CN106487688A - A kind of vehicle-mounted multichannel method for routing and system - Google Patents
A kind of vehicle-mounted multichannel method for routing and system Download PDFInfo
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- CN106487688A CN106487688A CN201510538430.3A CN201510538430A CN106487688A CN 106487688 A CN106487688 A CN 106487688A CN 201510538430 A CN201510538430 A CN 201510538430A CN 106487688 A CN106487688 A CN 106487688A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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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
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
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Abstract
The present invention discloses a kind of vehicle-mounted multichannel method for routing and system, including processor module, AVB Switching Module, mobile communication module, WIFI module and CAN interface module, processor module receives in net or nets the request of the lookup target ip address that outer source terminal sends, the corresponding target terminal of target ip address is found according to routing table, makes source terminal and target terminal set up the network connection based on ICP/IP protocol.Processor module receives the control data from AVB Switching Module, mobile communication module and WIFI module, and sends control signal according to control data to CAN interface module.The present invention is greatly improved the transmission speed within In-vehicle networking by the route setting up multichannel road, realize solving the problems, such as can not route between vehicle body control unit and vehicle-mounted WIFI network simultaneously, characteristic according further to AVB Switching Module, realize carrying out communication scanner to packet by AVB gateway firewall, possess anti-attack ability.Also achieve the network data communication of WIFI network and CAN.
Description
Technical field
The present invention relates to the structure of In-vehicle networking, particularly to a kind of vehicle-mounted multichannel method for routing and system.
Background technology
With the fast development of informationization technology, its Technology application to every field, it is widely applied very much in Automobile Electronic Industry, the development of car networking is based on the network communications technology, completed car information interconnection and intercommunication between car, Che Yulu, car and people.In addition automobile is no longer simple vehicles, the enriching constantly of vehicle entertainment system, and the increase of vehicle electronic device, need to transmit substantial amounts of data.As, to main display, its quantity of information is more huge for the picture transmission that vehicle body front camera and rear camera is provided.ADAS (advanced DAS (Driver Assistant System)), 360 degree of panoramic parking systems, automotive networking must support display floater transmission more than 720p HD video before headstock and the tailstock are in real time to driver, want the data signal of transmission of high-definition, it is all the method with compression at present, need 30M bandwidth after overcompression, current CAN is difficult to bearer network bandwidth, simultaneously, with the increase of in-car smart machine, the interaction between smart machine also improves the requirement of In-vehicle networking.
Content of the invention
The invention aims to overcoming the defect of above-mentioned background technology, provide a kind of vehicle-mounted multichannel method for routing and system.
A kind of vehicle-mounted multichannel method for routing, including processor module, AVB Switching Module, mobile communication module, WIFI module and CAN interface module, described WIFI module is connected for setting up wireless network with handheld terminal, and described AVB Switching Module is connected for setting up cable network with automotive interior control unit;Route communication is can achieve, concrete method for routing comprises the steps between described AVB Switching Module, mobile communication module, WIFI module and CAN interface module:
First network segment routing table of the processor module record WIFI module place network segment and the second network segment routing table of the AVB Switching Module place network segment;
Processor module receives the request of the lookup target ip address that source terminal in net sends, and the corresponding target terminal of target ip address is found according to described first network segment routing table and the second network segment routing table, make source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN;
Processor module receives the request of the lookup target ip address from mobile communication module, and the corresponding target terminal of target ip address is found according to described first network segment routing table and the second network segment routing table, make target terminal and external network source terminal set up the network connection based on ICP/IP protocol;
Processor module receives the control data from described AVB Switching Module, mobile communication module and WIFI module, and sends control signal according to control data to CAN interface module.
Further, described target terminal lookup method comprises the steps:
S10, processor module receive the request of the lookup target ip address that source terminal sends, and search the corresponding terminal of target ip address in the network segment that source terminal is located, if the corresponding terminal of target ip address is in this network segment, execution step S20, otherwise execution step S30;
S20, wait target terminal response, make source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN;
S30, the gateway transmission ARP request to another network segment, this gateway is broadcasted, and obtains the MAC Address of target terminal, makes source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN.
Preferably, described processor module can limit the control of the terminal-pair CAN interface module of specific IP.
Preferably, described mobile communication module is 4G module.
In addition, the present invention also provides a kind of vehicle-mounted multichannel route system based on above-mentioned vehicle-mounted multichannel method for routing, including processor module, AVB Switching Module, mobile communication module, WIFI module and CAN interface module, described WIFI module is connected for setting up wireless network with handheld terminal, and described AVB Switching Module is connected for setting up cable network with automotive interior control unit;Described AVB Switching Module sets up the LAN with multisegment by described processor module with described WIFI module;WIFI module is connected with external network by described mobile communication module with described AVB Switching Module;Selectively the signal according to described WIFI module, AVB gateway and mobile communication module sends control signal to CAN interface module to described processor module.
Further, described mobile communication module is 4G module.
The present invention is greatly improved the transmission speed within In-vehicle networking by the route setting up multichannel road, realize solving the problems, such as can not route between vehicle body control unit and vehicle-mounted WIFI network simultaneously, characteristic according further to AVB Switching Module, realize carrying out communication scanner to packet by AVB gateway firewall, possess anti-attack ability.Also achieve the network data communication of WIFI network and CAN.
Brief description
Fig. 1 is the system architecture figure of the present invention.
Fig. 2 is the data cube computation figure of the present invention.
Fig. 3 is that in the net of the present invention, terminal connects flow chart.
Specific embodiment
Below in conjunction with accompanying drawing, the vehicle-mounted multichannel method for routing of the present invention and system are further described.
A kind of vehicle-mounted multichannel method for routing and system, for realizing the network interconnection in vehicle environment and route.Vehicle-mounted multichannel route system therein, this vehicle-mounted multichannel route system includes processor module, AVB Switching Module, mobile communication module, WIFI module and CAN interface module, as shown in Figure 1.Processor module is connected with AVB Switching Module, mobile communication module, WIFI module and CAN interface module respectively.Wherein AVB Switching Module is used for setting up cable network in LAN, and WIFI module then setting up wireless networks in LAN;In addition CAN interface module is then used for control signal and the feedback various status signal of automobile of transmission processor module;Last mobile communication module is then used for connecting LAN and the Internet.In order to ensure transmission speed, in the present embodiment, mobile communication module employs 4G module, and it can pass through the Internet long-range receiving data signal and control signal, realizes vehicle-mounted data interaction and the remotely control of teledata.All communicated by ICP/IP protocol, as shown in Figure 2 between above-mentioned several module.
Specifically, WIFI module is connected for setting up wireless network with handheld terminal, such as mobile phone, notebook and panel computer etc..These handheld terminals by connecting the data interaction that WIFI module carries out each other, or can be attached by other control units of vehicle-mounted multichannel route system and automotive system in automotive environment, realizes monitoring or control.In addition, AVB Switching Module is connected for setting up cable network with automotive interior control unit, it is mainly used in planning as a whole multiple electronic control units in automotive system, as car light, car door, air-conditioning, multimedia and the first-class control unit of shooting, each control unit has the MAC code of oneself, AVB Switching Module is all connected by cable with these units, is simultaneously based on ICP/IP protocol and is communicated.Considerably increase the data transmission bauds of control unit.In order to improve safety, processor module passes through AVB Switching Module and WIFI module sets up the LAN with multisegment, the network segment residing for terminal connecting WIFI module is differed with the network segment residing for the control unit being connected AVB Switching Module, each network segment is designed with gateway firewall, and packet can be filtered.
And concrete vehicle-mounted multichannel method for routing, comprise the steps:
First network segment routing table of the processor module record WIFI module place network segment and the second network segment routing table of the AVB Switching Module place network segment;Specifically, WIFI module and AVB Switching Module carry out gateway broadcasts, the IP address of acquisition network segment inner connection terminal or control unit and corresponding MAC Address all in the network segment of itself, and routing table is sent in the middle of the caching of processor module.The routing table that processor module is cached at a certain time interval or has new terminal WIFI module and AVB Switching Module all can be controlled to re-broadcast when accessing, to ensure that routing table is in last state.
Method for routing in LAN, processor module receives the request of the lookup target ip address that source terminal in net sends, and the corresponding target terminal of target ip address is found according to the first network segment routing table and the second network segment routing table, make source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN;Idiographic flow is as shown in Figure 3:
S10, processor module receive the request of the lookup target ip address that source terminal sends, first determine whether the network segment that the IP address of source terminal is located, the corresponding target terminal of target ip address is searched in the network segment that source terminal is located, if the corresponding terminal of target ip address is in this network segment, execution step S20, otherwise execution step S30;
S20, connection request is sent to target terminal, wait target terminal response, after target terminal response, processor module returns the IP address determining and MAC Address to source terminal, makes source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN;
S30, processor module send ARP request to the gateway of another network segment, the gateway receiving request is broadcasted, obtain the MAC Address of target terminal after target terminal response, make source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN.If the target terminal MAC Address of Target IP can be inquired on the routing table that processor module is cached, directly MAC Address can be returned to source terminal, to save process time.
After setting up network connection in LAN, source terminal and target terminal can achieve data transfer or the state control realizing terminal.As panoramic parking system, being connected to smart mobile phone under WIFI module can be connected with the panoramic parking system being connected under AVB Switching Module foundation by ICP/IP protocol.Can control the opening and closing of panoramic parking system by smart mobile phone, and the picture signal obtaining panoramic parking system.The transmission speed of data is much larger than the transmission speed of CAN under such an arrangement, and can carry out the unlatching of panoramic parking system at any time.Operation is more flexible.
Method for routing outside LAN, connection request is sent to mobile communication module by the equipment being on the Internet or terminal, processor module reads and parses the request of the lookup target ip address from mobile communication module, the first network segment routing table first according to processor cache and the second network segment routing table make a look up, find the corresponding target terminal of target ip address, make target terminal and external network source terminal set up the network connection based on ICP/IP protocol.Meanwhile, the terminal in LAN or control unit can also realize the connection of the Internet by mobile communication module.
When in LAN control unit or terminal need in connect CAN when, can first connection request or control data be sent in the middle of processor module, processor module receives after the request signal of AVB Switching Module, mobile communication module and WIFI module, according to user setup or default acknowledgment strategy, send control signal to CAN interface module, or obtain various information from CAN.Thus by signal back source terminal it is achieved that the interacting of other-end and CAN in LAN.Because the other-end in LAN is required to through processor module with interacting of CAN, therefore, processor module can filter the packet of particular terminal, reach the purpose forbidding that particular terminal connects CAN, increased safety.
Above in conjunction with accompanying drawing, embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also various changes can be made on the premise of without departing from present inventive concept.
Claims (6)
1. a kind of vehicle-mounted multichannel method for routing it is characterised in that:Including processor module, AVB Switching Module, mobile communication module, WIFI module and CAN interface module, described WIFI module is connected for setting up wireless network with handheld terminal, and described AVB Switching Module is connected for setting up cable network with automotive interior control unit;Route communication is can achieve, concrete method for routing comprises the steps between described AVB Switching Module, mobile communication module, WIFI module and CAN interface module:
First network segment routing table of the processor module record WIFI module place network segment and the second network segment routing table of the AVB Switching Module place network segment;
Processor module receives the request of the lookup target ip address that source terminal in net sends, and the corresponding target terminal of target ip address is found according to described first network segment routing table and the second network segment routing table, make source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN;
Processor module receives the request of the lookup target ip address from mobile communication module, and the corresponding target terminal of target ip address is found according to described first network segment routing table and the second network segment routing table, make target terminal and external network source terminal set up the network connection based on ICP/IP protocol;
Processor module receives the control data from described AVB Switching Module, mobile communication module and WIFI module, and sends control signal according to control data to CAN interface module.
2. voice extracting method as claimed in claim 1 is it is characterised in that described target terminal lookup method comprises the steps:
S10, processor module receive the request of the lookup target ip address that source terminal sends, and search the corresponding target terminal of target ip address in the network segment that source terminal is located, if target terminal is in this network segment, execution step S20, otherwise execution step S30;
S20, wait target terminal response, make source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN;
S30, the gateway transmission ARP request to another network segment, this gateway is broadcasted, and obtains the MAC Address of target terminal, makes source terminal and target terminal in the network connection of the built-in ICP/IP protocol that is based on of LAN.
3. voice extracting method as claimed in claim 1 is it is characterised in that described processor module can limit the control of the terminal-pair CAN interface module of specific IP.
4. voice extracting method as described in any of claims 1 is it is characterised in that described mobile communication module is 4G module.
5. a kind of vehicle-mounted multichannel route system based on the vehicle-mounted multichannel method for routing described in claim 1, including processor module, AVB Switching Module, mobile communication module, WIFI module and CAN interface module it is characterised in that:Described WIFI module is connected for setting up wireless network with handheld terminal, and described AVB Switching Module is connected for setting up cable network with automotive interior control unit;Described AVB Switching Module sets up the LAN with multisegment by described processor module with described WIFI module;WIFI module is connected with external network by described mobile communication module with described AVB Switching Module;Selectively the signal according to described WIFI module, AVB gateway and mobile communication module sends control signal to CAN interface module to described processor module.
6. as claimed in claim 5 vehicle-mounted multichannel route system it is characterised in that described mobile communication module be 4G module.
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