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Device and method for improving the reception quality of messages in a can bus system

一种总线系统、消息的技术，应用在传输系统、基带系统、总线网络等方向，能够解决未知CAN通信系统应用、总线线路影响、未考虑等问题

Active Publication Date: 2015-08-26
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the direct formation and output of the signal decision has the disadvantage that the effect of reflections on the bus line negatively affects the decision and can lead to wrong decisions in the signal transmission
[0009] Although correction methods for improving the detection quality in receivers are generally known in the field of communication technology, their application to CAN communication systems has hitherto been unknown
Furthermore, the use of known correction methods for CAN communication systems requires special measures, since said correction methods are not considered in the system design

Method used

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  • Device and method for improving the reception quality of messages in a can bus system
  • Device and method for improving the reception quality of messages in a can bus system
  • Device and method for improving the reception quality of messages in a can bus system

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Embodiment Construction

[0038] figure 1A bus system 1 is shown, which can be, for example, a CAN bus system, a CAN-FD bus system or the like. The bus system 1 can be used in vehicles, in particular in motor vehicles, aircraft or the like, or in hospitals or the like.

[0039] exist figure 1 In this case, the bus system 1 has a plurality of subscriber stations 10 , 20 , 30 which are each connected to a bus line 40 . Messages 41 , 42 , 43 can be transmitted in the form of signals between the individual subscriber stations 10 , 20 , 30 via the bus line 40 . The messages 41 , 42 , 43 each have a message identifier (Nachrichten identifier) ​​411 , 421 , 431 . Subscriber stations 10 , 20 , 30 can be, for example, control devices or display devices of a motor vehicle.

[0040] as in figure 1 As shown in , the subscriber station 10 has a communication control device 11 , an estimation device 12 , a correction device 13 and a transmission / reception device 14 . On the other hand, the subscriber station 2...

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Abstract

A subscriber station for a bus system and a method for improving a reception quality of messages in a subscriber station of a bus system are provided. The subscriber station comprises an estimation device for estimating a channel impulse response when and / or after only one other subscriber station of the bus system sends a message on the bus system or for determining necessary functions of filters directly from a signal received by the subscriber station. Said subscriber station also comprises a correction device for correcting a signal received by the subscriber station on the basis of the channel impulse response estimated by the estimation device.

Description

technical field [0001] The invention relates to a subscriber station of a bus system and a method for improving the reception quality of messages in a subscriber station of a bus system, wherein in particular the reception quality in the transmission of information on a CAN bus system even in the event of e.g. Termination, misalignment, crushed cabling are also improved under unfavorable conditions existing within the bus system. Background technique [0002] The CAN bus system is widely popular for communication between sensors and control devices. In the CAN bus system, messages are transmitted using the CAN protocol, as described in the CAN specification in ISO11898. Furthermore, technologies have recently been proposed for this purpose, such as CAN-FD, in which messages are transmitted according to the specification "CAN with Flexible Data Rate, Specification Version 1.0" (source http: / / www.semiconductord.de), etc. In such a technique, the maximum possible data rate is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L25/03H04L12/40
CPCH04L2012/40208H04L2012/40215H04L25/025H04L25/0212H04L25/03057H04L12/40
Inventor P·尼克尔
Owner ROBERT BOSCH GMBH