CN202110429U - Multi-on-site bus whole-vehicle control network for pure electric vehicle - Google Patents
Multi-on-site bus whole-vehicle control network for pure electric vehicle Download PDFInfo
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- CN202110429U CN202110429U CN2011201738433U CN201120173843U CN202110429U CN 202110429 U CN202110429 U CN 202110429U CN 2011201738433 U CN2011201738433 U CN 2011201738433U CN 201120173843 U CN201120173843 U CN 201120173843U CN 202110429 U CN202110429 U CN 202110429U
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Abstract
A multi-on-site bus whole-vehicle control network for a pure electric vehicle comprises a diagnosis tool, a whole-vehicle electronic control system, a low-speed CAN bus, a high-speed CAN bus, a double-channel FlexRay and an adaptive multi-bus protocol. The network is favorable for realizing electronic control integration and information integration for a vehicle.
Description
Technical field
The utility model relates to a kind of vehicle-mounted many fieldbus communication network, particularly many fieldbus of pure electric automobile car load Control Network.
Background technology
At present, known pure electric automobile whole-control system is directly to adopt in the orthodox car mature C AN bus system basically, can not satisfy the bus system requirement of pure electric automobile fully.Number of electronic devices greatly increases in the pure electric automobile, and electronic noise increases in the car, and the controller of integrated ECU and bandwidth, speed and the topological structure mode that topworks provides bus system are had higher requirement simultaneously.Car-mounted electronic device can be divided into four big departments by the topworks and the performance requirement of communication: information portion, transmission and chassis portion, automobile body part and intelligent transportation portion.Because there is a great difference in this four big department to the transmission rate request of bus, CAN bus width scope and bus structure can not satisfy line traffic control unit and multimedia recreation demands of applications in the electric automobile fully.So just can not form the car load Control Network of a complete specifications.
Electronic installation increases rapidly in the pure electric automobile of future generation, and a large amount of uses of line traffic control unit and multimedia entertainment equipment certainly will need many fieldbus to merge the bus system of hierarchical control.This will make the car load Control Network form the general layout of " local one-tenth net, regional interconnected ".Adopt the high bus of transfer rate in transmission and chassis portion, requirement of real time adopts the bus that bandwidth is big, speed is fast in information portion, satisfies the transmission requirement of image information.The upper strata control of all departments coordinates to adopt the CAN bus of support bus arbitration mechanism, and all departments' subnet is fused into the car load Control Network through gateway, improves network reliability and control harmony, and this has progressively become the development trend of car load Control Network.
" automotive safety and energy-conservation journal " 2010 2 interim " based on the Chang'an hybrid power network system design and the application of CAN bus " literary compositions have proposed a kind of technical solution; That is: adopt two CAN buses to make up sub-vehicle-carrying communication network; Entire car controller is accomplished the gateway of two CAN, accomplishes message exchange between each communication module.Do not consider that line traffic control unit and the multimedia recreation of pure electric vehicle use the demand to bus bandwidth, along with the continuous development of pure electric automobile, this network information system still can not satisfy the network application demand of pure electric automobile fully.
In " automobile engineering " 2011 2 phases " automobile TTCAN real-time is analyzed and visual research "; Use the TTCAN agreement, solved deficiencies such as the event trigger mechanism of traditional C AN bus is unpredictable with Fixed Priority Schedule Algorithm exists message under relatively poor transmission conditions transmission, low priority message is prone to obstruction, network resource utilization is low.This agreement also is based on traditional CAN bus topolopy, and the key distinction is in the agreement of application layer and session layer, and the thought of not utilizing other high performance bus to combine can not satisfy the requirement of pure electric automobile of future generation to bus.
In the prior art, the car load network that makes up pure electric automobile is lacked actual, feasible scheme.
Summary of the invention
The purpose of the utility model is the deficiency to prior art; Make up a kind of many fieldbus of pure electric automobile car load Control Network; The car load network structure that the design multibus merges improves network reliability and control harmony, realizes that many fieldbus merge; Give full play to different fieldbus advantages, to satisfy the requirement that pure electric automobile of future generation is big to bus width, reliability is high, topological structure is various and cost is suitable.
The utility model solves the technical scheme that its technical matters adopted: with CAN bus, Flex Ray bus, LIN bus and 1394 buses, constitute two-layer distributed areas interconnection type bus system.Adopt the reliability height, wear the high Flex Ray bus of transfer rate in transmission and chassis portion, adopt 1394 buses that bandwidth is big, speed is fast, adopt cost LIN bus low, simple in structure in automobile body part in information portion.The high level control of all departments coordinates to adopt the CAN bus of support bus arbitration mechanism, and all departments' subnet is fused into the car load Control Network through gateway, improves network reliability and control harmony.
The formation of the utility model comprises: diagnostic tool, finished vehicle electronic control system, low speed CAN bus, low speed CAN bus, LIN bus, high-speed CAN bus, double-channel Flex Ray and self-adaptive multibus agreement; The finished vehicle electronic control system is connected respectively to automobile body part, information portion, transmission and the chassis portion that vehicle electronics are housed through three independent CAN buses, forms the ground floor network; Adopt Flex Ray bus in transmission and chassis portion, adopt 1394 buses, adopt the LIN bus, form second layer network in automobile body part in information portion.
The CAN bus that the finished vehicle electronic control system is used is respectively 2 125kbpsCAN buses and 1 500kbpsCAN bus.The total agreement of self-adaptive multibus agreement is made up of order, response, mistake, incident, service request handler, data acquisition and excitation, is the master slave mode agreement, and sub-protocol comprises CAN to CAN, and CAN is to Flex Ray.
In many fieldbus car load Control Network structural drawing (referring to accompanying drawing 1); Line traffic control unit such as transmission and chassis portion are responsible for motor, turn to, braking and tire pressure; The communication information requires good real-time and very high reliability, uses two-channel Flex Ray bus structure to guarantee communicating requirement.Information portion is connecting CD player, video, navigation and electronic anti-theft etc., and particularly video equipment has high requirements to bus width and transfer rate, uses 1394 buses as amusement equipment big bandwidth and transfer rate to be provided specially.Traditional performers such as air-conditioning, instrument, car door and self-adaptation headlight are arranged in automobile body part, and the control signal that needs is simple, considers wiring and cost, and only is to select main many LIN buses from single line control for use.This four big inter-sectional employing of transmission and chassis portion, information portion, automobile body part and intelligent transportation portion has the CAN bus of arbitrating control strategy; Article three, the independent CAN bus concentrates on four big interdepartmental exchanges data in the finished vehicle electronic control system, has formed upper strata car load Control Network.The unique advantage of Flex Ray, LIN and 1394 buses has been given full play in such design, has guaranteed the requirement of electronic equipment to bus bandwidth, speed and reliability.Upper layer application makes the car load Control Network be easy to management than mature C AN bus network simultaneously, has improved the stability of network system, makes things convenient for fault diagnosis.
The described finished vehicle electronic control system of the utility model (referring to accompanying drawing 2); Clock module (being used for being provided time date accurately) and the solenoid valve, the relay (being used for the circuit protection aspect) that comprise control system MCU (3 groups of CAN controllers of its inner integrated independence, 1 group of independent F lex Ray controller), 3 groups of CAN transceivers and optical coupling isolator, 1 group of Flex Ray transceiver, SPI communication to system.The finished vehicle electronic control system provides 3 groups of CAN bus and 1 group of Flex Ray buses that performance is identical, and three groups of CAN buses are: in order to accomplish that transmission and this four big departments regional network of chassis portion, information portion, automobile body part and intelligent transportation portion is interconnected.Play the purpose of data hierarchy management.
The utility model utilizes data segment to design upper layer application protocol on the basis of bus physical layer host-host protocol; Be called self-adaptive multibus agreement (referring to accompanying drawing 3); The total agreement of multibus agreement is made up of order, response, mistake, incident, service request handler, data acquisition and excitation, is the master slave mode agreement.Wherein ordering and encouraging is the one-way data that main frame is given slave, and order has comprised the command request content of main frame to slave, is actuated to handshake.After main frame is set up the task success, for the agreement of slave, be divided into mistake, incident, service request handler, data acquisition and response to the main frame feedback data, wherein response is handshake.After the foundation of finishing the work, the data segment on the bus can take for data stream fully, and only needs the main frame monitoring reception, till main frame sends other order.
The CAN bus structure are used on the utility model upper strata, use its maturity of technology, have guaranteed the reliability and stability of electric room control data.At same interdepartmental devices communicating, the characteristics of bonding apparatus are used more suitable bus, form second layer regional network structure.
The utility model is connecting four big interdepartmental communications through three CAN buses, and design is accomplished the enforcement to the control strategy of car load based on the whole-control system of this bus.In information portion, 1394 bus communications of the excessive bandwidth of data circulation, two-forty between amusement equipment, command stream then by the domination of CAN bus, has been accomplished being used in combination of CAN bus and 1394 buses, gives full play to performance separately; In the driving section, Flex Ray bus provides high speed, reliable communication bus for the equipment that needs line traffic control, and the quantity of state monitoring of equipment then is responsible for by the CAN bus; In automobile body part, accomplish the communication of control command for topworkies such as air-conditioning, instrument panel through CAN, low through cost then, the simple LIN bus of line is distributed to actuator with order.
The beneficial effect of the utility model is: based on multibus topological structure exploitation self-adaptive multibus agreement; CAN bus, Flex Ray bus, LIN bus communication are united; Make full use of various bus advantages, ensure the realization that Vehicle Electronic Control is integrated, information is unitized.
The utility model is on the basis of satisfying the requirement of existing electric automobile whole Control Network structure; With distinct device communication need stratification; Merge different fieldbus advantages; Both guarantee communication structure demand and communication speed requirement, guaranteed the stability of car load Control Network again, be the reliable communication network of electronic information development structure of electric automobile.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is many fieldbus car load Control Network structural drawing, comprising: diagnostic tool, finished vehicle electronic control system, low speed CAN bus, low speed CAN bus, LIN bus, high-speed CAN bus, double-channel Flex Ray.
Fig. 2 is the finished vehicle electronic control system.
Fig. 3 is the self-adaptive multibus agreement.
In Fig. 1, finished vehicle electronic control system (2) is connected to the low speed CAN bus (3) of information portion, low speed CAN bus (4), transmission and the chassis portion of automobile body part and the high-speed CAN bus (6) and the double-channel Flex Ray bus (7) of intelligent transportation portion through 3 independent CAN buses.Accomplish the ground floor control of multibus network, wherein, accomplish CAN bus and Flex Ray bus physical gateway and communication protocol based on the self-adaptive multibus agreement of mature C AN bus application technology and exploitation.Diagnostic tool (1) links to each other with the finished vehicle electronic control system, accomplishes the monitoring of many fieldbus car load Control Network and the storage of wrong status information are shown.
In embodiment illustrated in fig. 2, the MCU of finished vehicle electronic control system adopts TMS570LS, and inner integrated 3 independent CAN buses and 1 tunnel double-channel Flex Ray bus are accomplished conversion of signals through its corresponding transceiver, realize electrical isolation through high speed photo coupling.The CAN transceiver adopts TJA1040, and Flex Ray transceiver adopts TJA1080T.The IO mouth is through impact damper control electromagnetic valve, relay and switching signal topworks.
In agreement shown in Figure 3, the multibus protocol figure is total agreement of self-adaptive multibus agreement, is divided into order, response, mistake, incident, service request handler, data acquisition and excitation by protocol format.Total agreement adopts master slave mode, command definition the mission requirements of main frame to slave, thereby initialization master-slave communication bus form.Response is for the handshake of slave to Host Command, so that the existence of host acknowledgement slave.Incident is the slave current state, thereby confirms the sub-communications protocol of current use in the multibus agreement.After the master slave mode initialization finishes, can carry out big data transmission, this moment, main frame sent pumping signal, and slave is pressed the main frame excitation and sent particular data.Sub-protocol comprises CAN to CAN, and CAN is to Flex Ray.
Claims (3)
1. many fieldbus of pure electric automobile car load Control Network, it is characterized in that: said Control Network comprises diagnostic tool, finished vehicle electronic control system, low speed CAN bus, low speed CAN bus, LIN bus, high-speed CAN bus, double-channel Flex Ray and self-adaptive multibus agreement; The finished vehicle electronic control system is connected respectively to automobile body part, information portion, transmission and the chassis portion that vehicle electronics are housed through three independent CAN buses, forms the ground floor network; Adopt Flex Ray bus in transmission and chassis portion, adopt 1394 buses, adopt the LIN bus, form second layer network in automobile body part in information portion.
2. many fieldbus of pure electric automobile car load Control Network according to claim 1 is characterized in that: the CAN bus that the finished vehicle electronic control system is used is respectively 2 125kbpsCAN buses and 1 500kbpsCAN bus.
3. many fieldbus of pure electric automobile car load Control Network according to claim 1; It is characterized in that: the total agreement of self-adaptive multibus agreement is made up of order, response, mistake, incident, service request handler, data acquisition and excitation; Be the master slave mode agreement; Sub-protocol comprises CAN to CAN, and CAN is to Flex Ray.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201738433U CN202110429U (en) | 2011-05-27 | 2011-05-27 | Multi-on-site bus whole-vehicle control network for pure electric vehicle |
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| CN2011201738433U CN202110429U (en) | 2011-05-27 | 2011-05-27 | Multi-on-site bus whole-vehicle control network for pure electric vehicle |
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| CN202110429U true CN202110429U (en) | 2012-01-11 |
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| CN2011201738433U Expired - Fee Related CN202110429U (en) | 2011-05-27 | 2011-05-27 | Multi-on-site bus whole-vehicle control network for pure electric vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193549A (en) * | 2011-05-26 | 2011-09-21 | 南昌大学 | Multi-field bus vehicle control network for pure electric vehicle |
| CN103692920A (en) * | 2012-09-28 | 2014-04-02 | 北京理工大学 | Network control scheme supporting multiple electric vehicle charging modes |
| CN108982121A (en) * | 2018-07-27 | 2018-12-11 | 中国汽车技术研究中心有限公司 | A kind of multi-channel information synchronization system for mark vehicle analysis |
| CN109849686A (en) * | 2019-02-22 | 2019-06-07 | 北京理工大学 | The believable network control chassis system and control method of electric car |
| CN111147338A (en) * | 2019-12-19 | 2020-05-12 | 上海大学 | Interface design method from vehicle-mounted wired network to wireless network |
-
2011
- 2011-05-27 CN CN2011201738433U patent/CN202110429U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193549A (en) * | 2011-05-26 | 2011-09-21 | 南昌大学 | Multi-field bus vehicle control network for pure electric vehicle |
| CN103692920A (en) * | 2012-09-28 | 2014-04-02 | 北京理工大学 | Network control scheme supporting multiple electric vehicle charging modes |
| CN103692920B (en) * | 2012-09-28 | 2016-01-06 | 北京理工大学 | A kind of network-controlled scheme supporting the multiple charge mode of battery-driven car |
| CN108982121A (en) * | 2018-07-27 | 2018-12-11 | 中国汽车技术研究中心有限公司 | A kind of multi-channel information synchronization system for mark vehicle analysis |
| CN108982121B (en) * | 2018-07-27 | 2020-09-22 | 中国汽车技术研究中心有限公司 | Multi-channel information fusion system for analyzing target vehicles |
| CN109849686A (en) * | 2019-02-22 | 2019-06-07 | 北京理工大学 | The believable network control chassis system and control method of electric car |
| CN109849686B (en) * | 2019-02-22 | 2020-04-14 | 北京理工大学 | Trusted network control chassis system and control method of electric automobile |
| CN111147338A (en) * | 2019-12-19 | 2020-05-12 | 上海大学 | Interface design method from vehicle-mounted wired network to wireless network |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20120111 Termination date: 20120527 |