CN109391660A - Data processing method, device and storage medium in car networking system - Google Patents
Data processing method, device and storage medium in car networking system Download PDFInfo
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- CN109391660A CN109391660A CN201710679046.4A CN201710679046A CN109391660A CN 109391660 A CN109391660 A CN 109391660A CN 201710679046 A CN201710679046 A CN 201710679046A CN 109391660 A CN109391660 A CN 109391660A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1408—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic by monitoring network traffic
- H04L63/1425—Traffic logging, e.g. anomaly detection
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Abstract
The invention discloses data processing method, device and storage mediums in a kind of car networking system.The described method includes: determining current traffic flow information according to the traffic flow data packet that current time obtains；Allow information according to the current traffic flow information and pre-stored present flow rate, determines the validity of the traffic flow data packet obtained.Method, apparatus and storage medium in the present invention, the traffic flow data packet obtained by current time, determine current traffic flow information；Allow information by the current traffic flow information and present flow rate, determine the validity of the traffic flow data packet obtained, thus in acquiring car networking sub-network during the telecommunication flow information of current road segment, data validity is provided for entire car networking to guarantee, system data is abnormal caused by avoiding because of malicious attack etc., and then avoids generating harm to personal safety.
Description
Technical field
The present invention relates to vehicle networking technical fields, more particularly to data processing method, device in a kind of car networking system
And storage medium.
Background technique
With the fast development of technology of Internet of things, this concept of car networking is gradually known, and car networking system is
The main direction of development as the following motor vehicle network.Car networking (IOV, Internet of Vehicles) system, which refers to, to be passed through
Vehicle-mounted terminal equipment is installed in vehicle instrument desk, is realized to vehicle all working situation and quiet, multidate information acquisition, storage simultaneously
It sends.Car networking system is divided into three parts: car-mounted terminal, cloud computing processing platform, Data Analysis Platform, according to different industries
The different functional requirements of vehicle are realized to vehicle effective monitoring management.
Data are the important components of car networking.Pass through sensing technology, network technology, computing technique, intellectual technology, control
Each information of vehicles is summarized calculating, forms the overall recognition to road traffic and vehicle individual by technology processed etc..Existing data peace
Full property verification method, is mainly based upon and establishes a kind of authentication mechanism, as data set provider authorization or distribution key.It is existing
Information Security verification method requires in advance to divide validated user, and distributes authentication information.
And in car networking system, huge data source number of users is its main feature.On the one hand, the subnet of each car networking
Data source vehicle randomness is extremely strong in network and quick variation, can not authenticate to each user and encryption key distribution；Another party
Face can authenticate the sample of big data quantity even if car networking system is mature enough, and for the tool of authorized user
Whether body behavior effectively can not but judge that security of system still cannot ensure.Therefore, existing in vehicle networking technical field
Information Security verification method urgently improve.
Summary of the invention
In order to overcome drawbacks described above, the technical problem to be solved in the present invention is to provide data processings in a kind of car networking system
Method, apparatus and storage medium, to solve defect existing for data source security verification in existing car networking system.
In order to solve the above technical problems, data processing method in one of present invention car networking system, comprising:
According to the traffic flow data packet that current time obtains, current traffic flow information is determined；
Allow information according to the current traffic flow information and pre-stored present flow rate, determines the traffic flow obtained
The validity of data packet.
In order to solve the above technical problems, data processing equipment in one of present invention car networking system, including memory
And processor；The memory is stored with data processing computer program；The processor executes the computer program, with reality
Existing following steps:
According to the traffic flow data packet that current time obtains, current traffic flow information is determined；
Allow information according to the current traffic flow information and pre-stored present flow rate, determines the traffic flow obtained
The validity of data packet.
In order to solve the above technical problems, one of present invention computer readable storage medium, is stored with car networking system
Middle data processing computer program；When the computer program is executed by least one processor, may be implemented as above any
The step of one the method.
The present invention has the beneficial effect that:
Method, apparatus and storage medium in the present invention, the traffic flow data packet obtained by current time determine current hand over
Through-current capacity information；Allow information by the current traffic flow information and present flow rate, determines the traffic flow data packet obtained
Validity, to mention in acquiring car networking sub-network during the telecommunication flow information of current road segment for entire car networking
Guarantee for data validity, system data is abnormal caused by avoiding because of malicious attack etc., and then generates harm to personal safety.
Detailed description of the invention
Fig. 1 is a kind of flow chart of data processing method in car networking system in the embodiment of the present invention；
Fig. 2 is car networking system frame diagram in the embodiment of the present invention；
Fig. 3 is three-dimensional modeling schematic diagram in the embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of data processing equipment in car networking system in the embodiment of the present invention.
Specific embodiment
In order to solve problems in the prior art, the present invention works in the trackside facility in car networking system, can join to vehicle
The traffic flow data that each target (such as vehicle) issues in net is analyzed, and malicious data injection attacks are prevented.The present invention passes through
Three-dimensional modeling is carried out to Vehicle Speed in the unit time in car networking sub-network and the two traffic flow datas of the magnitude of traffic flow,
And received real-time traffic stream information continuous on trackside facility is compared, is recombinated using existing model, realize existing traffic
The self study of discharge model.Meanwhile the present invention carries out availability deciding for the packet priority received, if it is determined that being illegal
Data then abandon it, and record the transmitting side marking (such as ID) of the data source, to the subsequent transmission of ID owning user
Data shielded.The present invention can replicate the attack that normal data packet is largely injected and generated to malicious user,
And malicious user can forge the attack of false data packet and be identified.The present invention is worked in data validity requirement
On higher car networking roadside device, such as trackside gateway, it can be ensured that road attribute provided by car networking is accurate.
Based on this, the present invention provides data processing method, device and storage mediums in a kind of car networking system, tie below
Attached drawing and embodiment are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, the present invention is not limited.
Embodiment one
As shown in Figure 1, the embodiment of the present invention provides data processing method in a kind of car networking system, which comprises
S101 determines current traffic flow information according to the traffic flow data packet that current time obtains；
S102 allows information according to the current traffic flow information and pre-stored present flow rate, determines acquisition
The validity of traffic flow data packet.
Method can be applied to the road side system in car networking system in the embodiment of the present invention, the friendship obtained by current time
Through-flow data packet, determines current traffic flow information；Allow information by the current traffic flow information and present flow rate, really
Surely the validity of the traffic flow data packet obtained, thus acquisition car networking sub-network in current road segment telecommunication flow information mistake
Cheng Zhong provides data validity for entire car networking and guarantees, avoids system data caused by attacking because of hackers abnormal, in turn
Harm is generated to personal safety.
Traffic flow data packet in the embodiment of the present invention can be referred to as data packet.
On the basis of the above embodiments, it is further proposed that the variant embodiment of above-described embodiment, needs to illustrate herein
It is, in order to make description briefly, the difference with above-described embodiment only to be described in each variant embodiment.
The prefixes such as " first " for differentiation parameter, " second " are used in the embodiment of the present invention only for being conducive to this
The explanation of invention itself does not have specific meaning.
Optionally, described that information is allowed according to the current traffic flow information and pre-stored present flow rate, it determines
The validity of the traffic flow data packet of acquisition may include:
For each traffic flow data packet of acquisition: according to the corresponding present rate information of the traffic flow data packet, really
Determine the corresponding current traffic flow information of the traffic flow data packet；
Allow information according to the corresponding current traffic flow information of the traffic flow data packet and the present flow rate, determines
The validity of the traffic flow data packet.
Optionally, described to be permitted according to the corresponding current traffic flow information of the traffic flow data packet and the present flow rate
Perhaps information after the validity for determining the traffic flow data packet, can also include:
When determining the traffic flow data packet is invalid packets, the traffic flow data packet is abandoned, and by the friendship
The corresponding transmitting side marking of through-flow data packet is added in preset abnormal user list；
When determining the traffic flow data packet is effective data packets, according to the corresponding current friendship of the traffic flow data packet
Through-current capacity information and the present flow rate allow information, and updating the present flow rate allows information.
For example, allowing information to ask the corresponding current traffic flow information of the traffic flow data packet and the present flow rate
With, be then averaging, obtained average value be updated flow allow information.
Optionally, described according to the corresponding present rate information of the traffic flow data packet, determine the traffic flow data
Corresponding current traffic flow information is wrapped, may include:
According to the flow speed model traffic flow data packet corresponding present rate information and pre-established, determine with
The corresponding current traffic flow of the traffic flow data packet；
The flow speed model is for indicating relationship between zone-to-zone travel flow and rate information.
Optionally, described to be permitted according to the corresponding current traffic flow information of the traffic flow data packet and the present flow rate
Perhaps information determines the validity of the traffic flow data packet, may include:
It is described that information is allowed according to the corresponding current traffic flow information of the traffic flow data packet and the present flow rate,
Determine the validity of the traffic flow data packet, comprising:
Determine that the corresponding current traffic flow information of the traffic flow data packet and the present flow rate allow the of information
One discrete value；
If first discrete value is less than preset first tolerance coefficient, the traffic flow data packet is valid data
Packet；
If first discrete value is invalid data not less than preset first tolerance coefficient, the traffic flow data packet
Packet.
The embodiment of the present invention calculates resulting dispersion degree by assessment, and then judges the validity of data packet.Likewise,
Any statistics is can be used into discrete use in this programme and theory of random processes is replaced；For example, the current friendship
Through-current capacity information is current flows magnitude；The present flow rate allows information to be present flow rate permissible value；Wherein, it states according to institute
Stating the corresponding current traffic flow information of traffic flow data packet and the present flow rate allows information, determines the traffic flow data
The validity of packet, comprising:
Determine the first poor of the corresponding current flows magnitude of the traffic flow data packet and the present flow rate permissible value
The absolute value of value；
If the absolute value of first difference is less than preset first tolerance coefficient, the traffic flow data packet is effective
Data packet；
If the absolute value of first difference is not less than preset first tolerance coefficient, the traffic flow data Bao Weiwu
Imitate data packet.
Optionally, described according to the corresponding present rate information of the traffic flow data packet, determine the traffic flow data
Before wrapping corresponding current traffic flow information, can also include:
According to the quantity of the traffic flow data packet of acquisition, the current traffic density of current road segment is calculated；
According to the current traffic density, the corresponding current traffic flow letter of all traffic flow data packets obtained is determined
Breath；
Allow letter according to the corresponding current traffic flow information of all traffic flow data packets and pre-stored present flow rate
Breath, primarily determines the validity of all traffic flow data packets.
Optionally, the quantity of the traffic flow data packet according to acquisition, calculate current road segment current traffic density it
Before, can also include:
Receive the traffic flow data packet that preset target is sent；
According to preset driving direction, retain the traffic flow data packet that target identical with the driving direction is sent；
By the corresponding transmitting side marking of each traffic flow data packet of reservation and preset abnormal user list one by one compared with；
When more identical, corresponding traffic flow data packet when abandoning identical；
Obtain the traffic flow data packet not abandoned.
Optionally, described according to the corresponding current traffic flow information of all traffic flow data packets and pre-stored current
Flow allows information, after the validity for primarily determining all traffic flow data packets, can also include:
Primarily determine it is described to have traffic flow data packet be invalid packets when, abandon all traffic flow data packets；
When primarily determining all traffic flow data packets is effective data packets, work as according to all traffic flow data packets are corresponding
Preceding traffic flow information and the present flow rate allow information, and updating the present flow rate allows information.
Optionally, described according to the current traffic density, determine that all traffic flow data packets obtained are corresponding current
Traffic flow information may include:
According to the current traffic density and the flux density model pre-established, determine that all traffic flow data packets are corresponding
Current traffic flow information；The flux density model is for indicating to close between zone-to-zone travel flow and zone-to-zone travel density
System.
Optionally, the current traffic flow information is current flows magnitude；The present flow rate allows information to be to work as
Preceding flow permissible value；
It is described to be permitted according to the corresponding current traffic flow information of all traffic flow data packets and pre-stored present flow rate
Perhaps information primarily determines the validity of all traffic flow data packets, may include:
Determine the second of the corresponding current flows magnitude of all traffic flow data packets and the present flow rate permissible value from
Dissipate value；
If second discrete value is less than preset second tolerance coefficient, all traffic flow data Bao Weiyou are primarily determined
Imitate data packet；
If second discrete value primarily determines that all traffic flow data packets are not less than preset second tolerance coefficient
Invalid packets.
Wherein, the second discrete value can be the corresponding current flows magnitude of all traffic flow data packets and the current stream
Measure the absolute value of the difference of permissible value.
The first tolerance coefficient and the second tolerance coefficient, may be the same or different in the embodiment of the present invention.
Embodiment two
The embodiment of the present invention is an alternative embodiment in embodiment one.Fig. 2 is to join using the vehicle of present invention method
Net system framework figure.
As shown in Fig. 2, system is by S1 vehicle-mounted data distribution module, S2 roadside device receiving module and the cloud S3 Data Integration
Module composition.Wherein, S1 includes that S11 vehicle-mounted data obtains module and S12 vehicle-mounted data sending module again；S2 includes S21 data
Receiving module, S22 data preprocessing module, S23 data validity determination module.
Wherein, S1 is installed on vehicle, the letter such as real time running speed, acceleration, temperature, oil consumption for acquiring vehicle
Breath；S2 is worked on the roadside devices such as road and bridge gateway, for receiving the letter of data transmitted by the vehicle in car networking subnet
Breath, after integration, analysis and structuring, generates the telecommunication flow information of the subnet, and be ultimately routed to the cloud S3 Data Integration
Module.Communication mode between S1, S2 include but is not limited to following short range transmission agreement Zigbee (ZigBee protocol), bluetooth,
RF (Radio Frequency, radio frequency), LoRa (a kind of overlength distance wireless transmission scheme based on spread spectrum) and NB-
IOT (Narrow Band Internet of Things, cellular narrowband Internet of Things) etc. moves air network.
Three-dimensional modeling is carried out using the magnitude of traffic flow, rate information and traffic density in the embodiment of the present invention, is closed between three
It is as follows:
Q=K*V (formula 1)
Wherein: Q is the magnitude of traffic flow (referred to as flow), indicates the vehicle fleet that the section passes through in per time instance, unit
For/h.K is traffic density (referred to as density), indicates vehicle fleet in a certain moment unit distance section, unit is/it is public
In.V is rate information, for example, section mean speed, unit Km/h.
1, V-K (speed density) model: meeting Greenshiled model, is linear relationship.V-K model is as follows:
Wherein, VfMaximum speed when for K=0；KjMaximum traffic density when for V=0.
2, V-Q (speed flowrate) model is parabolic relation, can be obtained by formula 2:
Therefore,
3.Q-K (flux density) model is as follows:
It is identical with the first tolerance coefficient and the second tolerance coefficient below, it is to illustrate side in the embodiment of the present invention for ε
Method.
Specifically, data processing method in a kind of car networking system in the embodiment of the present invention, comprising:
Step 201, mobile unit data prediction: the traffic flow data packet sent from mobile unit is received, and is carried out
It extracts and handles.The transmits information direction (1, -1) of vehicle is extracted first.Although roadside device can receive simultaneously
The information of vehicles of positive and negative two-way lane, but for data analysis, the data of the only same direction just have reference value.Cause
This need to abandon the data packet that direction is -1.Wherein 1 is preset driving direction.
Step 202, by the ID of data packet sender and abnormal user blacklist one by one compared with, if having it is identical, directly
It abandons；Otherwise data packet sender's current driving speed V is extractedi(Km/h), from can directly being parsed by data packet.
Step 203, default system is non-initial state in this example, and the current flow of storage one allows information in system
Z。
Step 204, according to the i moment, (the data packet number that unit s) roadside device receives, obtains the close of current section
Spend Ki, and then according to formula 5, calculate Q 'i。
Step 205, Q ' is calculatediWith the absolute value of the difference of Z:
Step 206, whenThen the preliminary judgement traffic flow data packet is authentic data；Malice does not occur for the period
User's attack, can further analyze the period received packet content；Meanwhile more new flow allows information Z, i.e.,
Z value is updated to Z and Q 'iAverage value, for next time analyze；
Step 207, conversely, working asWhen, it is believed that the period has malicious user in such a way that mass data packet invades
System attack is carried out, to guarantee system stability, the period all data packets are abandoned, Q is remained unchanged.Wherein, ε
It is the tolerance coefficient of systemic presupposition, can modifies.
It step 208, is that reliable data packet is further judged to preliminary judgement.Each data when according to moment i
The speed V of packeti, the flow value Q at current time can be calculated according to formula 4i；
Step 209, the Q is calculatediWith the absolute value of the difference of Z:
Step 210, ifThen think that the data of the data packet are effective, it includes rate information meet current when
The traffic flow valuve of section and current road segment；Z is updated simultaneously；
Step 211, ifIt is judged as invalid data, carries out injection attacks to prevent malicious user from reusing the packet,
The sender ID wrapped in vain is recorded, and abnormal user blacklist (can also be referred to as abnormal user list) is added in the ID,
It compares and analyzes for follow-up data packet；
Step 212, if being judged as trust data, according to the real work scene of roadside device, believe crucial in data packet
Breath is extracted and is integrated；For the car networking system of band cloud end data sharing functionality, send at the data packet to cloud data
Module is managed, other modules are read out and use for car networking after analysis.
Embodiment three
As shown in figure 4, the embodiment of the present invention provides data processing equipment in a kind of car networking system, described device includes depositing
Reservoir 40 and processor 42；The memory 40 is stored with data processing computer program；The processor 42 executes the meter
Calculation machine program, to perform the steps of
According to the traffic flow data packet that current time obtains, current traffic flow information is determined；
Allow information according to the current traffic flow information and pre-stored present flow rate, determines the traffic flow obtained
The validity of data packet.
The embodiment of the present invention can be applied to the road side system in car networking system, the traffic fluxion obtained by current time
According to packet, current traffic flow information is determined；Allow information by the current traffic flow information and present flow rate, determines and obtain
Traffic flow data packet validity, thus acquire car networking sub-network in current road segment telecommunication flow information during,
Data validity is provided for entire car networking to guarantee, avoids system data caused by attacking because of hackers abnormal, and then to people
Body generates safely harm.
Optionally, described that information is allowed according to the current traffic flow information and pre-stored present flow rate, it determines
The validity of the traffic flow data packet of acquisition, comprising:
For each traffic flow data packet of acquisition: according to the corresponding present rate information of the traffic flow data packet, really
Determine the corresponding current traffic flow information of the traffic flow data packet；
Allow information according to the corresponding current traffic flow information of the traffic flow data packet and the present flow rate, determines
The validity of the traffic flow data packet.
Optionally, described to be permitted according to the corresponding current traffic flow information of the traffic flow data packet and the present flow rate
Perhaps information, after the validity for determining the traffic flow data packet, further includes:
When determining the traffic flow data packet is invalid packets, the traffic flow data packet is abandoned, and by the friendship
The corresponding transmitting side marking of through-flow data packet is added in preset abnormal user list；
When determining the traffic flow data packet is effective data packets, according to the corresponding current friendship of the traffic flow data packet
Through-current capacity information and the present flow rate allow information, and updating the present flow rate allows information.
Optionally, described according to the corresponding present rate information of the traffic flow data packet, determine the traffic flow data
Wrap corresponding current traffic flow information, comprising:
According to the flow speed model traffic flow data packet corresponding present rate information and pre-established, determine with
The corresponding current traffic flow of the traffic flow data packet；The flow speed model is for indicating zone-to-zone travel flow and rate
Relationship between information.
Optionally, the current traffic flow information is current flows magnitude；The present flow rate allows information to be to work as
Preceding flow permissible value；
It is described that information is allowed according to the corresponding current traffic flow information of the traffic flow data packet and the present flow rate,
Determine the validity of the traffic flow data packet, comprising:
Determine the first of the corresponding current flows magnitude of the traffic flow data packet and the present flow rate permissible value from
Dissipate value；
If first discrete value is less than preset first tolerance coefficient, the traffic flow data packet is valid data
Packet；
If first discrete value is invalid data not less than preset first tolerance coefficient, the traffic flow data packet
Packet.
Optionally, described according to the corresponding present rate information of the traffic flow data packet, determine the traffic flow data
Before wrapping corresponding current traffic flow information, further includes:
According to the quantity of the traffic flow data packet of acquisition, the current traffic density of current road segment is calculated；
According to the current traffic density, the corresponding current traffic flow letter of all traffic flow data packets obtained is determined
Breath；
Allow letter according to the corresponding current traffic flow information of all traffic flow data packets and pre-stored present flow rate
Breath, primarily determines the validity of all traffic flow data packets.
Wherein, the quantity of the traffic flow data packet according to acquisition, before the current traffic density for calculating current road segment,
Further include:
Receive the traffic flow data packet that preset target is sent；
According to preset driving direction, retain the traffic flow data packet that target identical with the driving direction is sent；
By the corresponding transmitting side marking of each traffic flow data packet of reservation and preset abnormal user list one by one compared with；
When more identical, corresponding traffic flow data packet when abandoning identical；
Obtain the traffic flow data packet not abandoned.
Wherein, described according to the corresponding current traffic flow information of all traffic flow data packets and pre-stored current stream
Measuring allows information, after the validity for primarily determining all traffic flow data packets, further includes:
Primarily determine it is described to have traffic flow data packet be invalid packets when, abandon all traffic flow data packets；
When primarily determining all traffic flow data packets is effective data packets, work as according to all traffic flow data packets are corresponding
Preceding traffic flow information and the present flow rate allow information, and updating the present flow rate allows information.
Wherein, described according to the current traffic density, determine the corresponding current friendship of all traffic flow data packets obtained
Through-current capacity information, comprising:
According to the current traffic density and the flux density model pre-established, determine that all traffic flow data packets are corresponding
Current traffic flow information；The flux density model is for indicating to close between zone-to-zone travel flow and zone-to-zone travel density
System.
Wherein, the current traffic flow information is current flows magnitude；The present flow rate allows information to be current
Flow permissible value；
It is described to be permitted according to the corresponding current traffic flow information of all traffic flow data packets and pre-stored present flow rate
Perhaps information primarily determines the validity of all traffic flow data packets, comprising:
Determine the second of the corresponding current flows magnitude of all traffic flow data packets and the present flow rate permissible value from
Dissipate value；
If second discrete value is less than preset second tolerance coefficient, all traffic flow data Bao Weiyou are primarily determined
Imitate data packet；
If second discrete value primarily determines that all traffic flow data packets are not less than preset second tolerance coefficient
Invalid packets.
Example IV
The embodiment of the present invention provides a kind of computer readable storage medium, and the storage medium is stored in car networking system
Data processing computer program；When the computer program is executed by least one processor, may be implemented such as embodiment one
Any one of the method the step of.
Computer readable storage medium can be RAM memory, flash memory, ROM memory, EPROM in the embodiment of the present invention
Memory, eeprom memory, register, hard disk, mobile hard disk, CD-ROM or any other form known in the art
Storage medium.A kind of storage medium lotus root can be connected to processor, thus enable a processor to from the read information,
And information can be written to the storage medium；Or the storage medium can be the component part of processor.Processor and storage are situated between
Matter can be located in specific integrated circuit.
It should be noted that embodiment three and example IV refering to embodiment one and can be implemented in specific implementation
Example two, it may have the technical effect of embodiment one and embodiment two, therefore not to repeat here.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (13)
1. data processing method in a kind of car networking system, which is characterized in that the described method includes:
According to the traffic flow data packet that current time obtains, current traffic flow information is determined；
Allow information according to the current traffic flow information and pre-stored present flow rate, determines the traffic flow data obtained
The validity of packet.
2. the method as described in claim 1, which is characterized in that described according to the current traffic flow information and being stored in advance
Present flow rate allow information, determine obtain traffic flow data packet validity, comprising:
For each traffic flow data packet of acquisition: according to the corresponding present rate information of the traffic flow data packet, determining institute
State the corresponding current traffic flow information of traffic flow data packet；
Allow information according to the corresponding current traffic flow information of the traffic flow data packet and the present flow rate, determine described in
The validity of traffic flow data packet.
3. method according to claim 2, which is characterized in that described according to the corresponding Current traffic of the traffic flow data packet
Flow information and the present flow rate allow information, after the validity for determining the traffic flow data packet, further includes:
When determining the traffic flow data packet is invalid packets, the traffic flow data packet is abandoned, and by the traffic flow
The corresponding transmitting side marking of data packet is added in preset abnormal user list.
4. method according to claim 2, which is characterized in that described according to the corresponding present rate of the traffic flow data packet
Information determines the corresponding current traffic flow information of the traffic flow data packet, comprising:
According to the flow speed model traffic flow data packet corresponding present rate information and pre-established, it is determining with it is described
The corresponding current traffic flow of traffic flow data packet；The flow speed model is for indicating zone-to-zone travel flow and rate information
Between relationship.
5. method according to claim 2, which is characterized in that described according to the corresponding Current traffic of the traffic flow data packet
Flow information and the present flow rate allow information, determine the validity of the traffic flow data packet, comprising:
Determine the corresponding current traffic flow information of the traffic flow data packet and the present flow rate allow the first of information from
Dissipate value；
If first discrete value is less than preset first tolerance coefficient, the traffic flow data packet is effective data packets；
If first discrete value is invalid packets not less than preset first tolerance coefficient, the traffic flow data packet.
6. the method as described in any one of claim 2-4, which is characterized in that described according to the traffic flow data packet pair
The present rate information answered, before determining the corresponding current traffic flow information of the traffic flow data packet, further includes:
According to the quantity of the traffic flow data packet of acquisition, the current traffic density of current road segment is calculated；
According to the current traffic density, the corresponding current traffic flow information of all traffic flow data packets obtained is determined；
Allow information according to the corresponding current traffic flow information of all traffic flow data packets and pre-stored present flow rate, just
Step determines the validity of all traffic flow data packets.
7. method as claimed in claim 6, which is characterized in that the quantity of the traffic flow data packet according to acquisition calculates
Before the current traffic density of current road segment, further includes:
Receive the traffic flow data packet that preset target is sent；
According to preset driving direction, retain the traffic flow data packet that target identical with the driving direction is sent；
By the corresponding transmitting side marking of each traffic flow data packet of reservation and preset abnormal user list one by one compared with；
When more identical, corresponding traffic flow data packet when abandoning identical；
Obtain the traffic flow data packet not abandoned.
8. method as claimed in claim 6, which is characterized in that described according to the corresponding Current traffic of all traffic flow data packets
Flow information and pre-stored present flow rate allow information, after the validity for primarily determining all traffic flow data packets, also
Include:
Primarily determine it is described to have traffic flow data packet be invalid packets when, abandon all traffic flow data packets.
9. method according to claim 8, which is characterized in that the method also includes:
When determining the traffic flow data packet is effective data packets, according to the corresponding current flows of the traffic flow data packet
Measuring information and the present flow rate allows information, and updating the present flow rate allows information；
When primarily determining all traffic flow data packets is effective data packets, according to the corresponding current friendship of all traffic flow data packets
Through-current capacity information and the present flow rate allow information, and updating the present flow rate allows information.
10. method as claimed in claim 6, which is characterized in that it is described according to the current traffic density, determine the institute obtained
There is the corresponding current traffic flow information of traffic flow data packet, comprising:
According to the current traffic density and the flux density model pre-established, determines that all traffic flow data packets are corresponding and work as
Preceding traffic flow information；The flux density model is for indicating relationship between zone-to-zone travel flow and zone-to-zone travel density.
11. method as claimed in claim 6, which is characterized in that the current traffic flow information is current flows magnitude；
The present flow rate allows information to be present flow rate permissible value；
It is described that letter is allowed according to the corresponding current traffic flow information of all traffic flow data packets and pre-stored present flow rate
Breath, primarily determines the validity of all traffic flow data packets, comprising:
Determine the second discrete value of all traffic flow data packets corresponding current flows magnitude and the present flow rate permissible value；
If second discrete value is less than preset second tolerance coefficient, primarily determine that all traffic flow data packets are significant figure
According to packet；
If second discrete value primarily determines that all traffic flow data packets are invalid not less than preset second tolerance coefficient
Data packet.
12. data processing equipment in a kind of car networking system, which is characterized in that described device includes memory and processor；Institute
It states memory and is stored with data processing computer program；The processor executes the computer program, to realize as right is wanted
The step of seeking any one of 1-10 the method.
13. a kind of computer readable storage medium, which is characterized in that the storage medium is stored in car networking system at data
Manage computer program；When the computer program is executed by least one processor, to realize as appointed in claim 1-10
The step of the method for anticipating.
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