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Subscriber station for a bus system and method for data transmission in a bus system

A technology of bus system and user station, which is applied in the field of data transmission in the user station of the bus system and the bus system, and can solve problems such as danger, spying, inappropriateness, etc.

Active Publication Date: 2021-04-20
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, branch lines are especially unsuitable for transmission by means of amplitude modulation at high transmission rates due to reflections.
[0008] A further disadvantage is that messages that are intended only for the individual bus subscribers can also always be heard by all other subscriber stations and can therefore also be spied on and manipulated undesirably.
This looks dangerous especially in the case of external devices

Method used

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  • Subscriber station for a bus system and method for data transmission in a bus system
  • Subscriber station for a bus system and method for data transmission in a bus system
  • Subscriber station for a bus system and method for data transmission in a bus system

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Embodiment Construction

[0036] 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, etc., or in hospitals or the like.

[0037] exist figure 1 The bus system 1 has a bus line 3 to which a plurality of subscriber stations 10 to 80 are connected. The messages N1 , N2 , N3 can be transmitted via the bus line 3 in the form of signals between the individual subscriber stations 10 to 80 . The bus line 3 is embodied, for example, as a twin wire or a wire pair. Subscriber stations 10 to 80 can be, for example, control devices, sensors, display devices, etc. of a motor vehicle.

[0038] as infigure 1 As shown in , subscriber stations 10 , 40 , 50 , 70 , 80 each have a communication control unit 11 , a transmitter / receiver unit 12 , a switching unit 13 and a terminating resistor L, R for the bus line 3 . In contrast, the subscriber stations 20 , 30 , 60 have a commun...

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Abstract

A method for data transmission in a subscriber station (10; 40; 50; 70; 80) of a bus system (1; 2) and in a bus system (1; 2) is provided. A subscriber station (10; 40; 50; 70; 80) comprises a further subscriber station for sending messages (N1; N2; N3) to said bus system (1; 2) and / or from said bus system ( 1; 2) a sending / receiving device (12; 22) for receiving a message (N1; N2; N3) from another subscriber station and for switching between an open and a closed state to said bus system (1; 2) A switching device (13; 43) for the connection of at least one further subscriber station, wherein the switching device (13; 43) is designed to be based on a message (N1; N2) received by the sending / receiving device (12; 22); Selective connection control of at least part of N3) a subscriber station (10; 40; 50; 70; 80) to at least one further subscriber station of the bus system (1; 2).

Description

technical field [0001] The invention relates to a subscriber station for a bus system and a method for data transmission in a bus system. Background technique [0002] Driving systems are currently being developed in which the vehicle drives on public roads autonomously or without a human being having an influence on the individual steering, braking or acceleration processes. In the course of this development, more and more influential driver assistance functions are installed in the vehicle for the fully autonomous driving of the vehicle. Driver assistance functions control individual driving situations in a targeted manner, such as parking, stop-and-go, highway driving, etc., and must be available in a reliable manner. This places high demands on the data transmission rate between the control devices. [0003] CAN bus systems can be used, for example, for communication between sensors and control units in vehicles, in particular automobiles. In the case of a CAN bus sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
CPCH04L12/4013G06F13/36G06F13/368G06F13/4022G06F13/4063
Inventor R.马乔尔S.魏森迈尔
Owner ROBERT BOSCH GMBH
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