Participant station for a bus system and method for improving the error tolerance of a participant station of a bus system

一种总线系统、用户站的技术，应用在用于总线系统的用户站以及用于改进总线系统的用户站的错误鲁棒性领域，能够解决错误探测、限制总线系统使用场景、减小接收信号等问题

Active Publication Date: 2016-03-16
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Since the increase in the data rate in the case of CAN-FD is achieved in particular by shortening the symbol duration in the data part sent after the arbitration performed, this characteristic may limit the usage scenarios of the bus system
[0009] In this case, the distance from the received signal to the decision threshold is reduced so strongly that superimposed noise disturbances can lead to false detections in the CAN transmit / receive device with a much higher probability

Method used

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  • Participant station for a bus system and method for improving the error tolerance of a participant station of a bus system
  • Participant station for a bus system and method for improving the error tolerance of a participant station of a bus system

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Embodiment Construction

[0040] figure 1 A 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 motor vehicles, aircraft or the like, or in hospitals or the like.

[0041] exist figure 1 The central bus system 1 has a plurality of subscriber stations 10 , 20 , 30 which are each connected to a bus line 40 with a first bus core 41 and a second bus core 42 . The bus wires 41 , 42 can also be referred to as CAN high (C_H) and CAN low (C_L) and are used for the coupling-in of the dominant level in the transmit state. Messages 45 , 46 , 47 can be transmitted in the form of signals between the individual subscriber stations 10 , 20 , 30 via bus line 40 . Subscriber stations 10 , 20 , 30 can be, for example, control devices or display devices of a motor vehicle.

[0042] as in figure 1 As shown in , the subscriber stations 10 , 30 each have a communication control device 11 , a receiver modification de...

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Abstract

The invention relates to a participant station (10; 30; 50; 60) for a bus system (1; 2) and to a method for improving the error tolerance of a participant station (10; 30; 50; 60) of a bus system (1; 2). The participant station (10; 30; 50; 60) comprises a transmitting / receiving device (13) for transmitting a signal via the bus system (1; 2) to an additional participant station and for receiving a signal via the bus system (1; 2), wherein exclusive, collision-free access of a participant station (10, 20, 30, 50, 60) to a bus control (40) of the bus system (1; 2) is guaranteed at least temporarily, and a modification device (12; 14) for modifying the transmitting properties of a transmitting path (131) of the transmitting / receiving device (13) and / or the receiving properties of a receiving path (132) of the transmitting / receiving device (13).

Description

technical field [0001] The invention relates to a subscriber station of a bus system and a method for improving the error robustness of a subscriber station of a bus system, in the case of the subscriber station and the method in the transmission of information on the bus system The error robustness is also improved under unfavorable conditions such as eg due to branches in the bus system, false terminations, mismatches, pinched cable guides. Background technique [0002] For communication between sensors and control devices, the CAN bus system has gained widespread popularity. In the case of a CAN bus system, messages are transmitted by means of the CAN protocol, as described in the CAN specification in ISO11898. More recently, technologies such as CAN-FD have been proposed for this purpose, in which messages are transmitted according to the specification "CAN with Flexible Data-Rate, Specification Version 1.0" (source: http: / / www.semiconductors.bosch.de) . In such a tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L12/40H03H11/00
CPCG06F13/4221H04L25/0272H04L2012/40215G06F11/0745G06F11/0793
Inventor P.尼克尔
Owner ROBERT BOSCH GMBH
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