CN110677332A - Design method of FlexRay bus star coupler with network configuration and network management functions - Google Patents
Design method of FlexRay bus star coupler with network configuration and network management functions Download PDFInfo
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- CN110677332A CN110677332A CN201910896414.XA CN201910896414A CN110677332A CN 110677332 A CN110677332 A CN 110677332A CN 201910896414 A CN201910896414 A CN 201910896414A CN 110677332 A CN110677332 A CN 110677332A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0893—Assignment of logical groups to network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40241—Flexray
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention relates to a design method of a FlexRay bus star-shaped coupler with network configuration and network management functions, and belongs to the technical field of vehicle electronic information. The problems that the traditional star coupler is poor in universality and adaptability and does not have expansion capability are solved by dynamically configuring the FlexRay bus network; the network branch state is monitored in real time, network management operations such as connection and disconnection are carried out on the network branches according to the real-time state of the network branches, communication faults of the network branches with faults are isolated in time, and the influence of local faults on the whole network communication is avoided.
Description
Technical Field
The invention belongs to the technical field of vehicle electronic information, and particularly relates to a design method of a FlexRay bus star coupler with network configuration and network management functions.
Background
FlexRay is a new generation network technology in the field of automotive electronics, and a complex FlexRay network comprising a plurality of network nodes usually adopts a star-type network topology, and the whole network can be divided into a plurality of branches and connected through a star-type coupler.
Firstly, the traditional FlexRay star coupler only has the function of interconnecting all network branches, and cannot monitor and manage the states of all network branches in real time, so that the normal work of the whole network is influenced by the fault of a certain branch.
Secondly, the traditional FlexRay star coupler has fixed branch number and is not configurable, so that the product universality is poor, the system adaptability is poor, and the upgrading and expanding capability is not provided.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to design a design method of a FlexRay bus star coupler with network configuration and network management functions.
(II) technical scheme
In order to solve the technical problem, the invention provides a design method of a FlexRay bus star coupler with network configuration and network management functions, wherein the design method comprises the steps of connecting the two foremost network branches of a FlexRay bus together, then arranging a dial switch between each network branch and the preceding network branch when adding one network branch, and directly connecting the two last network branches together. And adjusting the state of the dial switch according to actual use requirements to form one or more independent network segments.
Preferably, in the design method, each network branch is monitored in real time, and each network branch is provided with a working indicator light and an error indicator light, when one of the network branches has data transmission, the corresponding working indicator light flashes at a certain frequency, and when no data transmission exists, the working indicator light is turned off; when the network branch has an error frame, the corresponding error indicator lamp is turned on, and when no error frame exists, the corresponding error indicator lamp is turned off; the communication of the network branch is closed when there is a short circuit of the network branch, and the state of the respective network branch is uploaded via the FlexRay bus.
The invention also provides a working method of the FlexRay star coupler designed by the method, which comprises the following steps:
firstly, setting a dial switch according to actual use requirements as follows:
if the formed network segment needs to occupy all network branches of the star coupler, all dial switches are dialed to the open position, and all network branches form an independent network segment;
and step two, connecting the cable, switching on the power supply, starting the star coupler to work, observing the state of each network branch of the star coupler through the working indicator lamp and the error indicator lamp, and performing corresponding treatment when needed.
Preferably, in the first step, if the star coupler has 8 network branches, three network branches need to be configured, one network branch needs two network branches, and the other two network branches need three network branches, and the network branches are defined as the first network branch to the eighth network branch in the order from front to back, the following settings are performed:
toggling a toggle switch between the second network branch and the third network branch to an off position;
toggling a toggle switch between the third network branch and the fourth network branch to an on position;
toggling a toggle switch between the fourth network branch and the fifth network branch to an on position;
dialing a dial switch between the fifth network branch and the sixth network branch to an off position;
the toggle switches between the sixth network branch and the seventh network branch are toggled to an on position.
Preferably, the second step is specifically:
if each network branch works normally and has data transmission, the working indicator lamp corresponding to each network branch flashes at a certain frequency;
if one or more network branches have error frames, an error indicator lamp corresponding to the network branch flashes at a certain frequency;
if one or more network branches are short-circuited, the error indicating lamp corresponding to the network branch is normally on, the network branch is closed, the communication between the network branch and other network branches is cut off, and fault isolation is carried out.
(III) advantageous effects
The problems that the traditional star coupler is poor in universality and adaptability and does not have expansion capability are solved by dynamically configuring the FlexRay bus network; the network branch state is monitored in real time, network management operations such as connection and disconnection are carried out on the network branches according to the real-time state of the network branches, communication faults of the network branches with faults are isolated in time, and the influence of local faults on the whole network communication is avoided.
Drawings
FIG. 1 is a schematic diagram of the design of the star coupler of the present invention.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The invention provides a design method of a FlexRay bus star coupler with network configuration and network management functions, which comprises the following steps:
(1) as shown in fig. 1, the two first network branches of the FlexRay bus are connected together, then for each additional network branch a dip switch is provided between the network branch and the first network branch, and the last two network branches are directly connected together. Adjusting the state of the dial switch according to actual use requirements to form one or more independent network segments;
(2) each network branch is monitored in real time, a working indicator light and an error indicator light are arranged on each network branch, when one network branch has data transmission, the corresponding working indicator light flashes at a certain frequency, and when no data transmission exists, the corresponding working indicator light is turned off; when the network branch has error frames, the corresponding error indicator lamps are turned on, and when no error frame exists, the corresponding error indicator lamps are turned off. And when one network branch is short-circuited, the communication of the network branch is closed, and the state of each network branch is uploaded through a FlexRay bus.
The working process of the FlexRay star coupler with the network management and network configuration functions provided by the invention is as follows:
firstly, setting a dial switch according to actual use requirements as follows:
if the network section needs more network nodes and needs to occupy all the network branches of the star coupler, all the dial switches are dialed to the on position, and all the network branches form an independent network section;
if the star coupler has 8 network branches, three network branches are required to be configured, one network branch needs two network branches, the other two network branches need three network branches, and the network branches are defined as a first network branch to an eighth network branch according to the sequence from front to back, the following settings are performed:
toggling a toggle switch between the second network branch and the third network branch to an off position;
toggling a toggle switch between the third network branch and the fourth network branch to an on position;
toggling a toggle switch between the fourth network branch and the fifth network branch to an on position;
dialing a dial switch between the fifth network branch and the sixth network branch to an off position;
toggling a toggle switch between the sixth network branch and the seventh network branch to an on position;
(II) connecting a cable, switching on a power supply, starting the star coupler to work, observing the state of each network branch of the star coupler through a working indicator light and an error indicator light, and performing corresponding treatment when needed:
if each network branch works normally and has data transmission, the working indicator lamp corresponding to each network branch flashes at a certain frequency;
if one or more network branches have error frames, an error indicator lamp corresponding to the network branch flashes at a certain frequency;
if one or more network branches are short-circuited, the error indicating lamp corresponding to the network branch is normally on, the network branch is closed, the communication between the network branch and other network branches is cut off, and fault isolation is carried out.
And monitoring equipment can be connected to the interface of each network segment to monitor the state of each network branch of the satellite coupling.
The FlexRay bus star coupler with the network configuration and network management functions has the network segment and network branch dynamic configuration functions, and can configure FlexRay network nodes connected with equipment into one or more independent network segments according to application requirements, wherein each network segment can be configured with a plurality of network branches. The networking requirements of different application systems can be met through network dynamic configuration, and the flexibility and the expansibility of the network are improved; the equipment has the function of monitoring the branch state of the connected FlexRay network, can monitor the data transmission state of each network branch in real time, and can carry out network management operations such as connection, disconnection and the like on the network branches according to the real-time state of the network branches. Through network management, communication faults of a certain network branch can be isolated, and the influence of local faults on the whole network communication is avoided.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A design method of a FlexRay bus star coupler with network configuration and network management functions is characterized in that the design method is that the first two network branches of a FlexRay bus are connected together, then a dial switch is arranged between the network branch and the first network branch every time one network branch is added, and the last two network branches are directly connected together. And adjusting the state of the dial switch according to actual use requirements to form one or more independent network segments.
2. The method of claim 1, wherein in the design method, each network branch is monitored in real time, and each network branch is provided with a working indicator light and an error indicator light, when one of the network branches has data transmission, the corresponding working indicator light flashes at a certain frequency, and when no data transmission exists, the corresponding working indicator light is extinguished; when the network branch has an error frame, the corresponding error indicator lamp is turned on, and when no error frame exists, the corresponding error indicator lamp is turned off; the communication of the network branch is closed when there is a short circuit of the network branch, and the state of the respective network branch is uploaded via the FlexRay bus.
3. The method of claim 1, wherein the design method further includes attaching a monitoring device at the interface of each segment for monitoring the status of the respective network branch of the star coupler.
4. A method of operating a FlexRay star coupler designed by the method of claim 1 or 2 or 3, characterized in that it comprises the following steps:
firstly, setting a dial switch according to actual use requirements as follows:
if the formed network segment needs to occupy all network branches of the star coupler, all dial switches are dialed to the open position, and all network branches form an independent network segment;
and step two, connecting the cable, switching on the power supply, starting the star coupler to work, observing the state of each network branch of the star coupler through the working indicator lamp and the error indicator lamp, and performing corresponding treatment when needed.
5. The method of claim 4, wherein in step one, if the star coupler has 8 network branches, and needs to be configured into three network segments, one network segment needs two network branches, and the other two network segments need three network branches, and the network branches are defined as the first network branch to the eighth network branch in the order from front to back, the following settings are performed:
toggling a toggle switch between the second network branch and the third network branch to an off position;
toggling a toggle switch between the third network branch and the fourth network branch to an on position;
toggling a toggle switch between the fourth network branch and the fifth network branch to an on position;
dialing a dial switch between the fifth network branch and the sixth network branch to an off position;
the toggle switches between the sixth network branch and the seventh network branch are toggled to an on position.
6. The method according to claim 5, wherein step two is specifically:
if each network branch works normally and has data transmission, the working indicator lamp corresponding to each network branch flashes at a certain frequency;
if one or more network branches have error frames, an error indicator lamp corresponding to the network branch flashes at a certain frequency;
if one or more network branches are short-circuited, the error indicating lamp corresponding to the network branch is normally on, the network branch is closed, the communication between the network branch and other network branches is cut off, and fault isolation is carried out.
7. Use of a FlexRay star coupler designed by the method according to claim 1 or 2 or 3 in an automotive communication network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910896414.XA CN110677332A (en) | 2019-09-20 | 2019-09-20 | Design method of FlexRay bus star coupler with network configuration and network management functions |
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| CN201910896414.XA CN110677332A (en) | 2019-09-20 | 2019-09-20 | Design method of FlexRay bus star coupler with network configuration and network management functions |
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| CN202183781U (en) * | 2011-08-17 | 2012-04-04 | 航天东方红卫星有限公司 | CAN (Control Area Network) bus network switch |
| CN205847272U (en) * | 2016-07-26 | 2016-12-28 | 桂林聚联科技有限公司 | A kind of fiber optic cable monitor device of tree-shaped fiber cable network |
| CN108418978A (en) * | 2018-02-12 | 2018-08-17 | 平安科技（深圳）有限公司 | Dynamic Route Control method, apparatus, computer equipment and storage medium |
| CN108810088A (en) * | 2017-05-04 | 2018-11-13 | 现代自动车株式会社 | The operating method of communication node and communication node in vehicle network |
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2019
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Patent Citations (6)
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| DE102009047064A1 (en) * | 2009-11-24 | 2011-05-26 | Robert Bosch Gmbh | Method for operating a fieldbus arrangement |
| CN102104516A (en) * | 2009-12-21 | 2011-06-22 | Nxp股份有限公司 | Network mode switching method and serial data communication network |
| CN202183781U (en) * | 2011-08-17 | 2012-04-04 | 航天东方红卫星有限公司 | CAN (Control Area Network) bus network switch |
| CN205847272U (en) * | 2016-07-26 | 2016-12-28 | 桂林聚联科技有限公司 | A kind of fiber optic cable monitor device of tree-shaped fiber cable network |
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Application publication date: 20200110 |