CN207884676U - A kind of In-vehicle networking communication terminal - Google Patents
A kind of In-vehicle networking communication terminal Download PDFInfo
- Publication number
- CN207884676U CN207884676U CN201820316406.4U CN201820316406U CN207884676U CN 207884676 U CN207884676 U CN 207884676U CN 201820316406 U CN201820316406 U CN 201820316406U CN 207884676 U CN207884676 U CN 207884676U
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- China
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- flexray
- lin
- communication terminal
- vehicle networking
- main control
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Abstract
The utility model is related to a kind of In-vehicle networking communication terminal, which uses modularized design, including main control module, CAN communication module, LIN communication modules, FlexRay communication modules.Main control module uses the MC9S12XF512 chips of NXP companies, and it is connect respectively with each function module by Resources on Chip, control and management by main control module to each submodule, by the processes such as message transmissions and protocol conversion, data conversion will be carried out between data in tri- kinds of heterogeneous networks of CAN, LIN, FlexRay, finally realizes the information exchange between three kinds of different bus.
Description
Technical field
The utility model is related to vehicle bus network fields and embedded system field, and in particular to a kind of In-vehicle networking is logical
Believe terminal.Data is in communication with each other i.e. between realization tri- kinds of buses of CAN, LIN, FlexRay.
Background technology
CAN bus have many advantages, such as real-time, transmission range farther out, anti-electromagnetic interference capability it is strong, answered extensively
Among the numerous areas such as mechanical industry, numerically-controlled machine tool, medical instrument and sensor, but the cost is relatively high.LIN is total
The main application range of line is to provide miscellaneous function for existing automotive networking, and bandwidth is smaller, and usual message transmission rate is up to
20kbit/s can used in places such as the occasions for the bandwidth for not needing CAN bus, such as car door, seat, indicator, roof of the vehicle
To substantially reduce the cost for using CAN bus.FlexRay of new generation is the automotive networking of high-speed serial communication, not only has band
The high and low delay of width, the features such as reliability is high, additionally it is possible to overall reduction complexity, and have failure tolerant function, therefore its just by
Gradually replace CAN bus, can on automobile to the higher part of security requirement.CAN, LIN in a very long time,
Tri- kinds of buses of FlexRay will coexist, therefore how to handle the information sharing problem between three kinds of buses is the needs developed at present.
Invention content
In view of the above-mentioned problems, the utility model provides a kind of In-vehicle networking communication terminal.It is total that the communication terminal provides CAN
The interface of line, LIN buses and FlexRay buses receives the data information of three kinds of buses, completes CAN, LIN, FlexRay net
Protocol conversion function between network, and it is respectively sent to CAN communication module, LIN communication modules, FlexRay communication modules, it realizes
Information sharing between tri- kinds of buses of CAN, LIN, FlexRay.
To realize that the communication Protocol Conversion function, the utility model use modularized design, including main control module, CAN
Communication module, LIN communication modules, FlexRay communication modules.Main control module uses the MC9S12XF512 chips of NXP companies, leads to
It crosses on piece interface with other three modules to be connected, under the management and monitoring of main control module, be reached by processes such as protocol conversions
The target of data sharing realizes the communication between tri- kinds of bus network of CAN, LIN, FlexRay.
The main control module uses the MC9S12XF512 chips of NXP companies, is based on enhanced S12X kernels, it is possible to provide 32
16 MCU of position performance, it is low in energy consumption, there is the FlexRay modules for supporting high-speed serial communication, various bit rates to be up to 10
Mbit /s.Using the MSCAN modules for receiving buffer configuration and input with FIFO, for a large amount of message identifiers of processing
End application optimization filtering, reliability is high, at low cost, Resources on Chip is abundant.Main control module passes through abundant Resources on Chip
It is connect respectively with each function module, realizes the management function of terminal.The CAN controller and CAN communication mould carried by piece
Block interconnects, and the FlexRay controllers carried by piece are interconnected with FlexRay communication modules, pass through serial i/O Interface and LIN
Communication module connects.
The CAN communication module is received and dispatched by the MC9S12XF512 on pieces CAN controller of NXP companies and the CAN of TI companies
Device SN65HVD25 compositions, data transmission rate reach as high as 1Mbps, access CAN bus network, realize the company with CAN bus
It connects.
The LIN communication modules are made of the LIN transceivers MC33662 of NXP companies, compatible LIN protocol specifications 1.3,
2.0,2.1, as the supplement of CAN bus, message transmission rate is usually 20kbit/s, realizes the company with LIN bus network
It connects, and carries out data transmission with the miscellaneous equipment in network.
The FlexRay communication modules are by MC9S12XF512 on piece FlexRay controllers and Infineon companies
FlexRay transceivers TLE9222 composition, meets 2.1 specifications of FlexRay, message transmission rate can from 1 Mbps to 10Mbps,
Realize the connection with FlexRay bus network.
Compared with prior art, the utility model has the following advantages that：
It is on the one hand convenient that program is debugged, changed and is transplanted using modularized design, while it is laggard to be also beneficial to day
Row terminal capabilities is safeguarded and Function Extension upgrading；Main control module uses the MC9S12XF512 chips of NXP companies, on piece integrated
Have CAN communication controller and FlexRay communication controller, can be used directly, make to connect between module it is simple and convenient, in this base
Realize that the utility model is at low cost on plinth, it is easier to realize the information sharing between heterogeneous networks；Since LIN buses are as auxiliary
Bus, agreement is simple, does not need special LIN controllers, therefore LIN communication modules are directly connected using LIN transceivers with master control,
Cost is reduced, makes to simplify the structure, is convenient for later period maintenance.
Description of the drawings
Fig. 1 is the utility model terminal structure block diagram.
Fig. 2 is the utility model main control module functional block diagram.
Fig. 3 is the utility model CAN communication module functional block diagram.
Fig. 4 is the utility model LIN communication module functional block diagrams.
Fig. 5 is the utility model FlexRay communication module functional block diagrams.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of In-vehicle networking communication terminal, including main control module, CAN communication module, LIN communication modules,
FlexRay communication modules.The main control module use NXP companies MC9S12XF512 chips, and by Resources on Chip respectively with
Each function module connection, the CAN controller carried specifically by piece is interconnected with CAN communication module, included by piece
FlexRay controllers and FlexRay communication modules interconnect, connect with LIN communication modules by serial i/O Interface, by reporting
The processes such as text transmission and protocol conversion reach the information exchange between three kinds of bus network.
The main control module U1 uses the MC9S12XF512 chips of NXP companies, is based on enhanced S12X kernels, it is possible to provide
16 MCU of 32 performances, it is low in energy consumption, there is the FlexRay modules for supporting high-speed serial communication, various bit rates to be up to
10 Mbit/s.Using the MSCAN modules for receiving buffer configuration and input with FIFO, for a large amount of message identifiers of processing
End application optimization filtering, reliability is high, at low cost, Resources on Chip enriches.Main control module U1 passes through abundant on piece
Resource is connect with each function module respectively, realizes the management function of terminal.Pass through as shown in Fig. 2, physical circuit is master control U1
Pin RXCAN0 and TXCAN0 are electrically connected with the pin R of CAN transceiver and pin D respectively.U1 passes through pin DATA0, DATA1
It is electrically connected respectively with pin TXD1, RXD1 of LIN communication modules U3.U1 by pin RXD_A, TXD_A, TXE_A, DATA8,
DATA9 is electrically connected with pin RXD2, TXD2, TXEN, STBN, ERRN of FlexRay communication modules U4 respectively.
The CAN communication module is received and dispatched by the MC9S12XF512 on pieces CAN controller of NXP companies and the CAN of TI companies
Device SN65HVD25 compositions, data transmission rate reach as high as 1Mbps, access CAN bus network, realize the company with CAN bus
It connects.As shown in Figure 3.Specifically by CAN transceiver U2 pin R, D respectively with the pin RXCAN0 of main control module U1 and
TXCAN0 is electrically connected, and access CAN bus network is used after the resistance of one 120 ohm of the both ends pin CANH, CANL bridging of U2
To prevent signal reflex.
The LIN communication modules are made of the LIN transceivers MC33662 of NXP companies, compatible LIN protocol specifications 1.3,
2.0,2.1, as the supplement of CAN bus, message transmission rate is usually 20kbit/s, realizes the company with LIN bus network
It connects, and carries out data transmission with the miscellaneous equipment in network.As shown in Figure 4.Specifically by the pin of LIN communication modules U3
TXD1, RXD1 are electrically connected with pin DATA0, DATA1 of main control module U1 respectively, and the pin LIN of U3 is directly accessed LIN buses
Network.
The FlexRay communication modules are by MC9S12XF512 on piece FlexRay controllers and Infineon companies
FlexRay transceivers TLE9222 composition, meets 2.1 specifications of FlexRay, message transmission rate can from 1 Mbps to 10Mbps,
Realize the connection with FlexRay bus network.As shown in figure 5, specific connection type be U4 pin RXD2, TXD2, TXEN,
STBN, ERRN are electrically connected with pin RXD_A, TXD_A, TXE_A, DATA8, DATA9 of U1 respectively, pin BM, BP of U4 with
FlexRay bus network is electrically connected, and realizes the connection with FlexRay bus network.
The working process of the utility model is as follows system passes through CAN communication module, LIN communication modules, FlexRay communication modules
Fieldbus is accessed, main control module powers on when access, while being initialized to communication port.When bus network asks to send number
According to when, corresponding CAN, LIN, FlexRay receiver receives the message information transmitted by corresponding bus and is sent to master control respectively
Module, main control module by data after message filtering by keeping in the corresponding data buffer area of main control module, when there is bus needs
When relevant information, related data is sent to the bus receiver of request data and further by main control module after protocol conversion
It is sent to corresponding bus, achievees the purpose that information sharing.
Claims (5)
1. a kind of In-vehicle networking communication terminal, it is characterised in that：The In-vehicle networking communication terminal includes main control module, CAN
Communication module, LIN communication modules, FlexRay communication modules.
2. a kind of In-vehicle networking communication terminal according to claim 1, it is characterised in that：The main control module uses NXP
The MC9S12XF512 chips of company, complete CAN, LIN, FlexRay network between protocol conversion function, realize CAN, LIN,
Information sharing between tri- kinds of buses of FlexRay.
3. a kind of In-vehicle networking communication terminal according to claim 1, it is characterised in that：The CAN communication module by
The MC9S12XF512 on pieces CAN controller of NXP companies and the CAN transceiver SN65HVD25 of TI companies are formed, data transmission
Rate reaches as high as 1Mbps, accesses CAN network, realizes the connection with CAN bus.
4. a kind of In-vehicle networking communication terminal according to claim 1, it is characterised in that：The LIN communication modules by
The LIN transceivers MC33662 composition of NXP companies, compatible LIN protocol specifications 1.3,2.0,2.1, as the supplement of CAN bus,
Message transmission rate is 20kbit/s, realizes the connection with LIN bus network, and carry out data biography with the miscellaneous equipment in network
It is defeated.
5. a kind of In-vehicle networking communication terminal according to claim 1, it is characterised in that：The FlexRay communicates mould
Block is made of MC9S12XF512 on piece FlexRay controllers and the FlexRay transceivers TLE9222 of Infineon companies, is met
2.1 specifications of FlexRay, message transmission rate can realize the connection with FlexRay bus network from 1 Mbps to 10Mbps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820316406.4U CN207884676U (en) | 2018-03-08 | 2018-03-08 | A kind of In-vehicle networking communication terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820316406.4U CN207884676U (en) | 2018-03-08 | 2018-03-08 | A kind of In-vehicle networking communication terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207884676U true CN207884676U (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820316406.4U Expired - Fee Related CN207884676U (en) | 2018-03-08 | 2018-03-08 | A kind of In-vehicle networking communication terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889490A (en) * | 2019-01-02 | 2019-06-14 | 肇庆奥迪威传感科技有限公司 | Protocol conversion device, method, apparatus and storage medium |
-
2018
- 2018-03-08 CN CN201820316406.4U patent/CN207884676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889490A (en) * | 2019-01-02 | 2019-06-14 | 肇庆奥迪威传感科技有限公司 | Protocol conversion device, method, apparatus and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 Termination date: 20190308 |