CN104184815B - A kind of topological network - Google Patents
A kind of topological network Download PDFInfo
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- CN104184815B CN104184815B CN201410430534.8A CN201410430534A CN104184815B CN 104184815 B CN104184815 B CN 104184815B CN 201410430534 A CN201410430534 A CN 201410430534A CN 104184815 B CN104184815 B CN 104184815B
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Abstract
The present invention proposes a kind of topological network, belongs to network topologies field.The topological network includes at least one subnet, and each subnet includes a sub- master node.Each subnet includes at least one domain, and each domain includes a domain host node.It is connected by subnet host node between each subnet, using based on Flex Ray bus communications.Each domain is communicated by its domain host node with the subnet host node of subnet.Present invention is particularly suitable on vehicle, avoid the heavy signal of gateway to route burden；Use actively star-like connection type so that subnet host node actively intelligently can detect network transmission situation, and the communication between each domain of the same subnet can not be transmitted by backbone network to ensure that the real-time of communication；Twin-channel transmission mode makes backbone network that can still ensure that information is transmitted in the case where any network breaks down, to realize failure operability.
Description
Technical field
The invention belongs to network topologies fields, are related to a kind of topological network.
Background technology
Electric framework based on domain (domain) is the development trend in automotive field next stage.Domain and domain
(domain-to-domain) communication between can be realized by gateway (gateway), but can increase gateway in this way can
By property requirement, and gateway is made to be become more complicated to the overall wire sheaves in each domain.Another solution is to pass through backbone
Net (backbone network) is realized, the information in a domain is passed through in Backbone Transport to another domain.
In the prior art, backbone network has a technology using the high-speed CAN bus based on 500kbps traffic rates, but by
When being communicated between backbone network is associated in each subnet, the traffic is big, load factor is high, and the communication bandwidth of CAN bus cannot meet day
The communication requirement that benefit increases, the especially demand of the real-times such as safety and dynamic Control, reliability etc.
Invention content
The higher network topology structure of relatively low and reliability the purpose of the present invention is to provide a kind of cost.
In order to achieve the above object, solution of the invention is：
A kind of topological network, including at least one subnet, each subnet include a sub- master node；The subnet
Including at least one domain, each domain includes a domain host node；Pass through the subnet host node between each subnet
Connection, using based on Flex Ray bus communications；The subnet host node that each domain passes through its domain host node and place subnet
Communication.
It is connected by binary channels between the subnet host node.
The domain host node and the subnet host node of the subnet where it is located connect, and belong between the domain of the same subnet and lead to
Cross the subnet host node communication of the respective domain host node and place subnet.
Pass through Flex Ray bus communications between the domain host node and the major network host node.
Include at least a module in the domain, each module includes a domain from node；The same domain
Connected from node by the respective domain between each of interior module, the domain from node also with the domain master in domain where it
Node connects.
It is communicated by CAN bus between module in the same domain.
The function of the domain host node realizes that the degree dependent on place intra-area communication information is more than first threshold；First threshold
Value is setting value.
The function of the subnet host node realizes that the degree dependent on the communication information in the subnet of place is more than second threshold；Institute
It is setting value to state second threshold.
The topological network includes display connection subnet, power chassis control subnet and vehicle body amusement control subnet.
The display connection subnet includes presentation of information domain and vehicle connected domain；The power chassis control subnet includes bottom
Disk control domain and dynamic Control domain；The vehicle body amusement control subnet includes Body Control domain and Infotainment domain.
By adopting the above scheme, the beneficial effects of the invention are as follows：Present invention employs cascade backbone-network-mappings, make
Vehicle no longer uses the communication mode of central gateway, and burden is route so as to avoid the heavy signal of gateway；Simultaneously according to each
The position reasonable Arrangement overall wire sheaves in a domain；Use actively star-like connection type so that subnet host node can actively and
The detection network transmission situation of intelligence, and being communicated using outstanding fault-tolerance approach, and each domain of the same subnet it
Between communication can not by backbone network transmit to ensure that the real-time of communication；Twin-channel transmission mode makes backbone
Net can still ensure that information is transmitted in the case where any network breaks down, to realize failure operability.
Description of the drawings
Fig. 1 is the network architecture of cascade bi-pass road active star-like backbone network of the embodiment of the present invention based on FlexRay buses
Figure.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings.
The present invention proposes a kind of topological network, which is particularly suitable on vehicle, and specially one kind is based on
Actively star-like backbone network, Fig. 1 are its network architecture diagram in the cascade bi-pass road of FlexRay buses.The backbone network uses cascade network
Vehicle network is divided into multiple subnets (sub-network), contains several domains inside each subnet by topology；Each subnet packet
A sub- master node is included, and is connected by subnet host node between each subnet；Each domain includes a domain host node, often
It is connected by domain host node between a domain, and each domain host node is connect with the subnet host node of subnet where the domain.Subnet
The domain host node in host node to each domain uses actively star-like connection and realization method, the basic training of active star-like connection mode
The data that can be received for forwarding flow to all other network branches.It is logical between subnet host node and subnet host node simultaneously
Letter is carried out using the Double channel scheme based on Flex Ray buses.It is communicated by the CAN bus of low cost between domain node.
In the present embodiment, the cascade bi-pass road star-like backbone network of active that should be based on FlexRay buses includes several functions
Subnet is controlled, the power chassis as shown in Fig. 1 dashed rectangles controls subnet, vehicle body amusement control subnet, display connection control
Subnet；Each subnet can be further subdivided into function control domain, chassis control domain, power as shown in dotted ellipse frame in Fig. 1
Control domain, Body Control domain, Infotainment domain, presentation of information domain, vehicle connected domain.Further comprise in each function control domain
At least one module, each module include domain from node.If presentation of information domain includes new line display module；Vehicle is connected to
Domain includes OBD interface modules；Chassis control domain includes electronic stability control module, steering wheel angle sensor module, electronic helps
Power steering module, four-wheel drive module, rear radar camera module, preceding radar camera module etc.；Dynamic Control domain includes hair
Motivation control module, transmission control module, electronic gear shifter module, air bag module etc.；Body Control domain includes a key
Starting module, airconditioning control module, tire pressure monitoring module, vehicle window control module, power management module etc.；Infotainment domain includes
Television module, audio-frequency module, 3G communication modules etc..All controller nodes in the network are divided into three classes, and are actively respectively
Star-like node (i.e. subnet host node), domain host node, domain is from node.Domain is all connected with the domain host node in the domain from node, to
Slave node in the same domain is connected by the host node in the domain and communication.
It is communicated between the domain node being closely connected with functionality more frequently, is divided into a specific domain, example
Such as chassis control domain, dynamic Control domain, Body Control domain, Infotainment domain, presentation of information domain, vehicle connected domain.Called function
Property be closely connected refer to domain host node function realize depend on it where the communication information inside functional domain, only
Small part is real dependent on the communication information in other domains or the communication information independent of other domains, the i.e. function of domain host node
The degree of the communication information where now depending on it in functional domain is more than certain threshold value, which is setting value.For example, power control
Engine control module, gearbox controller module in domain processed, function is closely connected between electronic gear shifter module, and electronics changes
The gear information of lug-latch inputs to gearbox controller module and realizes that shift control function, engine control module output are started
The signals such as machine rotating speed, lifting moment of torsion control, warm up cycle input to speed changer and realize shift control function；Presentation of information domain is only real
Existing gear display function, and do not have then with other domains such as steering wheel angle sensor, electric powered steering control module, airconditioning control modules
There is communication information interaction.
Domain host node not only manages the functions such as the communication behavior of all nodes in the domain, such as network management, schema management,
And the interface that still domain is communicated with other domains, external equipment, such as be exactly to pass through domain to the diagnosis of other domain nodes
What host node carried out.
Equally, for there is the domains of tight contact to be divided into a function subnet, such as chassis control domain and power control
Domain processed has close contact, such as electronic stability control module in the car, other than relying on steering wheel angle sensor, also
Be closely connected engine control module, and when a domain cannot accommodate all domain nodes, then it can be divided into moving
A sub- master node can be arranged in power chassis control subnet, each subnet, which is the active star of backbone network
Node (activestar).
Connected by twin-channel main line between domain host node and star-like host node, between star-like host node and star-like host node
It connects, under normal circumstances in addition star-like host node enables only by a primary transmission in the case that the main line breaks down
One main line, to realize failure operability.
The present invention uses the FlexRay bus backbone networks for combining that binary channels cascades, active is star-like, in addition inside functional domain
Use the CAN bus network of low cost.The cascade redundant channel that introduces of binary channels increases fault-tolerant grade；It is actively star-like
Data flow in one functional domain can be not only transmitted to all other functional domain by introducing, and it is total to increase FlexRay
Line harness length；The introducing of FlexRay (being 20 times of CAN bus) bus backbone network with 10Mbps traffic rates is met
The demand of the transmission of the big data quantity of real-time, reliability；Domain node in individual feature domain can be carried out directly by CAN bus
Communication can meet local communication demand, it is not necessary to use FlexRay network communications.
Topological network of the present invention uses cascade backbone-network-mapping, and vehicle is made no longer to use the communication party of central gateway
Formula route burden so as to avoid the heavy signal of gateway；Simultaneously according to the position reasonable Arrangement overall wire sheaves in each domain；It adopts
With actively star-like connection type so that subnet host node can the actively detection network transmission situation of intelligence, and use
Outstanding fault-tolerance approach is communicated, and the communication between each domain of the same subnet can not be transmitted by backbone network
To ensure that the real-time of communication；Twin-channel transmission mode makes backbone network the case where any network breaks down
Under can still ensure information transmit, to realize failure operability.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (4)
1. a kind of topological network, it is characterised in that：Including at least one subnet, each subnet includes sub- host's section
Point；The subnet includes at least one domain, and each domain includes a domain host node；
It is connected by the subnet host node between each subnet, using based on Flex Ray bus communications；It is described each
Domain is communicated by its domain host node with the subnet host node of place subnet；
The domain host node and the subnet host node of the subnet where it is located connect, and belong between the domain of the same subnet by each
It is communicated from the subnet host node of the domain host node and place subnet；
Include at least a module in the domain, each module includes a domain from node；The same domain it is every
It is connected from node by the respective domain between a module, the domain also connects with the domain host node in domain where it from node
It connects；
The function of the domain host node realizes that the degree dependent on place intra-area communication information is more than first threshold；First threshold is
Setting value；The function of the subnet host node realizes that the degree dependent on the communication information in the subnet of place is more than second threshold；Institute
It is setting value to state second threshold；
The topological network is vehicle-mounted topological network, including display connection subnet, power chassis control subnet and vehicle body amusement control
System net；The display connection subnet includes presentation of information domain and vehicle connected domain；The power chassis control subnet includes bottom
Disk control domain and dynamic Control domain；The vehicle body amusement control subnet includes Body Control domain and Infotainment domain；
Described information display field includes new line display module；
The vehicle connected domain includes OBD interface modules；
The chassis control domain include electronic stability control module, steering wheel angle sensor module, electric power steering module,
Four-wheel drive module, rear radar camera module, preceding radar camera module；
The dynamic Control domain includes engine control module, transmission control module, electronic gear shifter module, air bag mould
Block；
The Body Control domain includes one-key start module, airconditioning control module, tire pressure monitoring module, vehicle window control module, electricity
Source control module；
It includes television module, audio-frequency module, 3G communication modules that described information, which entertains domain,.
2. topological network according to claim 1, it is characterised in that：Connected by binary channels between the subnet host node
It connects.
3. topological network according to claim 1, it is characterised in that：Between the domain host node and the subnet host node
Pass through Flex Ray bus communications.
4. topological network according to claim 1, it is characterised in that：Pass through CAN between module in the same domain
Bus communication.
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| CN201410430534.8A CN104184815B (en) | 2014-08-28 | 2014-08-28 | A kind of topological network |
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| DE102017203185B4 (en) | 2017-02-28 | 2018-09-06 | Audi Ag | Motor vehicle with a divided into several separate domains data network and method for operating the data network |
| CN107197007B (en) * | 2017-05-07 | 2020-05-08 | 北京航空航天大学 | Communication method of electric vehicle domain-division mesh communication network architecture based on vehicle-mounted Ethernet |
| CN107678310A (en) * | 2017-09-20 | 2018-02-09 | 北京长城华冠汽车科技股份有限公司 | vehicle electrical architecture and automobile |
| CN109412695B (en) * | 2018-12-28 | 2022-06-10 | 中国船舶重工集团公司第七一九研究所 | Optical fiber CAN2.0B bus routing system based on star topology structure |
| CN110562171A (en) * | 2019-10-11 | 2019-12-13 | 北京新能源汽车技术创新中心有限公司 | Automobile electric control system and automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101904137A (en) * | 2007-12-20 | 2010-12-01 | 罗伯特.博世有限公司 | Method for transmitting data in a cycle-based communications system |
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| CN100495382C (en) * | 2004-11-11 | 2009-06-03 | 国际商业机器公司 | Concurrent refreshing of processing units by means of network restructuring |
| CN103685560B (en) * | 2013-12-30 | 2017-08-25 | 长城汽车股份有限公司 | A kind of network structure of automobile electronic system |
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| CN101904137A (en) * | 2007-12-20 | 2010-12-01 | 罗伯特.博世有限公司 | Method for transmitting data in a cycle-based communications system |
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