a schematic way provided in following embodiment
Think, only shown in schema then with related component in the present invention rather than component count, shape and size when according to actual implementation
Draw, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its assembly layout kenel
It is likely more complexity.
Embodiment one
The present embodiment provides a kind of acquisition methods of road evenness, comprising:
Receive traveling on road vehicle in the acceleration information on three dimension directions, Vehicle Speed information, vehicle
The spring of real-time coordinates position and vehicle carries parameter；
Parameter is carried according to the spring of acceleration information, Vehicle Speed information and vehicle, the flatness for calculating the road refers to
Number；
By the flatness index of road and vehicle real-time coordinates position Corresponding matching in chronological order.
The acquisition method of road evenness provided by the present embodiment is described in detail below with reference to diagram.It please join
Fig. 1 is read, flow diagram of the acquisition method of road evenness in an embodiment is shown as.As shown in Figure 1, the road is flat
The acquisition method of whole degree specifically includes following steps:
S11 receives traveling vehicle on road and believes in the acceleration information on three dimension directions, Vehicle Speed
The spring of breath, vehicle real-time coordinates position and vehicle carries parameter.In the present embodiment, vehicle is in the acceleration on three dimension directions
Information, Vehicle Speed information, vehicle real-time coordinates position and vehicle spring carry parameter and derive from client.In actual reality
In existing mode, the client is, for example, the electronic equipments such as smart phone, tablet computer, laptop.In the present embodiment,
Vehicle real-time coordinates position is the latitude and longitude coordinates of vehicle.The spring of the vehicle carries the spring that parameter includes a quarter vehicle
The damped coefficient that mounted mass, the stiffness coefficient of spring carried mass and spring carry.In the present embodiment, three dimension directions are X, Y, Z tri-
A direction.
S12 filters out velocity information of the Vehicle Speed information not in pre-set velocity data area and its corresponding
Acceleration information filters out the acceleration information on three dimension directions corresponding when vehicle generation special status, and extracts
Acceleration information on longitudinal direction out.In the present embodiment, pre-set velocity data area is 40km/h-90km/h.Vehicle hair
Raw special status includes vehicle brake, vehicle collision, and vehicle, which jolts, etc. results in the special shape of X and Z-direction sudden change of acceleration
Condition.
S13, to the acceleration information on the longitudinal direction (Y-direction) extracted in S12 step be filtered and denoising at
Reason.
S14 carries parameter according to the spring of acceleration information, Vehicle Speed information and vehicle, calculates from 0 into t moment
The flatness index of the relative displacement just in a longitudinal direction of i-th moment spring carried mass and nonspring carried mass and the road.At this
In embodiment, from 0 into t moment the i-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction meter
Calculate formula are as follows:
Wherein, yiFor from 0 into t moment the i-th moment spring carried mass and nonspring carried mass just in a longitudinal direction opposite
Displacement, yi-1For from 0 the (i-1)-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction into t moment,
ksFor the stiffness coefficient of spring carried mass, msFor spring carried mass, csFor the damped coefficient that spring carries, ai-1It is the (i-1)-th moment vehicle in vertical
Acceleration on direction, time interval of the Δ t between the i-th moment and the (i-1)-th moment；I is greater than 0, is less than t, and t is greater than 1.
The calculation formula of the flatness index IRI of road is as follows:
Wherein, L is the distance from 0 to t moment vehicle driving.In the present embodiment, it is counted every 100 meters according to formula (2)
Calculate the flatness index IRI of road.
S15, by the flatness index of road and vehicle real-time coordinates position Corresponding matching in chronological order.
The present embodiment also provides a kind of medium (i.e. computer readable storage medium), is stored thereon with computer program, should
The acquisition method of above-mentioned road evenness is realized when program is executed by processor.Those of ordinary skill in the art will appreciate that: it is real
The all or part of the steps of existing above-mentioned each method embodiment can be completed by the relevant hardware of computer program.Meter above-mentioned
Calculation machine program can be stored in a computer readable storage medium.When being executed, execute includes that above-mentioned each method is real to the program
The step of applying；And storage medium above-mentioned includes: that ROM, RAM, magnetic or disk etc. are various can store program code
Medium.
Embodiment two
The present embodiment provides a kind of acquisition systems of road evenness, comprising:
Communication module, for receive traveling on road vehicle in acceleration information, vehicle row on three dimension directions
The spring for sailing velocity information, vehicle real-time coordinates position and vehicle carries parameter；
Computing module calculates the road for carrying parameter according to the spring of acceleration information, Vehicle Speed information and vehicle
The flatness index on road；
Matching module, for will be corresponding in chronological order by the flatness index of road and vehicle real-time coordinates position
Match.
The acquisition system of road evenness provided by the present embodiment is described in detail below with reference to diagram.It needs
What is illustrated is, it should be understood that the division of the modules of the above acquisition system is only a kind of division of logic function, practical to realize
When can completely or partially be integrated on a physical entity, can also be physically separate.And these modules can be all with soft
Part is realized by way of processing element calls；It can also all realize in the form of hardware；Place can be passed through with part of module
The form for managing element calling software realizes that part of module passes through formal implementation of hardware.For example, x module can be individually to set up
Processing element, also can integrate and realized in some chip of above-mentioned apparatus, in addition it is also possible in the form of program code
It is stored in the memory of above-mentioned apparatus, is called by some processing element of above-mentioned apparatus and executed the function of the above x module.
The realization of other modules is similar therewith.Furthermore these modules completely or partially can integrate together, can also independently realize.This
In the processing element can be a kind of integrated circuit, the processing capacity with signal.During realization, the above method
Each step or the above modules can pass through the integrated logic circuit of the hardware in processor elements or the finger of software form
It enables and completing.
For example, the above module can be arranged to implement one or more integrated circuits of above method, such as:
One or more specific integrated circuits (ApplicationSpecificIntegratedCircuit, abbreviation ASIC), or, one
Or multi-microprocessor (digitalsingnalprocessor, abbreviation DSP), or, one or more field-programmable gate array
Arrange (FieldProgrammableGateArray, abbreviation FPGA) etc..For another example, when some above module is dispatched by processing element
When the form of program code is realized, which can be general processor, such as central processing unit
(CentralProcessingUnit, abbreviation CPU) or it is other can be with the processor of caller code.For another example, these modules can
To integrate, realized in the form of system on chip (system-on-a-chip, abbreviation SOC).
Fig. 2A is please referred to, theory structure schematic diagram of the acquisition system of road evenness in an embodiment is shown as.Such as
Shown in Fig. 2A, the acquisition system 2 of the road evenness includes communication module 21, filtering module 22, preprocessing module 23, calculates
Module 24 and matching module 25.
The communication module 21 receive traveling on road vehicle in acceleration information, vehicle row on three dimension directions
The spring for sailing velocity information, vehicle real-time coordinates position and vehicle carries parameter.In the present embodiment, vehicle is on three dimension directions
Acceleration information, Vehicle Speed information, vehicle real-time coordinates position and vehicle spring carry parameter and derive from client.Institute
The acquisition system for stating road evenness is connect with client communication.In actual implementation, the client is, for example, intelligence
The electronic equipments such as energy mobile phone, tablet computer, laptop.In the present embodiment, vehicle real-time coordinates position is vehicle
Latitude and longitude coordinates.The spring of the vehicle carries the stiffness coefficient that parameter includes the spring carried mass of a quarter vehicle, spring carried mass
And the damped coefficient that spring carries.In the present embodiment, three dimension directions are X, tri- directions Y, Z.In the present embodiment, mould is communicated
Any one in 3G, 4G or 5G module can be used in block 21.
The filtering module 22 coupled with the communication module 21 is for filtering out Vehicle Speed information not in default speed
The velocity information in data area and its corresponding acceleration information are spent, vehicle is filtered out and occurs corresponding three when special status
Acceleration information on a dimension direction, and extract the acceleration information on longitudinal direction.In the present embodiment, pre-set velocity
Data area is 40km/h-90km/h.It includes vehicle brake that special status, which occurs, for vehicle, vehicle collision, and vehicle, which jolts, etc. causes
In the special status of X and Z-direction sudden change of acceleration.
The preprocessing module 23 coupled with the filtering module 22 is to the longitudinal direction extracted in the filtering module 22
Acceleration information in (Y-direction) is filtered and denoising.
The computing module 24 coupled with the communication module 21 and preprocessing module 23 is used for according to acceleration information, vehicle
The spring of driving speed information and vehicle carries parameter, is calculating from 0 into t moment the i-th moment spring carried mass and nonspring carried mass
The flatness index of relative displacement and the road on longitudinal direction.In the present embodiment, from 0, into t moment, the i-th moment spring is carried
The calculation formula of quality and the relative displacement of nonspring carried mass just in a longitudinal direction are as follows:
Wherein, yiFor from 0 the i-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction into t moment, yi-1
For from 0 the (i-1)-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction into t moment, ksFor spring load
The stiffness coefficient of quality, msFor spring carried mass, csFor the damped coefficient that spring carries, ai-1It is the (i-1)-th moment vehicle on longitudinal direction
Acceleration, time interval of the Δ t between the i-th moment and the (i-1)-th moment；I is greater than 0, is less than t, and t is greater than 1.Fig. 2 B is please referred to,
It is shown as the integration model schematic diagram of a quarter vehicle and smart phone.As shown in Figure 2 B, three dimension direction X, Y, Z axis, and
Relative displacement y on longitudinal direction.
The calculation formula of the flatness index IRI of road is notWherein, L is from 0 to t moment vehicle row
The distance sailed.In the present embodiment, the flatness index IRI of road is calculated according to formula (2) every 100 meters.
The matching module 25 coupled with the communication module 21 and computing module 24 be used for by the flatness index of road with
Vehicle real-time coordinates position Corresponding matching in chronological order.
Embodiment three
The present embodiment provides a kind of server-sides, comprising: processor, memory, transceiver, communication interface and system bus；
Memory and communication interface connect with processor and transceiver by system bus and complete mutual communication, and memory is used for
Computer program is stored, communication interface is used for and other equipment are communicated, and processor and transceiver are for running computer journey
Sequence makes server-side execute each step of the acquisition method of road evenness as above.
System bus mentioned above can be Peripheral Component Interconnect standard (PeripheralPomponentInterconn
Ect, abbreviation PCI) and bus or expanding the industrial standard structure (ExtendedIndustryStandardArchitecture, referred to as
EISA) bus etc..The system bus can be divided into address bus, data/address bus, control bus etc..For convenient for indicating, in figure only
It is indicated with a thick line, it is not intended that an only bus or a type of bus.Communication interface is for realizing database
Communication between access mechanism and other equipment (such as client, read-write library and read-only library).Memory may be comprising depositing at random
Access to memory (RandomAccessMemory, abbreviation RAM), it is also possible to further include nonvolatile memory (non-
Volatilememory), a for example, at least magnetic disk storage.
Above-mentioned processor can be general processor, including central processing unit (CentralProcessingUnit, letter
Claim CPU), network processing unit (NetworkProcessor, abbreviation NP) etc.；It can also be digital signal processor
(DigitalSignalProcessing, abbreviation DSP), specific integrated circuit (ApplicationSpecificIntegratedC
Ircuit, abbreviation ASIC), field programmable gate array (Field-ProgrammableGateArray, abbreviation FPGA) or
Other programmable logic device, discrete gate or transistor logic, discrete hardware components.
Example IV
The present embodiment provides a kind of evaluation systems of road evenness, comprising:
Client, for acquire traveling on road vehicle in the acceleration information on three dimension directions, vehicle driving
Velocity information, vehicle real-time coordinates position, and the spring load parameter of vehicle is received, and transmitted；
Cloud, for store traveling that the client is transmitted on road vehicle in the acceleration on three dimension directions
The spring for spending information, Vehicle Speed information, vehicle real-time coordinates position and vehicle carries parameter；
Server-side, for executing the acquisition method of road evenness；
Visualization Platform, for showing the flatness index and vehicle real-time coordinates of the road of Corresponding matching in chronological order
Position, to provide road maintenance Sectoral assessment.
Referring to Fig. 3, being shown as the outdoor scene schematic diagram of the evaluation system of road evenness.As shown in figure 3, the road is flat
The evaluation system 3 of whole degree includes client 31, cloud 32, server-side 33 and Visualization Platform 34.
The client 31 for acquire travel on road vehicle in acceleration information, vehicle on three dimension directions
Driving speed information, vehicle real-time coordinates position, and receive the spring load parameter of vehicle.In the present embodiment, the client 31
Using smart phone.Smart phone is fixed in mobile phone support vertically, and secures a bracket to the gear in front of driver
On wind glass or beside instrument board.Installation process notices that mobile phone is placed vertically, and securely fixes, when vehicle being avoided to pitch
Mobile phone and bracket generate relative displacement.Vehicle real-time coordinates position is the latitude and longitude coordinates of vehicle.The spring of the vehicle carries
Parameter includes the damped coefficient that the spring carried mass of a quarter vehicle, the stiffness coefficient of spring carried mass and spring carry.
It is used to store traveling that the client is transmitted in road with the cloud 32 of the client 31 communication connection
Vehicle on three dimension directions acceleration information, Vehicle Speed information, vehicle real-time coordinates position and vehicle spring
Carry parameter.
It is used to execute the acquisition of road evenness described in embodiment one with the server-side 33 of the cloud 32 communication connection
S11 to S15 in method.
It is used to show the road of Corresponding matching in chronological order with the Visualization Platform 34 of the server-side 33 communication connection
Flatness index and vehicle real-time coordinates position, to provide road maintenance Sectoral assessment.In the present embodiment, Visualization Platform
34 can be GIS platform.
In conclusion acquisition method/system of road evenness of the present invention, evaluation system, medium and server-side pair
Vehicle under certain travel speed collects the acceleration signal of vertical direction using vehicle intelligent mobile phone fixed vertically, and
The international roughness index of running section is obtained by computation model, to realize that each move vehicle can be likely to become road surface
Flatness detection terminal can make road management department grasp the flatness situation of road network, and same a road section in real time comprehensively
With the increase of detection number, the precision and reliability of detection can be continuously improved, it can high degree reduction surface evenness detection
Cost shortens the flatness detection period.So the present invention effectively overcomes various shortcoming in the prior art and has high industrial
Utility value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of acquisition method of road evenness characterized by comprising
It is real in acceleration information, Vehicle Speed information, the vehicle on three dimension directions to receive traveling vehicle on road
When coordinate position and vehicle spring carry parameter；
Parameter is carried according to the spring of acceleration information, Vehicle Speed information and vehicle, calculates the flatness index of the road；
By the flatness index of road and vehicle real-time coordinates position Corresponding matching in chronological order.
2. the acquisition method of road evenness according to claim 1, which is characterized in that travel on the road receiving
Upper vehicle on three dimension directions acceleration information and Vehicle Speed information after, the evaluation side of the road evenness
Method further include:
Filter out velocity information and its corresponding acceleration letter of the Vehicle Speed information not in pre-set velocity data area
Breath；
Filter out the acceleration information on three dimension directions corresponding when vehicle generation special status；
Extract the acceleration information on longitudinal direction.
3. the acquisition method of road evenness according to claim 2, which is characterized in that the evaluation of the road evenness
Method further include:
Acceleration information on the longitudinal direction extracted is filtered and denoising.
4. the acquisition method of road evenness according to claim 3, which is characterized in that the spring of the vehicle carries parameter packet
Include the damped coefficient that the spring carried mass of a quarter vehicle, the stiffness coefficient of spring carried mass and spring carry.
5. the acquisition method of road evenness according to claim 4, which is characterized in that described to calculate the smooth of the road
In the step of spending index further include:
Calculate the i-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction into t moment from 0；Wherein,
I is greater than 0, is less than t, and t is greater than 1；
From 0 into t moment the i-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction calculation formula
Are as follows:
Wherein, yiFor from 0 the i-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction into t moment,
yi-1For from 0 the (i-1)-th moment spring carried mass and the relative displacement of nonspring carried mass just in a longitudinal direction into t moment, ksFor spring
The stiffness coefficient of mounted mass, msFor spring carried mass, csFor the damped coefficient that spring carries, ai-1It is the (i-1)-th moment vehicle in longitudinal direction
On acceleration, time interval of the Δ t between the i-th moment and the (i-1)-th moment.
6. the acquisition method of road evenness according to claim 5, which is characterized in that
Wherein, L is the distance from 0 to t moment vehicle driving.
7. a kind of acquisition system of road evenness characterized by comprising
Communication module, it is fast in the acceleration information on three dimension directions, vehicle driving for receiving traveling vehicle on road
The spring for spending information, vehicle real-time coordinates position and vehicle carries parameter；
Computing module calculates the road for carrying parameter according to the spring of acceleration information, Vehicle Speed information and vehicle
Flatness index；
Matching module, for will be by the flatness index of road and vehicle real-time coordinates position Corresponding matching in chronological order.
8. a kind of medium, is stored thereon with computer program, which is characterized in that realize that right is wanted when the program is executed by processor
The acquisition method of road evenness described in asking any one of 1 to 6.
9. a kind of server-side characterized by comprising processor and memory；
The memory is used to execute the computer journey of the memory storage for storing computer program, the processor
Sequence, so that the server-side executes the acquisition method of the road evenness as described in any one of claims 1 to 6.
10. a kind of evaluation system of road evenness characterized by comprising
Client, for acquire traveling on road vehicle in the acceleration information on three dimension directions, Vehicle Speed
Information, vehicle real-time coordinates position, and the spring load parameter of vehicle is received, and transmitted；
Cloud is believed for storing traveling that the client the is transmitted vehicle on road in the acceleration on three dimension directions
Breath, Vehicle Speed information, vehicle real-time coordinates position and vehicle spring carry parameter；
Server-side, for executing the acquisition method of the road evenness as described in any one of claims 1 to 6；
Visualization Platform, for showing flatness index and the vehicle real-time coordinates position of the road of Corresponding matching in chronological order
It sets, to provide road maintenance Sectoral assessment.
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| CN110820495A (en) * | 2019-11-20 | 2020-02-21 | 上海海事大学 | Method and system for detecting flatness of road surface of non-motor vehicle and computer storage medium |
| CN111021210A (en) * | 2019-12-25 | 2020-04-17 | 王立迎 | Road flatness detection device |
| CN111504436A (en) * | 2020-04-17 | 2020-08-07 | 清华大学 | Vehicle load and road condition monitoring method and device based on vehicle vibration data |
| CN111581592A (en) * | 2019-08-02 | 2020-08-25 | 云途信息科技(杭州)有限公司 | Road quality detection method, device, storage medium and system |
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| CN113389115A (en) * | 2021-05-19 | 2021-09-14 | 哈尔滨工业大学（深圳） | Vehicle characteristic and road surface flatness detection method, device, equipment and storage medium |
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