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Method for transmitting data via communications channel, correspondingly designed device and communications interface, as well as correspondingly designed computer program

A technology for transmitting data and communication channels, applied in the field of data transmission

Active Publication Date: 2020-11-13
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But even in this variant, there is still the challenge of prioritizing messages across the entire network segment without bus access conflicts

Method used

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  • Method for transmitting data via communications channel, correspondingly designed device and communications interface, as well as correspondingly designed computer program
  • Method for transmitting data via communications channel, correspondingly designed device and communications interface, as well as correspondingly designed computer program
  • Method for transmitting data via communications channel, correspondingly designed device and communications interface, as well as correspondingly designed computer program

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Embodiment Construction

[0039] figure 1 Vehicle 10 is shown with various electronic components. Shown is the passenger car Pkw. However, any other means of transport are also conceivable as means of transport. Examples of other means of transport are: buses, commercial means of transport, in particular trucks Lkw, agricultural machines, construction machines, motorcycles, rail means of transport, etc. The invention is generally applicable to land vehicles, rail vehicles, water vehicles and air vehicles. The invention is mainly used in the field of transportation means. However, like the CAN bus, it is also conceivable for use in the field bus field, ie in automation technology, process technology, etc. A large number of electronic control devices are used in modern motor vehicles. exist figure 1 The networking of some control devices and sensors is shown in . A distinction is made here between three different classes of control devices. A category of control devices are networked separately. ...

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Abstract

The invention relates to a method for transmitting data via a communications channel (106), wherein the data is transmitted with a transmission frame, the transmission frame has at least one prioritisation field (PCP) for establishing the priority of the message and a data field, the prioritisation field (PCP) functions to control the bus access by prioritizing the messages. For this purpose, a bus access controller is used, in which the priority of at least the last received data packet is stored in a minimum priority storage cell (330). After receiving a data packet, a timer (320) is started, for which a timeout value is set, which is reset when a following packet is received. After reaching the timeout value, a decrementing of the value stored in the minimum priority storage cell (330)occurs. Thereafter, for the purpose of bus access control, when sending a packet, it is checked whether the priority of the packet to be sent is lower than the value stored in the minimum priority storage cell (330), and the sending of the data packet is prevented if the priority of the packet is lower than the value stored in the minimum priority storage cell (330).

Description

technical field [0001] The invention relates to the technical field of data transmission between electronic components networked via a bus system, in particular control devices, sensors and actuators. Such control devices are widely used in motor vehicles. Networked control devices, sensors and actuators are also used in other technical fields, for example in automation technology, process technology and the like. However, the invention is not limited to wired data transmission, but can also be used in wireless data transmission systems. The invention likewise relates to a correspondingly designed communication interface and a correspondingly designed computer program. Background technique [0002] A large number of control devices are installed in modern vehicles. A certain number of control devices are used for the power train alone, such as engine control devices, transmission control devices, ESP control devices, etc. Mention should also be made of the control unit c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L47/80H04L47/6275
CPCH04L12/40163H04L2012/40273H04L12/6402H04L2012/6408
Inventor O·克里格A·迈尔
Owner VOLKSWAGEN AG
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