CN209248286U - Topological structure based on controller LAN and the vehicle with the topological structure - Google Patents
Topological structure based on controller LAN and the vehicle with the topological structure Download PDFInfo
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- CN209248286U CN209248286U CN201822169998.4U CN201822169998U CN209248286U CN 209248286 U CN209248286 U CN 209248286U CN 201822169998 U CN201822169998 U CN 201822169998U CN 209248286 U CN209248286 U CN 209248286U
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Abstract
The utility model provides a kind of topological structure based on controller LAN, it includes gateway, combination instrument and multiple key network segment structures, multiple key network segment structures are connect with gateway respectively, combination instrument is connect with multiple key network segment structures respectively, each key network segment structure includes bus and several network segment nodes, includes at least two key network segment structures of the first network segment structure and the second network segment structure in the topological structure；Combination instrument is able to carry out the first network segment structure and the interstructural data interaction of the second network segment.The utility model also provides a kind of vehicle with the topological structure.Compared with the prior art the utility model has the beneficial effects that: the topological structure ensures that bus data reliably and securely can be transmitted and be interacted between key network segment.The topological structure can either meet the communication need of big data quantity, and can ensure that the real-time that combination instrument information is shown, moreover it is possible to meet the reliability requirement that bus data is transmitted between key network segment, exchanged.
Description
Technical field
The utility model relates to technical field of vehicle control, and in particular to one kind includes multiple controller LANs (CAN)
The topological structure of network segment, in addition the utility model further relates to a kind of vehicle with the topological structure.
Background technique
CAN is the abbreviation of Controller Area Network, and Chinese is controller LAN, is German electrical
Quotient Bosch is the data exchange solved between each electronic control unit and a kind of communication and control technology developed, with one
As communication bus compare, the data communication of CAN bus has reliability outstanding, real-time and flexibility.Since it is good
Performance and unique design, CAN bus be increasingly valued by people, especially on automotive field application it is the widest
General, almost all of automobile factory commercial city applies CAN bus to realize automotive interior control system and each detection and execution
Inter-agency data communication.
Under the premise of taking into account vehicle functions and manufacturing cost, the simple vehicle of general utility functions can use single network segment
Controller LAN realizes interconnecting for controller, but the controller LAN structure of single network segment or single CAN
Bus structures are but not suitable for applying on the vehicle of the functions such as middle and high end heavy truck complexity.When the controller LAN knot of single network segment
Structure or single CAN bus structure are applied when on the vehicle of the functions such as middle and high end heavy truck complexity, then will appear under communication efficiency
The phenomenon that drop, while the risk for also resulting in failure increases.
So more based on middle and high end heavy truck function, controller is more, the big feature of vehicle communication data amount, in middle and high end weight
Generally using the network topology structure of two or more CAN network segment on card, the topological structure is usually used to be integrated in other controllers
Gateway or independent gateway controller each network segment bus signals are routed.But this topological structure is not perfect ten yet
Beauty, there is also defect, topological structure disadvantage the most fatal is the reliability degree of dependence height to gateway, in gateway fails
After will cause vehicle and can not travel, if gateway failure can greatly affect traffic safety to vehicle under steam.
In view of the above drawbacks, the utility model creator obtains originally practical new finally by prolonged research and practice
Type.
Summary of the invention
To solve above-mentioned technological deficiency, the technical solution adopted in the utility model is that the utility model provides a kind of base
In the topological structure of controller LAN, which is characterized in that it includes gateway, combination instrument and multiple key network segment structures, more
A key network segment structure is connect with the gateway respectively, and the combination instrument connects with multiple key network segment structures respectively
It connects, each key network segment structure includes bus and several network segment nodes, in the topological structure based on controller LAN extremely
It less include two key network segment structures of the first network segment structure and the second network segment structure；The combination instrument is able to carry out described first
Network segment structure and the interstructural data interaction of the second network segment.
Preferably, the combination instrument is for detecting the gateway working condition；Described in being detected when the combination instrument
After gateway fails, the combination instrument is able to carry out the interstructural data interaction of the key network segment and/or triggering limping mode.
Preferably, the first network segment structure includes the first CAN bus and is arranged in several in first CAN bus
First network segment node, several first network segment nodes with the first network segment equipment for connecting, the first CAN bus difference
It is connect with the gateway and the combination instrument.
Preferably, the first network segment structure is vehicle body domain CAN network segment structure, the first network segment equipment includes vehicle body control
Device, Car's door controlling device and keyless entry and one-key start system processed, the car body controller, the Car's door controlling device and described
Keyless entry and one-key start system are connect by first CAN bus with the gateway and the combination instrument.
Preferably, the second network segment structure includes the second CAN bus and is arranged in several in second CAN bus
Second network segment node, several second network segment nodes with the second network segment equipment for connecting, the 2nd CAN bus difference
It is connect with the gateway and the combination instrument.
Preferably, the second network segment structure is power domain CAN network segment structure, the second network segment equipment includes retarder
Controller, electric brake system, gearbox control and control unit of engine, the buffer controller, the electronics system
Dynamic system, the gearbox control and the control unit of engine by the 2nd CAN bus and the gateway and
The combination instrument connection.
Preferably, the topological structure based on controller LAN further includes that one or more is connected with the gateway
Auxiliary network segment structure.
Preferably, the auxiliary network segment structure is third network segment structure, the third network segment structure includes the 3rd CAN total
Line and several third network segment nodes being arranged in third CAN bus, several third network segment nodes are used for and third network segment
Equipment connection, the third CAN bus are connect with the gateway.
Preferably, the third network segment structure is information CAN network segment structure, the third network segment equipment includes multimedia control
Device, Tachographs and parking assisting system processed, the multimedia controller, the Tachographs and the auxiliary system that parks
System is connect by the third CAN bus with the gateway.
A kind of vehicle, including a kind of topological structure based on controller LAN described above.
Compared with the prior art the utility model has the beneficial effects that:
The utility model proposes one kind can ensure that bus data key network segment transmit with when interacting with high security and
The CAN network topological structure of high reliability.The network topology structure can either meet middle and high end whole vehicle communication need, and energy
Ensure the real-time that combination instrument information is shown, moreover it is possible to meet that bus data transmits between key network segment, the reliability that exchanges is wanted
It asks, to improve the safety and reliability of vehicle operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the topological structure in the utility model embodiment 1 based on controller LAN；
Fig. 2 is the structural schematic diagram of the topological structure in the utility model embodiment 2 based on controller LAN；
Fig. 3 is the first network segment structure and the signal of the second network segment structure under normal circumstances in the utility model embodiment 2
Interaction schematic diagram；
Fig. 4 be in the utility model embodiment 2 first network segment structure and the second network segment structure in gateway fails
Signal interaction schematic diagram；
Fig. 5 is the flow chart that combination instrument starts limping mode (Limp home mode).
Appended drawing reference:
Gateway 1, the first network segment structure 2, combination instrument 3, the second network segment structure 5, third network segment structure 6, the first network segment are set
It is standby 20, car body controller 21, Car's door controlling device 22, keyless entry and one-key start system 23, the second network segment equipment 50, slow
Device controller 51, electric brake system 52, gearbox control 53, control unit of engine 54, third network segment equipment 60, more matchmakers
Body controller 61, Tachographs 62 and parking assisting system 63.
Specific embodiment
Below in conjunction with attached drawing, the above and other technical features and advantages of the present invention are described in more detail.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, it is merely for convenience of description the utility model, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, unless otherwise
Clear specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection is also possible to be electrically connected or can communicate each other；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, the connection inside two elements or the interaction relationship of two elements be can be, unless otherwise restricted clearly.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Embodiment 1
Fig. 1 is the structural schematic diagram of the topological structure in the utility model embodiment 1 based on controller LAN.Such as Fig. 1
Shown, the utility model embodiment 1 provides a kind of topological structure based on controller LAN comprising gateway 1, combination instrument
3 and multiple key network segment structures, multiple key network segment structures connect respectively with gateway 1.Combination instrument 3 respectively with multiple crucial nets
Segment structure connection.5 two key network segments of the first network segment structure 2 and the second network segment structure are included at least in multiple key network segment structures
Structure.I.e. gateway 1 and combination instrument 3 are connect with the first network segment structure 2 and the second network segment structure 5 respectively.
First network segment structure 2 includes the first CAN bus and several first network segment nodes being arranged in the first CAN bus,
Preferably, several first network segment nodes with the first network segment equipment 20 for connecting.First CAN bus respectively with gateway 1 and combine
Instrument 3 connects.First CAN bus be transmission medium, the communication for being used to complete between the first network segment equipment 20 and gateway 1 and
Interaction.
Second network segment structure 5 includes the second CAN bus and several second network segment nodes being arranged in the second CAN bus,
Preferably, several second network segment nodes with the second network segment equipment 50 for connecting.Second CAN bus respectively with gateway 1 and combine
Instrument 3 connects.Second CAN bus be transmission medium, the communication for being used to complete between the second network segment equipment 50 and gateway 1 and
Interaction.
Preferably, should topological structure based on controller LAN further include it is one or more be connected with gateway 1 it is auxiliary
Network segment structure is helped, in the present embodiment, auxiliary network segment number of structures is one, and auxiliary network segment structure is third network segment structure 6.
Under normal circumstances, the signal between the first network segment structure 2 and the second network segment structure 5 is interacted by gateway 1, group
It closes instrument 3 and directly obtains desired signal from the first network segment structure 2 and the second network segment structure 5.Gateway 1 under normal circumstances every
Certain time can send network management message NW to network and forward other CAN messages.
After 1 failure of gateway is offline, combination instrument 3 does not receive the network management message NW of the sending of gateway 1 or by net
Close the message of 1 forwarding, combination instrument 3 will start limping mode (Limp home mode), according to preset message routing and
Signal recombinates the data interaction that list carries out the first network segment structure 2 and the second network segment structure 5, guarantees the basic function of vehicle, together
When vehicle enter limping mode (Limp home mode).Specifically, the network that continuously monitoring standalone gateway issues of combination instrument 3
Period that message NW or gateway 1 forward most fast several CAN messages are managed, if continuous 10 message periods do not receive yet
Preset monitoring message, combination instrument 3 start vehicle Limp home mode automatically, realize the first network segment structure 2 and the second network segment
The signal interaction of the data interaction of structure 5 monitors again after vehicle stall is restarted.
Limping mode (Limp home mode) is a kind of emergency vehicle mode, is referred to when electric-control system goes wrong,
Limping mode can be triggered, control logic can be judged and be controlled according to corresponding condition, so that the load that must be controlled is pressed
According to set logic operation.Fundamental functional modules are still able to complete basic function at this time, so that automobile is remained to lower
It is required that continuing to travel.
A kind of beneficial effect for topological structure based on controller LAN that the utility model embodiment 1 provides is:
Combination instrument 3 can be directly acquired from the first network segment structure 2 and the second network segment structure 5 needs key message to be shown, and gateway 1
Then without forwarding these key messages, can reduce in this way the total inorganic nitrogen of the first network segment structure 2 or the second network segment structure 5 with
And the workload of gateway 1, improve the real-time that meter information is shown.
A kind of vehicle including the above-mentioned topological structure based on controller LAN is also provided in the utility model embodiment 1
, the vehicle component in addition to the above-mentioned topological structure based on controller LAN belongs to prior art scope, herein not
It repeats.
Topological structure and vehicle provided by the utility model based on controller LAN have compared with prior art with
Lower advantage:
1, the real-time that 3 information of combination instrument is shown can be improved；
2, it can maximumlly guarantee basic function of the vehicle after primary gateway failures；
3, the safety and reliability of the operation of vehicle are improved.
Embodiment 2
This embodiment differs from embodiment 1 in that:
Fig. 2 is the structural schematic diagram of the topological structure in the utility model embodiment 2 based on controller LAN.Such as Fig. 2
It is shown, in a kind of topological structure based on controller LAN that the utility model embodiment 2 provides, the first network segment structure 2
Including the first CAN bus and several first network segment nodes being arranged in the first CAN bus, it is preferable that several first network segment sections
Point with the first network segment equipment 20 for connecting.First CAN bus is connect with gateway 1 and combination instrument 3 respectively.First CAN bus
For transmission medium, it is used to complete communication and interaction between the first network segment equipment 20 and gateway 1.First network segment structure 2 can be with
It is vehicle body domain CAN network segment structure.
First network segment equipment 20 include english abbreviation be BCM car body controller 21, english abbreviation be DCM Car's door controlling
The node devices such as keyless entry and one-key start system 23 that device 22 and english abbreviation are PEPS.Car body controller 21, car door
Controller 22 and keyless entry and one-key start system 23 are connect by the first CAN bus with gateway 1 and combination instrument 3.
In other words, include in vehicle body domain CAN network segment structure for control vehicle exterior lighting and signal device, car door and
The CAN network node that information is shown.
Second network segment structure 5 includes the second CAN bus and several second network segment nodes being arranged in the second CAN bus,
Preferably, several second network segment nodes with the second network segment equipment 50 for connecting.Second CAN bus respectively with gateway 1 and combine
Instrument 3 connects.Second CAN bus be transmission medium, the communication for being used to complete between the second network segment equipment 50 and gateway 1 and
Interaction.Second network segment structure 5 can be power domain CAN network segment structure.
Second network segment equipment 50 includes buffer controller 51, the electronics system that english abbreviation is EBS that english abbreviation is RCU
The nodes such as the control unit of engine 54 that the gearbox control 53 and english abbreviation that dynamic system 52, english abbreviation are TCU are ECM
Equipment.The nodes such as buffer controller 51, electric brake system 52, gearbox control 53 and control unit of engine 54 are set
It is standby to be connect by the second CAN bus with gateway 1 and combination instrument 3.
Alternatively, including for controlling engine related controller, braking system relevant control in the CAN network segment structure of power domain
The CAN network node relevant to vehicle traveling such as device, gearbox control.
Preferably, should topological structure based on controller LAN further include it is one or more be connected with gateway 1 it is auxiliary
Network segment structure is helped, in the present embodiment, auxiliary network segment number of structures is one, and auxiliary network segment structure is third network segment structure 6.The
Three network segment structures 6 can be information CAN network segment.
Third network segment structure 6 includes third CAN bus and several third network segment nodes being arranged in third CAN bus,
Preferably, several third network segment nodes with third network segment equipment 60 for connecting.Third CAN bus is connect with gateway 1.Third
CAN bus is transmission medium, is used to complete communication and interaction between third network segment equipment 60 and gateway 1.
Third network segment equipment 60 include english abbreviation be MMI multimedia controller 61, english abbreviation be TCO traveling note
Instrument 62 and english abbreviation are recorded as the equal node devices of parking assisting system 63 of PAS.
It is total that the node devices such as multimedia controller 61, Tachographs 62 and parking assisting system 63 pass through the 3rd CAN
Line is connect with gateway 1.
Fig. 3 is the first network segment structure and the signal of the second network segment structure under normal circumstances in the utility model embodiment 2
Interaction schematic diagram.As shown in figure 3, under normal circumstances, each node device between the first network segment structure 2 and the second network segment structure 5
Signal interacted by gateway 1, combination instrument 3 is directly from each node of the first network segment structure 2 and the second network segment structure 5
Desired signal is obtained in equipment.Gateway 1 under normal circumstances at regular intervals can to network send network management message NW and
Forward other CAN messages.
Fig. 4 be in the utility model embodiment 2 first network segment structure and the second network segment structure in gateway fails
Signal interaction schematic diagram.As shown in figure 4, combination instrument 3 does not receive the network of the sending of gateway 1 after 1 failure of gateway is offline
Management message NW or the message forwarded by gateway 1, combination instrument 3 will start limping mode (Limp home mode), according to
Preset message routing and signal recombination list carry out the data interaction of the first network segment structure 2 and the second network segment structure 5,
Guarantee the basic function of vehicle, while vehicle enters limping mode (Limp home mode).
Combination instrument 3 can be directly acquired from power domain CAN network segment structure and vehicle body domain CAN network segment structure need to be to be shown
Information, and gateway 1 is then without forwarding these information can reduce the total of power domain CAN network segment or vehicle body domain CAN network segment in this way
The workload of linear load rate and gateway improves the real-time that meter information is shown；Combination instrument continuously monitors standalone gateway hair
The period of network management message NW or gateway forwards out most fast several CAN messages, if continuous 10 message periods are still
Preset monitoring message is not received, and combination instrument starts vehicle Limp home mode automatically, realizes the letter in vehicle body domain and power domain
Number interaction, monitors again after vehicle stall is restarted.
Fig. 5 is the flow chart that combination instrument starts limping mode (Limp home mode).As shown in figure 5, combination instrument 3
Execute following steps:
Step S1, combination instrument 3 monitors the NM message of gateway 1 or whether the period message of routing is lost, and such as loses and executes
Step S2；Otherwise, combination instrument 3 works normally, and combination instrument signal routing function does not activate, and combination instrument 3 continues monitoring net
Close 1；
Step S2, combination instrument 3 enter Limp home and prepare state, be worth according to the last time and carry out logic calculation, and to NM
Message or the period packet counting of routing；
Step S3 continues to execute step S2 when message loss is counted as 3-10 according to implementation strategy is counted；Work as report
When text loses counting greater than 10, step S4 is continued to execute；When message loss is counted less than 3, step S5 is executed；
Step S4,3 activation signal routing function vehicle of combination instrument enter Limp home mode；
Step S5 exits and empties Limp home preparation state, continues to execute step S1.
Also provided in the utility model embodiment 2 it is a kind of including described in the present embodiment based on the topology of controller LAN
The vehicle of structure, the vehicle component in addition to the above-mentioned topological structure based on controller LAN belong to prior art model
Farmland, this will not be repeated here.
Topological structure and vehicle provided by the utility model based on controller LAN have compared with prior art with
Lower advantage:
1, the real-time that 3 information of combination instrument is shown can be improved；
2, it can maximumlly guarantee basic function of the vehicle after primary gateway failures；
3, the safety and reliability of the operation of vehicle are improved.
The above is only the preferred embodiments of the utility model, are merely illustrative for the utility model, rather than limit
Property processed.The structure and connection type etc. of each component may be changed in the utility model, all practical new at this
The equivalents and improvement carried out on the basis of type technical solution, should not exclude except the protection scope of the utility model.
Claims (10)
1. a kind of topological structure based on controller LAN, which is characterized in that it includes gateway, combination instrument and multiple keys
Network segment structure, multiple key network segment structures are connect with the gateway respectively, the combination instrument respectively with multiple passes
The connection of key network segment structure, each key network segment structure includes bus and several network segment nodes, described based on controller LAN
Two key network segment structures of the first network segment structure and the second network segment structure are included at least in topological structure；The combination instrument can
Execute the first network segment structure and the interstructural data interaction of the second network segment.
2. a kind of topological structure based on controller LAN as described in claim 1, which is characterized in that the combination instrument
For detecting the gateway working condition；After the combination instrument detects the gateway fails, the combination instrument can
Execute the interstructural data interaction of the key network segment and/or triggering limping mode.
3. a kind of topological structure based on controller LAN as described in claim 1, which is characterized in that first network segment
Structure includes the first CAN bus and several first network segment nodes for being arranged in first CAN bus, several first nets
For connecting with the first network segment equipment, first CAN bus is connect with the gateway and the combination instrument Duan Jiedian respectively.
4. a kind of topological structure based on controller LAN as claimed in claim 3, which is characterized in that first network segment
Structure is vehicle body domain CAN network segment structure, and the first network segment equipment includes car body controller, Car's door controlling device and keyless entry
And one-key start system, the car body controller, the Car's door controlling device and the keyless entry and one-key start system are equal
It is connect by first CAN bus with the gateway and the combination instrument.
5. a kind of topological structure based on controller LAN as described in claim 1 or 3 or 4, which is characterized in that described
Two network segment structures include the second CAN bus and several second network segment nodes for being arranged in second CAN bus, several described
Second network segment node for being connect with the second network segment equipment, second CAN bus respectively with the gateway and the combination instrument
Table connection.
6. a kind of topological structure based on controller LAN as claimed in claim 5, which is characterized in that second network segment
Structure is power domain CAN network segment structure, and the second network segment equipment includes buffer controller, electric brake system, gearbox
Controller and control unit of engine, the buffer controller, the electric brake system, the gearbox control and institute
Control unit of engine is stated to connect by second CAN bus with the gateway and the combination instrument.
7. a kind of topological structure based on controller LAN as described in claim 1, which is characterized in that it further includes one
Or multiple auxiliary network segment structures being connected with the gateway.
8. a kind of topological structure based on controller LAN as claimed in claim 7, which is characterized in that the auxiliary network segment
Structure is third network segment structure, and the third network segment structure includes third CAN bus and is arranged in several in third CAN bus
Third network segment node, several third network segment nodes for being connect with third network segment equipment, the third CAN bus with it is described
Gateway connection.
9. a kind of topological structure based on controller LAN as claimed in claim 8, which is characterized in that the third network segment
Structure is information CAN network segment structure, and the third network segment equipment includes multimedia controller, Tachographs and the auxiliary system that parks
System, the multimedia controller, the Tachographs and the parking assisting system pass through the third CAN bus and institute
State gateway connection.
10. a kind of vehicle, which is characterized in that it includes that one kind as described in claim 1-9 is any is based on controller LAN
Topological structure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110971453A (en) * | 2019-11-15 | 2020-04-07 | 中国第一汽车股份有限公司 | Network topology determination method and device, vehicle network topology structure and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971453A (en) * | 2019-11-15 | 2020-04-07 | 中国第一汽车股份有限公司 | Network topology determination method and device, vehicle network topology structure and vehicle |
| CN110971453B (en) * | 2019-11-15 | 2022-10-14 | 中国第一汽车股份有限公司 | Network topology determination method and device, vehicle network topology structure and vehicle |
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Address after: 710201 Jingwei Industrial Zone, Xi'an economic and Technological Development Zone, Shaanxi, China Patentee after: Shaanxi Automobile Group Co.,Ltd. Address before: 710201 Jingwei Industrial Zone, Xi'an economic and Technological Development Zone, Shaanxi, China Patentee before: SHAANXI AUTOMOBILE GROUP Co.,Ltd. |
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