CN117675420A - Message confirmation method based on FlexRay bus - Google Patents
Message confirmation method based on FlexRay bus Download PDFInfo
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- CN117675420A CN117675420A CN202311493445.3A CN202311493445A CN117675420A CN 117675420 A CN117675420 A CN 117675420A CN 202311493445 A CN202311493445 A CN 202311493445A CN 117675420 A CN117675420 A CN 117675420A
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- message
- bus
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012790 confirmation Methods 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 37
- 238000001914 filtration Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000010200 validation analysis Methods 0.000 claims 4
- 230000003068 static effect Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
- H04L12/1868—Measures taken after transmission, e.g. acknowledgments
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1881—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with schedule organisation, e.g. priority, sequence management
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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
- H04L12/40143—Bus networks involving priority mechanisms
- H04L12/40163—Bus networks involving priority mechanisms by assigning priority to messages according to a message field
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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
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/4028—Bus for use in transportation systems the transportation system being an aircraft
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
A message confirmation method based on FlexRay bus belongs to airborne avionics equipment, comprising: the message sending node sends bus messages simultaneously in a plurality of channels; after receiving the bus message sent by the message sending node, the message receiving node judges the received bus message and obtains the communication state of the received bus message; after the communication of the current communication period is finished, all the acquired communication states of the received bus messages in the period are sent to a FlexRay bus, and a plurality of message sending nodes on the FlexRay bus send bus messages of the next communication period according to the received communication states of the bus messages. By adding a confirmation message to each node at the beginning of the static segment of each period, whether the node correctly receives all messages related to the device in the period in the last period is indicated, and the purpose of confirming the FlexRay bus messages is achieved.
Description
Technical Field
The application belongs to the technical field of airborne avionics, and particularly relates to a message confirmation method based on a FlexRay bus.
Background
Compared with a command response type message transmission mode of a 1553B bus, a broadcasting mode is adopted when a FlayRay bus message is transmitted, a sending node sends the message, a receiving node does not need to answer after receiving the message, the sending node in the prior art cannot determine whether the receiving node correctly receives the message, and the system reliability cannot be guaranteed.
Disclosure of Invention
In view of the foregoing problems in the prior art, an object of the present application is to provide a message acknowledgement technique based on a FlexRay bus, in which an acknowledgement message is added to each node at the beginning of a static segment of each period, so as to indicate whether the node correctly receives all messages related to the device in the period in the last period, thereby achieving the purpose of FlexRay bus message acknowledgement.
In order to achieve the above object, the present application provides a method for confirming a message based on a FlexRay bus, the method including:
the message sending node sends bus messages simultaneously in a plurality of channels;
after receiving the bus message sent by the message sending node, the message receiving node judges the received bus message and obtains the communication state of the received bus message;
after the communication of the current communication period is finished, all the acquired communication states of the received bus messages in the period are sent to a FlexRay bus, and a plurality of message sending nodes on the FlexRay bus send bus messages of the next communication period according to the received communication states of the bus messages.
The message confirmation method based on the FlexRay bus also has the characteristics that the method further comprises the following steps:
and judging the communication states of the bus messages in a plurality of communication periods, acquiring the on-line states and the communication health states of the message sending nodes or/and the message receiving nodes, and sending the on-line states and the communication health state information to all the message sending nodes and the message receiving nodes.
The message confirmation method based on the FlexRay bus also has the characteristics that the method further comprises the following steps:
and when the message receiving node receives the bus messages sent by the channels, filtering repeated messages through redundancy judgment, and then sending the repeated messages to the CPU.
The message confirmation method based on the FlexRay bus also has the characteristics that the redundancy judgment filtering repeated messages comprises the following steps:
judging the bus message which arrives first, if the bus message which arrives first is correct, directly sending, and discarding the bus message which arrives subsequently;
if the bus message which arrives first is wrong, discarding the bus message which arrives first, judging the subsequent message, and repeating the steps;
if all the bus messages are judged to be wrong, the bus message transmitted currently is wrong.
The message confirmation method based on the FlexRay bus also has the characteristic that the method further comprises scheduling the sending of the message sending node.
The message confirmation method based on the FlexRay bus also has the characteristic that the message receiving node sends the message processing capability information of the current message receiving node to the message sending node before receiving the bus message.
The message confirmation method based on the FlexRay bus also has the characteristics that the message sending node obtains the sending sequence of the bus message by judging the priority and timeliness of the bus message, and the message sending node sends the information with higher priority preferentially and sends the message with longer waiting time preferentially in the information with the same priority.
Advantageous effects
According to the message confirmation method based on the FlexRay bus, through adding a confirmation message to each node at the beginning of the static segment of each period, whether the node correctly receives all messages related to the device in the period in the last period is indicated, and the purpose of confirming the FlexRay bus messages is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a functional schematic diagram of a message acknowledgement technique of a FlexRay bus provided in the present application.
Detailed Description
The present application is further described in detail below with reference to the drawings and examples, but it should be understood that these embodiments are not limited to the present application, and functional, method, or structural equivalents and alternatives according to these embodiments are within the scope of protection of the present application by those skilled in the art.
In the description of the embodiments of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description created in this application, unless otherwise indicated, the meaning of "a plurality" is two or more.
The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the creation of this application may be understood by those of ordinary skill in the art by specific circumstances.
As shown in fig. 1, there is provided a message confirmation method based on FlexRay bus, the method including:
the message sending node sends bus messages simultaneously in a plurality of channels;
after receiving the bus message sent by the message sending node, the message receiving node judges the received bus message and obtains the communication state of the received bus message;
after the communication of the current communication period is finished, all the acquired communication states of the received bus messages in the period are sent to a FlexRay bus, and a plurality of message sending nodes on the FlexRay bus send bus messages of the next communication period according to the received communication states of the bus messages.
In some embodiments, the method further comprises:
and judging the communication states of the bus messages in a plurality of communication periods, acquiring the on-line states and the communication health states of the message sending nodes or/and the message receiving nodes, and sending the on-line states and the communication health state information to all the message sending nodes and the message receiving nodes.
In some embodiments, the method further comprises:
and when the message receiving node receives the bus messages sent by the channels, filtering repeated messages through redundancy judgment, and then sending the repeated messages to the CPU.
In some embodiments, the redundancy judgment filtering out duplicate messages includes:
judging the bus message which arrives first, if the bus message which arrives first is correct, directly sending, and discarding the bus message which arrives subsequently;
if the bus message which arrives first is wrong, discarding the bus message which arrives first, judging the subsequent message, and repeating the steps;
if all the bus messages are judged to be wrong, the bus message transmitted currently is wrong.
In some embodiments, the method further comprises scheduling the transmission of the message transmitting node.
In some embodiments, the message receiving node sends message processing capability information of the current message receiving node to the message sending node before receiving the bus message.
In some embodiments, the message sending node obtains the sending sequence of the bus message by judging the priority and timeliness of the bus message, and the message sending node sends the information with higher priority preferentially, and sends the message with longer waiting time preferentially in the information with the same priority.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (7)
1. A message confirmation method based on FlexRay bus, the method comprising:
the message sending node sends bus messages simultaneously in a plurality of channels;
after receiving the bus message sent by the message sending node, the message receiving node judges the received bus message and obtains the communication state of the received bus message;
after the communication of the current communication period is finished, all the acquired communication states of the received bus messages in the period are sent to a FlexRay bus, and a plurality of message sending nodes on the FlexRay bus send bus messages of the next communication period according to the received communication states of the bus messages.
2. A FlexRay bus based message validation method according to claim 1, characterized in that the method further comprises:
and judging the communication states of the bus messages in a plurality of communication periods, acquiring the on-line states and the communication health states of the message sending nodes or/and the message receiving nodes, and sending the on-line states and the communication health state information to all the message sending nodes and the message receiving nodes.
3. A FlexRay bus based message validation method according to claim 1, characterized in that the method further comprises:
and when the message receiving node receives the bus messages sent by the channels, filtering repeated messages through redundancy judgment, and then sending the repeated messages to the CPU.
4. A FlexRay bus based message validation method according to claim 3 wherein the redundancy decision filtering duplicate messages includes:
judging the bus message which arrives first, if the bus message which arrives first is correct, directly sending, and discarding the bus message which arrives subsequently;
if the bus message which arrives first is wrong, discarding the bus message which arrives first, judging the subsequent message, and repeating the steps;
if all the bus messages are judged to be wrong, the bus message transmitted currently is wrong.
5. A FlexRay bus based message confirmation method according to claim 1 characterized in that the method further comprises scheduling the transmission of message transmitting nodes.
6. A FlexRay bus based message validation method according to claim 1 wherein the message receiving node sends message processing capability information of the current message receiving node to the message sending node before receiving the bus message.
7. The message confirmation method based on FlexRay bus according to claim 1, wherein the message sending node obtains the sending sequence of the bus message by judging the priority and timeliness of the bus message, and the message sending node sends the message with higher priority preferentially, and sends the message with longer waiting time preferentially in the message with the same priority.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311493445.3A CN117675420A (en) | 2023-11-09 | 2023-11-09 | Message confirmation method based on FlexRay bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311493445.3A CN117675420A (en) | 2023-11-09 | 2023-11-09 | Message confirmation method based on FlexRay bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117675420A true CN117675420A (en) | 2024-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311493445.3A Pending CN117675420A (en) | 2023-11-09 | 2023-11-09 | Message confirmation method based on FlexRay bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117675420A (en) |
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2023
- 2023-11-09 CN CN202311493445.3A patent/CN117675420A/en active Pending
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